whiterose

linux unikernel
Log | Files | Refs | README | LICENSE | git clone https://git.ne02ptzero.me/git/whiterose

commit 02061181d3a9ccfe15ef6bc15fa56283acc47620
parent 117eda8f71ff545cfdec8fe8073adbd173a1ceff
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Fri, 28 Dec 2018 20:39:58 -0800

Merge tag 'staging-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO driver updates from Greg KH:
 "Here is the big staging and iio driver pull request for 4.21-rc1.

  Lots and lots of tiny patches here, nothing major at all. Which is
  good, tiny cleanups is nice to see. No new huge driver removal or
  addition, this release cycle, although there are lots of good IIO
  driver changes, addtions, and movement from staging into the "real"
  part of the kernel, which is always great.

  Full details are in the shortlog, and all of these have been in
  linux-next for a while with no reported issues"

* tag 'staging-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (553 commits)
  staging: mt7621-mmc: Correct spelling mistakes in comments
  staging: wilc1000: fix missing read_write setting when reading data
  mt7621-mmc: char * array declaration might be better as static const
  mt7621-mmc: return statement in void function unnecessary
  mt7621-mmc: Alignment should match open parenthesis
  mt7621-mmc: Removed unnecessary blank lines
  mt7621-mmc: Fix some coding style issues
  staging: android: ashmem: doc: Fix spelling
  staging: rtl8188eu: cleanup brace coding style issues
  staging: rtl8188eu: add spaces around '&' in rtw_mlme_ext.c
  staging: rtl8188eu: change return type of is_basicrate() to bool
  staging: rtl8188eu: simplify null array initializations
  staging: rtl8188eu: change order of declarations to improve readability
  staging: rtl8188eu: make some arrays static in rtw_mlme_ext.c
  staging: rtl8188eu: constify some arrays
  staging: rtl8188eu: convert unsigned char arrays to u8
  staging: rtl8188eu: remove redundant declaration in rtw_mlme_ext.c
  staging: rtl8188eu: remove unused arrays WFD_OUI and WMM_INFO_OUI
  staging: rtl8188eu: remove unnecessary parentheses in rtw_mlme_ext.c
  staging: rtl8188eu: remove unnecessary comments in rtw_mlme_ext.c
  ...

Diffstat:
MDocumentation/devicetree/bindings/iio/accel/lis302.txt | 4++--
ADocumentation/devicetree/bindings/iio/adc/ad7949.txt | 16++++++++++++++++
ADocumentation/devicetree/bindings/iio/adc/adc.txt | 23+++++++++++++++++++++++
ADocumentation/devicetree/bindings/iio/adc/adi,ad7124.txt | 75+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
MDocumentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt | 6++++++
MDocumentation/devicetree/bindings/iio/adc/samsung,exynos-adc.txt | 4+++-
MDocumentation/devicetree/bindings/iio/adc/ti-adc128s052.txt | 9++++++++-
ADocumentation/devicetree/bindings/iio/dac/ti,dac7311.txt | 23+++++++++++++++++++++++
MDocumentation/devicetree/bindings/iio/imu/st_lsm6dsx.txt | 1+
ADocumentation/devicetree/bindings/iio/light/vcnl4035.txt | 18++++++++++++++++++
ADocumentation/devicetree/bindings/iio/magnetometer/pni,rm3100.txt | 20++++++++++++++++++++
ADocumentation/devicetree/bindings/iio/potentiometer/mcp41010.txt | 28++++++++++++++++++++++++++++
ADocumentation/devicetree/bindings/iio/resolver/ad2s90.txt | 31+++++++++++++++++++++++++++++++
MDocumentation/devicetree/bindings/iio/st-sensors.txt | 2++
MDocumentation/devicetree/bindings/vendor-prefixes.txt | 2++
MMAINTAINERS | 38+++++++++++++++++++++++++++++++++++---
Mdrivers/iio/accel/Kconfig | 2+-
Mdrivers/iio/accel/kxcjk-1013.c | 3+++
Mdrivers/iio/accel/st_accel.h | 1+
Mdrivers/iio/accel/st_accel_core.c | 1+
Mdrivers/iio/accel/st_accel_i2c.c | 5+++++
Mdrivers/iio/accel/st_accel_spi.c | 5+++++
Mdrivers/iio/adc/Kconfig | 23++++++++++++++++++++++-
Mdrivers/iio/adc/Makefile | 2++
Adrivers/iio/adc/ad7124.c | 684+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Adrivers/iio/adc/ad7949.c | 347+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Mdrivers/iio/adc/ad_sigma_delta.c | 22+++++++++++++++++-----
Mdrivers/iio/adc/exynos_adc.c | 14++++++++++++++
Mdrivers/iio/adc/ina2xx-adc.c | 2++
Mdrivers/iio/adc/max11100.c | 5+----
Mdrivers/iio/adc/max9611.c | 5+----
Mdrivers/iio/adc/meson_saradc.c | 243+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----------
Mdrivers/iio/adc/qcom-spmi-adc5.c | 58+++++++++++++++++++++++++++++++---------------------------
Mdrivers/iio/adc/rcar-gyroadc.c | 11+----------
Mdrivers/iio/adc/sc27xx_adc.c | 12+++++++++++-
Mdrivers/iio/adc/stm32-adc-core.c | 182+++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------------------
Mdrivers/iio/adc/stm32-adc.c | 303++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----------------------
Mdrivers/iio/adc/ti-adc128s052.c | 37+++++++++++++++++++++++++++++--------
Mdrivers/iio/common/hid-sensors/hid-sensor-attributes.c | 2+-
Mdrivers/iio/common/ssp_sensors/ssp_dev.c | 20++++++--------------
Mdrivers/iio/common/st_sensors/st_sensors_core.c | 3+--
Mdrivers/iio/common/st_sensors/st_sensors_trigger.c | 4++--
Mdrivers/iio/dac/Kconfig | 9+++++++++
Mdrivers/iio/dac/Makefile | 1+
Mdrivers/iio/dac/ad5686-spi.c | 21++++++++++++++++++---
Mdrivers/iio/dac/ad5686.c | 19++++++++++++++++++-
Mdrivers/iio/dac/ad5686.h | 7+++++++
Mdrivers/iio/dac/dpot-dac.c | 4++--
Adrivers/iio/dac/ti-dac7311.c | 338+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Mdrivers/iio/imu/bmi160/bmi160.h | 1-
Mdrivers/iio/imu/bmi160/bmi160_core.c | 38++++++++++++++------------------------
Mdrivers/iio/imu/bmi160/bmi160_i2c.c | 8--------
Mdrivers/iio/imu/bmi160/bmi160_spi.c | 8--------
Mdrivers/iio/imu/st_lsm6dsx/Makefile | 3++-
Mdrivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 167+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
Mdrivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c | 165++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------------------
Mdrivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 283++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----------------------
Adrivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c | 779+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Mdrivers/iio/industrialio-core.c | 3+++
Mdrivers/iio/light/Kconfig | 13+++++++++++++
Mdrivers/iio/light/Makefile | 1+
Adrivers/iio/light/vcnl4035.c | 676+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Mdrivers/iio/magnetometer/Kconfig | 29+++++++++++++++++++++++++++++
Mdrivers/iio/magnetometer/Makefile | 4++++
Mdrivers/iio/magnetometer/ak8975.c | 1+
Adrivers/iio/magnetometer/rm3100-core.c | 616+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Adrivers/iio/magnetometer/rm3100-i2c.c | 54++++++++++++++++++++++++++++++++++++++++++++++++++++++
Adrivers/iio/magnetometer/rm3100-spi.c | 64++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Adrivers/iio/magnetometer/rm3100.h | 17+++++++++++++++++
Mdrivers/iio/magnetometer/st_magn.h | 1+
Mdrivers/iio/magnetometer/st_magn_core.c | 11++++++++---
Mdrivers/iio/magnetometer/st_magn_i2c.c | 5+++++
Mdrivers/iio/magnetometer/st_magn_spi.c | 7+++++++
Mdrivers/iio/potentiometer/Kconfig | 12++++++++++++
Mdrivers/iio/potentiometer/Makefile | 1+
Adrivers/iio/potentiometer/mcp41010.c | 203+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Mdrivers/iio/potentiometer/mcp4131.c | 11+++++++----
Mdrivers/iio/potentiometer/tpl0102.c | 42+++++++++++++++++++++++++++++++-----------
Mdrivers/iio/resolver/Kconfig | 10++++++++++
Mdrivers/iio/resolver/Makefile | 1+
Adrivers/iio/resolver/ad2s90.c | 131+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Mdrivers/staging/android/ashmem.c | 4++--
Mdrivers/staging/android/ion/ion.c | 51++++++++++++++++++++++++++++++++++++++++++---------
Mdrivers/staging/android/ion/ion.h | 9+++++++++
Mdrivers/staging/android/ion/ion_system_heap.c | 1-
Mdrivers/staging/axis-fifo/axis-fifo.c | 3++-
Mdrivers/staging/comedi/comedi_fops.c | 49++++++++++++++++++++++++++++++++-----------------
Mdrivers/staging/comedi/drivers/8255.h | 2+-
Mdrivers/staging/comedi/drivers/addi_apci_3501.c | 9++++++++-
Mdrivers/staging/comedi/drivers/amplc_dio200.h | 2+-
Mdrivers/staging/comedi/drivers/amplc_pc236.h | 2+-
Mdrivers/staging/comedi/drivers/cb_pcidas.c | 2+-
Mdrivers/staging/comedi/drivers/cb_pcidas64.c | 44+++++++++++++++++++++++++++++---------------
Mdrivers/staging/comedi/drivers/cb_pcidda.c | 4+++-
Mdrivers/staging/comedi/drivers/comedi_8254.h | 2+-
Mdrivers/staging/comedi/drivers/comedi_isadma.h | 2+-
Mdrivers/staging/comedi/drivers/das08.h | 2+-
Mdrivers/staging/comedi/drivers/dt9812.c | 2+-
Mdrivers/staging/comedi/drivers/mite.h | 2+-
Mdrivers/staging/comedi/drivers/ni_labpc.h | 2+-
Mdrivers/staging/comedi/drivers/ni_labpc_common.c | 9++++++---
Mdrivers/staging/comedi/drivers/ni_stc.h | 2+-
Mdrivers/staging/comedi/drivers/ni_tio.h | 2+-
Mdrivers/staging/comedi/drivers/ni_tio_internal.h | 2+-
Mdrivers/staging/comedi/drivers/plx9052.h | 2+-
Mdrivers/staging/comedi/drivers/plx9080.h | 2+-
Mdrivers/staging/comedi/drivers/s626.h | 2+-
Mdrivers/staging/comedi/drivers/tests/ni_routes_test.c | 2+-
Mdrivers/staging/emxx_udc/emxx_udc.c | 292++++++++++++++++++++++++++++++-------------------------------------------------
Mdrivers/staging/emxx_udc/emxx_udc.h | 2+-
Mdrivers/staging/erofs/Kconfig | 3++-
Mdrivers/staging/erofs/Makefile | 2+-
Mdrivers/staging/erofs/TODO | 15++++++++-------
Mdrivers/staging/erofs/data.c | 65+++++++++++++++++++++++++++++++++--------------------------------
Mdrivers/staging/erofs/dir.c | 11+++++++----
Mdrivers/staging/erofs/erofs_fs.h | 8+++-----
Mdrivers/staging/erofs/inode.c | 10++++++++--
Mdrivers/staging/erofs/internal.h | 79+++++++++++++++++++++++++++++++++++++++++++++++++++----------------------------
Ddrivers/staging/erofs/lz4defs.h | 227-------------------------------------------------------------------------------
Mdrivers/staging/erofs/super.c | 19++++++-------------
Ddrivers/staging/erofs/unzip_lz4.c | 251-------------------------------------------------------------------------------
Mdrivers/staging/erofs/unzip_pagevec.h | 2+-
Mdrivers/staging/erofs/unzip_vle.c | 753+++++++++++++++++++++++++++++++++++++++++++++++++------------------------------
Mdrivers/staging/erofs/unzip_vle.h | 4++--
Mdrivers/staging/erofs/unzip_vle_lz4.c | 27++++++++++++++++++++++++---
Mdrivers/staging/erofs/utils.c | 146++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------------------
Mdrivers/staging/fbtft/fbtft_device.c | 2+-
Mdrivers/staging/fwserial/fwserial.c | 32++++----------------------------
Mdrivers/staging/gasket/gasket_interrupt.c | 17++++++++---------
Mdrivers/staging/gasket/gasket_page_table.c | 27+++++++++++++--------------
Mdrivers/staging/goldfish/goldfish_audio.c | 1+
Mdrivers/staging/greybus/arche-apb-ctrl.c | 1-
Mdrivers/staging/greybus/arche_platform.h | 2+-
Mdrivers/staging/greybus/arpc.h | 2+-
Mdrivers/staging/greybus/audio_apbridgea.h | 2+-
Mdrivers/staging/greybus/audio_codec.h | 2+-
Mdrivers/staging/greybus/audio_manager.h | 2+-
Mdrivers/staging/greybus/audio_manager_module.c | 4++--
Mdrivers/staging/greybus/audio_manager_private.h | 2+-
Mdrivers/staging/greybus/audio_manager_sysfs.c | 22+++++++++++-----------
Mdrivers/staging/greybus/audio_module.c | 20++++++++++----------
Mdrivers/staging/greybus/audio_topology.c | 63++++++++++++++++++++++++++++++++-------------------------------
Mdrivers/staging/greybus/bootrom.c | 25+++++++++++++------------
Mdrivers/staging/greybus/bundle.h | 2+-
Mdrivers/staging/greybus/camera.c | 13++++++-------
Mdrivers/staging/greybus/connection.c | 86++++++++++++++++++++++++++++++++++++++-----------------------------------------
Mdrivers/staging/greybus/connection.h | 2+-
Mdrivers/staging/greybus/control.c | 53+++++++++++++++++++++++++++--------------------------
Mdrivers/staging/greybus/control.h | 4++--
Mdrivers/staging/greybus/core.c | 4++--
Mdrivers/staging/greybus/es2.c | 74+++++++++++++++++++++++++++++++++++++-------------------------------------
Mdrivers/staging/greybus/gpio.c | 39++++++++++++++++++++-------------------
Mdrivers/staging/greybus/greybus_protocols.h | 8++++----
Mdrivers/staging/greybus/hid.c | 18++++++++++--------
Mdrivers/staging/greybus/i2c.c | 21+++++++++++----------
Mdrivers/staging/greybus/loopback.c | 60+++++-------------------------------------------------------
Mdrivers/staging/greybus/module.c | 19+++++++++----------
Mdrivers/staging/greybus/operation.c | 135+++++++++++++++++++++++++++++++++++++++++--------------------------------------
Mdrivers/staging/greybus/svc.c | 93+++++++++++++++++++++++++++++++++++++++----------------------------------------
Mdrivers/staging/greybus/uart.c | 4++--
Mdrivers/staging/iio/adc/Kconfig | 1+
Mdrivers/staging/iio/adc/ad7280a.c | 208++++++++++++++++++++++++++++++++++++-------------------------------------------
Mdrivers/staging/iio/adc/ad7606.c | 2+-
Mdrivers/staging/iio/adc/ad7780.c | 72++++++++++++++++++++++++++++++++++++++++++------------------------------
Mdrivers/staging/iio/adc/ad7816.c | 113+++++++++++++++++++++++++++++++++++++++++++------------------------------------
Mdrivers/staging/iio/addac/adt7316-i2c.c | 16+++++++++++++++-
Mdrivers/staging/iio/addac/adt7316-spi.c | 1-
Mdrivers/staging/iio/addac/adt7316.c | 484++++++++++++++++++++++++++++++++++++++++---------------------------------------
Mdrivers/staging/iio/addac/adt7316.h | 3+--
Mdrivers/staging/iio/cdc/ad7150.c | 9+++++----
Mdrivers/staging/iio/impedance-analyzer/ad5933.c | 20++++++++++++++------
Mdrivers/staging/iio/resolver/Kconfig | 10----------
Mdrivers/staging/iio/resolver/Makefile | 1-
Mdrivers/staging/iio/resolver/ad2s1210.c | 140+++++++++++++++++++++++++++++++++++++------------------------------------------
Ddrivers/staging/iio/resolver/ad2s1210.h | 20--------------------
Ddrivers/staging/iio/resolver/ad2s90.c | 110-------------------------------------------------------------------------------
Mdrivers/staging/ks7010/michael_mic.c | 1-
Mdrivers/staging/media/bcm2048/radio-bcm2048.c | 1+
Mdrivers/staging/media/bcm2048/radio-bcm2048.h | 1+
Mdrivers/staging/media/davinci_vpfe/davinci_vpfe_user.h | 5+----
Mdrivers/staging/media/davinci_vpfe/dm365_ipipe.c | 71+++++++++++++++++++++++++++++++++--------------------------------------
Mdrivers/staging/media/davinci_vpfe/dm365_ipipe.h | 5+----
Mdrivers/staging/media/davinci_vpfe/dm365_ipipe_hw.c | 5+----
Mdrivers/staging/media/davinci_vpfe/dm365_ipipe_hw.h | 5+----
Mdrivers/staging/media/davinci_vpfe/dm365_ipipeif.c | 5+----
Mdrivers/staging/media/davinci_vpfe/dm365_ipipeif.h | 5+----
Mdrivers/staging/media/davinci_vpfe/dm365_ipipeif_user.h | 5+----
Mdrivers/staging/media/davinci_vpfe/dm365_isif.c | 5+----
Mdrivers/staging/media/davinci_vpfe/dm365_isif.h | 5+----
Mdrivers/staging/media/davinci_vpfe/dm365_isif_regs.h | 5+----
Mdrivers/staging/media/davinci_vpfe/dm365_resizer.c | 5+----
Mdrivers/staging/media/davinci_vpfe/dm365_resizer.h | 5+----
Mdrivers/staging/media/davinci_vpfe/vpfe.h | 5+----
Mdrivers/staging/media/davinci_vpfe/vpfe_mc_capture.c | 5+----
Mdrivers/staging/media/davinci_vpfe/vpfe_mc_capture.h | 5+----
Mdrivers/staging/media/davinci_vpfe/vpfe_video.c | 5+----
Mdrivers/staging/media/davinci_vpfe/vpfe_video.h | 5+----
Mdrivers/staging/media/tegra-vde/uapi.h | 4++--
Mdrivers/staging/most/Documentation/driver_usage.txt | 16+++++++++++++---
Mdrivers/staging/most/sound/sound.c | 143++++++++++++++++++++++++++++++++++++++++++++++++++++---------------------------
Mdrivers/staging/mt7621-dma/mtk-hsdma.c | 6++++--
Mdrivers/staging/mt7621-dma/ralink-gdma.c | 25++++++++++++++-----------
Mdrivers/staging/mt7621-dts/gbpc1.dts | 1+
Mdrivers/staging/mt7621-dts/mt7621.dtsi | 23+++++++++++------------
Mdrivers/staging/mt7621-eth/mdio.c | 2+-
Mdrivers/staging/mt7621-eth/mtk_eth_soc.c | 5++---
Mdrivers/staging/mt7621-mmc/dbg.c | 2+-
Mdrivers/staging/mt7621-mmc/sd.c | 75++++++++++++++++++++++++++++-----------------------------------------------
Adrivers/staging/mt7621-pci/mediatek,mt7621-pci.txt | 99+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Mdrivers/staging/mt7621-pci/pci-mt7621.c | 930+++++++++++++++++++++++++++++++++++++++++++++++--------------------------------
Mdrivers/staging/mt7621-spi/spi-mt7621.c | 147+++++++++++++------------------------------------------------------------------
Mdrivers/staging/octeon-usb/octeon-hcd.c | 6++++--
Mdrivers/staging/octeon/ethernet-mdio.c | 1-
Mdrivers/staging/octeon/ethernet.c | 11+++++------
Mdrivers/staging/olpc_dcon/olpc_dcon_xo_1.c | 90+++++++++++++++++++++++++++++++++++++++++--------------------------------------
Mdrivers/staging/pi433/pi433_if.c | 18+++++++-----------
Mdrivers/staging/pi433/pi433_if.h | 10----------
Mdrivers/staging/pi433/rf69.c | 10----------
Mdrivers/staging/pi433/rf69.h | 10----------
Mdrivers/staging/pi433/rf69_enum.h | 10----------
Mdrivers/staging/pi433/rf69_registers.h | 10----------
Mdrivers/staging/rtl8188eu/core/rtw_ap.c | 4++--
Mdrivers/staging/rtl8188eu/core/rtw_cmd.c | 31+++++++++----------------------
Mdrivers/staging/rtl8188eu/core/rtw_led.c | 20++++++++------------
Mdrivers/staging/rtl8188eu/core/rtw_mlme.c | 354++++++++++++++++++++++++++++++++++++++++---------------------------------------
Mdrivers/staging/rtl8188eu/core/rtw_mlme_ext.c | 770+++++++++++++++++++++++++++++++++++++++----------------------------------------
Mdrivers/staging/rtl8188eu/core/rtw_pwrctrl.c | 2+-
Mdrivers/staging/rtl8188eu/core/rtw_recv.c | 20++++++++++----------
Mdrivers/staging/rtl8188eu/core/rtw_security.c | 4++--
Mdrivers/staging/rtl8188eu/core/rtw_sreset.c | 4++--
Mdrivers/staging/rtl8188eu/core/rtw_sta_mgt.c | 2+-
Mdrivers/staging/rtl8188eu/core/rtw_wlan_util.c | 314+++++++++++++++++++++++++++++++++++++++----------------------------------------
Mdrivers/staging/rtl8188eu/core/rtw_xmit.c | 19+++++++++----------
Mdrivers/staging/rtl8188eu/hal/hal8188e_rate_adaptive.c | 156+++++++++++++++++++++++++++++++++++++-------------------------------------------
Mdrivers/staging/rtl8188eu/hal/odm.c | 8++++----
Mdrivers/staging/rtl8188eu/hal/odm_hwconfig.c | 37+++++++++++++++----------------------
Mdrivers/staging/rtl8188eu/hal/phy.c | 17++++++-----------
Mdrivers/staging/rtl8188eu/hal/rf.c | 17+++--------------
Mdrivers/staging/rtl8188eu/hal/rtl8188e_cmd.c | 7+++----
Mdrivers/staging/rtl8188eu/hal/rtl8188e_hal_init.c | 5++---
Mdrivers/staging/rtl8188eu/hal/rtl8188eu_led.c | 46++++++++++++++++------------------------------
Mdrivers/staging/rtl8188eu/hal/rtl8188eu_xmit.c | 7++++---
Mdrivers/staging/rtl8188eu/include/hal_intf.h | 2+-
Mdrivers/staging/rtl8188eu/include/rtl8188e_hal.h | 2++
Mdrivers/staging/rtl8188eu/include/rtl8188e_xmit.h | 4++--
Mdrivers/staging/rtl8188eu/include/rtw_led.h | 12+++++-------
Mdrivers/staging/rtl8188eu/include/rtw_mlme.h | 8++++----
Mdrivers/staging/rtl8188eu/include/rtw_mlme_ext.h | 15++++-----------
Mdrivers/staging/rtl8188eu/include/rtw_recv.h | 2+-
Mdrivers/staging/rtl8188eu/include/rtw_sreset.h | 2+-
Mdrivers/staging/rtl8188eu/os_dep/ioctl_linux.c | 36++++++++++++++++++------------------
Mdrivers/staging/rtl8188eu/os_dep/os_intfs.c | 10+++++-----
Mdrivers/staging/rtl8188eu/os_dep/recv_linux.c | 10+++++-----
Mdrivers/staging/rtl8188eu/os_dep/rtw_android.c | 8--------
Mdrivers/staging/rtl8188eu/os_dep/usb_ops_linux.c | 171+++++++++++++++++++++++++++++++++++++++++++------------------------------------
Mdrivers/staging/rtl8192e/rtllib_crypt_ccmp.c | 14+++++---------
Mdrivers/staging/rtl8192u/r8192U.h | 4++--
Mdrivers/staging/rtl8192u/r8192U_dm.c | 10+++++-----
Mdrivers/staging/rtl8192u/r819xU_cmdpkt.c | 2+-
Mdrivers/staging/rtl8192u/r819xU_firmware.c | 4++--
Mdrivers/staging/rtl8192u/r819xU_phyreg.h | 2+-
Mdrivers/staging/rtl8712/hal_init.c | 10+++++-----
Mdrivers/staging/rtl8712/rtl8712_hal.h | 8++++----
Mdrivers/staging/rtl8712/rtl871x_cmd.h | 2+-
Mdrivers/staging/rtl8723bs/TODO | 2+-
Mdrivers/staging/rtl8723bs/core/rtw_ap.c | 236++++---------------------------------------------------------------------------
Mdrivers/staging/rtl8723bs/core/rtw_cmd.c | 60+++++++++++++++++++++++++++++-------------------------------
Mdrivers/staging/rtl8723bs/core/rtw_debug.c | 2+-
Mdrivers/staging/rtl8723bs/core/rtw_efuse.c | 6+++---
Mdrivers/staging/rtl8723bs/core/rtw_ieee80211.c | 26+++++++++++++-------------
Mdrivers/staging/rtl8723bs/core/rtw_ioctl_set.c | 16++++++++--------
Mdrivers/staging/rtl8723bs/core/rtw_mlme.c | 40+++++++++++++++++++---------------------
Mdrivers/staging/rtl8723bs/core/rtw_mlme_ext.c | 128+++++++++++++++++++++++++++++--------------------------------------------------
Mdrivers/staging/rtl8723bs/core/rtw_pwrctrl.c | 84+++++++++++++++++++++++++++++++++++++++----------------------------------------
Mdrivers/staging/rtl8723bs/core/rtw_recv.c | 34+++++++++++++++++-----------------
Mdrivers/staging/rtl8723bs/core/rtw_security.c | 6+++---
Mdrivers/staging/rtl8723bs/core/rtw_sta_mgt.c | 2+-
Mdrivers/staging/rtl8723bs/core/rtw_wlan_util.c | 26+++++++++++++-------------
Mdrivers/staging/rtl8723bs/core/rtw_xmit.c | 34+++++++++++++++++-----------------
Mdrivers/staging/rtl8723bs/hal/hal_btcoex.c | 4++--
Mdrivers/staging/rtl8723bs/hal/odm_EdcaTurboCheck.c | 8++++----
Mdrivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c | 4++--
Mdrivers/staging/rtl8723bs/hal/rtl8723bs_recv.c | 10+++++-----
Mdrivers/staging/rtl8723bs/hal/rtl8723bs_xmit.c | 22+++++++++-------------
Mdrivers/staging/rtl8723bs/hal/sdio_ops.c | 2+-
Mdrivers/staging/rtl8723bs/include/osdep_service_linux.h | 2--
Mdrivers/staging/rtl8723bs/include/rtw_cmd.h | 9++++-----
Mdrivers/staging/rtl8723bs/include/rtw_io.h | 1-
Mdrivers/staging/rtl8723bs/include/rtw_mlme_ext.h | 1-
Mdrivers/staging/rtl8723bs/include/rtw_mp.h | 1-
Mdrivers/staging/rtl8723bs/include/rtw_pwrctrl.h | 8++------
Mdrivers/staging/rtl8723bs/include/rtw_xmit.h | 9+++++----
Mdrivers/staging/rtl8723bs/os_dep/ioctl_linux.c | 4++--
Mdrivers/staging/rtl8723bs/os_dep/os_intfs.c | 6+++---
Mdrivers/staging/rtl8723bs/os_dep/xmit_linux.c | 2+-
Mdrivers/staging/rtlwifi/base.c | 71++++++++++++++++++++++++++++++++++++++++-------------------------------
Mdrivers/staging/rtlwifi/base.h | 6+++---
Mdrivers/staging/rtlwifi/btcoexist/halbtcoutsrc.c | 13+------------
Mdrivers/staging/rtlwifi/core.c | 3++-
Mdrivers/staging/rtlwifi/phydm/phydm.c | 2+-
Mdrivers/staging/rtlwifi/phydm/phydm_adc_sampling.c | 11+++++------
Mdrivers/staging/rtlwifi/phydm/phydm_ccx.c | 11++++++-----
Mdrivers/staging/rtlwifi/phydm/phydm_debug.c | 35++++++++++++-----------------------
Mdrivers/staging/rtlwifi/phydm/phydm_dig.c | 9++-------
Mdrivers/staging/rtlwifi/phydm/phydm_edcaturbocheck.c | 8++++----
Mdrivers/staging/rtlwifi/phydm/phydm_hwconfig.c | 113++++++++++++++++---------------------------------------------------------------
Mdrivers/staging/rtlwifi/phydm/phydm_hwconfig.h | 12------------
Mdrivers/staging/rtlwifi/phydm/phydm_psd.c | 7+------
Mdrivers/staging/rtlwifi/ps.c | 4++--
Mdrivers/staging/rts5208/general.c | 17+++--------------
Mdrivers/staging/rts5208/general.h | 18+++---------------
Mdrivers/staging/rts5208/ms.c | 17+++--------------
Mdrivers/staging/rts5208/ms.h | 18+++---------------
Mdrivers/staging/rts5208/rtsx.c | 17+++--------------
Mdrivers/staging/rts5208/rtsx.h | 18+++---------------
Mdrivers/staging/rts5208/rtsx_card.c | 17+++--------------
Mdrivers/staging/rts5208/rtsx_card.h | 18+++---------------
Mdrivers/staging/rts5208/rtsx_chip.c | 17+++--------------
Mdrivers/staging/rts5208/rtsx_chip.h | 18+++---------------
Mdrivers/staging/rts5208/rtsx_scsi.c | 17+++--------------
Mdrivers/staging/rts5208/rtsx_scsi.h | 18+++---------------
Mdrivers/staging/rts5208/rtsx_sys.h | 18+++---------------
Mdrivers/staging/rts5208/rtsx_transport.c | 14+-------------
Mdrivers/staging/rts5208/rtsx_transport.h | 18+++---------------
Mdrivers/staging/rts5208/sd.c | 17+++--------------
Mdrivers/staging/rts5208/sd.h | 18+++---------------
Mdrivers/staging/rts5208/spi.c | 17+++--------------
Mdrivers/staging/rts5208/spi.h | 18+++---------------
Mdrivers/staging/rts5208/xd.c | 17+++--------------
Mdrivers/staging/rts5208/xd.h | 20++++----------------
Mdrivers/staging/sm750fb/sm750_accel.c | 3++-
Mdrivers/staging/speakup/i18n.c | 2+-
Mdrivers/staging/speakup/kobjects.c | 2+-
Mdrivers/staging/speakup/speakup_acntpc.c | 3++-
Mdrivers/staging/speakup/speakup_decpc.c | 6+++---
Mdrivers/staging/speakup/speakup_keypc.c | 2+-
Mdrivers/staging/speakup/spk_priv.h | 6++++--
Mdrivers/staging/speakup/spk_ttyio.c | 9+++++----
Mdrivers/staging/unisys/visorhba/visorhba_main.c | 14+-------------
Mdrivers/staging/vboxvideo/Makefile | 2--
Mdrivers/staging/vboxvideo/hgsmi_base.c | 99++++++++++++++++++++++++-------------------------------------------------------
Mdrivers/staging/vboxvideo/hgsmi_ch_setup.h | 40+++-------------------------------------
Mdrivers/staging/vboxvideo/hgsmi_channels.h | 23++---------------------
Mdrivers/staging/vboxvideo/hgsmi_defs.h | 23++---------------------
Mdrivers/staging/vboxvideo/modesetting.c | 71++++++++++++++++++++++++++---------------------------------------------
Mdrivers/staging/vboxvideo/vbox_drv.c | 55+++++++++----------------------------------------------
Mdrivers/staging/vboxvideo/vbox_drv.h | 40++++++++--------------------------------
Ddrivers/staging/vboxvideo/vbox_err.h | 50--------------------------------------------------
Mdrivers/staging/vboxvideo/vbox_fb.c | 33+++------------------------------
Mdrivers/staging/vboxvideo/vbox_hgsmi.c | 22+---------------------
Mdrivers/staging/vboxvideo/vbox_irq.c | 26+++-----------------------
Mdrivers/staging/vboxvideo/vbox_main.c | 101++++++++++++++++++++-----------------------------------------------------------
Mdrivers/staging/vboxvideo/vbox_mode.c | 56++++++++++++++++++--------------------------------------
Mdrivers/staging/vboxvideo/vbox_prime.c | 20+-------------------
Mdrivers/staging/vboxvideo/vbox_ttm.c | 27++++-----------------------
Mdrivers/staging/vboxvideo/vboxvideo.h | 143++++++++++++++++++++++++++-----------------------------------------------------
Mdrivers/staging/vboxvideo/vboxvideo_guest.h | 50++++++++------------------------------------------
Mdrivers/staging/vboxvideo/vboxvideo_vbe.h | 34++--------------------------------
Mdrivers/staging/vboxvideo/vbva_base.c | 27++++-----------------------
Mdrivers/staging/vc04_services/bcm2835-audio/Kconfig | 2+-
Mdrivers/staging/vc04_services/bcm2835-audio/TODO | 25+++----------------------
Mdrivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c | 30++++++++++++++++++++++--------
Mdrivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c | 42++++++++++++++++++------------------------
Mdrivers/staging/vc04_services/bcm2835-audio/bcm2835.c | 73++++++++++++++++++++-----------------------------------------------------
Mdrivers/staging/vc04_services/bcm2835-audio/bcm2835.h | 1+
Mdrivers/staging/vc04_services/bcm2835-audio/vc_vchi_audioserv_defs.h | 6++++--
Mdrivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c | 78++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------------
Mdrivers/staging/vc04_services/bcm2835-camera/mmal-vchiq.c | 35+++++++++++++++++++----------------
Mdrivers/staging/vc04_services/interface/vchi/TODO | 42++++++++++++++++++++++++++++++++++++++++++
Mdrivers/staging/vc04_services/interface/vchi/vchi.h | 46+++++++++++++++++++---------------------------
Mdrivers/staging/vc04_services/interface/vchi/vchi_common.h | 12++++++------
Ddrivers/staging/vc04_services/interface/vchi/vchi_mh.h | 42------------------------------------------
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c | 64+++++++++++++++++++++++++---------------------------------------
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 938+++++++++++++++++++++++++++++++++++++------------------------------------------
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h | 61++++++++++++++++++++++++++++++++-----------------------------
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_connected.c | 1-
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c | 930++++++++++++++++++++++++++-----------------------------------------------------
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h | 245++++++++++++++++++++++++++++++++++++++-----------------------------------------
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_debugfs.c | 17+++--------------
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_debugfs.h | 4++--
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_if.h | 42++++++++++++++++++++----------------------
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_ioctl.h | 64++++++++++++++++++++++++++++++++--------------------------------
Ddrivers/staging/vc04_services/interface/vchiq_arm/vchiq_killable.h | 55-------------------------------------------------------
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_pagelist.h | 4++--
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_shim.c | 64+++++++++++++++++-----------------------------------------------
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_util.c | 68++++++++++++++++++--------------------------------------------------
Mdrivers/staging/vc04_services/interface/vchiq_arm/vchiq_util.h | 27++++++++++++++-------------
Mdrivers/staging/vt6655/baseband.c | 2+-
Mdrivers/staging/wilc1000/Makefile | 3+--
Ddrivers/staging/wilc1000/coreconfigurator.c | 287-------------------------------------------------------------------------------
Ddrivers/staging/wilc1000/coreconfigurator.h | 81-------------------------------------------------------------------------------
Mdrivers/staging/wilc1000/host_interface.c | 2872++++++++++++++++++++++---------------------------------------------------------
Mdrivers/staging/wilc1000/host_interface.h | 242+++++++++++++++++++++++++++++++------------------------------------------------
Mdrivers/staging/wilc1000/linux_wlan.c | 92++++++++++++++++++++++++++++++++-----------------------------------------------
Mdrivers/staging/wilc1000/wilc_sdio.c | 23++++++++++++++++++++++-
Mdrivers/staging/wilc1000/wilc_spi.c | 13++++++-------
Mdrivers/staging/wilc1000/wilc_wfi_cfgoperations.c | 328++++++++++++++++++++++++++++++++-----------------------------------------------
Mdrivers/staging/wilc1000/wilc_wfi_netdevice.h | 74+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------
Mdrivers/staging/wilc1000/wilc_wlan.c | 115+++++++++++++++++++++++++++++++++++++++----------------------------------------
Mdrivers/staging/wilc1000/wilc_wlan_cfg.c | 1-
Mdrivers/staging/wilc1000/wilc_wlan_if.h | 221++++++++++++++++++++++++++++++++++++++++++-------------------------------------
Mdrivers/staging/wlan-ng/cfg80211.c | 3++-
Mdrivers/staging/wlan-ng/prism2fw.c | 4+---
Mdrivers/staging/wlan-ng/prism2mib.c | 26++++++++++++++------------
Mdrivers/staging/xgifb/XGI_main_26.c | 5+++--
Mdrivers/staging/xgifb/vb_setmode.c | 7++++---
Minclude/linux/iio/adc/ad_sigma_delta.h | 3+++
Minclude/linux/iio/common/st_sensors.h | 2+-
Minclude/linux/platform_data/st_sensors_pdata.h | 2++
Mtools/iio/Makefile | 2+-
410 files changed, 12768 insertions(+), 11373 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/accel/lis302.txt b/Documentation/devicetree/bindings/iio/accel/lis302.txt @@ -64,7 +64,7 @@ Optional properties for all bus drivers: Example for a SPI device node: - lis302@0 { + accelerometer@0 { compatible = "st,lis302dl-spi"; reg = <0>; spi-max-frequency = <1000000>; @@ -89,7 +89,7 @@ Example for a SPI device node: Example for a I2C device node: - lis331dlh: lis331dlh@18 { + lis331dlh: accelerometer@18 { compatible = "st,lis331dlh", "st,lis3lv02d"; reg = <0x18>; Vdd-supply = <&lis3_reg>; diff --git a/Documentation/devicetree/bindings/iio/adc/ad7949.txt b/Documentation/devicetree/bindings/iio/adc/ad7949.txt @@ -0,0 +1,16 @@ +* Analog Devices AD7949/AD7682/AD7689 + +Required properties: + - compatible: Should be one of + * "adi,ad7949" + * "adi,ad7682" + * "adi,ad7689" + - reg: spi chip select number for the device + - vref-supply: The regulator supply for ADC reference voltage + +Example: +adc@0 { + compatible = "adi,ad7949"; + reg = <0>; + vref-supply = <&vdd_supply>; +}; diff --git a/Documentation/devicetree/bindings/iio/adc/adc.txt b/Documentation/devicetree/bindings/iio/adc/adc.txt @@ -0,0 +1,23 @@ +Common ADCs properties + +Optional properties for child nodes: +- bipolar : Boolean, if set the channel is used in bipolar mode. +- diff-channels : Differential channels muxed for this ADC. The first value + specifies the positive input pin, the second value the negative + input pin. + +Example: + adc@0 { + compatible = "some,adc"; + ... + channel@0 { + bipolar; + diff-channels = <0 1>; + ... + }; + + channel@1 { + diff-channels = <2 3>; + ... + }; + }; diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt @@ -0,0 +1,75 @@ +Analog Devices AD7124 ADC device driver + +Required properties for the AD7124: + - compatible: Must be one of "adi,ad7124-4" or "adi,ad7124-8" + - reg: SPI chip select number for the device + - spi-max-frequency: Max SPI frequency to use + see: Documentation/devicetree/bindings/spi/spi-bus.txt + - clocks: phandle to the master clock (mclk) + see: Documentation/devicetree/bindings/clock/clock-bindings.txt + - clock-names: Must be "mclk". + - interrupts: IRQ line for the ADC + see: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt + + Required properties: + * #address-cells: Must be 1. + * #size-cells: Must be 0. + + Subnode(s) represent the external channels which are connected to the ADC. + Each subnode represents one channel and has the following properties: + Required properties: + * reg: The channel number. It can have up to 4 channels on ad7124-4 + and 8 channels on ad7124-8, numbered from 0 to 15. + * diff-channels: see: Documentation/devicetree/bindings/iio/adc/adc.txt + + Optional properties: + * bipolar: see: Documentation/devicetree/bindings/iio/adc/adc.txt + * adi,reference-select: Select the reference source to use when + converting on the the specific channel. Valid values are: + 0: REFIN1(+)/REFIN1(−). + 1: REFIN2(+)/REFIN2(−). + 3: AVDD + If this field is left empty, internal reference is selected. + +Optional properties: + - refin1-supply: refin1 supply can be used as reference for conversion. + - refin2-supply: refin2 supply can be used as reference for conversion. + - avdd-supply: avdd supply can be used as reference for conversion. + +Example: + adc@0 { + compatible = "adi,ad7124-4"; + reg = <0>; + spi-max-frequency = <5000000>; + interrupts = <25 2>; + interrupt-parent = <&gpio>; + refin1-supply = <&adc_vref>; + clocks = <&ad7124_mclk>; + clock-names = "mclk"; + + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + diff-channels = <0 1>; + adi,reference-select = <0>; + }; + + channel@1 { + reg = <1>; + bipolar; + diff-channels = <2 3>; + adi,reference-select = <0>; + }; + + channel@2 { + reg = <2>; + diff-channels = <4 5>; + }; + + channel@3 { + reg = <3>; + diff-channels = <6 7>; + }; + }; diff --git a/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt b/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt @@ -22,6 +22,12 @@ Required properties: - vref-supply: the regulator supply for the ADC reference voltage - #io-channel-cells: must be 1, see ../iio-bindings.txt +Optional properties: +- nvmem-cells: phandle to the temperature_calib eFuse cells +- nvmem-cell-names: if present (to enable the temperature sensor + calibration) this must contain "temperature_calib" + + Example: saradc: adc@8680 { compatible = "amlogic,meson-gxl-saradc", "amlogic,meson-saradc"; diff --git a/Documentation/devicetree/bindings/iio/adc/samsung,exynos-adc.txt b/Documentation/devicetree/bindings/iio/adc/samsung,exynos-adc.txt @@ -11,7 +11,7 @@ New driver handles the following Required properties: - compatible: Must be "samsung,exynos-adc-v1" - for exynos4412/5250 and s5pv210 controllers. + for exynos4412/5250 controllers. Must be "samsung,exynos-adc-v2" for future controllers. Must be "samsung,exynos3250-adc" for @@ -28,6 +28,8 @@ Required properties: the ADC in s3c2443 and compatibles Must be "samsung,s3c6410-adc" for the ADC in s3c6410 and compatibles + Must be "samsung,s5pv210-adc" for + the ADC in s5pv210 and compatibles - reg: List of ADC register address range - The base address and range of ADC register - The base address and range of ADC_PHY register (every diff --git a/Documentation/devicetree/bindings/iio/adc/ti-adc128s052.txt b/Documentation/devicetree/bindings/iio/adc/ti-adc128s052.txt @@ -1,7 +1,14 @@ * Texas Instruments' ADC128S052, ADC122S021 and ADC124S021 ADC chip Required properties: - - compatible: Should be "ti,adc128s052", "ti,adc122s021" or "ti,adc124s021" + - compatible: Should be one of: + - "ti,adc128s052" + - "ti,adc122s021" + - "ti,adc122s051" + - "ti,adc122s101" + - "ti,adc124s021" + - "ti,adc124s051" + - "ti,adc124s101" - reg: spi chip select number for the device - vref-supply: The regulator supply for ADC reference voltage diff --git a/Documentation/devicetree/bindings/iio/dac/ti,dac7311.txt b/Documentation/devicetree/bindings/iio/dac/ti,dac7311.txt @@ -0,0 +1,23 @@ +TI DAC7311 device tree bindings + +Required properties: +- compatible: must be set to: + * "ti,dac7311" + * "ti,dac6311" + * "ti,dac5311" +- reg: spi chip select number for the device +- vref-supply: The regulator supply for ADC reference voltage + +Optional properties: +- spi-max-frequency: Max SPI frequency to use + +Example: + + spi_master { + dac@0 { + compatible = "ti,dac7311"; + reg = <0>; /* CS0 */ + spi-max-frequency = <1000000>; + vref-supply = <&vdd_supply>; + }; + }; diff --git a/Documentation/devicetree/bindings/iio/imu/st_lsm6dsx.txt b/Documentation/devicetree/bindings/iio/imu/st_lsm6dsx.txt @@ -13,6 +13,7 @@ Required properties: Optional properties: - st,drdy-int-pin: the pin on the package that will be used to signal "data ready" (valid values: 1 or 2). +- st,pullups : enable/disable internal i2c controller pullup resistors. - drive-open-drain: the interrupt/data ready line will be configured as open drain, which is useful if several sensors share the same interrupt line. This is a boolean property. diff --git a/Documentation/devicetree/bindings/iio/light/vcnl4035.txt b/Documentation/devicetree/bindings/iio/light/vcnl4035.txt @@ -0,0 +1,18 @@ +VISHAY VCNL4035 - Ambient Light and proximity sensor + +Link to datasheet: https://www.vishay.com/docs/84251/vcnl4035x01.pdf + +Required properties: + + -compatible: should be "vishay,vcnl4035" + -reg: I2C address of the sensor, should be 0x60 + -interrupts: interrupt mapping for GPIO IRQ (level active low) + +Example: + +light-sensor@60 { + compatible = "vishay,vcnl4035"; + reg = <0x60>; + interrupt-parent = <&gpio4>; + interrupts = <11 IRQ_TYPE_LEVEL_LOW>; +}; diff --git a/Documentation/devicetree/bindings/iio/magnetometer/pni,rm3100.txt b/Documentation/devicetree/bindings/iio/magnetometer/pni,rm3100.txt @@ -0,0 +1,20 @@ +* PNI RM3100 3-axis magnetometer sensor + +Required properties: + +- compatible : should be "pni,rm3100" +- reg : the I2C address or SPI chip select number of the sensor. + +Optional properties: + +- interrupts: data ready (DRDY) from the chip. + The interrupts can be triggered on level high. + +Example: + +rm3100: rm3100@20 { + compatible = "pni,rm3100"; + reg = <0x20>; + interrupt-parent = <&gpio0>; + interrupts = <4 IRQ_TYPE_LEVEL_HIGH>; +}; diff --git a/Documentation/devicetree/bindings/iio/potentiometer/mcp41010.txt b/Documentation/devicetree/bindings/iio/potentiometer/mcp41010.txt @@ -0,0 +1,28 @@ +* Microchip MCP41010/41050/41100/42010/42050/42100 Digital Potentiometer + +Datasheet publicly available at: +http://ww1.microchip.com/downloads/en/devicedoc/11195c.pdf + +The node for this driver must be a child node of a SPI controller, hence +all mandatory properties described in + + Documentation/devicetree/bindings/spi/spi-bus.txt + +must be specified. + +Required properties: + - compatible: Must be one of the following, depending on the + model: + "microchip,mcp41010" + "microchip,mcp41050" + "microchip,mcp41100" + "microchip,mcp42010" + "microchip,mcp42050" + "microchip,mcp42100" + +Example: +potentiometer@0 { + compatible = "microchip,mcp41010"; + reg = <0>; + spi-max-frequency = <500000>; +}; diff --git a/Documentation/devicetree/bindings/iio/resolver/ad2s90.txt b/Documentation/devicetree/bindings/iio/resolver/ad2s90.txt @@ -0,0 +1,31 @@ +Analog Devices AD2S90 Resolver-to-Digital Converter + +https://www.analog.com/en/products/ad2s90.html + +Required properties: + - compatible: should be "adi,ad2s90" + - reg: SPI chip select number for the device + - spi-max-frequency: set maximum clock frequency, must be 830000 + - spi-cpol and spi-cpha: + Either SPI mode (0,0) or (1,1) must be used, so specify none or both of + spi-cpha, spi-cpol. + +See for more details: + Documentation/devicetree/bindings/spi/spi-bus.txt + +Note about max frequency: + Chip's max frequency, as specified in its datasheet, is 2Mhz. But a 600ns + delay is expected between the application of a logic LO to CS and the + application of SCLK, as also specified. And since the delay is not + implemented in the spi code, to satisfy it, SCLK's period should be at most + 2 * 600ns, so the max frequency should be 1 / (2 * 6e-7), which gives + roughly 830000Hz. + +Example: +resolver@0 { + compatible = "adi,ad2s90"; + reg = <0>; + spi-max-frequency = <830000>; + spi-cpol; + spi-cpha; +}; diff --git a/Documentation/devicetree/bindings/iio/st-sensors.txt b/Documentation/devicetree/bindings/iio/st-sensors.txt @@ -48,6 +48,7 @@ Accelerometers: - st,lis3l02dq - st,lis2dw12 - st,lis3dhh +- st,lis3de Gyroscopes: - st,l3g4200d-gyro @@ -67,6 +68,7 @@ Magnetometers: - st,lsm303dlm-magn - st,lis3mdl-magn - st,lis2mdl +- st,lsm9ds1-magn Pressure sensors: - st,lps001wp-press diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -305,6 +305,7 @@ pixcir PIXCIR MICROELECTRONICS Co., Ltd plathome Plat'Home Co., Ltd. plda PLDA plx Broadcom Corporation (formerly PLX Technology) +pni PNI Sensor Corporation portwell Portwell Inc. poslab Poslab Technology Co., Ltd. powervr PowerVR (deprecated, use img) @@ -417,6 +418,7 @@ vamrs Vamrs Ltd. variscite Variscite Ltd. via VIA Technologies, Inc. virtio Virtual I/O Device Specification, developed by the OASIS consortium +vishay Vishay Intertechnology, Inc vitesse Vitesse Semiconductor Corporation vivante Vivante Corporation vocore VoCore Studio diff --git a/MAINTAINERS b/MAINTAINERS @@ -846,6 +846,14 @@ S: Supported F: drivers/iio/dac/ad5758.c F: Documentation/devicetree/bindings/iio/dac/ad5758.txt +ANALOG DEVICES INC AD7124 DRIVER +M: Stefan Popa <stefan.popa@analog.com> +L: linux-iio@vger.kernel.org +W: http://ez.analog.com/community/linux-device-drivers +S: Supported +F: drivers/iio/adc/ad7124.c +F: Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt + ANALOG DEVICES INC AD9389B DRIVER M: Hans Verkuil <hans.verkuil@cisco.com> L: linux-media@vger.kernel.org @@ -6906,6 +6914,14 @@ L: linux-input@vger.kernel.org S: Maintained F: drivers/input/touchscreen/htcpen.c +HTS221 TEMPERATURE-HUMIDITY IIO DRIVER +M: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> +L: linux-iio@vger.kernel.org +W: http://www.st.com/ +S: Maintained +F: drivers/iio/humidity/hts221* +F: Documentation/devicetree/bindings/iio/humidity/hts221.txt + HUAWEI ETHERNET DRIVER M: Aviad Krawczyk <aviad.krawczyk@huawei.com> L: netdev@vger.kernel.org @@ -12055,6 +12071,13 @@ M: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com> S: Maintained F: drivers/pnp/ +PNI RM3100 IIO DRIVER +M: Song Qiang <songqiang1304521@gmail.com> +L: linux-iio@vger.kernel.org +S: Maintained +F: drivers/iio/magnetometer/rm3100* +F: Documentation/devicetree/bindings/iio/magnetometer/pni,rm3100.txt + POSIX CLOCKS and TIMERS M: Thomas Gleixner <tglx@linutronix.de> L: linux-kernel@vger.kernel.org @@ -12840,7 +12863,8 @@ RENESAS R-CAR GYROADC DRIVER M: Marek Vasut <marek.vasut@gmail.com> L: linux-iio@vger.kernel.org S: Supported -F: drivers/iio/adc/rcar_gyro_adc.c +F: Documentation/devicetree/bindings/iio/adc/renesas,gyroadc.txt +F: drivers/iio/adc/rcar-gyroadc.c RENESAS R-CAR I2C DRIVERS M: Wolfram Sang <wsa+renesas@sang-engineering.com> @@ -14275,6 +14299,14 @@ M: Jan-Benedict Glaw <jbglaw@lug-owl.de> S: Maintained F: arch/alpha/kernel/srm_env.c +ST LSM6DSx IMU IIO DRIVER +M: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> +L: linux-iio@vger.kernel.org +W: http://www.st.com/ +S: Maintained +F: drivers/iio/imu/st_lsm6dsx/ +F: Documentation/devicetree/bindings/iio/imu/st_lsm6dsx.txt + ST STM32 I2C/SMBUS DRIVER M: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> L: linux-i2c@vger.kernel.org @@ -14360,8 +14392,8 @@ S: Odd Fixes F: drivers/staging/vt665?/ STAGING - WILC1000 WIFI DRIVER -M: Aditya Shankar <aditya.shankar@microchip.com> -M: Ganesh Krishna <ganesh.krishna@microchip.com> +M: Adham Abozaeid <adham.abozaeid@microchip.com> +M: Ajay Singh <ajay.kathat@microchip.com> L: linux-wireless@vger.kernel.org S: Supported F: drivers/staging/wilc1000/ diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig @@ -223,7 +223,7 @@ config IIO_ST_ACCEL_3AXIS Say yes here to build support for STMicroelectronics accelerometers: LSM303DLH, LSM303DLHC, LIS3DH, LSM330D, LSM330DL, LSM330DLC, LIS331DLH, LSM303DL, LSM303DLM, LSM330, LIS2DH12, H3LIS331DL, - LNG2DM + LNG2DM, LIS3DE This driver can also be built as a module. If so, these modules will be created: diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c @@ -1489,8 +1489,11 @@ static const struct acpi_device_id kx_acpi_match[] = { {"KXCJ1013", KXCJK1013}, {"KXCJ1008", KXCJ91008}, {"KXCJ9000", KXCJ91008}, + {"KIOX0009", KXTJ21009}, {"KIOX000A", KXCJ91008}, + {"KIOX010A", KXCJ91008}, /* KXCJ91008 inside the display of a 2-in-1 */ {"KXTJ1009", KXTJ21009}, + {"KXJ2109", KXTJ21009}, {"SMO8500", KXCJ91008}, { }, }; diff --git a/drivers/iio/accel/st_accel.h b/drivers/iio/accel/st_accel.h @@ -56,6 +56,7 @@ enum st_accel_type { #define LNG2DM_ACCEL_DEV_NAME "lng2dm" #define LIS2DW12_ACCEL_DEV_NAME "lis2dw12" #define LIS3DHH_ACCEL_DEV_NAME "lis3dhh" +#define LIS3DE_ACCEL_DEV_NAME "lis3de" /** * struct st_sensors_platform_data - default accel platform data diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c @@ -103,6 +103,7 @@ static const struct st_sensor_settings st_accel_sensors_settings[] = { [4] = LSM330DLC_ACCEL_DEV_NAME, [5] = LSM303AGR_ACCEL_DEV_NAME, [6] = LIS2DH12_ACCEL_DEV_NAME, + [7] = LIS3DE_ACCEL_DEV_NAME, }, .ch = (struct iio_chan_spec *)st_accel_12bit_channels, .odr = { diff --git a/drivers/iio/accel/st_accel_i2c.c b/drivers/iio/accel/st_accel_i2c.c @@ -98,6 +98,10 @@ static const struct of_device_id st_accel_of_match[] = { .compatible = "st,lis2dw12", .data = LIS2DW12_ACCEL_DEV_NAME, }, + { + .compatible = "st,lis3de", + .data = LIS3DE_ACCEL_DEV_NAME, + }, {}, }; MODULE_DEVICE_TABLE(of, st_accel_of_match); @@ -135,6 +139,7 @@ static const struct i2c_device_id st_accel_id_table[] = { { LIS331DL_ACCEL_DEV_NAME }, { LIS3LV02DL_ACCEL_DEV_NAME }, { LIS2DW12_ACCEL_DEV_NAME }, + { LIS3DE_ACCEL_DEV_NAME }, {}, }; MODULE_DEVICE_TABLE(i2c, st_accel_id_table); diff --git a/drivers/iio/accel/st_accel_spi.c b/drivers/iio/accel/st_accel_spi.c @@ -90,6 +90,10 @@ static const struct of_device_id st_accel_of_match[] = { .compatible = "st,lis3dhh", .data = LIS3DHH_ACCEL_DEV_NAME, }, + { + .compatible = "st,lis3de", + .data = LIS3DE_ACCEL_DEV_NAME, + }, {} }; MODULE_DEVICE_TABLE(of, st_accel_of_match); @@ -143,6 +147,7 @@ static const struct spi_device_id st_accel_id_table[] = { { LIS3LV02DL_ACCEL_DEV_NAME }, { LIS2DW12_ACCEL_DEV_NAME }, { LIS3DHH_ACCEL_DEV_NAME }, + { LIS3DE_ACCEL_DEV_NAME }, {}, }; MODULE_DEVICE_TABLE(spi, st_accel_id_table); diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig @@ -10,6 +10,17 @@ config AD_SIGMA_DELTA select IIO_BUFFER select IIO_TRIGGERED_BUFFER +config AD7124 + tristate "Analog Devices AD7124 and similar sigma-delta ADCs driver" + depends on SPI_MASTER + select AD_SIGMA_DELTA + help + Say yes here to build support for Analog Devices AD7124-4 and AD7124-8 + SPI analog to digital converters (ADC). + + To compile this driver as a module, choose M here: the module will be + called ad7124. + config AD7266 tristate "Analog Devices AD7265/AD7266 ADC driver" depends on SPI_MASTER @@ -116,6 +127,16 @@ config AD7923 To compile this driver as a module, choose M here: the module will be called ad7923. +config AD7949 + tristate "Analog Devices AD7949 and similar ADCs driver" + depends on SPI + help + Say yes here to build support for Analog Devices + AD7949, AD7682, AD7689 8 Channel ADCs. + + To compile this driver as a module, choose M here: the + module will be called ad7949. + config AD799X tristate "Analog Devices AD799x ADC driver" depends on I2C @@ -274,7 +295,7 @@ config EP93XX_ADC config EXYNOS_ADC tristate "Exynos ADC driver support" - depends on ARCH_EXYNOS || ARCH_S3C24XX || ARCH_S3C64XX || (OF && COMPILE_TEST) + depends on ARCH_EXYNOS || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210 || (OF && COMPILE_TEST) depends on HAS_IOMEM help Core support for the ADC block found in the Samsung EXYNOS series diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile @@ -5,6 +5,7 @@ # When adding new entries keep the list in alphabetical order obj-$(CONFIG_AD_SIGMA_DELTA) += ad_sigma_delta.o +obj-$(CONFIG_AD7124) += ad7124.o obj-$(CONFIG_AD7266) += ad7266.o obj-$(CONFIG_AD7291) += ad7291.o obj-$(CONFIG_AD7298) += ad7298.o @@ -14,6 +15,7 @@ obj-$(CONFIG_AD7766) += ad7766.o obj-$(CONFIG_AD7791) += ad7791.o obj-$(CONFIG_AD7793) += ad7793.o obj-$(CONFIG_AD7887) += ad7887.o +obj-$(CONFIG_AD7949) += ad7949.o obj-$(CONFIG_AD799X) += ad799x.o obj-$(CONFIG_ASPEED_ADC) += aspeed_adc.o obj-$(CONFIG_AT91_ADC) += at91_adc.o diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c @@ -0,0 +1,684 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * AD7124 SPI ADC driver + * + * Copyright 2018 Analog Devices Inc. + */ +#include <linux/bitfield.h> +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/err.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/regulator/consumer.h> +#include <linux/spi/spi.h> + +#include <linux/iio/iio.h> +#include <linux/iio/adc/ad_sigma_delta.h> +#include <linux/iio/sysfs.h> + +/* AD7124 registers */ +#define AD7124_COMMS 0x00 +#define AD7124_STATUS 0x00 +#define AD7124_ADC_CONTROL 0x01 +#define AD7124_DATA 0x02 +#define AD7124_IO_CONTROL_1 0x03 +#define AD7124_IO_CONTROL_2 0x04 +#define AD7124_ID 0x05 +#define AD7124_ERROR 0x06 +#define AD7124_ERROR_EN 0x07 +#define AD7124_MCLK_COUNT 0x08 +#define AD7124_CHANNEL(x) (0x09 + (x)) +#define AD7124_CONFIG(x) (0x19 + (x)) +#define AD7124_FILTER(x) (0x21 + (x)) +#define AD7124_OFFSET(x) (0x29 + (x)) +#define AD7124_GAIN(x) (0x31 + (x)) + +/* AD7124_STATUS */ +#define AD7124_STATUS_POR_FLAG_MSK BIT(4) + +/* AD7124_ADC_CONTROL */ +#define AD7124_ADC_CTRL_PWR_MSK GENMASK(7, 6) +#define AD7124_ADC_CTRL_PWR(x) FIELD_PREP(AD7124_ADC_CTRL_PWR_MSK, x) +#define AD7124_ADC_CTRL_MODE_MSK GENMASK(5, 2) +#define AD7124_ADC_CTRL_MODE(x) FIELD_PREP(AD7124_ADC_CTRL_MODE_MSK, x) + +/* AD7124_CHANNEL_X */ +#define AD7124_CHANNEL_EN_MSK BIT(15) +#define AD7124_CHANNEL_EN(x) FIELD_PREP(AD7124_CHANNEL_EN_MSK, x) +#define AD7124_CHANNEL_SETUP_MSK GENMASK(14, 12) +#define AD7124_CHANNEL_SETUP(x) FIELD_PREP(AD7124_CHANNEL_SETUP_MSK, x) +#define AD7124_CHANNEL_AINP_MSK GENMASK(9, 5) +#define AD7124_CHANNEL_AINP(x) FIELD_PREP(AD7124_CHANNEL_AINP_MSK, x) +#define AD7124_CHANNEL_AINM_MSK GENMASK(4, 0) +#define AD7124_CHANNEL_AINM(x) FIELD_PREP(AD7124_CHANNEL_AINM_MSK, x) + +/* AD7124_CONFIG_X */ +#define AD7124_CONFIG_BIPOLAR_MSK BIT(11) +#define AD7124_CONFIG_BIPOLAR(x) FIELD_PREP(AD7124_CONFIG_BIPOLAR_MSK, x) +#define AD7124_CONFIG_REF_SEL_MSK GENMASK(4, 3) +#define AD7124_CONFIG_REF_SEL(x) FIELD_PREP(AD7124_CONFIG_REF_SEL_MSK, x) +#define AD7124_CONFIG_PGA_MSK GENMASK(2, 0) +#define AD7124_CONFIG_PGA(x) FIELD_PREP(AD7124_CONFIG_PGA_MSK, x) + +/* AD7124_FILTER_X */ +#define AD7124_FILTER_FS_MSK GENMASK(10, 0) +#define AD7124_FILTER_FS(x) FIELD_PREP(AD7124_FILTER_FS_MSK, x) + +enum ad7124_ids { + ID_AD7124_4, + ID_AD7124_8, +}; + +enum ad7124_ref_sel { + AD7124_REFIN1, + AD7124_REFIN2, + AD7124_INT_REF, + AD7124_AVDD_REF, +}; + +enum ad7124_power_mode { + AD7124_LOW_POWER, + AD7124_MID_POWER, + AD7124_FULL_POWER, +}; + +static const unsigned int ad7124_gain[8] = { + 1, 2, 4, 8, 16, 32, 64, 128 +}; + +static const int ad7124_master_clk_freq_hz[3] = { + [AD7124_LOW_POWER] = 76800, + [AD7124_MID_POWER] = 153600, + [AD7124_FULL_POWER] = 614400, +}; + +static const char * const ad7124_ref_names[] = { + [AD7124_REFIN1] = "refin1", + [AD7124_REFIN2] = "refin2", + [AD7124_INT_REF] = "int", + [AD7124_AVDD_REF] = "avdd", +}; + +struct ad7124_chip_info { + unsigned int num_inputs; +}; + +struct ad7124_channel_config { + enum ad7124_ref_sel refsel; + bool bipolar; + unsigned int ain; + unsigned int vref_mv; + unsigned int pga_bits; + unsigned int odr; +}; + +struct ad7124_state { + const struct ad7124_chip_info *chip_info; + struct ad_sigma_delta sd; + struct ad7124_channel_config channel_config[4]; + struct regulator *vref[4]; + struct clk *mclk; + unsigned int adc_control; + unsigned int num_channels; +}; + +static const struct iio_chan_spec ad7124_channel_template = { + .type = IIO_VOLTAGE, + .indexed = 1, + .differential = 1, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_OFFSET) | + BIT(IIO_CHAN_INFO_SAMP_FREQ), + .scan_type = { + .sign = 'u', + .realbits = 24, + .storagebits = 32, + .shift = 8, + .endianness = IIO_BE, + }, +}; + +static struct ad7124_chip_info ad7124_chip_info_tbl[] = { + [ID_AD7124_4] = { + .num_inputs = 8, + }, + [ID_AD7124_8] = { + .num_inputs = 16, + }, +}; + +static int ad7124_find_closest_match(const int *array, + unsigned int size, int val) +{ + int i, idx; + unsigned int diff_new, diff_old; + + diff_old = U32_MAX; + idx = 0; + + for (i = 0; i < size; i++) { + diff_new = abs(val - array[i]); + if (diff_new < diff_old) { + diff_old = diff_new; + idx = i; + } + } + + return idx; +} + +static int ad7124_spi_write_mask(struct ad7124_state *st, + unsigned int addr, + unsigned long mask, + unsigned int val, + unsigned int bytes) +{ + unsigned int readval; + int ret; + + ret = ad_sd_read_reg(&st->sd, addr, bytes, &readval); + if (ret < 0) + return ret; + + readval &= ~mask; + readval |= val; + + return ad_sd_write_reg(&st->sd, addr, bytes, readval); +} + +static int ad7124_set_mode(struct ad_sigma_delta *sd, + enum ad_sigma_delta_mode mode) +{ + struct ad7124_state *st = container_of(sd, struct ad7124_state, sd); + + st->adc_control &= ~AD7124_ADC_CTRL_MODE_MSK; + st->adc_control |= AD7124_ADC_CTRL_MODE(mode); + + return ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL, 2, st->adc_control); +} + +static int ad7124_set_channel(struct ad_sigma_delta *sd, unsigned int channel) +{ + struct ad7124_state *st = container_of(sd, struct ad7124_state, sd); + unsigned int val; + + val = st->channel_config[channel].ain | AD7124_CHANNEL_EN(1) | + AD7124_CHANNEL_SETUP(channel); + + return ad_sd_write_reg(&st->sd, AD7124_CHANNEL(channel), 2, val); +} + +static const struct ad_sigma_delta_info ad7124_sigma_delta_info = { + .set_channel = ad7124_set_channel, + .set_mode = ad7124_set_mode, + .has_registers = true, + .addr_shift = 0, + .read_mask = BIT(6), + .data_reg = AD7124_DATA, +}; + +static int ad7124_set_channel_odr(struct ad7124_state *st, + unsigned int channel, + unsigned int odr) +{ + unsigned int fclk, odr_sel_bits; + int ret; + + fclk = clk_get_rate(st->mclk); + /* + * FS[10:0] = fCLK / (fADC x 32) where: + * fADC is the output data rate + * fCLK is the master clock frequency + * FS[10:0] are the bits in the filter register + * FS[10:0] can have a value from 1 to 2047 + */ + odr_sel_bits = DIV_ROUND_CLOSEST(fclk, odr * 32); + if (odr_sel_bits < 1) + odr_sel_bits = 1; + else if (odr_sel_bits > 2047) + odr_sel_bits = 2047; + + ret = ad7124_spi_write_mask(st, AD7124_FILTER(channel), + AD7124_FILTER_FS_MSK, + AD7124_FILTER_FS(odr_sel_bits), 3); + if (ret < 0) + return ret; + /* fADC = fCLK / (FS[10:0] x 32) */ + st->channel_config[channel].odr = + DIV_ROUND_CLOSEST(fclk, odr_sel_bits * 32); + + return 0; +} + +static int ad7124_set_channel_gain(struct ad7124_state *st, + unsigned int channel, + unsigned int gain) +{ + unsigned int res; + int ret; + + res = ad7124_find_closest_match(ad7124_gain, + ARRAY_SIZE(ad7124_gain), gain); + ret = ad7124_spi_write_mask(st, AD7124_CONFIG(channel), + AD7124_CONFIG_PGA_MSK, + AD7124_CONFIG_PGA(res), 2); + if (ret < 0) + return ret; + + st->channel_config[channel].pga_bits = res; + + return 0; +} + +static int ad7124_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long info) +{ + struct ad7124_state *st = iio_priv(indio_dev); + int idx, ret; + + switch (info) { + case IIO_CHAN_INFO_RAW: + ret = ad_sigma_delta_single_conversion(indio_dev, chan, val); + if (ret < 0) + return ret; + + /* After the conversion is performed, disable the channel */ + ret = ad_sd_write_reg(&st->sd, + AD7124_CHANNEL(chan->address), 2, + st->channel_config[chan->address].ain | + AD7124_CHANNEL_EN(0)); + if (ret < 0) + return ret; + + return IIO_VAL_INT; + case IIO_CHAN_INFO_SCALE: + idx = st->channel_config[chan->address].pga_bits; + *val = st->channel_config[chan->address].vref_mv; + if (st->channel_config[chan->address].bipolar) + *val2 = chan->scan_type.realbits - 1 + idx; + else + *val2 = chan->scan_type.realbits + idx; + + return IIO_VAL_FRACTIONAL_LOG2; + case IIO_CHAN_INFO_OFFSET: + if (st->channel_config[chan->address].bipolar) + *val = -(1 << (chan->scan_type.realbits - 1)); + else + *val = 0; + + return IIO_VAL_INT; + case IIO_CHAN_INFO_SAMP_FREQ: + *val = st->channel_config[chan->address].odr; + + return IIO_VAL_INT; + default: + return -EINVAL; + } +} + +static int ad7124_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long info) +{ + struct ad7124_state *st = iio_priv(indio_dev); + unsigned int res, gain, full_scale, vref; + + switch (info) { + case IIO_CHAN_INFO_SAMP_FREQ: + if (val2 != 0) + return -EINVAL; + + return ad7124_set_channel_odr(st, chan->address, val); + case IIO_CHAN_INFO_SCALE: + if (val != 0) + return -EINVAL; + + if (st->channel_config[chan->address].bipolar) + full_scale = 1 << (chan->scan_type.realbits - 1); + else + full_scale = 1 << chan->scan_type.realbits; + + vref = st->channel_config[chan->address].vref_mv * 1000000LL; + res = DIV_ROUND_CLOSEST(vref, full_scale); + gain = DIV_ROUND_CLOSEST(res, val2); + + return ad7124_set_channel_gain(st, chan->address, gain); + default: + return -EINVAL; + } +} + +static IIO_CONST_ATTR(in_voltage_scale_available, + "0.000001164 0.000002328 0.000004656 0.000009313 0.000018626 0.000037252 0.000074505 0.000149011 0.000298023"); + +static struct attribute *ad7124_attributes[] = { + &iio_const_attr_in_voltage_scale_available.dev_attr.attr, + NULL, +}; + +static const struct attribute_group ad7124_attrs_group = { + .attrs = ad7124_attributes, +}; + +static const struct iio_info ad7124_info = { + .read_raw = ad7124_read_raw, + .write_raw = ad7124_write_raw, + .validate_trigger = ad_sd_validate_trigger, + .attrs = &ad7124_attrs_group, +}; + +static int ad7124_soft_reset(struct ad7124_state *st) +{ + unsigned int readval, timeout; + int ret; + + ret = ad_sd_reset(&st->sd, 64); + if (ret < 0) + return ret; + + timeout = 100; + do { + ret = ad_sd_read_reg(&st->sd, AD7124_STATUS, 1, &readval); + if (ret < 0) + return ret; + + if (!(readval & AD7124_STATUS_POR_FLAG_MSK)) + return 0; + + /* The AD7124 requires typically 2ms to power up and settle */ + usleep_range(100, 2000); + } while (--timeout); + + dev_err(&st->sd.spi->dev, "Soft reset failed\n"); + + return -EIO; +} + +static int ad7124_init_channel_vref(struct ad7124_state *st, + unsigned int channel_number) +{ + unsigned int refsel = st->channel_config[channel_number].refsel; + + switch (refsel) { + case AD7124_REFIN1: + case AD7124_REFIN2: + case AD7124_AVDD_REF: + if (IS_ERR(st->vref[refsel])) { + dev_err(&st->sd.spi->dev, + "Error, trying to use external voltage reference without a %s regulator.\n", + ad7124_ref_names[refsel]); + return PTR_ERR(st->vref[refsel]); + } + st->channel_config[channel_number].vref_mv = + regulator_get_voltage(st->vref[refsel]); + /* Conversion from uV to mV */ + st->channel_config[channel_number].vref_mv /= 1000; + break; + case AD7124_INT_REF: + st->channel_config[channel_number].vref_mv = 2500; + break; + default: + dev_err(&st->sd.spi->dev, "Invalid reference %d\n", refsel); + return -EINVAL; + } + + return 0; +} + +static int ad7124_of_parse_channel_config(struct iio_dev *indio_dev, + struct device_node *np) +{ + struct ad7124_state *st = iio_priv(indio_dev); + struct device_node *child; + struct iio_chan_spec *chan; + unsigned int ain[2], channel = 0, tmp; + int ret; + + st->num_channels = of_get_available_child_count(np); + if (!st->num_channels) { + dev_err(indio_dev->dev.parent, "no channel children\n"); + return -ENODEV; + } + + chan = devm_kcalloc(indio_dev->dev.parent, st->num_channels, + sizeof(*chan), GFP_KERNEL); + if (!chan) + return -ENOMEM; + + indio_dev->channels = chan; + indio_dev->num_channels = st->num_channels; + + for_each_available_child_of_node(np, child) { + ret = of_property_read_u32(child, "reg", &channel); + if (ret) + goto err; + + ret = of_property_read_u32_array(child, "diff-channels", + ain, 2); + if (ret) + goto err; + + if (ain[0] >= st->chip_info->num_inputs || + ain[1] >= st->chip_info->num_inputs) { + dev_err(indio_dev->dev.parent, + "Input pin number out of range.\n"); + ret = -EINVAL; + goto err; + } + st->channel_config[channel].ain = AD7124_CHANNEL_AINP(ain[0]) | + AD7124_CHANNEL_AINM(ain[1]); + st->channel_config[channel].bipolar = + of_property_read_bool(child, "bipolar"); + + ret = of_property_read_u32(child, "adi,reference-select", &tmp); + if (ret) + st->channel_config[channel].refsel = AD7124_INT_REF; + else + st->channel_config[channel].refsel = tmp; + + *chan = ad7124_channel_template; + chan->address = channel; + chan->scan_index = channel; + chan->channel = ain[0]; + chan->channel2 = ain[1]; + + chan++; + } + + return 0; +err: + of_node_put(child); + + return ret; +} + +static int ad7124_setup(struct ad7124_state *st) +{ + unsigned int val, fclk, power_mode; + int i, ret; + + fclk = clk_get_rate(st->mclk); + if (!fclk) + return -EINVAL; + + /* The power mode changes the master clock frequency */ + power_mode = ad7124_find_closest_match(ad7124_master_clk_freq_hz, + ARRAY_SIZE(ad7124_master_clk_freq_hz), + fclk); + if (fclk != ad7124_master_clk_freq_hz[power_mode]) { + ret = clk_set_rate(st->mclk, fclk); + if (ret) + return ret; + } + + /* Set the power mode */ + st->adc_control &= ~AD7124_ADC_CTRL_PWR_MSK; + st->adc_control |= AD7124_ADC_CTRL_PWR(power_mode); + ret = ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL, 2, st->adc_control); + if (ret < 0) + return ret; + + for (i = 0; i < st->num_channels; i++) { + val = st->channel_config[i].ain | AD7124_CHANNEL_SETUP(i); + ret = ad_sd_write_reg(&st->sd, AD7124_CHANNEL(i), 2, val); + if (ret < 0) + return ret; + + ret = ad7124_init_channel_vref(st, i); + if (ret < 0) + return ret; + + val = AD7124_CONFIG_BIPOLAR(st->channel_config[i].bipolar) | + AD7124_CONFIG_REF_SEL(st->channel_config[i].refsel); + ret = ad_sd_write_reg(&st->sd, AD7124_CONFIG(i), 2, val); + if (ret < 0) + return ret; + /* + * 9.38 SPS is the minimum output data rate supported + * regardless of the selected power mode. Round it up to 10 and + * set all the enabled channels to this default value. + */ + ret = ad7124_set_channel_odr(st, i, 10); + } + + return ret; +} + +static int ad7124_probe(struct spi_device *spi) +{ + const struct spi_device_id *id; + struct ad7124_state *st; + struct iio_dev *indio_dev; + int i, ret; + + indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st)); + if (!indio_dev) + return -ENOMEM; + + st = iio_priv(indio_dev); + + id = spi_get_device_id(spi); + st->chip_info = &ad7124_chip_info_tbl[id->driver_data]; + + ad_sd_init(&st->sd, indio_dev, spi, &ad7124_sigma_delta_info); + + spi_set_drvdata(spi, indio_dev); + + indio_dev->dev.parent = &spi->dev; + indio_dev->name = spi_get_device_id(spi)->name; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->info = &ad7124_info; + + ret = ad7124_of_parse_channel_config(indio_dev, spi->dev.of_node); + if (ret < 0) + return ret; + + for (i = 0; i < ARRAY_SIZE(st->vref); i++) { + if (i == AD7124_INT_REF) + continue; + + st->vref[i] = devm_regulator_get_optional(&spi->dev, + ad7124_ref_names[i]); + if (PTR_ERR(st->vref[i]) == -ENODEV) + continue; + else if (IS_ERR(st->vref[i])) + return PTR_ERR(st->vref[i]); + + ret = regulator_enable(st->vref[i]); + if (ret) + return ret; + } + + st->mclk = devm_clk_get(&spi->dev, "mclk"); + if (IS_ERR(st->mclk)) { + ret = PTR_ERR(st->mclk); + goto error_regulator_disable; + } + + ret = clk_prepare_enable(st->mclk); + if (ret < 0) + goto error_regulator_disable; + + ret = ad7124_soft_reset(st); + if (ret < 0) + goto error_clk_disable_unprepare; + + ret = ad7124_setup(st); + if (ret < 0) + goto error_clk_disable_unprepare; + + ret = ad_sd_setup_buffer_and_trigger(indio_dev); + if (ret < 0) + goto error_clk_disable_unprepare; + + ret = iio_device_register(indio_dev); + if (ret < 0) { + dev_err(&spi->dev, "Failed to register iio device\n"); + goto error_remove_trigger; + } + + return 0; + +error_remove_trigger: + ad_sd_cleanup_buffer_and_trigger(indio_dev); +error_clk_disable_unprepare: + clk_disable_unprepare(st->mclk); +error_regulator_disable: + for (i = ARRAY_SIZE(st->vref) - 1; i >= 0; i--) { + if (!IS_ERR_OR_NULL(st->vref[i])) + regulator_disable(st->vref[i]); + } + + return ret; +} + +static int ad7124_remove(struct spi_device *spi) +{ + struct iio_dev *indio_dev = spi_get_drvdata(spi); + struct ad7124_state *st = iio_priv(indio_dev); + int i; + + iio_device_unregister(indio_dev); + ad_sd_cleanup_buffer_and_trigger(indio_dev); + clk_disable_unprepare(st->mclk); + + for (i = ARRAY_SIZE(st->vref) - 1; i >= 0; i--) { + if (!IS_ERR_OR_NULL(st->vref[i])) + regulator_disable(st->vref[i]); + } + + return 0; +} + +static const struct spi_device_id ad7124_id_table[] = { + { "ad7124-4", ID_AD7124_4 }, + { "ad7124-8", ID_AD7124_8 }, + {} +}; +MODULE_DEVICE_TABLE(spi, ad7124_id_table); + +static const struct of_device_id ad7124_of_match[] = { + { .compatible = "adi,ad7124-4" }, + { .compatible = "adi,ad7124-8" }, + { }, +}; +MODULE_DEVICE_TABLE(of, ad7124_of_match); + +static struct spi_driver ad71124_driver = { + .driver = { + .name = "ad7124", + .of_match_table = ad7124_of_match, + }, + .probe = ad7124_probe, + .remove = ad7124_remove, + .id_table = ad7124_id_table, +}; +module_spi_driver(ad71124_driver); + +MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>"); +MODULE_DESCRIPTION("Analog Devices AD7124 SPI driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/iio/adc/ad7949.c b/drivers/iio/adc/ad7949.c @@ -0,0 +1,347 @@ +// SPDX-License-Identifier: GPL-2.0 +/* ad7949.c - Analog Devices ADC driver 14/16 bits 4/8 channels + * + * Copyright (C) 2018 CMC NV + * + * http://www.analog.com/media/en/technical-documentation/data-sheets/AD7949.pdf + */ + +#include <linux/delay.h> +#include <linux/iio/iio.h> +#include <linux/module.h> +#include <linux/regulator/consumer.h> +#include <linux/spi/spi.h> + +#define AD7949_MASK_CHANNEL_SEL GENMASK(9, 7) +#define AD7949_MASK_TOTAL GENMASK(13, 0) +#define AD7949_OFFSET_CHANNEL_SEL 7 +#define AD7949_CFG_READ_BACK 0x1 +#define AD7949_CFG_REG_SIZE_BITS 14 + +enum { + ID_AD7949 = 0, + ID_AD7682, + ID_AD7689, +}; + +struct ad7949_adc_spec { + u8 num_channels; + u8 resolution; +}; + +static const struct ad7949_adc_spec ad7949_adc_spec[] = { + [ID_AD7949] = { .num_channels = 8, .resolution = 14 }, + [ID_AD7682] = { .num_channels = 4, .resolution = 16 }, + [ID_AD7689] = { .num_channels = 8, .resolution = 16 }, +}; + +/** + * struct ad7949_adc_chip - AD ADC chip + * @lock: protects write sequences + * @vref: regulator generating Vref + * @iio_dev: reference to iio structure + * @spi: reference to spi structure + * @resolution: resolution of the chip + * @cfg: copy of the configuration register + * @current_channel: current channel in use + * @buffer: buffer to send / receive data to / from device + */ +struct ad7949_adc_chip { + struct mutex lock; + struct regulator *vref; + struct iio_dev *indio_dev; + struct spi_device *spi; + u8 resolution; + u16 cfg; + unsigned int current_channel; + u32 buffer ____cacheline_aligned; +}; + +static bool ad7949_spi_cfg_is_read_back(struct ad7949_adc_chip *ad7949_adc) +{ + if (!(ad7949_adc->cfg & AD7949_CFG_READ_BACK)) + return true; + + return false; +} + +static int ad7949_spi_bits_per_word(struct ad7949_adc_chip *ad7949_adc) +{ + int ret = ad7949_adc->resolution; + + if (ad7949_spi_cfg_is_read_back(ad7949_adc)) + ret += AD7949_CFG_REG_SIZE_BITS; + + return ret; +} + +static int ad7949_spi_write_cfg(struct ad7949_adc_chip *ad7949_adc, u16 val, + u16 mask) +{ + int ret; + int bits_per_word = ad7949_spi_bits_per_word(ad7949_adc); + int shift = bits_per_word - AD7949_CFG_REG_SIZE_BITS; + struct spi_message msg; + struct spi_transfer tx[] = { + { + .tx_buf = &ad7949_adc->buffer, + .len = 4, + .bits_per_word = bits_per_word, + }, + }; + + ad7949_adc->cfg = (val & mask) | (ad7949_adc->cfg & ~mask); + ad7949_adc->buffer = ad7949_adc->cfg << shift; + spi_message_init_with_transfers(&msg, tx, 1); + ret = spi_sync(ad7949_adc->spi, &msg); + + /* + * This delay is to avoid a new request before the required time to + * send a new command to the device + */ + udelay(2); + return ret; +} + +static int ad7949_spi_read_channel(struct ad7949_adc_chip *ad7949_adc, int *val, + unsigned int channel) +{ + int ret; + int bits_per_word = ad7949_spi_bits_per_word(ad7949_adc); + int mask = GENMASK(ad7949_adc->resolution, 0); + struct spi_message msg; + struct spi_transfer tx[] = { + { + .rx_buf = &ad7949_adc->buffer, + .len = 4, + .bits_per_word = bits_per_word, + }, + }; + + ret = ad7949_spi_write_cfg(ad7949_adc, + channel << AD7949_OFFSET_CHANNEL_SEL, + AD7949_MASK_CHANNEL_SEL); + if (ret) + return ret; + + ad7949_adc->buffer = 0; + spi_message_init_with_transfers(&msg, tx, 1); + ret = spi_sync(ad7949_adc->spi, &msg); + if (ret) + return ret; + + /* + * This delay is to avoid a new request before the required time to + * send a new command to the device + */ + udelay(2); + + ad7949_adc->current_channel = channel; + + if (ad7949_spi_cfg_is_read_back(ad7949_adc)) + *val = (ad7949_adc->buffer >> AD7949_CFG_REG_SIZE_BITS) & mask; + else + *val = ad7949_adc->buffer & mask; + + return 0; +} + +#define AD7949_ADC_CHANNEL(chan) { \ + .type = IIO_VOLTAGE, \ + .indexed = 1, \ + .channel = (chan), \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ +} + +static const struct iio_chan_spec ad7949_adc_channels[] = { + AD7949_ADC_CHANNEL(0), + AD7949_ADC_CHANNEL(1), + AD7949_ADC_CHANNEL(2), + AD7949_ADC_CHANNEL(3), + AD7949_ADC_CHANNEL(4), + AD7949_ADC_CHANNEL(5), + AD7949_ADC_CHANNEL(6), + AD7949_ADC_CHANNEL(7), +}; + +static int ad7949_spi_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct ad7949_adc_chip *ad7949_adc = iio_priv(indio_dev); + int ret; + + if (!val) + return -EINVAL; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + mutex_lock(&ad7949_adc->lock); + ret = ad7949_spi_read_channel(ad7949_adc, val, chan->channel); + mutex_unlock(&ad7949_adc->lock); + + if (ret < 0) + return ret; + + return IIO_VAL_INT; + + case IIO_CHAN_INFO_SCALE: + ret = regulator_get_voltage(ad7949_adc->vref); + if (ret < 0) + return ret; + + *val = ret / 5000; + return IIO_VAL_INT; + } + + return -EINVAL; +} + +static int ad7949_spi_reg_access(struct iio_dev *indio_dev, + unsigned int reg, unsigned int writeval, + unsigned int *readval) +{ + struct ad7949_adc_chip *ad7949_adc = iio_priv(indio_dev); + int ret = 0; + + if (readval) + *readval = ad7949_adc->cfg; + else + ret = ad7949_spi_write_cfg(ad7949_adc, + writeval & AD7949_MASK_TOTAL, AD7949_MASK_TOTAL); + + return ret; +} + +static const struct iio_info ad7949_spi_info = { + .read_raw = ad7949_spi_read_raw, + .debugfs_reg_access = ad7949_spi_reg_access, +}; + +static int ad7949_spi_init(struct ad7949_adc_chip *ad7949_adc) +{ + int ret; + int val; + + /* Sequencer disabled, CFG readback disabled, IN0 as default channel */ + ad7949_adc->current_channel = 0; + ret = ad7949_spi_write_cfg(ad7949_adc, 0x3C79, AD7949_MASK_TOTAL); + + /* + * Do two dummy conversions to apply the first configuration setting. + * Required only after the start up of the device. + */ + ad7949_spi_read_channel(ad7949_adc, &val, ad7949_adc->current_channel); + ad7949_spi_read_channel(ad7949_adc, &val, ad7949_adc->current_channel); + + return ret; +} + +static int ad7949_spi_probe(struct spi_device *spi) +{ + struct device *dev = &spi->dev; + const struct ad7949_adc_spec *spec; + struct ad7949_adc_chip *ad7949_adc; + struct iio_dev *indio_dev; + int ret; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*ad7949_adc)); + if (!indio_dev) { + dev_err(dev, "can not allocate iio device\n"); + return -ENOMEM; + } + + indio_dev->dev.parent = dev; + indio_dev->dev.of_node = dev->of_node; + indio_dev->info = &ad7949_spi_info; + indio_dev->name = spi_get_device_id(spi)->name; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = ad7949_adc_channels; + spi_set_drvdata(spi, indio_dev); + + ad7949_adc = iio_priv(indio_dev); + ad7949_adc->indio_dev = indio_dev; + ad7949_adc->spi = spi; + + spec = &ad7949_adc_spec[spi_get_device_id(spi)->driver_data]; + indio_dev->num_channels = spec->num_channels; + ad7949_adc->resolution = spec->resolution; + + ad7949_adc->vref = devm_regulator_get(dev, "vref"); + if (IS_ERR(ad7949_adc->vref)) { + dev_err(dev, "fail to request regulator\n"); + return PTR_ERR(ad7949_adc->vref); + } + + ret = regulator_enable(ad7949_adc->vref); + if (ret < 0) { + dev_err(dev, "fail to enable regulator\n"); + return ret; + } + + mutex_init(&ad7949_adc->lock); + + ret = ad7949_spi_init(ad7949_adc); + if (ret) { + dev_err(dev, "enable to init this device: %d\n", ret); + goto err; + } + + ret = iio_device_register(indio_dev); + if (ret) { + dev_err(dev, "fail to register iio device: %d\n", ret); + goto err; + } + + return 0; + +err: + mutex_destroy(&ad7949_adc->lock); + regulator_disable(ad7949_adc->vref); + + return ret; +} + +static int ad7949_spi_remove(struct spi_device *spi) +{ + struct iio_dev *indio_dev = spi_get_drvdata(spi); + struct ad7949_adc_chip *ad7949_adc = iio_priv(indio_dev); + + iio_device_unregister(indio_dev); + mutex_destroy(&ad7949_adc->lock); + regulator_disable(ad7949_adc->vref); + + return 0; +} + +static const struct of_device_id ad7949_spi_of_id[] = { + { .compatible = "adi,ad7949" }, + { .compatible = "adi,ad7682" }, + { .compatible = "adi,ad7689" }, + { } +}; +MODULE_DEVICE_TABLE(of, ad7949_spi_of_id); + +static const struct spi_device_id ad7949_spi_id[] = { + { "ad7949", ID_AD7949 }, + { "ad7682", ID_AD7682 }, + { "ad7689", ID_AD7689 }, + { } +}; +MODULE_DEVICE_TABLE(spi, ad7949_spi_id); + +static struct spi_driver ad7949_spi_driver = { + .driver = { + .name = "ad7949", + .of_match_table = ad7949_spi_of_id, + }, + .probe = ad7949_spi_probe, + .remove = ad7949_spi_remove, + .id_table = ad7949_spi_id, +}; +module_spi_driver(ad7949_spi_driver); + +MODULE_AUTHOR("Charles-Antoine Couret <charles-antoine.couret@essensium.com>"); +MODULE_DESCRIPTION("Analog Devices 14/16-bit 8-channel ADC driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c @@ -278,6 +278,7 @@ int ad_sigma_delta_single_conversion(struct iio_dev *indio_dev, { struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev); unsigned int sample, raw_sample; + unsigned int data_reg; int ret = 0; if (iio_buffer_enabled(indio_dev)) @@ -305,7 +306,12 @@ int ad_sigma_delta_single_conversion(struct iio_dev *indio_dev, if (ret < 0) goto out; - ret = ad_sd_read_reg(sigma_delta, AD_SD_REG_DATA, + if (sigma_delta->info->data_reg != 0) + data_reg = sigma_delta->info->data_reg; + else + data_reg = AD_SD_REG_DATA; + + ret = ad_sd_read_reg(sigma_delta, data_reg, DIV_ROUND_UP(chan->scan_type.realbits + chan->scan_type.shift, 8), &raw_sample); @@ -392,6 +398,7 @@ static irqreturn_t ad_sd_trigger_handler(int irq, void *p) struct iio_dev *indio_dev = pf->indio_dev; struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev); unsigned int reg_size; + unsigned int data_reg; uint8_t data[16]; int ret; @@ -401,18 +408,23 @@ static irqreturn_t ad_sd_trigger_handler(int irq, void *p) indio_dev->channels[0].scan_type.shift; reg_size = DIV_ROUND_UP(reg_size, 8); + if (sigma_delta->info->data_reg != 0) + data_reg = sigma_delta->info->data_reg; + else + data_reg = AD_SD_REG_DATA; + switch (reg_size) { case 4: case 2: case 1: - ret = ad_sd_read_reg_raw(sigma_delta, AD_SD_REG_DATA, - reg_size, &data[0]); + ret = ad_sd_read_reg_raw(sigma_delta, data_reg, reg_size, + &data[0]); break; case 3: /* We store 24 bit samples in a 32 bit word. Keep the upper * byte set to zero. */ - ret = ad_sd_read_reg_raw(sigma_delta, AD_SD_REG_DATA, - reg_size, &data[1]); + ret = ad_sd_read_reg_raw(sigma_delta, data_reg, reg_size, + &data[1]); break; } diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c @@ -115,6 +115,7 @@ #define MAX_ADC_V2_CHANNELS 10 #define MAX_ADC_V1_CHANNELS 8 #define MAX_EXYNOS3250_ADC_CHANNELS 2 +#define MAX_S5PV210_ADC_CHANNELS 10 /* Bit definitions common for ADC_V1 and ADC_V2 */ #define ADC_CON_EN_START (1u << 0) @@ -282,6 +283,16 @@ static const struct exynos_adc_data exynos_adc_v1_data = { .start_conv = exynos_adc_v1_start_conv, }; +static const struct exynos_adc_data exynos_adc_s5pv210_data = { + .num_channels = MAX_S5PV210_ADC_CHANNELS, + .mask = ADC_DATX_MASK, /* 12 bit ADC resolution */ + + .init_hw = exynos_adc_v1_init_hw, + .exit_hw = exynos_adc_v1_exit_hw, + .clear_irq = exynos_adc_v1_clear_irq, + .start_conv = exynos_adc_v1_start_conv, +}; + static void exynos_adc_s3c2416_start_conv(struct exynos_adc *info, unsigned long addr) { @@ -479,6 +490,9 @@ static const struct of_device_id exynos_adc_match[] = { .compatible = "samsung,s3c6410-adc", .data = &exynos_adc_s3c64xx_data, }, { + .compatible = "samsung,s5pv210-adc", + .data = &exynos_adc_s5pv210_data, + }, { .compatible = "samsung,exynos-adc-v1", .data = &exynos_adc_v1_data, }, { diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c @@ -250,6 +250,7 @@ static int ina2xx_read_raw(struct iio_dev *indio_dev, *val2 = chip->shunt_resistor_uohm; return IIO_VAL_FRACTIONAL; } + return -EINVAL; case IIO_CHAN_INFO_HARDWAREGAIN: switch (chan->address) { @@ -262,6 +263,7 @@ static int ina2xx_read_raw(struct iio_dev *indio_dev, *val = chip->range_vbus == 32 ? 1 : 2; return IIO_VAL_INT; } + return -EINVAL; } return -EINVAL; diff --git a/drivers/iio/adc/max11100.c b/drivers/iio/adc/max11100.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0 /* * iio/adc/max11100.c * Maxim max11100 ADC Driver with IIO interface * * Copyright (C) 2016-17 Renesas Electronics Corporation * Copyright (C) 2016-17 Jacopo Mondi - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/delay.h> #include <linux/kernel.h> diff --git a/drivers/iio/adc/max9611.c b/drivers/iio/adc/max9611.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * iio/adc/max9611.c * @@ -5,10 +6,6 @@ * 12-bit ADC interface. * * Copyright (C) 2017 Jacopo Mondi - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ /* diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c @@ -18,6 +18,7 @@ #include <linux/io.h> #include <linux/iio/iio.h> #include <linux/module.h> +#include <linux/nvmem-consumer.h> #include <linux/interrupt.h> #include <linux/of.h> #include <linux/of_irq.h> @@ -165,6 +166,14 @@ #define MESON_SAR_ADC_MAX_FIFO_SIZE 32 #define MESON_SAR_ADC_TIMEOUT 100 /* ms */ +#define MESON_SAR_ADC_VOLTAGE_AND_TEMP_CHANNEL 6 +#define MESON_SAR_ADC_TEMP_OFFSET 27 + +/* temperature sensor calibration information in eFuse */ +#define MESON_SAR_ADC_EFUSE_BYTES 4 +#define MESON_SAR_ADC_EFUSE_BYTE3_UPPER_ADC_VAL GENMASK(6, 0) +#define MESON_SAR_ADC_EFUSE_BYTE3_IS_CALIBRATED BIT(7) + /* for use with IIO_VAL_INT_PLUS_MICRO */ #define MILLION 1000000 @@ -175,16 +184,25 @@ .address = _chan, \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ BIT(IIO_CHAN_INFO_AVERAGE_RAW), \ - .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ - BIT(IIO_CHAN_INFO_CALIBBIAS) | \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_CALIBBIAS) | \ BIT(IIO_CHAN_INFO_CALIBSCALE), \ .datasheet_name = "SAR_ADC_CH"#_chan, \ } -/* - * TODO: the hardware supports IIO_TEMP for channel 6 as well which is - * currently not supported by this driver. - */ +#define MESON_SAR_ADC_TEMP_CHAN(_chan) { \ + .type = IIO_TEMP, \ + .channel = _chan, \ + .address = MESON_SAR_ADC_VOLTAGE_AND_TEMP_CHANNEL, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_AVERAGE_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | \ + BIT(IIO_CHAN_INFO_SCALE), \ + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_CALIBBIAS) | \ + BIT(IIO_CHAN_INFO_CALIBSCALE), \ + .datasheet_name = "TEMP_SENSOR", \ +} + static const struct iio_chan_spec meson_sar_adc_iio_channels[] = { MESON_SAR_ADC_CHAN(0), MESON_SAR_ADC_CHAN(1), @@ -197,6 +215,19 @@ static const struct iio_chan_spec meson_sar_adc_iio_channels[] = { IIO_CHAN_SOFT_TIMESTAMP(8), }; +static const struct iio_chan_spec meson_sar_adc_and_temp_iio_channels[] = { + MESON_SAR_ADC_CHAN(0), + MESON_SAR_ADC_CHAN(1), + MESON_SAR_ADC_CHAN(2), + MESON_SAR_ADC_CHAN(3), + MESON_SAR_ADC_CHAN(4), + MESON_SAR_ADC_CHAN(5), + MESON_SAR_ADC_CHAN(6), + MESON_SAR_ADC_CHAN(7), + MESON_SAR_ADC_TEMP_CHAN(8), + IIO_CHAN_SOFT_TIMESTAMP(9), +}; + enum meson_sar_adc_avg_mode { NO_AVERAGING = 0x0, MEAN_AVERAGING = 0x1, @@ -225,6 +256,9 @@ struct meson_sar_adc_param { u32 bandgap_reg; unsigned int resolution; const struct regmap_config *regmap_config; + u8 temperature_trimming_bits; + unsigned int temperature_multiplier; + unsigned int temperature_divider; }; struct meson_sar_adc_data { @@ -246,6 +280,9 @@ struct meson_sar_adc_priv { struct completion done; int calibbias; int calibscale; + bool temperature_sensor_calibrated; + u8 temperature_sensor_coefficient; + u16 temperature_sensor_adc_val; }; static const struct regmap_config meson_sar_adc_regmap_config_gxbb = { @@ -389,9 +426,16 @@ static void meson_sar_adc_enable_channel(struct iio_dev *indio_dev, MESON_SAR_ADC_DETECT_IDLE_SW_IDLE_MUX_SEL_MASK, regval); - if (chan->address == 6) - regmap_update_bits(priv->regmap, MESON_SAR_ADC_DELTA_10, - MESON_SAR_ADC_DELTA_10_TEMP_SEL, 0); + if (chan->address == MESON_SAR_ADC_VOLTAGE_AND_TEMP_CHANNEL) { + if (chan->type == IIO_TEMP) + regval = MESON_SAR_ADC_DELTA_10_TEMP_SEL; + else + regval = 0; + + regmap_update_bits(priv->regmap, + MESON_SAR_ADC_DELTA_10, + MESON_SAR_ADC_DELTA_10_TEMP_SEL, regval); + } } static void meson_sar_adc_set_chan7_mux(struct iio_dev *indio_dev, @@ -506,8 +550,12 @@ static int meson_sar_adc_get_sample(struct iio_dev *indio_dev, enum meson_sar_adc_num_samples avg_samples, int *val) { + struct meson_sar_adc_priv *priv = iio_priv(indio_dev); int ret; + if (chan->type == IIO_TEMP && !priv->temperature_sensor_calibrated) + return -ENOTSUPP; + ret = meson_sar_adc_lock(indio_dev); if (ret) return ret; @@ -555,17 +603,31 @@ static int meson_sar_adc_iio_info_read_raw(struct iio_dev *indio_dev, break; case IIO_CHAN_INFO_SCALE: - ret = regulator_get_voltage(priv->vref); - if (ret < 0) { - dev_err(indio_dev->dev.parent, - "failed to get vref voltage: %d\n", ret); - return ret; + if (chan->type == IIO_VOLTAGE) { + ret = regulator_get_voltage(priv->vref); + if (ret < 0) { + dev_err(indio_dev->dev.parent, + "failed to get vref voltage: %d\n", + ret); + return ret; + } + + *val = ret / 1000; + *val2 = priv->param->resolution; + return IIO_VAL_FRACTIONAL_LOG2; + } else if (chan->type == IIO_TEMP) { + /* SoC specific multiplier and divider */ + *val = priv->param->temperature_multiplier; + *val2 = priv->param->temperature_divider; + + /* celsius to millicelsius */ + *val *= 1000; + + return IIO_VAL_FRACTIONAL; + } else { + return -EINVAL; } - *val = ret / 1000; - *val2 = priv->param->resolution; - return IIO_VAL_FRACTIONAL_LOG2; - case IIO_CHAN_INFO_CALIBBIAS: *val = priv->calibbias; return IIO_VAL_INT; @@ -575,6 +637,13 @@ static int meson_sar_adc_iio_info_read_raw(struct iio_dev *indio_dev, *val2 = priv->calibscale % MILLION; return IIO_VAL_INT_PLUS_MICRO; + case IIO_CHAN_INFO_OFFSET: + *val = DIV_ROUND_CLOSEST(MESON_SAR_ADC_TEMP_OFFSET * + priv->param->temperature_divider, + priv->param->temperature_multiplier); + *val -= priv->temperature_sensor_adc_val; + return IIO_VAL_INT; + default: return -EINVAL; } @@ -587,8 +656,11 @@ static int meson_sar_adc_clk_init(struct iio_dev *indio_dev, struct clk_init_data init; const char *clk_parents[1]; - init.name = devm_kasprintf(&indio_dev->dev, GFP_KERNEL, "%pOF#adc_div", - indio_dev->dev.of_node); + init.name = devm_kasprintf(&indio_dev->dev, GFP_KERNEL, "%s#adc_div", + dev_name(indio_dev->dev.parent)); + if (!init.name) + return -ENOMEM; + init.flags = 0; init.ops = &clk_divider_ops; clk_parents[0] = __clk_get_name(priv->clkin); @@ -606,8 +678,11 @@ static int meson_sar_adc_clk_init(struct iio_dev *indio_dev, if (WARN_ON(IS_ERR(priv->adc_div_clk))) return PTR_ERR(priv->adc_div_clk); - init.name = devm_kasprintf(&indio_dev->dev, GFP_KERNEL, "%pOF#adc_en", - indio_dev->dev.of_node); + init.name = devm_kasprintf(&indio_dev->dev, GFP_KERNEL, "%s#adc_en", + dev_name(indio_dev->dev.parent)); + if (!init.name) + return -ENOMEM; + init.flags = CLK_SET_RATE_PARENT; init.ops = &clk_gate_ops; clk_parents[0] = __clk_get_name(priv->adc_div_clk); @@ -625,6 +700,65 @@ static int meson_sar_adc_clk_init(struct iio_dev *indio_dev, return 0; } +static int meson_sar_adc_temp_sensor_init(struct iio_dev *indio_dev) +{ + struct meson_sar_adc_priv *priv = iio_priv(indio_dev); + u8 *buf, trimming_bits, trimming_mask, upper_adc_val; + struct nvmem_cell *temperature_calib; + size_t read_len; + int ret; + + temperature_calib = devm_nvmem_cell_get(&indio_dev->dev, + "temperature_calib"); + if (IS_ERR(temperature_calib)) { + ret = PTR_ERR(temperature_calib); + + /* + * leave the temperature sensor disabled if no calibration data + * was passed via nvmem-cells. + */ + if (ret == -ENODEV) + return 0; + + if (ret != -EPROBE_DEFER) + dev_err(indio_dev->dev.parent, + "failed to get temperature_calib cell\n"); + + return ret; + } + + read_len = MESON_SAR_ADC_EFUSE_BYTES; + buf = nvmem_cell_read(temperature_calib, &read_len); + if (IS_ERR(buf)) { + dev_err(indio_dev->dev.parent, + "failed to read temperature_calib cell\n"); + return PTR_ERR(buf); + } else if (read_len != MESON_SAR_ADC_EFUSE_BYTES) { + kfree(buf); + dev_err(indio_dev->dev.parent, + "invalid read size of temperature_calib cell\n"); + return -EINVAL; + } + + trimming_bits = priv->param->temperature_trimming_bits; + trimming_mask = BIT(trimming_bits) - 1; + + priv->temperature_sensor_calibrated = + buf[3] & MESON_SAR_ADC_EFUSE_BYTE3_IS_CALIBRATED; + priv->temperature_sensor_coefficient = buf[2] & trimming_mask; + + upper_adc_val = FIELD_GET(MESON_SAR_ADC_EFUSE_BYTE3_UPPER_ADC_VAL, + buf[3]); + + priv->temperature_sensor_adc_val = buf[2]; + priv->temperature_sensor_adc_val |= upper_adc_val << BITS_PER_BYTE; + priv->temperature_sensor_adc_val >>= trimming_bits; + + kfree(buf); + + return 0; +} + static int meson_sar_adc_init(struct iio_dev *indio_dev) { struct meson_sar_adc_priv *priv = iio_priv(indio_dev); @@ -649,10 +783,12 @@ static int meson_sar_adc_init(struct iio_dev *indio_dev) meson_sar_adc_stop_sample_engine(indio_dev); - /* update the channel 6 MUX to select the temperature sensor */ + /* + * disable this bit as seems to be only relevant for Meson6 (based + * on the vendor driver), which we don't support at the moment. + */ regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG0, - MESON_SAR_ADC_REG0_ADC_TEMP_SEN_SEL, - MESON_SAR_ADC_REG0_ADC_TEMP_SEN_SEL); + MESON_SAR_ADC_REG0_ADC_TEMP_SEN_SEL, 0); /* disable all channels by default */ regmap_write(priv->regmap, MESON_SAR_ADC_CHAN_LIST, 0x0); @@ -709,6 +845,29 @@ static int meson_sar_adc_init(struct iio_dev *indio_dev) regval |= MESON_SAR_ADC_AUX_SW_XP_DRIVE_SW; regmap_write(priv->regmap, MESON_SAR_ADC_AUX_SW, regval); + if (priv->temperature_sensor_calibrated) { + regmap_update_bits(priv->regmap, MESON_SAR_ADC_DELTA_10, + MESON_SAR_ADC_DELTA_10_TS_REVE1, + MESON_SAR_ADC_DELTA_10_TS_REVE1); + regmap_update_bits(priv->regmap, MESON_SAR_ADC_DELTA_10, + MESON_SAR_ADC_DELTA_10_TS_REVE0, + MESON_SAR_ADC_DELTA_10_TS_REVE0); + + /* + * set bits [3:0] of the TSC (temperature sensor coefficient) + * to get the correct values when reading the temperature. + */ + regval = FIELD_PREP(MESON_SAR_ADC_DELTA_10_TS_C_MASK, + priv->temperature_sensor_coefficient); + regmap_update_bits(priv->regmap, MESON_SAR_ADC_DELTA_10, + MESON_SAR_ADC_DELTA_10_TS_C_MASK, regval); + } else { + regmap_update_bits(priv->regmap, MESON_SAR_ADC_DELTA_10, + MESON_SAR_ADC_DELTA_10_TS_REVE1, 0); + regmap_update_bits(priv->regmap, MESON_SAR_ADC_DELTA_10, + MESON_SAR_ADC_DELTA_10_TS_REVE0, 0); + } + ret = clk_set_parent(priv->adc_sel_clk, priv->clkin); if (ret) { dev_err(indio_dev->dev.parent, @@ -894,6 +1053,17 @@ static const struct meson_sar_adc_param meson_sar_adc_meson8_param = { .bandgap_reg = MESON_SAR_ADC_DELTA_10, .regmap_config = &meson_sar_adc_regmap_config_meson8, .resolution = 10, + .temperature_trimming_bits = 4, + .temperature_multiplier = 18 * 10000, + .temperature_divider = 1024 * 10 * 85, +}; + +static const struct meson_sar_adc_param meson_sar_adc_meson8b_param = { + .has_bl30_integration = false, + .clock_rate = 1150000, + .bandgap_reg = MESON_SAR_ADC_DELTA_10, + .regmap_config = &meson_sar_adc_regmap_config_meson8, + .resolution = 10, }; static const struct meson_sar_adc_param meson_sar_adc_gxbb_param = { @@ -918,12 +1088,12 @@ static const struct meson_sar_adc_data meson_sar_adc_meson8_data = { }; static const struct meson_sar_adc_data meson_sar_adc_meson8b_data = { - .param = &meson_sar_adc_meson8_param, + .param = &meson_sar_adc_meson8b_param, .name = "meson-meson8b-saradc", }; static const struct meson_sar_adc_data meson_sar_adc_meson8m2_data = { - .param = &meson_sar_adc_meson8_param, + .param = &meson_sar_adc_meson8b_param, .name = "meson-meson8m2-saradc", }; @@ -1009,9 +1179,6 @@ static int meson_sar_adc_probe(struct platform_device *pdev) indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &meson_sar_adc_iio_info; - indio_dev->channels = meson_sar_adc_iio_channels; - indio_dev->num_channels = ARRAY_SIZE(meson_sar_adc_iio_channels); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(base)) @@ -1078,6 +1245,22 @@ static int meson_sar_adc_probe(struct platform_device *pdev) priv->calibscale = MILLION; + if (priv->param->temperature_trimming_bits) { + ret = meson_sar_adc_temp_sensor_init(indio_dev); + if (ret) + return ret; + } + + if (priv->temperature_sensor_calibrated) { + indio_dev->channels = meson_sar_adc_and_temp_iio_channels; + indio_dev->num_channels = + ARRAY_SIZE(meson_sar_adc_and_temp_iio_channels); + } else { + indio_dev->channels = meson_sar_adc_iio_channels; + indio_dev->num_channels = + ARRAY_SIZE(meson_sar_adc_iio_channels); + } + ret = meson_sar_adc_init(indio_dev); if (ret) goto err; diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c @@ -423,6 +423,7 @@ struct adc5_channels { enum vadc_scale_fn_type scale_fn_type; }; +/* In these definitions, _pre refers to an index into adc5_prescale_ratios. */ #define ADC5_CHAN(_dname, _type, _mask, _pre, _scale) \ { \ .datasheet_name = _dname, \ @@ -443,63 +444,63 @@ struct adc5_channels { _pre, _scale) \ static const struct adc5_channels adc5_chans_pmic[ADC5_MAX_CHANNEL] = { - [ADC5_REF_GND] = ADC5_CHAN_VOLT("ref_gnd", 1, + [ADC5_REF_GND] = ADC5_CHAN_VOLT("ref_gnd", 0, SCALE_HW_CALIB_DEFAULT) - [ADC5_1P25VREF] = ADC5_CHAN_VOLT("vref_1p25", 1, + [ADC5_1P25VREF] = ADC5_CHAN_VOLT("vref_1p25", 0, SCALE_HW_CALIB_DEFAULT) - [ADC5_VPH_PWR] = ADC5_CHAN_VOLT("vph_pwr", 3, + [ADC5_VPH_PWR] = ADC5_CHAN_VOLT("vph_pwr", 1, SCALE_HW_CALIB_DEFAULT) - [ADC5_VBAT_SNS] = ADC5_CHAN_VOLT("vbat_sns", 3, + [ADC5_VBAT_SNS] = ADC5_CHAN_VOLT("vbat_sns", 1, SCALE_HW_CALIB_DEFAULT) - [ADC5_DIE_TEMP] = ADC5_CHAN_TEMP("die_temp", 1, + [ADC5_DIE_TEMP] = ADC5_CHAN_TEMP("die_temp", 0, SCALE_HW_CALIB_PMIC_THERM) - [ADC5_USB_IN_I] = ADC5_CHAN_VOLT("usb_in_i_uv", 1, + [ADC5_USB_IN_I] = ADC5_CHAN_VOLT("usb_in_i_uv", 0, SCALE_HW_CALIB_DEFAULT) - [ADC5_USB_IN_V_16] = ADC5_CHAN_VOLT("usb_in_v_div_16", 16, + [ADC5_USB_IN_V_16] = ADC5_CHAN_VOLT("usb_in_v_div_16", 8, SCALE_HW_CALIB_DEFAULT) - [ADC5_CHG_TEMP] = ADC5_CHAN_TEMP("chg_temp", 1, + [ADC5_CHG_TEMP] = ADC5_CHAN_TEMP("chg_temp", 0, SCALE_HW_CALIB_PM5_CHG_TEMP) /* Charger prescales SBUx and MID_CHG to fit within 1.8V upper unit */ - [ADC5_SBUx] = ADC5_CHAN_VOLT("chg_sbux", 3, + [ADC5_SBUx] = ADC5_CHAN_VOLT("chg_sbux", 1, SCALE_HW_CALIB_DEFAULT) - [ADC5_MID_CHG_DIV6] = ADC5_CHAN_VOLT("chg_mid_chg", 6, + [ADC5_MID_CHG_DIV6] = ADC5_CHAN_VOLT("chg_mid_chg", 3, SCALE_HW_CALIB_DEFAULT) - [ADC5_XO_THERM_100K_PU] = ADC5_CHAN_TEMP("xo_therm", 1, + [ADC5_XO_THERM_100K_PU] = ADC5_CHAN_TEMP("xo_therm", 0, SCALE_HW_CALIB_XOTHERM) - [ADC5_AMUX_THM1_100K_PU] = ADC5_CHAN_TEMP("amux_thm1_100k_pu", 1, + [ADC5_AMUX_THM1_100K_PU] = ADC5_CHAN_TEMP("amux_thm1_100k_pu", 0, SCALE_HW_CALIB_THERM_100K_PULLUP) - [ADC5_AMUX_THM2_100K_PU] = ADC5_CHAN_TEMP("amux_thm2_100k_pu", 1, + [ADC5_AMUX_THM2_100K_PU] = ADC5_CHAN_TEMP("amux_thm2_100k_pu", 0, SCALE_HW_CALIB_THERM_100K_PULLUP) - [ADC5_AMUX_THM3_100K_PU] = ADC5_CHAN_TEMP("amux_thm3_100k_pu", 1, + [ADC5_AMUX_THM3_100K_PU] = ADC5_CHAN_TEMP("amux_thm3_100k_pu", 0, SCALE_HW_CALIB_THERM_100K_PULLUP) - [ADC5_AMUX_THM2] = ADC5_CHAN_TEMP("amux_thm2", 1, + [ADC5_AMUX_THM2] = ADC5_CHAN_TEMP("amux_thm2", 0, SCALE_HW_CALIB_PM5_SMB_TEMP) }; static const struct adc5_channels adc5_chans_rev2[ADC5_MAX_CHANNEL] = { - [ADC5_REF_GND] = ADC5_CHAN_VOLT("ref_gnd", 1, + [ADC5_REF_GND] = ADC5_CHAN_VOLT("ref_gnd", 0, SCALE_HW_CALIB_DEFAULT) - [ADC5_1P25VREF] = ADC5_CHAN_VOLT("vref_1p25", 1, + [ADC5_1P25VREF] = ADC5_CHAN_VOLT("vref_1p25", 0, SCALE_HW_CALIB_DEFAULT) - [ADC5_VPH_PWR] = ADC5_CHAN_VOLT("vph_pwr", 3, + [ADC5_VPH_PWR] = ADC5_CHAN_VOLT("vph_pwr", 1, SCALE_HW_CALIB_DEFAULT) - [ADC5_VBAT_SNS] = ADC5_CHAN_VOLT("vbat_sns", 3, + [ADC5_VBAT_SNS] = ADC5_CHAN_VOLT("vbat_sns", 1, SCALE_HW_CALIB_DEFAULT) - [ADC5_VCOIN] = ADC5_CHAN_VOLT("vcoin", 3, + [ADC5_VCOIN] = ADC5_CHAN_VOLT("vcoin", 1, SCALE_HW_CALIB_DEFAULT) - [ADC5_DIE_TEMP] = ADC5_CHAN_TEMP("die_temp", 1, + [ADC5_DIE_TEMP] = ADC5_CHAN_TEMP("die_temp", 0, SCALE_HW_CALIB_PMIC_THERM) - [ADC5_AMUX_THM1_100K_PU] = ADC5_CHAN_TEMP("amux_thm1_100k_pu", 1, + [ADC5_AMUX_THM1_100K_PU] = ADC5_CHAN_TEMP("amux_thm1_100k_pu", 0, SCALE_HW_CALIB_THERM_100K_PULLUP) - [ADC5_AMUX_THM2_100K_PU] = ADC5_CHAN_TEMP("amux_thm2_100k_pu", 1, + [ADC5_AMUX_THM2_100K_PU] = ADC5_CHAN_TEMP("amux_thm2_100k_pu", 0, SCALE_HW_CALIB_THERM_100K_PULLUP) - [ADC5_AMUX_THM3_100K_PU] = ADC5_CHAN_TEMP("amux_thm3_100k_pu", 1, + [ADC5_AMUX_THM3_100K_PU] = ADC5_CHAN_TEMP("amux_thm3_100k_pu", 0, SCALE_HW_CALIB_THERM_100K_PULLUP) - [ADC5_AMUX_THM4_100K_PU] = ADC5_CHAN_TEMP("amux_thm4_100k_pu", 1, + [ADC5_AMUX_THM4_100K_PU] = ADC5_CHAN_TEMP("amux_thm4_100k_pu", 0, SCALE_HW_CALIB_THERM_100K_PULLUP) - [ADC5_AMUX_THM5_100K_PU] = ADC5_CHAN_TEMP("amux_thm5_100k_pu", 1, + [ADC5_AMUX_THM5_100K_PU] = ADC5_CHAN_TEMP("amux_thm5_100k_pu", 0, SCALE_HW_CALIB_THERM_100K_PULLUP) - [ADC5_XO_THERM_100K_PU] = ADC5_CHAN_TEMP("xo_therm_100k_pu", 1, + [ADC5_XO_THERM_100K_PU] = ADC5_CHAN_TEMP("xo_therm_100k_pu", 0, SCALE_HW_CALIB_THERM_100K_PULLUP) }; @@ -558,6 +559,9 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc, return ret; } prop->prescale = ret; + } else { + prop->prescale = + adc->data->adc_chans[prop->channel].prescale_index; } ret = of_property_read_u32(node, "qcom,hw-settle-time", &value); diff --git a/drivers/iio/adc/rcar-gyroadc.c b/drivers/iio/adc/rcar-gyroadc.c @@ -1,17 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Renesas R-Car GyroADC driver * * Copyright 2016 Marek Vasut <marek.vasut@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/module.h> diff --git a/drivers/iio/adc/sc27xx_adc.c b/drivers/iio/adc/sc27xx_adc.c @@ -52,6 +52,9 @@ /* Timeout (ms) for the trylock of hardware spinlocks */ #define SC27XX_ADC_HWLOCK_TIMEOUT 5000 +/* Timeout (ms) for ADC data conversion according to ADC datasheet */ +#define SC27XX_ADC_RDY_TIMEOUT 100 + /* Maximum ADC channel number */ #define SC27XX_ADC_CHANNEL_MAX 32 @@ -223,7 +226,14 @@ static int sc27xx_adc_read(struct sc27xx_adc_data *data, int channel, if (ret) goto disable_adc; - wait_for_completion(&data->completion); + ret = wait_for_completion_timeout(&data->completion, + msecs_to_jiffies(SC27XX_ADC_RDY_TIMEOUT)); + if (!ret) { + dev_err(data->dev, "read ADC data timeout\n"); + ret = -ETIMEDOUT; + } else { + ret = 0; + } disable_adc: regmap_update_bits(data->regmap, data->base + SC27XX_ADC_CTL, diff --git a/drivers/iio/adc/stm32-adc-core.c b/drivers/iio/adc/stm32-adc-core.c @@ -16,6 +16,7 @@ #include <linux/irqdomain.h> #include <linux/module.h> #include <linux/of_device.h> +#include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> @@ -48,15 +49,19 @@ #define STM32H7_CKMODE_SHIFT 16 #define STM32H7_CKMODE_MASK GENMASK(17, 16) +#define STM32_ADC_CORE_SLEEP_DELAY_MS 2000 + /** * stm32_adc_common_regs - stm32 common registers, compatible dependent data * @csr: common status register offset + * @ccr: common control register offset * @eoc1: adc1 end of conversion flag in @csr * @eoc2: adc2 end of conversion flag in @csr * @eoc3: adc3 end of conversion flag in @csr */ struct stm32_adc_common_regs { u32 csr; + u32 ccr; u32 eoc1_msk; u32 eoc2_msk; u32 eoc3_msk; @@ -85,6 +90,7 @@ struct stm32_adc_priv_cfg { * @vref: regulator reference * @cfg: compatible configuration data * @common: common data for all ADC instances + * @ccr_bak: backup CCR in low power mode */ struct stm32_adc_priv { int irq[STM32_ADC_MAX_ADCS]; @@ -94,6 +100,7 @@ struct stm32_adc_priv { struct regulator *vref; const struct stm32_adc_priv_cfg *cfg; struct stm32_adc_common common; + u32 ccr_bak; }; static struct stm32_adc_priv *to_stm32_adc_priv(struct stm32_adc_common *com) @@ -265,6 +272,7 @@ out: /* STM32F4 common registers definitions */ static const struct stm32_adc_common_regs stm32f4_adc_common_regs = { .csr = STM32F4_ADC_CSR, + .ccr = STM32F4_ADC_CCR, .eoc1_msk = STM32F4_EOC1, .eoc2_msk = STM32F4_EOC2, .eoc3_msk = STM32F4_EOC3, @@ -273,6 +281,7 @@ static const struct stm32_adc_common_regs stm32f4_adc_common_regs = { /* STM32H7 common registers definitions */ static const struct stm32_adc_common_regs stm32h7_adc_common_regs = { .csr = STM32H7_ADC_CSR, + .ccr = STM32H7_ADC_CCR, .eoc1_msk = STM32H7_EOC_MST, .eoc2_msk = STM32H7_EOC_SLV, }; @@ -379,6 +388,61 @@ static void stm32_adc_irq_remove(struct platform_device *pdev, } } +static int stm32_adc_core_hw_start(struct device *dev) +{ + struct stm32_adc_common *common = dev_get_drvdata(dev); + struct stm32_adc_priv *priv = to_stm32_adc_priv(common); + int ret; + + ret = regulator_enable(priv->vref); + if (ret < 0) { + dev_err(dev, "vref enable failed\n"); + return ret; + } + + if (priv->bclk) { + ret = clk_prepare_enable(priv->bclk); + if (ret < 0) { + dev_err(dev, "bus clk enable failed\n"); + goto err_regulator_disable; + } + } + + if (priv->aclk) { + ret = clk_prepare_enable(priv->aclk); + if (ret < 0) { + dev_err(dev, "adc clk enable failed\n"); + goto err_bclk_disable; + } + } + + writel_relaxed(priv->ccr_bak, priv->common.base + priv->cfg->regs->ccr); + + return 0; + +err_bclk_disable: + if (priv->bclk) + clk_disable_unprepare(priv->bclk); +err_regulator_disable: + regulator_disable(priv->vref); + + return ret; +} + +static void stm32_adc_core_hw_stop(struct device *dev) +{ + struct stm32_adc_common *common = dev_get_drvdata(dev); + struct stm32_adc_priv *priv = to_stm32_adc_priv(common); + + /* Backup CCR that may be lost (depends on power state to achieve) */ + priv->ccr_bak = readl_relaxed(priv->common.base + priv->cfg->regs->ccr); + if (priv->aclk) + clk_disable_unprepare(priv->aclk); + if (priv->bclk) + clk_disable_unprepare(priv->bclk); + regulator_disable(priv->vref); +} + static int stm32_adc_probe(struct platform_device *pdev) { struct stm32_adc_priv *priv; @@ -393,6 +457,7 @@ static int stm32_adc_probe(struct platform_device *pdev) priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; + platform_set_drvdata(pdev, &priv->common); priv->cfg = (const struct stm32_adc_priv_cfg *) of_match_device(dev->driver->of_match_table, dev)->data; @@ -410,67 +475,51 @@ static int stm32_adc_probe(struct platform_device *pdev) return ret; } - ret = regulator_enable(priv->vref); - if (ret < 0) { - dev_err(&pdev->dev, "vref enable failed\n"); - return ret; - } - - ret = regulator_get_voltage(priv->vref); - if (ret < 0) { - dev_err(&pdev->dev, "vref get voltage failed, %d\n", ret); - goto err_regulator_disable; - } - priv->common.vref_mv = ret / 1000; - dev_dbg(&pdev->dev, "vref+=%dmV\n", priv->common.vref_mv); - priv->aclk = devm_clk_get(&pdev->dev, "adc"); if (IS_ERR(priv->aclk)) { ret = PTR_ERR(priv->aclk); - if (ret == -ENOENT) { - priv->aclk = NULL; - } else { + if (ret != -ENOENT) { dev_err(&pdev->dev, "Can't get 'adc' clock\n"); - goto err_regulator_disable; - } - } - - if (priv->aclk) { - ret = clk_prepare_enable(priv->aclk); - if (ret < 0) { - dev_err(&pdev->dev, "adc clk enable failed\n"); - goto err_regulator_disable; + return ret; } + priv->aclk = NULL; } priv->bclk = devm_clk_get(&pdev->dev, "bus"); if (IS_ERR(priv->bclk)) { ret = PTR_ERR(priv->bclk); - if (ret == -ENOENT) { - priv->bclk = NULL; - } else { + if (ret != -ENOENT) { dev_err(&pdev->dev, "Can't get 'bus' clock\n"); - goto err_aclk_disable; + return ret; } + priv->bclk = NULL; } - if (priv->bclk) { - ret = clk_prepare_enable(priv->bclk); - if (ret < 0) { - dev_err(&pdev->dev, "adc clk enable failed\n"); - goto err_aclk_disable; - } + pm_runtime_get_noresume(dev); + pm_runtime_set_active(dev); + pm_runtime_set_autosuspend_delay(dev, STM32_ADC_CORE_SLEEP_DELAY_MS); + pm_runtime_use_autosuspend(dev); + pm_runtime_enable(dev); + + ret = stm32_adc_core_hw_start(dev); + if (ret) + goto err_pm_stop; + + ret = regulator_get_voltage(priv->vref); + if (ret < 0) { + dev_err(&pdev->dev, "vref get voltage failed, %d\n", ret); + goto err_hw_stop; } + priv->common.vref_mv = ret / 1000; + dev_dbg(&pdev->dev, "vref+=%dmV\n", priv->common.vref_mv); ret = priv->cfg->clk_sel(pdev, priv); if (ret < 0) - goto err_bclk_disable; + goto err_hw_stop; ret = stm32_adc_irq_probe(pdev, priv); if (ret < 0) - goto err_bclk_disable; - - platform_set_drvdata(pdev, &priv->common); + goto err_hw_stop; ret = of_platform_populate(np, NULL, NULL, &pdev->dev); if (ret < 0) { @@ -478,21 +527,19 @@ static int stm32_adc_probe(struct platform_device *pdev) goto err_irq_remove; } + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + return 0; err_irq_remove: stm32_adc_irq_remove(pdev, priv); - -err_bclk_disable: - if (priv->bclk) - clk_disable_unprepare(priv->bclk); - -err_aclk_disable: - if (priv->aclk) - clk_disable_unprepare(priv->aclk); - -err_regulator_disable: - regulator_disable(priv->vref); +err_hw_stop: + stm32_adc_core_hw_stop(dev); +err_pm_stop: + pm_runtime_disable(dev); + pm_runtime_set_suspended(dev); + pm_runtime_put_noidle(dev); return ret; } @@ -502,17 +549,39 @@ static int stm32_adc_remove(struct platform_device *pdev) struct stm32_adc_common *common = platform_get_drvdata(pdev); struct stm32_adc_priv *priv = to_stm32_adc_priv(common); + pm_runtime_get_sync(&pdev->dev); of_platform_depopulate(&pdev->dev); stm32_adc_irq_remove(pdev, priv); - if (priv->bclk) - clk_disable_unprepare(priv->bclk); - if (priv->aclk) - clk_disable_unprepare(priv->aclk); - regulator_disable(priv->vref); + stm32_adc_core_hw_stop(&pdev->dev); + pm_runtime_disable(&pdev->dev); + pm_runtime_set_suspended(&pdev->dev); + pm_runtime_put_noidle(&pdev->dev); return 0; } +#if defined(CONFIG_PM) +static int stm32_adc_core_runtime_suspend(struct device *dev) +{ + stm32_adc_core_hw_stop(dev); + + return 0; +} + +static int stm32_adc_core_runtime_resume(struct device *dev) +{ + return stm32_adc_core_hw_start(dev); +} +#endif + +static const struct dev_pm_ops stm32_adc_core_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) + SET_RUNTIME_PM_OPS(stm32_adc_core_runtime_suspend, + stm32_adc_core_runtime_resume, + NULL) +}; + static const struct stm32_adc_priv_cfg stm32f4_adc_priv_cfg = { .regs = &stm32f4_adc_common_regs, .clk_sel = stm32f4_adc_clk_sel, @@ -552,6 +621,7 @@ static struct platform_driver stm32_adc_driver = { .driver = { .name = "stm32-adc-core", .of_match_table = stm32_adc_of_match, + .pm = &stm32_adc_core_pm_ops, }, }; module_platform_driver(stm32_adc_driver); diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c @@ -22,6 +22,7 @@ #include <linux/iopoll.h> #include <linux/module.h> #include <linux/platform_device.h> +#include <linux/pm_runtime.h> #include <linux/of.h> #include <linux/of_device.h> @@ -148,6 +149,7 @@ enum stm32h7_adc_dmngt { #define STM32_ADC_MAX_SMP 7 /* SMPx range is [0..7] */ #define STM32_ADC_TIMEOUT_US 100000 #define STM32_ADC_TIMEOUT (msecs_to_jiffies(STM32_ADC_TIMEOUT_US / 1000)) +#define STM32_ADC_HW_STOP_DELAY_MS 100 #define STM32_DMA_BUFFER_SIZE PAGE_SIZE @@ -199,11 +201,13 @@ struct stm32_adc_trig_info { * @calfact_s: Calibration offset for single ended channels * @calfact_d: Calibration offset in differential * @lincalfact: Linearity calibration factor + * @calibrated: Indicates calibration status */ struct stm32_adc_calib { u32 calfact_s; u32 calfact_d; u32 lincalfact[STM32H7_LINCALFACT_NUM]; + bool calibrated; }; /** @@ -251,7 +255,6 @@ struct stm32_adc; * @trigs: external trigger sources * @clk_required: clock is required * @has_vregready: vregready status flag presence - * @selfcalib: optional routine for self-calibration * @prepare: optional prepare routine (power-up, enable) * @start_conv: routine to start conversions * @stop_conv: routine to stop conversions @@ -264,7 +267,6 @@ struct stm32_adc_cfg { struct stm32_adc_trig_info *trigs; bool clk_required; bool has_vregready; - int (*selfcalib)(struct stm32_adc *); int (*prepare)(struct stm32_adc *); void (*start_conv)(struct stm32_adc *, bool dma); void (*stop_conv)(struct stm32_adc *); @@ -623,6 +625,47 @@ static void stm32_adc_set_res(struct stm32_adc *adc) stm32_adc_writel(adc, res->reg, val); } +static int stm32_adc_hw_stop(struct device *dev) +{ + struct stm32_adc *adc = dev_get_drvdata(dev); + + if (adc->cfg->unprepare) + adc->cfg->unprepare(adc); + + if (adc->clk) + clk_disable_unprepare(adc->clk); + + return 0; +} + +static int stm32_adc_hw_start(struct device *dev) +{ + struct stm32_adc *adc = dev_get_drvdata(dev); + int ret; + + if (adc->clk) { + ret = clk_prepare_enable(adc->clk); + if (ret) + return ret; + } + + stm32_adc_set_res(adc); + + if (adc->cfg->prepare) { + ret = adc->cfg->prepare(adc); + if (ret) + goto err_clk_dis; + } + + return 0; + +err_clk_dis: + if (adc->clk) + clk_disable_unprepare(adc->clk); + + return ret; +} + /** * stm32f4_adc_start_conv() - Start conversions for regular channels. * @adc: stm32 adc instance @@ -777,6 +820,7 @@ static void stm32h7_adc_disable(struct stm32_adc *adc) /** * stm32h7_adc_read_selfcalib() - read calibration shadow regs, save result * @adc: stm32 adc instance + * Note: Must be called once ADC is enabled, so LINCALRDYW[1..6] are writable */ static int stm32h7_adc_read_selfcalib(struct stm32_adc *adc) { @@ -784,11 +828,6 @@ static int stm32h7_adc_read_selfcalib(struct stm32_adc *adc) int i, ret; u32 lincalrdyw_mask, val; - /* Enable adc so LINCALRDYW1..6 bits are writable */ - ret = stm32h7_adc_enable(adc); - if (ret) - return ret; - /* Read linearity calibration */ lincalrdyw_mask = STM32H7_LINCALRDYW6; for (i = STM32H7_LINCALFACT_NUM - 1; i >= 0; i--) { @@ -801,7 +840,7 @@ static int stm32h7_adc_read_selfcalib(struct stm32_adc *adc) 100, STM32_ADC_TIMEOUT_US); if (ret) { dev_err(&indio_dev->dev, "Failed to read calfact\n"); - goto disable; + return ret; } val = stm32_adc_readl(adc, STM32H7_ADC_CALFACT2); @@ -817,11 +856,9 @@ static int stm32h7_adc_read_selfcalib(struct stm32_adc *adc) adc->cal.calfact_s >>= STM32H7_CALFACT_S_SHIFT; adc->cal.calfact_d = (val & STM32H7_CALFACT_D_MASK); adc->cal.calfact_d >>= STM32H7_CALFACT_D_SHIFT; + adc->cal.calibrated = true; -disable: - stm32h7_adc_disable(adc); - - return ret; + return 0; } /** @@ -898,9 +935,9 @@ static int stm32h7_adc_restore_selfcalib(struct stm32_adc *adc) #define STM32H7_ADC_CALIB_TIMEOUT_US 100000 /** - * stm32h7_adc_selfcalib() - Procedure to calibrate ADC (from power down) + * stm32h7_adc_selfcalib() - Procedure to calibrate ADC * @adc: stm32 adc instance - * Exit from power down, calibrate ADC, then return to power down. + * Note: Must be called once ADC is out of power down. */ static int stm32h7_adc_selfcalib(struct stm32_adc *adc) { @@ -908,9 +945,8 @@ static int stm32h7_adc_selfcalib(struct stm32_adc *adc) int ret; u32 val; - ret = stm32h7_adc_exit_pwr_down(adc); - if (ret) - return ret; + if (adc->cal.calibrated) + return true; /* * Select calibration mode: @@ -927,7 +963,7 @@ static int stm32h7_adc_selfcalib(struct stm32_adc *adc) STM32H7_ADC_CALIB_TIMEOUT_US); if (ret) { dev_err(&indio_dev->dev, "calibration failed\n"); - goto pwr_dwn; + goto out; } /* @@ -944,18 +980,13 @@ static int stm32h7_adc_selfcalib(struct stm32_adc *adc) STM32H7_ADC_CALIB_TIMEOUT_US); if (ret) { dev_err(&indio_dev->dev, "calibration failed\n"); - goto pwr_dwn; + goto out; } +out: stm32_adc_clr_bits(adc, STM32H7_ADC_CR, STM32H7_ADCALDIF | STM32H7_ADCALLIN); - /* Read calibration result for future reference */ - ret = stm32h7_adc_read_selfcalib(adc); - -pwr_dwn: - stm32h7_adc_enter_pwr_down(adc); - return ret; } @@ -972,19 +1003,28 @@ pwr_dwn: */ static int stm32h7_adc_prepare(struct stm32_adc *adc) { - int ret; + int calib, ret; ret = stm32h7_adc_exit_pwr_down(adc); if (ret) return ret; + ret = stm32h7_adc_selfcalib(adc); + if (ret < 0) + goto pwr_dwn; + calib = ret; + stm32_adc_writel(adc, STM32H7_ADC_DIFSEL, adc->difsel); ret = stm32h7_adc_enable(adc); if (ret) goto pwr_dwn; - ret = stm32h7_adc_restore_selfcalib(adc); + /* Either restore or read calibration result for future reference */ + if (calib) + ret = stm32h7_adc_restore_selfcalib(adc); + else + ret = stm32h7_adc_read_selfcalib(adc); if (ret) goto disable; @@ -1174,6 +1214,7 @@ static int stm32_adc_single_conv(struct iio_dev *indio_dev, int *res) { struct stm32_adc *adc = iio_priv(indio_dev); + struct device *dev = indio_dev->dev.parent; const struct stm32_adc_regspec *regs = adc->cfg->regs; long timeout; u32 val; @@ -1183,10 +1224,10 @@ static int stm32_adc_single_conv(struct iio_dev *indio_dev, adc->bufi = 0; - if (adc->cfg->prepare) { - ret = adc->cfg->prepare(adc); - if (ret) - return ret; + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + pm_runtime_put_noidle(dev); + return ret; } /* Apply sampling time settings */ @@ -1224,8 +1265,8 @@ static int stm32_adc_single_conv(struct iio_dev *indio_dev, stm32_adc_conv_irq_disable(adc); - if (adc->cfg->unprepare) - adc->cfg->unprepare(adc); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); return ret; } @@ -1333,15 +1374,22 @@ static int stm32_adc_update_scan_mode(struct iio_dev *indio_dev, const unsigned long *scan_mask) { struct stm32_adc *adc = iio_priv(indio_dev); + struct device *dev = indio_dev->dev.parent; int ret; + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + pm_runtime_put_noidle(dev); + return ret; + } + adc->num_conv = bitmap_weight(scan_mask, indio_dev->masklength); ret = stm32_adc_conf_scan_seq(indio_dev, scan_mask); - if (ret) - return ret; + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); - return 0; + return ret; } static int stm32_adc_of_xlate(struct iio_dev *indio_dev, @@ -1371,12 +1419,23 @@ static int stm32_adc_debugfs_reg_access(struct iio_dev *indio_dev, unsigned *readval) { struct stm32_adc *adc = iio_priv(indio_dev); + struct device *dev = indio_dev->dev.parent; + int ret; + + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + pm_runtime_put_noidle(dev); + return ret; + } if (!readval) stm32_adc_writel(adc, reg, writeval); else *readval = stm32_adc_readl(adc, reg); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + return 0; } @@ -1459,21 +1518,22 @@ static int stm32_adc_dma_start(struct iio_dev *indio_dev) return 0; } -static int stm32_adc_buffer_postenable(struct iio_dev *indio_dev) +static int __stm32_adc_buffer_postenable(struct iio_dev *indio_dev) { struct stm32_adc *adc = iio_priv(indio_dev); + struct device *dev = indio_dev->dev.parent; int ret; - if (adc->cfg->prepare) { - ret = adc->cfg->prepare(adc); - if (ret) - return ret; + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + pm_runtime_put_noidle(dev); + return ret; } ret = stm32_adc_set_trig(indio_dev, indio_dev->trig); if (ret) { dev_err(&indio_dev->dev, "Can't set trigger\n"); - goto err_unprepare; + goto err_pm_put; } ret = stm32_adc_dma_start(indio_dev); @@ -1482,10 +1542,6 @@ static int stm32_adc_buffer_postenable(struct iio_dev *indio_dev) goto err_clr_trig; } - ret = iio_triggered_buffer_postenable(indio_dev); - if (ret < 0) - goto err_stop_dma; - /* Reset adc buffer index */ adc->bufi = 0; @@ -1496,39 +1552,58 @@ static int stm32_adc_buffer_postenable(struct iio_dev *indio_dev) return 0; -err_stop_dma: - if (adc->dma_chan) - dmaengine_terminate_all(adc->dma_chan); err_clr_trig: stm32_adc_set_trig(indio_dev, NULL); -err_unprepare: - if (adc->cfg->unprepare) - adc->cfg->unprepare(adc); +err_pm_put: + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); return ret; } -static int stm32_adc_buffer_predisable(struct iio_dev *indio_dev) +static int stm32_adc_buffer_postenable(struct iio_dev *indio_dev) { - struct stm32_adc *adc = iio_priv(indio_dev); int ret; + ret = iio_triggered_buffer_postenable(indio_dev); + if (ret < 0) + return ret; + + ret = __stm32_adc_buffer_postenable(indio_dev); + if (ret < 0) + iio_triggered_buffer_predisable(indio_dev); + + return ret; +} + +static void __stm32_adc_buffer_predisable(struct iio_dev *indio_dev) +{ + struct stm32_adc *adc = iio_priv(indio_dev); + struct device *dev = indio_dev->dev.parent; + adc->cfg->stop_conv(adc); if (!adc->dma_chan) stm32_adc_conv_irq_disable(adc); - ret = iio_triggered_buffer_predisable(indio_dev); - if (ret < 0) - dev_err(&indio_dev->dev, "predisable failed\n"); - if (adc->dma_chan) dmaengine_terminate_all(adc->dma_chan); if (stm32_adc_set_trig(indio_dev, NULL)) dev_err(&indio_dev->dev, "Can't clear trigger\n"); - if (adc->cfg->unprepare) - adc->cfg->unprepare(adc); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); +} + +static int stm32_adc_buffer_predisable(struct iio_dev *indio_dev) +{ + int ret; + + __stm32_adc_buffer_predisable(indio_dev); + + ret = iio_triggered_buffer_predisable(indio_dev); + if (ret < 0) + dev_err(&indio_dev->dev, "predisable failed\n"); return ret; } @@ -1867,32 +1942,17 @@ static int stm32_adc_probe(struct platform_device *pdev) } } - if (adc->clk) { - ret = clk_prepare_enable(adc->clk); - if (ret < 0) { - dev_err(&pdev->dev, "clk enable failed\n"); - return ret; - } - } - ret = stm32_adc_of_get_resolution(indio_dev); if (ret < 0) - goto err_clk_disable; - stm32_adc_set_res(adc); - - if (adc->cfg->selfcalib) { - ret = adc->cfg->selfcalib(adc); - if (ret) - goto err_clk_disable; - } + return ret; ret = stm32_adc_chan_of_init(indio_dev); if (ret < 0) - goto err_clk_disable; + return ret; ret = stm32_adc_dma_request(indio_dev); if (ret < 0) - goto err_clk_disable; + return ret; ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, @@ -1903,15 +1963,35 @@ static int stm32_adc_probe(struct platform_device *pdev) goto err_dma_disable; } + /* Get stm32-adc-core PM online */ + pm_runtime_get_noresume(dev); + pm_runtime_set_active(dev); + pm_runtime_set_autosuspend_delay(dev, STM32_ADC_HW_STOP_DELAY_MS); + pm_runtime_use_autosuspend(dev); + pm_runtime_enable(dev); + + ret = stm32_adc_hw_start(dev); + if (ret) + goto err_buffer_cleanup; + ret = iio_device_register(indio_dev); if (ret) { dev_err(&pdev->dev, "iio dev register failed\n"); - goto err_buffer_cleanup; + goto err_hw_stop; } + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + return 0; +err_hw_stop: + stm32_adc_hw_stop(dev); + err_buffer_cleanup: + pm_runtime_disable(dev); + pm_runtime_set_suspended(dev); + pm_runtime_put_noidle(dev); iio_triggered_buffer_cleanup(indio_dev); err_dma_disable: @@ -1921,9 +2001,6 @@ err_dma_disable: adc->rx_buf, adc->rx_dma_buf); dma_release_channel(adc->dma_chan); } -err_clk_disable: - if (adc->clk) - clk_disable_unprepare(adc->clk); return ret; } @@ -1933,7 +2010,12 @@ static int stm32_adc_remove(struct platform_device *pdev) struct stm32_adc *adc = platform_get_drvdata(pdev); struct iio_dev *indio_dev = iio_priv_to_dev(adc); + pm_runtime_get_sync(&pdev->dev); iio_device_unregister(indio_dev); + stm32_adc_hw_stop(&pdev->dev); + pm_runtime_disable(&pdev->dev); + pm_runtime_set_suspended(&pdev->dev); + pm_runtime_put_noidle(&pdev->dev); iio_triggered_buffer_cleanup(indio_dev); if (adc->dma_chan) { dma_free_coherent(adc->dma_chan->device->dev, @@ -1941,12 +2023,62 @@ static int stm32_adc_remove(struct platform_device *pdev) adc->rx_buf, adc->rx_dma_buf); dma_release_channel(adc->dma_chan); } - if (adc->clk) - clk_disable_unprepare(adc->clk); return 0; } +#if defined(CONFIG_PM_SLEEP) +static int stm32_adc_suspend(struct device *dev) +{ + struct stm32_adc *adc = dev_get_drvdata(dev); + struct iio_dev *indio_dev = iio_priv_to_dev(adc); + + if (iio_buffer_enabled(indio_dev)) + __stm32_adc_buffer_predisable(indio_dev); + + return pm_runtime_force_suspend(dev); +} + +static int stm32_adc_resume(struct device *dev) +{ + struct stm32_adc *adc = dev_get_drvdata(dev); + struct iio_dev *indio_dev = iio_priv_to_dev(adc); + int ret; + + ret = pm_runtime_force_resume(dev); + if (ret < 0) + return ret; + + if (!iio_buffer_enabled(indio_dev)) + return 0; + + ret = stm32_adc_update_scan_mode(indio_dev, + indio_dev->active_scan_mask); + if (ret < 0) + return ret; + + return __stm32_adc_buffer_postenable(indio_dev); +} +#endif + +#if defined(CONFIG_PM) +static int stm32_adc_runtime_suspend(struct device *dev) +{ + return stm32_adc_hw_stop(dev); +} + +static int stm32_adc_runtime_resume(struct device *dev) +{ + return stm32_adc_hw_start(dev); +} +#endif + +static const struct dev_pm_ops stm32_adc_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(stm32_adc_suspend, stm32_adc_resume) + SET_RUNTIME_PM_OPS(stm32_adc_runtime_suspend, stm32_adc_runtime_resume, + NULL) +}; + static const struct stm32_adc_cfg stm32f4_adc_cfg = { .regs = &stm32f4_adc_regspec, .adc_info = &stm32f4_adc_info, @@ -1961,7 +2093,6 @@ static const struct stm32_adc_cfg stm32h7_adc_cfg = { .regs = &stm32h7_adc_regspec, .adc_info = &stm32h7_adc_info, .trigs = stm32h7_adc_trigs, - .selfcalib = stm32h7_adc_selfcalib, .start_conv = stm32h7_adc_start_conv, .stop_conv = stm32h7_adc_stop_conv, .prepare = stm32h7_adc_prepare, @@ -1974,7 +2105,6 @@ static const struct stm32_adc_cfg stm32mp1_adc_cfg = { .adc_info = &stm32h7_adc_info, .trigs = stm32h7_adc_trigs, .has_vregready = true, - .selfcalib = stm32h7_adc_selfcalib, .start_conv = stm32h7_adc_start_conv, .stop_conv = stm32h7_adc_stop_conv, .prepare = stm32h7_adc_prepare, @@ -1996,6 +2126,7 @@ static struct platform_driver stm32_adc_driver = { .driver = { .name = "stm32-adc", .of_match_table = stm32_adc_of_match, + .pm = &stm32_adc_pm_ops, }, }; module_platform_driver(stm32_adc_driver); diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2014 Angelo Compagnucci <angelo.compagnucci@gmail.com> * @@ -6,16 +7,14 @@ * http://www.ti.com/lit/ds/symlink/adc128s052.pdf * http://www.ti.com/lit/ds/symlink/adc122s021.pdf * http://www.ti.com/lit/ds/symlink/adc124s021.pdf - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ +#include <linux/acpi.h> #include <linux/err.h> #include <linux/spi/spi.h> #include <linux/module.h> #include <linux/iio/iio.h> +#include <linux/property.h> #include <linux/regulator/consumer.h> struct adc128_configuration { @@ -135,10 +134,15 @@ static const struct iio_info adc128_info = { static int adc128_probe(struct spi_device *spi) { struct iio_dev *indio_dev; + unsigned int config; struct adc128 *adc; - int config = spi_get_device_id(spi)->driver_data; int ret; + if (dev_fwnode(&spi->dev)) + config = (unsigned long) device_get_match_data(&spi->dev); + else + config = spi_get_device_id(spi)->driver_data; + indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adc)); if (!indio_dev) return -ENOMEM; @@ -186,23 +190,40 @@ static int adc128_remove(struct spi_device *spi) static const struct of_device_id adc128_of_match[] = { { .compatible = "ti,adc128s052", }, { .compatible = "ti,adc122s021", }, + { .compatible = "ti,adc122s051", }, + { .compatible = "ti,adc122s101", }, { .compatible = "ti,adc124s021", }, + { .compatible = "ti,adc124s051", }, + { .compatible = "ti,adc124s101", }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, adc128_of_match); static const struct spi_device_id adc128_id[] = { - { "adc128s052", 0}, /* index into adc128_config */ - { "adc122s021", 1}, - { "adc124s021", 2}, + { "adc128s052", 0 }, /* index into adc128_config */ + { "adc122s021", 1 }, + { "adc122s051", 1 }, + { "adc122s101", 1 }, + { "adc124s021", 2 }, + { "adc124s051", 2 }, + { "adc124s101", 2 }, { } }; MODULE_DEVICE_TABLE(spi, adc128_id); +#ifdef CONFIG_ACPI +static const struct acpi_device_id adc128_acpi_match[] = { + { "AANT1280", 2 }, /* ADC124S021 compatible ACPI ID */ + { } +}; +MODULE_DEVICE_TABLE(acpi, adc128_acpi_match); +#endif + static struct spi_driver adc128_driver = { .driver = { .name = "adc128s052", .of_match_table = of_match_ptr(adc128_of_match), + .acpi_match_table = ACPI_PTR(adc128_acpi_match), }, .probe = adc128_probe, .remove = adc128_remove, diff --git a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c @@ -336,7 +336,7 @@ static void adjust_exponent_nano(int *val0, int *val1, int scale0, scale1 = scale1 % pow_10(8 - i); } *val0 += res; - *val1 = scale1 * pow_10(exp); + *val1 = scale1 * pow_10(exp); } else if (exp < 0) { exp = abs(exp); if (exp > 9) { diff --git a/drivers/iio/common/ssp_sensors/ssp_dev.c b/drivers/iio/common/ssp_sensors/ssp_dev.c @@ -462,43 +462,35 @@ static struct ssp_data *ssp_parse_dt(struct device *dev) data->mcu_ap_gpio = of_get_named_gpio(node, "mcu-ap-gpios", 0); if (data->mcu_ap_gpio < 0) - goto err_free_pd; + return NULL; data->ap_mcu_gpio = of_get_named_gpio(node, "ap-mcu-gpios", 0); if (data->ap_mcu_gpio < 0) - goto err_free_pd; + return NULL; data->mcu_reset_gpio = of_get_named_gpio(node, "mcu-reset-gpios", 0); if (data->mcu_reset_gpio < 0) - goto err_free_pd; + return NULL; ret = devm_gpio_request_one(dev, data->ap_mcu_gpio, GPIOF_OUT_INIT_HIGH, "ap-mcu-gpios"); if (ret) - goto err_free_pd; + return NULL; ret = devm_gpio_request_one(dev, data->mcu_reset_gpio, GPIOF_OUT_INIT_HIGH, "mcu-reset-gpios"); if (ret) - goto err_ap_mcu; + return NULL; match = of_match_node(ssp_of_match, node); if (!match) - goto err_mcu_reset_gpio; + return NULL; data->sensorhub_info = match->data; dev_set_drvdata(dev, data); return data; - -err_mcu_reset_gpio: - devm_gpio_free(dev, data->mcu_reset_gpio); -err_ap_mcu: - devm_gpio_free(dev, data->ap_mcu_gpio); -err_free_pd: - devm_kfree(dev, data); - return NULL; } #else static struct ssp_data *ssp_parse_dt(struct device *pdev) diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c @@ -133,7 +133,7 @@ static int st_sensors_match_fs(struct st_sensor_settings *sensor_settings, for (i = 0; i < ST_SENSORS_FULLSCALE_AVL_MAX; i++) { if (sensor_settings->fs.fs_avl[i].num == 0) - goto st_sensors_match_odr_error; + return ret; if (sensor_settings->fs.fs_avl[i].num == fs) { *index_fs_avl = i; @@ -142,7 +142,6 @@ static int st_sensors_match_fs(struct st_sensor_settings *sensor_settings, } } -st_sensors_match_odr_error: return ret; } diff --git a/drivers/iio/common/st_sensors/st_sensors_trigger.c b/drivers/iio/common/st_sensors/st_sensors_trigger.c @@ -104,7 +104,7 @@ static irqreturn_t st_sensors_irq_thread(int irq, void *p) return IRQ_HANDLED; /* - * If we are using egde IRQs, new samples arrived while processing + * If we are using edge IRQs, new samples arrived while processing * the IRQ and those may be missed unless we pick them here, so poll * again. If the sensor delivery frequency is very high, this thread * turns into a polled loop handler. @@ -148,7 +148,7 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev, if (!sdata->sensor_settings->drdy_irq.addr_ihl) { dev_err(&indio_dev->dev, "falling/low specified for IRQ " - "but hardware only support rising/high: " + "but hardware supports only rising/high: " "will request rising/high\n"); if (irq_trig == IRQF_TRIGGER_FALLING) irq_trig = IRQF_TRIGGER_RISING; diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig @@ -366,6 +366,15 @@ config TI_DAC5571 If compiled as a module, it will be called ti-dac5571. +config TI_DAC7311 + tristate "Texas Instruments 8/10/12-bit 1-channel DAC driver" + depends on SPI + help + Driver for the Texas Instruments + DAC7311, DAC6311, DAC5311. + + If compiled as a module, it will be called ti-dac7311. + config VF610_DAC tristate "Vybrid vf610 DAC driver" depends on OF diff --git a/drivers/iio/dac/Makefile b/drivers/iio/dac/Makefile @@ -40,4 +40,5 @@ obj-$(CONFIG_STM32_DAC_CORE) += stm32-dac-core.o obj-$(CONFIG_STM32_DAC) += stm32-dac.o obj-$(CONFIG_TI_DAC082S085) += ti-dac082s085.o obj-$(CONFIG_TI_DAC5571) += ti-dac5571.o +obj-$(CONFIG_TI_DAC7311) += ti-dac7311.o obj-$(CONFIG_VF610_DAC) += vf610_dac.o diff --git a/drivers/iio/dac/ad5686-spi.c b/drivers/iio/dac/ad5686-spi.c @@ -19,6 +19,12 @@ static int ad5686_spi_write(struct ad5686_state *st, u8 tx_len, *buf; switch (st->chip_info->regmap_type) { + case AD5310_REGMAP: + st->data[0].d16 = cpu_to_be16(AD5310_CMD(cmd) | + val); + buf = &st->data[0].d8[0]; + tx_len = 2; + break; case AD5683_REGMAP: st->data[0].d32 = cpu_to_be32(AD5686_CMD(cmd) | AD5683_DATA(val)); @@ -56,10 +62,18 @@ static int ad5686_spi_read(struct ad5686_state *st, u8 addr) u8 cmd = 0; int ret; - if (st->chip_info->regmap_type == AD5686_REGMAP) - cmd = AD5686_CMD_READBACK_ENABLE; - else if (st->chip_info->regmap_type == AD5683_REGMAP) + switch (st->chip_info->regmap_type) { + case AD5310_REGMAP: + return -ENOTSUPP; + case AD5683_REGMAP: cmd = AD5686_CMD_READBACK_ENABLE_V2; + break; + case AD5686_REGMAP: + cmd = AD5686_CMD_READBACK_ENABLE; + break; + default: + return -EINVAL; + } st->data[0].d32 = cpu_to_be32(AD5686_CMD(cmd) | AD5686_ADDR(addr)); @@ -86,6 +100,7 @@ static int ad5686_spi_remove(struct spi_device *spi) } static const struct spi_device_id ad5686_spi_id[] = { + {"ad5310r", ID_AD5310R}, {"ad5672r", ID_AD5672R}, {"ad5676", ID_AD5676}, {"ad5676r", ID_AD5676R}, diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c @@ -83,6 +83,10 @@ static ssize_t ad5686_write_dac_powerdown(struct iio_dev *indio_dev, st->pwr_down_mask &= ~(0x3 << (chan->channel * 2)); switch (st->chip_info->regmap_type) { + case AD5310_REGMAP: + shift = 9; + ref_bit_msk = AD5310_REF_BIT_MSK; + break; case AD5683_REGMAP: shift = 13; ref_bit_msk = AD5683_REF_BIT_MSK; @@ -124,7 +128,8 @@ static int ad5686_read_raw(struct iio_dev *indio_dev, mutex_unlock(&indio_dev->mlock); if (ret < 0) return ret; - *val = ret; + *val = (ret >> chan->scan_type.shift) & + GENMASK(chan->scan_type.realbits - 1, 0); return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: *val = st->vref_mv; @@ -221,6 +226,7 @@ static struct iio_chan_spec name[] = { \ AD5868_CHANNEL(7, 7, bits, _shift), \ } +DECLARE_AD5693_CHANNELS(ad5310r_channels, 10, 2); DECLARE_AD5693_CHANNELS(ad5311r_channels, 10, 6); DECLARE_AD5676_CHANNELS(ad5672_channels, 12, 4); DECLARE_AD5676_CHANNELS(ad5676_channels, 16, 0); @@ -232,6 +238,12 @@ DECLARE_AD5693_CHANNELS(ad5692r_channels, 14, 2); DECLARE_AD5693_CHANNELS(ad5691r_channels, 12, 4); static const struct ad5686_chip_info ad5686_chip_info_tbl[] = { + [ID_AD5310R] = { + .channels = ad5310r_channels, + .int_vref_mv = 2500, + .num_channels = 1, + .regmap_type = AD5310_REGMAP, + }, [ID_AD5311R] = { .channels = ad5311r_channels, .int_vref_mv = 2500, @@ -419,6 +431,11 @@ int ad5686_probe(struct device *dev, indio_dev->num_channels = st->chip_info->num_channels; switch (st->chip_info->regmap_type) { + case AD5310_REGMAP: + cmd = AD5686_CMD_CONTROL_REG; + ref_bit_msk = AD5310_REF_BIT_MSK; + st->use_internal_vref = !voltage_uv; + break; case AD5683_REGMAP: cmd = AD5686_CMD_CONTROL_REG; ref_bit_msk = AD5683_REF_BIT_MSK; diff --git a/drivers/iio/dac/ad5686.h b/drivers/iio/dac/ad5686.h @@ -13,7 +13,10 @@ #include <linux/mutex.h> #include <linux/kernel.h> +#define AD5310_CMD(x) ((x) << 12) + #define AD5683_DATA(x) ((x) << 4) + #define AD5686_ADDR(x) ((x) << 16) #define AD5686_CMD(x) ((x) << 20) @@ -38,6 +41,8 @@ #define AD5686_CMD_CONTROL_REG 0x4 #define AD5686_CMD_READBACK_ENABLE_V2 0x5 + +#define AD5310_REF_BIT_MSK BIT(8) #define AD5683_REF_BIT_MSK BIT(12) #define AD5693_REF_BIT_MSK BIT(12) @@ -45,6 +50,7 @@ * ad5686_supported_device_ids: */ enum ad5686_supported_device_ids { + ID_AD5310R, ID_AD5311R, ID_AD5671R, ID_AD5672R, @@ -72,6 +78,7 @@ enum ad5686_supported_device_ids { }; enum ad5686_regmap_type { + AD5310_REGMAP, AD5683_REGMAP, AD5686_REGMAP, AD5693_REGMAP diff --git a/drivers/iio/dac/dpot-dac.c b/drivers/iio/dac/dpot-dac.c @@ -74,11 +74,11 @@ static int dpot_dac_read_raw(struct iio_dev *indio_dev, case IIO_VAL_INT: /* * Convert integer scale to fractional scale by - * setting the denominator (val2) to one... + * setting the denominator (val2) to one, and... */ *val2 = 1; ret = IIO_VAL_FRACTIONAL; - /* ...and fall through. */ + /* fall through */ case IIO_VAL_FRACTIONAL: *val *= regulator_get_voltage(dac->vref) / 1000; *val2 *= dac->max_ohms; diff --git a/drivers/iio/dac/ti-dac7311.c b/drivers/iio/dac/ti-dac7311.c @@ -0,0 +1,338 @@ +// SPDX-License-Identifier: GPL-2.0 +/* ti-dac7311.c - Texas Instruments 8/10/12-bit 1-channel DAC driver + * + * Copyright (C) 2018 CMC NV + * + * http://www.ti.com/lit/ds/symlink/dac7311.pdf + */ + +#include <linux/iio/iio.h> +#include <linux/module.h> +#include <linux/regulator/consumer.h> +#include <linux/spi/spi.h> + +enum { + ID_DAC5311 = 0, + ID_DAC6311, + ID_DAC7311, +}; + +enum { + POWER_1KOHM_TO_GND = 0, + POWER_100KOHM_TO_GND, + POWER_TRI_STATE, +}; + +struct ti_dac_spec { + u8 resolution; +}; + +static const struct ti_dac_spec ti_dac_spec[] = { + [ID_DAC5311] = { .resolution = 8 }, + [ID_DAC6311] = { .resolution = 10 }, + [ID_DAC7311] = { .resolution = 12 }, +}; + +/** + * struct ti_dac_chip - TI DAC chip + * @lock: protects write sequences + * @vref: regulator generating Vref + * @spi: SPI device to send data to the device + * @val: cached value + * @powerdown: whether the chip is powered down + * @powerdown_mode: selected by the user + * @resolution: resolution of the chip + * @buf: buffer for transfer data + */ +struct ti_dac_chip { + struct mutex lock; + struct regulator *vref; + struct spi_device *spi; + u16 val; + bool powerdown; + u8 powerdown_mode; + u8 resolution; + u8 buf[2] ____cacheline_aligned; +}; + +static u8 ti_dac_get_power(struct ti_dac_chip *ti_dac, bool powerdown) +{ + if (powerdown) + return ti_dac->powerdown_mode + 1; + + return 0; +} + +static int ti_dac_cmd(struct ti_dac_chip *ti_dac, u8 power, u16 val) +{ + u8 shift = 14 - ti_dac->resolution; + + ti_dac->buf[0] = (val << shift) & 0xFF; + ti_dac->buf[1] = (power << 6) | (val >> (8 - shift)); + return spi_write(ti_dac->spi, ti_dac->buf, 2); +} + +static const char * const ti_dac_powerdown_modes[] = { + "1kohm_to_gnd", + "100kohm_to_gnd", + "three_state", +}; + +static int ti_dac_get_powerdown_mode(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan) +{ + struct ti_dac_chip *ti_dac = iio_priv(indio_dev); + + return ti_dac->powerdown_mode; +} + +static int ti_dac_set_powerdown_mode(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + unsigned int mode) +{ + struct ti_dac_chip *ti_dac = iio_priv(indio_dev); + + ti_dac->powerdown_mode = mode; + return 0; +} + +static const struct iio_enum ti_dac_powerdown_mode = { + .items = ti_dac_powerdown_modes, + .num_items = ARRAY_SIZE(ti_dac_powerdown_modes), + .get = ti_dac_get_powerdown_mode, + .set = ti_dac_set_powerdown_mode, +}; + +static ssize_t ti_dac_read_powerdown(struct iio_dev *indio_dev, + uintptr_t private, + const struct iio_chan_spec *chan, + char *buf) +{ + struct ti_dac_chip *ti_dac = iio_priv(indio_dev); + + return sprintf(buf, "%d\n", ti_dac->powerdown); +} + +static ssize_t ti_dac_write_powerdown(struct iio_dev *indio_dev, + uintptr_t private, + const struct iio_chan_spec *chan, + const char *buf, size_t len) +{ + struct ti_dac_chip *ti_dac = iio_priv(indio_dev); + bool powerdown; + u8 power; + int ret; + + ret = strtobool(buf, &powerdown); + if (ret) + return ret; + + power = ti_dac_get_power(ti_dac, powerdown); + + mutex_lock(&ti_dac->lock); + ret = ti_dac_cmd(ti_dac, power, 0); + if (!ret) + ti_dac->powerdown = powerdown; + mutex_unlock(&ti_dac->lock); + + return ret ? ret : len; +} + +static const struct iio_chan_spec_ext_info ti_dac_ext_info[] = { + { + .name = "powerdown", + .read = ti_dac_read_powerdown, + .write = ti_dac_write_powerdown, + .shared = IIO_SHARED_BY_TYPE, + }, + IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, &ti_dac_powerdown_mode), + IIO_ENUM_AVAILABLE("powerdown_mode", &ti_dac_powerdown_mode), + { }, +}; + +#define TI_DAC_CHANNEL(chan) { \ + .type = IIO_VOLTAGE, \ + .channel = (chan), \ + .output = true, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ + .ext_info = ti_dac_ext_info, \ +} + +static const struct iio_chan_spec ti_dac_channels[] = { + TI_DAC_CHANNEL(0), +}; + +static int ti_dac_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct ti_dac_chip *ti_dac = iio_priv(indio_dev); + int ret; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + *val = ti_dac->val; + return IIO_VAL_INT; + + case IIO_CHAN_INFO_SCALE: + ret = regulator_get_voltage(ti_dac->vref); + if (ret < 0) + return ret; + + *val = ret / 1000; + *val2 = ti_dac->resolution; + return IIO_VAL_FRACTIONAL_LOG2; + } + + return -EINVAL; +} + +static int ti_dac_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct ti_dac_chip *ti_dac = iio_priv(indio_dev); + u8 power = ti_dac_get_power(ti_dac, ti_dac->powerdown); + int ret; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + if (ti_dac->val == val) + return 0; + + if (val >= (1 << ti_dac->resolution) || val < 0) + return -EINVAL; + + if (ti_dac->powerdown) + return -EBUSY; + + mutex_lock(&ti_dac->lock); + ret = ti_dac_cmd(ti_dac, power, val); + if (!ret) + ti_dac->val = val; + mutex_unlock(&ti_dac->lock); + break; + + default: + ret = -EINVAL; + } + + return ret; +} + +static int ti_dac_write_raw_get_fmt(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, long mask) +{ + return IIO_VAL_INT; +} + +static const struct iio_info ti_dac_info = { + .read_raw = ti_dac_read_raw, + .write_raw = ti_dac_write_raw, + .write_raw_get_fmt = ti_dac_write_raw_get_fmt, +}; + +static int ti_dac_probe(struct spi_device *spi) +{ + struct device *dev = &spi->dev; + const struct ti_dac_spec *spec; + struct ti_dac_chip *ti_dac; + struct iio_dev *indio_dev; + int ret; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*ti_dac)); + if (!indio_dev) { + dev_err(dev, "can not allocate iio device\n"); + return -ENOMEM; + } + + spi->mode = SPI_MODE_1; + spi->bits_per_word = 16; + spi_setup(spi); + + indio_dev->dev.parent = dev; + indio_dev->dev.of_node = spi->dev.of_node; + indio_dev->info = &ti_dac_info; + indio_dev->name = spi_get_device_id(spi)->name; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = ti_dac_channels; + spi_set_drvdata(spi, indio_dev); + + ti_dac = iio_priv(indio_dev); + ti_dac->powerdown = false; + ti_dac->spi = spi; + + spec = &ti_dac_spec[spi_get_device_id(spi)->driver_data]; + indio_dev->num_channels = 1; + ti_dac->resolution = spec->resolution; + + ti_dac->vref = devm_regulator_get(dev, "vref"); + if (IS_ERR(ti_dac->vref)) { + dev_err(dev, "error to get regulator\n"); + return PTR_ERR(ti_dac->vref); + } + + ret = regulator_enable(ti_dac->vref); + if (ret < 0) { + dev_err(dev, "can not enable regulator\n"); + return ret; + } + + mutex_init(&ti_dac->lock); + + ret = iio_device_register(indio_dev); + if (ret) { + dev_err(dev, "fail to register iio device: %d\n", ret); + goto err; + } + + return 0; + +err: + mutex_destroy(&ti_dac->lock); + regulator_disable(ti_dac->vref); + return ret; +} + +static int ti_dac_remove(struct spi_device *spi) +{ + struct iio_dev *indio_dev = spi_get_drvdata(spi); + struct ti_dac_chip *ti_dac = iio_priv(indio_dev); + + iio_device_unregister(indio_dev); + mutex_destroy(&ti_dac->lock); + regulator_disable(ti_dac->vref); + return 0; +} + +static const struct of_device_id ti_dac_of_id[] = { + { .compatible = "ti,dac5311" }, + { .compatible = "ti,dac6311" }, + { .compatible = "ti,dac7311" }, + { } +}; +MODULE_DEVICE_TABLE(of, ti_dac_of_id); + +static const struct spi_device_id ti_dac_spi_id[] = { + { "dac5311", ID_DAC5311 }, + { "dac6311", ID_DAC6311 }, + { "dac7311", ID_DAC7311 }, + { } +}; +MODULE_DEVICE_TABLE(spi, ti_dac_spi_id); + +static struct spi_driver ti_dac_driver = { + .driver = { + .name = "ti-dac7311", + .of_match_table = ti_dac_of_id, + }, + .probe = ti_dac_probe, + .remove = ti_dac_remove, + .id_table = ti_dac_spi_id, +}; +module_spi_driver(ti_dac_driver); + +MODULE_AUTHOR("Charles-Antoine Couret <charles-antoine.couret@essensium.com>"); +MODULE_DESCRIPTION("Texas Instruments 8/10/12-bit 1-channel DAC driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/imu/bmi160/bmi160.h b/drivers/iio/imu/bmi160/bmi160.h @@ -6,6 +6,5 @@ extern const struct regmap_config bmi160_regmap_config; int bmi160_core_probe(struct device *dev, struct regmap *regmap, const char *name, bool use_spi); -void bmi160_core_remove(struct device *dev); #endif /* BMI160_H_ */ diff --git a/drivers/iio/imu/bmi160/bmi160_core.c b/drivers/iio/imu/bmi160/bmi160_core.c @@ -542,10 +542,12 @@ static int bmi160_chip_init(struct bmi160_data *data, bool use_spi) return 0; } -static void bmi160_chip_uninit(struct bmi160_data *data) +static void bmi160_chip_uninit(void *data) { - bmi160_set_mode(data, BMI160_GYRO, false); - bmi160_set_mode(data, BMI160_ACCEL, false); + struct bmi160_data *bmi_data = data; + + bmi160_set_mode(bmi_data, BMI160_GYRO, false); + bmi160_set_mode(bmi_data, BMI160_ACCEL, false); } int bmi160_core_probe(struct device *dev, struct regmap *regmap, @@ -567,6 +569,10 @@ int bmi160_core_probe(struct device *dev, struct regmap *regmap, if (ret < 0) return ret; + ret = devm_add_action_or_reset(dev, bmi160_chip_uninit, data); + if (ret < 0) + return ret; + if (!name && ACPI_HANDLE(dev)) name = bmi160_match_acpi_device(dev); @@ -577,35 +583,19 @@ int bmi160_core_probe(struct device *dev, struct regmap *regmap, indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &bmi160_info; - ret = iio_triggered_buffer_setup(indio_dev, NULL, - bmi160_trigger_handler, NULL); + ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL, + bmi160_trigger_handler, NULL); if (ret < 0) - goto uninit; + return ret; - ret = iio_device_register(indio_dev); + ret = devm_iio_device_register(dev, indio_dev); if (ret < 0) - goto buffer_cleanup; + return ret; return 0; -buffer_cleanup: - iio_triggered_buffer_cleanup(indio_dev); -uninit: - bmi160_chip_uninit(data); - return ret; } EXPORT_SYMBOL_GPL(bmi160_core_probe); -void bmi160_core_remove(struct device *dev) -{ - struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct bmi160_data *data = iio_priv(indio_dev); - - iio_device_unregister(indio_dev); - iio_triggered_buffer_cleanup(indio_dev); - bmi160_chip_uninit(data); -} -EXPORT_SYMBOL_GPL(bmi160_core_remove); - MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com"); MODULE_DESCRIPTION("Bosch BMI160 driver"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/imu/bmi160/bmi160_i2c.c b/drivers/iio/imu/bmi160/bmi160_i2c.c @@ -38,13 +38,6 @@ static int bmi160_i2c_probe(struct i2c_client *client, return bmi160_core_probe(&client->dev, regmap, name, false); } -static int bmi160_i2c_remove(struct i2c_client *client) -{ - bmi160_core_remove(&client->dev); - - return 0; -} - static const struct i2c_device_id bmi160_i2c_id[] = { {"bmi160", 0}, {} @@ -72,7 +65,6 @@ static struct i2c_driver bmi160_i2c_driver = { .of_match_table = of_match_ptr(bmi160_of_match), }, .probe = bmi160_i2c_probe, - .remove = bmi160_i2c_remove, .id_table = bmi160_i2c_id, }; module_i2c_driver(bmi160_i2c_driver); diff --git a/drivers/iio/imu/bmi160/bmi160_spi.c b/drivers/iio/imu/bmi160/bmi160_spi.c @@ -29,13 +29,6 @@ static int bmi160_spi_probe(struct spi_device *spi) return bmi160_core_probe(&spi->dev, regmap, id->name, true); } -static int bmi160_spi_remove(struct spi_device *spi) -{ - bmi160_core_remove(&spi->dev); - - return 0; -} - static const struct spi_device_id bmi160_spi_id[] = { {"bmi160", 0}, {} @@ -58,7 +51,6 @@ MODULE_DEVICE_TABLE(of, bmi160_of_match); static struct spi_driver bmi160_spi_driver = { .probe = bmi160_spi_probe, - .remove = bmi160_spi_remove, .id_table = bmi160_spi_id, .driver = { .acpi_match_table = ACPI_PTR(bmi160_acpi_match), diff --git a/drivers/iio/imu/st_lsm6dsx/Makefile b/drivers/iio/imu/st_lsm6dsx/Makefile @@ -1,4 +1,5 @@ -st_lsm6dsx-y := st_lsm6dsx_core.o st_lsm6dsx_buffer.o +st_lsm6dsx-y := st_lsm6dsx_core.o st_lsm6dsx_buffer.o \ + st_lsm6dsx_shub.o obj-$(CONFIG_IIO_ST_LSM6DSX) += st_lsm6dsx.o obj-$(CONFIG_IIO_ST_LSM6DSX_I2C) += st_lsm6dsx_i2c.o diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h @@ -43,6 +43,24 @@ enum st_lsm6dsx_hw_id { * ST_LSM6DSX_TAGGED_SAMPLE_SIZE) #define ST_LSM6DSX_SHIFT_VAL(val, mask) (((val) << __ffs(mask)) & (mask)) +#define ST_LSM6DSX_CHANNEL(chan_type, addr, mod, scan_idx) \ +{ \ + .type = chan_type, \ + .address = addr, \ + .modified = 1, \ + .channel2 = mod, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_SCALE), \ + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \ + .scan_index = scan_idx, \ + .scan_type = { \ + .sign = 's', \ + .realbits = 16, \ + .storagebits = 16, \ + .endianness = IIO_LE, \ + }, \ +} + struct st_lsm6dsx_reg { u8 addr; u8 mask; @@ -50,6 +68,28 @@ struct st_lsm6dsx_reg { struct st_lsm6dsx_hw; +struct st_lsm6dsx_odr { + u16 hz; + u8 val; +}; + +#define ST_LSM6DSX_ODR_LIST_SIZE 6 +struct st_lsm6dsx_odr_table_entry { + struct st_lsm6dsx_reg reg; + struct st_lsm6dsx_odr odr_avl[ST_LSM6DSX_ODR_LIST_SIZE]; +}; + +struct st_lsm6dsx_fs { + u32 gain; + u8 val; +}; + +#define ST_LSM6DSX_FS_LIST_SIZE 4 +struct st_lsm6dsx_fs_table_entry { + struct st_lsm6dsx_reg reg; + struct st_lsm6dsx_fs fs_avl[ST_LSM6DSX_FS_LIST_SIZE]; +}; + /** * struct st_lsm6dsx_fifo_ops - ST IMU FIFO settings * @read_fifo: Read FIFO callback. @@ -85,6 +125,70 @@ struct st_lsm6dsx_hw_ts_settings { }; /** + * struct st_lsm6dsx_shub_settings - ST IMU hw i2c controller settings + * @page_mux: register page mux info (addr + mask). + * @master_en: master config register info (addr + mask). + * @pullup_en: i2c controller pull-up register info (addr + mask). + * @aux_sens: aux sensor register info (addr + mask). + * @wr_once: write_once register info (addr + mask). + * @shub_out: sensor hub first output register info. + * @slv0_addr: slave0 address in secondary page. + * @dw_slv0_addr: slave0 write register address in secondary page. + * @batch_en: Enable/disable FIFO batching. + */ +struct st_lsm6dsx_shub_settings { + struct st_lsm6dsx_reg page_mux; + struct st_lsm6dsx_reg master_en; + struct st_lsm6dsx_reg pullup_en; + struct st_lsm6dsx_reg aux_sens; + struct st_lsm6dsx_reg wr_once; + u8 shub_out; + u8 slv0_addr; + u8 dw_slv0_addr; + u8 batch_en; +}; + +enum st_lsm6dsx_ext_sensor_id { + ST_LSM6DSX_ID_MAGN, +}; + +/** + * struct st_lsm6dsx_ext_dev_settings - i2c controller slave settings + * @i2c_addr: I2c slave address list. + * @wai: Wai address info. + * @id: external sensor id. + * @odr: Output data rate of the sensor [Hz]. + * @gain: Configured sensor sensitivity. + * @temp_comp: Temperature compensation register info (addr + mask). + * @pwr_table: Power on register info (addr + mask). + * @off_canc: Offset cancellation register info (addr + mask). + * @bdu: Block data update register info (addr + mask). + * @out: Output register info. + */ +struct st_lsm6dsx_ext_dev_settings { + u8 i2c_addr[2]; + struct { + u8 addr; + u8 val; + } wai; + enum st_lsm6dsx_ext_sensor_id id; + struct st_lsm6dsx_odr_table_entry odr_table; + struct st_lsm6dsx_fs_table_entry fs_table; + struct st_lsm6dsx_reg temp_comp; + struct { + struct st_lsm6dsx_reg reg; + u8 off_val; + u8 on_val; + } pwr_table; + struct st_lsm6dsx_reg off_canc; + struct st_lsm6dsx_reg bdu; + struct { + u8 addr; + u8 len; + } out; +}; + +/** * struct st_lsm6dsx_settings - ST IMU sensor settings * @wai: Sensor WhoAmI default value. * @max_fifo_size: Sensor max fifo length in FIFO words. @@ -93,6 +197,7 @@ struct st_lsm6dsx_hw_ts_settings { * @batch: List of FIFO batching register info (addr + mask). * @fifo_ops: Sensor hw FIFO parameters. * @ts_settings: Hw timer related settings. + * @shub_settings: i2c controller related settings. */ struct st_lsm6dsx_settings { u8 wai; @@ -102,11 +207,15 @@ struct st_lsm6dsx_settings { struct st_lsm6dsx_reg batch[ST_LSM6DSX_MAX_ID]; struct st_lsm6dsx_fifo_ops fifo_ops; struct st_lsm6dsx_hw_ts_settings ts_settings; + struct st_lsm6dsx_shub_settings shub_settings; }; enum st_lsm6dsx_sensor_id { - ST_LSM6DSX_ID_ACC, ST_LSM6DSX_ID_GYRO, + ST_LSM6DSX_ID_ACC, + ST_LSM6DSX_ID_EXT0, + ST_LSM6DSX_ID_EXT1, + ST_LSM6DSX_ID_EXT2, ST_LSM6DSX_ID_MAX, }; @@ -126,6 +235,7 @@ enum st_lsm6dsx_fifo_mode { * @sip: Number of samples in a given pattern. * @decimator: FIFO decimation factor. * @ts_ref: Sensor timestamp reference for hw one. + * @ext_info: Sensor settings if it is connected to i2c controller */ struct st_lsm6dsx_sensor { char name[32]; @@ -139,6 +249,11 @@ struct st_lsm6dsx_sensor { u8 sip; u8 decimator; s64 ts_ref; + + struct { + const struct st_lsm6dsx_ext_dev_settings *settings; + u8 addr; + } ext_info; }; /** @@ -148,6 +263,7 @@ struct st_lsm6dsx_sensor { * @irq: Device interrupt line (I2C or SPI). * @fifo_lock: Mutex to prevent concurrent access to the hw FIFO. * @conf_lock: Mutex to prevent concurrent FIFO configuration update. + * @page_lock: Mutex to prevent concurrent memory page configuration. * @fifo_mode: FIFO operating mode supported by the device. * @enable_mask: Enabled sensor bitmask. * @ts_sip: Total number of timestamp samples in a given pattern. @@ -163,6 +279,7 @@ struct st_lsm6dsx_hw { struct mutex fifo_lock; struct mutex conf_lock; + struct mutex page_lock; enum st_lsm6dsx_fifo_mode fifo_mode; u8 enable_mask; @@ -176,13 +293,15 @@ struct st_lsm6dsx_hw { const struct st_lsm6dsx_settings *settings; }; +static const unsigned long st_lsm6dsx_available_scan_masks[] = {0x7, 0x0}; extern const struct dev_pm_ops st_lsm6dsx_pm_ops; int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id, const char *name, struct regmap *regmap); -int st_lsm6dsx_sensor_enable(struct st_lsm6dsx_sensor *sensor); -int st_lsm6dsx_sensor_disable(struct st_lsm6dsx_sensor *sensor); +int st_lsm6dsx_sensor_set_enable(struct st_lsm6dsx_sensor *sensor, + bool enable); int st_lsm6dsx_fifo_setup(struct st_lsm6dsx_hw *hw); +int st_lsm6dsx_set_watermark(struct iio_dev *iio_dev, unsigned int val); int st_lsm6dsx_update_watermark(struct st_lsm6dsx_sensor *sensor, u16 watermark); int st_lsm6dsx_flush_fifo(struct st_lsm6dsx_hw *hw); @@ -191,5 +310,47 @@ int st_lsm6dsx_set_fifo_mode(struct st_lsm6dsx_hw *hw, int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw); int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw); int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val); +int st_lsm6dsx_shub_probe(struct st_lsm6dsx_hw *hw, const char *name); +int st_lsm6dsx_shub_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable); +int st_lsm6dsx_set_page(struct st_lsm6dsx_hw *hw, bool enable); + +static inline int +st_lsm6dsx_update_bits_locked(struct st_lsm6dsx_hw *hw, unsigned int addr, + unsigned int mask, unsigned int val) +{ + int err; + + mutex_lock(&hw->page_lock); + err = regmap_update_bits(hw->regmap, addr, mask, val); + mutex_unlock(&hw->page_lock); + + return err; +} + +static inline int +st_lsm6dsx_read_locked(struct st_lsm6dsx_hw *hw, unsigned int addr, + void *val, unsigned int len) +{ + int err; + + mutex_lock(&hw->page_lock); + err = regmap_bulk_read(hw->regmap, addr, val, len); + mutex_unlock(&hw->page_lock); + + return err; +} + +static inline int +st_lsm6dsx_write_locked(struct st_lsm6dsx_hw *hw, unsigned int addr, + unsigned int val) +{ + int err; + + mutex_lock(&hw->page_lock); + err = regmap_write(hw->regmap, addr, val); + mutex_unlock(&hw->page_lock); + + return err; +} #endif /* ST_LSM6DSX_H */ diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c @@ -68,6 +68,9 @@ enum st_lsm6dsx_fifo_tag { ST_LSM6DSX_GYRO_TAG = 0x01, ST_LSM6DSX_ACC_TAG = 0x02, ST_LSM6DSX_TS_TAG = 0x04, + ST_LSM6DSX_EXT0_TAG = 0x0f, + ST_LSM6DSX_EXT1_TAG = 0x10, + ST_LSM6DSX_EXT2_TAG = 0x11, }; static const @@ -102,6 +105,9 @@ static void st_lsm6dsx_get_max_min_odr(struct st_lsm6dsx_hw *hw, *max_odr = 0, *min_odr = ~0; for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) { + if (!hw->iio_devs[i]) + continue; + sensor = iio_priv(hw->iio_devs[i]); if (!(hw->enable_mask & BIT(sensor->id))) @@ -125,6 +131,9 @@ static int st_lsm6dsx_update_decimators(struct st_lsm6dsx_hw *hw) for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) { const struct st_lsm6dsx_reg *dec_reg; + if (!hw->iio_devs[i]) + continue; + sensor = iio_priv(hw->iio_devs[i]); /* update fifo decimators and sample in pattern */ if (hw->enable_mask & BIT(sensor->id)) { @@ -142,8 +151,9 @@ static int st_lsm6dsx_update_decimators(struct st_lsm6dsx_hw *hw) if (dec_reg->addr) { int val = ST_LSM6DSX_SHIFT_VAL(data, dec_reg->mask); - err = regmap_update_bits(hw->regmap, dec_reg->addr, - dec_reg->mask, val); + err = st_lsm6dsx_update_bits_locked(hw, dec_reg->addr, + dec_reg->mask, + val); if (err < 0) return err; } @@ -162,8 +172,8 @@ static int st_lsm6dsx_update_decimators(struct st_lsm6dsx_hw *hw) int val, ts_dec = !!hw->ts_sip; val = ST_LSM6DSX_SHIFT_VAL(ts_dec, ts_dec_reg->mask); - err = regmap_update_bits(hw->regmap, ts_dec_reg->addr, - ts_dec_reg->mask, val); + err = st_lsm6dsx_update_bits_locked(hw, ts_dec_reg->addr, + ts_dec_reg->mask, val); } return err; } @@ -171,12 +181,12 @@ static int st_lsm6dsx_update_decimators(struct st_lsm6dsx_hw *hw) int st_lsm6dsx_set_fifo_mode(struct st_lsm6dsx_hw *hw, enum st_lsm6dsx_fifo_mode fifo_mode) { + unsigned int data; int err; - err = regmap_update_bits(hw->regmap, ST_LSM6DSX_REG_FIFO_MODE_ADDR, - ST_LSM6DSX_FIFO_MODE_MASK, - FIELD_PREP(ST_LSM6DSX_FIFO_MODE_MASK, - fifo_mode)); + data = FIELD_PREP(ST_LSM6DSX_FIFO_MODE_MASK, fifo_mode); + err = st_lsm6dsx_update_bits_locked(hw, ST_LSM6DSX_REG_FIFO_MODE_ADDR, + ST_LSM6DSX_FIFO_MODE_MASK, data); if (err < 0) return err; @@ -207,15 +217,15 @@ static int st_lsm6dsx_set_fifo_odr(struct st_lsm6dsx_sensor *sensor, data = 0; } val = ST_LSM6DSX_SHIFT_VAL(data, batch_reg->mask); - return regmap_update_bits(hw->regmap, batch_reg->addr, - batch_reg->mask, val); + return st_lsm6dsx_update_bits_locked(hw, batch_reg->addr, + batch_reg->mask, val); } else { data = hw->enable_mask ? ST_LSM6DSX_MAX_FIFO_ODR_VAL : 0; - return regmap_update_bits(hw->regmap, - ST_LSM6DSX_REG_FIFO_MODE_ADDR, - ST_LSM6DSX_FIFO_ODR_MASK, - FIELD_PREP(ST_LSM6DSX_FIFO_ODR_MASK, - data)); + return st_lsm6dsx_update_bits_locked(hw, + ST_LSM6DSX_REG_FIFO_MODE_ADDR, + ST_LSM6DSX_FIFO_ODR_MASK, + FIELD_PREP(ST_LSM6DSX_FIFO_ODR_MASK, + data)); } } @@ -231,6 +241,9 @@ int st_lsm6dsx_update_watermark(struct st_lsm6dsx_sensor *sensor, u16 watermark) return 0; for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) { + if (!hw->iio_devs[i]) + continue; + cur_sensor = iio_priv(hw->iio_devs[i]); if (!(hw->enable_mask & BIT(cur_sensor->id))) @@ -246,19 +259,23 @@ int st_lsm6dsx_update_watermark(struct st_lsm6dsx_sensor *sensor, u16 watermark) fifo_watermark = (fifo_watermark / hw->sip) * hw->sip; fifo_watermark = fifo_watermark * hw->settings->fifo_ops.th_wl; + mutex_lock(&hw->page_lock); err = regmap_read(hw->regmap, hw->settings->fifo_ops.fifo_th.addr + 1, &data); if (err < 0) - return err; + goto out; fifo_th_mask = hw->settings->fifo_ops.fifo_th.mask; fifo_watermark = ((data << 8) & ~fifo_th_mask) | (fifo_watermark & fifo_th_mask); wdata = cpu_to_le16(fifo_watermark); - return regmap_bulk_write(hw->regmap, - hw->settings->fifo_ops.fifo_th.addr, - &wdata, sizeof(wdata)); + err = regmap_bulk_write(hw->regmap, + hw->settings->fifo_ops.fifo_th.addr, + &wdata, sizeof(wdata)); +out: + mutex_unlock(&hw->page_lock); + return err; } static int st_lsm6dsx_reset_hw_ts(struct st_lsm6dsx_hw *hw) @@ -267,12 +284,15 @@ static int st_lsm6dsx_reset_hw_ts(struct st_lsm6dsx_hw *hw) int i, err; /* reset hw ts counter */ - err = regmap_write(hw->regmap, ST_LSM6DSX_REG_TS_RESET_ADDR, - ST_LSM6DSX_TS_RESET_VAL); + err = st_lsm6dsx_write_locked(hw, ST_LSM6DSX_REG_TS_RESET_ADDR, + ST_LSM6DSX_TS_RESET_VAL); if (err < 0) return err; for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) { + if (!hw->iio_devs[i]) + continue; + sensor = iio_priv(hw->iio_devs[i]); /* * store enable buffer timestamp as reference for @@ -297,8 +317,8 @@ static inline int st_lsm6dsx_read_block(struct st_lsm6dsx_hw *hw, u8 addr, while (read_len < data_len) { word_len = min_t(unsigned int, data_len - read_len, max_word_len); - err = regmap_bulk_read(hw->regmap, addr, data + read_len, - word_len); + err = st_lsm6dsx_read_locked(hw, addr, data + read_len, + word_len); if (err < 0) return err; read_len += word_len; @@ -328,9 +348,9 @@ int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw) __le16 fifo_status; s64 ts = 0; - err = regmap_bulk_read(hw->regmap, - hw->settings->fifo_ops.fifo_diff.addr, - &fifo_status, sizeof(fifo_status)); + err = st_lsm6dsx_read_locked(hw, + hw->settings->fifo_ops.fifo_diff.addr, + &fifo_status, sizeof(fifo_status)); if (err < 0) { dev_err(hw->dev, "failed to read fifo status (err=%d)\n", err); @@ -436,6 +456,55 @@ int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw) return read_len; } +static int +st_lsm6dsx_push_tagged_data(struct st_lsm6dsx_hw *hw, u8 tag, + u8 *data, s64 ts) +{ + struct st_lsm6dsx_sensor *sensor; + struct iio_dev *iio_dev; + + /* + * EXT_TAG are managed in FIFO fashion so ST_LSM6DSX_EXT0_TAG + * corresponds to the first enabled channel, ST_LSM6DSX_EXT1_TAG + * to the second one and ST_LSM6DSX_EXT2_TAG to the last enabled + * channel + */ + switch (tag) { + case ST_LSM6DSX_GYRO_TAG: + iio_dev = hw->iio_devs[ST_LSM6DSX_ID_GYRO]; + break; + case ST_LSM6DSX_ACC_TAG: + iio_dev = hw->iio_devs[ST_LSM6DSX_ID_ACC]; + break; + case ST_LSM6DSX_EXT0_TAG: + if (hw->enable_mask & BIT(ST_LSM6DSX_ID_EXT0)) + iio_dev = hw->iio_devs[ST_LSM6DSX_ID_EXT0]; + else if (hw->enable_mask & BIT(ST_LSM6DSX_ID_EXT1)) + iio_dev = hw->iio_devs[ST_LSM6DSX_ID_EXT1]; + else + iio_dev = hw->iio_devs[ST_LSM6DSX_ID_EXT2]; + break; + case ST_LSM6DSX_EXT1_TAG: + if ((hw->enable_mask & BIT(ST_LSM6DSX_ID_EXT0)) && + (hw->enable_mask & BIT(ST_LSM6DSX_ID_EXT1))) + iio_dev = hw->iio_devs[ST_LSM6DSX_ID_EXT1]; + else + iio_dev = hw->iio_devs[ST_LSM6DSX_ID_EXT2]; + break; + case ST_LSM6DSX_EXT2_TAG: + iio_dev = hw->iio_devs[ST_LSM6DSX_ID_EXT2]; + break; + default: + return -EINVAL; + } + + sensor = iio_priv(iio_dev); + iio_push_to_buffers_with_timestamp(iio_dev, data, + ts + sensor->ts_ref); + + return 0; +} + /** * st_lsm6dsx_read_tagged_fifo() - LSM6DSO read FIFO routine * @hw: Pointer to instance of struct st_lsm6dsx_hw. @@ -455,9 +524,9 @@ int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw) __le16 fifo_status; s64 ts = 0; - err = regmap_bulk_read(hw->regmap, - hw->settings->fifo_ops.fifo_diff.addr, - &fifo_status, sizeof(fifo_status)); + err = st_lsm6dsx_read_locked(hw, + hw->settings->fifo_ops.fifo_diff.addr, + &fifo_status, sizeof(fifo_status)); if (err < 0) { dev_err(hw->dev, "failed to read fifo status (err=%d)\n", err); @@ -491,8 +560,7 @@ int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw) ST_LSM6DSX_SAMPLE_SIZE); tag = hw->buff[i] >> 3; - switch (tag) { - case ST_LSM6DSX_TS_TAG: + if (tag == ST_LSM6DSX_TS_TAG) { /* * hw timestamp is 4B long and it is stored * in FIFO according to this schema: @@ -509,19 +577,9 @@ int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw) if (!reset_ts && ts >= 0xffff0000) reset_ts = true; ts *= ST_LSM6DSX_TS_SENSITIVITY; - break; - case ST_LSM6DSX_GYRO_TAG: - iio_push_to_buffers_with_timestamp( - hw->iio_devs[ST_LSM6DSX_ID_GYRO], - iio_buff, gyro_sensor->ts_ref + ts); - break; - case ST_LSM6DSX_ACC_TAG: - iio_push_to_buffers_with_timestamp( - hw->iio_devs[ST_LSM6DSX_ID_ACC], - iio_buff, acc_sensor->ts_ref + ts); - break; - default: - break; + } else { + st_lsm6dsx_push_tagged_data(hw, tag, iio_buff, + ts); } } } @@ -562,19 +620,21 @@ static int st_lsm6dsx_update_fifo(struct iio_dev *iio_dev, bool enable) goto out; } - if (enable) { - err = st_lsm6dsx_sensor_enable(sensor); + if (sensor->id == ST_LSM6DSX_ID_EXT0 || + sensor->id == ST_LSM6DSX_ID_EXT1 || + sensor->id == ST_LSM6DSX_ID_EXT2) { + err = st_lsm6dsx_shub_set_enable(sensor, enable); if (err < 0) goto out; } else { - err = st_lsm6dsx_sensor_disable(sensor); + err = st_lsm6dsx_sensor_set_enable(sensor, enable); if (err < 0) goto out; - } - err = st_lsm6dsx_set_fifo_odr(sensor, enable); - if (err < 0) - goto out; + err = st_lsm6dsx_set_fifo_odr(sensor, enable); + if (err < 0) + goto out; + } err = st_lsm6dsx_update_decimators(hw); if (err < 0) @@ -690,6 +750,9 @@ int st_lsm6dsx_fifo_setup(struct st_lsm6dsx_hw *hw) } for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) { + if (!hw->iio_devs[i]) + continue; + buffer = devm_iio_kfifo_allocate(hw->dev); if (!buffer) return -ENOMEM; diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c @@ -56,6 +56,7 @@ #define ST_LSM6DSX_REG_WHOAMI_ADDR 0x0f #define ST_LSM6DSX_REG_RESET_ADDR 0x12 #define ST_LSM6DSX_REG_RESET_MASK BIT(0) +#define ST_LSM6DSX_REG_BOOT_MASK BIT(7) #define ST_LSM6DSX_REG_BDU_ADDR 0x12 #define ST_LSM6DSX_REG_BDU_MASK BIT(6) #define ST_LSM6DSX_REG_INT2_ON_INT1_ADDR 0x13 @@ -87,17 +88,6 @@ #define ST_LSM6DSX_GYRO_FS_1000_GAIN IIO_DEGREE_TO_RAD(35000) #define ST_LSM6DSX_GYRO_FS_2000_GAIN IIO_DEGREE_TO_RAD(70000) -struct st_lsm6dsx_odr { - u16 hz; - u8 val; -}; - -#define ST_LSM6DSX_ODR_LIST_SIZE 6 -struct st_lsm6dsx_odr_table_entry { - struct st_lsm6dsx_reg reg; - struct st_lsm6dsx_odr odr_avl[ST_LSM6DSX_ODR_LIST_SIZE]; -}; - static const struct st_lsm6dsx_odr_table_entry st_lsm6dsx_odr_table[] = { [ST_LSM6DSX_ID_ACC] = { .reg = { @@ -125,17 +115,6 @@ static const struct st_lsm6dsx_odr_table_entry st_lsm6dsx_odr_table[] = { } }; -struct st_lsm6dsx_fs { - u32 gain; - u8 val; -}; - -#define ST_LSM6DSX_FS_LIST_SIZE 4 -struct st_lsm6dsx_fs_table_entry { - struct st_lsm6dsx_reg reg; - struct st_lsm6dsx_fs fs_avl[ST_LSM6DSX_FS_LIST_SIZE]; -}; - static const struct st_lsm6dsx_fs_table_entry st_lsm6dsx_fs_table[] = { [ST_LSM6DSX_ID_ACC] = { .reg = { @@ -341,27 +320,35 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .mask = GENMASK(7, 6), }, }, + .shub_settings = { + .page_mux = { + .addr = 0x01, + .mask = BIT(6), + }, + .master_en = { + .addr = 0x14, + .mask = BIT(2), + }, + .pullup_en = { + .addr = 0x14, + .mask = BIT(3), + }, + .aux_sens = { + .addr = 0x14, + .mask = GENMASK(1, 0), + }, + .wr_once = { + .addr = 0x14, + .mask = BIT(6), + }, + .shub_out = 0x02, + .slv0_addr = 0x15, + .dw_slv0_addr = 0x21, + .batch_en = BIT(3), + } }, }; -#define ST_LSM6DSX_CHANNEL(chan_type, addr, mod, scan_idx) \ -{ \ - .type = chan_type, \ - .address = addr, \ - .modified = 1, \ - .channel2 = mod, \ - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ - BIT(IIO_CHAN_INFO_SCALE), \ - .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \ - .scan_index = scan_idx, \ - .scan_type = { \ - .sign = 's', \ - .realbits = 16, \ - .storagebits = 16, \ - .endianness = IIO_LE, \ - }, \ -} - static const struct iio_chan_spec st_lsm6dsx_acc_channels[] = { ST_LSM6DSX_CHANNEL(IIO_ACCEL, ST_LSM6DSX_REG_ACC_OUT_X_L_ADDR, IIO_MOD_X, 0), @@ -382,6 +369,21 @@ static const struct iio_chan_spec st_lsm6dsx_gyro_channels[] = { IIO_CHAN_SOFT_TIMESTAMP(3), }; +int st_lsm6dsx_set_page(struct st_lsm6dsx_hw *hw, bool enable) +{ + const struct st_lsm6dsx_shub_settings *hub_settings; + unsigned int data; + int err; + + hub_settings = &hw->settings->shub_settings; + data = ST_LSM6DSX_SHIFT_VAL(enable, hub_settings->page_mux.mask); + err = regmap_update_bits(hw->regmap, hub_settings->page_mux.addr, + hub_settings->page_mux.mask, data); + usleep_range(100, 150); + + return err; +} + static int st_lsm6dsx_check_whoami(struct st_lsm6dsx_hw *hw, int id) { int err, i, j, data; @@ -421,6 +423,7 @@ static int st_lsm6dsx_set_full_scale(struct st_lsm6dsx_sensor *sensor, { struct st_lsm6dsx_hw *hw = sensor->hw; const struct st_lsm6dsx_reg *reg; + unsigned int data; int i, err; u8 val; @@ -433,8 +436,8 @@ static int st_lsm6dsx_set_full_scale(struct st_lsm6dsx_sensor *sensor, val = st_lsm6dsx_fs_table[sensor->id].fs_avl[i].val; reg = &st_lsm6dsx_fs_table[sensor->id].reg; - err = regmap_update_bits(hw->regmap, reg->addr, reg->mask, - ST_LSM6DSX_SHIFT_VAL(val, reg->mask)); + data = ST_LSM6DSX_SHIFT_VAL(val, reg->mask); + err = st_lsm6dsx_update_bits_locked(hw, reg->addr, reg->mask, data); if (err < 0) return err; @@ -448,7 +451,11 @@ int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val) int i; for (i = 0; i < ST_LSM6DSX_ODR_LIST_SIZE; i++) - if (st_lsm6dsx_odr_table[sensor->id].odr_avl[i].hz == odr) + /* + * ext devices can run at different odr respect to + * accel sensor + */ + if (st_lsm6dsx_odr_table[sensor->id].odr_avl[i].hz >= odr) break; if (i == ST_LSM6DSX_ODR_LIST_SIZE) @@ -459,48 +466,86 @@ int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u16 odr, u8 *val) return 0; } -static int st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u16 odr) +static u16 st_lsm6dsx_check_odr_dependency(struct st_lsm6dsx_hw *hw, u16 odr, + enum st_lsm6dsx_sensor_id id) { - struct st_lsm6dsx_hw *hw = sensor->hw; - const struct st_lsm6dsx_reg *reg; - int err; - u8 val; - - err = st_lsm6dsx_check_odr(sensor, odr, &val); - if (err < 0) - return err; - - reg = &st_lsm6dsx_odr_table[sensor->id].reg; - return regmap_update_bits(hw->regmap, reg->addr, reg->mask, - ST_LSM6DSX_SHIFT_VAL(val, reg->mask)); + struct st_lsm6dsx_sensor *ref = iio_priv(hw->iio_devs[id]); + + if (odr > 0) { + if (hw->enable_mask & BIT(id)) + return max_t(u16, ref->odr, odr); + else + return odr; + } else { + return (hw->enable_mask & BIT(id)) ? ref->odr : 0; + } } -int st_lsm6dsx_sensor_enable(struct st_lsm6dsx_sensor *sensor) +static int st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u16 req_odr) { + struct st_lsm6dsx_sensor *ref_sensor = sensor; + struct st_lsm6dsx_hw *hw = sensor->hw; + const struct st_lsm6dsx_reg *reg; + unsigned int data; + u8 val = 0; int err; - err = st_lsm6dsx_set_odr(sensor, sensor->odr); - if (err < 0) - return err; + switch (sensor->id) { + case ST_LSM6DSX_ID_EXT0: + case ST_LSM6DSX_ID_EXT1: + case ST_LSM6DSX_ID_EXT2: + case ST_LSM6DSX_ID_ACC: { + u16 odr; + int i; + + /* + * i2c embedded controller relies on the accelerometer sensor as + * bus read/write trigger so we need to enable accel device + * at odr = max(accel_odr, ext_odr) in order to properly + * communicate with i2c slave devices + */ + ref_sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]); + for (i = ST_LSM6DSX_ID_ACC; i < ST_LSM6DSX_ID_MAX; i++) { + if (!hw->iio_devs[i] || i == sensor->id) + continue; + + odr = st_lsm6dsx_check_odr_dependency(hw, req_odr, i); + if (odr != req_odr) + /* device already configured */ + return 0; + } + break; + } + default: + break; + } - sensor->hw->enable_mask |= BIT(sensor->id); + if (req_odr > 0) { + err = st_lsm6dsx_check_odr(ref_sensor, req_odr, &val); + if (err < 0) + return err; + } - return 0; + reg = &st_lsm6dsx_odr_table[ref_sensor->id].reg; + data = ST_LSM6DSX_SHIFT_VAL(val, reg->mask); + return st_lsm6dsx_update_bits_locked(hw, reg->addr, reg->mask, data); } -int st_lsm6dsx_sensor_disable(struct st_lsm6dsx_sensor *sensor) +int st_lsm6dsx_sensor_set_enable(struct st_lsm6dsx_sensor *sensor, + bool enable) { struct st_lsm6dsx_hw *hw = sensor->hw; - const struct st_lsm6dsx_reg *reg; + u16 odr = enable ? sensor->odr : 0; int err; - reg = &st_lsm6dsx_odr_table[sensor->id].reg; - err = regmap_update_bits(hw->regmap, reg->addr, reg->mask, - ST_LSM6DSX_SHIFT_VAL(0, reg->mask)); + err = st_lsm6dsx_set_odr(sensor, odr); if (err < 0) return err; - sensor->hw->enable_mask &= ~BIT(sensor->id); + if (enable) + hw->enable_mask |= BIT(sensor->id); + else + hw->enable_mask &= ~BIT(sensor->id); return 0; } @@ -512,18 +557,18 @@ static int st_lsm6dsx_read_oneshot(struct st_lsm6dsx_sensor *sensor, int err, delay; __le16 data; - err = st_lsm6dsx_sensor_enable(sensor); + err = st_lsm6dsx_sensor_set_enable(sensor, true); if (err < 0) return err; delay = 1000000 / sensor->odr; usleep_range(delay, 2 * delay); - err = regmap_bulk_read(hw->regmap, addr, &data, sizeof(data)); + err = st_lsm6dsx_read_locked(hw, addr, &data, sizeof(data)); if (err < 0) return err; - st_lsm6dsx_sensor_disable(sensor); + st_lsm6dsx_sensor_set_enable(sensor, false); *val = (s16)le16_to_cpu(data); @@ -596,7 +641,7 @@ static int st_lsm6dsx_write_raw(struct iio_dev *iio_dev, return err; } -static int st_lsm6dsx_set_watermark(struct iio_dev *iio_dev, unsigned int val) +int st_lsm6dsx_set_watermark(struct iio_dev *iio_dev, unsigned int val) { struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); struct st_lsm6dsx_hw *hw = sensor->hw; @@ -692,8 +737,6 @@ static const struct iio_info st_lsm6dsx_gyro_info = { .hwfifo_set_watermark = st_lsm6dsx_set_watermark, }; -static const unsigned long st_lsm6dsx_available_scan_masks[] = {0x7, 0x0}; - static int st_lsm6dsx_of_get_drdy_pin(struct st_lsm6dsx_hw *hw, int *drdy_pin) { struct device_node *np = hw->dev->of_node; @@ -732,6 +775,51 @@ static int st_lsm6dsx_get_drdy_reg(struct st_lsm6dsx_hw *hw, u8 *drdy_reg) return err; } +static int st_lsm6dsx_init_shub(struct st_lsm6dsx_hw *hw) +{ + const struct st_lsm6dsx_shub_settings *hub_settings; + struct device_node *np = hw->dev->of_node; + struct st_sensors_platform_data *pdata; + unsigned int data; + int err = 0; + + hub_settings = &hw->settings->shub_settings; + + pdata = (struct st_sensors_platform_data *)hw->dev->platform_data; + if ((np && of_property_read_bool(np, "st,pullups")) || + (pdata && pdata->pullups)) { + err = st_lsm6dsx_set_page(hw, true); + if (err < 0) + return err; + + data = ST_LSM6DSX_SHIFT_VAL(1, hub_settings->pullup_en.mask); + err = regmap_update_bits(hw->regmap, + hub_settings->pullup_en.addr, + hub_settings->pullup_en.mask, data); + + st_lsm6dsx_set_page(hw, false); + + if (err < 0) + return err; + } + + if (hub_settings->aux_sens.addr) { + /* configure aux sensors */ + err = st_lsm6dsx_set_page(hw, true); + if (err < 0) + return err; + + data = ST_LSM6DSX_SHIFT_VAL(3, hub_settings->aux_sens.mask); + err = regmap_update_bits(hw->regmap, + hub_settings->aux_sens.addr, + hub_settings->aux_sens.mask, data); + + st_lsm6dsx_set_page(hw, false); + } + + return err; +} + static int st_lsm6dsx_init_hw_timer(struct st_lsm6dsx_hw *hw) { const struct st_lsm6dsx_hw_ts_settings *ts_settings; @@ -775,12 +863,23 @@ static int st_lsm6dsx_init_device(struct st_lsm6dsx_hw *hw) u8 drdy_int_reg; int err; - err = regmap_write(hw->regmap, ST_LSM6DSX_REG_RESET_ADDR, - ST_LSM6DSX_REG_RESET_MASK); + /* device sw reset */ + err = regmap_update_bits(hw->regmap, ST_LSM6DSX_REG_RESET_ADDR, + ST_LSM6DSX_REG_RESET_MASK, + FIELD_PREP(ST_LSM6DSX_REG_RESET_MASK, 1)); + if (err < 0) + return err; + + msleep(50); + + /* reload trimming parameter */ + err = regmap_update_bits(hw->regmap, ST_LSM6DSX_REG_RESET_ADDR, + ST_LSM6DSX_REG_BOOT_MASK, + FIELD_PREP(ST_LSM6DSX_REG_BOOT_MASK, 1)); if (err < 0) return err; - msleep(200); + msleep(50); /* enable Block Data Update */ err = regmap_update_bits(hw->regmap, ST_LSM6DSX_REG_BDU_ADDR, @@ -801,6 +900,10 @@ static int st_lsm6dsx_init_device(struct st_lsm6dsx_hw *hw) if (err < 0) return err; + err = st_lsm6dsx_init_shub(hw); + if (err < 0) + return err; + return st_lsm6dsx_init_hw_timer(hw); } @@ -854,6 +957,7 @@ static struct iio_dev *st_lsm6dsx_alloc_iiodev(struct st_lsm6dsx_hw *hw, int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id, const char *name, struct regmap *regmap) { + const struct st_lsm6dsx_shub_settings *hub_settings; struct st_lsm6dsx_hw *hw; int i, err; @@ -865,6 +969,7 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id, const char *name, mutex_init(&hw->fifo_lock); mutex_init(&hw->conf_lock); + mutex_init(&hw->page_lock); hw->buff = devm_kzalloc(dev, ST_LSM6DSX_BUFF_SIZE, GFP_KERNEL); if (!hw->buff) @@ -878,7 +983,7 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id, const char *name, if (err < 0) return err; - for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) { + for (i = 0; i < ST_LSM6DSX_ID_EXT0; i++) { hw->iio_devs[i] = st_lsm6dsx_alloc_iiodev(hw, i, name); if (!hw->iio_devs[i]) return -ENOMEM; @@ -888,6 +993,13 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id, const char *name, if (err < 0) return err; + hub_settings = &hw->settings->shub_settings; + if (hub_settings->master_en.addr) { + err = st_lsm6dsx_shub_probe(hw, name); + if (err < 0) + return err; + } + if (hw->irq > 0) { err = st_lsm6dsx_fifo_setup(hw); if (err < 0) @@ -895,6 +1007,9 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id, const char *name, } for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) { + if (!hw->iio_devs[i]) + continue; + err = devm_iio_device_register(hw->dev, hw->iio_devs[i]); if (err) return err; @@ -909,16 +1024,21 @@ static int __maybe_unused st_lsm6dsx_suspend(struct device *dev) struct st_lsm6dsx_hw *hw = dev_get_drvdata(dev); struct st_lsm6dsx_sensor *sensor; const struct st_lsm6dsx_reg *reg; + unsigned int data; int i, err = 0; for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) { + if (!hw->iio_devs[i]) + continue; + sensor = iio_priv(hw->iio_devs[i]); if (!(hw->enable_mask & BIT(sensor->id))) continue; reg = &st_lsm6dsx_odr_table[sensor->id].reg; - err = regmap_update_bits(hw->regmap, reg->addr, reg->mask, - ST_LSM6DSX_SHIFT_VAL(0, reg->mask)); + data = ST_LSM6DSX_SHIFT_VAL(0, reg->mask); + err = st_lsm6dsx_update_bits_locked(hw, reg->addr, reg->mask, + data); if (err < 0) return err; } @@ -936,6 +1056,9 @@ static int __maybe_unused st_lsm6dsx_resume(struct device *dev) int i, err = 0; for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) { + if (!hw->iio_devs[i]) + continue; + sensor = iio_priv(hw->iio_devs[i]); if (!(hw->enable_mask & BIT(sensor->id))) continue; diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c @@ -0,0 +1,779 @@ +/* + * STMicroelectronics st_lsm6dsx i2c controller driver + * + * i2c controller embedded in lsm6dx series can connect up to four + * slave devices using accelerometer sensor as trigger for i2c + * read/write operations. Current implementation relies on SLV0 channel + * for slave configuration and SLV{1,2,3} to read data and push them into + * the hw FIFO + * + * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> +#include <linux/bitfield.h> + +#include "st_lsm6dsx.h" + +#define ST_LSM6DSX_MAX_SLV_NUM 3 +#define ST_LSM6DSX_SLV_ADDR(n, base) ((base) + (n) * 3) +#define ST_LSM6DSX_SLV_SUB_ADDR(n, base) ((base) + 1 + (n) * 3) +#define ST_LSM6DSX_SLV_CONFIG(n, base) ((base) + 2 + (n) * 3) + +#define ST_LS6DSX_READ_OP_MASK GENMASK(2, 0) + +static const struct st_lsm6dsx_ext_dev_settings st_lsm6dsx_ext_dev_table[] = { + /* LIS2MDL */ + { + .i2c_addr = { 0x1e }, + .wai = { + .addr = 0x4f, + .val = 0x40, + }, + .id = ST_LSM6DSX_ID_MAGN, + .odr_table = { + .reg = { + .addr = 0x60, + .mask = GENMASK(3, 2), + }, + .odr_avl[0] = { 10, 0x0 }, + .odr_avl[1] = { 20, 0x1 }, + .odr_avl[2] = { 50, 0x2 }, + .odr_avl[3] = { 100, 0x3 }, + }, + .fs_table = { + .fs_avl[0] = { + .gain = 1500, + .val = 0x0, + }, /* 1500 uG/LSB */ + }, + .temp_comp = { + .addr = 0x60, + .mask = BIT(7), + }, + .pwr_table = { + .reg = { + .addr = 0x60, + .mask = GENMASK(1, 0), + }, + .off_val = 0x2, + .on_val = 0x0, + }, + .off_canc = { + .addr = 0x61, + .mask = BIT(1), + }, + .bdu = { + .addr = 0x62, + .mask = BIT(4), + }, + .out = { + .addr = 0x68, + .len = 6, + }, + }, +}; + +static void st_lsm6dsx_shub_wait_complete(struct st_lsm6dsx_hw *hw) +{ + struct st_lsm6dsx_sensor *sensor; + + sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]); + msleep((2000U / sensor->odr) + 1); +} + +/** + * st_lsm6dsx_shub_read_reg - read i2c controller register + * + * Read st_lsm6dsx i2c controller register + */ +static int st_lsm6dsx_shub_read_reg(struct st_lsm6dsx_hw *hw, u8 addr, + u8 *data, int len) +{ + const struct st_lsm6dsx_shub_settings *hub_settings; + int err; + + mutex_lock(&hw->page_lock); + + hub_settings = &hw->settings->shub_settings; + err = st_lsm6dsx_set_page(hw, true); + if (err < 0) + goto out; + + err = regmap_bulk_read(hw->regmap, addr, data, len); + + st_lsm6dsx_set_page(hw, false); +out: + mutex_unlock(&hw->page_lock); + + return err; +} + +/** + * st_lsm6dsx_shub_write_reg - write i2c controller register + * + * Write st_lsm6dsx i2c controller register + */ +static int st_lsm6dsx_shub_write_reg(struct st_lsm6dsx_hw *hw, u8 addr, + u8 *data, int len) +{ + int err; + + mutex_lock(&hw->page_lock); + err = st_lsm6dsx_set_page(hw, true); + if (err < 0) + goto out; + + err = regmap_bulk_write(hw->regmap, addr, data, len); + + st_lsm6dsx_set_page(hw, false); +out: + mutex_unlock(&hw->page_lock); + + return err; +} + +static int +st_lsm6dsx_shub_write_reg_with_mask(struct st_lsm6dsx_hw *hw, u8 addr, + u8 mask, u8 val) +{ + int err; + + mutex_lock(&hw->page_lock); + err = st_lsm6dsx_set_page(hw, true); + if (err < 0) + goto out; + + err = regmap_update_bits(hw->regmap, addr, mask, val); + + st_lsm6dsx_set_page(hw, false); +out: + mutex_unlock(&hw->page_lock); + + return err; +} + +static int st_lsm6dsx_shub_master_enable(struct st_lsm6dsx_sensor *sensor, + bool enable) +{ + const struct st_lsm6dsx_shub_settings *hub_settings; + struct st_lsm6dsx_hw *hw = sensor->hw; + unsigned int data; + int err; + + /* enable acc sensor as trigger */ + err = st_lsm6dsx_sensor_set_enable(sensor, enable); + if (err < 0) + return err; + + mutex_lock(&hw->page_lock); + + hub_settings = &hw->settings->shub_settings; + err = st_lsm6dsx_set_page(hw, true); + if (err < 0) + goto out; + + data = ST_LSM6DSX_SHIFT_VAL(enable, hub_settings->master_en.mask); + err = regmap_update_bits(hw->regmap, hub_settings->master_en.addr, + hub_settings->master_en.mask, data); + + st_lsm6dsx_set_page(hw, false); +out: + mutex_unlock(&hw->page_lock); + + return err; +} + +/** + * st_lsm6dsx_shub_read - read data from slave device register + * + * Read data from slave device register. SLV0 is used for + * one-shot read operation + */ +static int +st_lsm6dsx_shub_read(struct st_lsm6dsx_sensor *sensor, u8 addr, + u8 *data, int len) +{ + const struct st_lsm6dsx_shub_settings *hub_settings; + struct st_lsm6dsx_hw *hw = sensor->hw; + u8 config[3], slv_addr; + int err; + + hub_settings = &hw->settings->shub_settings; + slv_addr = ST_LSM6DSX_SLV_ADDR(0, hub_settings->slv0_addr); + + config[0] = (sensor->ext_info.addr << 1) | 1; + config[1] = addr; + config[2] = len & ST_LS6DSX_READ_OP_MASK; + + err = st_lsm6dsx_shub_write_reg(hw, slv_addr, config, + sizeof(config)); + if (err < 0) + return err; + + err = st_lsm6dsx_shub_master_enable(sensor, true); + if (err < 0) + return err; + + st_lsm6dsx_shub_wait_complete(hw); + + err = st_lsm6dsx_shub_read_reg(hw, hub_settings->shub_out, data, + len & ST_LS6DSX_READ_OP_MASK); + + st_lsm6dsx_shub_master_enable(sensor, false); + + memset(config, 0, sizeof(config)); + return st_lsm6dsx_shub_write_reg(hw, slv_addr, config, + sizeof(config)); +} + +/** + * st_lsm6dsx_shub_write - write data to slave device register + * + * Write data from slave device register. SLV0 is used for + * one-shot write operation + */ +static int +st_lsm6dsx_shub_write(struct st_lsm6dsx_sensor *sensor, u8 addr, + u8 *data, int len) +{ + const struct st_lsm6dsx_shub_settings *hub_settings; + struct st_lsm6dsx_hw *hw = sensor->hw; + u8 config[2], slv_addr; + int err, i; + + hub_settings = &hw->settings->shub_settings; + if (hub_settings->wr_once.addr) { + unsigned int data; + + data = ST_LSM6DSX_SHIFT_VAL(1, hub_settings->wr_once.mask); + err = st_lsm6dsx_shub_write_reg_with_mask(hw, + hub_settings->wr_once.addr, + hub_settings->wr_once.mask, + data); + if (err < 0) + return err; + } + + slv_addr = ST_LSM6DSX_SLV_ADDR(0, hub_settings->slv0_addr); + config[0] = sensor->ext_info.addr << 1; + for (i = 0 ; i < len; i++) { + config[1] = addr + i; + + err = st_lsm6dsx_shub_write_reg(hw, slv_addr, config, + sizeof(config)); + if (err < 0) + return err; + + err = st_lsm6dsx_shub_write_reg(hw, hub_settings->dw_slv0_addr, + &data[i], 1); + if (err < 0) + return err; + + err = st_lsm6dsx_shub_master_enable(sensor, true); + if (err < 0) + return err; + + st_lsm6dsx_shub_wait_complete(hw); + + st_lsm6dsx_shub_master_enable(sensor, false); + } + + memset(config, 0, sizeof(config)); + return st_lsm6dsx_shub_write_reg(hw, slv_addr, config, sizeof(config)); +} + +static int +st_lsm6dsx_shub_write_with_mask(struct st_lsm6dsx_sensor *sensor, + u8 addr, u8 mask, u8 val) +{ + int err; + u8 data; + + err = st_lsm6dsx_shub_read(sensor, addr, &data, sizeof(data)); + if (err < 0) + return err; + + data = ((data & ~mask) | (val << __ffs(mask) & mask)); + + return st_lsm6dsx_shub_write(sensor, addr, &data, sizeof(data)); +} + +static int +st_lsm6dsx_shub_get_odr_val(struct st_lsm6dsx_sensor *sensor, + u16 odr, u16 *val) +{ + const struct st_lsm6dsx_ext_dev_settings *settings; + int i; + + settings = sensor->ext_info.settings; + for (i = 0; i < ST_LSM6DSX_ODR_LIST_SIZE; i++) + if (settings->odr_table.odr_avl[i].hz == odr) + break; + + if (i == ST_LSM6DSX_ODR_LIST_SIZE) + return -EINVAL; + + *val = settings->odr_table.odr_avl[i].val; + return 0; +} + +static int +st_lsm6dsx_shub_set_odr(struct st_lsm6dsx_sensor *sensor, u16 odr) +{ + const struct st_lsm6dsx_ext_dev_settings *settings; + u16 val; + int err; + + err = st_lsm6dsx_shub_get_odr_val(sensor, odr, &val); + if (err < 0) + return err; + + settings = sensor->ext_info.settings; + return st_lsm6dsx_shub_write_with_mask(sensor, + settings->odr_table.reg.addr, + settings->odr_table.reg.mask, + val); +} + +/* use SLV{1,2,3} for FIFO read operations */ +static int +st_lsm6dsx_shub_config_channels(struct st_lsm6dsx_sensor *sensor, + bool enable) +{ + const struct st_lsm6dsx_shub_settings *hub_settings; + const struct st_lsm6dsx_ext_dev_settings *settings; + u8 config[9] = {}, enable_mask, slv_addr; + struct st_lsm6dsx_hw *hw = sensor->hw; + struct st_lsm6dsx_sensor *cur_sensor; + int i, j = 0; + + hub_settings = &hw->settings->shub_settings; + if (enable) + enable_mask = hw->enable_mask | BIT(sensor->id); + else + enable_mask = hw->enable_mask & ~BIT(sensor->id); + + for (i = ST_LSM6DSX_ID_EXT0; i <= ST_LSM6DSX_ID_EXT2; i++) { + if (!hw->iio_devs[i]) + continue; + + cur_sensor = iio_priv(hw->iio_devs[i]); + if (!(enable_mask & BIT(cur_sensor->id))) + continue; + + settings = cur_sensor->ext_info.settings; + config[j] = (sensor->ext_info.addr << 1) | 1; + config[j + 1] = settings->out.addr; + config[j + 2] = (settings->out.len & ST_LS6DSX_READ_OP_MASK) | + hub_settings->batch_en; + j += 3; + } + + slv_addr = ST_LSM6DSX_SLV_ADDR(1, hub_settings->slv0_addr); + return st_lsm6dsx_shub_write_reg(hw, slv_addr, config, + sizeof(config)); +} + +int st_lsm6dsx_shub_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable) +{ + const struct st_lsm6dsx_ext_dev_settings *settings; + int err; + + err = st_lsm6dsx_shub_config_channels(sensor, enable); + if (err < 0) + return err; + + settings = sensor->ext_info.settings; + if (enable) { + err = st_lsm6dsx_shub_set_odr(sensor, sensor->odr); + if (err < 0) + return err; + } else { + err = st_lsm6dsx_shub_write_with_mask(sensor, + settings->odr_table.reg.addr, + settings->odr_table.reg.mask, 0); + if (err < 0) + return err; + } + + if (settings->pwr_table.reg.addr) { + u8 val; + + val = enable ? settings->pwr_table.on_val + : settings->pwr_table.off_val; + err = st_lsm6dsx_shub_write_with_mask(sensor, + settings->pwr_table.reg.addr, + settings->pwr_table.reg.mask, val); + if (err < 0) + return err; + } + + return st_lsm6dsx_shub_master_enable(sensor, enable); +} + +static int +st_lsm6dsx_shub_read_oneshot(struct st_lsm6dsx_sensor *sensor, + struct iio_chan_spec const *ch, + int *val) +{ + int err, delay, len; + u8 data[4]; + + err = st_lsm6dsx_shub_set_enable(sensor, true); + if (err < 0) + return err; + + delay = 1000000 / sensor->odr; + usleep_range(delay, 2 * delay); + + len = min_t(int, sizeof(data), ch->scan_type.realbits >> 3); + err = st_lsm6dsx_shub_read(sensor, ch->address, data, len); + + st_lsm6dsx_shub_set_enable(sensor, false); + + if (err < 0) + return err; + + switch (len) { + case 2: + *val = (s16)le16_to_cpu(*((__le16 *)data)); + break; + default: + return -EINVAL; + } + + return IIO_VAL_INT; +} + +static int +st_lsm6dsx_shub_read_raw(struct iio_dev *iio_dev, + struct iio_chan_spec const *ch, + int *val, int *val2, long mask) +{ + struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); + int ret; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + ret = iio_device_claim_direct_mode(iio_dev); + if (ret) + break; + + ret = st_lsm6dsx_shub_read_oneshot(sensor, ch, val); + iio_device_release_direct_mode(iio_dev); + break; + case IIO_CHAN_INFO_SAMP_FREQ: + *val = sensor->odr; + ret = IIO_VAL_INT; + break; + case IIO_CHAN_INFO_SCALE: + *val = 0; + *val2 = sensor->gain; + ret = IIO_VAL_INT_PLUS_MICRO; + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int +st_lsm6dsx_shub_write_raw(struct iio_dev *iio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); + int err; + + err = iio_device_claim_direct_mode(iio_dev); + if (err) + return err; + + switch (mask) { + case IIO_CHAN_INFO_SAMP_FREQ: { + u16 data; + + err = st_lsm6dsx_shub_get_odr_val(sensor, val, &data); + if (!err) + sensor->odr = val; + break; + } + default: + err = -EINVAL; + break; + } + + iio_device_release_direct_mode(iio_dev); + + return err; +} + +static ssize_t +st_lsm6dsx_shub_sampling_freq_avail(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct st_lsm6dsx_sensor *sensor = iio_priv(dev_get_drvdata(dev)); + const struct st_lsm6dsx_ext_dev_settings *settings; + int i, len = 0; + + settings = sensor->ext_info.settings; + for (i = 0; i < ST_LSM6DSX_ODR_LIST_SIZE; i++) { + u16 val = settings->odr_table.odr_avl[i].hz; + + if (val > 0) + len += scnprintf(buf + len, PAGE_SIZE - len, "%d ", + val); + } + buf[len - 1] = '\n'; + + return len; +} + +static ssize_t st_lsm6dsx_shub_scale_avail(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct st_lsm6dsx_sensor *sensor = iio_priv(dev_get_drvdata(dev)); + const struct st_lsm6dsx_ext_dev_settings *settings; + int i, len = 0; + + settings = sensor->ext_info.settings; + for (i = 0; i < ST_LSM6DSX_FS_LIST_SIZE; i++) { + u16 val = settings->fs_table.fs_avl[i].gain; + + if (val > 0) + len += scnprintf(buf + len, PAGE_SIZE - len, "0.%06u ", + val); + } + buf[len - 1] = '\n'; + + return len; +} + +static IIO_DEV_ATTR_SAMP_FREQ_AVAIL(st_lsm6dsx_shub_sampling_freq_avail); +static IIO_DEVICE_ATTR(in_scale_available, 0444, + st_lsm6dsx_shub_scale_avail, NULL, 0); +static struct attribute *st_lsm6dsx_ext_attributes[] = { + &iio_dev_attr_sampling_frequency_available.dev_attr.attr, + &iio_dev_attr_in_scale_available.dev_attr.attr, + NULL, +}; + +static const struct attribute_group st_lsm6dsx_ext_attribute_group = { + .attrs = st_lsm6dsx_ext_attributes, +}; + +static const struct iio_info st_lsm6dsx_ext_info = { + .attrs = &st_lsm6dsx_ext_attribute_group, + .read_raw = st_lsm6dsx_shub_read_raw, + .write_raw = st_lsm6dsx_shub_write_raw, + .hwfifo_set_watermark = st_lsm6dsx_set_watermark, +}; + +static struct iio_dev * +st_lsm6dsx_shub_alloc_iiodev(struct st_lsm6dsx_hw *hw, + enum st_lsm6dsx_sensor_id id, + const struct st_lsm6dsx_ext_dev_settings *info, + u8 i2c_addr, const char *name) +{ + struct iio_chan_spec *ext_channels; + struct st_lsm6dsx_sensor *sensor; + struct iio_dev *iio_dev; + + iio_dev = devm_iio_device_alloc(hw->dev, sizeof(*sensor)); + if (!iio_dev) + return NULL; + + iio_dev->modes = INDIO_DIRECT_MODE; + iio_dev->dev.parent = hw->dev; + iio_dev->info = &st_lsm6dsx_ext_info; + + sensor = iio_priv(iio_dev); + sensor->id = id; + sensor->hw = hw; + sensor->odr = info->odr_table.odr_avl[0].hz; + sensor->gain = info->fs_table.fs_avl[0].gain; + sensor->ext_info.settings = info; + sensor->ext_info.addr = i2c_addr; + sensor->watermark = 1; + + switch (info->id) { + case ST_LSM6DSX_ID_MAGN: { + const struct iio_chan_spec magn_channels[] = { + ST_LSM6DSX_CHANNEL(IIO_MAGN, info->out.addr, + IIO_MOD_X, 0), + ST_LSM6DSX_CHANNEL(IIO_MAGN, info->out.addr + 2, + IIO_MOD_Y, 1), + ST_LSM6DSX_CHANNEL(IIO_MAGN, info->out.addr + 4, + IIO_MOD_Z, 2), + IIO_CHAN_SOFT_TIMESTAMP(3), + }; + + ext_channels = devm_kzalloc(hw->dev, sizeof(magn_channels), + GFP_KERNEL); + if (!ext_channels) + return NULL; + + memcpy(ext_channels, magn_channels, sizeof(magn_channels)); + iio_dev->available_scan_masks = st_lsm6dsx_available_scan_masks; + iio_dev->channels = ext_channels; + iio_dev->num_channels = ARRAY_SIZE(magn_channels); + + scnprintf(sensor->name, sizeof(sensor->name), "%s_magn", + name); + break; + } + default: + return NULL; + } + iio_dev->name = sensor->name; + + return iio_dev; +} + +static int st_lsm6dsx_shub_init_device(struct st_lsm6dsx_sensor *sensor) +{ + const struct st_lsm6dsx_ext_dev_settings *settings; + int err; + + settings = sensor->ext_info.settings; + if (settings->bdu.addr) { + err = st_lsm6dsx_shub_write_with_mask(sensor, + settings->bdu.addr, + settings->bdu.mask, 1); + if (err < 0) + return err; + } + + if (settings->temp_comp.addr) { + err = st_lsm6dsx_shub_write_with_mask(sensor, + settings->temp_comp.addr, + settings->temp_comp.mask, 1); + if (err < 0) + return err; + } + + if (settings->off_canc.addr) { + err = st_lsm6dsx_shub_write_with_mask(sensor, + settings->off_canc.addr, + settings->off_canc.mask, 1); + if (err < 0) + return err; + } + + return 0; +} + +static int +st_lsm6dsx_shub_check_wai(struct st_lsm6dsx_hw *hw, u8 *i2c_addr, + const struct st_lsm6dsx_ext_dev_settings *settings) +{ + const struct st_lsm6dsx_shub_settings *hub_settings; + struct st_lsm6dsx_sensor *sensor; + u8 config[3], data, slv_addr; + bool found = false; + int i, err; + + hub_settings = &hw->settings->shub_settings; + slv_addr = ST_LSM6DSX_SLV_ADDR(0, hub_settings->slv0_addr); + sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]); + + for (i = 0; i < ARRAY_SIZE(settings->i2c_addr); i++) { + if (!settings->i2c_addr[i]) + continue; + + /* read wai slave register */ + config[0] = (settings->i2c_addr[i] << 1) | 0x1; + config[1] = settings->wai.addr; + config[2] = 0x1; + + err = st_lsm6dsx_shub_write_reg(hw, slv_addr, config, + sizeof(config)); + if (err < 0) + return err; + + err = st_lsm6dsx_shub_master_enable(sensor, true); + if (err < 0) + return err; + + st_lsm6dsx_shub_wait_complete(hw); + + err = st_lsm6dsx_shub_read_reg(hw, + hub_settings->shub_out, + &data, sizeof(data)); + + st_lsm6dsx_shub_master_enable(sensor, false); + + if (err < 0) + return err; + + if (data != settings->wai.val) + continue; + + *i2c_addr = settings->i2c_addr[i]; + found = true; + break; + } + + /* reset SLV0 channel */ + memset(config, 0, sizeof(config)); + err = st_lsm6dsx_shub_write_reg(hw, slv_addr, config, + sizeof(config)); + if (err < 0) + return err; + + return found ? 0 : -ENODEV; +} + +int st_lsm6dsx_shub_probe(struct st_lsm6dsx_hw *hw, const char *name) +{ + enum st_lsm6dsx_sensor_id id = ST_LSM6DSX_ID_EXT0; + struct st_lsm6dsx_sensor *sensor; + int err, i, num_ext_dev = 0; + u8 i2c_addr = 0; + + for (i = 0; i < ARRAY_SIZE(st_lsm6dsx_ext_dev_table); i++) { + err = st_lsm6dsx_shub_check_wai(hw, &i2c_addr, + &st_lsm6dsx_ext_dev_table[i]); + if (err == -ENODEV) + continue; + else if (err < 0) + return err; + + hw->iio_devs[id] = st_lsm6dsx_shub_alloc_iiodev(hw, id, + &st_lsm6dsx_ext_dev_table[i], + i2c_addr, name); + if (!hw->iio_devs[id]) + return -ENOMEM; + + sensor = iio_priv(hw->iio_devs[id]); + err = st_lsm6dsx_shub_init_device(sensor); + if (err < 0) + return err; + + if (++num_ext_dev >= ST_LSM6DSX_MAX_SLV_NUM) + break; + id++; + } + + return 0; +} diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c @@ -1671,6 +1671,9 @@ int __iio_device_register(struct iio_dev *indio_dev, struct module *this_mod) if (ret < 0) return ret; + if (!indio_dev->info) + return -EINVAL; + /* configure elements for the chrdev */ indio_dev->dev.devt = MKDEV(MAJOR(iio_devt), indio_dev->id); diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig @@ -460,6 +460,19 @@ config VCNL4000 To compile this driver as a module, choose M here: the module will be called vcnl4000. +config VCNL4035 + tristate "VCNL4035 combined ALS and proximity sensor" + select IIO_TRIGGERED_BUFFER + select REGMAP_I2C + depends on I2C + help + Say Y here if you want to build a driver for the Vishay VCNL4035, + combined ambient light (ALS) and proximity sensor. Currently only ALS + function is available. + + To compile this driver as a module, choose M here: the + module will be called vcnl4035. + config VEML6070 tristate "VEML6070 UV A light sensor" depends on I2C diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile @@ -45,6 +45,7 @@ obj-$(CONFIG_TSL2772) += tsl2772.o obj-$(CONFIG_TSL4531) += tsl4531.o obj-$(CONFIG_US5182D) += us5182d.o obj-$(CONFIG_VCNL4000) += vcnl4000.o +obj-$(CONFIG_VCNL4035) += vcnl4035.o obj-$(CONFIG_VEML6070) += veml6070.o obj-$(CONFIG_VL6180) += vl6180.o obj-$(CONFIG_ZOPT2201) += zopt2201.o diff --git a/drivers/iio/light/vcnl4035.c b/drivers/iio/light/vcnl4035.c @@ -0,0 +1,676 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * VCNL4035 Ambient Light and Proximity Sensor - 7-bit I2C slave address 0x60 + * + * Copyright (c) 2018, DENX Software Engineering GmbH + * Author: Parthiban Nallathambi <pn@denx.de> + * + * TODO: Proximity + */ +#include <linux/bitops.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> + +#include <linux/iio/buffer.h> +#include <linux/iio/events.h> +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> +#include <linux/iio/trigger.h> +#include <linux/iio/trigger_consumer.h> +#include <linux/iio/triggered_buffer.h> + +#define VCNL4035_DRV_NAME "vcnl4035" +#define VCNL4035_IRQ_NAME "vcnl4035_event" +#define VCNL4035_REGMAP_NAME "vcnl4035_regmap" + +/* Device registers */ +#define VCNL4035_ALS_CONF 0x00 +#define VCNL4035_ALS_THDH 0x01 +#define VCNL4035_ALS_THDL 0x02 +#define VCNL4035_ALS_DATA 0x0B +#define VCNL4035_WHITE_DATA 0x0C +#define VCNL4035_INT_FLAG 0x0D +#define VCNL4035_DEV_ID 0x0E + +/* Register masks */ +#define VCNL4035_MODE_ALS_MASK BIT(0) +#define VCNL4035_MODE_ALS_WHITE_CHAN BIT(8) +#define VCNL4035_MODE_ALS_INT_MASK BIT(1) +#define VCNL4035_ALS_IT_MASK GENMASK(7, 5) +#define VCNL4035_ALS_PERS_MASK GENMASK(3, 2) +#define VCNL4035_INT_ALS_IF_H_MASK BIT(12) +#define VCNL4035_INT_ALS_IF_L_MASK BIT(13) + +/* Default values */ +#define VCNL4035_MODE_ALS_ENABLE BIT(0) +#define VCNL4035_MODE_ALS_DISABLE 0x00 +#define VCNL4035_MODE_ALS_INT_ENABLE BIT(1) +#define VCNL4035_MODE_ALS_INT_DISABLE 0 +#define VCNL4035_DEV_ID_VAL 0x80 +#define VCNL4035_ALS_IT_DEFAULT 0x01 +#define VCNL4035_ALS_PERS_DEFAULT 0x00 +#define VCNL4035_ALS_THDH_DEFAULT 5000 +#define VCNL4035_ALS_THDL_DEFAULT 100 +#define VCNL4035_SLEEP_DELAY_MS 2000 + +struct vcnl4035_data { + struct i2c_client *client; + struct regmap *regmap; + unsigned int als_it_val; + unsigned int als_persistence; + unsigned int als_thresh_low; + unsigned int als_thresh_high; + struct iio_trigger *drdy_trigger0; +}; + +static inline bool vcnl4035_is_triggered(struct vcnl4035_data *data) +{ + int ret; + int reg; + + ret = regmap_read(data->regmap, VCNL4035_INT_FLAG, &reg); + if (ret < 0) + return false; + + return !!(reg & + (VCNL4035_INT_ALS_IF_H_MASK | VCNL4035_INT_ALS_IF_L_MASK)); +} + +static irqreturn_t vcnl4035_drdy_irq_thread(int irq, void *private) +{ + struct iio_dev *indio_dev = private; + struct vcnl4035_data *data = iio_priv(indio_dev); + + if (vcnl4035_is_triggered(data)) { + iio_push_event(indio_dev, IIO_UNMOD_EVENT_CODE(IIO_LIGHT, + 0, + IIO_EV_TYPE_THRESH, + IIO_EV_DIR_EITHER), + iio_get_time_ns(indio_dev)); + iio_trigger_poll_chained(data->drdy_trigger0); + return IRQ_HANDLED; + } + + return IRQ_NONE; +} + +/* Triggered buffer */ +static irqreturn_t vcnl4035_trigger_consumer_handler(int irq, void *p) +{ + struct iio_poll_func *pf = p; + struct iio_dev *indio_dev = pf->indio_dev; + struct vcnl4035_data *data = iio_priv(indio_dev); + u8 buffer[ALIGN(sizeof(u16), sizeof(s64)) + sizeof(s64)]; + int ret; + + ret = regmap_read(data->regmap, VCNL4035_ALS_DATA, (int *)buffer); + if (ret < 0) { + dev_err(&data->client->dev, + "Trigger consumer can't read from sensor.\n"); + goto fail_read; + } + iio_push_to_buffers_with_timestamp(indio_dev, buffer, + iio_get_time_ns(indio_dev)); + +fail_read: + iio_trigger_notify_done(indio_dev->trig); + + return IRQ_HANDLED; +} + +static int vcnl4035_als_drdy_set_state(struct iio_trigger *trigger, + bool enable_drdy) +{ + struct iio_dev *indio_dev = iio_trigger_get_drvdata(trigger); + struct vcnl4035_data *data = iio_priv(indio_dev); + int val = enable_drdy ? VCNL4035_MODE_ALS_INT_ENABLE : + VCNL4035_MODE_ALS_INT_DISABLE; + + return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, + VCNL4035_MODE_ALS_INT_MASK, + val); +} + +static const struct iio_trigger_ops vcnl4035_trigger_ops = { + .validate_device = iio_trigger_validate_own_device, + .set_trigger_state = vcnl4035_als_drdy_set_state, +}; + +static int vcnl4035_set_pm_runtime_state(struct vcnl4035_data *data, bool on) +{ + int ret; + struct device *dev = &data->client->dev; + + if (on) { + ret = pm_runtime_get_sync(dev); + if (ret < 0) + pm_runtime_put_noidle(dev); + } else { + pm_runtime_mark_last_busy(dev); + ret = pm_runtime_put_autosuspend(dev); + } + + return ret; +} + +/* + * Device IT INT Time (ms) Scale (lux/step) + * 000 50 0.064 + * 001 100 0.032 + * 010 200 0.016 + * 100 400 0.008 + * 101 - 111 800 0.004 + * Values are proportional, so ALS INT is selected for input due to + * simplicity reason. Integration time value and scaling is + * calculated based on device INT value + * + * Raw value needs to be scaled using ALS steps + */ +static int vcnl4035_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + struct vcnl4035_data *data = iio_priv(indio_dev); + int ret; + int raw_data; + unsigned int reg; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + ret = vcnl4035_set_pm_runtime_state(data, true); + if (ret < 0) + return ret; + + ret = iio_device_claim_direct_mode(indio_dev); + if (!ret) { + if (chan->channel) + reg = VCNL4035_ALS_DATA; + else + reg = VCNL4035_WHITE_DATA; + ret = regmap_read(data->regmap, reg, &raw_data); + iio_device_release_direct_mode(indio_dev); + if (!ret) { + *val = raw_data; + ret = IIO_VAL_INT; + } + } + vcnl4035_set_pm_runtime_state(data, false); + return ret; + case IIO_CHAN_INFO_INT_TIME: + *val = 50; + if (data->als_it_val) + *val = data->als_it_val * 100; + return IIO_VAL_INT; + case IIO_CHAN_INFO_SCALE: + *val = 64; + if (!data->als_it_val) + *val2 = 1000; + else + *val2 = data->als_it_val * 2 * 1000; + return IIO_VAL_FRACTIONAL; + default: + return -EINVAL; + } +} + +static int vcnl4035_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + int ret; + struct vcnl4035_data *data = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_INT_TIME: + if (val <= 0 || val > 800) + return -EINVAL; + + ret = vcnl4035_set_pm_runtime_state(data, true); + if (ret < 0) + return ret; + + ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, + VCNL4035_ALS_IT_MASK, + val / 100); + if (!ret) + data->als_it_val = val / 100; + + vcnl4035_set_pm_runtime_state(data, false); + return ret; + default: + return -EINVAL; + } +} + +/* No direct ABI for persistence and threshold, so eventing */ +static int vcnl4035_read_thresh(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, enum iio_event_type type, + enum iio_event_direction dir, enum iio_event_info info, + int *val, int *val2) +{ + struct vcnl4035_data *data = iio_priv(indio_dev); + + switch (info) { + case IIO_EV_INFO_VALUE: + switch (dir) { + case IIO_EV_DIR_RISING: + *val = data->als_thresh_high; + return IIO_VAL_INT; + case IIO_EV_DIR_FALLING: + *val = data->als_thresh_low; + return IIO_VAL_INT; + default: + return -EINVAL; + } + break; + case IIO_EV_INFO_PERIOD: + *val = data->als_persistence; + return IIO_VAL_INT; + default: + return -EINVAL; + } + +} + +static int vcnl4035_write_thresh(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, enum iio_event_type type, + enum iio_event_direction dir, enum iio_event_info info, int val, + int val2) +{ + struct vcnl4035_data *data = iio_priv(indio_dev); + int ret; + + switch (info) { + case IIO_EV_INFO_VALUE: + /* 16 bit threshold range 0 - 65535 */ + if (val < 0 || val > 65535) + return -EINVAL; + if (dir == IIO_EV_DIR_RISING) { + if (val < data->als_thresh_low) + return -EINVAL; + ret = regmap_write(data->regmap, VCNL4035_ALS_THDH, + val); + if (ret) + return ret; + data->als_thresh_high = val; + } else { + if (val > data->als_thresh_high) + return -EINVAL; + ret = regmap_write(data->regmap, VCNL4035_ALS_THDL, + val); + if (ret) + return ret; + data->als_thresh_low = val; + } + return ret; + case IIO_EV_INFO_PERIOD: + /* allow only 1 2 4 8 as persistence value */ + if (val < 0 || val > 8 || hweight8(val) != 1) + return -EINVAL; + ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, + VCNL4035_ALS_PERS_MASK, val); + if (!ret) + data->als_persistence = val; + return ret; + default: + return -EINVAL; + } +} + +static IIO_CONST_ATTR_INT_TIME_AVAIL("50 100 200 400 800"); + +static struct attribute *vcnl4035_attributes[] = { + &iio_const_attr_integration_time_available.dev_attr.attr, + NULL, +}; + +static const struct attribute_group vcnl4035_attribute_group = { + .attrs = vcnl4035_attributes, +}; + +static const struct iio_info vcnl4035_info = { + .read_raw = vcnl4035_read_raw, + .write_raw = vcnl4035_write_raw, + .read_event_value = vcnl4035_read_thresh, + .write_event_value = vcnl4035_write_thresh, + .attrs = &vcnl4035_attribute_group, +}; + +static const struct iio_event_spec vcnl4035_event_spec[] = { + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_RISING, + .mask_separate = BIT(IIO_EV_INFO_VALUE), + }, { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_FALLING, + .mask_separate = BIT(IIO_EV_INFO_VALUE), + }, { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_EITHER, + .mask_separate = BIT(IIO_EV_INFO_PERIOD), + }, +}; + +enum vcnl4035_scan_index_order { + VCNL4035_CHAN_INDEX_LIGHT, + VCNL4035_CHAN_INDEX_WHITE_LED, +}; + +static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = { + .validate_scan_mask = &iio_validate_scan_mask_onehot, +}; + +static const struct iio_chan_spec vcnl4035_channels[] = { + { + .type = IIO_LIGHT, + .channel = 0, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_INT_TIME) | + BIT(IIO_CHAN_INFO_SCALE), + .event_spec = vcnl4035_event_spec, + .num_event_specs = ARRAY_SIZE(vcnl4035_event_spec), + .scan_index = VCNL4035_CHAN_INDEX_LIGHT, + .scan_type = { + .sign = 'u', + .realbits = 16, + .storagebits = 16, + .endianness = IIO_LE, + }, + }, + { + .type = IIO_INTENSITY, + .channel = 1, + .modified = 1, + .channel2 = IIO_MOD_LIGHT_BOTH, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .scan_index = VCNL4035_CHAN_INDEX_WHITE_LED, + .scan_type = { + .sign = 'u', + .realbits = 16, + .storagebits = 16, + .endianness = IIO_LE, + }, + }, +}; + +static int vcnl4035_set_als_power_state(struct vcnl4035_data *data, u8 status) +{ + return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, + VCNL4035_MODE_ALS_MASK, + status); +} + +static int vcnl4035_init(struct vcnl4035_data *data) +{ + int ret; + int id; + + ret = regmap_read(data->regmap, VCNL4035_DEV_ID, &id); + if (ret < 0) { + dev_err(&data->client->dev, "Failed to read DEV_ID register\n"); + return ret; + } + + if (id != VCNL4035_DEV_ID_VAL) { + dev_err(&data->client->dev, "Wrong id, got %x, expected %x\n", + id, VCNL4035_DEV_ID_VAL); + return -ENODEV; + } + + ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE); + if (ret < 0) + return ret; + + /* ALS white channel enable */ + ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, + VCNL4035_MODE_ALS_WHITE_CHAN, + 1); + if (ret) { + dev_err(&data->client->dev, "set white channel enable %d\n", + ret); + return ret; + } + + /* set default integration time - 100 ms for ALS */ + ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, + VCNL4035_ALS_IT_MASK, + VCNL4035_ALS_IT_DEFAULT); + if (ret) { + dev_err(&data->client->dev, "set default ALS IT returned %d\n", + ret); + return ret; + } + data->als_it_val = VCNL4035_ALS_IT_DEFAULT; + + /* set default persistence time - 1 for ALS */ + ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, + VCNL4035_ALS_PERS_MASK, + VCNL4035_ALS_PERS_DEFAULT); + if (ret) { + dev_err(&data->client->dev, "set default PERS returned %d\n", + ret); + return ret; + } + data->als_persistence = VCNL4035_ALS_PERS_DEFAULT; + + /* set default HIGH threshold for ALS */ + ret = regmap_write(data->regmap, VCNL4035_ALS_THDH, + VCNL4035_ALS_THDH_DEFAULT); + if (ret) { + dev_err(&data->client->dev, "set default THDH returned %d\n", + ret); + return ret; + } + data->als_thresh_high = VCNL4035_ALS_THDH_DEFAULT; + + /* set default LOW threshold for ALS */ + ret = regmap_write(data->regmap, VCNL4035_ALS_THDL, + VCNL4035_ALS_THDL_DEFAULT); + if (ret) { + dev_err(&data->client->dev, "set default THDL returned %d\n", + ret); + return ret; + } + data->als_thresh_low = VCNL4035_ALS_THDL_DEFAULT; + + return 0; +} + +static bool vcnl4035_is_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case VCNL4035_ALS_CONF: + case VCNL4035_DEV_ID: + return false; + default: + return true; + } +} + +static const struct regmap_config vcnl4035_regmap_config = { + .name = VCNL4035_REGMAP_NAME, + .reg_bits = 8, + .val_bits = 16, + .max_register = VCNL4035_DEV_ID, + .cache_type = REGCACHE_RBTREE, + .volatile_reg = vcnl4035_is_volatile_reg, + .val_format_endian = REGMAP_ENDIAN_LITTLE, +}; + +static int vcnl4035_probe_trigger(struct iio_dev *indio_dev) +{ + int ret; + struct vcnl4035_data *data = iio_priv(indio_dev); + + data->drdy_trigger0 = devm_iio_trigger_alloc( + indio_dev->dev.parent, + "%s-dev%d", indio_dev->name, indio_dev->id); + if (!data->drdy_trigger0) + return -ENOMEM; + + data->drdy_trigger0->dev.parent = indio_dev->dev.parent; + data->drdy_trigger0->ops = &vcnl4035_trigger_ops; + iio_trigger_set_drvdata(data->drdy_trigger0, indio_dev); + ret = devm_iio_trigger_register(indio_dev->dev.parent, + data->drdy_trigger0); + if (ret) { + dev_err(&data->client->dev, "iio trigger register failed\n"); + return ret; + } + + /* Trigger setup */ + ret = devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev, + NULL, vcnl4035_trigger_consumer_handler, + &iio_triggered_buffer_setup_ops); + if (ret < 0) { + dev_err(&data->client->dev, "iio triggered buffer setup failed\n"); + return ret; + } + + /* IRQ to trigger mapping */ + ret = devm_request_threaded_irq(&data->client->dev, data->client->irq, + NULL, vcnl4035_drdy_irq_thread, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + VCNL4035_IRQ_NAME, indio_dev); + if (ret < 0) + dev_err(&data->client->dev, "request irq %d for trigger0 failed\n", + data->client->irq); + return ret; +} + +static int vcnl4035_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct vcnl4035_data *data; + struct iio_dev *indio_dev; + struct regmap *regmap; + int ret; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + regmap = devm_regmap_init_i2c(client, &vcnl4035_regmap_config); + if (IS_ERR(regmap)) { + dev_err(&client->dev, "regmap_init failed!\n"); + return PTR_ERR(regmap); + } + + data = iio_priv(indio_dev); + i2c_set_clientdata(client, indio_dev); + data->client = client; + data->regmap = regmap; + + indio_dev->dev.parent = &client->dev; + indio_dev->info = &vcnl4035_info; + indio_dev->name = VCNL4035_DRV_NAME; + indio_dev->channels = vcnl4035_channels; + indio_dev->num_channels = ARRAY_SIZE(vcnl4035_channels); + indio_dev->modes = INDIO_DIRECT_MODE; + + ret = vcnl4035_init(data); + if (ret < 0) { + dev_err(&client->dev, "vcnl4035 chip init failed\n"); + return ret; + } + + if (client->irq > 0) { + ret = vcnl4035_probe_trigger(indio_dev); + if (ret < 0) { + dev_err(&client->dev, "vcnl4035 unable init trigger\n"); + goto fail_poweroff; + } + } + + ret = pm_runtime_set_active(&client->dev); + if (ret < 0) + goto fail_poweroff; + + ret = iio_device_register(indio_dev); + if (ret < 0) + goto fail_poweroff; + + pm_runtime_enable(&client->dev); + pm_runtime_set_autosuspend_delay(&client->dev, VCNL4035_SLEEP_DELAY_MS); + pm_runtime_use_autosuspend(&client->dev); + + return 0; + +fail_poweroff: + vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE); + return ret; +} + +static int vcnl4035_remove(struct i2c_client *client) +{ + struct iio_dev *indio_dev = i2c_get_clientdata(client); + + pm_runtime_dont_use_autosuspend(&client->dev); + pm_runtime_disable(&client->dev); + iio_device_unregister(indio_dev); + pm_runtime_set_suspended(&client->dev); + + return vcnl4035_set_als_power_state(iio_priv(indio_dev), + VCNL4035_MODE_ALS_DISABLE); +} + +static int __maybe_unused vcnl4035_runtime_suspend(struct device *dev) +{ + struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); + struct vcnl4035_data *data = iio_priv(indio_dev); + int ret; + + ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE); + regcache_mark_dirty(data->regmap); + + return ret; +} + +static int __maybe_unused vcnl4035_runtime_resume(struct device *dev) +{ + struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); + struct vcnl4035_data *data = iio_priv(indio_dev); + int ret; + + regcache_sync(data->regmap); + ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE); + if (ret < 0) + return ret; + + /* wait for 1 ALS integration cycle */ + msleep(data->als_it_val * 100); + + return 0; +} + +static const struct dev_pm_ops vcnl4035_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) + SET_RUNTIME_PM_OPS(vcnl4035_runtime_suspend, + vcnl4035_runtime_resume, NULL) +}; + +static const struct of_device_id vcnl4035_of_match[] = { + { .compatible = "vishay,vcnl4035", }, + { } +}; +MODULE_DEVICE_TABLE(of, vcnl4035_of_match); + +static struct i2c_driver vcnl4035_driver = { + .driver = { + .name = VCNL4035_DRV_NAME, + .pm = &vcnl4035_pm_ops, + .of_match_table = vcnl4035_of_match, + }, + .probe = vcnl4035_probe, + .remove = vcnl4035_remove, +}; + +module_i2c_driver(vcnl4035_driver); + +MODULE_AUTHOR("Parthiban Nallathambi <pn@denx.de>"); +MODULE_DESCRIPTION("VCNL4035 Ambient Light Sensor driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/magnetometer/Kconfig b/drivers/iio/magnetometer/Kconfig @@ -175,4 +175,33 @@ config SENSORS_HMC5843_SPI - hmc5843_core (core functions) - hmc5843_spi (support for HMC5983) +config SENSORS_RM3100 + tristate + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + +config SENSORS_RM3100_I2C + tristate "PNI RM3100 3-Axis Magnetometer (I2C)" + depends on I2C + select SENSORS_RM3100 + select REGMAP_I2C + help + Say Y here to add support for the PNI RM3100 3-Axis Magnetometer. + + This driver can also be compiled as a module. + To compile this driver as a module, choose M here: the module + will be called rm3100-i2c. + +config SENSORS_RM3100_SPI + tristate "PNI RM3100 3-Axis Magnetometer (SPI)" + depends on SPI_MASTER + select SENSORS_RM3100 + select REGMAP_SPI + help + Say Y here to add support for the PNI RM3100 3-Axis Magnetometer. + + This driver can also be compiled as a module. + To compile this driver as a module, choose M here: the module + will be called rm3100-spi. + endmenu diff --git a/drivers/iio/magnetometer/Makefile b/drivers/iio/magnetometer/Makefile @@ -24,3 +24,7 @@ obj-$(CONFIG_IIO_ST_MAGN_SPI_3AXIS) += st_magn_spi.o obj-$(CONFIG_SENSORS_HMC5843) += hmc5843_core.o obj-$(CONFIG_SENSORS_HMC5843_I2C) += hmc5843_i2c.o obj-$(CONFIG_SENSORS_HMC5843_SPI) += hmc5843_spi.o + +obj-$(CONFIG_SENSORS_RM3100) += rm3100-core.o +obj-$(CONFIG_SENSORS_RM3100_I2C) += rm3100-i2c.o +obj-$(CONFIG_SENSORS_RM3100_SPI) += rm3100-spi.o diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c @@ -790,6 +790,7 @@ static const struct acpi_device_id ak_acpi_match[] = { {"INVN6500", AK8963}, {"AK009911", AK09911}, {"AK09911", AK09911}, + {"AKM9911", AK09911}, {"AK09912", AK09912}, { }, }; diff --git a/drivers/iio/magnetometer/rm3100-core.c b/drivers/iio/magnetometer/rm3100-core.c @@ -0,0 +1,616 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * PNI RM3100 3-axis geomagnetic sensor driver core. + * + * Copyright (C) 2018 Song Qiang <songqiang1304521@gmail.com> + * + * User Manual available at + * <https://www.pnicorp.com/download/rm3100-user-manual/> + * + * TODO: event generation, pm. + */ + +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/slab.h> + +#include <linux/iio/buffer.h> +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> +#include <linux/iio/trigger.h> +#include <linux/iio/triggered_buffer.h> +#include <linux/iio/trigger_consumer.h> + +#include "rm3100.h" + +/* Cycle Count Registers. */ +#define RM3100_REG_CC_X 0x05 +#define RM3100_REG_CC_Y 0x07 +#define RM3100_REG_CC_Z 0x09 + +/* Poll Measurement Mode register. */ +#define RM3100_REG_POLL 0x00 +#define RM3100_POLL_X BIT(4) +#define RM3100_POLL_Y BIT(5) +#define RM3100_POLL_Z BIT(6) + +/* Continuous Measurement Mode register. */ +#define RM3100_REG_CMM 0x01 +#define RM3100_CMM_START BIT(0) +#define RM3100_CMM_X BIT(4) +#define RM3100_CMM_Y BIT(5) +#define RM3100_CMM_Z BIT(6) + +/* TiMe Rate Configuration register. */ +#define RM3100_REG_TMRC 0x0B +#define RM3100_TMRC_OFFSET 0x92 + +/* Result Status register. */ +#define RM3100_REG_STATUS 0x34 +#define RM3100_STATUS_DRDY BIT(7) + +/* Measurement result registers. */ +#define RM3100_REG_MX2 0x24 +#define RM3100_REG_MY2 0x27 +#define RM3100_REG_MZ2 0x2a + +#define RM3100_W_REG_START RM3100_REG_POLL +#define RM3100_W_REG_END RM3100_REG_TMRC +#define RM3100_R_REG_START RM3100_REG_POLL +#define RM3100_R_REG_END RM3100_REG_STATUS +#define RM3100_V_REG_START RM3100_REG_POLL +#define RM3100_V_REG_END RM3100_REG_STATUS + +/* + * This is computed by hand, is the sum of channel storage bits and padding + * bits, which is 4+4+4+12=24 in here. + */ +#define RM3100_SCAN_BYTES 24 + +#define RM3100_CMM_AXIS_SHIFT 4 + +struct rm3100_data { + struct regmap *regmap; + struct completion measuring_done; + bool use_interrupt; + int conversion_time; + int scale; + u8 buffer[RM3100_SCAN_BYTES]; + struct iio_trigger *drdy_trig; + + /* + * This lock is for protecting the consistency of series of i2c + * operations, that is, to make sure a measurement process will + * not be interrupted by a set frequency operation, which should + * be taken where a series of i2c operation starts, released where + * the operation ends. + */ + struct mutex lock; +}; + +static const struct regmap_range rm3100_readable_ranges[] = { + regmap_reg_range(RM3100_R_REG_START, RM3100_R_REG_END), +}; + +const struct regmap_access_table rm3100_readable_table = { + .yes_ranges = rm3100_readable_ranges, + .n_yes_ranges = ARRAY_SIZE(rm3100_readable_ranges), +}; +EXPORT_SYMBOL_GPL(rm3100_readable_table); + +static const struct regmap_range rm3100_writable_ranges[] = { + regmap_reg_range(RM3100_W_REG_START, RM3100_W_REG_END), +}; + +const struct regmap_access_table rm3100_writable_table = { + .yes_ranges = rm3100_writable_ranges, + .n_yes_ranges = ARRAY_SIZE(rm3100_writable_ranges), +}; +EXPORT_SYMBOL_GPL(rm3100_writable_table); + +static const struct regmap_range rm3100_volatile_ranges[] = { + regmap_reg_range(RM3100_V_REG_START, RM3100_V_REG_END), +}; + +const struct regmap_access_table rm3100_volatile_table = { + .yes_ranges = rm3100_volatile_ranges, + .n_yes_ranges = ARRAY_SIZE(rm3100_volatile_ranges), +}; +EXPORT_SYMBOL_GPL(rm3100_volatile_table); + +static irqreturn_t rm3100_thread_fn(int irq, void *d) +{ + struct iio_dev *indio_dev = d; + struct rm3100_data *data = iio_priv(indio_dev); + + /* + * Write operation to any register or read operation + * to first byte of results will clear the interrupt. + */ + regmap_write(data->regmap, RM3100_REG_POLL, 0); + + return IRQ_HANDLED; +} + +static irqreturn_t rm3100_irq_handler(int irq, void *d) +{ + struct iio_dev *indio_dev = d; + struct rm3100_data *data = iio_priv(indio_dev); + + switch (indio_dev->currentmode) { + case INDIO_DIRECT_MODE: + complete(&data->measuring_done); + break; + case INDIO_BUFFER_TRIGGERED: + iio_trigger_poll(data->drdy_trig); + break; + default: + dev_err(indio_dev->dev.parent, + "device mode out of control, current mode: %d", + indio_dev->currentmode); + } + + return IRQ_WAKE_THREAD; +} + +static int rm3100_wait_measurement(struct rm3100_data *data) +{ + struct regmap *regmap = data->regmap; + unsigned int val; + int tries = 20; + int ret; + + /* + * A read cycle of 400kbits i2c bus is about 20us, plus the time + * used for scheduling, a read cycle of fast mode of this device + * can reach 1.7ms, it may be possible for data to arrive just + * after we check the RM3100_REG_STATUS. In this case, irq_handler is + * called before measuring_done is reinitialized, it will wait + * forever for data that has already been ready. + * Reinitialize measuring_done before looking up makes sure we + * will always capture interrupt no matter when it happens. + */ + if (data->use_interrupt) + reinit_completion(&data->measuring_done); + + ret = regmap_read(regmap, RM3100_REG_STATUS, &val); + if (ret < 0) + return ret; + + if ((val & RM3100_STATUS_DRDY) != RM3100_STATUS_DRDY) { + if (data->use_interrupt) { + ret = wait_for_completion_timeout(&data->measuring_done, + msecs_to_jiffies(data->conversion_time)); + if (!ret) + return -ETIMEDOUT; + } else { + do { + usleep_range(1000, 5000); + + ret = regmap_read(regmap, RM3100_REG_STATUS, + &val); + if (ret < 0) + return ret; + + if (val & RM3100_STATUS_DRDY) + break; + } while (--tries); + if (!tries) + return -ETIMEDOUT; + } + } + return 0; +} + +static int rm3100_read_mag(struct rm3100_data *data, int idx, int *val) +{ + struct regmap *regmap = data->regmap; + u8 buffer[3]; + int ret; + + mutex_lock(&data->lock); + ret = regmap_write(regmap, RM3100_REG_POLL, BIT(4 + idx)); + if (ret < 0) + goto unlock_return; + + ret = rm3100_wait_measurement(data); + if (ret < 0) + goto unlock_return; + + ret = regmap_bulk_read(regmap, RM3100_REG_MX2 + 3 * idx, buffer, 3); + if (ret < 0) + goto unlock_return; + mutex_unlock(&data->lock); + + *val = sign_extend32((buffer[0] << 16) | (buffer[1] << 8) | buffer[2], + 23); + + return IIO_VAL_INT; + +unlock_return: + mutex_unlock(&data->lock); + return ret; +} + +#define RM3100_CHANNEL(axis, idx) \ + { \ + .type = IIO_MAGN, \ + .modified = 1, \ + .channel2 = IIO_MOD_##axis, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ + BIT(IIO_CHAN_INFO_SAMP_FREQ), \ + .scan_index = idx, \ + .scan_type = { \ + .sign = 's', \ + .realbits = 24, \ + .storagebits = 32, \ + .shift = 8, \ + .endianness = IIO_BE, \ + }, \ + } + +static const struct iio_chan_spec rm3100_channels[] = { + RM3100_CHANNEL(X, 0), + RM3100_CHANNEL(Y, 1), + RM3100_CHANNEL(Z, 2), + IIO_CHAN_SOFT_TIMESTAMP(3), +}; + +static IIO_CONST_ATTR_SAMP_FREQ_AVAIL( + "600 300 150 75 37 18 9 4.5 2.3 1.2 0.6 0.3 0.015 0.075" +); + +static struct attribute *rm3100_attributes[] = { + &iio_const_attr_sampling_frequency_available.dev_attr.attr, + NULL, +}; + +static const struct attribute_group rm3100_attribute_group = { + .attrs = rm3100_attributes, +}; + +#define RM3100_SAMP_NUM 14 + +/* + * Frequency : rm3100_samp_rates[][0].rm3100_samp_rates[][1]Hz. + * Time between reading: rm3100_sam_rates[][2]ms. + * The first one is actually 1.7ms. + */ +static const int rm3100_samp_rates[RM3100_SAMP_NUM][3] = { + {600, 0, 2}, {300, 0, 3}, {150, 0, 7}, {75, 0, 13}, {37, 0, 27}, + {18, 0, 55}, {9, 0, 110}, {4, 500000, 220}, {2, 300000, 440}, + {1, 200000, 800}, {0, 600000, 1600}, {0, 300000, 3300}, + {0, 15000, 6700}, {0, 75000, 13000} +}; + +static int rm3100_get_samp_freq(struct rm3100_data *data, int *val, int *val2) +{ + unsigned int tmp; + int ret; + + mutex_lock(&data->lock); + ret = regmap_read(data->regmap, RM3100_REG_TMRC, &tmp); + mutex_unlock(&data->lock); + if (ret < 0) + return ret; + *val = rm3100_samp_rates[tmp - RM3100_TMRC_OFFSET][0]; + *val2 = rm3100_samp_rates[tmp - RM3100_TMRC_OFFSET][1]; + + return IIO_VAL_INT_PLUS_MICRO; +} + +static int rm3100_set_cycle_count(struct rm3100_data *data, int val) +{ + int ret; + u8 i; + + for (i = 0; i < 3; i++) { + ret = regmap_write(data->regmap, RM3100_REG_CC_X + 2 * i, val); + if (ret < 0) + return ret; + } + + /* + * The scale of this sensor depends on the cycle count value, these + * three values are corresponding to the cycle count value 50, 100, + * 200. scale = output / gain * 10^4. + */ + switch (val) { + case 50: + data->scale = 500; + break; + case 100: + data->scale = 263; + break; + /* + * case 200: + * This function will never be called by users' code, so here we + * assume that it will never get a wrong parameter. + */ + default: + data->scale = 133; + } + + return 0; +} + +static int rm3100_set_samp_freq(struct iio_dev *indio_dev, int val, int val2) +{ + struct rm3100_data *data = iio_priv(indio_dev); + struct regmap *regmap = data->regmap; + unsigned int cycle_count; + int ret; + int i; + + mutex_lock(&data->lock); + /* All cycle count registers use the same value. */ + ret = regmap_read(regmap, RM3100_REG_CC_X, &cycle_count); + if (ret < 0) + goto unlock_return; + + for (i = 0; i < RM3100_SAMP_NUM; i++) { + if (val == rm3100_samp_rates[i][0] && + val2 == rm3100_samp_rates[i][1]) + break; + } + if (i == RM3100_SAMP_NUM) { + ret = -EINVAL; + goto unlock_return; + } + + ret = regmap_write(regmap, RM3100_REG_TMRC, i + RM3100_TMRC_OFFSET); + if (ret < 0) + goto unlock_return; + + /* Checking if cycle count registers need changing. */ + if (val == 600 && cycle_count == 200) { + ret = rm3100_set_cycle_count(data, 100); + if (ret < 0) + goto unlock_return; + } else if (val != 600 && cycle_count == 100) { + ret = rm3100_set_cycle_count(data, 200); + if (ret < 0) + goto unlock_return; + } + + if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) { + /* Writing TMRC registers requires CMM reset. */ + ret = regmap_write(regmap, RM3100_REG_CMM, 0); + if (ret < 0) + goto unlock_return; + ret = regmap_write(data->regmap, RM3100_REG_CMM, + (*indio_dev->active_scan_mask & 0x7) << + RM3100_CMM_AXIS_SHIFT | RM3100_CMM_START); + if (ret < 0) + goto unlock_return; + } + mutex_unlock(&data->lock); + + data->conversion_time = rm3100_samp_rates[i][2] * 2; + return 0; + +unlock_return: + mutex_unlock(&data->lock); + return ret; +} + +static int rm3100_read_raw(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + int *val, int *val2, long mask) +{ + struct rm3100_data *data = iio_priv(indio_dev); + int ret; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + ret = iio_device_claim_direct_mode(indio_dev); + if (ret < 0) + return ret; + + ret = rm3100_read_mag(data, chan->scan_index, val); + iio_device_release_direct_mode(indio_dev); + + return ret; + case IIO_CHAN_INFO_SCALE: + *val = 0; + *val2 = data->scale; + + return IIO_VAL_INT_PLUS_MICRO; + case IIO_CHAN_INFO_SAMP_FREQ: + return rm3100_get_samp_freq(data, val, val2); + default: + return -EINVAL; + } +} + +static int rm3100_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_SAMP_FREQ: + return rm3100_set_samp_freq(indio_dev, val, val2); + default: + return -EINVAL; + } +} + +static const struct iio_info rm3100_info = { + .attrs = &rm3100_attribute_group, + .read_raw = rm3100_read_raw, + .write_raw = rm3100_write_raw, +}; + +static int rm3100_buffer_preenable(struct iio_dev *indio_dev) +{ + struct rm3100_data *data = iio_priv(indio_dev); + + /* Starting channels enabled. */ + return regmap_write(data->regmap, RM3100_REG_CMM, + (*indio_dev->active_scan_mask & 0x7) << RM3100_CMM_AXIS_SHIFT | + RM3100_CMM_START); +} + +static int rm3100_buffer_postdisable(struct iio_dev *indio_dev) +{ + struct rm3100_data *data = iio_priv(indio_dev); + + return regmap_write(data->regmap, RM3100_REG_CMM, 0); +} + +static const struct iio_buffer_setup_ops rm3100_buffer_ops = { + .preenable = rm3100_buffer_preenable, + .postenable = iio_triggered_buffer_postenable, + .predisable = iio_triggered_buffer_predisable, + .postdisable = rm3100_buffer_postdisable, +}; + +static irqreturn_t rm3100_trigger_handler(int irq, void *p) +{ + struct iio_poll_func *pf = p; + struct iio_dev *indio_dev = pf->indio_dev; + unsigned long scan_mask = *indio_dev->active_scan_mask; + unsigned int mask_len = indio_dev->masklength; + struct rm3100_data *data = iio_priv(indio_dev); + struct regmap *regmap = data->regmap; + int ret, i, bit; + + mutex_lock(&data->lock); + switch (scan_mask) { + case BIT(0) | BIT(1) | BIT(2): + ret = regmap_bulk_read(regmap, RM3100_REG_MX2, data->buffer, 9); + mutex_unlock(&data->lock); + if (ret < 0) + goto done; + /* Convert XXXYYYZZZxxx to XXXxYYYxZZZx. x for paddings. */ + for (i = 2; i > 0; i--) + memmove(data->buffer + i * 4, data->buffer + i * 3, 3); + break; + case BIT(0) | BIT(1): + ret = regmap_bulk_read(regmap, RM3100_REG_MX2, data->buffer, 6); + mutex_unlock(&data->lock); + if (ret < 0) + goto done; + memmove(data->buffer + 4, data->buffer + 3, 3); + break; + case BIT(1) | BIT(2): + ret = regmap_bulk_read(regmap, RM3100_REG_MY2, data->buffer, 6); + mutex_unlock(&data->lock); + if (ret < 0) + goto done; + memmove(data->buffer + 4, data->buffer + 3, 3); + break; + case BIT(0) | BIT(2): + ret = regmap_bulk_read(regmap, RM3100_REG_MX2, data->buffer, 9); + mutex_unlock(&data->lock); + if (ret < 0) + goto done; + memmove(data->buffer + 4, data->buffer + 6, 3); + break; + default: + for_each_set_bit(bit, &scan_mask, mask_len) { + ret = regmap_bulk_read(regmap, RM3100_REG_MX2 + 3 * bit, + data->buffer, 3); + if (ret < 0) { + mutex_unlock(&data->lock); + goto done; + } + } + mutex_unlock(&data->lock); + } + /* + * Always using the same buffer so that we wouldn't need to set the + * paddings to 0 in case of leaking any data. + */ + iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, + pf->timestamp); +done: + iio_trigger_notify_done(indio_dev->trig); + + return IRQ_HANDLED; +} + +int rm3100_common_probe(struct device *dev, struct regmap *regmap, int irq) +{ + struct iio_dev *indio_dev; + struct rm3100_data *data; + unsigned int tmp; + int ret; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + data = iio_priv(indio_dev); + data->regmap = regmap; + + mutex_init(&data->lock); + + indio_dev->dev.parent = dev; + indio_dev->name = "rm3100"; + indio_dev->info = &rm3100_info; + indio_dev->channels = rm3100_channels; + indio_dev->num_channels = ARRAY_SIZE(rm3100_channels); + indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_TRIGGERED; + indio_dev->currentmode = INDIO_DIRECT_MODE; + + if (!irq) + data->use_interrupt = false; + else { + data->use_interrupt = true; + + init_completion(&data->measuring_done); + ret = devm_request_threaded_irq(dev, + irq, + rm3100_irq_handler, + rm3100_thread_fn, + IRQF_TRIGGER_HIGH | + IRQF_ONESHOT, + indio_dev->name, + indio_dev); + if (ret < 0) { + dev_err(dev, "request irq line failed.\n"); + return ret; + } + + data->drdy_trig = devm_iio_trigger_alloc(dev, "%s-drdy%d", + indio_dev->name, + indio_dev->id); + if (!data->drdy_trig) + return -ENOMEM; + + data->drdy_trig->dev.parent = dev; + ret = devm_iio_trigger_register(dev, data->drdy_trig); + if (ret < 0) + return ret; + } + + ret = devm_iio_triggered_buffer_setup(dev, indio_dev, + &iio_pollfunc_store_time, + rm3100_trigger_handler, + &rm3100_buffer_ops); + if (ret < 0) + return ret; + + ret = regmap_read(regmap, RM3100_REG_TMRC, &tmp); + if (ret < 0) + return ret; + /* Initializing max wait time, which is double conversion time. */ + data->conversion_time = rm3100_samp_rates[tmp - RM3100_TMRC_OFFSET][2] + * 2; + + /* Cycle count values may not be what we want. */ + if ((tmp - RM3100_TMRC_OFFSET) == 0) + rm3100_set_cycle_count(data, 100); + else + rm3100_set_cycle_count(data, 200); + + return devm_iio_device_register(dev, indio_dev); +} +EXPORT_SYMBOL_GPL(rm3100_common_probe); + +MODULE_AUTHOR("Song Qiang <songqiang1304521@gmail.com>"); +MODULE_DESCRIPTION("PNI RM3100 3-axis magnetometer i2c driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/magnetometer/rm3100-i2c.c b/drivers/iio/magnetometer/rm3100-i2c.c @@ -0,0 +1,54 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Support for PNI RM3100 3-axis geomagnetic sensor on a i2c bus. + * + * Copyright (C) 2018 Song Qiang <songqiang1304521@gmail.com> + * + * i2c slave address: 0x20 + SA1 << 1 + SA0. + */ + +#include <linux/i2c.h> +#include <linux/module.h> + +#include "rm3100.h" + +static const struct regmap_config rm3100_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .rd_table = &rm3100_readable_table, + .wr_table = &rm3100_writable_table, + .volatile_table = &rm3100_volatile_table, + + .cache_type = REGCACHE_RBTREE, +}; + +static int rm3100_probe(struct i2c_client *client) +{ + struct regmap *regmap; + + regmap = devm_regmap_init_i2c(client, &rm3100_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + return rm3100_common_probe(&client->dev, regmap, client->irq); +} + +static const struct of_device_id rm3100_dt_match[] = { + { .compatible = "pni,rm3100", }, + { } +}; +MODULE_DEVICE_TABLE(of, rm3100_dt_match); + +static struct i2c_driver rm3100_driver = { + .driver = { + .name = "rm3100-i2c", + .of_match_table = rm3100_dt_match, + }, + .probe_new = rm3100_probe, +}; +module_i2c_driver(rm3100_driver); + +MODULE_AUTHOR("Song Qiang <songqiang1304521@gmail.com>"); +MODULE_DESCRIPTION("PNI RM3100 3-axis magnetometer i2c driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/magnetometer/rm3100-spi.c b/drivers/iio/magnetometer/rm3100-spi.c @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Support for PNI RM3100 3-axis geomagnetic sensor on a spi bus. + * + * Copyright (C) 2018 Song Qiang <songqiang1304521@gmail.com> + */ + +#include <linux/module.h> +#include <linux/spi/spi.h> + +#include "rm3100.h" + +static const struct regmap_config rm3100_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .rd_table = &rm3100_readable_table, + .wr_table = &rm3100_writable_table, + .volatile_table = &rm3100_volatile_table, + + .read_flag_mask = 0x80, + + .cache_type = REGCACHE_RBTREE, +}; + +static int rm3100_probe(struct spi_device *spi) +{ + struct regmap *regmap; + int ret; + + /* Actually this device supports both mode 0 and mode 3. */ + spi->mode = SPI_MODE_0; + /* Data rates cannot exceed 1Mbits. */ + spi->max_speed_hz = 1000000; + spi->bits_per_word = 8; + ret = spi_setup(spi); + if (ret) + return ret; + + regmap = devm_regmap_init_spi(spi, &rm3100_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + return rm3100_common_probe(&spi->dev, regmap, spi->irq); +} + +static const struct of_device_id rm3100_dt_match[] = { + { .compatible = "pni,rm3100", }, + { } +}; +MODULE_DEVICE_TABLE(of, rm3100_dt_match); + +static struct spi_driver rm3100_driver = { + .driver = { + .name = "rm3100-spi", + .of_match_table = rm3100_dt_match, + }, + .probe = rm3100_probe, +}; +module_spi_driver(rm3100_driver); + +MODULE_AUTHOR("Song Qiang <songqiang1304521@gmail.com>"); +MODULE_DESCRIPTION("PNI RM3100 3-axis magnetometer spi driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/magnetometer/rm3100.h b/drivers/iio/magnetometer/rm3100.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2018 Song Qiang <songqiang1304521@gmail.com> + */ + +#ifndef RM3100_CORE_H +#define RM3100_CORE_H + +#include <linux/regmap.h> + +extern const struct regmap_access_table rm3100_readable_table; +extern const struct regmap_access_table rm3100_writable_table; +extern const struct regmap_access_table rm3100_volatile_table; + +int rm3100_common_probe(struct device *dev, struct regmap *regmap, int irq); + +#endif /* RM3100_CORE_H */ diff --git a/drivers/iio/magnetometer/st_magn.h b/drivers/iio/magnetometer/st_magn.h @@ -20,6 +20,7 @@ #define LIS3MDL_MAGN_DEV_NAME "lis3mdl" #define LSM303AGR_MAGN_DEV_NAME "lsm303agr_magn" #define LIS2MDL_MAGN_DEV_NAME "lis2mdl" +#define LSM9DS1_MAGN_DEV_NAME "lsm9ds1_magn" int st_magn_common_probe(struct iio_dev *indio_dev); void st_magn_common_remove(struct iio_dev *indio_dev); diff --git a/drivers/iio/magnetometer/st_magn_core.c b/drivers/iio/magnetometer/st_magn_core.c @@ -29,9 +29,9 @@ #define ST_MAGN_NUMBER_DATA_CHANNELS 3 /* DEFAULT VALUE FOR SENSORS */ -#define ST_MAGN_DEFAULT_OUT_X_H_ADDR 0X03 -#define ST_MAGN_DEFAULT_OUT_Y_H_ADDR 0X07 -#define ST_MAGN_DEFAULT_OUT_Z_H_ADDR 0X05 +#define ST_MAGN_DEFAULT_OUT_X_H_ADDR 0x03 +#define ST_MAGN_DEFAULT_OUT_Y_H_ADDR 0x07 +#define ST_MAGN_DEFAULT_OUT_Z_H_ADDR 0x05 /* FULLSCALE */ #define ST_MAGN_FS_AVL_1300MG 1300 @@ -267,6 +267,7 @@ static const struct st_sensor_settings st_magn_sensors_settings[] = { .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, .sensors_supported = { [0] = LIS3MDL_MAGN_DEV_NAME, + [1] = LSM9DS1_MAGN_DEV_NAME, }, .ch = (struct iio_chan_spec *)st_magn_2_16bit_channels, .odr = { @@ -315,6 +316,10 @@ static const struct st_sensor_settings st_magn_sensors_settings[] = { }, }, }, + .bdu = { + .addr = 0x24, + .mask = 0x40, + }, .drdy_irq = { /* drdy line is routed drdy pin */ .stat_drdy = { diff --git a/drivers/iio/magnetometer/st_magn_i2c.c b/drivers/iio/magnetometer/st_magn_i2c.c @@ -44,6 +44,10 @@ static const struct of_device_id st_magn_of_match[] = { .compatible = "st,lis2mdl", .data = LIS2MDL_MAGN_DEV_NAME, }, + { + .compatible = "st,lsm9ds1-magn", + .data = LSM9DS1_MAGN_DEV_NAME, + }, {}, }; MODULE_DEVICE_TABLE(of, st_magn_of_match); @@ -90,6 +94,7 @@ static const struct i2c_device_id st_magn_id_table[] = { { LIS3MDL_MAGN_DEV_NAME }, { LSM303AGR_MAGN_DEV_NAME }, { LIS2MDL_MAGN_DEV_NAME }, + { LSM9DS1_MAGN_DEV_NAME }, {}, }; MODULE_DEVICE_TABLE(i2c, st_magn_id_table); diff --git a/drivers/iio/magnetometer/st_magn_spi.c b/drivers/iio/magnetometer/st_magn_spi.c @@ -23,6 +23,8 @@ * For new single-chip sensors use <device_name> as compatible string. * For old single-chip devices keep <device_name>-magn to maintain * compatibility + * For multi-chip devices, use <device_name>-magn to distinguish which + * capability is being used */ static const struct of_device_id st_magn_of_match[] = { { @@ -37,6 +39,10 @@ static const struct of_device_id st_magn_of_match[] = { .compatible = "st,lis2mdl", .data = LIS2MDL_MAGN_DEV_NAME, }, + { + .compatible = "st,lsm9ds1-magn", + .data = LSM9DS1_MAGN_DEV_NAME, + }, {} }; MODULE_DEVICE_TABLE(of, st_magn_of_match); @@ -79,6 +85,7 @@ static const struct spi_device_id st_magn_id_table[] = { { LIS3MDL_MAGN_DEV_NAME }, { LSM303AGR_MAGN_DEV_NAME }, { LIS2MDL_MAGN_DEV_NAME }, + { LSM9DS1_MAGN_DEV_NAME }, {}, }; MODULE_DEVICE_TABLE(spi, st_magn_id_table); diff --git a/drivers/iio/potentiometer/Kconfig b/drivers/iio/potentiometer/Kconfig @@ -90,6 +90,18 @@ config MCP4531 To compile this driver as a module, choose M here: the module will be called mcp4531. +config MCP41010 + tristate "Microchip MCP41xxx/MCP42xxx Digital Potentiometer driver" + depends on SPI + help + Say yes here to build support for the Microchip + MCP41010, MCP41050, MCP41100, + MCP42010, MCP42050, MCP42100 + digital potentiometer chips. + + To compile this driver as a module, choose M here: the + module will be called mcp41010. + config TPL0102 tristate "Texas Instruments digital potentiometer driver" depends on I2C diff --git a/drivers/iio/potentiometer/Makefile b/drivers/iio/potentiometer/Makefile @@ -11,4 +11,5 @@ obj-$(CONFIG_MAX5487) += max5487.o obj-$(CONFIG_MCP4018) += mcp4018.o obj-$(CONFIG_MCP4131) += mcp4131.o obj-$(CONFIG_MCP4531) += mcp4531.o +obj-$(CONFIG_MCP41010) += mcp41010.o obj-$(CONFIG_TPL0102) += tpl0102.o diff --git a/drivers/iio/potentiometer/mcp41010.c b/drivers/iio/potentiometer/mcp41010.c @@ -0,0 +1,203 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Industrial I/O driver for Microchip digital potentiometers + * + * Copyright (c) 2018 Chris Coffey <cmc@babblebit.net> + * Based on: Slawomir Stepien's code from mcp4131.c + * + * Datasheet: http://ww1.microchip.com/downloads/en/devicedoc/11195c.pdf + * + * DEVID #Wipers #Positions Resistance (kOhm) + * mcp41010 1 256 10 + * mcp41050 1 256 50 + * mcp41100 1 256 100 + * mcp42010 2 256 10 + * mcp42050 2 256 50 + * mcp42100 2 256 100 + */ + +#include <linux/cache.h> +#include <linux/err.h> +#include <linux/iio/iio.h> +#include <linux/iio/types.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/spi/spi.h> + +#define MCP41010_MAX_WIPERS 2 +#define MCP41010_WRITE BIT(4) +#define MCP41010_WIPER_MAX 255 +#define MCP41010_WIPER_CHANNEL BIT(0) + +struct mcp41010_cfg { + char name[16]; + int wipers; + int kohms; +}; + +enum mcp41010_type { + MCP41010, + MCP41050, + MCP41100, + MCP42010, + MCP42050, + MCP42100, +}; + +static const struct mcp41010_cfg mcp41010_cfg[] = { + [MCP41010] = { .name = "mcp41010", .wipers = 1, .kohms = 10, }, + [MCP41050] = { .name = "mcp41050", .wipers = 1, .kohms = 50, }, + [MCP41100] = { .name = "mcp41100", .wipers = 1, .kohms = 100, }, + [MCP42010] = { .name = "mcp42010", .wipers = 2, .kohms = 10, }, + [MCP42050] = { .name = "mcp42050", .wipers = 2, .kohms = 50, }, + [MCP42100] = { .name = "mcp42100", .wipers = 2, .kohms = 100, }, +}; + +struct mcp41010_data { + struct spi_device *spi; + const struct mcp41010_cfg *cfg; + struct mutex lock; /* Protect write sequences */ + unsigned int value[MCP41010_MAX_WIPERS]; /* Cache wiper values */ + u8 buf[2] ____cacheline_aligned; +}; + +#define MCP41010_CHANNEL(ch) { \ + .type = IIO_RESISTANCE, \ + .indexed = 1, \ + .output = 1, \ + .channel = (ch), \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ +} + +static const struct iio_chan_spec mcp41010_channels[] = { + MCP41010_CHANNEL(0), + MCP41010_CHANNEL(1), +}; + +static int mcp41010_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct mcp41010_data *data = iio_priv(indio_dev); + int channel = chan->channel; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + *val = data->value[channel]; + return IIO_VAL_INT; + + case IIO_CHAN_INFO_SCALE: + *val = 1000 * data->cfg->kohms; + *val2 = MCP41010_WIPER_MAX; + return IIO_VAL_FRACTIONAL; + } + + return -EINVAL; +} + +static int mcp41010_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + int err; + struct mcp41010_data *data = iio_priv(indio_dev); + int channel = chan->channel; + + if (mask != IIO_CHAN_INFO_RAW) + return -EINVAL; + + if (val > MCP41010_WIPER_MAX || val < 0) + return -EINVAL; + + mutex_lock(&data->lock); + + data->buf[0] = MCP41010_WIPER_CHANNEL << channel; + data->buf[0] |= MCP41010_WRITE; + data->buf[1] = val & 0xff; + + err = spi_write(data->spi, data->buf, sizeof(data->buf)); + if (!err) + data->value[channel] = val; + + mutex_unlock(&data->lock); + + return err; +} + +static const struct iio_info mcp41010_info = { + .read_raw = mcp41010_read_raw, + .write_raw = mcp41010_write_raw, +}; + +static int mcp41010_probe(struct spi_device *spi) +{ + int err; + struct device *dev = &spi->dev; + struct mcp41010_data *data; + struct iio_dev *indio_dev; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + data = iio_priv(indio_dev); + spi_set_drvdata(spi, indio_dev); + data->spi = spi; + data->cfg = of_device_get_match_data(&spi->dev); + if (!data->cfg) + data->cfg = &mcp41010_cfg[spi_get_device_id(spi)->driver_data]; + + mutex_init(&data->lock); + + indio_dev->dev.parent = dev; + indio_dev->info = &mcp41010_info; + indio_dev->channels = mcp41010_channels; + indio_dev->num_channels = data->cfg->wipers; + indio_dev->name = data->cfg->name; + + err = devm_iio_device_register(dev, indio_dev); + if (err) + dev_info(&spi->dev, "Unable to register %s\n", indio_dev->name); + + return err; +} + +static const struct of_device_id mcp41010_match[] = { + { .compatible = "microchip,mcp41010", .data = &mcp41010_cfg[MCP41010] }, + { .compatible = "microchip,mcp41050", .data = &mcp41010_cfg[MCP41050] }, + { .compatible = "microchip,mcp41100", .data = &mcp41010_cfg[MCP41100] }, + { .compatible = "microchip,mcp42010", .data = &mcp41010_cfg[MCP42010] }, + { .compatible = "microchip,mcp42050", .data = &mcp41010_cfg[MCP42050] }, + { .compatible = "microchip,mcp42100", .data = &mcp41010_cfg[MCP42100] }, + {} +}; +MODULE_DEVICE_TABLE(of, mcp41010_match); + +static const struct spi_device_id mcp41010_id[] = { + { "mcp41010", MCP41010 }, + { "mcp41050", MCP41050 }, + { "mcp41100", MCP41100 }, + { "mcp42010", MCP42010 }, + { "mcp42050", MCP42050 }, + { "mcp42100", MCP42100 }, + {} +}; +MODULE_DEVICE_TABLE(spi, mcp41010_id); + +static struct spi_driver mcp41010_driver = { + .driver = { + .name = "mcp41010", + .of_match_table = mcp41010_match, + }, + .probe = mcp41010_probe, + .id_table = mcp41010_id, +}; + +module_spi_driver(mcp41010_driver); + +MODULE_AUTHOR("Chris Coffey <cmc@babblebit.net>"); +MODULE_DESCRIPTION("MCP41010 digital potentiometer"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/potentiometer/mcp4131.c b/drivers/iio/potentiometer/mcp4131.c @@ -42,6 +42,7 @@ #include <linux/module.h> #include <linux/mutex.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/spi/spi.h> #define MCP4131_WRITE (0x00 << 2) @@ -243,7 +244,7 @@ static int mcp4131_probe(struct spi_device *spi) { int err; struct device *dev = &spi->dev; - unsigned long devid = spi_get_device_id(spi)->driver_data; + unsigned long devid; struct mcp4131_data *data; struct iio_dev *indio_dev; @@ -254,7 +255,11 @@ static int mcp4131_probe(struct spi_device *spi) data = iio_priv(indio_dev); spi_set_drvdata(spi, indio_dev); data->spi = spi; - data->cfg = &mcp4131_cfg[devid]; + data->cfg = of_device_get_match_data(&spi->dev); + if (!data->cfg) { + devid = spi_get_device_id(spi)->driver_data; + data->cfg = &mcp4131_cfg[devid]; + } mutex_init(&data->lock); @@ -273,7 +278,6 @@ static int mcp4131_probe(struct spi_device *spi) return 0; } -#if defined(CONFIG_OF) static const struct of_device_id mcp4131_dt_ids[] = { { .compatible = "microchip,mcp4131-502", .data = &mcp4131_cfg[MCP413x_502] }, @@ -406,7 +410,6 @@ static const struct of_device_id mcp4131_dt_ids[] = { {} }; MODULE_DEVICE_TABLE(of, mcp4131_dt_ids); -#endif /* CONFIG_OF */ static const struct spi_device_id mcp4131_id[] = { { "mcp4131-502", MCP413x_502 }, diff --git a/drivers/iio/potentiometer/tpl0102.c b/drivers/iio/potentiometer/tpl0102.c @@ -15,7 +15,7 @@ struct tpl0102_cfg { int wipers; - int max_pos; + int avail[3]; int kohms; }; @@ -28,16 +28,16 @@ enum tpl0102_type { static const struct tpl0102_cfg tpl0102_cfg[] = { /* on-semiconductor parts */ - [CAT5140_503] = { .wipers = 1, .max_pos = 256, .kohms = 50, }, - [CAT5140_104] = { .wipers = 1, .max_pos = 256, .kohms = 100, }, + [CAT5140_503] = { .wipers = 1, .avail = { 0, 1, 255 }, .kohms = 50, }, + [CAT5140_104] = { .wipers = 1, .avail = { 0, 1, 255 }, .kohms = 100, }, /* ti parts */ - [TPL0102_104] = { .wipers = 2, .max_pos = 256, .kohms = 100 }, - [TPL0401_103] = { .wipers = 1, .max_pos = 128, .kohms = 10, }, + [TPL0102_104] = { .wipers = 2, .avail = { 0, 1, 255 }, .kohms = 100 }, + [TPL0401_103] = { .wipers = 1, .avail = { 0, 1, 127 }, .kohms = 10, }, }; struct tpl0102_data { struct regmap *regmap; - unsigned long devid; + const struct tpl0102_cfg *cfg; }; static const struct regmap_config tpl0102_regmap_config = { @@ -52,6 +52,7 @@ static const struct regmap_config tpl0102_regmap_config = { .channel = (ch), \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ + .info_mask_separate_available = BIT(IIO_CHAN_INFO_RAW), \ } static const struct iio_chan_spec tpl0102_channels[] = { @@ -72,14 +73,32 @@ static int tpl0102_read_raw(struct iio_dev *indio_dev, return ret ? ret : IIO_VAL_INT; } case IIO_CHAN_INFO_SCALE: - *val = 1000 * tpl0102_cfg[data->devid].kohms; - *val2 = tpl0102_cfg[data->devid].max_pos; + *val = 1000 * data->cfg->kohms; + *val2 = data->cfg->avail[2] + 1; return IIO_VAL_FRACTIONAL; } return -EINVAL; } +static int tpl0102_read_avail(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int **vals, int *type, int *length, + long mask) +{ + struct tpl0102_data *data = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + *length = ARRAY_SIZE(data->cfg->avail); + *vals = data->cfg->avail; + *type = IIO_VAL_INT; + return IIO_AVAIL_RANGE; + } + + return -EINVAL; +} + static int tpl0102_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) @@ -89,7 +108,7 @@ static int tpl0102_write_raw(struct iio_dev *indio_dev, if (mask != IIO_CHAN_INFO_RAW) return -EINVAL; - if (val >= tpl0102_cfg[data->devid].max_pos || val < 0) + if (val > data->cfg->avail[2] || val < 0) return -EINVAL; return regmap_write(data->regmap, chan->channel, val); @@ -97,6 +116,7 @@ static int tpl0102_write_raw(struct iio_dev *indio_dev, static const struct iio_info tpl0102_info = { .read_raw = tpl0102_read_raw, + .read_avail = tpl0102_read_avail, .write_raw = tpl0102_write_raw, }; @@ -113,7 +133,7 @@ static int tpl0102_probe(struct i2c_client *client, data = iio_priv(indio_dev); i2c_set_clientdata(client, indio_dev); - data->devid = id->driver_data; + data->cfg = &tpl0102_cfg[id->driver_data]; data->regmap = devm_regmap_init_i2c(client, &tpl0102_regmap_config); if (IS_ERR(data->regmap)) { dev_err(dev, "regmap initialization failed\n"); @@ -123,7 +143,7 @@ static int tpl0102_probe(struct i2c_client *client, indio_dev->dev.parent = dev; indio_dev->info = &tpl0102_info; indio_dev->channels = tpl0102_channels; - indio_dev->num_channels = tpl0102_cfg[data->devid].wipers; + indio_dev->num_channels = data->cfg->wipers; indio_dev->name = client->name; return devm_iio_device_register(dev, indio_dev); diff --git a/drivers/iio/resolver/Kconfig b/drivers/iio/resolver/Kconfig @@ -3,6 +3,16 @@ # menu "Resolver to digital converters" +config AD2S90 + tristate "Analog Devices ad2s90 driver" + depends on SPI + help + Say yes here to build support for Analog Devices spi resolver + to digital converters, ad2s90, provides direct access via sysfs. + + To compile this driver as a module, choose M here: the + module will be called ad2s90. + config AD2S1200 tristate "Analog Devices ad2s1200/ad2s1205 driver" depends on SPI diff --git a/drivers/iio/resolver/Makefile b/drivers/iio/resolver/Makefile @@ -2,4 +2,5 @@ # Makefile for Resolver/Synchro drivers # +obj-$(CONFIG_AD2S90) += ad2s90.o obj-$(CONFIG_AD2S1200) += ad2s1200.o diff --git a/drivers/iio/resolver/ad2s90.c b/drivers/iio/resolver/ad2s90.c @@ -0,0 +1,131 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ad2s90.c simple support for the ADI Resolver to Digital Converters: AD2S90 + * + * Copyright (c) 2010-2010 Analog Devices Inc. + */ +#include <linux/types.h> +#include <linux/mutex.h> +#include <linux/device.h> +#include <linux/spi/spi.h> +#include <linux/slab.h> +#include <linux/sysfs.h> +#include <linux/module.h> + +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> + +/* + * Although chip's max frequency is 2Mhz, it needs 600ns between CS and the + * first falling edge of SCLK, so frequency should be at most 1 / (2 * 6e-7) + */ +#define AD2S90_MAX_SPI_FREQ_HZ 830000 + +struct ad2s90_state { + struct mutex lock; /* lock to protect rx buffer */ + struct spi_device *sdev; + u8 rx[2] ____cacheline_aligned; +}; + +static int ad2s90_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, + int *val2, + long m) +{ + int ret; + struct ad2s90_state *st = iio_priv(indio_dev); + + if (chan->type != IIO_ANGL) + return -EINVAL; + + switch (m) { + case IIO_CHAN_INFO_SCALE: + /* 2 * Pi / 2^12 */ + *val = 6283; /* mV */ + *val2 = 12; + return IIO_VAL_FRACTIONAL_LOG2; + case IIO_CHAN_INFO_RAW: + mutex_lock(&st->lock); + ret = spi_read(st->sdev, st->rx, 2); + if (ret < 0) { + mutex_unlock(&st->lock); + return ret; + } + *val = (((u16)(st->rx[0])) << 4) | ((st->rx[1] & 0xF0) >> 4); + + mutex_unlock(&st->lock); + + return IIO_VAL_INT; + default: + break; + } + + return -EINVAL; +} + +static const struct iio_info ad2s90_info = { + .read_raw = ad2s90_read_raw, +}; + +static const struct iio_chan_spec ad2s90_chan = { + .type = IIO_ANGL, + .indexed = 1, + .channel = 0, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), +}; + +static int ad2s90_probe(struct spi_device *spi) +{ + struct iio_dev *indio_dev; + struct ad2s90_state *st; + + if (spi->max_speed_hz > AD2S90_MAX_SPI_FREQ_HZ) { + dev_err(&spi->dev, "SPI CLK, %d Hz exceeds %d Hz\n", + spi->max_speed_hz, AD2S90_MAX_SPI_FREQ_HZ); + return -EINVAL; + } + + indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st)); + if (!indio_dev) + return -ENOMEM; + st = iio_priv(indio_dev); + spi_set_drvdata(spi, indio_dev); + + mutex_init(&st->lock); + st->sdev = spi; + indio_dev->dev.parent = &spi->dev; + indio_dev->info = &ad2s90_info; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = &ad2s90_chan; + indio_dev->num_channels = 1; + indio_dev->name = spi_get_device_id(spi)->name; + + return devm_iio_device_register(indio_dev->dev.parent, indio_dev); +} + +static const struct of_device_id ad2s90_of_match[] = { + { .compatible = "adi,ad2s90", }, + {} +}; +MODULE_DEVICE_TABLE(of, ad2s90_of_match); + +static const struct spi_device_id ad2s90_id[] = { + { "ad2s90" }, + {} +}; +MODULE_DEVICE_TABLE(spi, ad2s90_id); + +static struct spi_driver ad2s90_driver = { + .driver = { + .name = "ad2s90", + .of_match_table = ad2s90_of_match, + }, + .probe = ad2s90_probe, + .id_table = ad2s90_id, +}; +module_spi_driver(ad2s90_driver); + +MODULE_AUTHOR("Graff Yang <graff.yang@gmail.com>"); +MODULE_DESCRIPTION("Analog Devices AD2S90 Resolver to Digital SPI driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/staging/android/ashmem.c b/drivers/staging/android/ashmem.c @@ -195,7 +195,7 @@ static int range_alloc(struct ashmem_area *asma, } /** - * range_del() - Deletes and dealloctes an ashmem_range structure + * range_del() - Deletes and deallocates an ashmem_range structure * @range: The associated ashmem_range that has previously been allocated */ static void range_del(struct ashmem_range *range) @@ -521,7 +521,7 @@ static int set_name(struct ashmem_area *asma, void __user *name) * an data abort which would try to access mmap_sem. If another * thread has invoked ashmem_mmap then it will be holding the * semaphore and will be waiting for ashmem_mutex, there by leading to - * deadlock. We'll release the mutex and take the name to a local + * deadlock. We'll release the mutex and take the name to a local * variable that does not need protection and later copy the local * variable to the structure member with lock held. */ diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c @@ -23,7 +23,6 @@ #include <linux/mm_types.h> #include <linux/rbtree.h> #include <linux/sched/task.h> -#include <linux/seq_file.h> #include <linux/slab.h> #include <linux/uaccess.h> #include <linux/vmalloc.h> @@ -95,6 +94,13 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap, goto err1; } + spin_lock(&heap->stat_lock); + heap->num_of_buffers++; + heap->num_of_alloc_bytes += len; + if (heap->num_of_alloc_bytes > heap->alloc_bytes_wm) + heap->alloc_bytes_wm = heap->num_of_alloc_bytes; + spin_unlock(&heap->stat_lock); + INIT_LIST_HEAD(&buffer->attachments); mutex_init(&buffer->lock); mutex_lock(&dev->buffer_lock); @@ -117,6 +123,11 @@ void ion_buffer_destroy(struct ion_buffer *buffer) buffer->heap->ops->unmap_kernel(buffer->heap, buffer); } buffer->heap->ops->free(buffer); + spin_lock(&buffer->heap->stat_lock); + buffer->heap->num_of_buffers--; + buffer->heap->num_of_alloc_bytes -= buffer->size; + spin_unlock(&buffer->heap->stat_lock); + kfree(buffer); } @@ -528,12 +539,15 @@ void ion_device_add_heap(struct ion_heap *heap) { struct ion_device *dev = internal_dev; int ret; + struct dentry *heap_root; + char debug_name[64]; if (!heap->ops->allocate || !heap->ops->free) pr_err("%s: can not add heap with invalid ops struct.\n", __func__); spin_lock_init(&heap->free_lock); + spin_lock_init(&heap->stat_lock); heap->free_list_size = 0; if (heap->flags & ION_HEAP_FLAG_DEFER_FREE) @@ -546,6 +560,33 @@ void ion_device_add_heap(struct ion_heap *heap) } heap->dev = dev; + heap->num_of_buffers = 0; + heap->num_of_alloc_bytes = 0; + heap->alloc_bytes_wm = 0; + + heap_root = debugfs_create_dir(heap->name, dev->debug_root); + debugfs_create_u64("num_of_buffers", + 0444, heap_root, + &heap->num_of_buffers); + debugfs_create_u64("num_of_alloc_bytes", + 0444, + heap_root, + &heap->num_of_alloc_bytes); + debugfs_create_u64("alloc_bytes_wm", + 0444, + heap_root, + &heap->alloc_bytes_wm); + + if (heap->shrinker.count_objects && + heap->shrinker.scan_objects) { + snprintf(debug_name, 64, "%s_shrink", heap->name); + debugfs_create_file(debug_name, + 0644, + heap_root, + heap, + &debug_shrink_fops); + } + down_write(&dev->lock); heap->id = heap_id++; /* @@ -555,14 +596,6 @@ void ion_device_add_heap(struct ion_heap *heap) plist_node_init(&heap->node, -heap->id); plist_add(&heap->node, &dev->heaps); - if (heap->shrinker.count_objects && heap->shrinker.scan_objects) { - char debug_name[64]; - - snprintf(debug_name, 64, "%s_shrink", heap->name); - debugfs_create_file(debug_name, 0644, dev->debug_root, - heap, &debug_shrink_fops); - } - dev->heap_cnt++; up_write(&dev->lock); } diff --git a/drivers/staging/android/ion/ion.h b/drivers/staging/android/ion/ion.h @@ -157,6 +157,9 @@ struct ion_heap_ops { * @lock: protects the free list * @waitqueue: queue to wait on from deferred free thread * @task: task struct of deferred free thread + * @num_of_buffers the number of currently allocated buffers + * @num_of_alloc_bytes the number of allocated bytes + * @alloc_bytes_wm the number of allocated bytes watermark * * Represents a pool of memory from which buffers can be made. In some * systems the only heap is regular system memory allocated via vmalloc. @@ -177,6 +180,12 @@ struct ion_heap { spinlock_t free_lock; wait_queue_head_t waitqueue; struct task_struct *task; + u64 num_of_buffers; + u64 num_of_alloc_bytes; + u64 alloc_bytes_wm; + + /* protect heap statistics */ + spinlock_t stat_lock; }; /** diff --git a/drivers/staging/android/ion/ion_system_heap.c b/drivers/staging/android/ion/ion_system_heap.c @@ -11,7 +11,6 @@ #include <linux/highmem.h> #include <linux/mm.h> #include <linux/scatterlist.h> -#include <linux/seq_file.h> #include <linux/slab.h> #include <linux/vmalloc.h> #include "ion.h" diff --git a/drivers/staging/axis-fifo/axis-fifo.c b/drivers/staging/axis-fifo/axis-fifo.c @@ -485,7 +485,8 @@ static ssize_t axis_fifo_write(struct file *f, const char __user *buf, ioread32(fifo->base_addr + XLLF_TDFV_OFFSET) >= words_to_write, fifo->write_queue_lock, - (write_timeout >= 0) ? msecs_to_jiffies(write_timeout) : + (write_timeout >= 0) ? + msecs_to_jiffies(write_timeout) : MAX_SCHEDULE_TIMEOUT); spin_unlock_irq(&fifo->write_queue_lock); diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c @@ -1209,6 +1209,7 @@ static int check_insn_config_length(struct comedi_insn *insn, break; case INSN_CONFIG_PWM_OUTPUT: case INSN_CONFIG_ANALOG_TRIG: + case INSN_CONFIG_TIMER_1: if (insn->n == 5) return 0; break; @@ -1500,25 +1501,21 @@ out: * data (for reads) to insns[].data pointers */ /* arbitrary limits */ -#define MAX_SAMPLES 256 +#define MIN_SAMPLES 16 +#define MAX_SAMPLES 65536 static int do_insnlist_ioctl(struct comedi_device *dev, struct comedi_insnlist __user *arg, void *file) { struct comedi_insnlist insnlist; struct comedi_insn *insns = NULL; unsigned int *data = NULL; + unsigned int max_n_data_required = MIN_SAMPLES; int i = 0; int ret = 0; if (copy_from_user(&insnlist, arg, sizeof(insnlist))) return -EFAULT; - data = kmalloc_array(MAX_SAMPLES, sizeof(unsigned int), GFP_KERNEL); - if (!data) { - ret = -ENOMEM; - goto error; - } - insns = kcalloc(insnlist.n_insns, sizeof(*insns), GFP_KERNEL); if (!insns) { ret = -ENOMEM; @@ -1532,13 +1529,26 @@ static int do_insnlist_ioctl(struct comedi_device *dev, goto error; } - for (i = 0; i < insnlist.n_insns; i++) { + /* Determine maximum memory needed for all instructions. */ + for (i = 0; i < insnlist.n_insns; ++i) { if (insns[i].n > MAX_SAMPLES) { dev_dbg(dev->class_dev, "number of samples too large\n"); ret = -EINVAL; goto error; } + max_n_data_required = max(max_n_data_required, insns[i].n); + } + + /* Allocate scratch space for all instruction data. */ + data = kmalloc_array(max_n_data_required, sizeof(unsigned int), + GFP_KERNEL); + if (!data) { + ret = -ENOMEM; + goto error; + } + + for (i = 0; i < insnlist.n_insns; ++i) { if (insns[i].insn & INSN_MASK_WRITE) { if (copy_from_user(data, insns[i].data, insns[i].n * sizeof(unsigned int))) { @@ -1592,22 +1602,27 @@ static int do_insn_ioctl(struct comedi_device *dev, { struct comedi_insn insn; unsigned int *data = NULL; + unsigned int n_data = MIN_SAMPLES; int ret = 0; - data = kmalloc_array(MAX_SAMPLES, sizeof(unsigned int), GFP_KERNEL); - if (!data) { - ret = -ENOMEM; - goto error; - } - if (copy_from_user(&insn, arg, sizeof(insn))) { - ret = -EFAULT; - goto error; + return -EFAULT; } + n_data = max(n_data, insn.n); + /* This is where the behavior of insn and insnlist deviate. */ - if (insn.n > MAX_SAMPLES) + if (insn.n > MAX_SAMPLES) { insn.n = MAX_SAMPLES; + n_data = MAX_SAMPLES; + } + + data = kmalloc_array(n_data, sizeof(unsigned int), GFP_KERNEL); + if (!data) { + ret = -ENOMEM; + goto error; + } + if (insn.insn & INSN_MASK_WRITE) { if (copy_from_user(data, insn.data, diff --git a/drivers/staging/comedi/drivers/8255.h b/drivers/staging/comedi/drivers/8255.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * module/8255.h * Header file for 8255 diff --git a/drivers/staging/comedi/drivers/addi_apci_3501.c b/drivers/staging/comedi/drivers/addi_apci_3501.c @@ -258,8 +258,15 @@ static int apci3501_eeprom_insn_read(struct comedi_device *dev, { struct apci3501_private *devpriv = dev->private; unsigned short addr = CR_CHAN(insn->chanspec); + unsigned int val; + unsigned int i; - data[0] = apci3501_eeprom_readw(devpriv->amcc, 2 * addr); + if (insn->n) { + /* No point reading the same EEPROM location more than once. */ + val = apci3501_eeprom_readw(devpriv->amcc, 2 * addr); + for (i = 0; i < insn->n; i++) + data[i] = val; + } return insn->n; } diff --git a/drivers/staging/comedi/drivers/amplc_dio200.h b/drivers/staging/comedi/drivers/amplc_dio200.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * comedi/drivers/amplc_dio.h * diff --git a/drivers/staging/comedi/drivers/amplc_pc236.h b/drivers/staging/comedi/drivers/amplc_pc236.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * comedi/drivers/amplc_pc236.h * Header for "amplc_pc236", "amplc_pci236" and "amplc_pc236_common". diff --git a/drivers/staging/comedi/drivers/cb_pcidas.c b/drivers/staging/comedi/drivers/cb_pcidas.c @@ -116,7 +116,7 @@ #define PCIDAS_TRIG_SEL_ANALOG PCIDAS_TRIG_SEL(3) /* ext. analog trigger */ #define PCIDAS_TRIG_SEL_MASK PCIDAS_TRIG_SEL(3) /* start trigger mask */ #define PCIDAS_TRIG_POL BIT(2) /* invert trigger (1602 only) */ -#define PCIDAS_TRIG_MODE BIT(3) /* edge/level trigerred (1602 only) */ +#define PCIDAS_TRIG_MODE BIT(3) /* edge/level triggered (1602 only) */ #define PCIDAS_TRIG_EN BIT(4) /* enable external start trigger */ #define PCIDAS_TRIG_BURSTE BIT(5) /* burst mode enable */ #define PCIDAS_TRIG_CLR BIT(7) /* clear external trigger */ diff --git a/drivers/staging/comedi/drivers/cb_pcidas64.c b/drivers/staging/comedi/drivers/cb_pcidas64.c @@ -3097,8 +3097,10 @@ static int ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, { const struct pcidas64_board *board = dev->board_ptr; struct pcidas64_private *devpriv = dev->private; - int chan = CR_CHAN(insn->chanspec); - int range = CR_RANGE(insn->chanspec); + unsigned int chan = CR_CHAN(insn->chanspec); + unsigned int range = CR_RANGE(insn->chanspec); + unsigned int val = s->readback[chan]; + unsigned int i; /* do some initializing */ writew(0, devpriv->main_iobase + DAC_CONTROL0_REG); @@ -3108,20 +3110,24 @@ static int ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, writew(devpriv->dac_control1_bits, devpriv->main_iobase + DAC_CONTROL1_REG); - /* write to channel */ - if (board->layout == LAYOUT_4020) { - writew(data[0] & 0xff, - devpriv->main_iobase + dac_lsb_4020_reg(chan)); - writew((data[0] >> 8) & 0xf, - devpriv->main_iobase + dac_msb_4020_reg(chan)); - } else { - writew(data[0], devpriv->main_iobase + dac_convert_reg(chan)); + for (i = 0; i < insn->n; i++) { + /* write to channel */ + val = data[i]; + if (board->layout == LAYOUT_4020) { + writew(val & 0xff, + devpriv->main_iobase + dac_lsb_4020_reg(chan)); + writew((val >> 8) & 0xf, + devpriv->main_iobase + dac_msb_4020_reg(chan)); + } else { + writew(val, + devpriv->main_iobase + dac_convert_reg(chan)); + } } - /* remember output value */ - s->readback[chan] = data[0]; + /* remember last output value */ + s->readback[chan] = val; - return 1; + return insn->n; } static void set_dac_control0_reg(struct comedi_device *dev, @@ -3762,9 +3768,17 @@ static int eeprom_read_insn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { - data[0] = read_eeprom(dev, CR_CHAN(insn->chanspec)); + unsigned int val; + unsigned int i; - return 1; + if (insn->n) { + /* No point reading the same EEPROM location more than once. */ + val = read_eeprom(dev, CR_CHAN(insn->chanspec)); + for (i = 0; i < insn->n; i++) + data[i] = val; + } + + return insn->n; } /* Allocate and initialize the subdevice structures. */ diff --git a/drivers/staging/comedi/drivers/cb_pcidda.c b/drivers/staging/comedi/drivers/cb_pcidda.c @@ -291,6 +291,7 @@ static int cb_pcidda_ao_insn_write(struct comedi_device *dev, unsigned int channel = CR_CHAN(insn->chanspec); unsigned int range = CR_RANGE(insn->chanspec); unsigned int ctrl; + unsigned int i; if (range != devpriv->ao_range[channel]) cb_pcidda_calibrate(dev, channel, range); @@ -317,7 +318,8 @@ static int cb_pcidda_ao_insn_write(struct comedi_device *dev, outw(ctrl, devpriv->daqio + CB_DDA_DA_CTRL_REG); - outw(data[0], devpriv->daqio + CB_DDA_DA_DATA_REG(channel)); + for (i = 0; i < insn->n; i++) + outw(data[i], devpriv->daqio + CB_DDA_DA_DATA_REG(channel)); return insn->n; } diff --git a/drivers/staging/comedi/drivers/comedi_8254.h b/drivers/staging/comedi/drivers/comedi_8254.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * comedi_8254.h * Generic 8254 timer/counter support diff --git a/drivers/staging/comedi/drivers/comedi_isadma.h b/drivers/staging/comedi/drivers/comedi_isadma.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * COMEDI ISA DMA support functions * Copyright (c) 2014 H Hartley Sweeten <hsweeten@visionengravers.com> diff --git a/drivers/staging/comedi/drivers/das08.h b/drivers/staging/comedi/drivers/das08.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * das08.h * diff --git a/drivers/staging/comedi/drivers/dt9812.c b/drivers/staging/comedi/drivers/dt9812.c @@ -40,7 +40,7 @@ #define DT9812_MAX_WRITE_CMD_PIPE_SIZE 32 #define DT9812_MAX_READ_CMD_PIPE_SIZE 32 -/* usb_bulk_msg() timout in milliseconds */ +/* usb_bulk_msg() timeout in milliseconds */ #define DT9812_USB_TIMEOUT 1000 /* diff --git a/drivers/staging/comedi/drivers/mite.h b/drivers/staging/comedi/drivers/mite.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * module/mite.h * Hardware driver for NI Mite PCI interface chip diff --git a/drivers/staging/comedi/drivers/ni_labpc.h b/drivers/staging/comedi/drivers/ni_labpc.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * Header for ni_labpc ISA/PCMCIA/PCI drivers * diff --git a/drivers/staging/comedi/drivers/ni_labpc_common.c b/drivers/staging/comedi/drivers/ni_labpc_common.c @@ -906,7 +906,9 @@ static int labpc_ao_insn_write(struct comedi_device *dev, { const struct labpc_boardinfo *board = dev->board_ptr; struct labpc_private *devpriv = dev->private; - int channel, range; + unsigned int channel; + unsigned int range; + unsigned int i; unsigned long flags; channel = CR_CHAN(insn->chanspec); @@ -932,9 +934,10 @@ static int labpc_ao_insn_write(struct comedi_device *dev, devpriv->write_byte(dev, devpriv->cmd6, CMD6_REG); } /* send data */ - labpc_ao_write(dev, s, channel, data[0]); + for (i = 0; i < insn->n; i++) + labpc_ao_write(dev, s, channel, data[i]); - return 1; + return insn->n; } /* lowlevel write to eeprom/dac */ diff --git a/drivers/staging/comedi/drivers/ni_stc.h b/drivers/staging/comedi/drivers/ni_stc.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * Register descriptions for NI DAQ-STC chip * diff --git a/drivers/staging/comedi/drivers/ni_tio.h b/drivers/staging/comedi/drivers/ni_tio.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * Header file for NI general purpose counter support code (ni_tio.c) * diff --git a/drivers/staging/comedi/drivers/ni_tio_internal.h b/drivers/staging/comedi/drivers/ni_tio_internal.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * Header file for NI general purpose counter support code (ni_tio.c and * ni_tiocmd.c) diff --git a/drivers/staging/comedi/drivers/plx9052.h b/drivers/staging/comedi/drivers/plx9052.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * Definitions for the PLX-9052 PCI interface chip * diff --git a/drivers/staging/comedi/drivers/plx9080.h b/drivers/staging/comedi/drivers/plx9080.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * plx9080.h * diff --git a/drivers/staging/comedi/drivers/s626.h b/drivers/staging/comedi/drivers/s626.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * comedi/drivers/s626.h * Sensoray s626 Comedi driver, header file diff --git a/drivers/staging/comedi/drivers/tests/ni_routes_test.c b/drivers/staging/comedi/drivers/tests/ni_routes_test.c @@ -372,7 +372,7 @@ void test_ni_lookup_route_register(void) unittest(ni_lookup_route_register(O(8), O(9), T) == 8, "validate last destination\n"); unittest(ni_lookup_route_register(O(10), O(9), T) == -EINVAL, - "lookup invalid desination\n"); + "lookup invalid destination\n"); unittest(ni_lookup_route_register(rgout0_src0, TRIGGER_LINE(0), T) == -EINVAL, diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c @@ -56,25 +56,25 @@ static void _nbu2ss_fifo_flush(struct nbu2ss_udc *, struct nbu2ss_ep *); /*===========================================================================*/ /* Global */ -struct nbu2ss_udc udc_controller; +static struct nbu2ss_udc udc_controller; /*-------------------------------------------------------------------------*/ /* Read */ -static inline u32 _nbu2ss_readl(void *address) +static inline u32 _nbu2ss_readl(void __iomem *address) { return __raw_readl(address); } /*-------------------------------------------------------------------------*/ /* Write */ -static inline void _nbu2ss_writel(void *address, u32 udata) +static inline void _nbu2ss_writel(void __iomem *address, u32 udata) { __raw_writel(udata, address); } /*-------------------------------------------------------------------------*/ /* Set Bit */ -static inline void _nbu2ss_bitset(void *address, u32 udata) +static inline void _nbu2ss_bitset(void __iomem *address, u32 udata) { u32 reg_dt = __raw_readl(address) | (udata); @@ -83,7 +83,7 @@ static inline void _nbu2ss_bitset(void *address, u32 udata) /*-------------------------------------------------------------------------*/ /* Clear Bit */ -static inline void _nbu2ss_bitclr(void *address, u32 udata) +static inline void _nbu2ss_bitclr(void __iomem *address, u32 udata) { u32 reg_dt = __raw_readl(address) & ~(udata); @@ -108,20 +108,16 @@ static void _nbu2ss_dump_register(struct nbu2ss_udc *udc) dev_dbg(&udc->dev, "\n-USB REG-\n"); for (i = 0x0 ; i < USB_BASE_SIZE ; i += 16) { - reg_data = _nbu2ss_readl( - (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i)); + reg_data = _nbu2ss_readl(IO_ADDRESS(USB_BASE_ADDRESS + i)); dev_dbg(&udc->dev, "USB%04x =%08x", i, (int)reg_data); - reg_data = _nbu2ss_readl( - (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i + 4)); + reg_data = _nbu2ss_readl(IO_ADDRESS(USB_BASE_ADDRESS + i + 4)); dev_dbg(&udc->dev, " %08x", (int)reg_data); - reg_data = _nbu2ss_readl( - (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i + 8)); + reg_data = _nbu2ss_readl(IO_ADDRESS(USB_BASE_ADDRESS + i + 8)); dev_dbg(&udc->dev, " %08x", (int)reg_data); - reg_data = _nbu2ss_readl( - (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i + 12)); + reg_data = _nbu2ss_readl(IO_ADDRESS(USB_BASE_ADDRESS + i + 12)); dev_dbg(&udc->dev, " %08x\n", (int)reg_data); } @@ -135,6 +131,7 @@ static void _nbu2ss_ep0_complete(struct usb_ep *_ep, struct usb_request *_req) { u8 recipient; u16 selector; + u16 wIndex; u32 test_mode; struct usb_ctrlrequest *p_ctrl; struct nbu2ss_udc *udc; @@ -149,10 +146,11 @@ static void _nbu2ss_ep0_complete(struct usb_ep *_ep, struct usb_request *_req) /*-------------------------------------------------*/ /* SET_FEATURE */ recipient = (u8)(p_ctrl->bRequestType & USB_RECIP_MASK); - selector = p_ctrl->wValue; + selector = le16_to_cpu(p_ctrl->wValue); if ((recipient == USB_RECIP_DEVICE) && (selector == USB_DEVICE_TEST_MODE)) { - test_mode = (u32)(p_ctrl->wIndex >> 8); + wIndex = le16_to_cpu(p_ctrl->wIndex); + test_mode = (u32)(wIndex >> 8); _nbu2ss_set_test_mode(udc, test_mode); } } @@ -161,11 +159,8 @@ static void _nbu2ss_ep0_complete(struct usb_ep *_ep, struct usb_request *_req) /*-------------------------------------------------------------------------*/ /* Initialization usb_request */ -static void _nbu2ss_create_ep0_packet( - struct nbu2ss_udc *udc, - void *p_buf, - unsigned length -) +static void _nbu2ss_create_ep0_packet(struct nbu2ss_udc *udc, + void *p_buf, unsigned int length) { udc->ep0_req.req.buf = p_buf; udc->ep0_req.req.length = length; @@ -184,7 +179,7 @@ static u32 _nbu2ss_get_begin_ram_address(struct nbu2ss_udc *udc) u32 num, buf_type; u32 data, last_ram_adr, use_ram_size; - struct ep_regs *p_ep_regs; + struct ep_regs __iomem *p_ep_regs; last_ram_adr = (D_RAM_SIZE_CTRL / sizeof(u32)) * 2; use_ram_size = 0; @@ -377,7 +372,7 @@ static void _nbu2ss_ep_dma_exit(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) { u32 num; u32 data; - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; if (udc->vbus_active == 0) return; /* VBUS OFF */ @@ -408,7 +403,7 @@ static void _nbu2ss_ep_dma_exit(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) /* Abort DMA */ static void _nbu2ss_ep_dma_abort(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) { - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; _nbu2ss_bitclr(&preg->EP_DCR[ep->epnum - 1].EP_DCR1, DCR1_EPN_REQEN); mdelay(DMA_DISABLE_TIME); /* DCR1_EPN_REQEN Clear */ @@ -417,16 +412,12 @@ static void _nbu2ss_ep_dma_abort(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) /*-------------------------------------------------------------------------*/ /* Start IN Transfer */ -static void _nbu2ss_ep_in_end( - struct nbu2ss_udc *udc, - u32 epnum, - u32 data32, - u32 length -) +static void _nbu2ss_ep_in_end(struct nbu2ss_udc *udc, + u32 epnum, u32 data32, u32 length) { u32 data; u32 num; - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; if (length >= sizeof(u32)) return; @@ -460,12 +451,9 @@ static void _nbu2ss_ep_in_end( #ifdef USE_DMA /*-------------------------------------------------------------------------*/ -static void _nbu2ss_dma_map_single( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req, - u8 direct -) +static void _nbu2ss_dma_map_single(struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req, u8 direct) { if (req->req.dma == DMA_ADDR_INVALID) { if (req->unaligned) { @@ -493,12 +481,9 @@ static void _nbu2ss_dma_map_single( } /*-------------------------------------------------------------------------*/ -static void _nbu2ss_dma_unmap_single( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req, - u8 direct -) +static void _nbu2ss_dma_unmap_single(struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req, u8 direct) { u8 data[4]; u8 *p; @@ -669,10 +654,8 @@ static int EP0_receive_NULL(struct nbu2ss_udc *udc, bool pid_flag) } /*-------------------------------------------------------------------------*/ -static int _nbu2ss_ep0_in_transfer( - struct nbu2ss_udc *udc, - struct nbu2ss_req *req -) +static int _nbu2ss_ep0_in_transfer(struct nbu2ss_udc *udc, + struct nbu2ss_req *req) { u8 *p_buffer; /* IN Data Buffer */ u32 data; @@ -726,10 +709,8 @@ static int _nbu2ss_ep0_in_transfer( } /*-------------------------------------------------------------------------*/ -static int _nbu2ss_ep0_out_transfer( - struct nbu2ss_udc *udc, - struct nbu2ss_req *req -) +static int _nbu2ss_ep0_out_transfer(struct nbu2ss_udc *udc, + struct nbu2ss_req *req) { u8 *p_buffer; u32 i_remain_size; @@ -803,12 +784,8 @@ static int _nbu2ss_ep0_out_transfer( } /*-------------------------------------------------------------------------*/ -static int _nbu2ss_out_dma( - struct nbu2ss_udc *udc, - struct nbu2ss_req *req, - u32 num, - u32 length -) +static int _nbu2ss_out_dma(struct nbu2ss_udc *udc, struct nbu2ss_req *req, + u32 num, u32 length) { dma_addr_t p_buffer; u32 mpkt; @@ -817,7 +794,7 @@ static int _nbu2ss_out_dma( u32 burst = 1; u32 data; int result = -EINVAL; - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; if (req->dma_flag) return 1; /* DMA is forwarded */ @@ -866,12 +843,8 @@ static int _nbu2ss_out_dma( } /*-------------------------------------------------------------------------*/ -static int _nbu2ss_epn_out_pio( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req, - u32 length -) +static int _nbu2ss_epn_out_pio(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep, + struct nbu2ss_req *req, u32 length) { u8 *p_buffer; u32 i; @@ -880,7 +853,7 @@ static int _nbu2ss_epn_out_pio( union usb_reg_access temp_32; union usb_reg_access *p_buf_32; int result = 0; - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; if (req->dma_flag) return 1; /* DMA is forwarded */ @@ -925,12 +898,8 @@ static int _nbu2ss_epn_out_pio( } /*-------------------------------------------------------------------------*/ -static int _nbu2ss_epn_out_data( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req, - u32 data_size -) +static int _nbu2ss_epn_out_data(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep, + struct nbu2ss_req *req, u32 data_size) { u32 num; u32 i_buf_size; @@ -955,16 +924,14 @@ static int _nbu2ss_epn_out_data( } /*-------------------------------------------------------------------------*/ -static int _nbu2ss_epn_out_transfer( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req -) +static int _nbu2ss_epn_out_transfer(struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req) { u32 num; u32 i_recv_length; int result = 1; - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; if (ep->epnum == 0) return -EINVAL; @@ -1011,13 +978,8 @@ static int _nbu2ss_epn_out_transfer( } /*-------------------------------------------------------------------------*/ -static int _nbu2ss_in_dma( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req, - u32 num, - u32 length -) +static int _nbu2ss_in_dma(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep, + struct nbu2ss_req *req, u32 num, u32 length) { dma_addr_t p_buffer; u32 mpkt; /* MaxPacketSize */ @@ -1026,7 +988,7 @@ static int _nbu2ss_in_dma( u32 i_write_length; u32 data; int result = -EINVAL; - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; if (req->dma_flag) return 1; /* DMA is forwarded */ @@ -1087,12 +1049,8 @@ static int _nbu2ss_in_dma( } /*-------------------------------------------------------------------------*/ -static int _nbu2ss_epn_in_pio( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req, - u32 length -) +static int _nbu2ss_epn_in_pio(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep, + struct nbu2ss_req *req, u32 length) { u8 *p_buffer; u32 i; @@ -1101,7 +1059,7 @@ static int _nbu2ss_epn_in_pio( union usb_reg_access temp_32; union usb_reg_access *p_buf_32 = NULL; int result = 0; - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; if (req->dma_flag) return 1; /* DMA is forwarded */ @@ -1140,12 +1098,8 @@ static int _nbu2ss_epn_in_pio( } /*-------------------------------------------------------------------------*/ -static int _nbu2ss_epn_in_data( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req, - u32 data_size -) +static int _nbu2ss_epn_in_data(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep, + struct nbu2ss_req *req, u32 data_size) { u32 num; int nret = 1; @@ -1167,11 +1121,8 @@ static int _nbu2ss_epn_in_data( } /*-------------------------------------------------------------------------*/ -static int _nbu2ss_epn_in_transfer( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req -) +static int _nbu2ss_epn_in_transfer(struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, struct nbu2ss_req *req) { u32 num; u32 i_buf_size; @@ -1208,11 +1159,10 @@ static int _nbu2ss_epn_in_transfer( } /*-------------------------------------------------------------------------*/ -static int _nbu2ss_start_transfer( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req, - bool bflag) +static int _nbu2ss_start_transfer(struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req, + bool bflag) { int nret = -EINVAL; @@ -1287,9 +1237,7 @@ static void _nbu2ss_restert_transfer(struct nbu2ss_ep *ep) /*-------------------------------------------------------------------------*/ /* Endpoint Toggle Reset */ -static void _nbu2ss_endpoint_toggle_reset( - struct nbu2ss_udc *udc, - u8 ep_adrs) +static void _nbu2ss_endpoint_toggle_reset(struct nbu2ss_udc *udc, u8 ep_adrs) { u8 num; u32 data; @@ -1309,15 +1257,13 @@ static void _nbu2ss_endpoint_toggle_reset( /*-------------------------------------------------------------------------*/ /* Endpoint STALL set */ -static void _nbu2ss_set_endpoint_stall( - struct nbu2ss_udc *udc, - u8 ep_adrs, - bool bstall) +static void _nbu2ss_set_endpoint_stall(struct nbu2ss_udc *udc, + u8 ep_adrs, bool bstall) { u8 num, epnum; u32 data; struct nbu2ss_ep *ep; - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; if ((ep_adrs == 0) || (ep_adrs == 0x80)) { if (bstall) { @@ -1387,11 +1333,8 @@ static void _nbu2ss_set_test_mode(struct nbu2ss_udc *udc, u32 mode) } /*-------------------------------------------------------------------------*/ -static int _nbu2ss_set_feature_device( - struct nbu2ss_udc *udc, - u16 selector, - u16 wIndex -) +static int _nbu2ss_set_feature_device(struct nbu2ss_udc *udc, + u16 selector, u16 wIndex) { int result = -EOPNOTSUPP; @@ -1421,7 +1364,7 @@ static int _nbu2ss_get_ep_stall(struct nbu2ss_udc *udc, u8 ep_adrs) { u8 epnum; u32 data = 0, bit_data; - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; epnum = ep_adrs & ~USB_ENDPOINT_DIR_MASK; if (epnum == 0) { @@ -1449,8 +1392,8 @@ static inline int _nbu2ss_req_feature(struct nbu2ss_udc *udc, bool bset) { u8 recipient = (u8)(udc->ctrl.bRequestType & USB_RECIP_MASK); u8 direction = (u8)(udc->ctrl.bRequestType & USB_DIR_IN); - u16 selector = udc->ctrl.wValue; - u16 wIndex = udc->ctrl.wIndex; + u16 selector = le16_to_cpu(udc->ctrl.wValue); + u16 wIndex = le16_to_cpu(udc->ctrl.wIndex); u8 ep_adrs; int result = -EOPNOTSUPP; @@ -1507,16 +1450,14 @@ static inline enum usb_device_speed _nbu2ss_get_speed(struct nbu2ss_udc *udc) } /*-------------------------------------------------------------------------*/ -static void _nbu2ss_epn_set_stall( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep -) +static void _nbu2ss_epn_set_stall(struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep) { u8 ep_adrs; u32 regdata; int limit_cnt = 0; - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; if (ep->direct == USB_DIR_IN) { for (limit_cnt = 0 @@ -1549,8 +1490,8 @@ static int std_req_get_status(struct nbu2ss_udc *udc) if ((udc->ctrl.wValue != 0x0000) || (direction != USB_DIR_IN)) return result; - length = min_t(u16, udc->ctrl.wLength, sizeof(status_data)); - + length = + min_t(u16, le16_to_cpu(udc->ctrl.wLength), sizeof(status_data)); switch (recipient) { case USB_RECIP_DEVICE: if (udc->ctrl.wIndex == 0x0000) { @@ -1565,8 +1506,8 @@ static int std_req_get_status(struct nbu2ss_udc *udc) break; case USB_RECIP_ENDPOINT: - if (0x0000 == (udc->ctrl.wIndex & 0xFF70)) { - ep_adrs = (u8)(udc->ctrl.wIndex & 0xFF); + if (0x0000 == (le16_to_cpu(udc->ctrl.wIndex) & 0xFF70)) { + ep_adrs = (u8)(le16_to_cpu(udc->ctrl.wIndex) & 0xFF); result = _nbu2ss_get_ep_stall(udc, ep_adrs); if (result > 0) @@ -1606,7 +1547,7 @@ static int std_req_set_feature(struct nbu2ss_udc *udc) static int std_req_set_address(struct nbu2ss_udc *udc) { int result = 0; - u32 wValue = udc->ctrl.wValue; + u32 wValue = le16_to_cpu(udc->ctrl.wValue); if ((udc->ctrl.bRequestType != 0x00) || (udc->ctrl.wIndex != 0x0000) || @@ -1628,7 +1569,7 @@ static int std_req_set_address(struct nbu2ss_udc *udc) /*-------------------------------------------------------------------------*/ static int std_req_set_configuration(struct nbu2ss_udc *udc) { - u32 config_value = (u32)(udc->ctrl.wValue & 0x00ff); + u32 config_value = (u32)(le16_to_cpu(udc->ctrl.wValue) & 0x00ff); if ((udc->ctrl.wIndex != 0x0000) || (udc->ctrl.wLength != 0x0000) || @@ -1882,10 +1823,9 @@ static inline void _nbu2ss_ep0_int(struct nbu2ss_udc *udc) } /*-------------------------------------------------------------------------*/ -static void _nbu2ss_ep_done( - struct nbu2ss_ep *ep, - struct nbu2ss_req *req, - int status) +static void _nbu2ss_ep_done(struct nbu2ss_ep *ep, + struct nbu2ss_req *req, + int status) { struct nbu2ss_udc *udc = ep->udc; @@ -1916,15 +1856,14 @@ static void _nbu2ss_ep_done( } /*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_epn_in_int( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req) +static inline void _nbu2ss_epn_in_int(struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req) { int result = 0; u32 status; - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; if (req->dma_flag) return; /* DMA is forwarded */ @@ -1960,10 +1899,9 @@ static inline void _nbu2ss_epn_in_int( } /*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_epn_out_int( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req) +static inline void _nbu2ss_epn_out_int(struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req) { int result; @@ -1973,10 +1911,9 @@ static inline void _nbu2ss_epn_out_int( } /*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_epn_in_dma_int( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req) +static inline void _nbu2ss_epn_in_dma_int(struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req) { u32 mpkt; u32 size; @@ -2010,16 +1947,15 @@ static inline void _nbu2ss_epn_in_dma_int( } /*-------------------------------------------------------------------------*/ -static inline void _nbu2ss_epn_out_dma_int( - struct nbu2ss_udc *udc, - struct nbu2ss_ep *ep, - struct nbu2ss_req *req) +static inline void _nbu2ss_epn_out_dma_int(struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req) { int i; u32 num; u32 dmacnt, ep_dmacnt; u32 mpkt; - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; num = ep->epnum - 1; @@ -2195,7 +2131,7 @@ static int _nbu2ss_pullup(struct nbu2ss_udc *udc, int is_on) /*-------------------------------------------------------------------------*/ static void _nbu2ss_fifo_flush(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) { - struct fc_regs *p = udc->p_regs; + struct fc_regs __iomem *p = udc->p_regs; if (udc->vbus_active == 0) return; @@ -2413,7 +2349,7 @@ static irqreturn_t _nbu2ss_udc_irq(int irq, void *_udc) u32 epnum, int_bit; struct nbu2ss_udc *udc = (struct nbu2ss_udc *)_udc; - struct fc_regs *preg = udc->p_regs; + struct fc_regs __iomem *preg = udc->p_regs; if (gpio_get_value(VBUS_VALUE) == 0) { _nbu2ss_writel(&preg->USB_INT_STA, ~USB_INT_STA_RW); @@ -2478,9 +2414,8 @@ static irqreturn_t _nbu2ss_udc_irq(int irq, void *_udc) /*-------------------------------------------------------------------------*/ /* usb_ep_ops */ -static int nbu2ss_ep_enable( - struct usb_ep *_ep, - const struct usb_endpoint_descriptor *desc) +static int nbu2ss_ep_enable(struct usb_ep *_ep, + const struct usb_endpoint_descriptor *desc) { u8 ep_type; unsigned long flags; @@ -2568,9 +2503,8 @@ static int nbu2ss_ep_disable(struct usb_ep *_ep) } /*-------------------------------------------------------------------------*/ -static struct usb_request *nbu2ss_ep_alloc_request( - struct usb_ep *ep, - gfp_t gfp_flags) +static struct usb_request *nbu2ss_ep_alloc_request(struct usb_ep *ep, + gfp_t gfp_flags) { struct nbu2ss_req *req; @@ -2587,9 +2521,8 @@ static struct usb_request *nbu2ss_ep_alloc_request( } /*-------------------------------------------------------------------------*/ -static void nbu2ss_ep_free_request( - struct usb_ep *_ep, - struct usb_request *_req) +static void nbu2ss_ep_free_request(struct usb_ep *_ep, + struct usb_request *_req) { struct nbu2ss_req *req; @@ -2601,10 +2534,8 @@ static void nbu2ss_ep_free_request( } /*-------------------------------------------------------------------------*/ -static int nbu2ss_ep_queue( - struct usb_ep *_ep, - struct usb_request *_req, - gfp_t gfp_flags) +static int nbu2ss_ep_queue(struct usb_ep *_ep, + struct usb_request *_req, gfp_t gfp_flags) { struct nbu2ss_req *req; struct nbu2ss_ep *ep; @@ -2708,9 +2639,7 @@ static int nbu2ss_ep_queue( } /*-------------------------------------------------------------------------*/ -static int nbu2ss_ep_dequeue( - struct usb_ep *_ep, - struct usb_request *_req) +static int nbu2ss_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) { struct nbu2ss_req *req; struct nbu2ss_ep *ep; @@ -2804,7 +2733,7 @@ static int nbu2ss_ep_fifo_status(struct usb_ep *_ep) struct nbu2ss_ep *ep; struct nbu2ss_udc *udc; unsigned long flags; - struct fc_regs *preg; + struct fc_regs __iomem *preg; if (!_ep) { pr_err("%s, bad param\n", __func__); @@ -3021,10 +2950,8 @@ static int nbu2ss_gad_pullup(struct usb_gadget *pgadget, int is_on) } /*-------------------------------------------------------------------------*/ -static int nbu2ss_gad_ioctl( - struct usb_gadget *pgadget, - unsigned int code, - unsigned long param) +static int nbu2ss_gad_ioctl(struct usb_gadget *pgadget, + unsigned int code, unsigned long param) { return 0; } @@ -3113,9 +3040,8 @@ static void nbu2ss_drv_ep_init(struct nbu2ss_udc *udc) /*-------------------------------------------------------------------------*/ /* platform_driver */ -static int nbu2ss_drv_contest_init( - struct platform_device *pdev, - struct nbu2ss_udc *udc) +static int nbu2ss_drv_contest_init(struct platform_device *pdev, + struct nbu2ss_udc *udc) { spin_lock_init(&udc->lock); udc->dev = &pdev->dev; @@ -3177,7 +3103,7 @@ static int nbu2ss_drv_probe(struct platform_device *pdev) 0, driver_name, udc); /* IO Memory */ - udc->p_regs = (struct fc_regs *)mmio_base; + udc->p_regs = (struct fc_regs __iomem *)mmio_base; /* USB Function Controller Interrupt */ if (status != 0) { diff --git a/drivers/staging/emxx_udc/emxx_udc.h b/drivers/staging/emxx_udc/emxx_udc.h @@ -582,7 +582,7 @@ struct nbu2ss_udc { u32 curr_config; /* Current Configuration Number */ - struct fc_regs *p_regs; + struct fc_regs __iomem *p_regs; }; /* USB register access structure */ diff --git a/drivers/staging/erofs/Kconfig b/drivers/staging/erofs/Kconfig @@ -90,8 +90,9 @@ config EROFS_FS_IO_MAX_RETRIES config EROFS_FS_ZIP bool "EROFS Data Compresssion Support" depends on EROFS_FS + select LZ4_DECOMPRESS help - Currently we support VLE Compression only. + Currently we support LZ4 VLE Compression only. Play at your own risk. If you don't want to use compression feature, say N. diff --git a/drivers/staging/erofs/Makefile b/drivers/staging/erofs/Makefile @@ -9,5 +9,5 @@ obj-$(CONFIG_EROFS_FS) += erofs.o ccflags-y += -I$(src)/include erofs-objs := super.o inode.o data.o namei.o dir.o utils.o erofs-$(CONFIG_EROFS_FS_XATTR) += xattr.o -erofs-$(CONFIG_EROFS_FS_ZIP) += unzip_vle.o unzip_lz4.o unzip_vle_lz4.o +erofs-$(CONFIG_EROFS_FS_ZIP) += unzip_vle.o unzip_vle_lz4.o diff --git a/drivers/staging/erofs/TODO b/drivers/staging/erofs/TODO @@ -23,13 +23,14 @@ TODO List: - data deduplication and other useful features. -erofs-mkfs (preview version) binaries for i386 / x86_64 are available at: - - https://github.com/hsiangkao/erofs_mkfs_binary - -It is still in progress opening mkfs source code to public, -in any case an open-source mkfs will be released in the near future. - +The following git tree provides the file system user-space +tools under development (ex, formatting tool mkfs.erofs): +>> git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs-utils.git + +The open-source development of erofs-utils is at the early stage. +Contact the original author Li Guifu <bluce.liguifu@huawei.com> and +the co-maintainer Fang Wei <fangwei1@huawei.com> for the latest news +and more details. Code, suggestions, etc, are welcome. Please feel free to ask and send patches, diff --git a/drivers/staging/erofs/data.c b/drivers/staging/erofs/data.c @@ -40,7 +40,7 @@ static inline void read_endio(struct bio *bio) /* prio -- true is used for dir */ struct page *__erofs_get_meta_page(struct super_block *sb, - erofs_blk_t blkaddr, bool prio, bool nofail) + erofs_blk_t blkaddr, bool prio, bool nofail) { struct inode *const bd_inode = sb->s_bdev->bd_inode; struct address_space *const mapping = bd_inode->i_mapping; @@ -53,7 +53,7 @@ struct page *__erofs_get_meta_page(struct super_block *sb, repeat: page = find_or_create_page(mapping, blkaddr, gfp); - if (unlikely(page == NULL)) { + if (unlikely(!page)) { DBG_BUGON(nofail); return ERR_PTR(-ENOMEM); } @@ -76,7 +76,7 @@ repeat: } __submit_bio(bio, REQ_OP_READ, - REQ_META | (prio ? REQ_PRIO : 0)); + REQ_META | (prio ? REQ_PRIO : 0)); lock_page(page); @@ -107,8 +107,8 @@ err_out: } static int erofs_map_blocks_flatmode(struct inode *inode, - struct erofs_map_blocks *map, - int flags) + struct erofs_map_blocks *map, + int flags) { int err = 0; erofs_blk_t nblocks, lastblk; @@ -151,7 +151,7 @@ static int erofs_map_blocks_flatmode(struct inode *inode, map->m_flags |= EROFS_MAP_META; } else { errln("internal error @ nid: %llu (size %llu), m_la 0x%llx", - vi->nid, inode->i_size, map->m_la); + vi->nid, inode->i_size, map->m_la); DBG_BUGON(1); err = -EIO; goto err_out; @@ -167,16 +167,17 @@ err_out: #ifdef CONFIG_EROFS_FS_ZIP extern int z_erofs_map_blocks_iter(struct inode *, - struct erofs_map_blocks *, struct page **, int); + struct erofs_map_blocks *, + struct page **, int); #endif int erofs_map_blocks_iter(struct inode *inode, - struct erofs_map_blocks *map, - struct page **mpage_ret, int flags) + struct erofs_map_blocks *map, + struct page **mpage_ret, int flags) { /* by default, reading raw data never use erofs_map_blocks_iter */ if (unlikely(!is_inode_layout_compression(inode))) { - if (*mpage_ret != NULL) + if (*mpage_ret) put_page(*mpage_ret); *mpage_ret = NULL; @@ -192,27 +193,26 @@ int erofs_map_blocks_iter(struct inode *inode, } int erofs_map_blocks(struct inode *inode, - struct erofs_map_blocks *map, int flags) + struct erofs_map_blocks *map, int flags) { if (unlikely(is_inode_layout_compression(inode))) { struct page *mpage = NULL; int err; err = erofs_map_blocks_iter(inode, map, &mpage, flags); - if (mpage != NULL) + if (mpage) put_page(mpage); return err; } return erofs_map_blocks_flatmode(inode, map, flags); } -static inline struct bio *erofs_read_raw_page( - struct bio *bio, - struct address_space *mapping, - struct page *page, - erofs_off_t *last_block, - unsigned int nblocks, - bool ra) +static inline struct bio *erofs_read_raw_page(struct bio *bio, + struct address_space *mapping, + struct page *page, + erofs_off_t *last_block, + unsigned int nblocks, + bool ra) { struct inode *inode = mapping->host; erofs_off_t current_block = (erofs_off_t)page->index; @@ -232,15 +232,15 @@ static inline struct bio *erofs_read_raw_page( } /* note that for readpage case, bio also equals to NULL */ - if (bio != NULL && - /* not continuous */ - *last_block + 1 != current_block) { + if (bio && + /* not continuous */ + *last_block + 1 != current_block) { submit_bio_retry: __submit_bio(bio, REQ_OP_READ, 0); bio = NULL; } - if (bio == NULL) { + if (!bio) { struct erofs_map_blocks map = { .m_la = blknr_to_addr(current_block), }; @@ -307,7 +307,7 @@ submit_bio_retry: nblocks = BIO_MAX_PAGES; bio = erofs_grab_bio(inode->i_sb, - blknr, nblocks, read_endio, false); + blknr, nblocks, read_endio, false); if (IS_ERR(bio)) { err = PTR_ERR(bio); @@ -342,7 +342,7 @@ has_updated: unlock_page(page); /* if updated manually, continuous pages has a gap */ - if (bio != NULL) + if (bio) submit_bio_out: __submit_bio(bio, REQ_OP_READ, 0); @@ -361,7 +361,7 @@ static int erofs_raw_access_readpage(struct file *file, struct page *page) trace_erofs_readpage(page, true); bio = erofs_read_raw_page(NULL, page->mapping, - page, &last_block, 1, false); + page, &last_block, 1, false); if (IS_ERR(bio)) return PTR_ERR(bio); @@ -371,8 +371,9 @@ static int erofs_raw_access_readpage(struct file *file, struct page *page) } static int erofs_raw_access_readpages(struct file *filp, - struct address_space *mapping, - struct list_head *pages, unsigned int nr_pages) + struct address_space *mapping, + struct list_head *pages, + unsigned int nr_pages) { erofs_off_t last_block; struct bio *bio = NULL; @@ -389,13 +390,13 @@ static int erofs_raw_access_readpages(struct file *filp, if (!add_to_page_cache_lru(page, mapping, page->index, gfp)) { bio = erofs_read_raw_page(bio, mapping, page, - &last_block, nr_pages, true); + &last_block, nr_pages, true); /* all the page errors are ignored when readahead */ if (IS_ERR(bio)) { pr_err("%s, readahead error at page %lu of nid %llu\n", - __func__, page->index, - EROFS_V(mapping->host)->nid); + __func__, page->index, + EROFS_V(mapping->host)->nid); bio = NULL; } @@ -407,7 +408,7 @@ static int erofs_raw_access_readpages(struct file *filp, DBG_BUGON(!list_empty(pages)); /* the rare case (end in gaps) */ - if (unlikely(bio != NULL)) + if (unlikely(bio)) __submit_bio(bio, REQ_OP_READ, 0); return 0; } diff --git a/drivers/staging/erofs/dir.c b/drivers/staging/erofs/dir.c @@ -53,8 +53,11 @@ static int erofs_fill_dentries(struct dir_context *ctx, strnlen(de_name, maxsize - nameoff) : le16_to_cpu(de[1].nameoff) - nameoff; - /* the corrupted directory found */ - BUG_ON(de_namelen < 0); + /* a corrupted entry is found */ + if (unlikely(de_namelen < 0)) { + DBG_BUGON(1); + return -EIO; + } #ifdef CONFIG_EROFS_FS_DEBUG dbg_namelen = min(EROFS_NAME_LEN - 1, de_namelen); @@ -66,8 +69,8 @@ static int erofs_fill_dentries(struct dir_context *ctx, #endif if (!dir_emit(ctx, de_name, de_namelen, - le64_to_cpu(de->nid), d_type)) - /* stoped by some reason */ + le64_to_cpu(de->nid), d_type)) + /* stopped by some reason */ return 1; ++de; *ofs += sizeof(struct erofs_dirent); diff --git a/drivers/staging/erofs/erofs_fs.h b/drivers/staging/erofs/erofs_fs.h @@ -38,10 +38,6 @@ struct erofs_super_block { /* 80 */__u8 reserved2[48]; /* 128 bytes */ } __packed; -#define __EROFS_BIT(_prefix, _cur, _pre) enum { \ - _prefix ## _cur ## _BIT = _prefix ## _pre ## _BIT + \ - _prefix ## _pre ## _BITS } - /* * erofs inode data mapping: * 0 - inode plain without inline data A: @@ -58,11 +54,13 @@ enum { EROFS_INODE_LAYOUT_INLINE, EROFS_INODE_LAYOUT_MAX }; + +/* bit definitions of inode i_advise */ #define EROFS_I_VERSION_BITS 1 #define EROFS_I_DATA_MAPPING_BITS 3 #define EROFS_I_VERSION_BIT 0 -__EROFS_BIT(EROFS_I_, DATA_MAPPING, VERSION); +#define EROFS_I_DATA_MAPPING_BIT 1 struct erofs_inode_v1 { /* 0 */__le16 i_advise; diff --git a/drivers/staging/erofs/inode.c b/drivers/staging/erofs/inode.c @@ -133,7 +133,13 @@ static int fill_inline_data(struct inode *inode, void *data, return -ENOMEM; m_pofs += vi->inode_isize + vi->xattr_isize; - BUG_ON(m_pofs + inode->i_size > PAGE_SIZE); + + /* inline symlink data shouldn't across page boundary as well */ + if (unlikely(m_pofs + inode->i_size > PAGE_SIZE)) { + DBG_BUGON(1); + kfree(lnk); + return -EIO; + } /* get in-page inline data */ memcpy(lnk, data + m_pofs, inode->i_size); @@ -171,7 +177,7 @@ static int fill_inode(struct inode *inode, int isdir) return PTR_ERR(page); } - BUG_ON(!PageUptodate(page)); + DBG_BUGON(!PageUptodate(page)); data = page_address(page); err = read_inode(inode, data + ofs); diff --git a/drivers/staging/erofs/internal.h b/drivers/staging/erofs/internal.h @@ -39,7 +39,7 @@ #define debugln(x, ...) ((void)0) #define dbg_might_sleep() ((void)0) -#define DBG_BUGON(...) ((void)0) +#define DBG_BUGON(x) ((void)(x)) #endif enum { @@ -194,50 +194,70 @@ struct erofs_workgroup { #define EROFS_LOCKED_MAGIC (INT_MIN | 0xE0F510CCL) -static inline bool erofs_workgroup_try_to_freeze( - struct erofs_workgroup *grp, int v) +#if defined(CONFIG_SMP) +static inline bool erofs_workgroup_try_to_freeze(struct erofs_workgroup *grp, + int val) { -#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) - if (v != atomic_cmpxchg(&grp->refcount, - v, EROFS_LOCKED_MAGIC)) - return false; preempt_disable(); + if (val != atomic_cmpxchg(&grp->refcount, val, EROFS_LOCKED_MAGIC)) { + preempt_enable(); + return false; + } + return true; +} + +static inline void erofs_workgroup_unfreeze(struct erofs_workgroup *grp, + int orig_val) +{ + /* + * other observers should notice all modifications + * in the freezing period. + */ + smp_mb(); + atomic_set(&grp->refcount, orig_val); + preempt_enable(); +} + +static inline int erofs_wait_on_workgroup_freezed(struct erofs_workgroup *grp) +{ + return atomic_cond_read_relaxed(&grp->refcount, + VAL != EROFS_LOCKED_MAGIC); +} #else +static inline bool erofs_workgroup_try_to_freeze(struct erofs_workgroup *grp, + int val) +{ preempt_disable(); - if (atomic_read(&grp->refcount) != v) { + /* no need to spin on UP platforms, let's just disable preemption. */ + if (val != atomic_read(&grp->refcount)) { preempt_enable(); return false; } -#endif return true; } -static inline void erofs_workgroup_unfreeze( - struct erofs_workgroup *grp, int v) +static inline void erofs_workgroup_unfreeze(struct erofs_workgroup *grp, + int orig_val) { -#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) - atomic_set(&grp->refcount, v); -#endif preempt_enable(); } +static inline int erofs_wait_on_workgroup_freezed(struct erofs_workgroup *grp) +{ + int v = atomic_read(&grp->refcount); + + /* workgroup is never freezed on uniprocessor systems */ + DBG_BUGON(v == EROFS_LOCKED_MAGIC); + return v; +} +#endif + static inline bool erofs_workgroup_get(struct erofs_workgroup *grp, int *ocnt) { - const int locked = (int)EROFS_LOCKED_MAGIC; int o; repeat: - o = atomic_read(&grp->refcount); - - /* spin if it is temporarily locked at the reclaim path */ - if (unlikely(o == locked)) { -#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) - do - cpu_relax(); - while (atomic_read(&grp->refcount) == locked); -#endif - goto repeat; - } + o = erofs_wait_on_workgroup_freezed(grp); if (unlikely(o <= 0)) return -1; @@ -250,6 +270,7 @@ repeat: } #define __erofs_workgroup_get(grp) atomic_inc(&(grp)->refcount) +#define __erofs_workgroup_put(grp) atomic_dec(&(grp)->refcount) extern int erofs_workgroup_put(struct erofs_workgroup *grp); @@ -268,12 +289,14 @@ static inline void erofs_workstation_cleanup_all(struct super_block *sb) } #ifdef EROFS_FS_HAS_MANAGED_CACHE -#define EROFS_UNALLOCATED_CACHED_PAGE ((void *)0x5F0EF00D) - extern int erofs_try_to_free_all_cached_pages(struct erofs_sb_info *sbi, struct erofs_workgroup *egrp); extern int erofs_try_to_free_cached_page(struct address_space *mapping, struct page *page); + +#define MNGD_MAPPING(sbi) ((sbi)->managed_cache->i_mapping) +#else +#define MNGD_MAPPING(sbi) (NULL) #endif #define DEFAULT_MAX_SYNC_DECOMPRESS_PAGES 3 diff --git a/drivers/staging/erofs/lz4defs.h b/drivers/staging/erofs/lz4defs.h @@ -1,227 +0,0 @@ -#ifndef __LZ4DEFS_H__ -#define __LZ4DEFS_H__ - -/* - * lz4defs.h -- common and architecture specific defines for the kernel usage - - * LZ4 - Fast LZ compression algorithm - * Copyright (C) 2011-2016, Yann Collet. - * BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php) - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * You can contact the author at : - * - LZ4 homepage : http://www.lz4.org - * - LZ4 source repository : https://github.com/lz4/lz4 - * - * Changed for kernel usage by: - * Sven Schmidt <4sschmid@informatik.uni-hamburg.de> - */ - -#include <asm/unaligned.h> -#include <linux/string.h> /* memset, memcpy */ - -#define FORCE_INLINE __always_inline - -/*-************************************ - * Basic Types - **************************************/ -#include <linux/types.h> - -typedef uint8_t BYTE; -typedef uint16_t U16; -typedef uint32_t U32; -typedef int32_t S32; -typedef uint64_t U64; -typedef uintptr_t uptrval; - -/*-************************************ - * Architecture specifics - **************************************/ -#if defined(CONFIG_64BIT) -#define LZ4_ARCH64 1 -#else -#define LZ4_ARCH64 0 -#endif - -#if defined(__LITTLE_ENDIAN) -#define LZ4_LITTLE_ENDIAN 1 -#else -#define LZ4_LITTLE_ENDIAN 0 -#endif - -/*-************************************ - * Constants - **************************************/ -#define MINMATCH 4 - -#define WILDCOPYLENGTH 8 -#define LASTLITERALS 5 -#define MFLIMIT (WILDCOPYLENGTH + MINMATCH) - -/* Increase this value ==> compression run slower on incompressible data */ -#define LZ4_SKIPTRIGGER 6 - -#define HASH_UNIT sizeof(size_t) - -#define KB (1 << 10) -#define MB (1 << 20) -#define GB (1U << 30) - -#define MAXD_LOG 16 -#define MAX_DISTANCE ((1 << MAXD_LOG) - 1) -#define STEPSIZE sizeof(size_t) - -#define ML_BITS 4 -#define ML_MASK ((1U << ML_BITS) - 1) -#define RUN_BITS (8 - ML_BITS) -#define RUN_MASK ((1U << RUN_BITS) - 1) - -/*-************************************ - * Reading and writing into memory - **************************************/ -static FORCE_INLINE U16 LZ4_read16(const void *ptr) -{ - return get_unaligned((const U16 *)ptr); -} - -static FORCE_INLINE U32 LZ4_read32(const void *ptr) -{ - return get_unaligned((const U32 *)ptr); -} - -static FORCE_INLINE size_t LZ4_read_ARCH(const void *ptr) -{ - return get_unaligned((const size_t *)ptr); -} - -static FORCE_INLINE void LZ4_write16(void *memPtr, U16 value) -{ - put_unaligned(value, (U16 *)memPtr); -} - -static FORCE_INLINE void LZ4_write32(void *memPtr, U32 value) -{ - put_unaligned(value, (U32 *)memPtr); -} - -static FORCE_INLINE U16 LZ4_readLE16(const void *memPtr) -{ - return get_unaligned_le16(memPtr); -} - -static FORCE_INLINE void LZ4_writeLE16(void *memPtr, U16 value) -{ - return put_unaligned_le16(value, memPtr); -} - -static FORCE_INLINE void LZ4_copy8(void *dst, const void *src) -{ -#if LZ4_ARCH64 - U64 a = get_unaligned((const U64 *)src); - - put_unaligned(a, (U64 *)dst); -#else - U32 a = get_unaligned((const U32 *)src); - U32 b = get_unaligned((const U32 *)src + 1); - - put_unaligned(a, (U32 *)dst); - put_unaligned(b, (U32 *)dst + 1); -#endif -} - -/* - * customized variant of memcpy, - * which can overwrite up to 7 bytes beyond dstEnd - */ -static FORCE_INLINE void LZ4_wildCopy(void *dstPtr, - const void *srcPtr, void *dstEnd) -{ - BYTE *d = (BYTE *)dstPtr; - const BYTE *s = (const BYTE *)srcPtr; - BYTE *const e = (BYTE *)dstEnd; - - do { - LZ4_copy8(d, s); - d += 8; - s += 8; - } while (d < e); -} - -static FORCE_INLINE unsigned int LZ4_NbCommonBytes(register size_t val) -{ -#if LZ4_LITTLE_ENDIAN - return __ffs(val) >> 3; -#else - return (BITS_PER_LONG - 1 - __fls(val)) >> 3; -#endif -} - -static FORCE_INLINE unsigned int LZ4_count( - const BYTE *pIn, - const BYTE *pMatch, - const BYTE *pInLimit) -{ - const BYTE *const pStart = pIn; - - while (likely(pIn < pInLimit - (STEPSIZE - 1))) { - size_t const diff = LZ4_read_ARCH(pMatch) ^ LZ4_read_ARCH(pIn); - - if (!diff) { - pIn += STEPSIZE; - pMatch += STEPSIZE; - continue; - } - - pIn += LZ4_NbCommonBytes(diff); - - return (unsigned int)(pIn - pStart); - } - -#if LZ4_ARCH64 - if ((pIn < (pInLimit - 3)) - && (LZ4_read32(pMatch) == LZ4_read32(pIn))) { - pIn += 4; - pMatch += 4; - } -#endif - - if ((pIn < (pInLimit - 1)) - && (LZ4_read16(pMatch) == LZ4_read16(pIn))) { - pIn += 2; - pMatch += 2; - } - - if ((pIn < pInLimit) && (*pMatch == *pIn)) - pIn++; - - return (unsigned int)(pIn - pStart); -} - -typedef enum { noLimit = 0, limitedOutput = 1 } limitedOutput_directive; -typedef enum { byPtr, byU32, byU16 } tableType_t; - -typedef enum { noDict = 0, withPrefix64k, usingExtDict } dict_directive; -typedef enum { noDictIssue = 0, dictSmall } dictIssue_directive; - -typedef enum { endOnOutputSize = 0, endOnInputSize = 1 } endCondition_directive; -typedef enum { full = 0, partial = 1 } earlyEnd_directive; - -#endif diff --git a/drivers/staging/erofs/super.c b/drivers/staging/erofs/super.c @@ -40,7 +40,6 @@ static int __init erofs_init_inode_cache(void) static void erofs_exit_inode_cache(void) { - BUG_ON(erofs_inode_cachep == NULL); kmem_cache_destroy(erofs_inode_cachep); } @@ -303,8 +302,8 @@ static int managed_cache_releasepage(struct page *page, gfp_t gfp_mask) int ret = 1; /* 0 - busy */ struct address_space *const mapping = page->mapping; - BUG_ON(!PageLocked(page)); - BUG_ON(mapping->a_ops != &managed_cache_aops); + DBG_BUGON(!PageLocked(page)); + DBG_BUGON(mapping->a_ops != &managed_cache_aops); if (PagePrivate(page)) ret = erofs_try_to_free_cached_page(mapping, page); @@ -317,10 +316,10 @@ static void managed_cache_invalidatepage(struct page *page, { const unsigned int stop = length + offset; - BUG_ON(!PageLocked(page)); + DBG_BUGON(!PageLocked(page)); - /* Check for overflow */ - BUG_ON(stop > PAGE_SIZE || stop < length); + /* Check for potential overflow in debug mode */ + DBG_BUGON(stop > PAGE_SIZE || stop < length); if (offset == 0 && stop == PAGE_SIZE) while (!managed_cache_releasepage(page, GFP_NOFS)) @@ -442,12 +441,6 @@ static int erofs_read_super(struct super_block *sb, erofs_register_super(sb); - /* - * We already have a positive dentry, which was instantiated - * by d_make_root. Just need to d_rehash it. - */ - d_rehash(sb->s_root); - if (!silent) infoln("mounted on %s with opts: %s.", dev_name, (char *)data); @@ -655,7 +648,7 @@ static int erofs_remount(struct super_block *sb, int *flags, char *data) unsigned int org_inject_rate = erofs_get_fault_rate(sbi); int err; - BUG_ON(!sb_rdonly(sb)); + DBG_BUGON(!sb_rdonly(sb)); err = parse_options(sb, data); if (err) goto out; diff --git a/drivers/staging/erofs/unzip_lz4.c b/drivers/staging/erofs/unzip_lz4.c @@ -1,251 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause -/* - * linux/drivers/staging/erofs/unzip_lz4.c - * - * Copyright (C) 2018 HUAWEI, Inc. - * http://www.huawei.com/ - * Created by Gao Xiang <gaoxiang25@huawei.com> - * - * Original code taken from 'linux/lib/lz4/lz4_decompress.c' - */ - -/* - * LZ4 - Fast LZ compression algorithm - * Copyright (C) 2011 - 2016, Yann Collet. - * BSD 2 - Clause License (http://www.opensource.org/licenses/bsd - license.php) - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * You can contact the author at : - * - LZ4 homepage : http://www.lz4.org - * - LZ4 source repository : https://github.com/lz4/lz4 - * - * Changed for kernel usage by: - * Sven Schmidt <4sschmid@informatik.uni-hamburg.de> - */ -#include "internal.h" -#include <asm/unaligned.h> -#include "lz4defs.h" - -/* - * no public solution to solve our requirement yet. - * see: <required buffer size for LZ4_decompress_safe_partial> - * https://groups.google.com/forum/#!topic/lz4c/_3kkz5N6n00 - */ -static FORCE_INLINE int customized_lz4_decompress_safe_partial( - const void * const source, - void * const dest, - int inputSize, - int outputSize) -{ - /* Local Variables */ - const BYTE *ip = (const BYTE *) source; - const BYTE * const iend = ip + inputSize; - - BYTE *op = (BYTE *) dest; - BYTE * const oend = op + outputSize; - BYTE *cpy; - - static const unsigned int dec32table[] = { 0, 1, 2, 1, 4, 4, 4, 4 }; - static const int dec64table[] = { 0, 0, 0, -1, 0, 1, 2, 3 }; - - /* Empty output buffer */ - if (unlikely(outputSize == 0)) - return ((inputSize == 1) && (*ip == 0)) ? 0 : -1; - - /* Main Loop : decode sequences */ - while (1) { - size_t length; - const BYTE *match; - size_t offset; - - /* get literal length */ - unsigned int const token = *ip++; - - length = token>>ML_BITS; - - if (length == RUN_MASK) { - unsigned int s; - - do { - s = *ip++; - length += s; - } while ((ip < iend - RUN_MASK) & (s == 255)); - - if (unlikely((size_t)(op + length) < (size_t)(op))) { - /* overflow detection */ - goto _output_error; - } - if (unlikely((size_t)(ip + length) < (size_t)(ip))) { - /* overflow detection */ - goto _output_error; - } - } - - /* copy literals */ - cpy = op + length; - if ((cpy > oend - WILDCOPYLENGTH) || - (ip + length > iend - (2 + 1 + LASTLITERALS))) { - if (cpy > oend) { - memcpy(op, ip, length = oend - op); - op += length; - break; - } - - if (unlikely(ip + length > iend)) { - /* - * Error : - * read attempt beyond - * end of input buffer - */ - goto _output_error; - } - - memcpy(op, ip, length); - ip += length; - op += length; - - if (ip > iend - 2) - break; - /* Necessarily EOF, due to parsing restrictions */ - /* break; */ - } else { - LZ4_wildCopy(op, ip, cpy); - ip += length; - op = cpy; - } - - /* get offset */ - offset = LZ4_readLE16(ip); - ip += 2; - match = op - offset; - - if (unlikely(match < (const BYTE *)dest)) { - /* Error : offset outside buffers */ - goto _output_error; - } - - /* get matchlength */ - length = token & ML_MASK; - if (length == ML_MASK) { - unsigned int s; - - do { - s = *ip++; - - if (ip > iend - LASTLITERALS) - goto _output_error; - - length += s; - } while (s == 255); - - if (unlikely((size_t)(op + length) < (size_t)op)) { - /* overflow detection */ - goto _output_error; - } - } - - length += MINMATCH; - - /* copy match within block */ - cpy = op + length; - - if (unlikely(cpy >= oend - WILDCOPYLENGTH)) { - if (cpy >= oend) { - while (op < oend) - *op++ = *match++; - break; - } - goto __match; - } - - /* costs ~1%; silence an msan warning when offset == 0 */ - LZ4_write32(op, (U32)offset); - - if (unlikely(offset < 8)) { - const int dec64 = dec64table[offset]; - - op[0] = match[0]; - op[1] = match[1]; - op[2] = match[2]; - op[3] = match[3]; - match += dec32table[offset]; - memcpy(op + 4, match, 4); - match -= dec64; - } else { - LZ4_copy8(op, match); - match += 8; - } - - op += 8; - - if (unlikely(cpy > oend - 12)) { - BYTE * const oCopyLimit = oend - (WILDCOPYLENGTH - 1); - - if (op < oCopyLimit) { - LZ4_wildCopy(op, match, oCopyLimit); - match += oCopyLimit - op; - op = oCopyLimit; - } -__match: - while (op < cpy) - *op++ = *match++; - } else { - LZ4_copy8(op, match); - - if (length > 16) - LZ4_wildCopy(op + 8, match + 8, cpy); - } - - op = cpy; /* correction */ - } - DBG_BUGON((void *)ip - source > inputSize); - DBG_BUGON((void *)op - dest > outputSize); - - /* Nb of output bytes decoded */ - return (int) ((void *)op - dest); - - /* Overflow error detected */ -_output_error: - return -ERANGE; -} - -int z_erofs_unzip_lz4(void *in, void *out, size_t inlen, size_t outlen) -{ - int ret = customized_lz4_decompress_safe_partial(in, - out, inlen, outlen); - - if (ret >= 0) - return ret; - - /* - * LZ4_decompress_safe will return an error code - * (< 0) if decompression failed - */ - errln("%s, failed to decompress, in[%p, %zu] outlen[%p, %zu]", - __func__, in, inlen, out, outlen); - WARN_ON(1); - print_hex_dump(KERN_DEBUG, "raw data [in]: ", DUMP_PREFIX_OFFSET, - 16, 1, in, inlen, true); - print_hex_dump(KERN_DEBUG, "raw data [out]: ", DUMP_PREFIX_OFFSET, - 16, 1, out, outlen, true); - return -EIO; -} - diff --git a/drivers/staging/erofs/unzip_pagevec.h b/drivers/staging/erofs/unzip_pagevec.h @@ -150,7 +150,7 @@ z_erofs_pagevec_ctor_dequeue(struct z_erofs_pagevec_ctor *ctor, erofs_vtptr_t t; if (unlikely(ctor->index >= ctor->nr)) { - BUG_ON(ctor->next == NULL); + DBG_BUGON(!ctor->next); z_erofs_pagevec_ctor_pagedown(ctor, true); } diff --git a/drivers/staging/erofs/unzip_vle.c b/drivers/staging/erofs/unzip_vle.c @@ -15,14 +15,32 @@ #include <trace/events/erofs.h> +/* + * a compressed_pages[] placeholder in order to avoid + * being filled with file pages for in-place decompression. + */ +#define PAGE_UNALLOCATED ((void *)0x5F0E4B1D) + +/* how to allocate cached pages for a workgroup */ +enum z_erofs_cache_alloctype { + DONTALLOC, /* don't allocate any cached pages */ + DELAYEDALLOC, /* delayed allocation (at the time of submitting io) */ +}; + +/* + * tagged pointer with 1-bit tag for all compressed pages + * tag 0 - the page is just found with an extra page reference + */ +typedef tagptr1_t compressed_page_t; + +#define tag_compressed_page_justfound(page) \ + tagptr_fold(compressed_page_t, page, 1) + static struct workqueue_struct *z_erofs_workqueue __read_mostly; static struct kmem_cache *z_erofs_workgroup_cachep __read_mostly; void z_erofs_exit_zip_subsystem(void) { - BUG_ON(z_erofs_workqueue == NULL); - BUG_ON(z_erofs_workgroup_cachep == NULL); - destroy_workqueue(z_erofs_workqueue); kmem_cache_destroy(z_erofs_workgroup_cachep); } @@ -35,21 +53,48 @@ static inline int init_unzip_workqueue(void) * we don't need too many threads, limiting threads * could improve scheduling performance. */ - z_erofs_workqueue = alloc_workqueue("erofs_unzipd", - WQ_UNBOUND | WQ_HIGHPRI | WQ_CPU_INTENSIVE, - onlinecpus + onlinecpus / 4); + z_erofs_workqueue = + alloc_workqueue("erofs_unzipd", + WQ_UNBOUND | WQ_HIGHPRI | WQ_CPU_INTENSIVE, + onlinecpus + onlinecpus / 4); - return z_erofs_workqueue != NULL ? 0 : -ENOMEM; + return z_erofs_workqueue ? 0 : -ENOMEM; +} + +static void init_once(void *ptr) +{ + struct z_erofs_vle_workgroup *grp = ptr; + struct z_erofs_vle_work *const work = + z_erofs_vle_grab_primary_work(grp); + unsigned int i; + + mutex_init(&work->lock); + work->nr_pages = 0; + work->vcnt = 0; + for (i = 0; i < Z_EROFS_CLUSTER_MAX_PAGES; ++i) + grp->compressed_pages[i] = NULL; +} + +static void init_always(struct z_erofs_vle_workgroup *grp) +{ + struct z_erofs_vle_work *const work = + z_erofs_vle_grab_primary_work(grp); + + atomic_set(&grp->obj.refcount, 1); + grp->flags = 0; + + DBG_BUGON(work->nr_pages); + DBG_BUGON(work->vcnt); } int __init z_erofs_init_zip_subsystem(void) { z_erofs_workgroup_cachep = kmem_cache_create("erofs_compress", - Z_EROFS_WORKGROUP_SIZE, 0, - SLAB_RECLAIM_ACCOUNT, NULL); + Z_EROFS_WORKGROUP_SIZE, 0, + SLAB_RECLAIM_ACCOUNT, init_once); - if (z_erofs_workgroup_cachep != NULL) { + if (z_erofs_workgroup_cachep) { if (!init_unzip_workqueue()) return 0; @@ -98,38 +143,58 @@ struct z_erofs_vle_work_builder { { .work = NULL, .role = Z_EROFS_VLE_WORK_PRIMARY_FOLLOWED } #ifdef EROFS_FS_HAS_MANAGED_CACHE - -static bool grab_managed_cache_pages(struct address_space *mapping, - erofs_blk_t start, - struct page **compressed_pages, - int clusterblks, - bool reserve_allocation) +static void preload_compressed_pages(struct z_erofs_vle_work_builder *bl, + struct address_space *mc, + pgoff_t index, + unsigned int clusterpages, + enum z_erofs_cache_alloctype type, + struct list_head *pagepool, + gfp_t gfp) { - bool noio = true; - unsigned int i; + struct page **const pages = bl->compressed_pages; + const unsigned int remaining = bl->compressed_deficit; + bool standalone = true; + unsigned int i, j = 0; - /* TODO: optimize by introducing find_get_pages_range */ - for (i = 0; i < clusterblks; ++i) { - struct page *page, *found; + if (bl->role < Z_EROFS_VLE_WORK_PRIMARY_FOLLOWED) + return; + + gfp = mapping_gfp_constraint(mc, gfp) & ~__GFP_RECLAIM; + + index += clusterpages - remaining; + + for (i = 0; i < remaining; ++i) { + struct page *page; + compressed_page_t t; - if (READ_ONCE(compressed_pages[i]) != NULL) + /* the compressed page was loaded before */ + if (READ_ONCE(pages[i])) continue; - page = found = find_get_page(mapping, start + i); - if (found == NULL) { - noio = false; - if (!reserve_allocation) - continue; - page = EROFS_UNALLOCATED_CACHED_PAGE; + page = find_get_page(mc, index + i); + + if (page) { + t = tag_compressed_page_justfound(page); + } else if (type == DELAYEDALLOC) { + t = tagptr_init(compressed_page_t, PAGE_UNALLOCATED); + } else { /* DONTALLOC */ + if (standalone) + j = i; + standalone = false; + continue; } - if (NULL == cmpxchg(compressed_pages + i, NULL, page)) + if (!cmpxchg_relaxed(&pages[i], NULL, tagptr_cast_ptr(t))) continue; - if (found != NULL) - put_page(found); + if (page) + put_page(page); } - return noio; + bl->compressed_pages += j; + bl->compressed_deficit = remaining - j; + + if (standalone) + bl->role = Z_EROFS_VLE_WORK_PRIMARY; } /* called by erofs_shrinker to get rid of all compressed_pages */ @@ -138,7 +203,7 @@ int erofs_try_to_free_all_cached_pages(struct erofs_sb_info *sbi, { struct z_erofs_vle_workgroup *const grp = container_of(egrp, struct z_erofs_vle_workgroup, obj); - struct address_space *const mapping = sbi->managed_cache->i_mapping; + struct address_space *const mapping = MNGD_MAPPING(sbi); const int clusterpages = erofs_clusterpages(sbi); int i; @@ -149,7 +214,7 @@ int erofs_try_to_free_all_cached_pages(struct erofs_sb_info *sbi, for (i = 0; i < clusterpages; ++i) { struct page *page = grp->compressed_pages[i]; - if (page == NULL || page->mapping != mapping) + if (!page || page->mapping != mapping) continue; /* block other users from reclaiming or migrating the page */ @@ -201,6 +266,17 @@ int erofs_try_to_free_cached_page(struct address_space *mapping, } return ret; } +#else +static void preload_compressed_pages(struct z_erofs_vle_work_builder *bl, + struct address_space *mc, + pgoff_t index, + unsigned int clusterpages, + enum z_erofs_cache_alloctype type, + struct list_head *pagepool, + gfp_t gfp) +{ + /* nowhere to load compressed pages from */ +} #endif /* page_type must be Z_EROFS_PAGE_TYPE_EXCLUSIVE */ @@ -210,7 +286,7 @@ static inline bool try_to_reuse_as_compressed_page( { while (b->compressed_deficit) { --b->compressed_deficit; - if (NULL == cmpxchg(b->compressed_pages++, NULL, page)) + if (!cmpxchg(b->compressed_pages++, NULL, page)) return true; } @@ -250,11 +326,11 @@ static inline bool try_to_claim_workgroup( retry: if (grp->next == Z_EROFS_VLE_WORKGRP_NIL) { /* type 1, nil workgroup */ - if (Z_EROFS_VLE_WORKGRP_NIL != cmpxchg(&grp->next, - Z_EROFS_VLE_WORKGRP_NIL, *owned_head)) + if (cmpxchg(&grp->next, Z_EROFS_VLE_WORKGRP_NIL, + *owned_head) != Z_EROFS_VLE_WORKGRP_NIL) goto retry; - *owned_head = grp; + *owned_head = &grp->next; *hosted = true; } else if (grp->next == Z_EROFS_VLE_WORKGRP_TAIL) { /* @@ -262,8 +338,8 @@ retry: * be careful that its submission itself is governed * by the original owned chain. */ - if (Z_EROFS_VLE_WORKGRP_TAIL != cmpxchg(&grp->next, - Z_EROFS_VLE_WORKGRP_TAIL, *owned_head)) + if (cmpxchg(&grp->next, Z_EROFS_VLE_WORKGRP_TAIL, + *owned_head) != Z_EROFS_VLE_WORKGRP_TAIL) goto retry; *owned_head = Z_EROFS_VLE_WORKGRP_TAIL; @@ -293,7 +369,7 @@ z_erofs_vle_work_lookup(const struct z_erofs_vle_work_finder *f) struct z_erofs_vle_work *work; egrp = erofs_find_workgroup(f->sb, f->idx, &tag); - if (egrp == NULL) { + if (!egrp) { *f->grp_ret = NULL; return NULL; } @@ -366,13 +442,17 @@ z_erofs_vle_work_register(const struct z_erofs_vle_work_finder *f, struct z_erofs_vle_work *work; /* if multiref is disabled, grp should never be nullptr */ - BUG_ON(grp != NULL); + if (unlikely(grp)) { + DBG_BUGON(1); + return ERR_PTR(-EINVAL); + } /* no available workgroup, let's allocate one */ - grp = kmem_cache_zalloc(z_erofs_workgroup_cachep, GFP_NOFS); - if (unlikely(grp == NULL)) + grp = kmem_cache_alloc(z_erofs_workgroup_cachep, GFP_NOFS); + if (unlikely(!grp)) return ERR_PTR(-ENOMEM); + init_always(grp); grp->obj.index = f->idx; grp->llen = map->m_llen; @@ -380,7 +460,6 @@ z_erofs_vle_work_register(const struct z_erofs_vle_work_finder *f, (map->m_flags & EROFS_MAP_ZIPPED) ? Z_EROFS_VLE_WORKGRP_FMT_LZ4 : Z_EROFS_VLE_WORKGRP_FMT_PLAIN); - atomic_set(&grp->obj.refcount, 1); /* new workgrps have been claimed as type 1 */ WRITE_ONCE(grp->next, *f->owned_head); @@ -393,20 +472,24 @@ z_erofs_vle_work_register(const struct z_erofs_vle_work_finder *f, work = z_erofs_vle_grab_primary_work(grp); work->pageofs = f->pageofs; - mutex_init(&work->lock); + /* + * lock all primary followed works before visible to others + * and mutex_trylock *never* fails for a new workgroup. + */ + mutex_trylock(&work->lock); if (gnew) { int err = erofs_register_workgroup(f->sb, &grp->obj, 0); if (err) { + mutex_unlock(&work->lock); kmem_cache_free(z_erofs_workgroup_cachep, grp); return ERR_PTR(-EAGAIN); } } - *f->owned_head = *f->grp_ret = grp; - - mutex_lock(&work->lock); + *f->owned_head = &grp->next; + *f->grp_ret = grp; return work; } @@ -431,7 +514,7 @@ static int z_erofs_vle_work_iter_begin(struct z_erofs_vle_work_builder *builder, }; struct z_erofs_vle_work *work; - DBG_BUGON(builder->work != NULL); + DBG_BUGON(builder->work); /* must be Z_EROFS_WORK_TAIL or the next chained work */ DBG_BUGON(*owned_head == Z_EROFS_VLE_WORKGRP_NIL); @@ -441,7 +524,7 @@ static int z_erofs_vle_work_iter_begin(struct z_erofs_vle_work_builder *builder, repeat: work = z_erofs_vle_work_lookup(&finder); - if (work != NULL) { + if (work) { unsigned int orig_llen; /* increase workgroup `llen' if needed */ @@ -519,7 +602,7 @@ z_erofs_vle_work_iter_end(struct z_erofs_vle_work_builder *builder) { struct z_erofs_vle_work *work = builder->work; - if (work == NULL) + if (!work) return false; z_erofs_pagevec_ctor_exit(&builder->vector, false); @@ -542,7 +625,7 @@ static inline struct page *__stagingpage_alloc(struct list_head *pagepool, { struct page *page = erofs_allocpage(pagepool, gfp); - if (unlikely(page == NULL)) + if (unlikely(!page)) return NULL; page->mapping = Z_EROFS_MAPPING_STAGING; @@ -557,10 +640,9 @@ struct z_erofs_vle_frontend { z_erofs_vle_owned_workgrp_t owned_head; - bool initial; -#if (EROFS_FS_ZIP_CACHE_LVL >= 2) - erofs_off_t cachedzone_la; -#endif + /* used for applying cache strategy on the fly */ + bool backmost; + erofs_off_t headoffset; }; #define VLE_FRONTEND_INIT(__i) { \ @@ -571,7 +653,27 @@ struct z_erofs_vle_frontend { }, \ .builder = VLE_WORK_BUILDER_INIT(), \ .owned_head = Z_EROFS_VLE_WORKGRP_TAIL, \ - .initial = true, } + .backmost = true, } + +#ifdef EROFS_FS_HAS_MANAGED_CACHE +static inline bool +should_alloc_managed_pages(struct z_erofs_vle_frontend *fe, erofs_off_t la) +{ + if (fe->backmost) + return true; + + if (EROFS_FS_ZIP_CACHE_LVL >= 2) + return la < fe->headoffset; + + return false; +} +#else +static inline bool +should_alloc_managed_pages(struct z_erofs_vle_frontend *fe, erofs_off_t la) +{ + return false; +} +#endif static int z_erofs_do_read_page(struct z_erofs_vle_frontend *fe, struct page *page, @@ -587,18 +689,11 @@ static int z_erofs_do_read_page(struct z_erofs_vle_frontend *fe, bool tight = builder_is_followed(builder); struct z_erofs_vle_work *work = builder->work; -#ifdef EROFS_FS_HAS_MANAGED_CACHE - struct address_space *const mngda = sbi->managed_cache->i_mapping; - struct z_erofs_vle_workgroup *grp; - bool noio_outoforder; -#endif - + enum z_erofs_cache_alloctype cache_strategy; enum z_erofs_page_type page_type; unsigned int cur, end, spiltted, index; int err = 0; - trace_erofs_readpage(page, false); - /* register locked file pages as online pages in pack */ z_erofs_onlinepage_init(page); @@ -616,7 +711,7 @@ repeat: debugln("%s: [out-of-range] pos %llu", __func__, offset + cur); if (z_erofs_vle_work_iter_end(builder)) - fe->initial = false; + fe->backmost = false; map->m_la = offset + cur; map->m_llen = 0; @@ -634,20 +729,16 @@ repeat: if (unlikely(err)) goto err_out; -#ifdef EROFS_FS_HAS_MANAGED_CACHE - grp = fe->builder.grp; - - /* let's do out-of-order decompression for noio */ - noio_outoforder = grab_managed_cache_pages(mngda, - erofs_blknr(map->m_pa), - grp->compressed_pages, erofs_blknr(map->m_plen), - /* compressed page caching selection strategy */ - fe->initial | (EROFS_FS_ZIP_CACHE_LVL >= 2 ? - map->m_la < fe->cachedzone_la : 0)); - - if (noio_outoforder && builder_is_followed(builder)) - builder->role = Z_EROFS_VLE_WORK_PRIMARY; -#endif + /* preload all compressed pages (maybe downgrade role if necessary) */ + if (should_alloc_managed_pages(fe, map->m_la)) + cache_strategy = DELAYEDALLOC; + else + cache_strategy = DONTALLOC; + + preload_compressed_pages(builder, MNGD_MAPPING(sbi), + map->m_pa / PAGE_SIZE, + map->m_plen / PAGE_SIZE, + cache_strategy, page_pool, GFP_KERNEL); tight &= builder_is_followed(builder); work = builder->work; @@ -717,13 +808,18 @@ static void z_erofs_vle_unzip_kickoff(void *ptr, int bios) struct z_erofs_vle_unzip_io *io = tagptr_unfold_ptr(t); bool background = tagptr_unfold_tags(t); - if (atomic_add_return(bios, &io->pending_bios)) + if (!background) { + unsigned long flags; + + spin_lock_irqsave(&io->u.wait.lock, flags); + if (!atomic_add_return(bios, &io->pending_bios)) + wake_up_locked(&io->u.wait); + spin_unlock_irqrestore(&io->u.wait.lock, flags); return; + } - if (background) + if (!atomic_add_return(bios, &io->pending_bios)) queue_work(z_erofs_workqueue, &io->u.work); - else - wake_up(&io->u.wait); } static inline void z_erofs_vle_read_endio(struct bio *bio) @@ -732,7 +828,7 @@ static inline void z_erofs_vle_read_endio(struct bio *bio) unsigned int i; struct bio_vec *bvec; #ifdef EROFS_FS_HAS_MANAGED_CACHE - struct address_space *mngda = NULL; + struct address_space *mc = NULL; #endif bio_for_each_segment_all(bvec, bio, i) { @@ -740,21 +836,21 @@ static inline void z_erofs_vle_read_endio(struct bio *bio) bool cachemngd = false; DBG_BUGON(PageUptodate(page)); - BUG_ON(page->mapping == NULL); + DBG_BUGON(!page->mapping); #ifdef EROFS_FS_HAS_MANAGED_CACHE - if (unlikely(mngda == NULL && !z_erofs_is_stagingpage(page))) { + if (unlikely(!mc && !z_erofs_is_stagingpage(page))) { struct inode *const inode = page->mapping->host; struct super_block *const sb = inode->i_sb; - mngda = EROFS_SB(sb)->managed_cache->i_mapping; + mc = MNGD_MAPPING(EROFS_SB(sb)); } /* - * If mngda has not gotten, it equals NULL, + * If mc has not gotten, it equals NULL, * however, page->mapping never be NULL if working properly. */ - cachemngd = (page->mapping == mngda); + cachemngd = (page->mapping == mc); #endif if (unlikely(err)) @@ -778,9 +874,6 @@ static int z_erofs_vle_unzip(struct super_block *sb, struct list_head *page_pool) { struct erofs_sb_info *const sbi = EROFS_SB(sb); -#ifdef EROFS_FS_HAS_MANAGED_CACHE - struct address_space *const mngda = sbi->managed_cache->i_mapping; -#endif const unsigned int clusterpages = erofs_clusterpages(sbi); struct z_erofs_pagevec_ctor ctor; @@ -798,7 +891,7 @@ static int z_erofs_vle_unzip(struct super_block *sb, might_sleep(); work = z_erofs_vle_grab_primary_work(grp); - BUG_ON(!READ_ONCE(work->nr_pages)); + DBG_BUGON(!READ_ONCE(work->nr_pages)); mutex_lock(&work->lock); nr_pages = work->nr_pages; @@ -814,7 +907,7 @@ repeat: sizeof(struct page *), GFP_KERNEL); /* fallback to global pagemap for the lowmem scenario */ - if (unlikely(pages == NULL)) { + if (unlikely(!pages)) { if (nr_pages > Z_EROFS_VLE_VMAP_GLOBAL_PAGES) goto repeat; else { @@ -836,8 +929,8 @@ repeat: page = z_erofs_pagevec_ctor_dequeue(&ctor, &page_type); /* all pages in pagevec ought to be valid */ - DBG_BUGON(page == NULL); - DBG_BUGON(page->mapping == NULL); + DBG_BUGON(!page); + DBG_BUGON(!page->mapping); if (z_erofs_gather_if_stagingpage(page_pool, page)) continue; @@ -847,8 +940,8 @@ repeat: else pagenr = z_erofs_onlinepage_index(page); - BUG_ON(pagenr >= nr_pages); - BUG_ON(pages[pagenr] != NULL); + DBG_BUGON(pagenr >= nr_pages); + DBG_BUGON(pages[pagenr]); pages[pagenr] = page; } @@ -865,15 +958,14 @@ repeat: page = compressed_pages[i]; /* all compressed pages ought to be valid */ - DBG_BUGON(page == NULL); - DBG_BUGON(page->mapping == NULL); + DBG_BUGON(!page); + DBG_BUGON(!page->mapping); if (z_erofs_is_stagingpage(page)) continue; #ifdef EROFS_FS_HAS_MANAGED_CACHE - else if (page->mapping == mngda) { - BUG_ON(PageLocked(page)); - BUG_ON(!PageUptodate(page)); + if (page->mapping == MNGD_MAPPING(sbi)) { + DBG_BUGON(!PageUptodate(page)); continue; } #endif @@ -881,8 +973,8 @@ repeat: /* only non-head page could be reused as a compressed page */ pagenr = z_erofs_onlinepage_index(page); - BUG_ON(pagenr >= nr_pages); - BUG_ON(pages[pagenr] != NULL); + DBG_BUGON(pagenr >= nr_pages); + DBG_BUGON(pages[pagenr]); ++sparsemem_pages; pages[pagenr] = page; @@ -892,9 +984,6 @@ repeat: llen = (nr_pages << PAGE_SHIFT) - work->pageofs; if (z_erofs_vle_workgrp_fmt(grp) == Z_EROFS_VLE_WORKGRP_FMT_PLAIN) { - /* FIXME! this should be fixed in the future */ - BUG_ON(grp->llen != llen); - err = z_erofs_vle_plain_copy(compressed_pages, clusterpages, pages, nr_pages, work->pageofs); goto out; @@ -909,13 +998,11 @@ repeat: if (err != -ENOTSUPP) goto out_percpu; - if (sparsemem_pages >= nr_pages) { - BUG_ON(sparsemem_pages > nr_pages); + if (sparsemem_pages >= nr_pages) goto skip_allocpage; - } for (i = 0; i < nr_pages; ++i) { - if (pages[i] != NULL) + if (pages[i]) continue; pages[i] = __stagingpage_alloc(page_pool, GFP_NOFS); @@ -932,7 +1019,7 @@ skip_allocpage: out: for (i = 0; i < nr_pages; ++i) { page = pages[i]; - DBG_BUGON(page->mapping == NULL); + DBG_BUGON(!page->mapping); /* recycle all individual staging pages */ if (z_erofs_gather_if_stagingpage(page_pool, page)) @@ -949,7 +1036,7 @@ out_percpu: page = compressed_pages[i]; #ifdef EROFS_FS_HAS_MANAGED_CACHE - if (page->mapping == mngda) + if (page->mapping == MNGD_MAPPING(sbi)) continue; #endif /* recycle all individual staging pages */ @@ -992,7 +1079,7 @@ static void z_erofs_vle_unzip_all(struct super_block *sb, /* no possible that 'owned' equals NULL */ DBG_BUGON(owned == Z_EROFS_VLE_WORKGRP_NIL); - grp = owned; + grp = container_of(owned, struct z_erofs_vle_workgroup, next); owned = READ_ONCE(grp->next); z_erofs_vle_unzip(sb, grp, page_pool); @@ -1005,40 +1092,159 @@ static void z_erofs_vle_unzip_wq(struct work_struct *work) struct z_erofs_vle_unzip_io_sb, io.u.work); LIST_HEAD(page_pool); - BUG_ON(iosb->io.head == Z_EROFS_VLE_WORKGRP_TAIL_CLOSED); + DBG_BUGON(iosb->io.head == Z_EROFS_VLE_WORKGRP_TAIL_CLOSED); z_erofs_vle_unzip_all(iosb->sb, &iosb->io, &page_pool); put_pages_list(&page_pool); kvfree(iosb); } -static inline struct z_erofs_vle_unzip_io * -prepare_io_handler(struct super_block *sb, - struct z_erofs_vle_unzip_io *io, - bool background) +static struct page * +pickup_page_for_submission(struct z_erofs_vle_workgroup *grp, + unsigned int nr, + struct list_head *pagepool, + struct address_space *mc, + gfp_t gfp) +{ + /* determined at compile time to avoid too many #ifdefs */ + const bool nocache = __builtin_constant_p(mc) ? !mc : false; + const pgoff_t index = grp->obj.index; + bool tocache = false; + + struct address_space *mapping; + struct page *oldpage, *page; + + compressed_page_t t; + int justfound; + +repeat: + page = READ_ONCE(grp->compressed_pages[nr]); + oldpage = page; + + if (!page) + goto out_allocpage; + + /* + * the cached page has not been allocated and + * an placeholder is out there, prepare it now. + */ + if (!nocache && page == PAGE_UNALLOCATED) { + tocache = true; + goto out_allocpage; + } + + /* process the target tagged pointer */ + t = tagptr_init(compressed_page_t, page); + justfound = tagptr_unfold_tags(t); + page = tagptr_unfold_ptr(t); + + mapping = READ_ONCE(page->mapping); + + /* + * if managed cache is disabled, it's no way to + * get such a cached-like page. + */ + if (nocache) { + /* if managed cache is disabled, it is impossible `justfound' */ + DBG_BUGON(justfound); + + /* and it should be locked, not uptodate, and not truncated */ + DBG_BUGON(!PageLocked(page)); + DBG_BUGON(PageUptodate(page)); + DBG_BUGON(!mapping); + goto out; + } + + /* + * unmanaged (file) pages are all locked solidly, + * therefore it is impossible for `mapping' to be NULL. + */ + if (mapping && mapping != mc) + /* ought to be unmanaged pages */ + goto out; + + lock_page(page); + + /* only true if page reclaim goes wrong, should never happen */ + DBG_BUGON(justfound && PagePrivate(page)); + + /* the page is still in manage cache */ + if (page->mapping == mc) { + WRITE_ONCE(grp->compressed_pages[nr], page); + + if (!PagePrivate(page)) { + /* + * impossible to be !PagePrivate(page) for + * the current restriction as well if + * the page is already in compressed_pages[]. + */ + DBG_BUGON(!justfound); + + justfound = 0; + set_page_private(page, (unsigned long)grp); + SetPagePrivate(page); + } + + /* no need to submit io if it is already up-to-date */ + if (PageUptodate(page)) { + unlock_page(page); + page = NULL; + } + goto out; + } + + /* + * the managed page has been truncated, it's unsafe to + * reuse this one, let's allocate a new cache-managed page. + */ + DBG_BUGON(page->mapping); + DBG_BUGON(!justfound); + + tocache = true; + unlock_page(page); + put_page(page); +out_allocpage: + page = __stagingpage_alloc(pagepool, gfp); + if (oldpage != cmpxchg(&grp->compressed_pages[nr], oldpage, page)) { + list_add(&page->lru, pagepool); + cpu_relax(); + goto repeat; + } + if (nocache || !tocache) + goto out; + if (add_to_page_cache_lru(page, mc, index + nr, gfp)) { + page->mapping = Z_EROFS_MAPPING_STAGING; + goto out; + } + + set_page_private(page, (unsigned long)grp); + SetPagePrivate(page); +out: /* the only exit (for tracing and debugging) */ + return page; +} + +static struct z_erofs_vle_unzip_io * +jobqueue_init(struct super_block *sb, + struct z_erofs_vle_unzip_io *io, + bool foreground) { struct z_erofs_vle_unzip_io_sb *iosb; - if (!background) { + if (foreground) { /* waitqueue available for foreground io */ - BUG_ON(io == NULL); + DBG_BUGON(!io); init_waitqueue_head(&io->u.wait); atomic_set(&io->pending_bios, 0); goto out; } - if (io != NULL) - BUG(); - else { - /* allocate extra io descriptor for background io */ - iosb = kvzalloc(sizeof(struct z_erofs_vle_unzip_io_sb), + iosb = kvzalloc(sizeof(struct z_erofs_vle_unzip_io_sb), GFP_KERNEL | __GFP_NOFAIL); - BUG_ON(iosb == NULL); - - io = &iosb->io; - } + DBG_BUGON(!iosb); + /* initialize fields in the allocated descriptor */ + io = &iosb->io; iosb->sb = sb; INIT_WORK(&io->u.work, z_erofs_vle_unzip_wq); out: @@ -1046,48 +1252,105 @@ out: return io; } +/* define workgroup jobqueue types */ +enum { +#ifdef EROFS_FS_HAS_MANAGED_CACHE + JQ_BYPASS, +#endif + JQ_SUBMIT, + NR_JOBQUEUES, +}; + +static void *jobqueueset_init(struct super_block *sb, + z_erofs_vle_owned_workgrp_t qtail[], + struct z_erofs_vle_unzip_io *q[], + struct z_erofs_vle_unzip_io *fgq, + bool forcefg) +{ +#ifdef EROFS_FS_HAS_MANAGED_CACHE + /* + * if managed cache is enabled, bypass jobqueue is needed, + * no need to read from device for all workgroups in this queue. + */ + q[JQ_BYPASS] = jobqueue_init(sb, fgq + JQ_BYPASS, true); + qtail[JQ_BYPASS] = &q[JQ_BYPASS]->head; +#endif + + q[JQ_SUBMIT] = jobqueue_init(sb, fgq + JQ_SUBMIT, forcefg); + qtail[JQ_SUBMIT] = &q[JQ_SUBMIT]->head; + + return tagptr_cast_ptr(tagptr_fold(tagptr1_t, q[JQ_SUBMIT], !forcefg)); +} + #ifdef EROFS_FS_HAS_MANAGED_CACHE -/* true - unlocked (noio), false - locked (need submit io) */ -static inline bool recover_managed_page(struct z_erofs_vle_workgroup *grp, - struct page *page) +static void move_to_bypass_jobqueue(struct z_erofs_vle_workgroup *grp, + z_erofs_vle_owned_workgrp_t qtail[], + z_erofs_vle_owned_workgrp_t owned_head) { - wait_on_page_locked(page); - if (PagePrivate(page) && PageUptodate(page)) - return true; + z_erofs_vle_owned_workgrp_t *const submit_qtail = qtail[JQ_SUBMIT]; + z_erofs_vle_owned_workgrp_t *const bypass_qtail = qtail[JQ_BYPASS]; - lock_page(page); - if (unlikely(!PagePrivate(page))) { - set_page_private(page, (unsigned long)grp); - SetPagePrivate(page); - } - if (unlikely(PageUptodate(page))) { - unlock_page(page); - return true; - } - return false; + DBG_BUGON(owned_head == Z_EROFS_VLE_WORKGRP_TAIL_CLOSED); + if (owned_head == Z_EROFS_VLE_WORKGRP_TAIL) + owned_head = Z_EROFS_VLE_WORKGRP_TAIL_CLOSED; + + WRITE_ONCE(grp->next, Z_EROFS_VLE_WORKGRP_TAIL_CLOSED); + + WRITE_ONCE(*submit_qtail, owned_head); + WRITE_ONCE(*bypass_qtail, &grp->next); + + qtail[JQ_BYPASS] = &grp->next; } -#define __FSIO_1 1 +static bool postsubmit_is_all_bypassed(struct z_erofs_vle_unzip_io *q[], + unsigned int nr_bios, + bool force_fg) +{ + /* + * although background is preferred, no one is pending for submission. + * don't issue workqueue for decompression but drop it directly instead. + */ + if (force_fg || nr_bios) + return false; + + kvfree(container_of(q[JQ_SUBMIT], + struct z_erofs_vle_unzip_io_sb, + io)); + return true; +} #else -#define __FSIO_1 0 +static void move_to_bypass_jobqueue(struct z_erofs_vle_workgroup *grp, + z_erofs_vle_owned_workgrp_t qtail[], + z_erofs_vle_owned_workgrp_t owned_head) +{ + /* impossible to bypass submission for managed cache disabled */ + DBG_BUGON(1); +} + +static bool postsubmit_is_all_bypassed(struct z_erofs_vle_unzip_io *q[], + unsigned int nr_bios, + bool force_fg) +{ + /* bios should be >0 if managed cache is disabled */ + DBG_BUGON(!nr_bios); + return false; +} #endif static bool z_erofs_vle_submit_all(struct super_block *sb, z_erofs_vle_owned_workgrp_t owned_head, struct list_head *pagepool, - struct z_erofs_vle_unzip_io *fg_io, + struct z_erofs_vle_unzip_io *fgq, bool force_fg) { struct erofs_sb_info *const sbi = EROFS_SB(sb); const unsigned int clusterpages = erofs_clusterpages(sbi); const gfp_t gfp = GFP_NOFS; -#ifdef EROFS_FS_HAS_MANAGED_CACHE - struct address_space *const mngda = sbi->managed_cache->i_mapping; - struct z_erofs_vle_workgroup *lstgrp_noio = NULL, *lstgrp_io = NULL; -#endif - struct z_erofs_vle_unzip_io *ios[1 + __FSIO_1]; + + z_erofs_vle_owned_workgrp_t qtail[NR_JOBQUEUES]; + struct z_erofs_vle_unzip_io *q[NR_JOBQUEUES]; struct bio *bio; - tagptr1_t bi_private; + void *bi_private; /* since bio will be NULL, no need to initialize last_index */ pgoff_t uninitialized_var(last_index); bool force_submit = false; @@ -1096,105 +1359,55 @@ static bool z_erofs_vle_submit_all(struct super_block *sb, if (unlikely(owned_head == Z_EROFS_VLE_WORKGRP_TAIL)) return false; - /* - * force_fg == 1, (io, fg_io[0]) no io, (io, fg_io[1]) need submit io - * force_fg == 0, (io, fg_io[0]) no io; (io[1], bg_io) need submit io - */ -#ifdef EROFS_FS_HAS_MANAGED_CACHE - ios[0] = prepare_io_handler(sb, fg_io + 0, false); -#endif - - if (force_fg) { - ios[__FSIO_1] = prepare_io_handler(sb, fg_io + __FSIO_1, false); - bi_private = tagptr_fold(tagptr1_t, ios[__FSIO_1], 0); - } else { - ios[__FSIO_1] = prepare_io_handler(sb, NULL, true); - bi_private = tagptr_fold(tagptr1_t, ios[__FSIO_1], 1); - } - - nr_bios = 0; force_submit = false; bio = NULL; + nr_bios = 0; + bi_private = jobqueueset_init(sb, qtail, q, fgq, force_fg); /* by default, all need io submission */ - ios[__FSIO_1]->head = owned_head; + q[JQ_SUBMIT]->head = owned_head; do { struct z_erofs_vle_workgroup *grp; - struct page **compressed_pages, *oldpage, *page; pgoff_t first_index; - unsigned int i = 0; -#ifdef EROFS_FS_HAS_MANAGED_CACHE - unsigned int noio = 0; - bool cachemngd; -#endif + struct page *page; + unsigned int i = 0, bypass = 0; int err; /* no possible 'owned_head' equals the following */ DBG_BUGON(owned_head == Z_EROFS_VLE_WORKGRP_TAIL_CLOSED); DBG_BUGON(owned_head == Z_EROFS_VLE_WORKGRP_NIL); - grp = owned_head; + grp = container_of(owned_head, + struct z_erofs_vle_workgroup, next); /* close the main owned chain at first */ owned_head = cmpxchg(&grp->next, Z_EROFS_VLE_WORKGRP_TAIL, - Z_EROFS_VLE_WORKGRP_TAIL_CLOSED); + Z_EROFS_VLE_WORKGRP_TAIL_CLOSED); first_index = grp->obj.index; - compressed_pages = grp->compressed_pages; - force_submit |= (first_index != last_index + 1); -repeat: - /* fulfill all compressed pages */ - oldpage = page = READ_ONCE(compressed_pages[i]); -#ifdef EROFS_FS_HAS_MANAGED_CACHE - cachemngd = false; - - if (page == EROFS_UNALLOCATED_CACHED_PAGE) { - cachemngd = true; - goto do_allocpage; - } else if (page != NULL) { - if (page->mapping != mngda) - BUG_ON(PageUptodate(page)); - else if (recover_managed_page(grp, page)) { - /* page is uptodate, skip io submission */ - force_submit = true; - ++noio; - goto skippage; - } - } else { -do_allocpage: -#else - if (page != NULL) - BUG_ON(PageUptodate(page)); - else { -#endif - page = __stagingpage_alloc(pagepool, gfp); - - if (oldpage != cmpxchg(compressed_pages + i, - oldpage, page)) { - list_add(&page->lru, pagepool); - goto repeat; -#ifdef EROFS_FS_HAS_MANAGED_CACHE - } else if (cachemngd && !add_to_page_cache_lru(page, - mngda, first_index + i, gfp)) { - set_page_private(page, (unsigned long)grp); - SetPagePrivate(page); -#endif - } +repeat: + page = pickup_page_for_submission(grp, i, pagepool, + MNGD_MAPPING(sbi), gfp); + if (!page) { + force_submit = true; + ++bypass; + goto skippage; } - if (bio != NULL && force_submit) { + if (bio && force_submit) { submit_bio_retry: __submit_bio(bio, REQ_OP_READ, 0); bio = NULL; } - if (bio == NULL) { + if (!bio) { bio = erofs_grab_bio(sb, first_index + i, - BIO_MAX_PAGES, z_erofs_vle_read_endio, true); - bio->bi_private = tagptr_cast_ptr(bi_private); + BIO_MAX_PAGES, + z_erofs_vle_read_endio, true); + bio->bi_private = bi_private; ++nr_bios; } @@ -1205,53 +1418,23 @@ submit_bio_retry: force_submit = false; last_index = first_index + i; -#ifdef EROFS_FS_HAS_MANAGED_CACHE skippage: -#endif if (++i < clusterpages) goto repeat; -#ifdef EROFS_FS_HAS_MANAGED_CACHE - if (noio < clusterpages) { - lstgrp_io = grp; - } else { - z_erofs_vle_owned_workgrp_t iogrp_next = - owned_head == Z_EROFS_VLE_WORKGRP_TAIL ? - Z_EROFS_VLE_WORKGRP_TAIL_CLOSED : - owned_head; - - if (lstgrp_io == NULL) - ios[1]->head = iogrp_next; - else - WRITE_ONCE(lstgrp_io->next, iogrp_next); - - if (lstgrp_noio == NULL) - ios[0]->head = grp; - else - WRITE_ONCE(lstgrp_noio->next, grp); - - lstgrp_noio = grp; - } -#endif + if (bypass < clusterpages) + qtail[JQ_SUBMIT] = &grp->next; + else + move_to_bypass_jobqueue(grp, qtail, owned_head); } while (owned_head != Z_EROFS_VLE_WORKGRP_TAIL); - if (bio != NULL) + if (bio) __submit_bio(bio, REQ_OP_READ, 0); -#ifndef EROFS_FS_HAS_MANAGED_CACHE - BUG_ON(!nr_bios); -#else - if (lstgrp_noio != NULL) - WRITE_ONCE(lstgrp_noio->next, Z_EROFS_VLE_WORKGRP_TAIL_CLOSED); - - if (!force_fg && !nr_bios) { - kvfree(container_of(ios[1], - struct z_erofs_vle_unzip_io_sb, io)); + if (postsubmit_is_all_bypassed(q, nr_bios, force_fg)) return true; - } -#endif - z_erofs_vle_unzip_kickoff(tagptr_cast_ptr(bi_private), nr_bios); + z_erofs_vle_unzip_kickoff(bi_private, nr_bios); return true; } @@ -1260,23 +1443,23 @@ static void z_erofs_submit_and_unzip(struct z_erofs_vle_frontend *f, bool force_fg) { struct super_block *sb = f->inode->i_sb; - struct z_erofs_vle_unzip_io io[1 + __FSIO_1]; + struct z_erofs_vle_unzip_io io[NR_JOBQUEUES]; if (!z_erofs_vle_submit_all(sb, f->owned_head, pagepool, io, force_fg)) return; #ifdef EROFS_FS_HAS_MANAGED_CACHE - z_erofs_vle_unzip_all(sb, &io[0], pagepool); + z_erofs_vle_unzip_all(sb, &io[JQ_BYPASS], pagepool); #endif if (!force_fg) return; /* wait until all bios are completed */ - wait_event(io[__FSIO_1].u.wait, - !atomic_read(&io[__FSIO_1].pending_bios)); + wait_event(io[JQ_SUBMIT].u.wait, + !atomic_read(&io[JQ_SUBMIT].pending_bios)); /* let's synchronous decompression */ - z_erofs_vle_unzip_all(sb, &io[__FSIO_1], pagepool); + z_erofs_vle_unzip_all(sb, &io[JQ_SUBMIT], pagepool); } static int z_erofs_vle_normalaccess_readpage(struct file *file, @@ -1287,9 +1470,10 @@ static int z_erofs_vle_normalaccess_readpage(struct file *file, int err; LIST_HEAD(pagepool); -#if (EROFS_FS_ZIP_CACHE_LVL >= 2) - f.cachedzone_la = (erofs_off_t)page->index << PAGE_SHIFT; -#endif + trace_erofs_readpage(page, false); + + f.headoffset = (erofs_off_t)page->index << PAGE_SHIFT; + err = z_erofs_do_read_page(&f, page, &pagepool); (void)z_erofs_vle_work_iter_end(&f.builder); @@ -1300,7 +1484,7 @@ static int z_erofs_vle_normalaccess_readpage(struct file *file, z_erofs_submit_and_unzip(&f, &pagepool, true); out: - if (f.m_iter.mpage != NULL) + if (f.m_iter.mpage) put_page(f.m_iter.mpage); /* clean up the remaining free pages */ @@ -1315,8 +1499,8 @@ static int z_erofs_vle_normalaccess_readpages(struct file *filp, { struct inode *const inode = mapping->host; struct erofs_sb_info *const sbi = EROFS_I_SB(inode); - const bool sync = __should_decompress_synchronously(sbi, nr_pages); + bool sync = __should_decompress_synchronously(sbi, nr_pages); struct z_erofs_vle_frontend f = VLE_FRONTEND_INIT(inode); gfp_t gfp = mapping_gfp_constraint(mapping, GFP_KERNEL); struct page *head = NULL; @@ -1325,26 +1509,31 @@ static int z_erofs_vle_normalaccess_readpages(struct file *filp, trace_erofs_readpages(mapping->host, lru_to_page(pages), nr_pages, false); -#if (EROFS_FS_ZIP_CACHE_LVL >= 2) - f.cachedzone_la = (erofs_off_t)lru_to_page(pages)->index << PAGE_SHIFT; -#endif + f.headoffset = (erofs_off_t)lru_to_page(pages)->index << PAGE_SHIFT; + for (; nr_pages; --nr_pages) { struct page *page = lru_to_page(pages); prefetchw(&page->flags); list_del(&page->lru); + /* + * A pure asynchronous readahead is indicated if + * a PG_readahead marked page is hitted at first. + * Let's also do asynchronous decompression for this case. + */ + sync &= !(PageReadahead(page) && !head); + if (add_to_page_cache_lru(page, mapping, page->index, gfp)) { list_add(&page->lru, &pagepool); continue; } - BUG_ON(PagePrivate(page)); set_page_private(page, (unsigned long)head); head = page; } - while (head != NULL) { + while (head) { struct page *page = head; int err; @@ -1366,7 +1555,7 @@ static int z_erofs_vle_normalaccess_readpages(struct file *filp, z_erofs_submit_and_unzip(&f, &pagepool, sync); - if (f.m_iter.mpage != NULL) + if (f.m_iter.mpage) put_page(f.m_iter.mpage); /* clean up the remaining free pages */ @@ -1561,7 +1750,7 @@ int z_erofs_map_blocks_iter(struct inode *inode, mblk = vle_extent_blkaddr(inode, lcn); if (!mpage || mpage->index != mblk) { - if (mpage != NULL) + if (mpage) put_page(mpage); mpage = erofs_get_meta_page(ctx.sb, mblk, false); diff --git a/drivers/staging/erofs/unzip_vle.h b/drivers/staging/erofs/unzip_vle.h @@ -67,13 +67,13 @@ struct z_erofs_vle_work { #define Z_EROFS_VLE_WORKGRP_FMT_LZ4 1 #define Z_EROFS_VLE_WORKGRP_FMT_MASK 1 -typedef struct z_erofs_vle_workgroup *z_erofs_vle_owned_workgrp_t; +typedef void *z_erofs_vle_owned_workgrp_t; struct z_erofs_vle_workgroup { struct erofs_workgroup obj; struct z_erofs_vle_work work; - /* next owned workgroup */ + /* point to next owned_workgrp_t */ z_erofs_vle_owned_workgrp_t next; /* compressed pages (including multi-usage pages) */ diff --git a/drivers/staging/erofs/unzip_vle_lz4.c b/drivers/staging/erofs/unzip_vle_lz4.c @@ -11,6 +11,28 @@ * distribution for more details. */ #include "unzip_vle.h" +#include <linux/lz4.h> + +int z_erofs_unzip_lz4(void *in, void *out, size_t inlen, size_t outlen) +{ + int ret = LZ4_decompress_safe_partial(in, out, inlen, outlen, outlen); + + if (ret >= 0) + return ret; + + /* + * LZ4_decompress_safe_partial will return an error code + * (< 0) if decompression failed + */ + errln("%s, failed to decompress, in[%p, %zu] outlen[%p, %zu]", + __func__, in, inlen, out, outlen); + WARN_ON(1); + print_hex_dump(KERN_DEBUG, "raw data [in]: ", DUMP_PREFIX_OFFSET, + 16, 1, in, inlen, true); + print_hex_dump(KERN_DEBUG, "raw data [out]: ", DUMP_PREFIX_OFFSET, + 16, 1, out, outlen, true); + return -EIO; +} #if Z_EROFS_CLUSTER_MAX_PAGES > Z_EROFS_VLE_INLINE_PAGEVECS #define EROFS_PERCPU_NR_PAGES Z_EROFS_CLUSTER_MAX_PAGES @@ -57,7 +79,7 @@ int z_erofs_vle_plain_copy(struct page **compressed_pages, if (compressed_pages[j] != page) continue; - BUG_ON(mirrored[j]); + DBG_BUGON(mirrored[j]); memcpy(percpu_data + j * PAGE_SIZE, dst, PAGE_SIZE); mirrored[j] = true; break; @@ -99,8 +121,6 @@ int z_erofs_vle_plain_copy(struct page **compressed_pages, return 0; } -extern int z_erofs_unzip_lz4(void *in, void *out, size_t inlen, size_t outlen); - int z_erofs_vle_unzip_fast_percpu(struct page **compressed_pages, unsigned int clusterpages, struct page **pages, @@ -206,3 +226,4 @@ int z_erofs_vle_unzip_vmap(struct page **compressed_pages, } return ret; } + diff --git a/drivers/staging/erofs/utils.c b/drivers/staging/erofs/utils.c @@ -23,9 +23,6 @@ struct page *erofs_allocpage(struct list_head *pool, gfp_t gfp) list_del(&page->lru); } else { page = alloc_pages(gfp | __GFP_NOFAIL, 0); - - BUG_ON(page == NULL); - BUG_ON(page->mapping != NULL); } return page; } @@ -58,7 +55,7 @@ repeat: /* decrease refcount added by erofs_workgroup_put */ if (unlikely(oldcount == 1)) atomic_long_dec(&erofs_global_shrink_cnt); - BUG_ON(index != grp->index); + DBG_BUGON(index != grp->index); } rcu_read_unlock(); return grp; @@ -71,8 +68,11 @@ int erofs_register_workgroup(struct super_block *sb, struct erofs_sb_info *sbi; int err; - /* grp->refcount should not < 1 */ - BUG_ON(!atomic_read(&grp->refcount)); + /* grp shouldn't be broken or used before */ + if (unlikely(atomic_read(&grp->refcount) != 1)) { + DBG_BUGON(1); + return -EINVAL; + } err = radix_tree_preload(GFP_NOFS); if (err) @@ -83,12 +83,21 @@ int erofs_register_workgroup(struct super_block *sb, grp = xa_tag_pointer(grp, tag); - err = radix_tree_insert(&sbi->workstn_tree, - grp->index, grp); + /* + * Bump up reference count before making this workgroup + * visible to other users in order to avoid potential UAF + * without serialized by erofs_workstn_lock. + */ + __erofs_workgroup_get(grp); - if (!err) { - __erofs_workgroup_get(grp); - } + err = radix_tree_insert(&sbi->workstn_tree, + grp->index, grp); + if (unlikely(err)) + /* + * it's safe to decrease since the workgroup isn't visible + * and refcount >= 2 (cannot be freezed). + */ + __erofs_workgroup_put(grp); erofs_workstn_unlock(sbi); radix_tree_preload_end(); @@ -97,19 +106,94 @@ int erofs_register_workgroup(struct super_block *sb, extern void erofs_workgroup_free_rcu(struct erofs_workgroup *grp); +static void __erofs_workgroup_free(struct erofs_workgroup *grp) +{ + atomic_long_dec(&erofs_global_shrink_cnt); + erofs_workgroup_free_rcu(grp); +} + int erofs_workgroup_put(struct erofs_workgroup *grp) { int count = atomic_dec_return(&grp->refcount); if (count == 1) atomic_long_inc(&erofs_global_shrink_cnt); - else if (!count) { - atomic_long_dec(&erofs_global_shrink_cnt); - erofs_workgroup_free_rcu(grp); - } + else if (!count) + __erofs_workgroup_free(grp); return count; } +#ifdef EROFS_FS_HAS_MANAGED_CACHE +/* for cache-managed case, customized reclaim paths exist */ +static void erofs_workgroup_unfreeze_final(struct erofs_workgroup *grp) +{ + erofs_workgroup_unfreeze(grp, 0); + __erofs_workgroup_free(grp); +} + +bool erofs_try_to_release_workgroup(struct erofs_sb_info *sbi, + struct erofs_workgroup *grp, + bool cleanup) +{ + /* + * for managed cache enabled, the refcount of workgroups + * themselves could be < 0 (freezed). So there is no guarantee + * that all refcount > 0 if managed cache is enabled. + */ + if (!erofs_workgroup_try_to_freeze(grp, 1)) + return false; + + /* + * note that all cached pages should be unlinked + * before delete it from the radix tree. + * Otherwise some cached pages of an orphan old workgroup + * could be still linked after the new one is available. + */ + if (erofs_try_to_free_all_cached_pages(sbi, grp)) { + erofs_workgroup_unfreeze(grp, 1); + return false; + } + + /* + * it is impossible to fail after the workgroup is freezed, + * however in order to avoid some race conditions, add a + * DBG_BUGON to observe this in advance. + */ + DBG_BUGON(xa_untag_pointer(radix_tree_delete(&sbi->workstn_tree, + grp->index)) != grp); + + /* + * if managed cache is enable, the last refcount + * should indicate the related workstation. + */ + erofs_workgroup_unfreeze_final(grp); + return true; +} + +#else +/* for nocache case, no customized reclaim path at all */ +bool erofs_try_to_release_workgroup(struct erofs_sb_info *sbi, + struct erofs_workgroup *grp, + bool cleanup) +{ + int cnt = atomic_read(&grp->refcount); + + DBG_BUGON(cnt <= 0); + DBG_BUGON(cleanup && cnt != 1); + + if (cnt > 1) + return false; + + DBG_BUGON(xa_untag_pointer(radix_tree_delete(&sbi->workstn_tree, + grp->index)) != grp); + + /* (rarely) could be grabbed again when freeing */ + erofs_workgroup_put(grp); + return true; +} + +#endif + unsigned long erofs_shrink_workstation(struct erofs_sb_info *sbi, unsigned long nr_shrink, bool cleanup) @@ -126,41 +210,13 @@ repeat: batch, first_index, PAGEVEC_SIZE); for (i = 0; i < found; ++i) { - int cnt; struct erofs_workgroup *grp = xa_untag_pointer(batch[i]); first_index = grp->index + 1; - cnt = atomic_read(&grp->refcount); - BUG_ON(cnt <= 0); - - if (cleanup) - BUG_ON(cnt != 1); - -#ifndef EROFS_FS_HAS_MANAGED_CACHE - else if (cnt > 1) -#else - if (!erofs_workgroup_try_to_freeze(grp, 1)) -#endif - continue; - - if (xa_untag_pointer(radix_tree_delete(&sbi->workstn_tree, - grp->index)) != grp) { -#ifdef EROFS_FS_HAS_MANAGED_CACHE -skip: - erofs_workgroup_unfreeze(grp, 1); -#endif + /* try to shrink each valid workgroup */ + if (!erofs_try_to_release_workgroup(sbi, grp, cleanup)) continue; - } - -#ifdef EROFS_FS_HAS_MANAGED_CACHE - if (erofs_try_to_free_all_cached_pages(sbi, grp)) - goto skip; - - erofs_workgroup_unfreeze(grp, 1); -#endif - /* (rarely) grabbed again when freeing */ - erofs_workgroup_put(grp); ++freed; if (unlikely(!--nr_shrink)) diff --git a/drivers/staging/fbtft/fbtft_device.c b/drivers/staging/fbtft/fbtft_device.c @@ -1455,7 +1455,7 @@ static int __init fbtft_device_init(void) } /* name=list lists all supported displays */ - if (strncmp(name, "list", FBTFT_GPIO_NAME_SIZE) == 0) { + if (strcmp(name, "list") == 0) { pr_info("Supported displays:\n"); for (i = 0; i < ARRAY_SIZE(displays); i++) diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c @@ -1458,7 +1458,7 @@ static int fwtty_proc_show(struct seq_file *m, void *v) return 0; } -static int fwtty_debugfs_stats_show(struct seq_file *m, void *v) +static int fwtty_stats_show(struct seq_file *m, void *v) { struct fw_serial *serial = m->private; struct fwtty_port *port; @@ -1476,8 +1476,9 @@ static int fwtty_debugfs_stats_show(struct seq_file *m, void *v) } return 0; } +DEFINE_SHOW_ATTRIBUTE(fwtty_stats); -static int fwtty_debugfs_peers_show(struct seq_file *m, void *v) +static int fwtty_peers_show(struct seq_file *m, void *v) { struct fw_serial *serial = m->private; struct fwtty_peer *peer; @@ -1491,32 +1492,7 @@ static int fwtty_debugfs_peers_show(struct seq_file *m, void *v) rcu_read_unlock(); return 0; } - -static int fwtty_stats_open(struct inode *inode, struct file *fp) -{ - return single_open(fp, fwtty_debugfs_stats_show, inode->i_private); -} - -static int fwtty_peers_open(struct inode *inode, struct file *fp) -{ - return single_open(fp, fwtty_debugfs_peers_show, inode->i_private); -} - -static const struct file_operations fwtty_stats_fops = { - .owner = THIS_MODULE, - .open = fwtty_stats_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static const struct file_operations fwtty_peers_fops = { - .owner = THIS_MODULE, - .open = fwtty_peers_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(fwtty_peers); static const struct tty_port_operations fwtty_port_ops = { .dtr_rts = fwtty_port_dtr_rts, diff --git a/drivers/staging/gasket/gasket_interrupt.c b/drivers/staging/gasket/gasket_interrupt.c @@ -184,7 +184,7 @@ gasket_interrupt_msix_init(struct gasket_interrupt_data *interrupt_data) interrupt_data->msix_entries = kcalloc(interrupt_data->num_interrupts, - sizeof(struct msix_entry), GFP_KERNEL); + sizeof(*interrupt_data->msix_entries), GFP_KERNEL); if (!interrupt_data->msix_entries) return -ENOMEM; @@ -322,8 +322,7 @@ int gasket_interrupt_init(struct gasket_dev *gasket_dev) const struct gasket_driver_desc *driver_desc = gasket_get_driver_desc(gasket_dev); - interrupt_data = kzalloc(sizeof(struct gasket_interrupt_data), - GFP_KERNEL); + interrupt_data = kzalloc(sizeof(*interrupt_data), GFP_KERNEL); if (!interrupt_data) return -ENOMEM; gasket_dev->interrupt_data = interrupt_data; @@ -336,17 +335,17 @@ int gasket_interrupt_init(struct gasket_dev *gasket_dev) interrupt_data->pack_width = driver_desc->interrupt_pack_width; interrupt_data->num_configured = 0; - interrupt_data->eventfd_ctxs = kcalloc(driver_desc->num_interrupts, - sizeof(struct eventfd_ctx *), - GFP_KERNEL); + interrupt_data->eventfd_ctxs = + kcalloc(driver_desc->num_interrupts, + sizeof(*interrupt_data->eventfd_ctxs), GFP_KERNEL); if (!interrupt_data->eventfd_ctxs) { kfree(interrupt_data); return -ENOMEM; } - interrupt_data->interrupt_counts = kcalloc(driver_desc->num_interrupts, - sizeof(ulong), - GFP_KERNEL); + interrupt_data->interrupt_counts = + kcalloc(driver_desc->num_interrupts, + sizeof(*interrupt_data->interrupt_counts), GFP_KERNEL); if (!interrupt_data->interrupt_counts) { kfree(interrupt_data->eventfd_ctxs); kfree(interrupt_data); diff --git a/drivers/staging/gasket/gasket_page_table.c b/drivers/staging/gasket/gasket_page_table.c @@ -1088,9 +1088,9 @@ void gasket_page_table_reset(struct gasket_page_table *pg_tbl) } /* See gasket_page_table.h for description. */ -int gasket_page_table_lookup_page( - struct gasket_page_table *pg_tbl, ulong dev_addr, struct page **ppage, - ulong *poffset) +int gasket_page_table_lookup_page(struct gasket_page_table *pg_tbl, + ulong dev_addr, struct page **ppage, + ulong *poffset) { uint page_num; struct gasket_page_table_entry *pte; @@ -1134,9 +1134,9 @@ fail: } /* See gasket_page_table.h for description. */ -bool gasket_page_table_are_addrs_bad( - struct gasket_page_table *pg_tbl, ulong host_addr, ulong dev_addr, - ulong bytes) +bool gasket_page_table_are_addrs_bad(struct gasket_page_table *pg_tbl, + ulong host_addr, ulong dev_addr, + ulong bytes) { if (host_addr & (PAGE_SIZE - 1)) { dev_err(pg_tbl->device, @@ -1150,8 +1150,8 @@ bool gasket_page_table_are_addrs_bad( EXPORT_SYMBOL(gasket_page_table_are_addrs_bad); /* See gasket_page_table.h for description. */ -bool gasket_page_table_is_dev_addr_bad( - struct gasket_page_table *pg_tbl, ulong dev_addr, ulong bytes) +bool gasket_page_table_is_dev_addr_bad(struct gasket_page_table *pg_tbl, + ulong dev_addr, ulong bytes) { uint num_pages = bytes / PAGE_SIZE; @@ -1226,9 +1226,8 @@ int gasket_page_table_system_status(struct gasket_page_table *page_table) } /* Record the host_addr to coherent dma memory mapping. */ -int gasket_set_user_virt( - struct gasket_dev *gasket_dev, u64 size, dma_addr_t dma_address, - ulong vma) +int gasket_set_user_virt(struct gasket_dev *gasket_dev, u64 size, + dma_addr_t dma_address, ulong vma) { int j; struct gasket_page_table *pg_tbl; @@ -1278,7 +1277,8 @@ int gasket_alloc_coherent_memory(struct gasket_dev *gasket_dev, u64 size, /* allocate the physical memory block */ gasket_dev->page_table[index]->coherent_pages = - kcalloc(num_pages, sizeof(struct gasket_coherent_page_entry), + kcalloc(num_pages, + sizeof(*gasket_dev->page_table[index]->coherent_pages), GFP_KERNEL); if (!gasket_dev->page_table[index]->coherent_pages) goto nomem; @@ -1345,8 +1345,7 @@ int gasket_free_coherent_memory(struct gasket_dev *gasket_dev, u64 size, } /* Release all coherent memory. */ -void gasket_free_coherent_memory_all( - struct gasket_dev *gasket_dev, u64 index) +void gasket_free_coherent_memory_all(struct gasket_dev *gasket_dev, u64 index) { if (!gasket_dev->page_table[index]) return; diff --git a/drivers/staging/goldfish/goldfish_audio.c b/drivers/staging/goldfish/goldfish_audio.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * drivers/misc/goldfish_audio.c * diff --git a/drivers/staging/greybus/arche-apb-ctrl.c b/drivers/staging/greybus/arche-apb-ctrl.c @@ -20,7 +20,6 @@ #include <linux/spinlock.h> #include "arche_platform.h" - static void apb_bootret_deassert(struct device *dev); struct arche_apb_ctrl_drvdata { diff --git a/drivers/staging/greybus/arche_platform.h b/drivers/staging/greybus/arche_platform.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0 +/* SPDX-License-Identifier: GPL-2.0 */ /* * Arche Platform driver to enable Unipro link. * diff --git a/drivers/staging/greybus/arpc.h b/drivers/staging/greybus/arpc.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) +/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ /* * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. diff --git a/drivers/staging/greybus/audio_apbridgea.h b/drivers/staging/greybus/audio_apbridgea.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: BSD-3-Clause +/* SPDX-License-Identifier: BSD-3-Clause */ /** * Copyright (c) 2015-2016 Google Inc. * All rights reserved. diff --git a/drivers/staging/greybus/audio_codec.h b/drivers/staging/greybus/audio_codec.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0 +/* SPDX-License-Identifier: GPL-2.0 */ /* * Greybus audio driver * Copyright 2015 Google Inc. diff --git a/drivers/staging/greybus/audio_manager.h b/drivers/staging/greybus/audio_manager.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0 +/* SPDX-License-Identifier: GPL-2.0 */ /* * Greybus operations * diff --git a/drivers/staging/greybus/audio_manager_module.c b/drivers/staging/greybus/audio_manager_module.c @@ -25,8 +25,8 @@ struct gb_audio_manager_module_attribute { const char *buf, size_t count); }; -static ssize_t gb_audio_module_attr_show( - struct kobject *kobj, struct attribute *attr, char *buf) +static ssize_t gb_audio_module_attr_show(struct kobject *kobj, + struct attribute *attr, char *buf) { struct gb_audio_manager_module_attribute *attribute; struct gb_audio_manager_module *module; diff --git a/drivers/staging/greybus/audio_manager_private.h b/drivers/staging/greybus/audio_manager_private.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0 +/* SPDX-License-Identifier: GPL-2.0 */ /* * Greybus operations * diff --git a/drivers/staging/greybus/audio_manager_sysfs.c b/drivers/staging/greybus/audio_manager_sysfs.c @@ -11,9 +11,9 @@ #include "audio_manager.h" #include "audio_manager_private.h" -static ssize_t manager_sysfs_add_store( - struct kobject *kobj, struct kobj_attribute *attr, - const char *buf, size_t count) +static ssize_t manager_sysfs_add_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t count) { struct gb_audio_manager_module_descriptor desc = { {0} }; @@ -36,9 +36,9 @@ static ssize_t manager_sysfs_add_store( static struct kobj_attribute manager_add_attribute = __ATTR(add, 0664, NULL, manager_sysfs_add_store); -static ssize_t manager_sysfs_remove_store( - struct kobject *kobj, struct kobj_attribute *attr, - const char *buf, size_t count) +static ssize_t manager_sysfs_remove_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t count) { int id; @@ -57,9 +57,9 @@ static ssize_t manager_sysfs_remove_store( static struct kobj_attribute manager_remove_attribute = __ATTR(remove, 0664, NULL, manager_sysfs_remove_store); -static ssize_t manager_sysfs_dump_store( - struct kobject *kobj, struct kobj_attribute *attr, - const char *buf, size_t count) +static ssize_t manager_sysfs_dump_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t count) { int id; @@ -81,8 +81,8 @@ static ssize_t manager_sysfs_dump_store( static struct kobj_attribute manager_dump_attribute = __ATTR(dump, 0664, NULL, manager_sysfs_dump_store); -static void manager_sysfs_init_attribute( - struct kobject *kobj, struct kobj_attribute *kattr) +static void manager_sysfs_init_attribute(struct kobject *kobj, + struct kobj_attribute *kattr) { int err; diff --git a/drivers/staging/greybus/audio_module.c b/drivers/staging/greybus/audio_module.c @@ -18,7 +18,7 @@ */ static int gbaudio_request_jack(struct gbaudio_module_info *module, - struct gb_audio_jack_event_request *req) + struct gb_audio_jack_event_request *req) { int report; struct snd_jack *jack = module->headset_jack.jack; @@ -26,8 +26,8 @@ static int gbaudio_request_jack(struct gbaudio_module_info *module, if (!jack) { dev_err_ratelimited(module->dev, - "Invalid jack event received:type: %u, event: %u\n", - req->jack_attribute, req->event); + "Invalid jack event received:type: %u, event: %u\n", + req->jack_attribute, req->event); return -EINVAL; } @@ -50,8 +50,8 @@ static int gbaudio_request_jack(struct gbaudio_module_info *module, report = req->jack_attribute & module->jack_mask; if (!report) { dev_err_ratelimited(module->dev, - "Invalid jack event received:type: %u, event: %u\n", - req->jack_attribute, req->event); + "Invalid jack event received:type: %u, event: %u\n", + req->jack_attribute, req->event); return -EINVAL; } @@ -74,8 +74,8 @@ static int gbaudio_request_button(struct gbaudio_module_info *module, if (!btn_jack) { dev_err_ratelimited(module->dev, - "Invalid button event received:type: %u, event: %u\n", - req->button_id, req->event); + "Invalid button event received:type: %u, event: %u\n", + req->button_id, req->event); return -EINVAL; } @@ -210,8 +210,8 @@ static int gb_audio_add_data_connection(struct gbaudio_module_info *gbmodule, return -ENOMEM; connection = gb_connection_create_offloaded(bundle, - le16_to_cpu(cport_desc->id), - GB_CONNECTION_FLAG_CSD); + le16_to_cpu(cport_desc->id), + GB_CONNECTION_FLAG_CSD); if (IS_ERR(connection)) { devm_kfree(gbmodule->dev, dai); return PTR_ERR(connection); @@ -317,7 +317,7 @@ static int gb_audio_probe(struct gb_bundle *bundle, ret = gbaudio_tplg_parse_data(gbmodule, topology); if (ret) { dev_err(dev, "%d:Error while parsing topology data\n", - ret); + ret); goto free_topology; } gbmodule->topology = topology; diff --git a/drivers/staging/greybus/audio_topology.c b/drivers/staging/greybus/audio_topology.c @@ -158,7 +158,7 @@ static const char **gb_generate_enum_strings(struct gbaudio_module_info *gb, } static int gbcodec_mixer_ctl_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) + struct snd_ctl_elem_info *uinfo) { unsigned int max; const char *name; @@ -209,7 +209,7 @@ static int gbcodec_mixer_ctl_info(struct snd_kcontrol *kcontrol, } static int gbcodec_mixer_ctl_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) + struct snd_ctl_elem_value *ucontrol) { int ret; struct gb_audio_ctl_elem_info *info; @@ -271,7 +271,7 @@ static int gbcodec_mixer_ctl_get(struct snd_kcontrol *kcontrol, } static int gbcodec_mixer_ctl_put(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) + struct snd_ctl_elem_value *ucontrol) { int ret = 0; struct gb_audio_ctl_elem_info *info; @@ -347,7 +347,7 @@ static int gbcodec_mixer_ctl_put(struct snd_kcontrol *kcontrol, * of DAPM related sequencing, etc. */ static int gbcodec_mixer_dapm_ctl_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) + struct snd_ctl_elem_info *uinfo) { int platform_max, platform_min; struct gbaudio_ctl_pvt *data; @@ -378,7 +378,7 @@ static int gbcodec_mixer_dapm_ctl_info(struct snd_kcontrol *kcontrol, } static int gbcodec_mixer_dapm_ctl_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) + struct snd_ctl_elem_value *ucontrol) { int ret; struct gb_audio_ctl_elem_info *info; @@ -427,7 +427,7 @@ static int gbcodec_mixer_dapm_ctl_get(struct snd_kcontrol *kcontrol, } static int gbcodec_mixer_dapm_ctl_put(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) + struct snd_ctl_elem_value *ucontrol) { int ret, wi, max, connect; unsigned int mask, val; @@ -501,7 +501,7 @@ static int gbcodec_mixer_dapm_ctl_put(struct snd_kcontrol *kcontrol, .private_value = (unsigned long)data} static int gbcodec_event_spk(struct snd_soc_dapm_widget *w, - struct snd_kcontrol *k, int event) + struct snd_kcontrol *k, int event) { /* Ensure GB speaker is connected */ @@ -509,7 +509,7 @@ static int gbcodec_event_spk(struct snd_soc_dapm_widget *w, } static int gbcodec_event_hp(struct snd_soc_dapm_widget *w, - struct snd_kcontrol *k, int event) + struct snd_kcontrol *k, int event) { /* Ensure GB module supports jack slot */ @@ -517,7 +517,7 @@ static int gbcodec_event_hp(struct snd_soc_dapm_widget *w, } static int gbcodec_event_int_mic(struct snd_soc_dapm_widget *w, - struct snd_kcontrol *k, int event) + struct snd_kcontrol *k, int event) { /* Ensure GB module supports jack slot */ @@ -664,7 +664,7 @@ static int gbaudio_tplg_create_enum_kctl(struct gbaudio_module_info *gb, /* debug enum info */ dev_dbg(gb->dev, "Max:%d, name_length:%d\n", gbe->max, - le16_to_cpu(gb_enum->names_length)); + le16_to_cpu(gb_enum->names_length)); for (i = 0; i < gbe->max; i++) dev_dbg(gb->dev, "src[%d]: %s\n", i, gbe->texts[i]); @@ -873,7 +873,7 @@ static int gbaudio_tplg_create_enum_ctl(struct gbaudio_module_info *gb, /* debug enum info */ dev_dbg(gb->dev, "Max:%d, name_length:%d\n", gbe->max, - le16_to_cpu(gb_enum->names_length)); + le16_to_cpu(gb_enum->names_length)); for (i = 0; i < gbe->max; i++) dev_dbg(gb->dev, "src[%d]: %s\n", i, gbe->texts[i]); @@ -884,8 +884,8 @@ static int gbaudio_tplg_create_enum_ctl(struct gbaudio_module_info *gb, } static int gbaudio_tplg_create_mixer_ctl(struct gbaudio_module_info *gb, - struct snd_kcontrol_new *kctl, - struct gb_audio_control *ctl) + struct snd_kcontrol_new *kctl, + struct gb_audio_control *ctl) { struct gbaudio_ctl_pvt *ctldata; @@ -905,8 +905,8 @@ static int gbaudio_tplg_create_mixer_ctl(struct gbaudio_module_info *gb, } static int gbaudio_tplg_create_wcontrol(struct gbaudio_module_info *gb, - struct snd_kcontrol_new *kctl, - struct gb_audio_control *ctl) + struct snd_kcontrol_new *kctl, + struct gb_audio_control *ctl) { int ret; @@ -1086,9 +1086,10 @@ static int gbaudio_tplg_create_widget(struct gbaudio_module_info *module, case snd_soc_dapm_switch: *dw = (struct snd_soc_dapm_widget) SND_SOC_DAPM_SWITCH_E(w->name, SND_SOC_NOPM, 0, 0, - widget_kctls, gbaudio_widget_event, - SND_SOC_DAPM_PRE_PMU | - SND_SOC_DAPM_POST_PMD); + widget_kctls, + gbaudio_widget_event, + SND_SOC_DAPM_PRE_PMU | + SND_SOC_DAPM_POST_PMD); break; case snd_soc_dapm_pga: *dw = (struct snd_soc_dapm_widget) @@ -1100,16 +1101,16 @@ static int gbaudio_tplg_create_widget(struct gbaudio_module_info *module, case snd_soc_dapm_mixer: *dw = (struct snd_soc_dapm_widget) SND_SOC_DAPM_MIXER_E(w->name, SND_SOC_NOPM, 0, 0, NULL, - 0, gbaudio_widget_event, - SND_SOC_DAPM_PRE_PMU | - SND_SOC_DAPM_POST_PMD); + 0, gbaudio_widget_event, + SND_SOC_DAPM_PRE_PMU | + SND_SOC_DAPM_POST_PMD); break; case snd_soc_dapm_mux: *dw = (struct snd_soc_dapm_widget) SND_SOC_DAPM_MUX_E(w->name, SND_SOC_NOPM, 0, 0, - widget_kctls, gbaudio_widget_event, - SND_SOC_DAPM_PRE_PMU | - SND_SOC_DAPM_POST_PMD); + widget_kctls, gbaudio_widget_event, + SND_SOC_DAPM_PRE_PMU | + SND_SOC_DAPM_POST_PMD); break; case snd_soc_dapm_aif_in: *dw = (struct snd_soc_dapm_widget) @@ -1145,7 +1146,7 @@ error: } static int gbaudio_tplg_process_kcontrols(struct gbaudio_module_info *module, - struct gb_audio_control *controls) + struct gb_audio_control *controls) { int i, csize, ret; struct snd_kcontrol_new *dapm_kctls; @@ -1215,7 +1216,7 @@ error: } static int gbaudio_tplg_process_widgets(struct gbaudio_module_info *module, - struct gb_audio_widget *widgets) + struct gb_audio_widget *widgets) { int i, ret, w_size; struct snd_soc_dapm_widget *dapm_widgets; @@ -1264,7 +1265,7 @@ error: } static int gbaudio_tplg_process_routes(struct gbaudio_module_info *module, - struct gb_audio_route *routes) + struct gb_audio_route *routes) { int i, ret; struct snd_soc_dapm_route *dapm_routes; @@ -1300,8 +1301,8 @@ static int gbaudio_tplg_process_routes(struct gbaudio_module_info *module, } dapm_routes->control = gbaudio_map_controlid(module, - curr->control_id, - curr->index); + curr->control_id, + curr->index); if ((curr->control_id != GBAUDIO_INVALID_ID) && !dapm_routes->control) { dev_err(module->dev, "%d:%d:%d:%d - Invalid control\n", @@ -1325,7 +1326,7 @@ error: } static int gbaudio_tplg_process_header(struct gbaudio_module_info *module, - struct gb_audio_topology *tplg_data) + struct gb_audio_topology *tplg_data) { /* fetch no. of kcontrols, widgets & routes */ module->num_controls = tplg_data->num_controls; @@ -1351,7 +1352,7 @@ static int gbaudio_tplg_process_header(struct gbaudio_module_info *module, } int gbaudio_tplg_parse_data(struct gbaudio_module_info *module, - struct gb_audio_topology *tplg_data) + struct gb_audio_topology *tplg_data) { int ret; struct gb_audio_control *controls; diff --git a/drivers/staging/greybus/bootrom.c b/drivers/staging/greybus/bootrom.c @@ -86,7 +86,8 @@ static void gb_bootrom_timedout(struct work_struct *work) } static void gb_bootrom_set_timeout(struct gb_bootrom *bootrom, - enum next_request_type next, unsigned long timeout) + enum next_request_type next, + unsigned long timeout) { bootrom->next_request = next; schedule_delayed_work(&bootrom->dwork, msecs_to_jiffies(timeout)); @@ -175,7 +176,7 @@ static int find_firmware(struct gb_bootrom *bootrom, u8 stage) firmware_name); rc = request_firmware(&bootrom->fw, firmware_name, - &connection->bundle->dev); + &connection->bundle->dev); if (rc) { dev_err(&connection->bundle->dev, "failed to find %s firmware (%d)\n", firmware_name, rc); @@ -274,7 +275,7 @@ static int gb_bootrom_get_firmware(struct gb_operation *op) if (offset >= fw->size || size > fw->size - offset) { dev_warn(dev, "bad firmware request (offs = %u, size = %u)\n", - offset, size); + offset, size); ret = -EINVAL; goto unlock; } @@ -387,15 +388,15 @@ static int gb_bootrom_get_version(struct gb_bootrom *bootrom) sizeof(response)); if (ret) { dev_err(&bundle->dev, - "failed to get protocol version: %d\n", - ret); + "failed to get protocol version: %d\n", + ret); return ret; } if (response.major > request.major) { dev_err(&bundle->dev, - "unsupported major protocol version (%u > %u)\n", - response.major, request.major); + "unsupported major protocol version (%u > %u)\n", + response.major, request.major); return -ENOTSUPP; } @@ -403,13 +404,13 @@ static int gb_bootrom_get_version(struct gb_bootrom *bootrom) bootrom->protocol_minor = response.minor; dev_dbg(&bundle->dev, "%s - %u.%u\n", __func__, response.major, - response.minor); + response.minor); return 0; } static int gb_bootrom_probe(struct gb_bundle *bundle, - const struct greybus_bundle_id *id) + const struct greybus_bundle_id *id) { struct greybus_descriptor_cport *cport_desc; struct gb_connection *connection; @@ -428,8 +429,8 @@ static int gb_bootrom_probe(struct gb_bundle *bundle, return -ENOMEM; connection = gb_connection_create(bundle, - le16_to_cpu(cport_desc->id), - gb_bootrom_request_handler); + le16_to_cpu(cport_desc->id), + gb_bootrom_request_handler); if (IS_ERR(connection)) { ret = PTR_ERR(connection); goto err_free_bootrom; @@ -466,7 +467,7 @@ static int gb_bootrom_probe(struct gb_bundle *bundle, NULL, 0); if (ret) { dev_err(&connection->bundle->dev, - "failed to send AP READY: %d\n", ret); + "failed to send AP READY: %d\n", ret); goto err_cancel_timeout; } diff --git a/drivers/staging/greybus/bundle.h b/drivers/staging/greybus/bundle.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0 +/* SPDX-License-Identifier: GPL-2.0 */ /* * Greybus bundles * diff --git a/drivers/staging/greybus/camera.c b/drivers/staging/greybus/camera.c @@ -841,8 +841,8 @@ done: } static int gb_camera_op_capture(void *priv, u32 request_id, - unsigned int streams, unsigned int num_frames, - size_t settings_size, const void *settings) + unsigned int streams, unsigned int num_frames, + size_t settings_size, const void *settings) { struct gb_camera *gcam = priv; @@ -869,7 +869,7 @@ static const struct gb_camera_ops gb_cam_ops = { */ static ssize_t gb_camera_debugfs_capabilities(struct gb_camera *gcam, - char *buf, size_t len) + char *buf, size_t len) { struct gb_camera_debugfs_buffer *buffer = &gcam->debugfs.buffers[GB_CAMERA_DEBUGFS_BUFFER_CAPABILITIES]; @@ -905,7 +905,7 @@ done: } static ssize_t gb_camera_debugfs_configure_streams(struct gb_camera *gcam, - char *buf, size_t len) + char *buf, size_t len) { struct gb_camera_debugfs_buffer *buffer = &gcam->debugfs.buffers[GB_CAMERA_DEBUGFS_BUFFER_STREAMS]; @@ -999,7 +999,7 @@ done: }; static ssize_t gb_camera_debugfs_capture(struct gb_camera *gcam, - char *buf, size_t len) + char *buf, size_t len) { unsigned int request_id; unsigned int streams_mask; @@ -1040,7 +1040,7 @@ static ssize_t gb_camera_debugfs_capture(struct gb_camera *gcam, } static ssize_t gb_camera_debugfs_flush(struct gb_camera *gcam, - char *buf, size_t len) + char *buf, size_t len) { struct gb_camera_debugfs_buffer *buffer = &gcam->debugfs.buffers[GB_CAMERA_DEBUGFS_BUFFER_FLUSH]; @@ -1190,7 +1190,6 @@ static int gb_camera_debugfs_init(struct gb_camera *gcam) debugfs_create_file(entry->name, entry->mask, gcam->debugfs.root, gcam, &gb_camera_debugfs_ops); - } } return 0; diff --git a/drivers/staging/greybus/connection.c b/drivers/staging/greybus/connection.c @@ -11,17 +11,13 @@ #include "greybus.h" #include "greybus_trace.h" - #define GB_CONNECTION_CPORT_QUIESCE_TIMEOUT 1000 - static void gb_connection_kref_release(struct kref *kref); - static DEFINE_SPINLOCK(gb_connections_lock); static DEFINE_MUTEX(gb_connection_mutex); - /* Caller holds gb_connection_mutex. */ static bool gb_connection_cport_in_use(struct gb_interface *intf, u16 cport_id) { @@ -30,7 +26,7 @@ static bool gb_connection_cport_in_use(struct gb_interface *intf, u16 cport_id) list_for_each_entry(connection, &hd->connections, hd_links) { if (connection->intf == intf && - connection->intf_cport_id == cport_id) + connection->intf_cport_id == cport_id) return true; } @@ -78,7 +74,7 @@ found: * received on the bundle. */ void greybus_data_rcvd(struct gb_host_device *hd, u16 cport_id, - u8 *data, size_t length) + u8 *data, size_t length) { struct gb_connection *connection; @@ -118,7 +114,7 @@ static void gb_connection_init_name(struct gb_connection *connection) } snprintf(connection->name, sizeof(connection->name), - "%u/%u:%u", hd_cport_id, intf_id, cport_id); + "%u/%u:%u", hd_cport_id, intf_id, cport_id); } /* @@ -146,10 +142,10 @@ static void gb_connection_init_name(struct gb_connection *connection) */ static struct gb_connection * _gb_connection_create(struct gb_host_device *hd, int hd_cport_id, - struct gb_interface *intf, - struct gb_bundle *bundle, int cport_id, - gb_request_handler_t handler, - unsigned long flags) + struct gb_interface *intf, + struct gb_bundle *bundle, int cport_id, + gb_request_handler_t handler, + unsigned long flags) { struct gb_connection *connection; int ret; @@ -230,35 +226,35 @@ err_unlock: struct gb_connection * gb_connection_create_static(struct gb_host_device *hd, u16 hd_cport_id, - gb_request_handler_t handler) + gb_request_handler_t handler) { return _gb_connection_create(hd, hd_cport_id, NULL, NULL, 0, handler, - GB_CONNECTION_FLAG_HIGH_PRIO); + GB_CONNECTION_FLAG_HIGH_PRIO); } struct gb_connection * gb_connection_create_control(struct gb_interface *intf) { return _gb_connection_create(intf->hd, -1, intf, NULL, 0, NULL, - GB_CONNECTION_FLAG_CONTROL | - GB_CONNECTION_FLAG_HIGH_PRIO); + GB_CONNECTION_FLAG_CONTROL | + GB_CONNECTION_FLAG_HIGH_PRIO); } struct gb_connection * gb_connection_create(struct gb_bundle *bundle, u16 cport_id, - gb_request_handler_t handler) + gb_request_handler_t handler) { struct gb_interface *intf = bundle->intf; return _gb_connection_create(intf->hd, -1, intf, bundle, cport_id, - handler, 0); + handler, 0); } EXPORT_SYMBOL_GPL(gb_connection_create); struct gb_connection * gb_connection_create_flags(struct gb_bundle *bundle, u16 cport_id, - gb_request_handler_t handler, - unsigned long flags) + gb_request_handler_t handler, + unsigned long flags) { struct gb_interface *intf = bundle->intf; @@ -266,13 +262,13 @@ gb_connection_create_flags(struct gb_bundle *bundle, u16 cport_id, flags &= ~GB_CONNECTION_FLAG_CORE_MASK; return _gb_connection_create(intf->hd, -1, intf, bundle, cport_id, - handler, flags); + handler, flags); } EXPORT_SYMBOL_GPL(gb_connection_create_flags); struct gb_connection * gb_connection_create_offloaded(struct gb_bundle *bundle, u16 cport_id, - unsigned long flags) + unsigned long flags) { flags |= GB_CONNECTION_FLAG_OFFLOADED; @@ -289,10 +285,10 @@ static int gb_connection_hd_cport_enable(struct gb_connection *connection) return 0; ret = hd->driver->cport_enable(hd, connection->hd_cport_id, - connection->flags); + connection->flags); if (ret) { dev_err(&hd->dev, "%s: failed to enable host cport: %d\n", - connection->name, ret); + connection->name, ret); return ret; } @@ -310,7 +306,7 @@ static void gb_connection_hd_cport_disable(struct gb_connection *connection) ret = hd->driver->cport_disable(hd, connection->hd_cport_id); if (ret) { dev_err(&hd->dev, "%s: failed to disable host cport: %d\n", - connection->name, ret); + connection->name, ret); } } @@ -325,7 +321,7 @@ static int gb_connection_hd_cport_connected(struct gb_connection *connection) ret = hd->driver->cport_connected(hd, connection->hd_cport_id); if (ret) { dev_err(&hd->dev, "%s: failed to set connected state: %d\n", - connection->name, ret); + connection->name, ret); return ret; } @@ -343,7 +339,7 @@ static int gb_connection_hd_cport_flush(struct gb_connection *connection) ret = hd->driver->cport_flush(hd, connection->hd_cport_id); if (ret) { dev_err(&hd->dev, "%s: failed to flush host cport: %d\n", - connection->name, ret); + connection->name, ret); return ret; } @@ -373,7 +369,7 @@ static int gb_connection_hd_cport_quiesce(struct gb_connection *connection) GB_CONNECTION_CPORT_QUIESCE_TIMEOUT); if (ret) { dev_err(&hd->dev, "%s: failed to quiesce host cport: %d\n", - connection->name, ret); + connection->name, ret); return ret; } @@ -391,7 +387,7 @@ static int gb_connection_hd_cport_clear(struct gb_connection *connection) ret = hd->driver->cport_clear(hd, connection->hd_cport_id); if (ret) { dev_err(&hd->dev, "%s: failed to clear host cport: %d\n", - connection->name, ret); + connection->name, ret); return ret; } @@ -427,11 +423,11 @@ gb_connection_svc_connection_create(struct gb_connection *connection) } ret = gb_svc_connection_create(hd->svc, - hd->svc->ap_intf_id, - connection->hd_cport_id, - intf->interface_id, - connection->intf_cport_id, - cport_flags); + hd->svc->ap_intf_id, + connection->hd_cport_id, + intf->interface_id, + connection->intf_cport_id, + cport_flags); if (ret) { dev_err(&connection->hd->dev, "%s: failed to create svc connection: %d\n", @@ -495,8 +491,8 @@ gb_connection_control_disconnecting(struct gb_connection *connection) ret = gb_control_disconnecting_operation(control, cport_id); if (ret) { dev_err(&connection->hd->dev, - "%s: failed to send disconnecting: %d\n", - connection->name, ret); + "%s: failed to send disconnecting: %d\n", + connection->name, ret); } } @@ -535,16 +531,16 @@ gb_connection_control_disconnected(struct gb_connection *connection) } static int gb_connection_shutdown_operation(struct gb_connection *connection, - u8 phase) + u8 phase) { struct gb_cport_shutdown_request *req; struct gb_operation *operation; int ret; operation = gb_operation_create_core(connection, - GB_REQUEST_TYPE_CPORT_SHUTDOWN, - sizeof(*req), 0, 0, - GFP_KERNEL); + GB_REQUEST_TYPE_CPORT_SHUTDOWN, + sizeof(*req), 0, 0, + GFP_KERNEL); if (!operation) return -ENOMEM; @@ -573,14 +569,14 @@ static int gb_connection_cport_shutdown(struct gb_connection *connection, return 0; ret = drv->cport_shutdown(hd, connection->hd_cport_id, phase, - GB_OPERATION_TIMEOUT_DEFAULT); + GB_OPERATION_TIMEOUT_DEFAULT); } else { ret = gb_connection_shutdown_operation(connection, phase); } if (ret) { dev_err(&hd->dev, "%s: failed to send cport shutdown (phase %d): %d\n", - connection->name, phase, ret); + connection->name, phase, ret); return ret; } @@ -606,14 +602,14 @@ gb_connection_cport_shutdown_phase_2(struct gb_connection *connection) * DISCONNECTING. */ static void gb_connection_cancel_operations(struct gb_connection *connection, - int errno) + int errno) __must_hold(&connection->lock) { struct gb_operation *operation; while (!list_empty(&connection->operations)) { operation = list_last_entry(&connection->operations, - struct gb_operation, links); + struct gb_operation, links); gb_operation_get(operation); spin_unlock_irq(&connection->lock); @@ -635,7 +631,7 @@ static void gb_connection_cancel_operations(struct gb_connection *connection, */ static void gb_connection_flush_incoming_operations(struct gb_connection *connection, - int errno) + int errno) __must_hold(&connection->lock) { struct gb_operation *operation; @@ -644,7 +640,7 @@ gb_connection_flush_incoming_operations(struct gb_connection *connection, while (!list_empty(&connection->operations)) { incoming = false; list_for_each_entry(operation, &connection->operations, - links) { + links) { if (gb_operation_is_incoming(operation)) { gb_operation_get(operation); incoming = true; diff --git a/drivers/staging/greybus/connection.h b/drivers/staging/greybus/connection.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0 +/* SPDX-License-Identifier: GPL-2.0 */ /* * Greybus connections * diff --git a/drivers/staging/greybus/control.c b/drivers/staging/greybus/control.c @@ -32,15 +32,15 @@ static int gb_control_get_version(struct gb_control *control) sizeof(response)); if (ret) { dev_err(&intf->dev, - "failed to get control-protocol version: %d\n", - ret); + "failed to get control-protocol version: %d\n", + ret); return ret; } if (response.major > request.major) { dev_err(&intf->dev, - "unsupported major control-protocol version (%u > %u)\n", - response.major, request.major); + "unsupported major control-protocol version (%u > %u)\n", + response.major, request.major); return -ENOTSUPP; } @@ -48,13 +48,13 @@ static int gb_control_get_version(struct gb_control *control) control->protocol_minor = response.minor; dev_dbg(&intf->dev, "%s - %u.%u\n", __func__, response.major, - response.minor); + response.minor); return 0; } static int gb_control_get_bundle_version(struct gb_control *control, - struct gb_bundle *bundle) + struct gb_bundle *bundle) { struct gb_interface *intf = control->connection->intf; struct gb_control_bundle_version_request request; @@ -69,8 +69,8 @@ static int gb_control_get_bundle_version(struct gb_control *control, &response, sizeof(response)); if (ret) { dev_err(&intf->dev, - "failed to get bundle %u class version: %d\n", - bundle->id, ret); + "failed to get bundle %u class version: %d\n", + bundle->id, ret); return ret; } @@ -78,7 +78,7 @@ static int gb_control_get_bundle_version(struct gb_control *control, bundle->class_minor = response.minor; dev_dbg(&intf->dev, "%s - %u: %u.%u\n", __func__, bundle->id, - response.major, response.minor); + response.major, response.minor); return 0; } @@ -112,7 +112,7 @@ int gb_control_get_manifest_size_operation(struct gb_interface *intf) NULL, 0, &response, sizeof(response)); if (ret) { dev_err(&connection->intf->dev, - "failed to get manifest size: %d\n", ret); + "failed to get manifest size: %d\n", ret); return ret; } @@ -149,16 +149,16 @@ int gb_control_disconnected_operation(struct gb_control *control, u16 cport_id) } int gb_control_disconnecting_operation(struct gb_control *control, - u16 cport_id) + u16 cport_id) { struct gb_control_disconnecting_request *request; struct gb_operation *operation; int ret; operation = gb_operation_create_core(control->connection, - GB_CONTROL_TYPE_DISCONNECTING, - sizeof(*request), 0, 0, - GFP_KERNEL); + GB_CONTROL_TYPE_DISCONNECTING, + sizeof(*request), 0, 0, + GFP_KERNEL); if (!operation) return -ENOMEM; @@ -168,7 +168,7 @@ int gb_control_disconnecting_operation(struct gb_control *control, ret = gb_operation_request_send_sync(operation); if (ret) { dev_err(&control->dev, "failed to send disconnecting: %d\n", - ret); + ret); } gb_operation_put(operation); @@ -182,9 +182,10 @@ int gb_control_mode_switch_operation(struct gb_control *control) int ret; operation = gb_operation_create_core(control->connection, - GB_CONTROL_TYPE_MODE_SWITCH, - 0, 0, GB_OPERATION_FLAG_UNIDIRECTIONAL, - GFP_KERNEL); + GB_CONTROL_TYPE_MODE_SWITCH, + 0, 0, + GB_OPERATION_FLAG_UNIDIRECTIONAL, + GFP_KERNEL); if (!operation) return -ENOMEM; @@ -400,7 +401,7 @@ int gb_control_interface_hibernate_abort(struct gb_control *control) } static ssize_t vendor_string_show(struct device *dev, - struct device_attribute *attr, char *buf) + struct device_attribute *attr, char *buf) { struct gb_control *control = to_gb_control(dev); @@ -409,7 +410,7 @@ static ssize_t vendor_string_show(struct device *dev, static DEVICE_ATTR_RO(vendor_string); static ssize_t product_string_show(struct device *dev, - struct device_attribute *attr, char *buf) + struct device_attribute *attr, char *buf) { struct gb_control *control = to_gb_control(dev); @@ -455,8 +456,8 @@ struct gb_control *gb_control_create(struct gb_interface *intf) connection = gb_connection_create_control(intf); if (IS_ERR(connection)) { dev_err(&intf->dev, - "failed to create control connection: %ld\n", - PTR_ERR(connection)); + "failed to create control connection: %ld\n", + PTR_ERR(connection)); kfree(control); return ERR_CAST(connection); } @@ -485,8 +486,8 @@ int gb_control_enable(struct gb_control *control) ret = gb_connection_enable_tx(control->connection); if (ret) { dev_err(&control->connection->intf->dev, - "failed to enable control connection: %d\n", - ret); + "failed to enable control connection: %d\n", + ret); return ret; } @@ -547,8 +548,8 @@ int gb_control_add(struct gb_control *control) ret = device_add(&control->dev); if (ret) { dev_err(&control->dev, - "failed to register control device: %d\n", - ret); + "failed to register control device: %d\n", + ret); return ret; } diff --git a/drivers/staging/greybus/control.h b/drivers/staging/greybus/control.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0 +/* SPDX-License-Identifier: GPL-2.0 */ /* * Greybus CPort control protocol * @@ -40,7 +40,7 @@ int gb_control_get_bundle_versions(struct gb_control *control); int gb_control_connected_operation(struct gb_control *control, u16 cport_id); int gb_control_disconnected_operation(struct gb_control *control, u16 cport_id); int gb_control_disconnecting_operation(struct gb_control *control, - u16 cport_id); + u16 cport_id); int gb_control_mode_switch_operation(struct gb_control *control); void gb_control_mode_switch_prepare(struct gb_control *control); void gb_control_mode_switch_complete(struct gb_control *control); diff --git a/drivers/staging/greybus/core.c b/drivers/staging/greybus/core.c @@ -28,7 +28,7 @@ int greybus_disabled(void) EXPORT_SYMBOL_GPL(greybus_disabled); static bool greybus_match_one_id(struct gb_bundle *bundle, - const struct greybus_bundle_id *id) + const struct greybus_bundle_id *id) { if ((id->match_flags & GREYBUS_ID_MATCH_VENDOR) && (id->vendor != bundle->intf->vendor_id)) @@ -48,7 +48,7 @@ static bool greybus_match_one_id(struct gb_bundle *bundle, static const struct greybus_bundle_id * greybus_match_id(struct gb_bundle *bundle, const struct greybus_bundle_id *id) { - if (id == NULL) + if (!id) return NULL; for (; id->vendor || id->product || id->class || id->driver_info; diff --git a/drivers/staging/greybus/es2.c b/drivers/staging/greybus/es2.c @@ -216,7 +216,7 @@ static int output_async(struct es2_ap_dev *es2, void *req, u16 size, u8 cmd) } static int output(struct gb_host_device *hd, void *req, u16 size, u8 cmd, - bool async) + bool async) { struct es2_ap_dev *es2 = hd_to_es2(hd); @@ -227,7 +227,7 @@ static int output(struct gb_host_device *hd, void *req, u16 size, u8 cmd, } static int es2_cport_in_enable(struct es2_ap_dev *es2, - struct es2_cport_in *cport_in) + struct es2_cport_in *cport_in) { struct urb *urb; int ret; @@ -239,7 +239,7 @@ static int es2_cport_in_enable(struct es2_ap_dev *es2, ret = usb_submit_urb(urb, GFP_KERNEL); if (ret) { dev_err(&es2->usb_dev->dev, - "failed to submit in-urb: %d\n", ret); + "failed to submit in-urb: %d\n", ret); goto err_kill_urbs; } } @@ -256,7 +256,7 @@ err_kill_urbs: } static void es2_cport_in_disable(struct es2_ap_dev *es2, - struct es2_cport_in *cport_in) + struct es2_cport_in *cport_in) { struct urb *urb; int i; @@ -316,8 +316,8 @@ static struct urb *next_free_urb(struct es2_ap_dev *es2, gfp_t gfp_mask) /* Look in our pool of allocated urbs first, as that's the "fastest" */ for (i = 0; i < NUM_CPORT_OUT_URB; ++i) { - if (es2->cport_out_urb_busy[i] == false && - es2->cport_out_urb_cancelled[i] == false) { + if (!es2->cport_out_urb_busy[i] && + !es2->cport_out_urb_cancelled[i]) { es2->cport_out_urb_busy[i] = true; urb = es2->cport_out_urb[i]; break; @@ -487,7 +487,7 @@ static void message_cancel(struct gb_message *message) } static int es2_cport_allocate(struct gb_host_device *hd, int cport_id, - unsigned long flags) + unsigned long flags) { struct es2_ap_dev *es2 = hd_to_es2(hd); struct ida *id_map = &hd->cport_id_map; @@ -501,7 +501,7 @@ static int es2_cport_allocate(struct gb_host_device *hd, int cport_id, } if (flags & GB_CONNECTION_FLAG_OFFLOADED && - flags & GB_CONNECTION_FLAG_CDSI1) { + flags & GB_CONNECTION_FLAG_CDSI1) { if (es2->cdsi1_in_use) { dev_err(&hd->dev, "CDSI1 already in use\n"); return -EBUSY; @@ -561,16 +561,16 @@ static int cport_enable(struct gb_host_device *hd, u16 cport_id, req->flags = cpu_to_le32(connection_flags); dev_dbg(&hd->dev, "%s - cport = %u, flags = %02x\n", __func__, - cport_id, connection_flags); + cport_id, connection_flags); ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), - GB_APB_REQUEST_CPORT_FLAGS, - USB_DIR_OUT | USB_TYPE_VENDOR | - USB_RECIP_INTERFACE, cport_id, 0, - req, sizeof(*req), ES2_USB_CTRL_TIMEOUT); + GB_APB_REQUEST_CPORT_FLAGS, + USB_DIR_OUT | USB_TYPE_VENDOR | + USB_RECIP_INTERFACE, cport_id, 0, + req, sizeof(*req), ES2_USB_CTRL_TIMEOUT); if (ret != sizeof(*req)) { dev_err(&udev->dev, "failed to set cport flags for port %d\n", - cport_id); + cport_id); if (ret >= 0) ret = -EIO; @@ -596,7 +596,7 @@ static int es2_cport_connected(struct gb_host_device *hd, u16 cport_id) NULL, ES2_ARPC_CPORT_TIMEOUT); if (ret) { dev_err(dev, "failed to set connected state for cport %u: %d\n", - cport_id, ret); + cport_id, ret); return ret; } @@ -622,7 +622,7 @@ static int es2_cport_flush(struct gb_host_device *hd, u16 cport_id) } static int es2_cport_shutdown(struct gb_host_device *hd, u16 cport_id, - u8 phase, unsigned int timeout) + u8 phase, unsigned int timeout) { struct es2_ap_dev *es2 = hd_to_es2(hd); struct device *dev = &es2->usb_dev->dev; @@ -640,7 +640,7 @@ static int es2_cport_shutdown(struct gb_host_device *hd, u16 cport_id, &result, ES2_ARPC_CPORT_TIMEOUT + timeout); if (ret) { dev_err(dev, "failed to send shutdown over cport %u: %d (%d)\n", - cport_id, ret, result); + cport_id, ret, result); return ret; } @@ -648,7 +648,7 @@ static int es2_cport_shutdown(struct gb_host_device *hd, u16 cport_id, } static int es2_cport_quiesce(struct gb_host_device *hd, u16 cport_id, - size_t peer_space, unsigned int timeout) + size_t peer_space, unsigned int timeout) { struct es2_ap_dev *es2 = hd_to_es2(hd); struct device *dev = &es2->usb_dev->dev; @@ -669,7 +669,7 @@ static int es2_cport_quiesce(struct gb_host_device *hd, u16 cport_id, &result, ES2_ARPC_CPORT_TIMEOUT + timeout); if (ret) { dev_err(dev, "failed to quiesce cport %u: %d (%d)\n", - cport_id, ret, result); + cport_id, ret, result); return ret; } @@ -846,7 +846,7 @@ static void cport_in_callback(struct urb *urb) if (cport_id_valid(hd, cport_id)) { greybus_data_rcvd(hd, cport_id, urb->transfer_buffer, - urb->actual_length); + urb->actual_length); } else { dev_err(dev, "invalid cport id %u received\n", cport_id); } @@ -1083,14 +1083,14 @@ static void apb_log_get(struct es2_ap_dev *es2, char *buf) do { retval = usb_control_msg(es2->usb_dev, - usb_rcvctrlpipe(es2->usb_dev, 0), - GB_APB_REQUEST_LOG, - USB_DIR_IN | USB_TYPE_VENDOR | - USB_RECIP_INTERFACE, - 0x00, 0x00, - buf, - APB1_LOG_MSG_SIZE, - ES2_USB_CTRL_TIMEOUT); + usb_rcvctrlpipe(es2->usb_dev, 0), + GB_APB_REQUEST_LOG, + USB_DIR_IN | USB_TYPE_VENDOR | + USB_RECIP_INTERFACE, + 0x00, 0x00, + buf, + APB1_LOG_MSG_SIZE, + ES2_USB_CTRL_TIMEOUT); if (retval > 0) kfifo_in(&es2->apb_log_fifo, buf, retval); } while (retval > 0); @@ -1116,7 +1116,7 @@ static int apb_log_poll(void *data) } static ssize_t apb_log_read(struct file *f, char __user *buf, - size_t count, loff_t *ppos) + size_t count, loff_t *ppos) { struct es2_ap_dev *es2 = file_inode(f)->i_private; ssize_t ret; @@ -1153,8 +1153,8 @@ static void usb_log_enable(struct es2_ap_dev *es2) return; /* XXX We will need to rename this per APB */ es2->apb_log_dentry = debugfs_create_file("apb_log", 0444, - gb_debugfs_get(), es2, - &apb_log_fops); + gb_debugfs_get(), es2, + &apb_log_fops); } static void usb_log_disable(struct es2_ap_dev *es2) @@ -1170,7 +1170,7 @@ static void usb_log_disable(struct es2_ap_dev *es2) } static ssize_t apb_log_enable_read(struct file *f, char __user *buf, - size_t count, loff_t *ppos) + size_t count, loff_t *ppos) { struct es2_ap_dev *es2 = file_inode(f)->i_private; int enable = !IS_ERR_OR_NULL(es2->apb_log_task); @@ -1181,7 +1181,7 @@ static ssize_t apb_log_enable_read(struct file *f, char __user *buf, } static ssize_t apb_log_enable_write(struct file *f, const char __user *buf, - size_t count, loff_t *ppos) + size_t count, loff_t *ppos) { int enable; ssize_t retval; @@ -1274,7 +1274,7 @@ static int ap_probe(struct usb_interface *interface, } hd = gb_hd_create(&es2_driver, &udev->dev, ES2_GBUF_MSG_SIZE_MAX, - num_cports); + num_cports); if (IS_ERR(hd)) { usb_put_dev(udev); return PTR_ERR(hd); @@ -1409,9 +1409,9 @@ static int ap_probe(struct usb_interface *interface, /* XXX We will need to rename this per APB */ es2->apb_log_enable_dentry = debugfs_create_file("apb_log_enable", - 0644, - gb_debugfs_get(), es2, - &apb_log_enable_fops); + 0644, + gb_debugfs_get(), es2, + &apb_log_enable_fops); INIT_LIST_HEAD(&es2->arpcs); spin_lock_init(&es2->arpc_lock); diff --git a/drivers/staging/greybus/gpio.c b/drivers/staging/greybus/gpio.c @@ -74,7 +74,7 @@ static int gb_gpio_activate_operation(struct gb_gpio_controller *ggc, u8 which) request.which = which; ret = gb_operation_sync(ggc->connection, GB_GPIO_TYPE_ACTIVATE, - &request, sizeof(request), NULL, 0); + &request, sizeof(request), NULL, 0); if (ret) { gbphy_runtime_put_autosuspend(gbphy_dev); return ret; @@ -86,7 +86,7 @@ static int gb_gpio_activate_operation(struct gb_gpio_controller *ggc, u8 which) } static void gb_gpio_deactivate_operation(struct gb_gpio_controller *ggc, - u8 which) + u8 which) { struct gbphy_device *gbphy_dev = ggc->gbphy_dev; struct device *dev = &gbphy_dev->dev; @@ -95,7 +95,7 @@ static void gb_gpio_deactivate_operation(struct gb_gpio_controller *ggc, request.which = which; ret = gb_operation_sync(ggc->connection, GB_GPIO_TYPE_DEACTIVATE, - &request, sizeof(request), NULL, 0); + &request, sizeof(request), NULL, 0); if (ret) { dev_err(dev, "failed to deactivate gpio %u\n", which); goto out_pm_put; @@ -108,7 +108,7 @@ out_pm_put: } static int gb_gpio_get_direction_operation(struct gb_gpio_controller *ggc, - u8 which) + u8 which) { struct device *dev = &ggc->gbphy_dev->dev; struct gb_gpio_get_direction_request request; @@ -133,7 +133,7 @@ static int gb_gpio_get_direction_operation(struct gb_gpio_controller *ggc, } static int gb_gpio_direction_in_operation(struct gb_gpio_controller *ggc, - u8 which) + u8 which) { struct gb_gpio_direction_in_request request; int ret; @@ -147,7 +147,7 @@ static int gb_gpio_direction_in_operation(struct gb_gpio_controller *ggc, } static int gb_gpio_direction_out_operation(struct gb_gpio_controller *ggc, - u8 which, bool value_high) + u8 which, bool value_high) { struct gb_gpio_direction_out_request request; int ret; @@ -162,7 +162,7 @@ static int gb_gpio_direction_out_operation(struct gb_gpio_controller *ggc, } static int gb_gpio_get_value_operation(struct gb_gpio_controller *ggc, - u8 which) + u8 which) { struct device *dev = &ggc->gbphy_dev->dev; struct gb_gpio_get_value_request request; @@ -214,7 +214,7 @@ static void gb_gpio_set_value_operation(struct gb_gpio_controller *ggc, } static int gb_gpio_set_debounce_operation(struct gb_gpio_controller *ggc, - u8 which, u16 debounce_usec) + u8 which, u16 debounce_usec) { struct gb_gpio_set_debounce_request request; int ret; @@ -257,7 +257,7 @@ static void _gb_gpio_irq_unmask(struct gb_gpio_controller *ggc, u8 hwirq) } static void _gb_gpio_irq_set_type(struct gb_gpio_controller *ggc, - u8 hwirq, u8 type) + u8 hwirq, u8 type) { struct device *dev = &ggc->gbphy_dev->dev; struct gb_gpio_irq_type_request request; @@ -589,10 +589,10 @@ static void gb_gpio_irqchip_remove(struct gb_gpio_controller *ggc) * before calling this function. */ static int gb_gpio_irqchip_add(struct gpio_chip *chip, - struct irq_chip *irqchip, - unsigned int first_irq, - irq_flow_handler_t handler, - unsigned int type) + struct irq_chip *irqchip, + unsigned int first_irq, + irq_flow_handler_t handler, + unsigned int type) { struct gb_gpio_controller *ggc; unsigned int offset; @@ -607,8 +607,8 @@ static int gb_gpio_irqchip_add(struct gpio_chip *chip, ggc->irq_handler = handler; ggc->irq_default_type = type; ggc->irqdomain = irq_domain_add_simple(NULL, - ggc->line_max + 1, first_irq, - &gb_gpio_domain_ops, chip); + ggc->line_max + 1, first_irq, + &gb_gpio_domain_ops, chip); if (!ggc->irqdomain) { ggc->irqchip = NULL; return -EINVAL; @@ -648,9 +648,10 @@ static int gb_gpio_probe(struct gbphy_device *gbphy_dev, if (!ggc) return -ENOMEM; - connection = gb_connection_create(gbphy_dev->bundle, - le16_to_cpu(gbphy_dev->cport_desc->id), - gb_gpio_request_handler); + connection = + gb_connection_create(gbphy_dev->bundle, + le16_to_cpu(gbphy_dev->cport_desc->id), + gb_gpio_request_handler); if (IS_ERR(connection)) { ret = PTR_ERR(connection); goto exit_ggc_free; @@ -703,7 +704,7 @@ static int gb_gpio_probe(struct gbphy_device *gbphy_dev, goto exit_line_free; ret = gb_gpio_irqchip_add(gpio, irqc, 0, - handle_level_irq, IRQ_TYPE_NONE); + handle_level_irq, IRQ_TYPE_NONE); if (ret) { dev_err(&gbphy_dev->dev, "failed to add irq chip: %d\n", ret); goto exit_line_free; diff --git a/drivers/staging/greybus/greybus_protocols.h b/drivers/staging/greybus/greybus_protocols.h @@ -878,10 +878,10 @@ struct gb_pwm_disable_request { /* Should match up with modes in linux/spi/spi.h */ #define GB_SPI_MODE_CPHA 0x01 /* clock phase */ #define GB_SPI_MODE_CPOL 0x02 /* clock polarity */ -#define GB_SPI_MODE_MODE_0 (0|0) /* (original MicroWire) */ -#define GB_SPI_MODE_MODE_1 (0|GB_SPI_MODE_CPHA) -#define GB_SPI_MODE_MODE_2 (GB_SPI_MODE_CPOL|0) -#define GB_SPI_MODE_MODE_3 (GB_SPI_MODE_CPOL|GB_SPI_MODE_CPHA) +#define GB_SPI_MODE_MODE_0 (0 | 0) /* (original MicroWire) */ +#define GB_SPI_MODE_MODE_1 (0 | GB_SPI_MODE_CPHA) +#define GB_SPI_MODE_MODE_2 (GB_SPI_MODE_CPOL | 0) +#define GB_SPI_MODE_MODE_3 (GB_SPI_MODE_CPOL | GB_SPI_MODE_CPHA) #define GB_SPI_MODE_CS_HIGH 0x04 /* chipselect active high? */ #define GB_SPI_MODE_LSB_FIRST 0x08 /* per-word bits-on-wire */ #define GB_SPI_MODE_3WIRE 0x10 /* SI/SO signals shared */ diff --git a/drivers/staging/greybus/hid.c b/drivers/staging/greybus/hid.c @@ -49,8 +49,8 @@ static int gb_hid_get_report_desc(struct gb_hid *ghid, char *rdesc) return ret; ret = gb_operation_sync(ghid->connection, GB_HID_TYPE_GET_REPORT_DESC, - NULL, 0, rdesc, - le16_to_cpu(ghid->hdesc.wReportDescLength)); + NULL, 0, rdesc, + le16_to_cpu(ghid->hdesc.wReportDescLength)); gb_pm_runtime_put_autosuspend(ghid->bundle); @@ -86,7 +86,7 @@ static int gb_hid_get_report(struct gb_hid *ghid, u8 report_type, u8 report_id, request.report_id = report_id; ret = gb_operation_sync(ghid->connection, GB_HID_TYPE_GET_REPORT, - &request, sizeof(request), buf, len); + &request, sizeof(request), buf, len); gb_pm_runtime_put_autosuspend(ghid->bundle); @@ -211,11 +211,13 @@ static void gb_hid_init_reports(struct gb_hid *ghid) struct hid_report *report; list_for_each_entry(report, - &hid->report_enum[HID_INPUT_REPORT].report_list, list) + &hid->report_enum[HID_INPUT_REPORT].report_list, + list) gb_hid_init_report(ghid, report); list_for_each_entry(report, - &hid->report_enum[HID_FEATURE_REPORT].report_list, list) + &hid->report_enum[HID_FEATURE_REPORT].report_list, + list) gb_hid_init_report(ghid, report); } @@ -259,8 +261,8 @@ static int __gb_hid_output_raw_report(struct hid_device *hid, __u8 *buf, } static int gb_hid_raw_request(struct hid_device *hid, unsigned char reportnum, - __u8 *buf, size_t len, unsigned char rtype, - int reqtype) + __u8 *buf, size_t len, unsigned char rtype, + int reqtype) { switch (reqtype) { case HID_REQ_GET_REPORT: @@ -440,7 +442,7 @@ static int gb_hid_probe(struct gb_bundle *bundle, return -ENOMEM; connection = gb_connection_create(bundle, le16_to_cpu(cport_desc->id), - gb_hid_request_handler); + gb_hid_request_handler); if (IS_ERR(connection)) { ret = PTR_ERR(connection); goto err_free_ghid; diff --git a/drivers/staging/greybus/i2c.c b/drivers/staging/greybus/i2c.c @@ -107,7 +107,7 @@ gb_i2c_operation_create(struct gb_connection *connection, /* Response consists only of incoming data */ operation = gb_operation_create(connection, GB_I2C_TYPE_TRANSFER, - request_size, data_in_size, GFP_KERNEL); + request_size, data_in_size, GFP_KERNEL); if (!operation) return NULL; @@ -137,7 +137,7 @@ gb_i2c_operation_create(struct gb_connection *connection, } static void gb_i2c_decode_response(struct i2c_msg *msgs, u32 msg_count, - struct gb_i2c_transfer_response *response) + struct gb_i2c_transfer_response *response) { struct i2c_msg *msg = msgs; u8 *data; @@ -164,7 +164,7 @@ static bool gb_i2c_expected_transfer_error(int errno) } static int gb_i2c_transfer_operation(struct gb_i2c_device *gb_i2c_dev, - struct i2c_msg *msgs, u32 msg_count) + struct i2c_msg *msgs, u32 msg_count) { struct gb_connection *connection = gb_i2c_dev->connection; struct device *dev = &gb_i2c_dev->gbphy_dev->dev; @@ -199,7 +199,7 @@ exit_operation_put: } static int gb_i2c_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, - int msg_count) + int msg_count) { struct gb_i2c_device *gb_i2c_dev; @@ -211,8 +211,8 @@ static int gb_i2c_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, #if 0 /* Later */ static int gb_i2c_smbus_xfer(struct i2c_adapter *adap, - u16 addr, unsigned short flags, char read_write, - u8 command, int size, union i2c_smbus_data *data) + u16 addr, unsigned short flags, char read_write, + u8 command, int size, union i2c_smbus_data *data) { struct gb_i2c_device *gb_i2c_dev; @@ -249,7 +249,7 @@ static int gb_i2c_device_setup(struct gb_i2c_device *gb_i2c_dev) } static int gb_i2c_probe(struct gbphy_device *gbphy_dev, - const struct gbphy_device_id *id) + const struct gbphy_device_id *id) { struct gb_connection *connection; struct gb_i2c_device *gb_i2c_dev; @@ -260,9 +260,10 @@ static int gb_i2c_probe(struct gbphy_device *gbphy_dev, if (!gb_i2c_dev) return -ENOMEM; - connection = gb_connection_create(gbphy_dev->bundle, - le16_to_cpu(gbphy_dev->cport_desc->id), - NULL); + connection = + gb_connection_create(gbphy_dev->bundle, + le16_to_cpu(gbphy_dev->cport_desc->id), + NULL); if (IS_ERR(connection)) { ret = PTR_ERR(connection); goto exit_i2cdev_free; diff --git a/drivers/staging/greybus/loopback.c b/drivers/staging/greybus/loopback.c @@ -47,8 +47,6 @@ struct gb_loopback_device { /* We need to take a lock in atomic context */ spinlock_t lock; - struct list_head list; - struct list_head list_op_async; wait_queue_head_t wq; }; @@ -68,7 +66,6 @@ struct gb_loopback { struct kfifo kfifo_lat; struct mutex mutex; struct task_struct *task; - struct list_head entry; struct device *dev; wait_queue_head_t wq; wait_queue_head_t wq_completion; @@ -144,7 +141,7 @@ static ssize_t name##_##field##_show(struct device *dev, \ /* Report 0 for min and max if no transfer successed */ \ if (!gb->requests_completed) \ return sprintf(buf, "0\n"); \ - return sprintf(buf, "%"#type"\n", gb->name.field); \ + return sprintf(buf, "%" #type "\n", gb->name.field); \ } \ static DEVICE_ATTR_RO(name##_##field) @@ -179,7 +176,7 @@ static ssize_t field##_show(struct device *dev, \ char *buf) \ { \ struct gb_loopback *gb = dev_get_drvdata(dev); \ - return sprintf(buf, "%"#type"\n", gb->field); \ + return sprintf(buf, "%" #type "\n", gb->field); \ } \ static ssize_t field##_store(struct device *dev, \ struct device_attribute *attr, \ @@ -215,7 +212,7 @@ static ssize_t field##_show(struct device *dev, \ char *buf) \ { \ struct gb_loopback *gb = dev_get_drvdata(dev); \ - return sprintf(buf, "%"#type"\n", gb->field); \ + return sprintf(buf, "%" #type "\n", gb->field); \ } \ static ssize_t field##_store(struct device *dev, \ struct device_attribute *attr, \ @@ -973,50 +970,7 @@ static int gb_loopback_dbgfs_latency_show(struct seq_file *s, void *unused) return gb_loopback_dbgfs_latency_show_common(s, &gb->kfifo_lat, &gb->mutex); } - -static int gb_loopback_latency_open(struct inode *inode, struct file *file) -{ - return single_open(file, gb_loopback_dbgfs_latency_show, - inode->i_private); -} - -static const struct file_operations gb_loopback_debugfs_latency_ops = { - .open = gb_loopback_latency_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static int gb_loopback_bus_id_compare(void *priv, struct list_head *lha, - struct list_head *lhb) -{ - struct gb_loopback *a = list_entry(lha, struct gb_loopback, entry); - struct gb_loopback *b = list_entry(lhb, struct gb_loopback, entry); - struct gb_connection *ca = a->connection; - struct gb_connection *cb = b->connection; - - if (ca->bundle->intf->interface_id < cb->bundle->intf->interface_id) - return -1; - if (cb->bundle->intf->interface_id < ca->bundle->intf->interface_id) - return 1; - if (ca->bundle->id < cb->bundle->id) - return -1; - if (cb->bundle->id < ca->bundle->id) - return 1; - if (ca->intf_cport_id < cb->intf_cport_id) - return -1; - else if (cb->intf_cport_id < ca->intf_cport_id) - return 1; - - return 0; -} - -static void gb_loopback_insert_id(struct gb_loopback *gb) -{ - /* perform an insertion sort */ - list_add_tail(&gb->entry, &gb_dev.list); - list_sort(NULL, &gb_dev.list, gb_loopback_bus_id_compare); -} +DEFINE_SHOW_ATTRIBUTE(gb_loopback_dbgfs_latency); #define DEBUGFS_NAMELEN 32 @@ -1076,7 +1030,7 @@ static int gb_loopback_probe(struct gb_bundle *bundle, snprintf(name, sizeof(name), "raw_latency_%s", dev_name(&connection->bundle->dev)); gb->file = debugfs_create_file(name, S_IFREG | 0444, gb_dev.root, gb, - &gb_loopback_debugfs_latency_ops); + &gb_loopback_dbgfs_latency_fops); gb->id = ida_simple_get(&loopback_ida, 0, 0, GFP_KERNEL); if (gb->id < 0) { @@ -1113,7 +1067,6 @@ static int gb_loopback_probe(struct gb_bundle *bundle, } spin_lock_irqsave(&gb_dev.lock, flags); - gb_loopback_insert_id(gb); gb_dev.count++; spin_unlock_irqrestore(&gb_dev.lock, flags); @@ -1169,7 +1122,6 @@ static void gb_loopback_disconnect(struct gb_bundle *bundle) spin_lock_irqsave(&gb_dev.lock, flags); gb_dev.count--; - list_del(&gb->entry); spin_unlock_irqrestore(&gb_dev.lock, flags); device_unregister(gb->dev); @@ -1196,8 +1148,6 @@ static int loopback_init(void) { int retval; - INIT_LIST_HEAD(&gb_dev.list); - INIT_LIST_HEAD(&gb_dev.list_op_async); spin_lock_init(&gb_dev.lock); gb_dev.root = debugfs_create_dir("gb_loopback", NULL); diff --git a/drivers/staging/greybus/module.c b/drivers/staging/greybus/module.c @@ -9,10 +9,9 @@ #include "greybus.h" #include "greybus_trace.h" - static ssize_t eject_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t len) + struct device_attribute *attr, + const char *buf, size_t len) { struct gb_module *module = to_gb_module(dev); struct gb_interface *intf; @@ -48,7 +47,7 @@ static ssize_t eject_store(struct device *dev, static DEVICE_ATTR_WO(eject); static ssize_t module_id_show(struct device *dev, - struct device_attribute *attr, char *buf) + struct device_attribute *attr, char *buf) { struct gb_module *module = to_gb_module(dev); @@ -57,7 +56,7 @@ static ssize_t module_id_show(struct device *dev, static DEVICE_ATTR_RO(module_id); static ssize_t num_interfaces_show(struct device *dev, - struct device_attribute *attr, char *buf) + struct device_attribute *attr, char *buf) { struct gb_module *module = to_gb_module(dev); @@ -88,7 +87,7 @@ struct device_type greybus_module_type = { }; struct gb_module *gb_module_create(struct gb_host_device *hd, u8 module_id, - size_t num_interfaces) + size_t num_interfaces) { struct gb_interface *intf; struct gb_module *module; @@ -117,7 +116,7 @@ struct gb_module *gb_module_create(struct gb_host_device *hd, u8 module_id, intf = gb_interface_create(module, module_id + i); if (!intf) { dev_err(&module->dev, "failed to create interface %u\n", - module_id + i); + module_id + i); goto err_put_interfaces; } module->interfaces[i] = intf; @@ -149,8 +148,8 @@ static void gb_module_register_interface(struct gb_interface *intf) if (ret) { if (intf->type != GB_INTERFACE_TYPE_DUMMY) { dev_err(&module->dev, - "failed to activate interface %u: %d\n", - intf_id, ret); + "failed to activate interface %u: %d\n", + intf_id, ret); } gb_interface_add(intf); @@ -164,7 +163,7 @@ static void gb_module_register_interface(struct gb_interface *intf) ret = gb_interface_enable(intf); if (ret) { dev_err(&module->dev, "failed to enable interface %u: %d\n", - intf_id, ret); + intf_id, ret); goto err_interface_deactivate; } diff --git a/drivers/staging/greybus/operation.c b/drivers/staging/greybus/operation.c @@ -31,7 +31,7 @@ static DECLARE_WAIT_QUEUE_HEAD(gb_operation_cancellation_queue); static DEFINE_SPINLOCK(gb_operations_lock); static int gb_operation_response_send(struct gb_operation *operation, - int errno); + int errno); /* * Increment operation active count and add to connection list unless the @@ -202,7 +202,7 @@ gb_operation_find_outgoing(struct gb_connection *connection, u16 operation_id) spin_lock_irqsave(&connection->lock, flags); list_for_each_entry(operation, &connection->operations, links) if (operation->id == operation_id && - !gb_operation_is_incoming(operation)) { + !gb_operation_is_incoming(operation)) { gb_operation_get(operation); found = true; break; @@ -307,8 +307,9 @@ static void gb_operation_timeout(struct timer_list *t) } static void gb_operation_message_init(struct gb_host_device *hd, - struct gb_message *message, u16 operation_id, - size_t payload_size, u8 type) + struct gb_message *message, + u16 operation_id, + size_t payload_size, u8 type) { struct gb_operation_msg_hdr *header; @@ -358,7 +359,7 @@ static void gb_operation_message_init(struct gb_host_device *hd, */ static struct gb_message * gb_operation_message_alloc(struct gb_host_device *hd, u8 type, - size_t payload_size, gfp_t gfp_flags) + size_t payload_size, gfp_t gfp_flags) { struct gb_message *message; struct gb_operation_msg_hdr *header; @@ -366,7 +367,7 @@ gb_operation_message_alloc(struct gb_host_device *hd, u8 type, if (message_size > hd->buffer_size_max) { dev_warn(&hd->dev, "requested message size too big (%zu > %zu)\n", - message_size, hd->buffer_size_max); + message_size, hd->buffer_size_max); return NULL; } @@ -465,7 +466,7 @@ static u8 gb_operation_errno_map(int errno) } bool gb_operation_response_alloc(struct gb_operation *operation, - size_t response_size, gfp_t gfp) + size_t response_size, gfp_t gfp) { struct gb_host_device *hd = operation->connection->hd; struct gb_operation_msg_hdr *request_header; @@ -516,8 +517,8 @@ EXPORT_SYMBOL_GPL(gb_operation_response_alloc); */ static struct gb_operation * gb_operation_create_common(struct gb_connection *connection, u8 type, - size_t request_size, size_t response_size, - unsigned long op_flags, gfp_t gfp_flags) + size_t request_size, size_t response_size, + unsigned long op_flags, gfp_t gfp_flags) { struct gb_host_device *hd = connection->hd; struct gb_operation *operation; @@ -572,9 +573,9 @@ err_cache: */ struct gb_operation * gb_operation_create_flags(struct gb_connection *connection, - u8 type, size_t request_size, - size_t response_size, unsigned long flags, - gfp_t gfp) + u8 type, size_t request_size, + size_t response_size, unsigned long flags, + gfp_t gfp) { struct gb_operation *operation; @@ -587,8 +588,8 @@ gb_operation_create_flags(struct gb_connection *connection, flags &= GB_OPERATION_FLAG_USER_MASK; operation = gb_operation_create_common(connection, type, - request_size, response_size, - flags, gfp); + request_size, response_size, + flags, gfp); if (operation) trace_gb_operation_create(operation); @@ -598,22 +599,23 @@ EXPORT_SYMBOL_GPL(gb_operation_create_flags); struct gb_operation * gb_operation_create_core(struct gb_connection *connection, - u8 type, size_t request_size, - size_t response_size, unsigned long flags, - gfp_t gfp) + u8 type, size_t request_size, + size_t response_size, unsigned long flags, + gfp_t gfp) { struct gb_operation *operation; flags |= GB_OPERATION_FLAG_CORE; operation = gb_operation_create_common(connection, type, - request_size, response_size, - flags, gfp); + request_size, response_size, + flags, gfp); if (operation) trace_gb_operation_create_core(operation); return operation; } + /* Do not export this function. */ size_t gb_operation_get_payload_size_max(struct gb_connection *connection) @@ -626,7 +628,7 @@ EXPORT_SYMBOL_GPL(gb_operation_get_payload_size_max); static struct gb_operation * gb_operation_create_incoming(struct gb_connection *connection, u16 id, - u8 type, void *data, size_t size) + u8 type, void *data, size_t size) { struct gb_operation *operation; size_t request_size; @@ -639,9 +641,9 @@ gb_operation_create_incoming(struct gb_connection *connection, u16 id, flags |= GB_OPERATION_FLAG_UNIDIRECTIONAL; operation = gb_operation_create_common(connection, type, - request_size, - GB_REQUEST_TYPE_INVALID, - flags, GFP_ATOMIC); + request_size, + GB_REQUEST_TYPE_INVALID, + flags, GFP_ATOMIC); if (!operation) return NULL; @@ -716,9 +718,9 @@ static void gb_operation_sync_callback(struct gb_operation *operation) * or a negative errno. */ int gb_operation_request_send(struct gb_operation *operation, - gb_operation_callback callback, - unsigned int timeout, - gfp_t gfp) + gb_operation_callback callback, + unsigned int timeout, + gfp_t gfp) { struct gb_connection *connection = operation->connection; struct gb_operation_msg_hdr *header; @@ -790,7 +792,7 @@ EXPORT_SYMBOL_GPL(gb_operation_request_send); * operation. */ int gb_operation_request_send_sync_timeout(struct gb_operation *operation, - unsigned int timeout) + unsigned int timeout) { int ret; @@ -819,13 +821,13 @@ EXPORT_SYMBOL_GPL(gb_operation_request_send_sync_timeout); * allocate the response message if necessary. */ static int gb_operation_response_send(struct gb_operation *operation, - int errno) + int errno) { struct gb_connection *connection = operation->connection; int ret; if (!operation->response && - !gb_operation_is_unidirectional(operation)) { + !gb_operation_is_unidirectional(operation)) { if (!gb_operation_response_alloc(operation, 0, GFP_KERNEL)) return -ENOMEM; } @@ -867,7 +869,7 @@ err_put: * This function is called when a message send request has completed. */ void greybus_message_sent(struct gb_host_device *hd, - struct gb_message *message, int status) + struct gb_message *message, int status) { struct gb_operation *operation = message->operation; struct gb_connection *connection = operation->connection; @@ -895,7 +897,7 @@ void greybus_message_sent(struct gb_host_device *hd, } else if (status || gb_operation_is_unidirectional(operation)) { if (gb_operation_result_set(operation, status)) { queue_work(gb_operation_completion_wq, - &operation->work); + &operation->work); } } } @@ -921,7 +923,7 @@ static void gb_connection_recv_request(struct gb_connection *connection, type = header->type; operation = gb_operation_create_incoming(connection, operation_id, - type, data, size); + type, data, size); if (!operation) { dev_err(&connection->hd->dev, "%s: can't create incoming operation\n", @@ -966,16 +968,16 @@ static void gb_connection_recv_response(struct gb_connection *connection, if (!operation_id) { dev_err_ratelimited(&connection->hd->dev, - "%s: invalid response id 0 received\n", - connection->name); + "%s: invalid response id 0 received\n", + connection->name); return; } operation = gb_operation_find_outgoing(connection, operation_id); if (!operation) { dev_err_ratelimited(&connection->hd->dev, - "%s: unexpected response id 0x%04x received\n", - connection->name, operation_id); + "%s: unexpected response id 0x%04x received\n", + connection->name, operation_id); return; } @@ -984,18 +986,18 @@ static void gb_connection_recv_response(struct gb_connection *connection, message_size = sizeof(*header) + message->payload_size; if (!errno && size > message_size) { dev_err_ratelimited(&connection->hd->dev, - "%s: malformed response 0x%02x received (%zu > %zu)\n", - connection->name, header->type, - size, message_size); + "%s: malformed response 0x%02x received (%zu > %zu)\n", + connection->name, header->type, + size, message_size); errno = -EMSGSIZE; } else if (!errno && size < message_size) { if (gb_operation_short_response_allowed(operation)) { message->payload_size = size - sizeof(*header); } else { dev_err_ratelimited(&connection->hd->dev, - "%s: short response 0x%02x received (%zu < %zu)\n", - connection->name, header->type, - size, message_size); + "%s: short response 0x%02x received (%zu < %zu)\n", + connection->name, header->type, + size, message_size); errno = -EMSGSIZE; } } @@ -1022,22 +1024,22 @@ static void gb_connection_recv_response(struct gb_connection *connection, * with, it's effectively dropped). */ void gb_connection_recv(struct gb_connection *connection, - void *data, size_t size) + void *data, size_t size) { struct gb_operation_msg_hdr header; struct device *dev = &connection->hd->dev; size_t msg_size; if (connection->state == GB_CONNECTION_STATE_DISABLED || - gb_connection_is_offloaded(connection)) { + gb_connection_is_offloaded(connection)) { dev_warn_ratelimited(dev, "%s: dropping %zu received bytes\n", - connection->name, size); + connection->name, size); return; } if (size < sizeof(header)) { dev_err_ratelimited(dev, "%s: short message received\n", - connection->name); + connection->name); return; } @@ -1046,19 +1048,19 @@ void gb_connection_recv(struct gb_connection *connection, msg_size = le16_to_cpu(header.size); if (size < msg_size) { dev_err_ratelimited(dev, - "%s: incomplete message 0x%04x of type 0x%02x received (%zu < %zu)\n", - connection->name, - le16_to_cpu(header.operation_id), - header.type, size, msg_size); + "%s: incomplete message 0x%04x of type 0x%02x received (%zu < %zu)\n", + connection->name, + le16_to_cpu(header.operation_id), + header.type, size, msg_size); return; /* XXX Should still complete operation */ } if (header.type & GB_MESSAGE_TYPE_RESPONSE) { gb_connection_recv_response(connection, &header, data, - msg_size); + msg_size); } else { gb_connection_recv_request(connection, &header, data, - msg_size); + msg_size); } } @@ -1079,7 +1081,7 @@ void gb_operation_cancel(struct gb_operation *operation, int errno) atomic_inc(&operation->waiters); wait_event(gb_operation_cancellation_queue, - !gb_operation_is_active(operation)); + !gb_operation_is_active(operation)); atomic_dec(&operation->waiters); } EXPORT_SYMBOL_GPL(gb_operation_cancel); @@ -1106,7 +1108,7 @@ void gb_operation_cancel_incoming(struct gb_operation *operation, int errno) atomic_inc(&operation->waiters); wait_event(gb_operation_cancellation_queue, - !gb_operation_is_active(operation)); + !gb_operation_is_active(operation)); atomic_dec(&operation->waiters); } @@ -1134,9 +1136,9 @@ void gb_operation_cancel_incoming(struct gb_operation *operation, int errno) * If there is an error, the response buffer is left alone. */ int gb_operation_sync_timeout(struct gb_connection *connection, int type, - void *request, int request_size, - void *response, int response_size, - unsigned int timeout) + void *request, int request_size, + void *response, int response_size, + unsigned int timeout) { struct gb_operation *operation; int ret; @@ -1187,8 +1189,9 @@ EXPORT_SYMBOL_GPL(gb_operation_sync_timeout); * the request as actually reached the remote end of the connection. */ int gb_operation_unidirectional_timeout(struct gb_connection *connection, - int type, void *request, int request_size, - unsigned int timeout) + int type, void *request, + int request_size, + unsigned int timeout) { struct gb_operation *operation; int ret; @@ -1197,9 +1200,9 @@ int gb_operation_unidirectional_timeout(struct gb_connection *connection, return -EINVAL; operation = gb_operation_create_flags(connection, type, - request_size, 0, - GB_OPERATION_FLAG_UNIDIRECTIONAL, - GFP_KERNEL); + request_size, 0, + GB_OPERATION_FLAG_UNIDIRECTIONAL, + GFP_KERNEL); if (!operation) return -ENOMEM; @@ -1222,17 +1225,19 @@ EXPORT_SYMBOL_GPL(gb_operation_unidirectional_timeout); int __init gb_operation_init(void) { gb_message_cache = kmem_cache_create("gb_message_cache", - sizeof(struct gb_message), 0, 0, NULL); + sizeof(struct gb_message), 0, 0, + NULL); if (!gb_message_cache) return -ENOMEM; gb_operation_cache = kmem_cache_create("gb_operation_cache", - sizeof(struct gb_operation), 0, 0, NULL); + sizeof(struct gb_operation), 0, + 0, NULL); if (!gb_operation_cache) goto err_destroy_message_cache; gb_operation_completion_wq = alloc_workqueue("greybus_completion", - 0, 0); + 0, 0); if (!gb_operation_completion_wq) goto err_destroy_operation_cache; diff --git a/drivers/staging/greybus/svc.c b/drivers/staging/greybus/svc.c @@ -20,11 +20,10 @@ struct gb_svc_deferred_request { struct gb_operation *operation; }; - static int gb_svc_queue_deferred_request(struct gb_operation *operation); static ssize_t endo_id_show(struct device *dev, - struct device_attribute *attr, char *buf) + struct device_attribute *attr, char *buf) { struct gb_svc *svc = to_gb_svc(dev); @@ -33,7 +32,7 @@ static ssize_t endo_id_show(struct device *dev, static DEVICE_ATTR_RO(endo_id); static ssize_t ap_intf_id_show(struct device *dev, - struct device_attribute *attr, char *buf) + struct device_attribute *attr, char *buf) { struct gb_svc *svc = to_gb_svc(dev); @@ -304,8 +303,8 @@ int gb_svc_intf_vsys_set(struct gb_svc *svc, u8 intf_id, bool enable) type = GB_SVC_TYPE_INTF_VSYS_DISABLE; ret = gb_operation_sync(svc->connection, type, - &request, sizeof(request), - &response, sizeof(response)); + &request, sizeof(request), + &response, sizeof(response)); if (ret < 0) return ret; if (response.result_code != GB_SVC_INTF_VSYS_OK) @@ -327,8 +326,8 @@ int gb_svc_intf_refclk_set(struct gb_svc *svc, u8 intf_id, bool enable) type = GB_SVC_TYPE_INTF_REFCLK_DISABLE; ret = gb_operation_sync(svc->connection, type, - &request, sizeof(request), - &response, sizeof(response)); + &request, sizeof(request), + &response, sizeof(response)); if (ret < 0) return ret; if (response.result_code != GB_SVC_INTF_REFCLK_OK) @@ -350,8 +349,8 @@ int gb_svc_intf_unipro_set(struct gb_svc *svc, u8 intf_id, bool enable) type = GB_SVC_TYPE_INTF_UNIPRO_DISABLE; ret = gb_operation_sync(svc->connection, type, - &request, sizeof(request), - &response, sizeof(response)); + &request, sizeof(request), + &response, sizeof(response)); if (ret < 0) return ret; if (response.result_code != GB_SVC_INTF_UNIPRO_OK) @@ -368,15 +367,15 @@ int gb_svc_intf_activate(struct gb_svc *svc, u8 intf_id, u8 *intf_type) request.intf_id = intf_id; ret = gb_operation_sync_timeout(svc->connection, - GB_SVC_TYPE_INTF_ACTIVATE, - &request, sizeof(request), - &response, sizeof(response), - SVC_INTF_ACTIVATE_TIMEOUT); + GB_SVC_TYPE_INTF_ACTIVATE, + &request, sizeof(request), + &response, sizeof(response), + SVC_INTF_ACTIVATE_TIMEOUT); if (ret < 0) return ret; if (response.status != GB_SVC_OP_SUCCESS) { dev_err(&svc->dev, "failed to activate interface %u: %u\n", - intf_id, response.status); + intf_id, response.status); return -EREMOTEIO; } @@ -430,14 +429,14 @@ int gb_svc_dme_peer_get(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector, &response, sizeof(response)); if (ret) { dev_err(&svc->dev, "failed to get DME attribute (%u 0x%04x %u): %d\n", - intf_id, attr, selector, ret); + intf_id, attr, selector, ret); return ret; } result = le16_to_cpu(response.result_code); if (result) { dev_err(&svc->dev, "UniPro error while getting DME attribute (%u 0x%04x %u): %u\n", - intf_id, attr, selector, result); + intf_id, attr, selector, result); return -EREMOTEIO; } @@ -465,14 +464,14 @@ int gb_svc_dme_peer_set(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector, &response, sizeof(response)); if (ret) { dev_err(&svc->dev, "failed to set DME attribute (%u 0x%04x %u %u): %d\n", - intf_id, attr, selector, value, ret); + intf_id, attr, selector, value, ret); return ret; } result = le16_to_cpu(response.result_code); if (result) { dev_err(&svc->dev, "UniPro error while setting DME attribute (%u 0x%04x %u %u): %u\n", - intf_id, attr, selector, value, result); + intf_id, attr, selector, value, result); return -EREMOTEIO; } @@ -480,9 +479,9 @@ int gb_svc_dme_peer_set(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector, } int gb_svc_connection_create(struct gb_svc *svc, - u8 intf1_id, u16 cport1_id, - u8 intf2_id, u16 cport2_id, - u8 cport_flags) + u8 intf1_id, u16 cport1_id, + u8 intf2_id, u16 cport2_id, + u8 cport_flags) { struct gb_svc_conn_create_request request; @@ -513,13 +512,13 @@ void gb_svc_connection_destroy(struct gb_svc *svc, u8 intf1_id, u16 cport1_id, &request, sizeof(request), NULL, 0); if (ret) { dev_err(&svc->dev, "failed to destroy connection (%u:%u %u:%u): %d\n", - intf1_id, cport1_id, intf2_id, cport2_id, ret); + intf1_id, cport1_id, intf2_id, cport2_id, ret); } } /* Creates bi-directional routes between the devices */ int gb_svc_route_create(struct gb_svc *svc, u8 intf1_id, u8 dev1_id, - u8 intf2_id, u8 dev2_id) + u8 intf2_id, u8 dev2_id) { struct gb_svc_route_create_request request; @@ -545,7 +544,7 @@ void gb_svc_route_destroy(struct gb_svc *svc, u8 intf1_id, u8 intf2_id) &request, sizeof(request), NULL, 0); if (ret) { dev_err(&svc->dev, "failed to destroy route (%u %u): %d\n", - intf1_id, intf2_id, ret); + intf1_id, intf2_id, ret); } } @@ -648,8 +647,8 @@ static int gb_svc_version_request(struct gb_operation *op) if (op->request->payload_size < sizeof(*request)) { dev_err(&svc->dev, "short version request (%zu < %zu)\n", - op->request->payload_size, - sizeof(*request)); + op->request->payload_size, + sizeof(*request)); return -EINVAL; } @@ -657,7 +656,7 @@ static int gb_svc_version_request(struct gb_operation *op) if (request->major > GB_SVC_VERSION_MAJOR) { dev_warn(&svc->dev, "unsupported major version (%u > %u)\n", - request->major, GB_SVC_VERSION_MAJOR); + request->major, GB_SVC_VERSION_MAJOR); return -ENOTSUPP; } @@ -845,8 +844,8 @@ static int gb_svc_hello(struct gb_operation *op) if (op->request->payload_size < sizeof(*hello_request)) { dev_warn(&svc->dev, "short hello request (%zu < %zu)\n", - op->request->payload_size, - sizeof(*hello_request)); + op->request->payload_size, + sizeof(*hello_request)); return -EINVAL; } @@ -877,7 +876,7 @@ err_unregister_device: } static struct gb_interface *gb_svc_interface_lookup(struct gb_svc *svc, - u8 intf_id) + u8 intf_id) { struct gb_host_device *hd = svc->hd; struct gb_module *module; @@ -889,7 +888,7 @@ static struct gb_interface *gb_svc_interface_lookup(struct gb_svc *svc, num_interfaces = module->num_interfaces; if (intf_id >= module_id && - intf_id < module_id + num_interfaces) { + intf_id < module_id + num_interfaces) { return module->interfaces[intf_id - module_id]; } } @@ -938,8 +937,8 @@ static void gb_svc_process_hello_deferred(struct gb_operation *operation) if (ret) dev_warn(&svc->dev, - "power mode change failed on AP to switch link: %d\n", - ret); + "power mode change failed on AP to switch link: %d\n", + ret); } static void gb_svc_process_module_inserted(struct gb_operation *operation) @@ -961,17 +960,17 @@ static void gb_svc_process_module_inserted(struct gb_operation *operation) flags = le16_to_cpu(request->flags); dev_dbg(&svc->dev, "%s - id = %u, num_interfaces = %zu, flags = 0x%04x\n", - __func__, module_id, num_interfaces, flags); + __func__, module_id, num_interfaces, flags); if (flags & GB_SVC_MODULE_INSERTED_FLAG_NO_PRIMARY) { dev_warn(&svc->dev, "no primary interface detected on module %u\n", - module_id); + module_id); } module = gb_svc_module_lookup(svc, module_id); if (module) { dev_warn(&svc->dev, "unexpected module-inserted event %u\n", - module_id); + module_id); return; } @@ -1007,7 +1006,7 @@ static void gb_svc_process_module_removed(struct gb_operation *operation) module = gb_svc_module_lookup(svc, module_id); if (!module) { dev_warn(&svc->dev, "unexpected module-removed event %u\n", - module_id); + module_id); return; } @@ -1066,7 +1065,7 @@ static void gb_svc_process_intf_mailbox_event(struct gb_operation *operation) mailbox = le32_to_cpu(request->mailbox); dev_dbg(&svc->dev, "%s - id = %u, result = 0x%04x, mailbox = 0x%08x\n", - __func__, intf_id, result_code, mailbox); + __func__, intf_id, result_code, mailbox); intf = gb_svc_interface_lookup(svc, intf_id); if (!intf) { @@ -1140,7 +1139,7 @@ static int gb_svc_intf_reset_recv(struct gb_operation *op) if (request->payload_size < sizeof(*reset)) { dev_warn(&svc->dev, "short reset request received (%zu < %zu)\n", - request->payload_size, sizeof(*reset)); + request->payload_size, sizeof(*reset)); return -EINVAL; } reset = request->payload; @@ -1157,14 +1156,14 @@ static int gb_svc_module_inserted_recv(struct gb_operation *op) if (op->request->payload_size < sizeof(*request)) { dev_warn(&svc->dev, "short module-inserted request received (%zu < %zu)\n", - op->request->payload_size, sizeof(*request)); + op->request->payload_size, sizeof(*request)); return -EINVAL; } request = op->request->payload; dev_dbg(&svc->dev, "%s - id = %u\n", __func__, - request->primary_intf_id); + request->primary_intf_id); return gb_svc_queue_deferred_request(op); } @@ -1176,14 +1175,14 @@ static int gb_svc_module_removed_recv(struct gb_operation *op) if (op->request->payload_size < sizeof(*request)) { dev_warn(&svc->dev, "short module-removed request received (%zu < %zu)\n", - op->request->payload_size, sizeof(*request)); + op->request->payload_size, sizeof(*request)); return -EINVAL; } request = op->request->payload; dev_dbg(&svc->dev, "%s - id = %u\n", __func__, - request->primary_intf_id); + request->primary_intf_id); return gb_svc_queue_deferred_request(op); } @@ -1209,7 +1208,7 @@ static int gb_svc_intf_mailbox_event_recv(struct gb_operation *op) if (op->request->payload_size < sizeof(*request)) { dev_warn(&svc->dev, "short mailbox request received (%zu < %zu)\n", - op->request->payload_size, sizeof(*request)); + op->request->payload_size, sizeof(*request)); return -EINVAL; } @@ -1254,7 +1253,7 @@ static int gb_svc_request_handler(struct gb_operation *op) if (ret) { dev_warn(&svc->dev, "unexpected request 0x%02x received (state %u)\n", - type, svc->state); + type, svc->state); return ret; } @@ -1329,10 +1328,10 @@ struct gb_svc *gb_svc_create(struct gb_host_device *hd) svc->hd = hd; svc->connection = gb_connection_create_static(hd, GB_SVC_CPORT_ID, - gb_svc_request_handler); + gb_svc_request_handler); if (IS_ERR(svc->connection)) { dev_err(&svc->dev, "failed to create connection: %ld\n", - PTR_ERR(svc->connection)); + PTR_ERR(svc->connection)); goto err_put_device; } diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c @@ -805,8 +805,8 @@ static const struct tty_operations gb_ops = { .tiocmget = gb_tty_tiocmget, .tiocmset = gb_tty_tiocmset, .get_icount = gb_tty_get_icount, - .set_serial = set_serial_info, - .get_serial = get_serial_info, + .set_serial = set_serial_info, + .get_serial = get_serial_info, }; static const struct tty_port_operations gb_port_ops = { diff --git a/drivers/staging/iio/adc/Kconfig b/drivers/staging/iio/adc/Kconfig @@ -73,6 +73,7 @@ config AD7192 config AD7280 tristate "Analog Devices AD7280A Lithium Ion Battery Monitoring System" depends on SPI + select CRC8 help Say yes here to build support for Analog Devices AD7280A Lithium Ion Battery Monitoring System. diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c @@ -6,6 +6,7 @@ * Licensed under the GPL-2. */ +#include <linux/crc8.h> #include <linux/device.h> #include <linux/kernel.h> #include <linux/slab.h> @@ -121,8 +122,6 @@ static unsigned int ad7280a_devaddr(unsigned int addr) * P(x) = x^8 + x^5 + x^3 + x^2 + x^1 + x^0 = 0b100101111 => 0x2F */ #define POLYNOM 0x2F -#define POLYNOM_ORDER 8 -#define HIGHBIT (1 << (POLYNOM_ORDER - 1)) struct ad7280_state { struct spi_device *spi; @@ -131,7 +130,7 @@ struct ad7280_state { int slave_num; int scan_cnt; int readback_delay_us; - unsigned char crc_tab[256]; + unsigned char crc_tab[CRC8_TABLE_SIZE]; unsigned char ctrl_hb; unsigned char ctrl_lb; unsigned char cell_threshhigh; @@ -144,23 +143,6 @@ struct ad7280_state { __be32 buf[2] ____cacheline_aligned; }; -static void ad7280_crc8_build_table(unsigned char *crc_tab) -{ - unsigned char bit, crc; - int cnt, i; - - for (cnt = 0; cnt < 256; cnt++) { - crc = cnt; - for (i = 0; i < 8; i++) { - bit = crc & HIGHBIT; - crc <<= 1; - if (bit) - crc ^= POLYNOM; - } - crc_tab[cnt] = crc; - } -} - static unsigned char ad7280_calc_crc8(unsigned char *crc_tab, unsigned int val) { unsigned char crc; @@ -256,7 +238,9 @@ static int ad7280_read(struct ad7280_state *st, unsigned int devaddr, if (ret) return ret; - __ad7280_read32(st, &tmp); + ret = __ad7280_read32(st, &tmp); + if (ret) + return ret; if (ad7280_check_crc(st, tmp)) return -EIO; @@ -294,7 +278,9 @@ static int ad7280_read_channel(struct ad7280_state *st, unsigned int devaddr, ad7280_delay(st); - __ad7280_read32(st, &tmp); + ret = __ad7280_read32(st, &tmp); + if (ret) + return ret; if (ad7280_check_crc(st, tmp)) return -EIO; @@ -327,7 +313,9 @@ static int ad7280_read_all_channels(struct ad7280_state *st, unsigned int cnt, ad7280_delay(st); for (i = 0; i < cnt; i++) { - __ad7280_read32(st, &tmp); + ret = __ad7280_read32(st, &tmp); + if (ret) + return ret; if (ad7280_check_crc(st, tmp)) return -EIO; @@ -342,6 +330,14 @@ static int ad7280_read_all_channels(struct ad7280_state *st, unsigned int cnt, return sum; } +static void ad7280_sw_power_down(void *data) +{ + struct ad7280_state *st = data; + + ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CONTROL_HB, 1, + AD7280A_CTRL_HB_PWRDN_SW | st->ctrl_hb); +} + static int ad7280_chain_setup(struct ad7280_state *st) { unsigned int val, n; @@ -362,26 +358,38 @@ static int ad7280_chain_setup(struct ad7280_state *st) AD7280A_CTRL_LB_MUST_SET | st->ctrl_lb); if (ret) - return ret; + goto error_power_down; ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_READ, 1, AD7280A_CONTROL_LB << 2); if (ret) - return ret; + goto error_power_down; for (n = 0; n <= AD7280A_MAX_CHAIN; n++) { - __ad7280_read32(st, &val); + ret = __ad7280_read32(st, &val); + if (ret) + goto error_power_down; + if (val == 0) return n - 1; - if (ad7280_check_crc(st, val)) - return -EIO; + if (ad7280_check_crc(st, val)) { + ret = -EIO; + goto error_power_down; + } - if (n != ad7280a_devaddr(val >> 27)) - return -EIO; + if (n != ad7280a_devaddr(val >> 27)) { + ret = -EIO; + goto error_power_down; + } } + ret = -EFAULT; + +error_power_down: + ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CONTROL_HB, 1, + AD7280A_CTRL_HB_PWRDN_SW | st->ctrl_hb); - return -EFAULT; + return ret; } static ssize_t ad7280_show_balance_sw(struct device *dev, @@ -492,8 +500,8 @@ static int ad7280_channel_init(struct ad7280_state *st) { int dev, ch, cnt; - st->channels = kcalloc((st->slave_num + 1) * 12 + 2, - sizeof(*st->channels), GFP_KERNEL); + st->channels = devm_kcalloc(&st->spi->dev, (st->slave_num + 1) * 12 + 2, + sizeof(*st->channels), GFP_KERNEL); if (!st->channels) return -ENOMEM; @@ -552,48 +560,47 @@ static int ad7280_channel_init(struct ad7280_state *st) static int ad7280_attr_init(struct ad7280_state *st) { int dev, ch, cnt; + unsigned int index; + struct iio_dev_attr *iio_attr; - st->iio_attr = kcalloc(2, sizeof(*st->iio_attr) * - (st->slave_num + 1) * AD7280A_CELLS_PER_DEV, - GFP_KERNEL); + st->iio_attr = devm_kcalloc(&st->spi->dev, 2, sizeof(*st->iio_attr) * + (st->slave_num + 1) * AD7280A_CELLS_PER_DEV, + GFP_KERNEL); if (!st->iio_attr) return -ENOMEM; for (dev = 0, cnt = 0; dev <= st->slave_num; dev++) for (ch = AD7280A_CELL_VOLTAGE_1; ch <= AD7280A_CELL_VOLTAGE_6; ch++, cnt++) { - st->iio_attr[cnt].address = - ad7280a_devaddr(dev) << 8 | ch; - st->iio_attr[cnt].dev_attr.attr.mode = - 0644; - st->iio_attr[cnt].dev_attr.show = - ad7280_show_balance_sw; - st->iio_attr[cnt].dev_attr.store = - ad7280_store_balance_sw; - st->iio_attr[cnt].dev_attr.attr.name = - kasprintf(GFP_KERNEL, - "in%d-in%d_balance_switch_en", - dev * AD7280A_CELLS_PER_DEV + ch, - dev * AD7280A_CELLS_PER_DEV + ch + 1); - ad7280_attributes[cnt] = - &st->iio_attr[cnt].dev_attr.attr; + iio_attr = &st->iio_attr[cnt]; + index = dev * AD7280A_CELLS_PER_DEV + ch; + iio_attr->address = ad7280a_devaddr(dev) << 8 | ch; + iio_attr->dev_attr.attr.mode = 0644; + iio_attr->dev_attr.show = ad7280_show_balance_sw; + iio_attr->dev_attr.store = ad7280_store_balance_sw; + iio_attr->dev_attr.attr.name = + devm_kasprintf(&st->spi->dev, GFP_KERNEL, + "in%d-in%d_balance_switch_en", + index, index + 1); + if (!iio_attr->dev_attr.attr.name) + return -ENOMEM; + + ad7280_attributes[cnt] = &iio_attr->dev_attr.attr; cnt++; - st->iio_attr[cnt].address = - ad7280a_devaddr(dev) << 8 | + iio_a