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commit 579a70035949b771a63a686db8becdd9b197d986
parent 030672aea826adf3dee9100ee8ac303b62c8fe7f
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Fri, 28 Dec 2018 20:22:45 -0800

Merge tag 'for-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

Pull power supply and reset updates from Sebastian Reichel:

 - New core support:
    - battery internal resistance
    - battery OCV capacity lookup table
    - support for custom sysfs attributes

 - Convert all drivers to use power-supply core support for custom sysfs
   attributes

 - bq24190-charger: bq24196 support

 - axp20x-charger: AXP813 support

 - sc27xx-battery: new fuel gauge driver

 - gpio-poweroff: support for specific active and inactive delays

 - Misc fixes

* tag 'for-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (53 commits)
  power: supply: bq25890: fix BAT_COMP field definition
  power: supply: gpio-charger: Do not use deprecated POWER_SUPPLY_TYPE_USB_*
  power: supply: ds2781: switch to devm_power_supply_register
  power: supply: ds2780: switch to devm_power_supply_register
  power: supply: ds2781: fix race-condition in bin attribute registration
  power: supply: ds2780: fix race-condition in bin attribute registration
  power: supply: pcf50633: fix race-condition in sysfs registration
  power: supply: charger-manager: fix race-condition in sysfs registration
  power: supply: charger-manager: simplify generation of sysfs attribute group name
  power: supply: bq24257: fix race-condition in sysfs registration
  power: supply: bq24190_charger: fix race-condition in sysfs registration
  power: supply: lp8788: fix race-condition in sysfs registration
  power: supply: ds2781: fix race-condition in sysfs registration
  power: supply: ds2780: fix race-condition in sysfs registration
  power: supply: bq2415x: fix race-condition in sysfs registration
  power: supply: core: add support for custom sysfs attributes
  power: supply: sc27xx: Save last battery capacity
  power: reset: at91-poweroff: move shdwc related data to one structure
  power: supply: sc27xx: Add suspend/resume interfaces
  power: supply: sc27xx: Add fuel gauge low voltage alarm
  ...

Diffstat:
MDocumentation/devicetree/bindings/power/reset/gpio-poweroff.txt | 2++
MDocumentation/devicetree/bindings/power/supply/axp20x_ac_power.txt | 3+++
MDocumentation/devicetree/bindings/power/supply/battery.txt | 17+++++++++++++++++
MDocumentation/devicetree/bindings/power/supply/bq24190.txt | 10++++++++++
ADocumentation/devicetree/bindings/power/supply/sc27xx-fg.txt | 56++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Mdrivers/power/reset/at91-poweroff.c | 86++++++++++++++++++++++++++++++++++++++++---------------------------------------
Mdrivers/power/reset/gpio-poweroff.c | 10++++++++--
Mdrivers/power/reset/ocelot-reset.c | 12++++++++++++
Mdrivers/power/supply/Kconfig | 8++++++++
Mdrivers/power/supply/Makefile | 1+
Mdrivers/power/supply/axp20x_ac_power.c | 94+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Mdrivers/power/supply/axp20x_usb_power.c | 1+
Mdrivers/power/supply/axp288_charger.c | 35++++++++++++++++++-----------------
Mdrivers/power/supply/bq2415x_charger.c | 119+++++++++++++++++++++++++++++++++----------------------------------------------
Mdrivers/power/supply/bq24190_charger.c | 91+++++++++++++++++++++++++++++++++++++++++++++++--------------------------------
Mdrivers/power/supply/bq24257_charger.c | 15+++------------
Mdrivers/power/supply/bq25890_charger.c | 2+-
Mdrivers/power/supply/charger-manager.c | 89++++++++++++++++++++++++++++++++-----------------------------------------------
Mdrivers/power/supply/cpcap-battery.c | 2+-
Mdrivers/power/supply/cpcap-charger.c | 2+-
Mdrivers/power/supply/ds2780_battery.c | 87++++++++++++++++++++++---------------------------------------------------------
Mdrivers/power/supply/ds2781_battery.c | 82++++++++++++++++++++++---------------------------------------------------------
Mdrivers/power/supply/gpio-charger.c | 6+++---
Mdrivers/power/supply/lp8788-charger.c | 62+++++++++++++++++++++++++++-----------------------------------
Mdrivers/power/supply/olpc_battery.c | 4++--
Mdrivers/power/supply/pcf50633-charger.c | 17+++++++----------
Mdrivers/power/supply/power_supply_core.c | 141++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
Mdrivers/power/supply/sc2731_charger.c | 54+++++++++++++++++++++++++++++++++++++++++++++---------
Adrivers/power/supply/sc27xx_fuel_gauge.c | 1075+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Minclude/linux/mfd/axp20x.h | 1+
Minclude/linux/power/charger-manager.h | 3++-
Minclude/linux/power_supply.h | 23+++++++++++++++++++++++
32 files changed, 1791 insertions(+), 419 deletions(-)

diff --git a/Documentation/devicetree/bindings/power/reset/gpio-poweroff.txt b/Documentation/devicetree/bindings/power/reset/gpio-poweroff.txt @@ -27,6 +27,8 @@ Optional properties: it to an output when the power-off handler is called. If this optional property is not specified, the GPIO is initialized as an output in its inactive state. +- active-delay-ms: Delay (default 100) to wait after driving gpio active +- inactive-delay-ms: Delay (default 100) to wait after driving gpio inactive - timeout-ms: Time to wait before asserting a WARN_ON(1). If nothing is specified, 3000 ms is used. diff --git a/Documentation/devicetree/bindings/power/supply/axp20x_ac_power.txt b/Documentation/devicetree/bindings/power/supply/axp20x_ac_power.txt @@ -4,6 +4,7 @@ Required Properties: - compatible: One of: "x-powers,axp202-ac-power-supply" "x-powers,axp221-ac-power-supply" + "x-powers,axp813-ac-power-supply" This node is a subnode of the axp20x PMIC. @@ -13,6 +14,8 @@ reading ADC channels from the AXP20X ADC. The AXP22X is only able to tell if an AC power supply is present and usable. +AXP813/AXP803 are able to limit current and supply voltage + Example: &axp209 { diff --git a/Documentation/devicetree/bindings/power/supply/battery.txt b/Documentation/devicetree/bindings/power/supply/battery.txt @@ -22,6 +22,18 @@ Optional Properties: - charge-term-current-microamp: current for charge termination phase - constant-charge-current-max-microamp: maximum constant input current - constant-charge-voltage-max-microvolt: maximum constant input voltage + - factory-internal-resistance-micro-ohms: battery factory internal resistance + - ocv-capacity-table-0: An array providing the open circuit voltage (OCV) + of the battery and corresponding battery capacity percent, which is used + to look up battery capacity according to current OCV value. And the open + circuit voltage unit is microvolt. + - ocv-capacity-table-1: Same as ocv-capacity-table-0 + ...... + - ocv-capacity-table-n: Same as ocv-capacity-table-0 + - ocv-capacity-celsius: An array containing the temperature in degree Celsius, + for each of the battery capacity lookup table. The first temperature value + specifies the OCV table 0, and the second temperature value specifies the + OCV table 1, and so on. Battery properties are named, where possible, for the corresponding elements in enum power_supply_property, defined in @@ -42,6 +54,11 @@ Example: charge-term-current-microamp = <128000>; constant-charge-current-max-microamp = <900000>; constant-charge-voltage-max-microvolt = <4200000>; + factory-internal-resistance-micro-ohms = <250000>; + ocv-capacity-celsius = <(-10) 0 10>; + ocv-capacity-table-0 = <4185000 100>, <4113000 95>, <4066000 90>, ...; + ocv-capacity-table-1 = <4200000 100>, <4185000 95>, <4113000 90>, ...; + ocv-capacity-table-2 = <4250000 100>, <4200000 95>, <4185000 90>, ...; }; charger: charger@11 { diff --git a/Documentation/devicetree/bindings/power/supply/bq24190.txt b/Documentation/devicetree/bindings/power/supply/bq24190.txt @@ -3,7 +3,9 @@ TI BQ24190 Li-Ion Battery Charger Required properties: - compatible: contains one of the following: * "ti,bq24190" + * "ti,bq24192" * "ti,bq24192i" + * "ti,bq24196" - reg: integer, I2C address of the charger. - interrupts[-extended]: configuration for charger INT pin. @@ -19,6 +21,12 @@ Optional properties: - ti,system-minimum-microvolt: when power is connected and the battery is below minimum system voltage, the system will be regulated above this setting. +child nodes: +- usb-otg-vbus: + Usage: optional + Description: Regulator that is used to control the VBUS voltage direction for + either USB host mode or for charging on the OTG port. + Notes: - Some circuit boards wire the chip's "OTG" pin high (enabling 500mA default charge current on USB SDP ports, among other features). To simulate this on @@ -39,6 +47,8 @@ Example: interrupts-extended = <&gpiochip 10 IRQ_TYPE_EDGE_FALLING>; monitored-battery = <&bat>; ti,system-minimum-microvolt = <3200000>; + + usb_otg_vbus: usb-otg-vbus { }; }; &twl_gpio { diff --git a/Documentation/devicetree/bindings/power/supply/sc27xx-fg.txt b/Documentation/devicetree/bindings/power/supply/sc27xx-fg.txt @@ -0,0 +1,56 @@ +Spreadtrum SC27XX PMICs Fuel Gauge Unit Power Supply Bindings + +Required properties: +- compatible: Should be one of the following: + "sprd,sc2720-fgu", + "sprd,sc2721-fgu", + "sprd,sc2723-fgu", + "sprd,sc2730-fgu", + "sprd,sc2731-fgu". +- reg: The address offset of fuel gauge unit. +- battery-detect-gpios: GPIO for battery detection. +- io-channels: Specify the IIO ADC channel to get temperature. +- io-channel-names: Should be "bat-temp". +- nvmem-cells: A phandle to the calibration cells provided by eFuse device. +- nvmem-cell-names: Should be "fgu_calib". +- monitored-battery: Phandle of battery characteristics devicetree node. + See Documentation/devicetree/bindings/power/supply/battery.txt + +Example: + + bat: battery { + compatible = "simple-battery"; + charge-full-design-microamp-hours = <1900000>; + constant-charge-voltage-max-microvolt = <4350000>; + ocv-capacity-celsius = <20>; + ocv-capacity-table-0 = <4185000 100>, <4113000 95>, <4066000 90>, + <4022000 85>, <3983000 80>, <3949000 75>, + <3917000 70>, <3889000 65>, <3864000 60>, + <3835000 55>, <3805000 50>, <3787000 45>, + <3777000 40>, <3773000 35>, <3770000 30>, + <3765000 25>, <3752000 20>, <3724000 15>, + <3680000 10>, <3605000 5>, <3400000 0>; + ...... + }; + + sc2731_pmic: pmic@0 { + compatible = "sprd,sc2731"; + reg = <0>; + spi-max-frequency = <26000000>; + interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>; + interrupt-controller; + #interrupt-cells = <2>; + #address-cells = <1>; + #size-cells = <0>; + + fgu@a00 { + compatible = "sprd,sc2731-fgu"; + reg = <0xa00>; + battery-detect-gpios = <&pmic_eic 9 GPIO_ACTIVE_HIGH>; + io-channels = <&pmic_adc 5>; + io-channel-names = "bat-temp"; + nvmem-cells = <&fgu_calib>; + nvmem-cell-names = "fgu_calib"; + monitored-battery = <&bat>; + }; + }; diff --git a/drivers/power/reset/at91-poweroff.c b/drivers/power/reset/at91-poweroff.c @@ -51,14 +51,16 @@ static const char *shdwc_wakeup_modes[] = { [AT91_SHDW_WKMODE0_ANYLEVEL] = "any", }; -static void __iomem *at91_shdwc_base; -static struct clk *sclk; -static void __iomem *mpddrc_base; +static struct shdwc { + struct clk *sclk; + void __iomem *shdwc_base; + void __iomem *mpddrc_base; +} at91_shdwc; static void __init at91_wakeup_status(struct platform_device *pdev) { const char *reason; - u32 reg = readl(at91_shdwc_base + AT91_SHDW_SR); + u32 reg = readl(at91_shdwc.shdwc_base + AT91_SHDW_SR); /* Simple power-on, just bail out */ if (!reg) @@ -76,11 +78,6 @@ static void __init at91_wakeup_status(struct platform_device *pdev) static void at91_poweroff(void) { - writel(AT91_SHDW_KEY | AT91_SHDW_SHDW, at91_shdwc_base + AT91_SHDW_CR); -} - -static void at91_lpddr_poweroff(void) -{ asm volatile( /* Align to cache lines */ ".balign 32\n\t" @@ -89,15 +86,17 @@ static void at91_lpddr_poweroff(void) " ldr r6, [%2, #" __stringify(AT91_SHDW_CR) "]\n\t" /* Power down SDRAM0 */ + " tst %0, #0\n\t" + " beq 1f\n\t" " str %1, [%0, #" __stringify(AT91_DDRSDRC_LPR) "]\n\t" /* Shutdown CPU */ - " str %3, [%2, #" __stringify(AT91_SHDW_CR) "]\n\t" + "1: str %3, [%2, #" __stringify(AT91_SHDW_CR) "]\n\t" " b .\n\t" : - : "r" (mpddrc_base), + : "r" (at91_shdwc.mpddrc_base), "r" cpu_to_le32(AT91_DDRSDRC_LPDDR2_PWOFF), - "r" (at91_shdwc_base), + "r" (at91_shdwc.shdwc_base), "r" cpu_to_le32(AT91_SHDW_KEY | AT91_SHDW_SHDW) : "r6"); } @@ -147,7 +146,7 @@ static void at91_poweroff_dt_set_wakeup_mode(struct platform_device *pdev) if (of_property_read_bool(np, "atmel,wakeup-rtt-timer")) mode |= AT91_SHDW_RTTWKEN; - writel(wakeup_mode | mode, at91_shdwc_base + AT91_SHDW_MR); + writel(wakeup_mode | mode, at91_shdwc.shdwc_base + AT91_SHDW_MR); } static int __init at91_poweroff_probe(struct platform_device *pdev) @@ -158,15 +157,15 @@ static int __init at91_poweroff_probe(struct platform_device *pdev) int ret; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - at91_shdwc_base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(at91_shdwc_base)) - return PTR_ERR(at91_shdwc_base); + at91_shdwc.shdwc_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(at91_shdwc.shdwc_base)) + return PTR_ERR(at91_shdwc.shdwc_base); - sclk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(sclk)) - return PTR_ERR(sclk); + at91_shdwc.sclk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(at91_shdwc.sclk)) + return PTR_ERR(at91_shdwc.sclk); - ret = clk_prepare_enable(sclk); + ret = clk_prepare_enable(at91_shdwc.sclk); if (ret) { dev_err(&pdev->dev, "Could not enable slow clock\n"); return ret; @@ -177,44 +176,47 @@ static int __init at91_poweroff_probe(struct platform_device *pdev) if (pdev->dev.of_node) at91_poweroff_dt_set_wakeup_mode(pdev); - pm_power_off = at91_poweroff; - np = of_find_compatible_node(NULL, NULL, "atmel,sama5d3-ddramc"); - if (!np) - return 0; + if (np) { + at91_shdwc.mpddrc_base = of_iomap(np, 0); + of_node_put(np); - mpddrc_base = of_iomap(np, 0); - of_node_put(np); + if (!at91_shdwc.mpddrc_base) { + ret = -ENOMEM; + goto clk_disable; + } - if (!mpddrc_base) - return 0; + ddr_type = readl(at91_shdwc.mpddrc_base + AT91_DDRSDRC_MDR) & + AT91_DDRSDRC_MD; + if (ddr_type != AT91_DDRSDRC_MD_LPDDR2 && + ddr_type != AT91_DDRSDRC_MD_LPDDR3) { + iounmap(at91_shdwc.mpddrc_base); + at91_shdwc.mpddrc_base = NULL; + } + } - ddr_type = readl(mpddrc_base + AT91_DDRSDRC_MDR) & AT91_DDRSDRC_MD; - if ((ddr_type == AT91_DDRSDRC_MD_LPDDR2) || - (ddr_type == AT91_DDRSDRC_MD_LPDDR3)) - pm_power_off = at91_lpddr_poweroff; - else - iounmap(mpddrc_base); + pm_power_off = at91_poweroff; return 0; + +clk_disable: + clk_disable_unprepare(at91_shdwc.sclk); + return ret; } static int __exit at91_poweroff_remove(struct platform_device *pdev) { - if (pm_power_off == at91_poweroff || - pm_power_off == at91_lpddr_poweroff) + if (pm_power_off == at91_poweroff) pm_power_off = NULL; - clk_disable_unprepare(sclk); + if (at91_shdwc.mpddrc_base) + iounmap(at91_shdwc.mpddrc_base); + + clk_disable_unprepare(at91_shdwc.sclk); return 0; } -static const struct of_device_id at91_ramc_of_match[] = { - { .compatible = "atmel,sama5d3-ddramc", }, - { /* sentinel */ } -}; - static const struct of_device_id at91_poweroff_of_match[] = { { .compatible = "atmel,at91sam9260-shdwc", }, { .compatible = "atmel,at91sam9rl-shdwc", }, diff --git a/drivers/power/reset/gpio-poweroff.c b/drivers/power/reset/gpio-poweroff.c @@ -26,6 +26,8 @@ */ static struct gpio_desc *reset_gpio; static u32 timeout = DEFAULT_TIMEOUT_MS; +static u32 active_delay = 100; +static u32 inactive_delay = 100; static void gpio_poweroff_do_poweroff(void) { @@ -33,10 +35,11 @@ static void gpio_poweroff_do_poweroff(void) /* drive it active, also inactive->active edge */ gpiod_direction_output(reset_gpio, 1); - mdelay(100); + mdelay(active_delay); + /* drive inactive, also active->inactive edge */ gpiod_set_value_cansleep(reset_gpio, 0); - mdelay(100); + mdelay(inactive_delay); /* drive it active, also inactive->active edge */ gpiod_set_value_cansleep(reset_gpio, 1); @@ -66,6 +69,9 @@ static int gpio_poweroff_probe(struct platform_device *pdev) else flags = GPIOD_OUT_LOW; + device_property_read_u32(&pdev->dev, "active-delay-ms", &active_delay); + device_property_read_u32(&pdev->dev, "inactive-delay-ms", + &inactive_delay); device_property_read_u32(&pdev->dev, "timeout-ms", &timeout); reset_gpio = devm_gpiod_get(&pdev->dev, NULL, flags); diff --git a/drivers/power/reset/ocelot-reset.c b/drivers/power/reset/ocelot-reset.c @@ -26,6 +26,13 @@ struct ocelot_reset_context { #define SOFT_CHIP_RST BIT(0) +#define ICPU_CFG_CPU_SYSTEM_CTRL_GENERAL_CTRL 0x24 +#define IF_SI_OWNER_MASK GENMASK(1, 0) +#define IF_SI_OWNER_SISL 0 +#define IF_SI_OWNER_SIBM 1 +#define IF_SI_OWNER_SIMC 2 +#define IF_SI_OWNER_OFFSET 4 + static int ocelot_restart_handle(struct notifier_block *this, unsigned long mode, void *cmd) { @@ -37,6 +44,11 @@ static int ocelot_restart_handle(struct notifier_block *this, regmap_update_bits(ctx->cpu_ctrl, ICPU_CFG_CPU_SYSTEM_CTRL_RESET, CORE_RST_PROTECT, 0); + /* Make the SI back to boot mode */ + regmap_update_bits(ctx->cpu_ctrl, ICPU_CFG_CPU_SYSTEM_CTRL_GENERAL_CTRL, + IF_SI_OWNER_MASK << IF_SI_OWNER_OFFSET, + IF_SI_OWNER_SIBM << IF_SI_OWNER_OFFSET); + writel(SOFT_CHIP_RST, ctx->base); pr_emerg("Unable to restart system\n"); diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig @@ -652,4 +652,12 @@ config CHARGER_SC2731 Say Y here to enable support for battery charging with SC2731 PMIC chips. +config FUEL_GAUGE_SC27XX + tristate "Spreadtrum SC27XX fuel gauge driver" + depends on MFD_SC27XX_PMIC || COMPILE_TEST + depends on IIO + help + Say Y here to enable support for fuel gauge with SC27XX + PMIC chips. + endif # POWER_SUPPLY diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile @@ -86,3 +86,4 @@ obj-$(CONFIG_AXP288_FUEL_GAUGE) += axp288_fuel_gauge.o obj-$(CONFIG_AXP288_CHARGER) += axp288_charger.o obj-$(CONFIG_CHARGER_CROS_USBPD) += cros_usbpd-charger.o obj-$(CONFIG_CHARGER_SC2731) += sc2731_charger.o +obj-$(CONFIG_FUEL_GAUGE_SC27XX) += sc27xx_fuel_gauge.o diff --git a/drivers/power/supply/axp20x_ac_power.c b/drivers/power/supply/axp20x_ac_power.c @@ -27,6 +27,16 @@ #define AXP20X_PWR_STATUS_ACIN_PRESENT BIT(7) #define AXP20X_PWR_STATUS_ACIN_AVAIL BIT(6) +#define AXP813_VHOLD_MASK GENMASK(5, 3) +#define AXP813_VHOLD_UV_TO_BIT(x) ((((x) / 100000) - 40) << 3) +#define AXP813_VHOLD_REG_TO_UV(x) \ + (((((x) & AXP813_VHOLD_MASK) >> 3) + 40) * 100000) + +#define AXP813_CURR_LIMIT_MASK GENMASK(2, 0) +#define AXP813_CURR_LIMIT_UA_TO_BIT(x) (((x) / 500000) - 3) +#define AXP813_CURR_LIMIT_REG_TO_UA(x) \ + ((((x) & AXP813_CURR_LIMIT_MASK) + 3) * 500000) + #define DRVNAME "axp20x-ac-power-supply" struct axp20x_ac_power { @@ -102,6 +112,57 @@ static int axp20x_ac_power_get_property(struct power_supply *psy, return 0; + case POWER_SUPPLY_PROP_VOLTAGE_MIN: + ret = regmap_read(power->regmap, AXP813_ACIN_PATH_CTRL, &reg); + if (ret) + return ret; + + val->intval = AXP813_VHOLD_REG_TO_UV(reg); + + return 0; + + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = regmap_read(power->regmap, AXP813_ACIN_PATH_CTRL, &reg); + if (ret) + return ret; + + val->intval = AXP813_CURR_LIMIT_REG_TO_UA(reg); + /* AXP813 datasheet defines values 11x as 4000mA */ + if (val->intval > 4000000) + val->intval = 4000000; + + return 0; + + default: + return -EINVAL; + } + + return -EINVAL; +} + +static int axp813_ac_power_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct axp20x_ac_power *power = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_VOLTAGE_MIN: + if (val->intval < 4000000 || val->intval > 4700000) + return -EINVAL; + + return regmap_update_bits(power->regmap, AXP813_ACIN_PATH_CTRL, + AXP813_VHOLD_MASK, + AXP813_VHOLD_UV_TO_BIT(val->intval)); + + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + if (val->intval < 1500000 || val->intval > 4000000) + return -EINVAL; + + return regmap_update_bits(power->regmap, AXP813_ACIN_PATH_CTRL, + AXP813_CURR_LIMIT_MASK, + AXP813_CURR_LIMIT_UA_TO_BIT(val->intval)); + default: return -EINVAL; } @@ -109,6 +170,13 @@ static int axp20x_ac_power_get_property(struct power_supply *psy, return -EINVAL; } +static int axp813_ac_power_prop_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + return psp == POWER_SUPPLY_PROP_VOLTAGE_MIN || + psp == POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT; +} + static enum power_supply_property axp20x_ac_power_properties[] = { POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_PRESENT, @@ -123,6 +191,14 @@ static enum power_supply_property axp22x_ac_power_properties[] = { POWER_SUPPLY_PROP_ONLINE, }; +static enum power_supply_property axp813_ac_power_properties[] = { + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_VOLTAGE_MIN, + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, +}; + static const struct power_supply_desc axp20x_ac_power_desc = { .name = "axp20x-ac", .type = POWER_SUPPLY_TYPE_MAINS, @@ -139,6 +215,16 @@ static const struct power_supply_desc axp22x_ac_power_desc = { .get_property = axp20x_ac_power_get_property, }; +static const struct power_supply_desc axp813_ac_power_desc = { + .name = "axp813-ac", + .type = POWER_SUPPLY_TYPE_MAINS, + .properties = axp813_ac_power_properties, + .num_properties = ARRAY_SIZE(axp813_ac_power_properties), + .property_is_writeable = axp813_ac_power_prop_writeable, + .get_property = axp20x_ac_power_get_property, + .set_property = axp813_ac_power_set_property, +}; + struct axp_data { const struct power_supply_desc *power_desc; bool acin_adc; @@ -154,6 +240,11 @@ static const struct axp_data axp22x_data = { .acin_adc = false, }; +static const struct axp_data axp813_data = { + .power_desc = &axp813_ac_power_desc, + .acin_adc = false, +}; + static int axp20x_ac_power_probe(struct platform_device *pdev) { struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); @@ -234,6 +325,9 @@ static const struct of_device_id axp20x_ac_power_match[] = { }, { .compatible = "x-powers,axp221-ac-power-supply", .data = &axp22x_data, + }, { + .compatible = "x-powers,axp813-ac-power-supply", + .data = &axp813_data, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, axp20x_ac_power_match); diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c @@ -10,6 +10,7 @@ * option) any later version. */ +#include <linux/bitops.h> #include <linux/device.h> #include <linux/init.h> #include <linux/interrupt.h> diff --git a/drivers/power/supply/axp288_charger.c b/drivers/power/supply/axp288_charger.c @@ -16,6 +16,7 @@ */ #include <linux/acpi.h> +#include <linux/bitops.h> #include <linux/module.h> #include <linux/device.h> #include <linux/regmap.h> @@ -29,17 +30,17 @@ #include <linux/mfd/axp20x.h> #include <linux/extcon.h> -#define PS_STAT_VBUS_TRIGGER (1 << 0) -#define PS_STAT_BAT_CHRG_DIR (1 << 2) -#define PS_STAT_VBAT_ABOVE_VHOLD (1 << 3) -#define PS_STAT_VBUS_VALID (1 << 4) -#define PS_STAT_VBUS_PRESENT (1 << 5) +#define PS_STAT_VBUS_TRIGGER BIT(0) +#define PS_STAT_BAT_CHRG_DIR BIT(2) +#define PS_STAT_VBAT_ABOVE_VHOLD BIT(3) +#define PS_STAT_VBUS_VALID BIT(4) +#define PS_STAT_VBUS_PRESENT BIT(5) -#define CHRG_STAT_BAT_SAFE_MODE (1 << 3) -#define CHRG_STAT_BAT_VALID (1 << 4) -#define CHRG_STAT_BAT_PRESENT (1 << 5) -#define CHRG_STAT_CHARGING (1 << 6) -#define CHRG_STAT_PMIC_OTP (1 << 7) +#define CHRG_STAT_BAT_SAFE_MODE BIT(3) +#define CHRG_STAT_BAT_VALID BIT(4) +#define CHRG_STAT_BAT_PRESENT BIT(5) +#define CHRG_STAT_CHARGING BIT(6) +#define CHRG_STAT_PMIC_OTP BIT(7) #define VBUS_ISPOUT_CUR_LIM_MASK 0x03 #define VBUS_ISPOUT_CUR_LIM_BIT_POS 0 @@ -52,33 +53,33 @@ #define VBUS_ISPOUT_VHOLD_SET_OFFSET 4000 /* 4000mV */ #define VBUS_ISPOUT_VHOLD_SET_LSB_RES 100 /* 100mV */ #define VBUS_ISPOUT_VHOLD_SET_4300MV 0x3 /* 4300mV */ -#define VBUS_ISPOUT_VBUS_PATH_DIS (1 << 7) +#define VBUS_ISPOUT_VBUS_PATH_DIS BIT(7) #define CHRG_CCCV_CC_MASK 0xf /* 4 bits */ #define CHRG_CCCV_CC_BIT_POS 0 #define CHRG_CCCV_CC_OFFSET 200 /* 200mA */ #define CHRG_CCCV_CC_LSB_RES 200 /* 200mA */ -#define CHRG_CCCV_ITERM_20P (1 << 4) /* 20% of CC */ +#define CHRG_CCCV_ITERM_20P BIT(4) /* 20% of CC */ #define CHRG_CCCV_CV_MASK 0x60 /* 2 bits */ #define CHRG_CCCV_CV_BIT_POS 5 #define CHRG_CCCV_CV_4100MV 0x0 /* 4.10V */ #define CHRG_CCCV_CV_4150MV 0x1 /* 4.15V */ #define CHRG_CCCV_CV_4200MV 0x2 /* 4.20V */ #define CHRG_CCCV_CV_4350MV 0x3 /* 4.35V */ -#define CHRG_CCCV_CHG_EN (1 << 7) +#define CHRG_CCCV_CHG_EN BIT(7) #define CNTL2_CC_TIMEOUT_MASK 0x3 /* 2 bits */ #define CNTL2_CC_TIMEOUT_OFFSET 6 /* 6 Hrs */ #define CNTL2_CC_TIMEOUT_LSB_RES 2 /* 2 Hrs */ #define CNTL2_CC_TIMEOUT_12HRS 0x3 /* 12 Hrs */ -#define CNTL2_CHGLED_TYPEB (1 << 4) -#define CNTL2_CHG_OUT_TURNON (1 << 5) +#define CNTL2_CHGLED_TYPEB BIT(4) +#define CNTL2_CHG_OUT_TURNON BIT(5) #define CNTL2_PC_TIMEOUT_MASK 0xC0 #define CNTL2_PC_TIMEOUT_OFFSET 40 /* 40 mins */ #define CNTL2_PC_TIMEOUT_LSB_RES 10 /* 10 mins */ #define CNTL2_PC_TIMEOUT_70MINS 0x3 -#define CHRG_ILIM_TEMP_LOOP_EN (1 << 3) +#define CHRG_ILIM_TEMP_LOOP_EN BIT(3) #define CHRG_VBUS_ILIM_MASK 0xf0 #define CHRG_VBUS_ILIM_BIT_POS 4 #define CHRG_VBUS_ILIM_100MA 0x0 /* 100mA */ @@ -94,7 +95,7 @@ #define CHRG_VLTFC_0C 0xA5 /* 0 DegC */ #define CHRG_VHTFC_45C 0x1F /* 45 DegC */ -#define FG_CNTL_OCV_ADJ_EN (1 << 3) +#define FG_CNTL_OCV_ADJ_EN BIT(3) #define CV_4100MV 4100 /* 4100mV */ #define CV_4150MV 4150 /* 4150mV */ diff --git a/drivers/power/supply/bq2415x_charger.c b/drivers/power/supply/bq2415x_charger.c @@ -1032,54 +1032,6 @@ static int bq2415x_power_supply_get_property(struct power_supply *psy, return 0; } -static int bq2415x_power_supply_init(struct bq2415x_device *bq) -{ - int ret; - int chip; - char revstr[8]; - struct power_supply_config psy_cfg = { - .drv_data = bq, - .of_node = bq->dev->of_node, - }; - - bq->charger_desc.name = bq->name; - bq->charger_desc.type = POWER_SUPPLY_TYPE_USB; - bq->charger_desc.properties = bq2415x_power_supply_props; - bq->charger_desc.num_properties = - ARRAY_SIZE(bq2415x_power_supply_props); - bq->charger_desc.get_property = bq2415x_power_supply_get_property; - - ret = bq2415x_detect_chip(bq); - if (ret < 0) - chip = BQUNKNOWN; - else - chip = ret; - - ret = bq2415x_detect_revision(bq); - if (ret < 0) - strcpy(revstr, "unknown"); - else - sprintf(revstr, "1.%d", ret); - - bq->model = kasprintf(GFP_KERNEL, - "chip %s, revision %s, vender code %.3d", - bq2415x_chip_name[chip], revstr, - bq2415x_get_vender_code(bq)); - if (!bq->model) { - dev_err(bq->dev, "failed to allocate model name\n"); - return -ENOMEM; - } - - bq->charger = power_supply_register(bq->dev, &bq->charger_desc, - &psy_cfg); - if (IS_ERR(bq->charger)) { - kfree(bq->model); - return PTR_ERR(bq->charger); - } - - return 0; -} - static void bq2415x_power_supply_exit(struct bq2415x_device *bq) { bq->autotimer = 0; @@ -1496,7 +1448,7 @@ static DEVICE_ATTR(charge_status, S_IRUGO, bq2415x_sysfs_show_status, NULL); static DEVICE_ATTR(boost_status, S_IRUGO, bq2415x_sysfs_show_status, NULL); static DEVICE_ATTR(fault_status, S_IRUGO, bq2415x_sysfs_show_status, NULL); -static struct attribute *bq2415x_sysfs_attributes[] = { +static struct attribute *bq2415x_sysfs_attrs[] = { /* * TODO: some (appropriate) of these attrs should be switched to * use power supply class props. @@ -1525,19 +1477,55 @@ static struct attribute *bq2415x_sysfs_attributes[] = { NULL, }; -static const struct attribute_group bq2415x_sysfs_attr_group = { - .attrs = bq2415x_sysfs_attributes, -}; +ATTRIBUTE_GROUPS(bq2415x_sysfs); -static int bq2415x_sysfs_init(struct bq2415x_device *bq) +static int bq2415x_power_supply_init(struct bq2415x_device *bq) { - return sysfs_create_group(&bq->charger->dev.kobj, - &bq2415x_sysfs_attr_group); -} + int ret; + int chip; + char revstr[8]; + struct power_supply_config psy_cfg = { + .drv_data = bq, + .of_node = bq->dev->of_node, + .attr_grp = bq2415x_sysfs_groups, + }; -static void bq2415x_sysfs_exit(struct bq2415x_device *bq) -{ - sysfs_remove_group(&bq->charger->dev.kobj, &bq2415x_sysfs_attr_group); + bq->charger_desc.name = bq->name; + bq->charger_desc.type = POWER_SUPPLY_TYPE_USB; + bq->charger_desc.properties = bq2415x_power_supply_props; + bq->charger_desc.num_properties = + ARRAY_SIZE(bq2415x_power_supply_props); + bq->charger_desc.get_property = bq2415x_power_supply_get_property; + + ret = bq2415x_detect_chip(bq); + if (ret < 0) + chip = BQUNKNOWN; + else + chip = ret; + + ret = bq2415x_detect_revision(bq); + if (ret < 0) + strcpy(revstr, "unknown"); + else + sprintf(revstr, "1.%d", ret); + + bq->model = kasprintf(GFP_KERNEL, + "chip %s, revision %s, vender code %.3d", + bq2415x_chip_name[chip], revstr, + bq2415x_get_vender_code(bq)); + if (!bq->model) { + dev_err(bq->dev, "failed to allocate model name\n"); + return -ENOMEM; + } + + bq->charger = power_supply_register(bq->dev, &bq->charger_desc, + &psy_cfg); + if (IS_ERR(bq->charger)) { + kfree(bq->model); + return PTR_ERR(bq->charger); + } + + return 0; } /* main bq2415x probe function */ @@ -1651,16 +1639,10 @@ static int bq2415x_probe(struct i2c_client *client, goto error_2; } - ret = bq2415x_sysfs_init(bq); - if (ret) { - dev_err(bq->dev, "failed to create sysfs entries: %d\n", ret); - goto error_3; - } - ret = bq2415x_set_defaults(bq); if (ret) { dev_err(bq->dev, "failed to set default values: %d\n", ret); - goto error_4; + goto error_3; } if (bq->notify_node || bq->init_data.notify_device) { @@ -1668,7 +1650,7 @@ static int bq2415x_probe(struct i2c_client *client, ret = power_supply_reg_notifier(&bq->nb); if (ret) { dev_err(bq->dev, "failed to reg notifier: %d\n", ret); - goto error_4; + goto error_3; } bq->automode = 1; @@ -1707,8 +1689,6 @@ static int bq2415x_probe(struct i2c_client *client, dev_info(bq->dev, "driver registered\n"); return 0; -error_4: - bq2415x_sysfs_exit(bq); error_3: bq2415x_power_supply_exit(bq); error_2: @@ -1733,7 +1713,6 @@ static int bq2415x_remove(struct i2c_client *client) power_supply_unreg_notifier(&bq->nb); of_node_put(bq->notify_node); - bq2415x_sysfs_exit(bq); bq2415x_power_supply_exit(bq); bq2415x_reset_chip(bq); diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c @@ -21,6 +21,7 @@ #include <linux/workqueue.h> #include <linux/gpio.h> #include <linux/i2c.h> +#include <linux/extcon-provider.h> #define BQ24190_MANUFACTURER "Texas Instruments" @@ -142,7 +143,7 @@ #define BQ24190_REG_VPRS_PN_MASK (BIT(5) | BIT(4) | BIT(3)) #define BQ24190_REG_VPRS_PN_SHIFT 3 #define BQ24190_REG_VPRS_PN_24190 0x4 -#define BQ24190_REG_VPRS_PN_24192 0x5 /* Also 24193 */ +#define BQ24190_REG_VPRS_PN_24192 0x5 /* Also 24193, 24196 */ #define BQ24190_REG_VPRS_PN_24192I 0x3 #define BQ24190_REG_VPRS_TS_PROFILE_MASK BIT(2) #define BQ24190_REG_VPRS_TS_PROFILE_SHIFT 2 @@ -159,6 +160,7 @@ struct bq24190_dev_info { struct i2c_client *client; struct device *dev; + struct extcon_dev *edev; struct power_supply *charger; struct power_supply *battery; struct delayed_work input_current_limit_work; @@ -174,6 +176,11 @@ struct bq24190_dev_info { u8 watchdog; }; +static const unsigned int bq24190_usb_extcon_cable[] = { + EXTCON_USB, + EXTCON_NONE, +}; + /* * The tables below provide a 2-way mapping for the value that goes in * the register field and the real-world value that it represents. @@ -402,9 +409,7 @@ static struct bq24190_sysfs_field_info bq24190_sysfs_field_tbl[] = { static struct attribute * bq24190_sysfs_attrs[ARRAY_SIZE(bq24190_sysfs_field_tbl) + 1]; -static const struct attribute_group bq24190_sysfs_attr_group = { - .attrs = bq24190_sysfs_attrs, -}; +ATTRIBUTE_GROUPS(bq24190_sysfs); static void bq24190_sysfs_init_attrs(void) { @@ -491,26 +496,6 @@ static ssize_t bq24190_sysfs_store(struct device *dev, return count; } - -static int bq24190_sysfs_create_group(struct bq24190_dev_info *bdi) -{ - bq24190_sysfs_init_attrs(); - - return sysfs_create_group(&bdi->charger->dev.kobj, - &bq24190_sysfs_attr_group); -} - -static void bq24190_sysfs_remove_group(struct bq24190_dev_info *bdi) -{ - sysfs_remove_group(&bdi->charger->dev.kobj, &bq24190_sysfs_attr_group); -} -#else -static int bq24190_sysfs_create_group(struct bq24190_dev_info *bdi) -{ - return 0; -} - -static inline void bq24190_sysfs_remove_group(struct bq24190_dev_info *bdi) {} #endif #ifdef CONFIG_REGULATOR @@ -577,6 +562,7 @@ static const struct regulator_ops bq24190_vbus_ops = { static const struct regulator_desc bq24190_vbus_desc = { .name = "usb_otg_vbus", + .of_match = "usb-otg-vbus", .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .ops = &bq24190_vbus_ops, @@ -1527,6 +1513,20 @@ static const struct power_supply_desc bq24190_battery_desc = { .property_is_writeable = bq24190_battery_property_is_writeable, }; +static int bq24190_configure_usb_otg(struct bq24190_dev_info *bdi, u8 ss_reg) +{ + bool otg_enabled; + int ret; + + otg_enabled = !!(ss_reg & BQ24190_REG_SS_VBUS_STAT_MASK); + ret = extcon_set_state_sync(bdi->edev, EXTCON_USB, otg_enabled); + if (ret < 0) + dev_err(bdi->dev, "Can't set extcon state to %d: %d\n", + otg_enabled, ret); + + return ret; +} + static void bq24190_check_status(struct bq24190_dev_info *bdi) { const u8 battery_mask_ss = BQ24190_REG_SS_CHRG_STAT_MASK; @@ -1596,8 +1596,10 @@ static void bq24190_check_status(struct bq24190_dev_info *bdi) bdi->ss_reg = ss_reg; } - if (alert_charger || alert_battery) + if (alert_charger || alert_battery) { power_supply_changed(bdi->charger); + bq24190_configure_usb_otg(bdi, ss_reg); + } if (alert_battery && bdi->battery) power_supply_changed(bdi->battery); @@ -1637,8 +1639,12 @@ static int bq24190_hw_init(struct bq24190_dev_info *bdi) if (ret < 0) return ret; - if (v != BQ24190_REG_VPRS_PN_24190 && - v != BQ24190_REG_VPRS_PN_24192I) { + switch (v) { + case BQ24190_REG_VPRS_PN_24190: + case BQ24190_REG_VPRS_PN_24192: + case BQ24190_REG_VPRS_PN_24192I: + break; + default: dev_err(bdi->dev, "Error unknown model: 0x%02x\n", v); return -ENODEV; } @@ -1727,6 +1733,14 @@ static int bq24190_probe(struct i2c_client *client, return -EINVAL; } + bdi->edev = devm_extcon_dev_allocate(dev, bq24190_usb_extcon_cable); + if (IS_ERR(bdi->edev)) + return PTR_ERR(bdi->edev); + + ret = devm_extcon_dev_register(dev, bdi->edev); + if (ret < 0) + return ret; + pm_runtime_enable(dev); pm_runtime_use_autosuspend(dev); pm_runtime_set_autosuspend_delay(dev, 600); @@ -1736,6 +1750,11 @@ static int bq24190_probe(struct i2c_client *client, goto out_pmrt; } +#ifdef CONFIG_SYSFS + bq24190_sysfs_init_attrs(); + charger_cfg.attr_grp = bq24190_sysfs_groups; +#endif + charger_cfg.drv_data = bdi; charger_cfg.of_node = dev->of_node; charger_cfg.supplied_to = bq24190_charger_supplied_to; @@ -1773,11 +1792,9 @@ static int bq24190_probe(struct i2c_client *client, goto out_charger; } - ret = bq24190_sysfs_create_group(bdi); - if (ret < 0) { - dev_err(dev, "Can't create sysfs entries\n"); + ret = bq24190_configure_usb_otg(bdi, bdi->ss_reg); + if (ret < 0) goto out_charger; - } bdi->initialized = true; @@ -1787,12 +1804,12 @@ static int bq24190_probe(struct i2c_client *client, "bq24190-charger", bdi); if (ret < 0) { dev_err(dev, "Can't set up irq handler\n"); - goto out_sysfs; + goto out_charger; } ret = bq24190_register_vbus_regulator(bdi); if (ret < 0) - goto out_sysfs; + goto out_charger; enable_irq_wake(client->irq); @@ -1801,9 +1818,6 @@ static int bq24190_probe(struct i2c_client *client, return 0; -out_sysfs: - bq24190_sysfs_remove_group(bdi); - out_charger: if (!IS_ERR_OR_NULL(bdi->battery)) power_supply_unregister(bdi->battery); @@ -1828,7 +1842,6 @@ static int bq24190_remove(struct i2c_client *client) } bq24190_register_reset(bdi); - bq24190_sysfs_remove_group(bdi); if (bdi->battery) power_supply_unregister(bdi->battery); power_supply_unregister(bdi->charger); @@ -1931,7 +1944,9 @@ static const struct dev_pm_ops bq24190_pm_ops = { static const struct i2c_device_id bq24190_i2c_ids[] = { { "bq24190" }, + { "bq24192" }, { "bq24192i" }, + { "bq24196" }, { }, }; MODULE_DEVICE_TABLE(i2c, bq24190_i2c_ids); @@ -1939,7 +1954,9 @@ MODULE_DEVICE_TABLE(i2c, bq24190_i2c_ids); #ifdef CONFIG_OF static const struct of_device_id bq24190_of_match[] = { { .compatible = "ti,bq24190", }, + { .compatible = "ti,bq24192", }, { .compatible = "ti,bq24192i", }, + { .compatible = "ti,bq24196", }, { }, }; MODULE_DEVICE_TABLE(of, bq24190_of_match); diff --git a/drivers/power/supply/bq24257_charger.c b/drivers/power/supply/bq24257_charger.c @@ -845,7 +845,7 @@ static DEVICE_ATTR(high_impedance_enable, S_IWUSR | S_IRUGO, static DEVICE_ATTR(sysoff_enable, S_IWUSR | S_IRUGO, bq24257_sysfs_show_enable, bq24257_sysfs_set_enable); -static struct attribute *bq24257_charger_attr[] = { +static struct attribute *bq24257_charger_sysfs_attrs[] = { &dev_attr_ovp_voltage.attr, &dev_attr_in_dpm_voltage.attr, &dev_attr_high_impedance_enable.attr, @@ -853,14 +853,13 @@ static struct attribute *bq24257_charger_attr[] = { NULL, }; -static const struct attribute_group bq24257_attr_group = { - .attrs = bq24257_charger_attr, -}; +ATTRIBUTE_GROUPS(bq24257_charger_sysfs); static int bq24257_power_supply_init(struct bq24257_device *bq) { struct power_supply_config psy_cfg = { .drv_data = bq, }; + psy_cfg.attr_grp = bq24257_charger_sysfs_groups; psy_cfg.supplied_to = bq24257_charger_supplied_to; psy_cfg.num_supplicants = ARRAY_SIZE(bq24257_charger_supplied_to); @@ -1084,12 +1083,6 @@ static int bq24257_probe(struct i2c_client *client, return ret; } - ret = sysfs_create_group(&bq->charger->dev.kobj, &bq24257_attr_group); - if (ret < 0) { - dev_err(dev, "Can't create sysfs entries\n"); - return ret; - } - return 0; } @@ -1100,8 +1093,6 @@ static int bq24257_remove(struct i2c_client *client) if (bq->iilimit_autoset_enable) cancel_delayed_work_sync(&bq->iilimit_setup_work); - sysfs_remove_group(&bq->charger->dev.kobj, &bq24257_attr_group); - bq24257_field_write(bq, F_RESET, 1); /* reset to defaults */ return 0; diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c @@ -183,7 +183,7 @@ static const struct reg_field bq25890_reg_fields[] = { [F_CHG_TMR] = REG_FIELD(0x07, 1, 2), [F_JEITA_ISET] = REG_FIELD(0x07, 0, 0), /* REG08 */ - [F_BATCMP] = REG_FIELD(0x08, 6, 7), // 5-7 on BQ25896 + [F_BATCMP] = REG_FIELD(0x08, 5, 7), [F_VCLAMP] = REG_FIELD(0x08, 2, 4), [F_TREG] = REG_FIELD(0x08, 0, 1), /* REG09 */ diff --git a/drivers/power/supply/charger-manager.c b/drivers/power/supply/charger-manager.c @@ -363,7 +363,7 @@ static int try_charger_enable(struct charger_manager *cm, bool enable) int err = 0, i; struct charger_desc *desc = cm->desc; - /* Ignore if it's redundent command */ + /* Ignore if it's redundant command */ if (enable == cm->charger_enabled) return 0; @@ -1212,7 +1212,6 @@ static int charger_extcon_init(struct charger_manager *cm, if (ret < 0) { pr_info("Cannot register extcon_dev for %s(cable: %s)\n", cable->extcon_name, cable->name); - ret = -EINVAL; } return ret; @@ -1352,7 +1351,7 @@ static ssize_t charger_externally_control_store(struct device *dev, } /** - * charger_manager_register_sysfs - Register sysfs entry for each charger + * charger_manager_prepare_sysfs - Prepare sysfs entry for each charger * @cm: the Charger Manager representing the battery. * * This function add sysfs entry for charger(regulator) to control charger from @@ -1364,34 +1363,30 @@ static ssize_t charger_externally_control_store(struct device *dev, * externally_control, this charger isn't controlled from charger-manager and * always stay off state of regulator. */ -static int charger_manager_register_sysfs(struct charger_manager *cm) +static int charger_manager_prepare_sysfs(struct charger_manager *cm) { struct charger_desc *desc = cm->desc; struct charger_regulator *charger; int chargers_externally_control = 1; - char buf[11]; - char *str; - int ret; + char *name; int i; /* Create sysfs entry to control charger(regulator) */ for (i = 0; i < desc->num_charger_regulators; i++) { charger = &desc->charger_regulators[i]; - snprintf(buf, 10, "charger.%d", i); - str = devm_kzalloc(cm->dev, - strlen(buf) + 1, GFP_KERNEL); - if (!str) + name = devm_kasprintf(cm->dev, GFP_KERNEL, "charger.%d", i); + if (!name) return -ENOMEM; - strcpy(str, buf); - charger->attrs[0] = &charger->attr_name.attr; charger->attrs[1] = &charger->attr_state.attr; charger->attrs[2] = &charger->attr_externally_control.attr; charger->attrs[3] = NULL; - charger->attr_g.name = str; - charger->attr_g.attrs = charger->attrs; + + charger->attr_grp.name = name; + charger->attr_grp.attrs = charger->attrs; + desc->sysfs_groups[i] = &charger->attr_grp; sysfs_attr_init(&charger->attr_name.attr); charger->attr_name.attr.name = "name"; @@ -1418,14 +1413,6 @@ static int charger_manager_register_sysfs(struct charger_manager *cm) dev_info(cm->dev, "'%s' regulator's externally_control is %d\n", charger->regulator_name, charger->externally_control); - - ret = sysfs_create_group(&cm->charger_psy->dev.kobj, - &charger->attr_g); - if (ret < 0) { - dev_err(cm->dev, "Cannot create sysfs entry of %s regulator\n", - charger->regulator_name); - return ret; - } } if (chargers_externally_control) { @@ -1521,19 +1508,19 @@ static struct charger_desc *of_cm_parse_desc(struct device *dev) /* chargers */ of_property_read_u32(np, "cm-num-chargers", &num_chgs); if (num_chgs) { + int i; + /* Allocate empty bin at the tail of array */ desc->psy_charger_stat = devm_kcalloc(dev, num_chgs + 1, sizeof(char *), GFP_KERNEL); - if (desc->psy_charger_stat) { - int i; - for (i = 0; i < num_chgs; i++) - of_property_read_string_index(np, "cm-chargers", - i, &desc->psy_charger_stat[i]); - } else { + if (!desc->psy_charger_stat) return ERR_PTR(-ENOMEM); - } + + for (i = 0; i < num_chgs; i++) + of_property_read_string_index(np, "cm-chargers", + i, &desc->psy_charger_stat[i]); } of_property_read_string(np, "cm-fuel-gauge", &desc->psy_fuel_gauge); @@ -1566,6 +1553,13 @@ static struct charger_desc *of_cm_parse_desc(struct device *dev) desc->charger_regulators = chg_regs; + desc->sysfs_groups = devm_kcalloc(dev, + desc->num_charger_regulators + 1, + sizeof(*desc->sysfs_groups), + GFP_KERNEL); + if (!desc->sysfs_groups) + return ERR_PTR(-ENOMEM); + for_each_child_of_node(np, child) { struct charger_cable *cables; struct device_node *_child; @@ -1633,7 +1627,7 @@ static int charger_manager_probe(struct platform_device *pdev) if (IS_ERR(desc)) { dev_err(&pdev->dev, "No platform data (desc) found\n"); - return -ENODEV; + return PTR_ERR(desc); } cm = devm_kzalloc(&pdev->dev, sizeof(*cm), GFP_KERNEL); @@ -1687,10 +1681,6 @@ static int charger_manager_probe(struct platform_device *pdev) return -EINVAL; } - /* Counting index only */ - while (desc->psy_charger_stat[i]) - i++; - /* Check if charger's supplies are present at probe */ for (i = 0; desc->psy_charger_stat[i]; i++) { struct power_supply *psy; @@ -1772,6 +1762,15 @@ static int charger_manager_probe(struct platform_device *pdev) INIT_DELAYED_WORK(&cm->fullbatt_vchk_work, fullbatt_vchk); + /* Register sysfs entry for charger(regulator) */ + ret = charger_manager_prepare_sysfs(cm); + if (ret < 0) { + dev_err(&pdev->dev, + "Cannot prepare sysfs entry of regulators\n"); + return ret; + } + psy_cfg.attr_grp = desc->sysfs_groups; + cm->charger_psy = power_supply_register(&pdev->dev, &cm->charger_psy_desc, &psy_cfg); @@ -1788,14 +1787,6 @@ static int charger_manager_probe(struct platform_device *pdev) goto err_reg_extcon; } - /* Register sysfs entry for charger(regulator) */ - ret = charger_manager_register_sysfs(cm); - if (ret < 0) { - dev_err(&pdev->dev, - "Cannot initialize sysfs entry of regulator\n"); - goto err_reg_sysfs; - } - /* Add to the list */ mutex_lock(&cm_list_mtx); list_add(&cm->entry, &cm_list); @@ -1803,7 +1794,7 @@ static int charger_manager_probe(struct platform_device *pdev) /* * Charger-manager is capable of waking up the systme from sleep - * when event is happend through cm_notify_event() + * when event is happened through cm_notify_event() */ device_init_wakeup(&pdev->dev, true); device_set_wakeup_capable(&pdev->dev, false); @@ -1819,14 +1810,6 @@ static int charger_manager_probe(struct platform_device *pdev) return 0; -err_reg_sysfs: - for (i = 0; i < desc->num_charger_regulators; i++) { - struct charger_regulator *charger; - - charger = &desc->charger_regulators[i]; - sysfs_remove_group(&cm->charger_psy->dev.kobj, - &charger->attr_g); - } err_reg_extcon: for (i = 0; i < desc->num_charger_regulators; i++) { struct charger_regulator *charger; @@ -2023,7 +2006,7 @@ module_exit(charger_manager_cleanup); * cm_notify_event - charger driver notify Charger Manager of charger event * @psy: pointer to instance of charger's power_supply * @type: type of charger event - * @msg: optional message passed to uevent_notify fuction + * @msg: optional message passed to uevent_notify function */ void cm_notify_event(struct power_supply *psy, enum cm_event_types type, char *msg) diff --git a/drivers/power/supply/cpcap-battery.c b/drivers/power/supply/cpcap-battery.c @@ -620,7 +620,7 @@ static int cpcap_battery_init_irq(struct platform_device *pdev, static int cpcap_battery_init_interrupts(struct platform_device *pdev, struct cpcap_battery_ddata *ddata) { - const char * const cpcap_battery_irqs[] = { + static const char * const cpcap_battery_irqs[] = { "eol", "lowbph", "lowbpl", "chrgcurr1", "battdetb" }; diff --git a/drivers/power/supply/cpcap-charger.c b/drivers/power/supply/cpcap-charger.c @@ -544,7 +544,7 @@ static void cpcap_charger_init_optional_gpios(struct cpcap_charger_ddata *ddata) if (IS_ERR(ddata->gpio[i])) { dev_info(ddata->dev, "no mode change GPIO%i: %li\n", i, PTR_ERR(ddata->gpio[i])); - ddata->gpio[i] = NULL; + ddata->gpio[i] = NULL; } } } diff --git a/drivers/power/supply/ds2780_battery.c b/drivers/power/supply/ds2780_battery.c @@ -658,7 +658,7 @@ static ssize_t ds2780_write_param_eeprom_bin(struct file *filp, return count; } -static const struct bin_attribute ds2780_param_eeprom_bin_attr = { +static struct bin_attribute ds2780_param_eeprom_bin_attr = { .attr = { .name = "param_eeprom", .mode = S_IRUGO | S_IWUSR, @@ -703,7 +703,7 @@ static ssize_t ds2780_write_user_eeprom_bin(struct file *filp, return count; } -static const struct bin_attribute ds2780_user_eeprom_bin_attr = { +static struct bin_attribute ds2780_user_eeprom_bin_attr = { .attr = { .name = "user_eeprom", .mode = S_IRUGO | S_IWUSR, @@ -722,8 +722,7 @@ static DEVICE_ATTR(rsgain_setting, S_IRUGO | S_IWUSR, ds2780_get_rsgain_setting, static DEVICE_ATTR(pio_pin, S_IRUGO | S_IWUSR, ds2780_get_pio_pin, ds2780_set_pio_pin); - -static struct attribute *ds2780_attributes[] = { +static struct attribute *ds2780_sysfs_attrs[] = { &dev_attr_pmod_enabled.attr, &dev_attr_sense_resistor_value.attr, &dev_attr_rsgain_setting.attr, @@ -731,21 +730,30 @@ static struct attribute *ds2780_attributes[] = { NULL }; -static const struct attribute_group ds2780_attr_group = { - .attrs = ds2780_attributes, +static struct bin_attribute *ds2780_sysfs_bin_attrs[] = { + &ds2780_param_eeprom_bin_attr, + &ds2780_user_eeprom_bin_attr, + NULL +}; + +static const struct attribute_group ds2780_sysfs_group = { + .attrs = ds2780_sysfs_attrs, + .bin_attrs = ds2780_sysfs_bin_attrs, +}; + +static const struct attribute_group *ds2780_sysfs_groups[] = { + &ds2780_sysfs_group, + NULL, }; static int ds2780_battery_probe(struct platform_device *pdev) { struct power_supply_config psy_cfg = {}; - int ret = 0; struct ds2780_device_info *dev_info; dev_info = devm_kzalloc(&pdev->dev, sizeof(*dev_info), GFP_KERNEL); - if (!dev_info) { - ret = -ENOMEM; - goto fail; - } + if (!dev_info) + return -ENOMEM; platform_set_drvdata(pdev, dev_info); @@ -758,62 +766,16 @@ static int ds2780_battery_probe(struct platform_device *pdev) dev_info->bat_desc.get_property = ds2780_battery_get_property; psy_cfg.drv_data = dev_info; + psy_cfg.attr_grp = ds2780_sysfs_groups; - dev_info->bat = power_supply_register(&pdev->dev, &dev_info->bat_desc, - &psy_cfg); + dev_info->bat = devm_power_supply_register(&pdev->dev, + &dev_info->bat_desc, + &psy_cfg); if (IS_ERR(dev_info->bat)) { dev_err(dev_info->dev, "failed to register battery\n"); - ret = PTR_ERR(dev_info->bat); - goto fail; - } - - ret = sysfs_create_group(&dev_info->bat->dev.kobj, &ds2780_attr_group); - if (ret) { - dev_err(dev_info->dev, "failed to create sysfs group\n"); - goto fail_unregister; + return PTR_ERR(dev_info->bat); } - ret = sysfs_create_bin_file(&dev_info->bat->dev.kobj, - &ds2780_param_eeprom_bin_attr); - if (ret) { - dev_err(dev_info->dev, - "failed to create param eeprom bin file"); - goto fail_remove_group; - } - - ret = sysfs_create_bin_file(&dev_info->bat->dev.kobj, - &ds2780_user_eeprom_bin_attr); - if (ret) { - dev_err(dev_info->dev, - "failed to create user eeprom bin file"); - goto fail_remove_bin_file; - } - - return 0; - -fail_remove_bin_file: - sysfs_remove_bin_file(&dev_info->bat->dev.kobj, - &ds2780_param_eeprom_bin_attr); -fail_remove_group: - sysfs_remove_group(&dev_info->bat->dev.kobj, &ds2780_attr_group); -fail_unregister: - power_supply_unregister(dev_info->bat); -fail: - return ret; -} - -static int ds2780_battery_remove(struct platform_device *pdev) -{ - struct ds2780_device_info *dev_info = platform_get_drvdata(pdev); - - /* - * Remove attributes before unregistering power supply - * because 'bat' will be freed on power_supply_unregister() call. - */ - sysfs_remove_group(&dev_info->bat->dev.kobj, &ds2780_attr_group); - - power_supply_unregister(dev_info->bat); - return 0; } @@ -822,7 +784,6 @@ static struct platform_driver ds2780_battery_driver = { .name = "ds2780-battery", }, .probe = ds2780_battery_probe, - .remove = ds2780_battery_remove, }; module_platform_driver(ds2780_battery_driver); diff --git a/drivers/power/supply/ds2781_battery.c b/drivers/power/supply/ds2781_battery.c @@ -660,7 +660,7 @@ static ssize_t ds2781_write_param_eeprom_bin(struct file *filp, return count; } -static const struct bin_attribute ds2781_param_eeprom_bin_attr = { +static struct bin_attribute ds2781_param_eeprom_bin_attr = { .attr = { .name = "param_eeprom", .mode = S_IRUGO | S_IWUSR, @@ -706,7 +706,7 @@ static ssize_t ds2781_write_user_eeprom_bin(struct file *filp, return count; } -static const struct bin_attribute ds2781_user_eeprom_bin_attr = { +static struct bin_attribute ds2781_user_eeprom_bin_attr = { .attr = { .name = "user_eeprom", .mode = S_IRUGO | S_IWUSR, @@ -725,8 +725,7 @@ static DEVICE_ATTR(rsgain_setting, S_IRUGO | S_IWUSR, ds2781_get_rsgain_setting, static DEVICE_ATTR(pio_pin, S_IRUGO | S_IWUSR, ds2781_get_pio_pin, ds2781_set_pio_pin); - -static struct attribute *ds2781_attributes[] = { +static struct attribute *ds2781_sysfs_attrs[] = { &dev_attr_pmod_enabled.attr, &dev_attr_sense_resistor_value.attr, &dev_attr_rsgain_setting.attr, @@ -734,14 +733,26 @@ static struct attribute *ds2781_attributes[] = { NULL }; -static const struct attribute_group ds2781_attr_group = { - .attrs = ds2781_attributes, +static struct bin_attribute *ds2781_sysfs_bin_attrs[] = { + &ds2781_param_eeprom_bin_attr, + &ds2781_user_eeprom_bin_attr, + NULL, +}; + +static const struct attribute_group ds2781_sysfs_group = { + .attrs = ds2781_sysfs_attrs, + .bin_attrs = ds2781_sysfs_bin_attrs, + +}; + +static const struct attribute_group *ds2781_sysfs_groups[] = { + &ds2781_sysfs_group, + NULL, }; static int ds2781_battery_probe(struct platform_device *pdev) { struct power_supply_config psy_cfg = {}; - int ret = 0; struct ds2781_device_info *dev_info; dev_info = devm_kzalloc(&pdev->dev, sizeof(*dev_info), GFP_KERNEL); @@ -759,63 +770,17 @@ static int ds2781_battery_probe(struct platform_device *pdev) dev_info->bat_desc.get_property = ds2781_battery_get_property; psy_cfg.drv_data = dev_info; + psy_cfg.attr_grp = ds2781_sysfs_groups; - dev_info->bat = power_supply_register(&pdev->dev, &dev_info->bat_desc, - &psy_cfg); + dev_info->bat = devm_power_supply_register(&pdev->dev, + &dev_info->bat_desc, + &psy_cfg); if (IS_ERR(dev_info->bat)) { dev_err(dev_info->dev, "failed to register battery\n"); - ret = PTR_ERR(dev_info->bat); - goto fail; - } - - ret = sysfs_create_group(&dev_info->bat->dev.kobj, &ds2781_attr_group); - if (ret) { - dev_err(dev_info->dev, "failed to create sysfs group\n"); - goto fail_unregister; - } - - ret = sysfs_create_bin_file(&dev_info->bat->dev.kobj, - &ds2781_param_eeprom_bin_attr); - if (ret) { - dev_err(dev_info->dev, - "failed to create param eeprom bin file"); - goto fail_remove_group; - } - - ret = sysfs_create_bin_file(&dev_info->bat->dev.kobj, - &ds2781_user_eeprom_bin_attr); - if (ret) { - dev_err(dev_info->dev, - "failed to create user eeprom bin file"); - goto fail_remove_bin_file; + return PTR_ERR(dev_info->bat); } return 0; - -fail_remove_bin_file: - sysfs_remove_bin_file(&dev_info->bat->dev.kobj, - &ds2781_param_eeprom_bin_attr); -fail_remove_group: - sysfs_remove_group(&dev_info->bat->dev.kobj, &ds2781_attr_group); -fail_unregister: - power_supply_unregister(dev_info->bat); -fail: - return ret; -} - -static int ds2781_battery_remove(struct platform_device *pdev) -{ - struct ds2781_device_info *dev_info = platform_get_drvdata(pdev); - - /* - * Remove attributes before unregistering power supply - * because 'bat' will be freed on power_supply_unregister() call. - */ - sysfs_remove_group(&dev_info->bat->dev.kobj, &ds2781_attr_group); - - power_supply_unregister(dev_info->bat); - - return 0; } static struct platform_driver ds2781_battery_driver = { @@ -823,7 +788,6 @@ static struct platform_driver ds2781_battery_driver = { .name = "ds2781-battery", }, .probe = ds2781_battery_probe, - .remove = ds2781_battery_remove, }; module_platform_driver(ds2781_battery_driver); diff --git a/drivers/power/supply/gpio-charger.c b/drivers/power/supply/gpio-charger.c @@ -82,11 +82,11 @@ static enum power_supply_type gpio_charger_get_type(struct device *dev) if (!strcmp("usb-sdp", chargetype)) return POWER_SUPPLY_TYPE_USB; if (!strcmp("usb-dcp", chargetype)) - return POWER_SUPPLY_TYPE_USB_DCP; + return POWER_SUPPLY_TYPE_USB; if (!strcmp("usb-cdp", chargetype)) - return POWER_SUPPLY_TYPE_USB_CDP; + return POWER_SUPPLY_TYPE_USB; if (!strcmp("usb-aca", chargetype)) - return POWER_SUPPLY_TYPE_USB_ACA; + return POWER_SUPPLY_TYPE_USB; } dev_warn(dev, "unknown charger type %s\n", chargetype); diff --git a/drivers/power/supply/lp8788-charger.c b/drivers/power/supply/lp8788-charger.c @@ -410,30 +410,6 @@ static const struct power_supply_desc lp8788_psy_battery_desc = { .get_property = lp8788_battery_get_property, }; -static int lp8788_psy_register(struct platform_device *pdev, - struct lp8788_charger *pchg) -{ - struct power_supply_config charger_cfg = {}; - - charger_cfg.supplied_to = battery_supplied_to; - charger_cfg.num_supplicants = ARRAY_SIZE(battery_supplied_to); - - pchg->charger = power_supply_register(&pdev->dev, - &lp8788_psy_charger_desc, - &charger_cfg); - if (IS_ERR(pchg->charger)) - return -EPERM; - - pchg->battery = power_supply_register(&pdev->dev, - &lp8788_psy_battery_desc, NULL); - if (IS_ERR(pchg->battery)) { - power_supply_unregister(pchg->charger); - return -EPERM; - } - - return 0; -} - static void lp8788_psy_unregister(struct lp8788_charger *pchg) { power_supply_unregister(pchg->battery); @@ -690,16 +666,39 @@ static DEVICE_ATTR(charger_status, S_IRUSR, lp8788_show_charger_status, NULL); static DEVICE_ATTR(eoc_time, S_IRUSR, lp8788_show_eoc_time, NULL); static DEVICE_ATTR(eoc_level, S_IRUSR, lp8788_show_eoc_level, NULL); -static struct attribute *lp8788_charger_attr[] = { +static struct attribute *lp8788_charger_sysfs_attrs[] = { &dev_attr_charger_status.attr, &dev_attr_eoc_time.attr, &dev_attr_eoc_level.attr, NULL, }; -static const struct attribute_group lp8788_attr_group = { - .attrs = lp8788_charger_attr, -}; +ATTRIBUTE_GROUPS(lp8788_charger_sysfs); + +static int lp8788_psy_register(struct platform_device *pdev, + struct lp8788_charger *pchg) +{ + struct power_supply_config charger_cfg = {}; + + charger_cfg.attr_grp = lp8788_charger_sysfs_groups; + charger_cfg.supplied_to = battery_supplied_to; + charger_cfg.num_supplicants = ARRAY_SIZE(battery_supplied_to); + + pchg->charger = power_supply_register(&pdev->dev, + &lp8788_psy_charger_desc, + &charger_cfg); + if (IS_ERR(pchg->charger)) + return -EPERM; + + pchg->battery = power_supply_register(&pdev->dev, + &lp8788_psy_battery_desc, NULL); + if (IS_ERR(pchg->battery)) { + power_supply_unregister(pchg->charger); + return -EPERM; + } + + return 0; +} static int lp8788_charger_probe(struct platform_device *pdev) { @@ -726,12 +725,6 @@ static int lp8788_charger_probe(struct platform_device *pdev) if (ret) return ret; - ret = sysfs_create_group(&pdev->dev.kobj, &lp8788_attr_group); - if (ret) { - lp8788_psy_unregister(pchg); - return ret; - } - ret = lp8788_irq_register(pdev, pchg); if (ret) dev_warn(dev, "failed to register charger irq: %d\n", ret); @@ -745,7 +738,6 @@ static int lp8788_charger_remove(struct platform_device *pdev) flush_work(&pchg->charger_work); lp8788_irq_unregister(pdev, pchg); - sysfs_remove_group(&pdev->dev.kobj, &lp8788_attr_group); lp8788_psy_unregister(pchg); lp8788_release_adc_channel(pchg); diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c @@ -428,14 +428,14 @@ static int olpc_bat_get_property(struct power_supply *psy, if (ret) return ret; - val->intval = (s16)be16_to_cpu(ec_word) * 100 / 256; + val->intval = (s16)be16_to_cpu(ec_word) * 10 / 256; break; case POWER_SUPPLY_PROP_TEMP_AMBIENT: ret = olpc_ec_cmd(EC_AMB_TEMP, NULL, 0, (void *)&ec_word, 2); if (ret) return ret; - val->intval = (int)be16_to_cpu(ec_word) * 100 / 256; + val->intval = (int)be16_to_cpu(ec_word) * 10 / 256; break; case POWER_SUPPLY_PROP_CHARGE_COUNTER: ret = olpc_ec_cmd(EC_BAT_ACR, NULL, 0, (void *)&ec_word, 2); diff --git a/drivers/power/supply/pcf50633-charger.c b/drivers/power/supply/pcf50633-charger.c @@ -245,17 +245,14 @@ static ssize_t set_chglim(struct device *dev, */ static DEVICE_ATTR(chg_curlim, S_IRUGO | S_IWUSR, show_chglim, set_chglim); -static struct attribute *pcf50633_mbc_sysfs_entries[] = { +static struct attribute *pcf50633_mbc_sysfs_attrs[] = { &dev_attr_chgmode.attr, &dev_attr_usb_curlim.attr, &dev_attr_chg_curlim.attr, NULL, }; -static const struct attribute_group mbc_attr_group = { - .name = NULL, /* put in device directory */ - .attrs = pcf50633_mbc_sysfs_entries, -}; +ATTRIBUTE_GROUPS(pcf50633_mbc_sysfs); static void pcf50633_mbc_irq_handler(int irq, void *data) @@ -390,6 +387,7 @@ static const struct power_supply_desc pcf50633_mbc_ac_desc = { static int pcf50633_mbc_probe(struct platform_device *pdev) { struct power_supply_config psy_cfg = {}; + struct power_supply_config usb_psy_cfg; struct pcf50633_mbc *mbc; int i; u8 mbcs1; @@ -419,8 +417,11 @@ static int pcf50633_mbc_probe(struct platform_device *pdev) return PTR_ERR(mbc->adapter); } + usb_psy_cfg = psy_cfg; + usb_psy_cfg.attr_grp = pcf50633_mbc_sysfs_groups; + mbc->usb = power_supply_register(&pdev->dev, &pcf50633_mbc_usb_desc, - &psy_cfg); + &usb_psy_cfg); if (IS_ERR(mbc->usb)) { dev_err(mbc->pcf->dev, "failed to register usb\n"); power_supply_unregister(mbc->adapter); @@ -436,9 +437,6 @@ static int pcf50633_mbc_probe(struct platform_device *pdev) return PTR_ERR(mbc->ac); } - if (sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group)) - dev_err(mbc->pcf->dev, "failed to create sysfs entries\n"); - mbcs1 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS1); if (mbcs1 & PCF50633_MBCS1_USBPRES) pcf50633_mbc_irq_handler(PCF50633_IRQ_USBINS, mbc); @@ -457,7 +455,6 @@ static int pcf50633_mbc_remove(struct platform_device *pdev) for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++) pcf50633_free_irq(mbc->pcf, mbc_irq_handlers[i]); - sysfs_remove_group(&pdev->dev.kobj, &mbc_attr_group); power_supply_unregister(mbc->usb); power_supply_unregister(mbc->adapter); power_supply_unregister(mbc->ac); diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c @@ -570,7 +570,7 @@ int power_supply_get_battery_info(struct power_supply *psy, { struct device_node *battery_np; const char *value; - int err; + int err, len, index; info->energy_full_design_uwh = -EINVAL; info->charge_full_design_uah = -EINVAL; @@ -579,6 +579,13 @@ int power_supply_get_battery_info(struct power_supply *psy, info->charge_term_current_ua = -EINVAL; info->constant_charge_current_max_ua = -EINVAL; info->constant_charge_voltage_max_uv = -EINVAL; + info->factory_internal_resistance_uohm = -EINVAL; + + for (index = 0; index < POWER_SUPPLY_OCV_TEMP_MAX; index++) { + info->ocv_table[index] = NULL; + info->ocv_temp[index] = -EINVAL; + info->ocv_table_size[index] = -EINVAL; + } if (!psy->of_node) { dev_warn(&psy->dev, "%s currently only supports devicetree\n", @@ -616,11 +623,142 @@ int power_supply_get_battery_info(struct power_supply *psy, &info->constant_charge_current_max_ua); of_property_read_u32(battery_np, "constant_charge_voltage_max_microvolt", &info->constant_charge_voltage_max_uv); + of_property_read_u32(battery_np, "factory-internal-resistance-micro-ohms", + &info->factory_internal_resistance_uohm); + + len = of_property_count_u32_elems(battery_np, "ocv-capacity-celsius"); + if (len < 0 && len != -EINVAL) { + return len; + } else if (len > POWER_SUPPLY_OCV_TEMP_MAX) { + dev_err(&psy->dev, "Too many temperature values\n"); + return -EINVAL; + } else if (len > 0) { + of_property_read_u32_array(battery_np, "ocv-capacity-celsius", + info->ocv_temp, len); + } + + for (index = 0; index < len; index++) { + struct power_supply_battery_ocv_table *table; + char *propname; + const __be32 *list; + int i, tab_len, size; + + propname = kasprintf(GFP_KERNEL, "ocv-capacity-table-%d", index); + list = of_get_property(battery_np, propname, &size); + if (!list || !size) { + dev_err(&psy->dev, "failed to get %s\n", propname); + kfree(propname); + power_supply_put_battery_info(psy, info); + return -EINVAL; + } + + kfree(propname); + tab_len = size / (2 * sizeof(__be32)); + info->ocv_table_size[index] = tab_len; + + table = info->ocv_table[index] = + devm_kcalloc(&psy->dev, tab_len, sizeof(*table), GFP_KERNEL); + if (!info->ocv_table[index]) { + power_supply_put_battery_info(psy, info); + return -ENOMEM; + } + + for (i = 0; i < tab_len; i++) { + table[i].ocv = be32_to_cpu(*list++); + table[i].capacity = be32_to_cpu(*list++); + } + } return 0; } EXPORT_SYMBOL_GPL(power_supply_get_battery_info); +void power_supply_put_battery_info(struct power_supply *psy, + struct power_supply_battery_info *info) +{ + int i; + + for (i = 0; i < POWER_SUPPLY_OCV_TEMP_MAX; i++) { + if (info->ocv_table[i]) + devm_kfree(&psy->dev, info->ocv_table[i]); + } +} +EXPORT_SYMBOL_GPL(power_supply_put_battery_info); + +/** + * power_supply_ocv2cap_simple() - find the battery capacity + * @table: Pointer to battery OCV lookup table + * @table_len: OCV table length + * @ocv: Current OCV value + * + * This helper function is used to look up battery capacity according to + * current OCV value from one OCV table, and the OCV table must be ordered + * descending. + * + * Return: the battery capacity. + */ +int power_supply_ocv2cap_simple(struct power_supply_battery_ocv_table *table, + int table_len, int ocv) +{ + int i, cap, tmp; + + for (i = 0; i < table_len; i++) + if (ocv > table[i].ocv) + break; + + if (i > 0 && i < table_len) { + tmp = (table[i - 1].capacity - table[i].capacity) * + (ocv - table[i].ocv); + tmp /= table[i - 1].ocv - table[i].ocv; + cap = tmp + table[i].capacity; + } else if (i == 0) { + cap = table[0].capacity; + } else { + cap = table[table_len - 1].capacity; + } + + return cap; +} +EXPORT_SYMBOL_GPL(power_supply_ocv2cap_simple); + +struct power_supply_battery_ocv_table * +power_supply_find_ocv2cap_table(struct power_supply_battery_info *info, + int temp, int *table_len) +{ + int best_temp_diff = INT_MAX, temp_diff; + u8 i, best_index = 0; + + if (!info->ocv_table[0]) + return NULL; + + for (i = 0; i < POWER_SUPPLY_OCV_TEMP_MAX; i++) { + temp_diff = abs(info->ocv_temp[i] - temp); + + if (temp_diff < best_temp_diff) { + best_temp_diff = temp_diff; + best_index = i; + } + } + + *table_len = info->ocv_table_size[best_index]; + return info->ocv_table[best_index]; +} +EXPORT_SYMBOL_GPL(power_supply_find_ocv2cap_table); + +int power_supply_batinfo_ocv2cap(struct power_supply_battery_info *info, + int ocv, int temp) +{ + struct power_supply_battery_ocv_table *table; + int table_len; + + table = power_supply_find_ocv2cap_table(info, temp, &table_len); + if (!table) + return -EINVAL; + + return power_supply_ocv2cap_simple(table, table_len, ocv); +} +EXPORT_SYMBOL_GPL(power_supply_batinfo_ocv2cap); + int power_supply_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) @@ -880,6 +1018,7 @@ __power_supply_register(struct device *parent, dev_set_drvdata(dev, psy); psy->desc = desc; if (cfg) { + dev->groups = cfg->attr_grp; psy->drv_data = cfg->drv_data; psy->of_node = cfg->fwnode ? to_of_node(cfg->fwnode) : cfg->of_node; diff --git a/drivers/power/supply/sc2731_charger.c b/drivers/power/supply/sc2731_charger.c @@ -57,9 +57,11 @@ struct sc2731_charger_info { struct usb_phy *usb_phy; struct notifier_block usb_notify; struct power_supply *psy_usb; + struct work_struct work; struct mutex lock; bool charging; u32 base; + u32 limit; }; static void sc2731_charger_stop_charge(struct sc2731_charger_info *info) @@ -318,22 +320,21 @@ static const struct power_supply_desc sc2731_charger_desc = { .property_is_writeable = sc2731_charger_property_is_writeable, }; -static int sc2731_charger_usb_change(struct notifier_block *nb, - unsigned long limit, void *data) +static void sc2731_charger_work(struct work_struct *data) { struct sc2731_charger_info *info = - container_of(nb, struct sc2731_charger_info, usb_notify); - int ret = 0; + container_of(data, struct sc2731_charger_info, work); + int ret; mutex_lock(&info->lock); - if (limit > 0) { + if (info->limit > 0 && !info->charging) { /* set current limitation and start to charge */ - ret = sc2731_charger_set_current_limit(info, limit); + ret = sc2731_charger_set_current_limit(info, info->limit); if (ret) goto out; - ret = sc2731_charger_set_current(info, limit); + ret = sc2731_charger_set_current(info, info->limit); if (ret) goto out; @@ -342,7 +343,7 @@ static int sc2731_charger_usb_change(struct notifier_block *nb, goto out; info->charging = true; - } else { + } else if (!info->limit && info->charging) { /* Stop charging */ info->charging = false; sc2731_charger_stop_charge(info); @@ -350,7 +351,19 @@ static int sc2731_charger_usb_change(struct notifier_block *nb, out: mutex_unlock(&info->lock); - return ret; +} + +static int sc2731_charger_usb_change(struct notifier_block *nb, + unsigned long limit, void *data) +{ + struct sc2731_charger_info *info = + container_of(nb, struct sc2731_charger_info, usb_notify); + + info->limit = limit; + + schedule_work(&info->work); + + return NOTIFY_OK; } static int sc2731_charger_hw_init(struct sc2731_charger_info *info) @@ -395,6 +408,8 @@ static int sc2731_charger_hw_init(struct sc2731_charger_info *info) vol_val = (term_voltage - 4200) / 100; else vol_val = 0; + + power_supply_put_battery_info(info->psy_usb, &bat_info); } /* Set charge termination current */ @@ -419,6 +434,24 @@ error: return ret; } +static void sc2731_charger_detect_status(struct sc2731_charger_info *info) +{ + unsigned int min, max; + + /* + * If the USB charger status has been USB_CHARGER_PRESENT before + * registering the notifier, we should start to charge with getting + * the charge current. + */ + if (info->usb_phy->chg_state != USB_CHARGER_PRESENT) + return; + + usb_phy_get_charger_current(info->usb_phy, &min, &max); + info->limit = min; + + schedule_work(&info->work); +} + static int sc2731_charger_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; @@ -432,6 +465,7 @@ static int sc2731_charger_probe(struct platform_device *pdev) mutex_init(&info->lock); info->dev = &pdev->dev; + INIT_WORK(&info->work, sc2731_charger_work); info->regmap = dev_get_regmap(pdev->dev.parent, NULL); if (!info->regmap) { @@ -472,6 +506,8 @@ static int sc2731_charger_probe(struct platform_device *pdev) return ret; } + sc2731_charger_detect_status(info); + return 0; } diff --git a/drivers/power/supply/sc27xx_fuel_gauge.c b/drivers/power/supply/sc27xx_fuel_gauge.c @@ -0,0 +1,1075 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Spreadtrum Communications Inc. + +#include <linux/gpio/consumer.h> +#include <linux/iio/consumer.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/nvmem-consumer.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/power_supply.h> +#include <linux/regmap.h> +#include <linux/slab.h> + +/* PMIC global control registers definition */ +#define SC27XX_MODULE_EN0 0xc08 +#define SC27XX_CLK_EN0 0xc18 +#define SC27XX_FGU_EN BIT(7) +#define SC27XX_FGU_RTC_EN BIT(6) + +/* FGU registers definition */ +#define SC27XX_FGU_START 0x0 +#define SC27XX_FGU_CONFIG 0x4 +#define SC27XX_FGU_ADC_CONFIG 0x8 +#define SC27XX_FGU_STATUS 0xc +#define SC27XX_FGU_INT_EN 0x10 +#define SC27XX_FGU_INT_CLR 0x14 +#define SC27XX_FGU_INT_STS 0x1c +#define SC27XX_FGU_VOLTAGE 0x20 +#define SC27XX_FGU_OCV 0x24 +#define SC27XX_FGU_POCV 0x28 +#define SC27XX_FGU_CURRENT 0x2c +#define SC27XX_FGU_LOW_OVERLOAD 0x34 +#define SC27XX_FGU_CLBCNT_SETH 0x50 +#define SC27XX_FGU_CLBCNT_SETL 0x54 +#define SC27XX_FGU_CLBCNT_DELTH 0x58 +#define SC27XX_FGU_CLBCNT_DELTL 0x5c +#define SC27XX_FGU_CLBCNT_VALH 0x68 +#define SC27XX_FGU_CLBCNT_VALL 0x6c +#define SC27XX_FGU_CLBCNT_QMAXL 0x74 +#define SC27XX_FGU_USER_AREA_SET 0xa0 +#define SC27XX_FGU_USER_AREA_CLEAR 0xa4 +#define SC27XX_FGU_USER_AREA_STATUS 0xa8 + +#define SC27XX_WRITE_SELCLB_EN BIT(0) +#define SC27XX_FGU_CLBCNT_MASK GENMASK(15, 0) +#define SC27XX_FGU_CLBCNT_SHIFT 16 +#define SC27XX_FGU_LOW_OVERLOAD_MASK GENMASK(12, 0) + +#define SC27XX_FGU_INT_MASK GENMASK(9, 0) +#define SC27XX_FGU_LOW_OVERLOAD_INT BIT(0) +#define SC27XX_FGU_CLBCNT_DELTA_INT BIT(2) + +#define SC27XX_FGU_MODE_AREA_MASK GENMASK(15, 12) +#define SC27XX_FGU_CAP_AREA_MASK GENMASK(11, 0) +#define SC27XX_FGU_MODE_AREA_SHIFT 12 + +#define SC27XX_FGU_FIRST_POWERTON GENMASK(3, 0) +#define SC27XX_FGU_DEFAULT_CAP GENMASK(11, 0) +#define SC27XX_FGU_NORMAIL_POWERTON 0x5 + +#define SC27XX_FGU_CUR_BASIC_ADC 8192 +#define SC27XX_FGU_SAMPLE_HZ 2 + +/* + * struct sc27xx_fgu_data: describe the FGU device + * @regmap: regmap for register access + * @dev: platform device + * @battery: battery power supply + * @base: the base offset for the controller + * @lock: protect the structure + * @gpiod: GPIO for battery detection + * @channel: IIO channel to get battery temperature + * @internal_resist: the battery internal resistance in mOhm + * @total_cap: the total capacity of the battery in mAh + * @init_cap: the initial capacity of the battery in mAh + * @alarm_cap: the alarm capacity + * @init_clbcnt: the initial coulomb counter + * @max_volt: the maximum constant input voltage in millivolt + * @min_volt: the minimum drained battery voltage in microvolt + * @table_len: the capacity table length + * @cur_1000ma_adc: ADC value corresponding to 1000 mA + * @vol_1000mv_adc: ADC value corresponding to 1000 mV + * @cap_table: capacity table with corresponding ocv + */ +struct sc27xx_fgu_data { + struct regmap *regmap; + struct device *dev; + struct power_supply *battery; + u32 base; + struct mutex lock; + struct gpio_desc *gpiod; + struct iio_channel *channel; + bool bat_present; + int internal_resist; + int total_cap; + int init_cap; + int alarm_cap; + int init_clbcnt; + int max_volt; + int min_volt; + int table_len; + int cur_1000ma_adc; + int vol_1000mv_adc; + struct power_supply_battery_ocv_table *cap_table; +}; + +static int sc27xx_fgu_cap_to_clbcnt(struct sc27xx_fgu_data *data, int capacity); + +static const char * const sc27xx_charger_supply_name[] = { + "sc2731_charger", + "sc2720_charger", + "sc2721_charger", + "sc2723_charger", +}; + +static int sc27xx_fgu_adc_to_current(struct sc27xx_fgu_data *data, int adc) +{ + return DIV_ROUND_CLOSEST(adc * 1000, data->cur_1000ma_adc); +} + +static int sc27xx_fgu_adc_to_voltage(struct sc27xx_fgu_data *data, int adc) +{ + return DIV_ROUND_CLOSEST(adc * 1000, data->vol_1000mv_adc); +} + +static int sc27xx_fgu_voltage_to_adc(struct sc27xx_fgu_data *data, int vol) +{ + return DIV_ROUND_CLOSEST(vol * data->vol_1000mv_adc, 1000); +} + +static bool sc27xx_fgu_is_first_poweron(struct sc27xx_fgu_data *data) +{ + int ret, status, cap, mode; + + ret = regmap_read(data->regmap, + data->base + SC27XX_FGU_USER_AREA_STATUS, &status); + if (ret) + return false; + + /* + * We use low 4 bits to save the last battery capacity and high 12 bits + * to save the system boot mode. + */ + mode = (status & SC27XX_FGU_MODE_AREA_MASK) >> SC27XX_FGU_MODE_AREA_SHIFT; + cap = status & SC27XX_FGU_CAP_AREA_MASK; + + /* + * When FGU has been powered down, the user area registers became + * default value (0xffff), which can be used to valid if the system is + * first power on or not. + */ + if (mode == SC27XX_FGU_FIRST_POWERTON || cap == SC27XX_FGU_DEFAULT_CAP) + return true; + + return false; +} + +static int sc27xx_fgu_save_boot_mode(struct sc27xx_fgu_data *data, + int boot_mode) +{ + int ret; + + ret = regmap_update_bits(data->regmap, + data->base + SC27XX_FGU_USER_AREA_CLEAR, + SC27XX_FGU_MODE_AREA_MASK, + SC27XX_FGU_MODE_AREA_MASK); + if (ret) + return ret; + + return regmap_update_bits(data->regmap, + data->base + SC27XX_FGU_USER_AREA_SET, + SC27XX_FGU_MODE_AREA_MASK, + boot_mode << SC27XX_FGU_MODE_AREA_SHIFT); +} + +static int sc27xx_fgu_save_last_cap(struct sc27xx_fgu_data *data, int cap) +{ + int ret; + + ret = regmap_update_bits(data->regmap, + data->base + SC27XX_FGU_USER_AREA_CLEAR, + SC27XX_FGU_CAP_AREA_MASK, + SC27XX_FGU_CAP_AREA_MASK); + if (ret) + return ret; + + return regmap_update_bits(data->regmap, + data->base + SC27XX_FGU_USER_AREA_SET, + SC27XX_FGU_CAP_AREA_MASK, cap); +} + +static int sc27xx_fgu_read_last_cap(struct sc27xx_fgu_data *data, int *cap) +{ + int ret, value; + + ret = regmap_read(data->regmap, + data->base + SC27XX_FGU_USER_AREA_STATUS, &value); + if (ret) + return ret; + + *cap = value & SC27XX_FGU_CAP_AREA_MASK; + return 0; +} + +/* + * When system boots on, we can not read battery capacity from coulomb + * registers, since now the coulomb registers are invalid. So we should + * calculate the battery open circuit voltage, and get current battery + * capacity according to the capacity table. + */ +static int sc27xx_fgu_get_boot_capacity(struct sc27xx_fgu_data *data, int *cap) +{ + int volt, cur, oci, ocv, ret; + bool is_first_poweron = sc27xx_fgu_is_first_poweron(data); + + /* + * If system is not the first power on, we should use the last saved + * battery capacity as the initial battery capacity. Otherwise we should + * re-calculate the initial battery capacity. + */ + if (!is_first_poweron) { + ret = sc27xx_fgu_read_last_cap(data, cap); + if (ret) + return ret; + + return sc27xx_fgu_save_boot_mode(data, SC27XX_FGU_NORMAIL_POWERTON); + } + + /* + * After system booting on, the SC27XX_FGU_CLBCNT_QMAXL register saved + * the first sampled open circuit current. + */ + ret = regmap_read(data->regmap, data->base + SC27XX_FGU_CLBCNT_QMAXL, + &cur); + if (ret) + return ret; + + cur <<= 1; + oci = sc27xx_fgu_adc_to_current(data, cur - SC27XX_FGU_CUR_BASIC_ADC); + + /* + * Should get the OCV from SC27XX_FGU_POCV register at the system + * beginning. It is ADC values reading from registers which need to + * convert the corresponding voltage. + */ + ret = regmap_read(data->regmap, data->base + SC27XX_FGU_POCV, &volt); + if (ret) + return ret; + + volt = sc27xx_fgu_adc_to_voltage(data, volt); + ocv = volt * 1000 - oci * data->internal_resist; + + /* + * Parse the capacity table to look up the correct capacity percent + * according to current battery's corresponding OCV values. + */ + *cap = power_supply_ocv2cap_simple(data->cap_table, data->table_len, + ocv); + + ret = sc27xx_fgu_save_last_cap(data, *cap); + if (ret) + return ret; + + return sc27xx_fgu_save_boot_mode(data, SC27XX_FGU_NORMAIL_POWERTON); +} + +static int sc27xx_fgu_set_clbcnt(struct sc27xx_fgu_data *data, int clbcnt) +{ + int ret; + + clbcnt *= SC27XX_FGU_SAMPLE_HZ; + + ret = regmap_update_bits(data->regmap, + data->base + SC27XX_FGU_CLBCNT_SETL, + SC27XX_FGU_CLBCNT_MASK, clbcnt); + if (ret) + return ret; + + ret = regmap_update_bits(data->regmap, + data->base + SC27XX_FGU_CLBCNT_SETH, + SC27XX_FGU_CLBCNT_MASK, + clbcnt >> SC27XX_FGU_CLBCNT_SHIFT); + if (ret) + return ret; + + return regmap_update_bits(data->regmap, data->base + SC27XX_FGU_START, + SC27XX_WRITE_SELCLB_EN, + SC27XX_WRITE_SELCLB_EN); +} + +static int sc27xx_fgu_get_clbcnt(struct sc27xx_fgu_data *data, int *clb_cnt) +{ + int ccl, cch, ret; + + ret = regmap_read(data->regmap, data->base + SC27XX_FGU_CLBCNT_VALL, + &ccl); + if (ret) + return ret; + + ret = regmap_read(data->regmap, data->base + SC27XX_FGU_CLBCNT_VALH, + &cch); + if (ret) + return ret; + + *clb_cnt = ccl & SC27XX_FGU_CLBCNT_MASK; + *clb_cnt |= (cch & SC27XX_FGU_CLBCNT_MASK) << SC27XX_FGU_CLBCNT_SHIFT; + *clb_cnt /= SC27XX_FGU_SAMPLE_HZ; + + return 0; +} + +static int sc27xx_fgu_get_capacity(struct sc27xx_fgu_data *data, int *cap) +{ + int ret, cur_clbcnt, delta_clbcnt, delta_cap, temp; + + /* Get current coulomb counters firstly */ + ret = sc27xx_fgu_get_clbcnt(data, &cur_clbcnt); + if (ret) + return ret; + + delta_clbcnt = cur_clbcnt - data->init_clbcnt; + + /* + * Convert coulomb counter to delta capacity (mAh), and set multiplier + * as 100 to improve the precision. + */ + temp = DIV_ROUND_CLOSEST(delta_clbcnt, 360); + temp = sc27xx_fgu_adc_to_current(data, temp); + + /* + * Convert to capacity percent of the battery total capacity, + * and multiplier is 100 too. + */ + delta_cap = DIV_ROUND_CLOSEST(temp * 100, data->total_cap); + *cap = delta_cap + data->init_cap; + + return 0; +} + +static int sc27xx_fgu_get_vbat_vol(struct sc27xx_fgu_data *data, int *val) +{ + int ret, vol; + + ret = regmap_read(data->regmap, data->base + SC27XX_FGU_VOLTAGE, &vol); + if (ret) + return ret; + + /* + * It is ADC values reading from registers which need to convert to + * corresponding voltage values. + */ + *val = sc27xx_fgu_adc_to_voltage(data, vol); + + return 0; +} + +static int sc27xx_fgu_get_current(struct sc27xx_fgu_data *data, int *val) +{ + int ret, cur; + + ret = regmap_read(data->regmap, data->base + SC27XX_FGU_CURRENT, &cur); + if (ret) + return ret; + + /* + * It is ADC values reading from registers which need to convert to + * corresponding current values. + */ + *val = sc27xx_fgu_adc_to_current(data, cur - SC27XX_FGU_CUR_BASIC_ADC); + + return 0; +} + +static int sc27xx_fgu_get_vbat_ocv(struct sc27xx_fgu_data *data, int *val) +{ + int vol, cur, ret; + + ret = sc27xx_fgu_get_vbat_vol(data, &vol); + if (ret) + return ret; + + ret = sc27xx_fgu_get_current(data, &cur); + if (ret) + return ret; + + /* Return the battery OCV in micro volts. */ + *val = vol * 1000 - cur * data->internal_resist; + + return 0; +} + +static int sc27xx_fgu_get_temp(struct sc27xx_fgu_data *data, int *temp) +{ + return iio_read_channel_processed(data->channel, temp); +} + +static int sc27xx_fgu_get_health(struct sc27xx_fgu_data *data, int *health) +{ + int ret, vol; + + ret = sc27xx_fgu_get_vbat_vol(data, &vol); + if (ret) + return ret; + + if (vol > data->max_volt) + *health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + else + *health = POWER_SUPPLY_HEALTH_GOOD; + + return 0; +} + +static int sc27xx_fgu_get_status(struct sc27xx_fgu_data *data, int *status) +{ + union power_supply_propval val; + struct power_supply *psy; + int i, ret = -EINVAL; + + for (i = 0; i < ARRAY_SIZE(sc27xx_charger_supply_name); i++) { + psy = power_supply_get_by_name(sc27xx_charger_supply_name[i]); + if (!psy) + continue; + + ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_STATUS, + &val); + power_supply_put(psy); + if (ret) + return ret; + + *status = val.intval; + } + + return ret; +} + +static int sc27xx_fgu_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct sc27xx_fgu_data *data = power_supply_get_drvdata(psy); + int ret = 0; + int value; + + mutex_lock(&data->lock); + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + ret = sc27xx_fgu_get_status(data, &value); + if (ret) + goto error; + + val->intval = value; + break; + + case POWER_SUPPLY_PROP_HEALTH: + ret = sc27xx_fgu_get_health(data, &value); + if (ret) + goto error; + + val->intval = value; + break; + + case POWER_SUPPLY_PROP_PRESENT: + val->intval = data->bat_present; + break; + + case POWER_SUPPLY_PROP_TEMP: + ret = sc27xx_fgu_get_temp(data, &value); + if (ret) + goto error; + + val->intval = value; + break; + + case POWER_SUPPLY_PROP_TECHNOLOGY: + val->intval = POWER_SUPPLY_TECHNOLOGY_LION; + break; + + case POWER_SUPPLY_PROP_CAPACITY: + ret = sc27xx_fgu_get_capacity(data, &value); + if (ret) + goto error; + + val->intval = value; + break; + + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + ret = sc27xx_fgu_get_vbat_vol(data, &value); + if (ret) + goto error; + + val->intval = value * 1000; + break; + + case POWER_SUPPLY_PROP_VOLTAGE_OCV: + ret = sc27xx_fgu_get_vbat_ocv(data, &value); + if (ret) + goto error; + + val->intval = value; + break; + + case POWER_SUPPLY_PROP_CURRENT_NOW: + case POWER_SUPPLY_PROP_CURRENT_AVG: + ret = sc27xx_fgu_get_current(data, &value); + if (ret) + goto error; + + val->intval = value * 1000; + break; + + default: + ret = -EINVAL; + break; + } + +error: + mutex_unlock(&data->lock); + return ret; +} + +static int sc27xx_fgu_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct sc27xx_fgu_data *data = power_supply_get_drvdata(psy); + int ret; + + if (psp != POWER_SUPPLY_PROP_CAPACITY) + return -EINVAL; + + mutex_lock(&data->lock); + + ret = sc27xx_fgu_save_last_cap(data, val->intval); + + mutex_unlock(&data->lock); + + if (ret < 0) + dev_err(data->dev, "failed to save battery capacity\n"); + + return ret; +} + +static void sc27xx_fgu_external_power_changed(struct power_supply *psy) +{ + struct sc27xx_fgu_data *data = power_supply_get_drvdata(psy); + + power_supply_changed(data->battery); +} + +static int sc27xx_fgu_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + return psp == POWER_SUPPLY_PROP_CAPACITY; +} + +static enum power_supply_property sc27xx_fgu_props[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_TEMP, + POWER_SUPPLY_PROP_TECHNOLOGY, + POWER_SUPPLY_PROP_CAPACITY, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_VOLTAGE_OCV, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CURRENT_AVG, +}; + +static const struct power_supply_desc sc27xx_fgu_desc = { + .name = "sc27xx-fgu", + .type = POWER_SUPPLY_TYPE_BATTERY, + .properties = sc27xx_fgu_props, + .num_properties = ARRAY_SIZE(sc27xx_fgu_props), + .get_property = sc27xx_fgu_get_property, + .set_property = sc27xx_fgu_set_property, + .external_power_changed = sc27xx_fgu_external_power_changed, + .property_is_writeable = sc27xx_fgu_property_is_writeable, +}; + +static void sc27xx_fgu_adjust_cap(struct sc27xx_fgu_data *data, int cap) +{ + data->init_cap = cap; + data->init_clbcnt = sc27xx_fgu_cap_to_clbcnt(data, data->init_cap); +} + +static irqreturn_t sc27xx_fgu_interrupt(int irq, void *dev_id) +{ + struct sc27xx_fgu_data *data = dev_id; + int ret, cap, ocv, adc; + u32 status; + + mutex_lock(&data->lock); + + ret = regmap_read(data->regmap, data->base + SC27XX_FGU_INT_STS, + &status); + if (ret) + goto out; + + ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_INT_CLR, + status, status); + if (ret) + goto out; + + /* + * When low overload voltage interrupt happens, we should calibrate the + * battery capacity in lower voltage stage. + */ + if (!(status & SC27XX_FGU_LOW_OVERLOAD_INT)) + goto out; + + ret = sc27xx_fgu_get_capacity(data, &cap); + if (ret) + goto out; + + ret = sc27xx_fgu_get_vbat_ocv(data, &ocv); + if (ret) + goto out; + + /* + * If current OCV value is less than the minimum OCV value in OCV table, + * which means now battery capacity is 0%, and we should adjust the + * inititial capacity to 0. + */ + if (ocv <= data->cap_table[data->table_len - 1].ocv) { + sc27xx_fgu_adjust_cap(data, 0); + } else if (ocv <= data->min_volt) { + /* + * If current OCV value is less than the low alarm voltage, but + * current capacity is larger than the alarm capacity, we should + * adjust the inititial capacity to alarm capacity. + */ + if (cap > data->alarm_cap) { + sc27xx_fgu_adjust_cap(data, data->alarm_cap); + } else if (cap <= 0) { + int cur_cap; + + /* + * If current capacity is equal with 0 or less than 0 + * (some error occurs), we should adjust inititial + * capacity to the capacity corresponding to current OCV + * value. + */ + cur_cap = power_supply_ocv2cap_simple(data->cap_table, + data->table_len, + ocv); + sc27xx_fgu_adjust_cap(data, cur_cap); + } + + /* + * After adjusting the battery capacity, we should set the + * lowest alarm voltage instead. + */ + data->min_volt = data->cap_table[data->table_len - 1].ocv; + adc = sc27xx_fgu_voltage_to_adc(data, data->min_volt / 1000); + regmap_update_bits(data->regmap, data->base + SC27XX_FGU_LOW_OVERLOAD, + SC27XX_FGU_LOW_OVERLOAD_MASK, adc); + } + +out: + mutex_unlock(&data->lock); + + power_supply_changed(data->battery); + return IRQ_HANDLED; +} + +static irqreturn_t sc27xx_fgu_bat_detection(int irq, void *dev_id) +{ + struct sc27xx_fgu_data *data = dev_id; + int state; + + mutex_lock(&data->lock); + + state = gpiod_get_value_cansleep(data->gpiod); + if (state < 0) { + dev_err(data->dev, "failed to get gpio state\n"); + mutex_unlock(&data->lock); + return IRQ_RETVAL(state); + } + + data->bat_present = !!state; + + mutex_unlock(&data->lock); + + power_supply_changed(data->battery); + return IRQ_HANDLED; +} + +static void sc27xx_fgu_disable(void *_data) +{ + struct sc27xx_fgu_data *data = _data; + + regmap_update_bits(data->regmap, SC27XX_CLK_EN0, SC27XX_FGU_RTC_EN, 0); + regmap_update_bits(data->regmap, SC27XX_MODULE_EN0, SC27XX_FGU_EN, 0); +} + +static int sc27xx_fgu_cap_to_clbcnt(struct sc27xx_fgu_data *data, int capacity) +{ + /* + * Get current capacity (mAh) = battery total capacity (mAh) * + * current capacity percent (capacity / 100). + */ + int cur_cap = DIV_ROUND_CLOSEST(data->total_cap * capacity, 100); + + /* + * Convert current capacity (mAh) to coulomb counter according to the + * formula: 1 mAh =3.6 coulomb. + */ + return DIV_ROUND_CLOSEST(cur_cap * 36, 10); +} + +static int sc27xx_fgu_calibration(struct sc27xx_fgu_data *data) +{ + struct nvmem_cell *cell; + int calib_data, cal_4200mv; + void *buf; + size_t len; + + cell = nvmem_cell_get(data->dev, "fgu_calib"); + if (IS_ERR(cell)) + return PTR_ERR(cell); + + buf = nvmem_cell_read(cell, &len); + nvmem_cell_put(cell); + + if (IS_ERR(buf)) + return PTR_ERR(buf); + + memcpy(&calib_data, buf, min(len, sizeof(u32))); + + /* + * Get the ADC value corresponding to 4200 mV from eFuse controller + * according to below formula. Then convert to ADC values corresponding + * to 1000 mV and 1000 mA. + */ + cal_4200mv = (calib_data & 0x1ff) + 6963 - 4096 - 256; + data->vol_1000mv_adc = DIV_ROUND_CLOSEST(cal_4200mv * 10, 42); + data->cur_1000ma_adc = data->vol_1000mv_adc * 4; + + kfree(buf); + return 0; +} + +static int sc27xx_fgu_hw_init(struct sc27xx_fgu_data *data) +{ + struct power_supply_battery_info info = { }; + struct power_supply_battery_ocv_table *table; + int ret, delta_clbcnt, alarm_adc; + + ret = power_supply_get_battery_info(data->battery, &info); + if (ret) { + dev_err(data->dev, "failed to get battery information\n"); + return ret; + } + + data->total_cap = info.charge_full_design_uah / 1000; + data->max_volt = info.constant_charge_voltage_max_uv / 1000; + data->internal_resist = info.factory_internal_resistance_uohm / 1000; + data->min_volt = info.voltage_min_design_uv; + + /* + * For SC27XX fuel gauge device, we only use one ocv-capacity + * table in normal temperature 20 Celsius. + */ + table = power_supply_find_ocv2cap_table(&info, 20, &data->table_len); + if (!table) + return -EINVAL; + + data->cap_table = devm_kmemdup(data->dev, table, + data->table_len * sizeof(*table), + GFP_KERNEL); + if (!data->cap_table) { + power_supply_put_battery_info(data->battery, &info); + return -ENOMEM; + } + + data->alarm_cap = power_supply_ocv2cap_simple(data->cap_table, + data->table_len, + data->min_volt); + + power_supply_put_battery_info(data->battery, &info); + + ret = sc27xx_fgu_calibration(data); + if (ret) + return ret; + + /* Enable the FGU module */ + ret = regmap_update_bits(data->regmap, SC27XX_MODULE_EN0, + SC27XX_FGU_EN, SC27XX_FGU_EN); + if (ret) { + dev_err(data->dev, "failed to enable fgu\n"); + return ret; + } + + /* Enable the FGU RTC clock to make it work */ + ret = regmap_update_bits(data->regmap, SC27XX_CLK_EN0, + SC27XX_FGU_RTC_EN, SC27XX_FGU_RTC_EN); + if (ret) { + dev_err(data->dev, "failed to enable fgu RTC clock\n"); + goto disable_fgu; + } + + ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_INT_CLR, + SC27XX_FGU_INT_MASK, SC27XX_FGU_INT_MASK); + if (ret) { + dev_err(data->dev, "failed to clear interrupt status\n"); + goto disable_clk; + } + + /* + * Set the voltage low overload threshold, which means when the battery + * voltage is lower than this threshold, the controller will generate + * one interrupt to notify. + */ + alarm_adc = sc27xx_fgu_voltage_to_adc(data, data->min_volt / 1000); + ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_LOW_OVERLOAD, + SC27XX_FGU_LOW_OVERLOAD_MASK, alarm_adc); + if (ret) { + dev_err(data->dev, "failed to set fgu low overload\n"); + goto disable_clk; + } + + /* + * Set the coulomb counter delta threshold, that means when the coulomb + * counter change is multiples of the delta threshold, the controller + * will generate one interrupt to notify the users to update the battery + * capacity. Now we set the delta threshold as a counter value of 1% + * capacity. + */ + delta_clbcnt = sc27xx_fgu_cap_to_clbcnt(data, 1); + + ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_CLBCNT_DELTL, + SC27XX_FGU_CLBCNT_MASK, delta_clbcnt); + if (ret) { + dev_err(data->dev, "failed to set low delta coulomb counter\n"); + goto disable_clk; + } + + ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_CLBCNT_DELTH, + SC27XX_FGU_CLBCNT_MASK, + delta_clbcnt >> SC27XX_FGU_CLBCNT_SHIFT); + if (ret) { + dev_err(data->dev, "failed to set high delta coulomb counter\n"); + goto disable_clk; + } + + /* + * Get the boot battery capacity when system powers on, which is used to + * initialize the coulomb counter. After that, we can read the coulomb + * counter to measure the battery capacity. + */ + ret = sc27xx_fgu_get_boot_capacity(data, &data->init_cap); + if (ret) { + dev_err(data->dev, "failed to get boot capacity\n"); + goto disable_clk; + } + + /* + * Convert battery capacity to the corresponding initial coulomb counter + * and set into coulomb counter registers. + */ + data->init_clbcnt = sc27xx_fgu_cap_to_clbcnt(data, data->init_cap); + ret = sc27xx_fgu_set_clbcnt(data, data->init_clbcnt); + if (ret) { + dev_err(data->dev, "failed to initialize coulomb counter\n"); + goto disable_clk; + } + + return 0; + +disable_clk: + regmap_update_bits(data->regmap, SC27XX_CLK_EN0, SC27XX_FGU_RTC_EN, 0); +disable_fgu: + regmap_update_bits(data->regmap, SC27XX_MODULE_EN0, SC27XX_FGU_EN, 0); + + return ret; +} + +static int sc27xx_fgu_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct power_supply_config fgu_cfg = { }; + struct sc27xx_fgu_data *data; + int ret, irq; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!data->regmap) { + dev_err(&pdev->dev, "failed to get regmap\n"); + return -ENODEV; + } + + ret = device_property_read_u32(&pdev->dev, "reg", &data->base); + if (ret) { + dev_err(&pdev->dev, "failed to get fgu address\n"); + return ret; + } + + data->channel = devm_iio_channel_get(&pdev->dev, "bat-temp"); + if (IS_ERR(data->channel)) { + dev_err(&pdev->dev, "failed to get IIO channel\n"); + return PTR_ERR(data->channel); + } + + data->gpiod = devm_gpiod_get(&pdev->dev, "bat-detect", GPIOD_IN); + if (IS_ERR(data->gpiod)) { + dev_err(&pdev->dev, "failed to get battery detection GPIO\n"); + return PTR_ERR(data->gpiod); + } + + ret = gpiod_get_value_cansleep(data->gpiod); + if (ret < 0) { + dev_err(&pdev->dev, "failed to get gpio state\n"); + return ret; + } + + data->bat_present = !!ret; + mutex_init(&data->lock); + data->dev = &pdev->dev; + platform_set_drvdata(pdev, data); + + fgu_cfg.drv_data = data; + fgu_cfg.of_node = np; + data->battery = devm_power_supply_register(&pdev->dev, &sc27xx_fgu_desc, + &fgu_cfg); + if (IS_ERR(data->battery)) { + dev_err(&pdev->dev, "failed to register power supply\n"); + return PTR_ERR(data->battery); + } + + ret = sc27xx_fgu_hw_init(data); + if (ret) { + dev_err(&pdev->dev, "failed to initialize fgu hardware\n"); + return ret; + } + + ret = devm_add_action(&pdev->dev, sc27xx_fgu_disable, data); + if (ret) { + sc27xx_fgu_disable(data); + dev_err(&pdev->dev, "failed to add fgu disable action\n"); + return ret; + } + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "no irq resource specified\n"); + return irq; + } + + ret = devm_request_threaded_irq(data->dev, irq, NULL, + sc27xx_fgu_interrupt, + IRQF_NO_SUSPEND | IRQF_ONESHOT, + pdev->name, data); + if (ret) { + dev_err(data->dev, "failed to request fgu IRQ\n"); + return ret; + } + + irq = gpiod_to_irq(data->gpiod); + if (irq < 0) { + dev_err(&pdev->dev, "failed to translate GPIO to IRQ\n"); + return irq; + } + + ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, + sc27xx_fgu_bat_detection, + IRQF_ONESHOT | IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING, + pdev->name, data); + if (ret) { + dev_err(&pdev->dev, "failed to request IRQ\n"); + return ret; + } + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int sc27xx_fgu_resume(struct device *dev) +{ + struct sc27xx_fgu_data *data = dev_get_drvdata(dev); + int ret; + + ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_INT_EN, + SC27XX_FGU_LOW_OVERLOAD_INT | + SC27XX_FGU_CLBCNT_DELTA_INT, 0); + if (ret) { + dev_err(data->dev, "failed to disable fgu interrupts\n"); + return ret; + } + + return 0; +} + +static int sc27xx_fgu_suspend(struct device *dev) +{ + struct sc27xx_fgu_data *data = dev_get_drvdata(dev); + int ret, status, ocv; + + ret = sc27xx_fgu_get_status(data, &status); + if (ret) + return ret; + + /* + * If we are charging, then no need to enable the FGU interrupts to + * adjust the battery capacity. + */ + if (status != POWER_SUPPLY_STATUS_NOT_CHARGING) + return 0; + + ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_INT_EN, + SC27XX_FGU_LOW_OVERLOAD_INT, + SC27XX_FGU_LOW_OVERLOAD_INT); + if (ret) { + dev_err(data->dev, "failed to enable low voltage interrupt\n"); + return ret; + } + + ret = sc27xx_fgu_get_vbat_ocv(data, &ocv); + if (ret) + goto disable_int; + + /* + * If current OCV is less than the minimum voltage, we should enable the + * coulomb counter threshold interrupt to notify events to adjust the + * battery capacity. + */ + if (ocv < data->min_volt) { + ret = regmap_update_bits(data->regmap, + data->base + SC27XX_FGU_INT_EN, + SC27XX_FGU_CLBCNT_DELTA_INT, + SC27XX_FGU_CLBCNT_DELTA_INT); + if (ret) { + dev_err(data->dev, + "failed to enable coulomb threshold int\n"); + goto disable_int; + } + } + + return 0; + +disable_int: + regmap_update_bits(data->regmap, data->base + SC27XX_FGU_INT_EN, + SC27XX_FGU_LOW_OVERLOAD_INT, 0); + return ret; +} +#endif + +static const struct dev_pm_ops sc27xx_fgu_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(sc27xx_fgu_suspend, sc27xx_fgu_resume) +}; + +static const struct of_device_id sc27xx_fgu_of_match[] = { + { .compatible = "sprd,sc2731-fgu", }, + { } +}; + +static struct platform_driver sc27xx_fgu_driver = { + .probe = sc27xx_fgu_probe, + .driver = { + .name = "sc27xx-fgu", + .of_match_table = sc27xx_fgu_of_match, + .pm = &sc27xx_fgu_pm_ops, + } +}; + +module_platform_driver(sc27xx_fgu_driver); + +MODULE_DESCRIPTION("Spreadtrum SC27XX PMICs Fual Gauge Unit Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h @@ -266,6 +266,7 @@ enum axp20x_variants { #define AXP288_RT_BATT_V_H 0xa0 #define AXP288_RT_BATT_V_L 0xa1 +#define AXP813_ACIN_PATH_CTRL 0x3a #define AXP813_ADC_RATE 0x85 /* Fuel Gauge */ diff --git a/include/linux/power/charger-manager.h b/include/linux/power/charger-manager.h @@ -119,7 +119,7 @@ struct charger_regulator { struct charger_cable *cables; int num_cables; - struct attribute_group attr_g; + struct attribute_group attr_grp; struct device_attribute attr_name; struct device_attribute attr_state; struct device_attribute attr_externally_control; @@ -186,6 +186,7 @@ struct charger_desc { int num_charger_regulators; struct charger_regulator *charger_regulators; + const struct attribute_group **sysfs_groups; const char *psy_fuel_gauge; diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h @@ -204,6 +204,9 @@ struct power_supply_config { /* Driver private data */ void *drv_data; + /* Device specific sysfs attributes */ + const struct attribute_group **attr_grp; + char **supplied_to; size_t num_supplicants; }; @@ -309,6 +312,13 @@ struct power_supply_info { int use_for_apm; }; +struct power_supply_battery_ocv_table { + int ocv; /* microVolts */ + int capacity; /* percent */ +}; + +#define POWER_SUPPLY_OCV_TEMP_MAX 20 + /* * This is the recommended struct to manage static battery parameters, * populated by power_supply_get_battery_info(). Most platform drivers should @@ -326,6 +336,10 @@ struct power_supply_battery_info { int charge_term_current_ua; /* microAmps */ int constant_charge_current_max_ua; /* microAmps */ int constant_charge_voltage_max_uv; /* microVolts */ + int factory_internal_resistance_uohm; /* microOhms */ + int ocv_temp[POWER_SUPPLY_OCV_TEMP_MAX];/* celsius */ + struct power_supply_battery_ocv_table *ocv_table[POWER_SUPPLY_OCV_TEMP_MAX]; + int ocv_table_size[POWER_SUPPLY_OCV_TEMP_MAX]; }; extern struct atomic_notifier_head power_supply_notifier; @@ -349,6 +363,15 @@ devm_power_supply_get_by_phandle(struct device *dev, const char *property) extern int power_supply_get_battery_info(struct power_supply *psy, struct power_supply_battery_info *info); +extern void power_supply_put_battery_info(struct power_supply *psy, + struct power_supply_battery_info *info); +extern int power_supply_ocv2cap_simple(struct power_supply_battery_ocv_table *table, + int table_len, int ocv); +extern struct power_supply_battery_ocv_table * +power_supply_find_ocv2cap_table(struct power_supply_battery_info *info, + int temp, int *table_len); +extern int power_supply_batinfo_ocv2cap(struct power_supply_battery_info *info, + int ocv, int temp); extern void power_supply_changed(struct power_supply *psy); extern int power_supply_am_i_supplied(struct power_supply *psy); extern int power_supply_set_input_current_limit_from_supplier(