diff options
42 files changed, 4331 insertions, 559 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-power-ltc4162l b/Documentation/ABI/testing/sysfs-class-power-ltc4162l new file mode 100644 index 000000000000..ba30db93052b --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-power-ltc4162l @@ -0,0 +1,82 @@ +What: /sys/class/power_supply/ltc4162-l/charge_status +Date: Januari 2021 +KernelVersion: 5.11 +Description: + Detailed charge status information as reported by the chip. + + Access: Read + + Valid values: + ilim_reg_active + thermal_reg_active + vin_uvcl_active + iin_limit_active + constant_current + constant_voltage + charger_off + +What: /sys/class/power_supply/ltc4162-l/ibat +Date: Januari 2021 +KernelVersion: 5.11 +Description: + Battery input current as measured by the charger. Negative value + means that the battery is discharging. + + Access: Read + + Valid values: Signed value in microamps + +What: /sys/class/power_supply/ltc4162-l/vbat +Date: Januari 2021 +KernelVersion: 5.11 +Description: + Battery voltage as measured by the charger. + + Access: Read + + Valid values: In microvolts + +What: /sys/class/power_supply/ltc4162-l/vbat_avg +Date: Januari 2021 +KernelVersion: 5.11 +Description: + Battery voltage, averaged over time, as measured by the charger. + + Access: Read + + Valid values: In microvolts + +What: /sys/class/power_supply/ltc4162-l/force_telemetry +Date: Januari 2021 +KernelVersion: 5.11 +Description: + To save battery current, the measurement system is disabled if + the battery is the only source of power. This affects all + voltage, current and temperature measurements. + Write a "1" to this to keep performing telemetry once every few + seconds, even when running on battery (as reported by the online + property, which is "1" when external power is available and "0" + when the system runs on battery). + + Access: Read, Write + + Valid values: 0 (disabled) or 1 (enabled) + +What: /sys/class/power_supply/ltc4162-l/arm_ship_mode +Date: Januari 2021 +KernelVersion: 5.11 +Description: + The charger will normally drain the battery while inactive, + typically drawing about 54 microamps. Write a "1" to this + property to arm a special "ship" mode that extends shelf life + by reducing the leakage to about 2.8 microamps. The chip will + remain in this mode (and no longer respond to I2C commands) + until some external power-supply is attached raising the input + voltage above 1V. It will then automatically revert to "0". + Writing a "0" to the property cancels the "ship" mode request. + The ship mode, when armed, activates once the input voltage + drops below 1V. + + Access: Read, Write + + Valid values: 0 (disable) or 1 (enable) diff --git a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt index 67719f15eb4c..807264a78edc 100644 --- a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt +++ b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt @@ -91,7 +91,8 @@ SHDWC SAMA5D2-Compatible Shutdown Controller 1) shdwc node required properties: -- compatible: should be "atmel,sama5d2-shdwc" or "microchip,sam9x60-shdwc". +- compatible: should be "atmel,sama5d2-shdwc", "microchip,sam9x60-shdwc" or + "microchip,sama7g5-shdwc" - reg: should contain registers location and length - clocks: phandle to input clock. - #address-cells: should be one. The cell is the wake-up input index. @@ -103,7 +104,7 @@ optional properties: microseconds. It's usually a board-related property. - atmel,wakeup-rtc-timer: boolean to enable Real-Time Clock wake-up. -optional microchip,sam9x60-shdwc properties: +optional microchip,sam9x60-shdwc or microchip,sama7g5-shdwc properties: - atmel,wakeup-rtt-timer: boolean to enable Real-time Timer Wake-up. The node contains child nodes for each wake-up input that the platform uses. diff --git a/Documentation/devicetree/bindings/power/supply/bq256xx.yaml b/Documentation/devicetree/bindings/power/supply/bq256xx.yaml new file mode 100644 index 000000000000..18b54783e11a --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/bq256xx.yaml @@ -0,0 +1,110 @@ +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause) +# Copyright (C) 2020 Texas Instruments Incorporated +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/power/supply/bq256xx.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: TI bq256xx Switch Mode Buck Charger + +maintainers: + - Ricardo Rivera-Matos <r-rivera-matos@ti.com> + +description: | + The bq256xx devices are a family of highly-integrated battery charge + management and system power management ICs for single cell Li-ion and Li- + polymer batteries. + + Datasheets: + - https://www.ti.com/lit/ds/symlink/bq25600.pdf + - https://www.ti.com/lit/ds/symlink/bq25601.pdf + - https://www.ti.com/lit/ds/symlink/bq25600d.pdf + - https://www.ti.com/lit/ds/symlink/bq25601d.pdf + - https://www.ti.com/lit/ds/symlink/bq25611d.pdf + - https://www.ti.com/lit/ds/symlink/bq25618.pdf + - https://www.ti.com/lit/ds/symlink/bq25619.pdf + +properties: + compatible: + enum: + - ti,bq25600 + - ti,bq25601 + - ti,bq25600d + - ti,bq25601d + - ti,bq25611d + - ti,bq25618 + - ti,bq25619 + + reg: + maxItems: 1 + + ti,watchdog-timeout-ms: + $ref: /schemas/types.yaml#/definitions/uint32 + default: 0 + description: | + Watchdog timer in ms. 0 (default) disables the watchdog + minimum: 0 + maximum: 160000 + enum: [ 0, 40000, 80000, 160000] + + input-voltage-limit-microvolt: + description: | + Minimum input voltage limit in µV with a 100000 µV step + minimum: 3900000 + maximum: 5400000 + + input-current-limit-microamp: + description: | + Maximum input current limit in µA with a 100000 µA step + minimum: 100000 + maximum: 3200000 + + monitored-battery: + $ref: /schemas/types.yaml#/definitions/phandle + description: phandle to the battery node being monitored + + interrupts: + maxItems: 1 + description: | + Interrupt sends an active low, 256 μs pulse to host to report the charger + device status and faults. + +required: + - compatible + - reg + - monitored-battery + +additionalProperties: false + +examples: + - | + bat: battery { + compatible = "simple-battery"; + constant-charge-current-max-microamp = <2040000>; + constant-charge-voltage-max-microvolt = <4352000>; + precharge-current-microamp = <180000>; + charge-term-current-microamp = <180000>; + }; + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + i2c { + + clock-frequency = <400000>; + + #address-cells = <1>; + #size-cells = <0>; + + charger@6b { + compatible = "ti,bq25601"; + reg = <0x6b>; + monitored-battery = <&bat>; + + interrupt-parent = <&gpio1>; + interrupts = <16 IRQ_TYPE_EDGE_FALLING>; + ti,watchdog-timeout-ms = <40000>; + + input-voltage-limit-microvolt = <4500000>; + input-current-limit-microamp = <2400000>; + }; + }; +... diff --git a/Documentation/devicetree/bindings/power/supply/ltc4162-l.yaml b/Documentation/devicetree/bindings/power/supply/ltc4162-l.yaml new file mode 100644 index 000000000000..1f88c9e013f4 --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/ltc4162-l.yaml @@ -0,0 +1,69 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright (C) 2020 Topic Embedded Products +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/power/supply/ltc4162-l.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: Linear Technology (Analog Devices) LTC4162-L Charger + +maintainers: + - Mike Looijmans <mike.looijmans@topic.nl> + +description: | + The LTC ® 4162-L is an advanced monolithic synchronous step-down switching + battery charger and PowerPath (TM) manager that seamlessly manages power + distribution between input sources such as wall adapters, backplanes, solar + panels, etc., and a rechargeable Lithium-Ion/Polymer battery. + + Specifications about the charger can be found at: + https://www.analog.com/en/products/ltc4162-s.html + +properties: + compatible: + enum: + - lltc,ltc4162-l + + reg: + maxItems: 1 + description: I2C address of the charger. + + lltc,rsnsb-micro-ohms: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Battery sense resistor in microohm. + minimum: 1000 + + lltc,rsnsi-micro-ohms: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Input current sense resistor in microohm. + minimum: 1000 + + lltc,cell-count: + $ref: /schemas/types.yaml#/definitions/uint32 + description: | + Number of battery cells. If not provided, will be obtained from the chip + once the external power is applied. Omit this when the number of cells + is somewhat dynamic. Without it, several measurements will return 0 until + the charger is connected to an external supply. + +required: + - compatible + - reg + - lltc,rsnsb-micro-ohms + - lltc,rsnsi-micro-ohms + +additionalProperties: false + +examples: + - | + i2c0 { + #address-cells = <1>; + #size-cells = <0>; + charger: battery-charger@68 { + compatible = "lltc,ltc4162-l"; + reg = <0x68>; + lltc,rsnsb-micro-ohms = <10000>; + lltc,rsnsi-micro-ohms = <16000>; + lltc,cell-count = <2>; + }; + }; diff --git a/arch/arm/mach-pxa/mioa701.c b/arch/arm/mach-pxa/mioa701.c index d3af80317f2d..a79f296e81e0 100644 --- a/arch/arm/mach-pxa/mioa701.c +++ b/arch/arm/mach-pxa/mioa701.c @@ -577,7 +577,6 @@ static struct platform_device power_dev = { static struct wm97xx_batt_pdata mioa701_battery_data = { .batt_aux = WM97XX_AUX_ID1, .temp_aux = -1, - .charge_gpio = -1, .min_voltage = 0xc00, .max_voltage = 0xfc0, .batt_tech = POWER_SUPPLY_TECHNOLOGY_LION, diff --git a/arch/arm/mach-pxa/palm27x.c b/arch/arm/mach-pxa/palm27x.c index 0d246a1aebbc..6230381a7ca0 100644 --- a/arch/arm/mach-pxa/palm27x.c +++ b/arch/arm/mach-pxa/palm27x.c @@ -212,7 +212,6 @@ void __init palm27x_irda_init(int pwdn) static struct wm97xx_batt_pdata palm27x_batt_pdata = { .batt_aux = WM97XX_AUX_ID3, .temp_aux = WM97XX_AUX_ID2, - .charge_gpio = -1, .batt_mult = 1000, .batt_div = 414, .temp_mult = 1, diff --git a/arch/arm/mach-pxa/palmte2.c b/arch/arm/mach-pxa/palmte2.c index e3bcf58b4e63..a2b10db4aacc 100644 --- a/arch/arm/mach-pxa/palmte2.c +++ b/arch/arm/mach-pxa/palmte2.c @@ -273,7 +273,6 @@ static struct platform_device power_supply = { static struct wm97xx_batt_pdata palmte2_batt_pdata = { .batt_aux = WM97XX_AUX_ID3, .temp_aux = WM97XX_AUX_ID2, - .charge_gpio = -1, .max_voltage = PALMTE2_BAT_MAX_VOLTAGE, .min_voltage = PALMTE2_BAT_MIN_VOLTAGE, .batt_mult = 1000, diff --git a/arch/arm/mach-pxa/z2.c b/arch/arm/mach-pxa/z2.c index 89eb5243c85f..8e74fbb0a96e 100644 --- a/arch/arm/mach-pxa/z2.c +++ b/arch/arm/mach-pxa/z2.c @@ -487,7 +487,6 @@ static struct z2_battery_info batt_chip_info = { .batt_I2C_bus = 0, .batt_I2C_addr = 0x55, .batt_I2C_reg = 2, - .charge_gpio = GPIO0_ZIPITZ2_AC_DETECT, .min_voltage = 3475000, .max_voltage = 4190000, .batt_div = 59, @@ -496,9 +495,19 @@ static struct z2_battery_info batt_chip_info = { .batt_name = "Z2", }; +static struct gpiod_lookup_table z2_battery_gpio_table = { + .dev_id = "aer915", + .table = { + GPIO_LOOKUP("gpio-pxa", GPIO0_ZIPITZ2_AC_DETECT, + NULL, GPIO_ACTIVE_HIGH), + { }, + }, +}; + static struct i2c_board_info __initdata z2_i2c_board_info[] = { { I2C_BOARD_INFO("aer915", 0x55), + .dev_name = "aer915", .platform_data = &batt_chip_info, }, { I2C_BOARD_INFO("wm8750", 0x1b), @@ -509,6 +518,7 @@ static struct i2c_board_info __initdata z2_i2c_board_info[] = { static void __init z2_i2c_init(void) { pxa_set_i2c_info(NULL); + gpiod_add_lookup_table(&z2_battery_gpio_table); i2c_register_board_info(0, ARRAY_AND_SIZE(z2_i2c_board_info)); } #else diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig index b22c4fdb2561..4d1192062508 100644 --- a/drivers/power/reset/Kconfig +++ b/drivers/power/reset/Kconfig @@ -39,6 +39,13 @@ config POWER_RESET_AT91_SAMA5D2_SHDWC This driver supports the alternate shutdown controller for some Atmel SAMA5 SoCs. It is present for example on SAMA5D2 SoC. +config POWER_RESET_ATC260X + tristate "Actions Semi ATC260x PMIC power-off driver" + depends on MFD_ATC260X + help + This driver provides power-off and restart support for a system + through Actions Semi ATC260x series PMICs. + config POWER_RESET_AXXIA bool "LSI Axxia reset driver" depends on ARCH_AXXIA @@ -251,13 +258,6 @@ config POWER_RESET_RMOBILE help Reboot support for Renesas R-Mobile and SH-Mobile SoCs. -config POWER_RESET_ZX - tristate "ZTE SoCs reset driver" - depends on ARCH_ZX || COMPILE_TEST - depends on HAS_IOMEM - help - Reboot support for ZTE SoCs. - config REBOOT_MODE tristate @@ -292,4 +292,3 @@ config NVMEM_REBOOT_MODE action according to the mode. endif - diff --git a/drivers/power/reset/Makefile b/drivers/power/reset/Makefile index 9dc49d3a57ff..4f959b697606 100644 --- a/drivers/power/reset/Makefile +++ b/drivers/power/reset/Makefile @@ -3,6 +3,7 @@ obj-$(CONFIG_POWER_RESET_AS3722) += as3722-poweroff.o obj-$(CONFIG_POWER_RESET_AT91_POWEROFF) += at91-poweroff.o obj-$(CONFIG_POWER_RESET_AT91_RESET) += at91-reset.o obj-$(CONFIG_POWER_RESET_AT91_SAMA5D2_SHDWC) += at91-sama5d2_shdwc.o +obj-$(CONFIG_POWER_RESET_ATC260X) += atc260x-poweroff.o obj-$(CONFIG_POWER_RESET_AXXIA) += axxia-reset.o obj-$(CONFIG_POWER_RESET_BRCMKONA) += brcm-kona-reset.o obj-$(CONFIG_POWER_RESET_BRCMSTB) += brcmstb-reboot.o @@ -29,7 +30,6 @@ obj-$(CONFIG_POWER_RESET_KEYSTONE) += keystone-reset.o obj-$(CONFIG_POWER_RESET_SYSCON) += syscon-reboot.o obj-$(CONFIG_POWER_RESET_SYSCON_POWEROFF) += syscon-poweroff.o obj-$(CONFIG_POWER_RESET_RMOBILE) += rmobile-reset.o -obj-$(CONFIG_POWER_RESET_ZX) += zx-reboot.o obj-$(CONFIG_REBOOT_MODE) += reboot-mode.o obj-$(CONFIG_SYSCON_REBOOT_MODE) += syscon-reboot-mode.o obj-$(CONFIG_POWER_RESET_SC27XX) += sc27xx-poweroff.o diff --git a/drivers/power/reset/at91-sama5d2_shdwc.c b/drivers/power/reset/at91-sama5d2_shdwc.c index 2fe3a627cb53..125e592af445 100644 --- a/drivers/power/reset/at91-sama5d2_shdwc.c +++ b/drivers/power/reset/at91-sama5d2_shdwc.c @@ -37,7 +37,7 @@ #define AT91_SHDW_MR 0x04 /* Shut Down Mode Register */ #define AT91_SHDW_WKUPDBC_SHIFT 24 -#define AT91_SHDW_WKUPDBC_MASK GENMASK(31, 16) +#define AT91_SHDW_WKUPDBC_MASK GENMASK(26, 24) #define AT91_SHDW_WKUPDBC(x) (((x) << AT91_SHDW_WKUPDBC_SHIFT) \ & AT91_SHDW_WKUPDBC_MASK) @@ -78,9 +78,15 @@ struct pmc_reg_config { u8 mckr; }; +struct ddrc_reg_config { + u32 type_offset; + u32 type_mask; +}; + struct reg_config { struct shdwc_reg_config shdwc; struct pmc_reg_config pmc; + struct ddrc_reg_config ddrc; }; struct shdwc { @@ -262,6 +268,10 @@ static const struct reg_config sama5d2_reg_config = { .pmc = { .mckr = 0x30, }, + .ddrc = { + .type_offset = AT91_DDRSDRC_MDR, + .type_mask = AT91_DDRSDRC_MD + }, }; static const struct reg_config sam9x60_reg_config = { @@ -275,6 +285,23 @@ static const struct reg_config sam9x60_reg_config = { .pmc = { .mckr = 0x28, }, + .ddrc = { + .type_offset = AT91_DDRSDRC_MDR, + .type_mask = AT91_DDRSDRC_MD + }, +}; + +static const struct reg_config sama7g5_reg_config = { + .shdwc = { + .wkup_pin_input = 0, + .mr_rtcwk_shift = 17, + .mr_rttwk_shift = 16, + .sr_rtcwk_shift = 5, + .sr_rttwk_shift = 4, + }, + .pmc = { + .mckr = 0x28, + }, }; static const struct of_device_id at91_shdwc_of_match[] = { @@ -285,6 +312,10 @@ static const struct of_device_id at91_shdwc_of_match[] = { { .compatible = "microchip,sam9x60-shdwc", .data = &sam9x60_reg_config, + }, + { + .compatible = "microchip,sama7g5-shdwc", + .data = &sama7g5_reg_config, }, { /*sentinel*/ } @@ -294,6 +325,7 @@ MODULE_DEVICE_TABLE(of, at91_shdwc_of_match); static const struct of_device_id at91_pmc_ids[] = { { .compatible = "atmel,sama5d2-pmc" }, { .compatible = "microchip,sam9x60-pmc" }, + { .compatible = "microchip,sama7g5-pmc" }, { /* Sentinel. */ } }; @@ -355,30 +387,34 @@ static int __init at91_shdwc_probe(struct platform_device *pdev) goto clk_disable; } - np = of_find_compatible_node(NULL, NULL, "atmel,sama5d3-ddramc"); - if (!np) { - ret = -ENODEV; - goto unmap; - } + if (at91_shdwc->rcfg->ddrc.type_mask) { + np = of_find_compatible_node(NULL, NULL, + "atmel,sama5d3-ddramc"); + if (!np) { + ret = -ENODEV; + goto unmap; + } - at91_shdwc->mpddrc_base = of_iomap(np, 0); - of_node_put(np); + at91_shdwc->mpddrc_base = of_iomap(np, 0); + of_node_put(np); - if (!at91_shdwc->mpddrc_base) { - ret = -ENOMEM; - goto unmap; + if (!at91_shdwc->mpddrc_base) { + ret = -ENOMEM; + goto unmap; + } + + ddr_type = readl(at91_shdwc->mpddrc_base + + at91_shdwc->rcfg->ddrc.type_offset) & + at91_shdwc->rcfg->ddrc.type_mask; + if (ddr_type != AT91_DDRSDRC_MD_LPDDR2 && + ddr_type != AT91_DDRSDRC_MD_LPDDR3) { + iounmap(at91_shdwc->mpddrc_base); + at91_shdwc->mpddrc_base = NULL; + } } pm_power_off = at91_poweroff; - 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; - } - return 0; unmap: diff --git a/drivers/power/reset/atc260x-poweroff.c b/drivers/power/reset/atc260x-poweroff.c new file mode 100644 index 000000000000..98f20251a6d1 --- /dev/null +++ b/drivers/power/reset/atc260x-poweroff.c @@ -0,0 +1,262 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Poweroff & reset driver for Actions Semi ATC260x PMICs + * + * Copyright (c) 2020 Cristian Ciocaltea <cristian.ciocaltea@gmail.com> + */ + +#include <linux/delay.h> +#include <linux/mfd/atc260x/core.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/power_supply.h> +#include <linux/reboot.h> +#include <linux/regmap.h> + +struct atc260x_pwrc { + struct device *dev; + struct regmap *regmap; + struct notifier_block restart_nb; + int (*do_poweroff)(const struct atc260x_pwrc *pwrc, bool restart); +}; + +/* Global variable needed only for pm_power_off */ +static struct atc260x_pwrc *atc260x_pwrc_data; + +static int atc2603c_do_poweroff(const struct atc260x_pwrc *pwrc, bool restart) +{ + int ret, deep_sleep = 0; + uint reg_mask, reg_val; + + /* S4-Deep Sleep Mode is NOT available for WALL/USB power */ + if (!restart && !power_supply_is_system_supplied()) { + deep_sleep = 1; + dev_info(pwrc->dev, "Enabling S4-Deep Sleep Mode"); + } + + /* Update wakeup sources */ + reg_val = ATC2603C_PMU_SYS_CTL0_ONOFF_LONG_WK_EN | + (restart ? ATC2603C_PMU_SYS_CTL0_RESET_WK_EN + : ATC2603C_PMU_SYS_CTL0_ONOFF_SHORT_WK_EN); + + ret = regmap_update_bits(pwrc->regmap, ATC2603C_PMU_SYS_CTL0, + ATC2603C_PMU_SYS_CTL0_WK_ALL, reg_val); + if (ret) + dev_warn(pwrc->dev, "failed to write SYS_CTL0: %d\n", ret); + + /* Update power mode */ + reg_mask = ATC2603C_PMU_SYS_CTL3_EN_S2 | ATC2603C_PMU_SYS_CTL3_EN_S3; + + ret = regmap_update_bits(pwrc->regmap, ATC2603C_PMU_SYS_CTL3, reg_mask, + deep_sleep ? 0 : ATC2603C_PMU_SYS_CTL3_EN_S3); + if (ret) { + dev_err(pwrc->dev, "failed to write SYS_CTL3: %d\n", ret); + return ret; + } + + /* Trigger poweroff / restart sequence */ + reg_mask = restart ? ATC2603C_PMU_SYS_CTL0_RESTART_EN + : ATC2603C_PMU_SYS_CTL1_EN_S1; + reg_val = restart ? ATC2603C_PMU_SYS_CTL0_RESTART_EN : 0; + + ret = regmap_update_bits(pwrc->regmap, + restart ? ATC2603C_PMU_SYS_CTL0 : ATC2603C_PMU_SYS_CTL1, + reg_mask, reg_val); + if (ret) { + dev_err(pwrc->dev, "failed to write SYS_CTL%d: %d\n", + restart ? 0 : 1, ret); + return ret; + } + + /* Wait for trigger completion */ + mdelay(200); + + return 0; +} + +static int atc2609a_do_poweroff(const struct atc260x_pwrc *pwrc, bool restart) +{ + int ret, deep_sleep = 0; + uint reg_mask, reg_val; + + /* S4-Deep Sleep Mode is NOT available for WALL/USB power */ + if (!restart && !power_supply_is_system_supplied()) { + deep_sleep = 1; + dev_info(pwrc->dev, "Enabling S4-Deep Sleep Mode"); + } + + /* Update wakeup sources */ + reg_val = ATC2609A_PMU_SYS_CTL0_ONOFF_LONG_WK_EN | + (restart ? ATC2609A_PMU_SYS_CTL0_RESET_WK_EN + : ATC2609A_PMU_SYS_CTL0_ONOFF_SHORT_WK_EN); + + ret = regmap_update_bits(pwrc->regmap, ATC2609A_PMU_SYS_CTL0, + ATC2609A_PMU_SYS_CTL0_WK_ALL, reg_val); + if (ret) + dev_warn(pwrc->dev, "failed to write SYS_CTL0: %d\n", ret); + + /* Update power mode */ + reg_mask = ATC2609A_PMU_SYS_CTL3_EN_S2 | ATC2609A_PMU_SYS_CTL3_EN_S3; + + ret = regmap_update_bits(pwrc->regmap, ATC2609A_PMU_SYS_CTL3, reg_mask, + deep_sleep ? 0 : ATC2609A_PMU_SYS_CTL3_EN_S3); + if (ret) { + dev_err(pwrc->dev, "failed to write SYS_CTL3: %d\n", ret); + return ret; + } + + /* Trigger poweroff / restart sequence */ + reg_mask = restart ? ATC2609A_PMU_SYS_CTL0_RESTART_EN + : ATC2609A_PMU_SYS_CTL1_EN_S1; + reg_val = restart ? ATC2609A_PMU_SYS_CTL0_RESTART_EN : 0; + + ret = regmap_update_bits(pwrc->regmap, + restart ? ATC2609A_PMU_SYS_CTL0 : ATC2609A_PMU_SYS_CTL1, + reg_mask, reg_val); + if (ret) { + dev_err(pwrc->dev, "failed to write SYS_CTL%d: %d\n", + restart ? 0 : 1, ret); + return ret; + } + + /* Wait for trigger completion */ + mdelay(200); + + return 0; +} + +static int atc2603c_init(const struct atc260x_pwrc *pwrc) +{ + int ret; + + /* + * Delay transition from S2/S3 to S1 in order to avoid + * DDR init failure in Bootloader. + */ + ret = regmap_update_bits(pwrc->regmap, ATC2603C_PMU_SYS_CTL3, + ATC2603C_PMU_SYS_CTL3_S2S3TOS1_TIMER_EN, + ATC2603C_PMU_SYS_CTL3_S2S3TOS1_TIMER_EN); + if (ret) + dev_warn(pwrc->dev, "failed to write SYS_CTL3: %d\n", ret); + + /* Set wakeup sources */ + ret = regmap_update_bits(pwrc->regmap, ATC2603C_PMU_SYS_CTL0, + ATC2603C_PMU_SYS_CTL0_WK_ALL, + ATC2603C_PMU_SYS_CTL0_HDSW_WK_EN | + ATC2603C_PMU_SYS_CTL0_ONOFF_LONG_WK_EN); + if (ret) + dev_warn(pwrc->dev, "failed to write SYS_CTL0: %d\n", ret); + + return ret; +} + +static int atc2609a_init(const struct atc260x_pwrc *pwrc) +{ + int ret; + + /* Set wakeup sources */ + ret = regmap_update_bits(pwrc->regmap, ATC2609A_PMU_SYS_CTL0, + ATC2609A_PMU_SYS_CTL0_WK_ALL, + ATC2609A_PMU_SYS_CTL0_HDSW_WK_EN | + ATC2609A_PMU_SYS_CTL0_ONOFF_LONG_WK_EN); + if (ret) + dev_warn(pwrc->dev, "failed to write SYS_CTL0: %d\n", ret); + + return ret; +} + +static void atc260x_pwrc_pm_handler(void) +{ + atc260x_pwrc_data->do_poweroff(atc260x_pwrc_data, false); + + WARN_ONCE(1, "Unable to power off system\n"); +} + +static int atc260x_pwrc_restart_handler(struct notifier_block *nb, + unsigned long mode, void *cmd) +{ + struct atc260x_pwrc *pwrc = container_of(nb, struct atc260x_pwrc, + restart_nb); + pwrc->do_poweroff(pwrc, true); + + return NOTIFY_DONE; +} + +static int atc260x_pwrc_probe(struct platform_device *pdev) +{ + struct atc260x *atc260x = dev_get_drvdata(pdev->dev.parent); + struct atc260x_pwrc *priv; + int ret; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = &pdev->dev; + priv->regmap = atc260x->regmap; + priv->restart_nb.notifier_call = atc260x_pwrc_restart_handler; + priv->restart_nb.priority = 192; + + switch (atc260x->ic_type) { + case ATC2603C: + priv->do_poweroff = atc2603c_do_poweroff; + ret = atc2603c_init(priv); + break; + case ATC2609A: + priv->do_poweroff = atc2609a_do_poweroff; + ret = atc2609a_init(priv); + break; + default: + dev_err(priv->dev, + "Poweroff not supported for ATC260x PMIC type: %u\n", + atc260x->ic_type); + return -EINVAL; + } + + if (ret) + return ret; + + platform_set_drvdata(pdev, priv); + + if (!pm_power_off) { + atc260x_pwrc_data = priv; + pm_power_off = atc260x_pwrc_pm_handler; + } else { + dev_warn(priv->dev, "Poweroff callback already assigned\n"); + } + + ret = register_restart_handler(&priv->restart_nb); + if (ret) + dev_err(priv->dev, "failed to register restart handler: %d\n", + ret); + + return ret; +} + +static int atc260x_pwrc_remove(struct platform_device *pdev) +{ + struct atc260x_pwrc *priv = platform_get_drvdata(pdev); + + if (atc260x_pwrc_data == priv) { + pm_power_off = NULL; + atc260x_pwrc_data = NULL; + } + + unregister_restart_handler(&priv->restart_nb); + + return 0; +} + +static struct platform_driver atc260x_pwrc_driver = { + .probe = atc260x_pwrc_probe, + .remove = atc260x_pwrc_remove, + .driver = { + .name = "atc260x-pwrc", + }, +}; + +module_platform_driver(atc260x_pwrc_driver); + +MODULE_DESCRIPTION("Poweroff & reset driver for ATC260x PMICs"); +MODULE_AUTHOR("Cristian Ciocaltea <cristian.ciocaltea@gmail.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/power/reset/linkstation-poweroff.c b/drivers/power/reset/linkstation-poweroff.c index 39e89baedb5f..f1e843df0e16 100644 --- a/drivers/power/reset/linkstation-poweroff.c +++ b/drivers/power/reset/linkstation-poweroff.c @@ -113,6 +113,7 @@ static int __init linkstation_poweroff_init(void) return -EPROBE_DEFER; phydev = phy_find_first(bus); + put_device(&bus->dev); if (!phydev) return -EPROBE_DEFER; diff --git a/drivers/power/reset/zx-reboot.c b/drivers/power/reset/zx-reboot.c deleted file mode 100644 index 457950833dba..000000000000 --- a/drivers/power/reset/zx-reboot.c +++ /dev/null @@ -1,86 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * ZTE zx296702 SoC reset code - * - * Copyright (c) 2015 Linaro Ltd. - * - * Author: Jun Nie <jun.nie@linaro.org> - */ - -#include <linux/delay.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/notifier.h> -#include <linux/of_address.h> -#include <linux/platform_device.h> -#include <linux/reboot.h> - -static void __iomem *base; -static void __iomem *pcu_base; - -static int zx_restart_handler(struct notifier_block *this, - unsigned long mode, void *cmd) -{ - writel_relaxed(1, base + 0xb0); - writel_relaxed(1, pcu_base + 0x34); - - mdelay(50); - pr_emerg("Unable to restart system\n"); - - return NOTIFY_DONE; -} - -static struct notifier_block zx_restart_nb = { - .notifier_call = zx_restart_handler, - .priority = 128, -}; - -static int zx_reboot_probe(struct platform_device *pdev) -{ - struct device_node *np = pdev->dev.of_node; - int err; - - base = of_iomap(np, 0); - if (!base) { - WARN(1, "failed to map base address"); - return -ENODEV; - } - - np = of_find_compatible_node(NULL, NULL, "zte,zx296702-pcu"); - pcu_base = of_iomap(np, 0); - of_node_put(np); - if (!pcu_base) { - iounmap(base); - WARN(1, "failed to map pcu_base address"); - return -ENODEV; - } - - err = register_restart_handler(&zx_restart_nb); - if (err) { - iounmap(base); - iounmap(pcu_base); - dev_err(&pdev->dev, "Register restart handler failed(err=%d)\n", - err); - } - - return err; -} - -static const struct of_device_id zx_reboot_of_match[] = { - { .compatible = "zte,sysctrl" }, - {} -}; -MODULE_DEVICE_TABLE(of, zx_reboot_of_match); - -static struct platform_driver zx_reboot_driver = { - .probe = zx_reboot_probe, - .driver = { - .name = "zx-reboot", - .of_match_table = zx_reboot_of_match, - }, -}; -module_platform_driver(zx_reboot_driver); - -MODULE_DESCRIPTION("ZTE SoCs reset driver"); -MODULE_AUTHOR("Jun Nie <jun.nie@linaro.org>"); -MODULE_LICENSE("GPL v2"); diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index eec646c568b7..006b95eca673 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -229,6 +229,7 @@ config BATTERY_SBS config CHARGER_SBS tristate "SBS Compliant charger" depends on I2C + select REGMAP_I2C help Say Y to include support for SBS compliant battery chargers. @@ -513,6 +514,14 @@ config CHARGER_LT3651 Say Y to include support for the Analog Devices (Linear Technology) LT3651 battery charger which reports its status via GPIO lines. +config CHARGER_LTC4162L + tristate "LTC4162-L charger" + depends on I2C + select REGMAP_I2C + help + Say Y to include support for the Analog Devices (Linear Technology) + LTC4162-L battery charger connected to I2C. + config CHARGER_MAX14577 tristate "Maxim MAX14577/77836 battery charger driver" depends on MFD_MAX14577 @@ -546,6 +555,7 @@ config CHARGER_MAX77693 config CHARGER_MAX8997 tristate "Maxim MAX8997/MAX8966 PMIC battery charger driver" depends on MFD_MAX8997 && REGULATOR_MAX8997 + depends on EXTCON || !EXTCON help Say Y to enable support for the battery charger control sysfs and platform data of MAX8997/LP3974 PMICs. @@ -645,6 +655,17 @@ config CHARGER_BQ25980 Say Y to enable support for the TI BQ25980, BQ25975 and BQ25960 series of fast battery chargers. +config CHARGER_BQ256XX + tristate "TI BQ256XX battery charger driver" + depends on I2C + depends on GPIOLIB || COMPILE_TEST + select REGMAP_I2C + help + Say Y to enable support for the TI BQ256XX battery chargers. The + BQ256XX family of devices are highly-integrated, switch-mode battery + charge management and system power path management devices for single + cell Li-ion and Li-polymer batteries. + config CHARGER_SMB347 tristate "Summit Microelectronics SMB3XX Battery Charger" depends on I2C @@ -774,4 +795,10 @@ config RN5T618_POWER This driver can also be built as a module. If so, the module will be called rn5t618_power. +config BATTERY_ACER_A500 + tristate "Acer Iconia Tab A500 battery driver" + depends on MFD_ACER_A500_EC + help + Say Y to include support for Acer Iconia Tab A500 battery fuel gauge. + endif # POWER_SUPPLY diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index dd4b86318cd9..5e5fdbbef531 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -70,6 +70,7 @@ obj-$(CONFIG_CHARGER_LP8788) += lp8788-charger.o obj-$(CONFIG_CHARGER_GPIO) += gpio-charger.o obj-$(CONFIG_CHARGER_MANAGER) += charger-manager.o obj-$(CONFIG_CHARGER_LT3651) += lt3651-charger.o +obj-$(CONFIG_CHARGER_LTC4162L) += ltc4162-l-charger.o obj-$(CONFIG_CHARGER_MAX14577) += max14577_charger.o obj-$(CONFIG_CHARGER_DETECTOR_MAX14656) += max14656_charger_detector.o obj-$(CONFIG_CHARGER_MAX77650) += max77650-charger.o @@ -85,6 +86,7 @@ obj-$(CONFIG_CHARGER_BQ24735) += bq24735-charger.o obj-$(CONFIG_CHARGER_BQ2515X) += bq2515x_charger.o obj-$(CONFIG_CHARGER_BQ25890) += bq25890_charger.o obj-$(CONFIG_CHARGER_BQ25980) += bq25980_charger.o +obj-$(CONFIG_CHARGER_BQ256XX) += bq256xx_charger.o obj-$(CONFIG_CHARGER_SMB347) += smb347-charger.o obj-$(CONFIG_CHARGER_TPS65090) += tps65090-charger.o obj-$(CONFIG_CHARGER_TPS65217) += tps65217_charger.o @@ -98,3 +100,4 @@ obj-$(CONFIG_CHARGER_BD70528) += bd70528-charger.o obj-$(CONFIG_CHARGER_BD99954) += bd99954-charger.o obj-$(CONFIG_CHARGER_WILCO) += wilco-charger.o obj-$(CONFIG_RN5T618_POWER) += rn5t618_power.o +obj-$(CONFIG_BATTERY_ACER_A500) += acer_a500_battery.o diff --git a/drivers/power/supply/ab8500_fg.c b/drivers/power/supply/ab8500_fg.c index 3873e4857e3d..06ff42c71f24 100644 --- a/drivers/power/supply/ab8500_fg.c +++ b/drivers/power/supply/ab8500_fg.c @@ -857,7 +857,7 @@ static int ab8500_fg_volt_to_capacity(struct ab8500_fg *di, int voltage) const struct abx500_v_to_cap *tbl; int cap = 0; - tbl = di->bm->bat_type[di->bm->batt_id].v_to_cap_tbl, + tbl = di->bm->bat_type[di->bm->batt_id].v_to_cap_tbl; tbl_size = di->bm->bat_type[di->bm->batt_id].n_v_cap_tbl_elements; for (i = 0; i < tbl_size; ++i) { diff --git a/drivers/power/supply/acer_a500_battery.c b/drivers/power/supply/acer_a500_battery.c new file mode 100644 index 000000000000..32a0bfcac08f --- /dev/null +++ b/drivers/power/supply/acer_a500_battery.c @@ -0,0 +1,297 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Battery driver for Acer Iconia Tab A500. + * + * Copyright 2020 GRATE-driver project. + * + * Based on downstream driver from Acer Inc. + * Based on NVIDIA Gas Gauge driver for SBS Compliant Batteries. + * + * Copyright (c) 2010, NVIDIA Corporation. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/power_supply.h> +#include <linux/regmap.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/workqueue.h> + +enum { + REG_CAPACITY, + REG_VOLTAGE, + REG_CURRENT, + REG_DESIGN_CAPACITY, + REG_TEMPERATURE, +}; + +#define EC_DATA(_reg, _psp) { \ + .psp = POWER_SUPPLY_PROP_ ## _psp, \ + .reg = _reg, \ +} + +static const struct battery_register { + enum power_supply_property psp; + unsigned int reg; +} ec_data[] = { + [REG_CAPACITY] = EC_DATA(0x00, CAPACITY), + [REG_VOLTAGE] = EC_DATA(0x01, VOLTAGE_NOW), + [REG_CURRENT] = EC_DATA(0x03, CURRENT_NOW), + [REG_DESIGN_CAPACITY] = EC_DATA(0x08, CHARGE_FULL_DESIGN), + [REG_TEMPERATURE] = EC_DATA(0x0a, TEMP), +}; + +static const enum power_supply_property a500_battery_properties[] = { + POWER_SUPPLY_PROP_CAPACITY, + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_TECHNOLOGY, + POWER_SUPPLY_PROP_TEMP, + POWER_SUPPLY_PROP_VOLTAGE_NOW, +}; + +struct a500_battery { + struct delayed_work poll_work; + struct power_supply *psy; + struct regmap *regmap; + unsigned int capacity; +}; + +static bool a500_battery_update_capacity(struct a500_battery *bat) +{ + unsigned int capacity; + int err; + + err = regmap_read(bat->regmap, ec_data[REG_CAPACITY].reg, &capacity); + if (err) + return false; + + /* capacity can be >100% even if max value is 100% */ + capacity = min(capacity, 100u); + + if (bat->capacity != capacity) { + bat->capacity = capacity; + return true; + } + + return false; +} + +static int a500_battery_get_status(struct a500_battery *bat) +{ + if (bat->capacity < 100) { + if (power_supply_am_i_supplied(bat->psy)) + return POWER_SUPPLY_STATUS_CHARGING; + else + return POWER_SUPPLY_STATUS_DISCHARGING; + } + + return POWER_SUPPLY_STATUS_FULL; +} + +static void a500_battery_unit_adjustment(struct device *dev, + enum power_supply_property psp, + union power_supply_propval *val) +{ + const unsigned int base_unit_conversion = 1000; + const unsigned int temp_kelvin_to_celsius = 2731; + + switch (psp) { + case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: + case POWER_SUPPLY_PROP_CURRENT_NOW: + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + val->intval *= base_unit_conversion; + break; + + case POWER_SUPPLY_PROP_TEMP: + val->intval -= temp_kelvin_to_celsius; + break; + + case POWER_SUPPLY_PROP_PRESENT: + val->intval = !!val->intval; + break; + + default: + dev_dbg(dev, + "%s: no need for unit conversion %d\n", __func__, psp); + } +} + +static int a500_battery_get_ec_data_index(struct device *dev, + enum power_supply_property psp) +{ + unsigned int i; + + /* + * DESIGN_CAPACITY register always returns a non-zero value if + * battery is connected and zero if disconnected, hence we'll use + * it for judging the battery presence. + */ + if (psp == POWER_SUPPLY_PROP_PRESENT) + psp = POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN; + + for (i = 0; i < ARRAY_SIZE(ec_data); i++) + if (psp == ec_data[i].psp) + return i; + + dev_dbg(dev, "%s: invalid property %u\n", __func__, psp); + + return -EINVAL; +} + +static int a500_battery_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct a500_battery *bat = power_supply_get_drvdata(psy); + struct device *dev = psy->dev.parent; + int ret = 0; + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + val->intval = a500_battery_get_status(bat); + break; + + case POWER_SUPPLY_PROP_TECHNOLOGY: + val->intval = POWER_SUPPLY_TECHNOLOGY_LION; + break; + + case POWER_SUPPLY_PROP_CAPACITY: + a500_battery_update_capacity(bat); + val->intval = bat->capacity; + break; + + case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: + case POWER_SUPPLY_PROP_CURRENT_NOW: + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + case POWER_SUPPLY_PROP_PRESENT: + case POWER_SUPPLY_PROP_TEMP: + ret = a500_battery_get_ec_data_index(dev, psp); + if (ret < 0) + break; + + ret = regmap_read(bat->regmap, ec_data[ret].reg, &val->intval); + break; + + default: + dev_err(dev, "%s: invalid property %u\n", __func__, psp); + return -EINVAL; + } + + if (!ret) { + /* convert units to match requirements of power supply class */ + a500_battery_unit_adjustment(dev, psp, val); + } + + dev_dbg(dev, "%s: property = %d, value = %x\n", + __func__, psp, val->intval); + + /* return NODATA for properties if battery not presents */ + if (ret) + return -ENODATA; + + return 0; +} + +static void a500_battery_poll_work(struct work_struct *work) +{ + struct a500_battery *bat; + bool capacity_changed; + + bat = container_of(work, struct a500_battery, poll_work.work); + capacity_changed = a500_battery_update_capacity(bat); + + if (capacity_changed) + power_supply_changed(bat->psy); + + /* continuously send uevent notification */ + schedule_delayed_work(&bat->poll_work, 30 * HZ); +} + +static const struct power_supply_desc a500_battery_desc = { + .name = "ec-battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .properties = a500_battery_properties, + .get_property = a500_battery_get_property, + .num_properties = ARRAY_SIZE(a500_battery_properties), + .external_power_changed = power_supply_changed, +}; + +static int a500_battery_probe(struct platform_device *pdev) +{ + struct power_supply_config psy_cfg = {}; + struct a500_battery *bat; + + bat = devm_kzalloc(&pdev->dev, sizeof(*bat), GFP_KERNEL); + if (!bat) + return -ENOMEM; + + platform_set_drvdata(pdev, bat); + + psy_cfg.of_node = pdev->dev.parent->of_node; + psy_cfg.drv_data = bat; + + bat->regmap = dev_get_regmap(pdev->dev.parent, "KB930"); + if (!bat->regmap) + return -EINVAL; + + bat->psy = devm_power_supply_register_no_ws(&pdev->dev, + &a500_battery_desc, + &psy_cfg); + if (IS_ERR(bat->psy)) + return dev_err_probe(&pdev->dev, PTR_ERR(bat->psy), + "failed to register battery\n"); + + INIT_DELAYED_WORK(&bat->poll_work, a500_battery_poll_work); + schedule_delayed_work(&bat->poll_work, HZ); + + return 0; +} + +static int a500_battery_remove(struct platform_device *pdev) +{ + struct a500_battery *bat = dev_get_drvdata(&pdev->dev); + + cancel_delayed_work_sync(&bat->poll_work); + + return 0; +} + +static int __maybe_unused a500_battery_suspend(struct device *dev) +{ + struct a500_battery *bat = dev_get_drvdata(dev); + + cancel_delayed_work_sync(&bat->poll_work); + + return 0; +} + +static int __maybe_unused a500_battery_resume(struct device *dev) +{ + struct a500_battery *bat = dev_get_drvdata(dev); + + schedule_delayed_work(&bat->poll_work, HZ); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(a500_battery_pm_ops, + a500_battery_suspend, a500_battery_resume); + +static struct platform_driver a500_battery_driver = { + .driver = { + .name = "acer-a500-iconia-battery", + .pm = &a500_battery_pm_ops, + }, + .probe = a500_battery_probe, + .remove = a500_battery_remove, +}; +module_platform_driver(a500_battery_driver); + +MODULE_DESCRIPTION("Battery gauge driver for Acer Iconia Tab A500"); +MODULE_AUTHOR("Dmitry Osipenko <digetx@gmail.com>"); +MODULE_ALIAS("platform:acer-a500-iconia-battery"); +MODULE_LICENSE("GPL"); diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c index 70b28b699a80..8933ae26c3d6 100644 --- a/drivers/power/supply/axp20x_usb_power.c +++ b/drivers/power/supply/axp20x_usb_power.c @@ -593,6 +593,7 @@ static int axp20x_usb_power_probe(struct platform_device *pdev) power->axp20x_id = axp_data->axp20x_id; power->regmap = axp20x->regmap; power->num_irqs = axp_data->num_irq_names; + INIT_DELAYED_WORK(&power->vbus_detect, axp20x_usb_power_poll_vbus); if (power->axp20x_id == AXP202_ID) { /* Enable vbus valid checking */ @@ -645,7 +646,6 @@ static int axp20x_usb_power_probe(struct platform_device *pdev) } } - INIT_DELAYED_WORK(&power->vbus_detect, axp20x_usb_power_poll_vbus); if (axp20x_usb_vbus_needs_polling(power)) queue_delayed_work(system_power_efficient_wq, &power->vbus_detect, 0); diff --git a/drivers/power/supply/axp288_fuel_gauge.c b/drivers/power/supply/axp288_fuel_gauge.c index 148eb8105803..39e16ecb7638 100644 --- a/drivers/power/supply/axp288_fuel_gauge.c +++ b/drivers/power/supply/axp288_fuel_gauge.c @@ -732,6 +732,12 @@ static const struct dmi_system_id axp288_fuel_gauge_blacklist[] = { DMI_MATCH(DMI_BOARD_VERSION, "V1.1"), }, }, + { /* Mele PCG03 Mini PC */ + .matches = { + DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Mini PC"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "Mini PC"), + }, + }, { /* Minix Neo Z83-4 mini PC */ .matches = { diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c index 4841e14a5bfb..852e86bfe2fb 100644 --- a/drivers/power/supply/bq24190_charger.c +++ b/drivers/power/supply/bq24190_charger.c @@ -1766,7 +1766,7 @@ static int bq24190_probe(struct i2c_client *client, charger_cfg.drv_data = bdi; charger_cfg.of_node = dev->of_node; charger_cfg.supplied_to = bq24190_charger_supplied_to; - charger_cfg.num_supplicants = ARRAY_SIZE(bq24190_charger_supplied_to), + charger_cfg.num_supplicants = ARRAY_SIZE(bq24190_charger_supplied_to); bdi->charger = power_supply_register(dev, &bq24190_charger_desc, &charger_cfg); if (IS_ERR(bdi->charger)) { diff --git a/drivers/power/supply/bq256xx_charger.c b/drivers/power/supply/bq256xx_charger.c new file mode 100644 index 000000000000..2ab5ba4af92b --- /dev/null +++ b/drivers/power/supply/bq256xx_charger.c @@ -0,0 +1,1749 @@ +// SPDX-License-Identifier: GPL-2.0 +// BQ256XX Battery Charger Driver +// Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/ + +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/gpio/consumer.h> +#include <linux/power_supply.h> +#include <linux/regmap.h> +#include <linux/types.h> +#include <linux/usb/phy.h> +#include <linux/device.h> +#include <linux/moduleparam.h> +#include <linux/slab.h> +#include <linux/acpi.h> + +#define BQ256XX_MANUFACTURER "Texas Instruments" + +#define BQ256XX_INPUT_CURRENT_LIMIT 0x00 +#define BQ256XX_CHARGER_CONTROL_0 0x01 +#define BQ256XX_CHARGE_CURRENT_LIMIT 0x02 +#define BQ256XX_PRECHG_AND_TERM_CURR_LIM 0x03 +#define BQ256XX_BATTERY_VOLTAGE_LIMIT 0x04 +#define BQ256XX_CHARGER_CONTROL_1 0x05 +#define BQ256XX_CHARGER_CONTROL_2 0x06 +#define BQ256XX_CHARGER_CONTROL_3 0x07 +#define BQ256XX_CHARGER_STATUS_0 0x08 +#define BQ256XX_CHARGER_STATUS_1 0x09 +#define BQ256XX_CHARGER_STATUS_2 0x0a +#define BQ256XX_PART_INFORMATION 0x0b +#define BQ256XX_CHARGER_CONTROL_4 0x0c + +#define BQ256XX_IINDPM_MASK GENMASK(4, 0) +#define BQ256XX_IINDPM_STEP_uA 100000 +#define BQ256XX_IINDPM_OFFSET_uA 100000 +#define BQ256XX_IINDPM_MIN_uA 100000 +#define BQ256XX_IINDPM_MAX_uA 3200000 +#define BQ256XX_IINDPM_DEF_uA 2400000 + +#define BQ256XX_VINDPM_MASK GENMASK(3, 0) +#define BQ256XX_VINDPM_STEP_uV 100000 +#define BQ256XX_VINDPM_OFFSET_uV 3900000 +#define BQ256XX_VINDPM_MIN_uV 3900000 +#define BQ256XX_VINDPM_MAX_uV 5400000 +#define BQ256XX_VINDPM_DEF_uV 4500000 + +#define BQ256XX_VBATREG_MASK GENMASK(7, 3) +#define BQ2560X_VBATREG_STEP_uV 32000 +#define BQ2560X_VBATREG_OFFSET_uV 3856000 +#define BQ2560X_VBATREG_MIN_uV 3856000 +#define BQ2560X_VBATREG_MAX_uV 4624000 +#define BQ2560X_VBATREG_DEF_uV 4208000 +#define BQ25601D_VBATREG_OFFSET_uV 3847000 +#define BQ25601D_VBATREG_MIN_uV 3847000 +#define BQ25601D_VBATREG_MAX_uV 4615000 +#define BQ25601D_VBATREG_DEF_uV 4199000 +#define BQ2561X_VBATREG_STEP_uV 10000 +#define BQ25611D_VBATREG_MIN_uV 3494000 +#define BQ25611D_VBATREG_MAX_uV 4510000 +#define BQ25611D_VBATREG_DEF_uV 4190000 +#define BQ25618_VBATREG_MIN_uV 3504000 +#define BQ25618_VBATREG_MAX_uV 4500000 +#define BQ25618_VBATREG_DEF_uV 4200000 +#define BQ256XX_VBATREG_BIT_SHIFT 3 +#define BQ2561X_VBATREG_THRESH 0x8 +#define BQ25611D_VBATREG_THRESH_uV 4290000 +#define BQ25618_VBATREG_THRESH_uV 4300000 + +#define BQ256XX_ITERM_MASK GENMASK(3, 0) +#define BQ256XX_ITERM_STEP_uA 60000 +#define BQ256XX_ITERM_OFFSET_uA 60000 +#define BQ256XX_ITERM_MIN_uA 60000 +#define BQ256XX_ITERM_MAX_uA 780000 +#define BQ256XX_ITERM_DEF_uA 180000 +#define BQ25618_ITERM_STEP_uA 20000 +#define BQ25618_ITERM_OFFSET_uA 20000 +#define BQ25618_ITERM_MIN_uA 20000 +#define BQ25618_ITERM_MAX_uA 260000 +#define BQ25618_ITERM_DEF_uA 60000 + +#define BQ256XX_IPRECHG_MASK GENMASK(7, 4) +#define BQ256XX_IPRECHG_STEP_uA 60000 +#define BQ256XX_IPRECHG_OFFSET_uA 60000 +#define BQ256XX_IPRECHG_MIN_uA 60000 +#define BQ256XX_IPRECHG_MAX_uA 780000 +#define BQ256XX_IPRECHG_DEF_uA 180000 +#define BQ25618_IPRECHG_STEP_uA 20000 +#define BQ25618_IPRECHG_OFFSET_uA 20000 +#define BQ25618_IPRECHG_MIN_uA 20000 +#define BQ25618_IPRECHG_MAX_uA 260000 +#define BQ25618_IPRECHG_DEF_uA 40000 +#define BQ256XX_IPRECHG_BIT_SHIFT 4 + +#define BQ256XX_ICHG_MASK GENMASK(5, 0) +#define BQ256XX_ICHG_STEP_uA 60000 +#define BQ256XX_ICHG_MIN_uA 0 +#define BQ256XX_ICHG_MAX_uA 3000000 +#define BQ2560X_ICHG_DEF_uA 2040000 +#define BQ25611D_ICHG_DEF_uA 1020000 +#define BQ25618_ICHG_STEP_uA 20000 +#define BQ25618_ICHG_MIN_uA 0 +#define BQ25618_ICHG_MAX_uA 1500000 +#define BQ25618_ICHG_DEF_uA 340000 +#define BQ25618_ICHG_THRESH 0x3c +#define BQ25618_ICHG_THRESH_uA 1180000 + +#define BQ256XX_VBUS_STAT_MASK GENMASK(7, 5) +#define BQ256XX_VBUS_STAT_NO_INPUT 0 +#define BQ256XX_VBUS_STAT_USB_SDP BIT(5) +#define BQ256XX_VBUS_STAT_USB_CDP BIT(6) +#define BQ256XX_VBUS_STAT_USB_DCP (BIT(6) | BIT(5)) +#define BQ256XX_VBUS_STAT_USB_OTG (BIT(7) | BIT(6) | BIT(5)) + +#define BQ256XX_CHRG_STAT_MASK GENMASK(4, 3) +#define BQ256XX_CHRG_STAT_NOT_CHRGING 0 +#define BQ256XX_CHRG_STAT_PRECHRGING BIT(3) +#define BQ256XX_CHRG_STAT_FAST_CHRGING BIT(4) +#define BQ256XX_CHRG_STAT_CHRG_TERM (BIT(4) | BIT(3)) + +#define BQ256XX_PG_STAT_MASK BIT(2) +#define BQ256XX_WDT_FAULT_MASK BIT(7) +#define BQ256XX_CHRG_FAULT_MASK GENMASK(5, 4) +#define BQ256XX_CHRG_FAULT_NORMAL 0 +#define BQ256XX_CHRG_FAULT_INPUT BIT(4) +#define BQ256XX_CHRG_FAULT_THERM BIT(5) +#define BQ256XX_CHRG_FAULT_CST_EXPIRE (BIT(5) | BIT(4)) +#define BQ256XX_BAT_FAULT_MASK BIT(3) +#define BQ256XX_NTC_FAULT_MASK GENMASK(2, 0) +#define BQ256XX_NTC_FAULT_WARM BIT(1) +#define BQ256XX_NTC_FAULT_COOL (BIT(1) | BIT(0)) +#define BQ256XX_NTC_FAULT_COLD (BIT(2) | BIT(0)) +#define BQ256XX_NTC_FAULT_HOT (BIT(2) | BIT(1)) + +#define BQ256XX_NUM_WD_VAL 4 +#define BQ256XX_WATCHDOG_MASK GENMASK(5, 4) +#define BQ256XX_WATCHDOG_MAX 1600000 +#define BQ256XX_WATCHDOG_DIS 0 +#define BQ256XX_WDT_BIT_SHIFT 4 + +#define BQ256XX_REG_RST BIT(7) + +/** + * struct bq256xx_init_data - + * @ichg: fast charge current + * @iindpm: input current limit + * @vbatreg: charge voltage + * @iterm: termination current + * @iprechg: precharge current + * @vindpm: input voltage limit + * @ichg_max: maximum fast charge current + * @vbatreg_max: maximum charge voltage + */ +struct bq256xx_init_data { + u32 ichg; + u32 iindpm; + u32 vbatreg; + u32 iterm; + u32 iprechg; + u32 vindpm; + u32 ichg_max; + u32 vbatreg_max; +}; + +/** + * struct bq256xx_state - + * @vbus_stat: VBUS status according to BQ256XX_CHARGER_STATUS_0 + * @chrg_stat: charging status according to BQ256XX_CHARGER_STATUS_0 + * @online: PG status according to BQ256XX_CHARGER_STATUS_0 + * + * @wdt_fault: watchdog fault according to BQ256XX_CHARGER_STATUS_1 + * @bat_fault: battery fault according to BQ256XX_CHARGER_STATUS_1 + * @chrg_fault: charging fault according to BQ256XX_CHARGER_STATUS_1 + * @ntc_fault: TS fault according to BQ256XX_CHARGER_STATUS_1 + */ +struct bq256xx_state { + u8 vbus_stat; + u8 chrg_stat; + bool online; + + u8 wdt_fault; + u8 bat_fault; + u8 chrg_fault; + u8 ntc_fault; +}; + +enum bq256xx_id { + BQ25600, + BQ25600D, + BQ25601, + BQ25601D, + BQ25618, + BQ25619, + BQ25611D, +}; + +/** + * struct bq256xx_device - + * @client: i2c client structure + * @regmap: register map structure + * @dev: device structure + * @lock: mutex lock structure + * + * @usb2_phy: usb_phy identifier + * @usb3_phy: usb_phy identifier + * @usb_nb: notifier block + * @usb_work: usb work queue + * @usb_event: usb_event code + * + * @model_name: i2c name string + * + * @init_data: initialization data + * @chip_info: device variant information + * @state: device status and faults + * @watchdog_timer: watchdog timer value in milliseconds + */ +struct bq256xx_device { + struct i2c_client *client; + struct device *dev; + struct power_supply *charger; + struct power_supply *battery; + struct mutex lock; + struct regmap *regmap; + + struct usb_phy *usb2_phy; + struct usb_phy *usb3_phy; + struct notifier_block usb_nb; + struct work_struct usb_work; + unsigned long usb_event; + + char model_name[I2C_NAME_SIZE]; + + struct bq256xx_init_data init_data; + const struct bq256xx_chip_info *chip_info; + struct bq256xx_state state; + int watchdog_timer; +}; + +/** + * struct bq256xx_chip_info - + * @model_id: device instance + * + * @bq256xx_regmap_config: regmap configuration struct + * @bq256xx_get_ichg: pointer to instance specific get_ichg function + * @bq256xx_get_iindpm: pointer to instance specific get_iindpm function + * @bq256xx_get_vbatreg: pointer to instance specific get_vbatreg function + * @bq256xx_get_iterm: pointer to instance specific get_iterm function + * @bq256xx_get_iprechg: pointer to instance specific get_iprechg function + * @bq256xx_get_vindpm: pointer to instance specific get_vindpm function + * + * @bq256xx_set_ichg: pointer to instance specific set_ichg function + * @bq256xx_set_iindpm: pointer to instance specific set_iindpm function + * @bq256xx_set_vbatreg: pointer to instance specific set_vbatreg function + * @bq256xx_set_iterm: pointer to instance specific set_iterm function + * @bq256xx_set_iprechg: pointer to instance specific set_iprechg function + * @bq256xx_set_vindpm: pointer to instance specific set_vindpm function + * + * @bq256xx_def_ichg: default ichg value in microamps + * @bq256xx_def_iindpm: default iindpm value in microamps + * @bq256xx_def_vbatreg: default vbatreg value in microvolts + * @bq256xx_def_iterm: default iterm value in microamps + * @bq256xx_def_iprechg: default iprechg value in microamps + * @bq256xx_def_vindpm: default vindpm value in microvolts + * + * @bq256xx_max_ichg: maximum charge current in microamps + * @bq256xx_max_vbatreg: maximum battery regulation voltage in microvolts + * + * @has_usb_detect: indicates whether device has BC1.2 detection + */ +struct bq256xx_chip_info { + int model_id; + + const struct regmap_config *bq256xx_regmap_config; + + int (*bq256xx_get_ichg)(struct bq256xx_device *bq); + int (*bq256xx_get_iindpm)(struct bq256xx_device *bq); + int (*bq256xx_get_vbatreg)(struct bq256xx_device *bq); + int (*bq256xx_get_iterm)(struct bq256xx_device *bq); + int (*bq256xx_get_iprechg)(struct bq256xx_device *bq); + int (*bq256xx_get_vindpm)(struct bq256xx_device *bq); + + int (*bq256xx_set_ichg)(struct bq256xx_device *bq, int ichg); + int (*bq256xx_set_iindpm)(struct bq256xx_device *bq, int iindpm); + int (*bq256xx_set_vbatreg)(struct bq256xx_device *bq, int vbatreg); + int (*bq256xx_set_iterm)(struct bq256xx_device *bq, int iterm); + int (*bq256xx_set_iprechg)(struct bq256xx_device *bq, int iprechg); + int (*bq256xx_set_vindpm)(struct bq256xx_device *bq, int vindpm); + + int bq256xx_def_ichg; + int bq256xx_def_iindpm; + int bq256xx_def_vbatreg; + int bq256xx_def_iterm; + int bq256xx_def_iprechg; + int bq256xx_def_vindpm; + + int bq256xx_max_ichg; + int bq256xx_max_vbatreg; + + bool has_usb_detect; +}; + +static int bq256xx_watchdog_time[BQ256XX_NUM_WD_VAL] = { + 0, 40000, 80000, 1600000 +}; + +static const int bq25611d_vbatreg_values[] = { + 3494000, 3590000, 3686000, 3790000, 3894000, 3990000, 4090000, 4140000, + 4190000 +}; + +static const int bq25618_619_vbatreg_values[] = { + 3504000, 3600000, 3696000, 3800000, 3904000, 4000000, 4100000, 4150000, + 4200000 +}; + +static const int bq25618_619_ichg_values[] = { + 1290000, 1360000, 1430000, 1500000 +}; + +static enum power_supply_usb_type bq256xx_usb_type[] = { + POWER_SUPPLY_USB_TYPE_SDP, + POWER_SUPPLY_USB_TYPE_CDP, + POWER_SUPPLY_USB_TYPE_DCP, + POWER_SUPPLY_USB_TYPE_UNKNOWN, + POWER_SUPPLY_USB_TYPE_ACA, +}; + +static int bq256xx_array_parse(int array_size, int val, const int array[]) +{ + int i = 0; + + if (val < array[i]) + return i - 1; + + if (val >= array[array_size - 1]) + return array_size - 1; + + for (i = 1; i < array_size; i++) { + if (val == array[i]) + return i; + + if (val > array[i - 1] && val < array[i]) { + if (val < array[i]) + return i - 1; + else + return i; + } + } + return -EINVAL; +} + +static int bq256xx_usb_notifier(struct notifier_block *nb, unsigned long val, + void *priv) +{ + struct bq256xx_device *bq = + container_of(nb, struct bq256xx_device, usb_nb); + + bq->usb_event = val; + queue_work(system_power_efficient_wq, &bq->usb_work); + + return NOTIFY_OK; +} + +static void bq256xx_usb_work(struct work_struct *data) +{ + struct bq256xx_device *bq = + container_of(data, struct bq256xx_device, usb_work); + + switch (bq->usb_event) { + case USB_EVENT_ID: + break; + case USB_EVENT_NONE: + power_supply_changed(bq->charger); + break; + default: + dev_err(bq->dev, "Error switching to charger mode.\n"); + break; + } +} + +static struct reg_default bq2560x_reg_defs[] = { + {BQ256XX_INPUT_CURRENT_LIMIT, 0x17}, + {BQ256XX_CHARGER_CONTROL_0, 0x1a}, + {BQ256XX_CHARGE_CURRENT_LIMIT, 0xa2}, + {BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x22}, + {BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x58}, + {BQ256XX_CHARGER_CONTROL_1, 0x9f}, + {BQ256XX_CHARGER_CONTROL_2, 0x66}, + {BQ256XX_CHARGER_CONTROL_3, 0x4c}, +}; + +static struct reg_default bq25611d_reg_defs[] = { + {BQ256XX_INPUT_CURRENT_LIMIT, 0x17}, + {BQ256XX_CHARGER_CONTROL_0, 0x1a}, + {BQ256XX_CHARGE_CURRENT_LIMIT, 0x91}, + {BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x12}, + {BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x40}, + {BQ256XX_CHARGER_CONTROL_1, 0x9e}, + {BQ256XX_CHARGER_CONTROL_2, 0xe6}, + {BQ256XX_CHARGER_CONTROL_3, 0x4c}, + {BQ256XX_PART_INFORMATION, 0x54}, + {BQ256XX_CHARGER_CONTROL_4, 0x75}, +}; + +static struct reg_default bq25618_619_reg_defs[] = { + {BQ256XX_INPUT_CURRENT_LIMIT, 0x17}, + {BQ256XX_CHARGER_CONTROL_0, 0x1a}, + {BQ256XX_CHARGE_CURRENT_LIMIT, 0x91}, + {BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x12}, + {BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x40}, + {BQ256XX_CHARGER_CONTROL_1, 0x9e}, + {BQ256XX_CHARGER_CONTROL_2, 0xe6}, + {BQ256XX_CHARGER_CONTROL_3, 0x4c}, + {BQ256XX_PART_INFORMATION, 0x2c}, + {BQ256XX_CHARGER_CONTROL_4, 0x75}, +}; + +static int bq256xx_get_state(struct bq256xx_device *bq, + struct bq256xx_state *state) +{ + unsigned int charger_status_0; + unsigned int charger_status_1; + int ret; + + ret = regmap_read(bq->regmap, BQ256XX_CHARGER_STATUS_0, + &charger_status_0); + if (ret) + return ret; + + ret = regmap_read(bq->regmap, BQ256XX_CHARGER_STATUS_1, + &charger_status_1); + if (ret) + return ret; + + state->vbus_stat = charger_status_0 & BQ256XX_VBUS_STAT_MASK; + state->chrg_stat = charger_status_0 & BQ256XX_CHRG_STAT_MASK; + state->online = charger_status_0 & BQ256XX_PG_STAT_MASK; + + state->wdt_fault = charger_status_1 & BQ256XX_WDT_FAULT_MASK; + state->bat_fault = charger_status_1 & BQ256XX_BAT_FAULT_MASK; + state->chrg_fault = charger_status_1 & BQ256XX_CHRG_FAULT_MASK; + state->ntc_fault = charger_status_1 & BQ256XX_NTC_FAULT_MASK; + + return 0; +} + +static int bq256xx_get_ichg_curr(struct bq256xx_device *bq) +{ + unsigned int charge_current_limit; + unsigned int ichg_reg_code; + int ret; + + ret = regmap_read(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT, + &charge_current_limit); + if (ret) + return ret; + + ichg_reg_code = charge_current_limit & BQ256XX_ICHG_MASK; + + return ichg_reg_code * BQ256XX_ICHG_STEP_uA; +} + +static int bq25618_619_get_ichg_curr(struct bq256xx_device *bq) +{ + unsigned int charge_current_limit; + unsigned int ichg_reg_code; + int ret; + + ret = regmap_read(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT, + &charge_current_limit); + if (ret) + return ret; + + ichg_reg_code = charge_current_limit & BQ256XX_ICHG_MASK; + + if (ichg_reg_code < BQ25618_ICHG_THRESH) + return ichg_reg_code * BQ25618_ICHG_STEP_uA; + + return bq25618_619_ichg_values[ichg_reg_code - BQ25618_ICHG_THRESH]; +} + +static int bq256xx_set_ichg_curr(struct bq256xx_device *bq, int ichg) +{ + unsigned int ichg_reg_code; + int ichg_max = bq->init_data.ichg_max; + + ichg = clamp(ichg, BQ256XX_ICHG_MIN_uA, ichg_max); + ichg_reg_code = ichg / BQ256XX_ICHG_STEP_uA; + + return regmap_update_bits(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT, + BQ256XX_ICHG_MASK, ichg_reg_code); +} + +static int bq25618_619_set_ichg_curr(struct bq256xx_device *bq, int ichg) +{ + int array_size = ARRAY_SIZE(bq25618_619_ichg_values); + unsigned int ichg_reg_code; + int ichg_max = bq->init_data.ichg_max; + + ichg = clamp(ichg, BQ25618_ICHG_MIN_uA, ichg_max); + + if (ichg <= BQ25618_ICHG_THRESH_uA) { + ichg_reg_code = ichg / BQ25618_ICHG_STEP_uA; + } else { + ichg_reg_code = bq256xx_array_parse(array_size, ichg, + bq25618_619_ichg_values) + BQ25618_ICHG_THRESH; + } + + return regmap_update_bits(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT, + BQ256XX_ICHG_MASK, ichg_reg_code); +} + +static int bq25618_619_get_chrg_volt(struct bq256xx_device *bq) +{ + unsigned int battery_volt_lim; + unsigned int vbatreg_reg_code; + int ret; + + ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT, + &battery_volt_lim); + + if (ret) + return ret; + + vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >> + BQ256XX_VBATREG_BIT_SHIFT; + + if (vbatreg_reg_code > BQ2561X_VBATREG_THRESH) + return ((vbatreg_reg_code - BQ2561X_VBATREG_THRESH) * + BQ2561X_VBATREG_STEP_uV) + + BQ25618_VBATREG_THRESH_uV; + + return bq25618_619_vbatreg_values[vbatreg_reg_code]; +} + +static int bq25611d_get_chrg_volt(struct bq256xx_device *bq) +{ + unsigned int battery_volt_lim; + unsigned int vbatreg_reg_code; + int ret; + + ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT, + &battery_volt_lim); + if (ret) + return ret; + + vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >> + BQ256XX_VBATREG_BIT_SHIFT; + + if (vbatreg_reg_code > BQ2561X_VBATREG_THRESH) + return ((vbatreg_reg_code - BQ2561X_VBATREG_THRESH) * + BQ2561X_VBATREG_STEP_uV) + + BQ25611D_VBATREG_THRESH_uV; + + return bq25611d_vbatreg_values[vbatreg_reg_code]; +} + +static int bq2560x_get_chrg_volt(struct bq256xx_device *bq) +{ + unsigned int battery_volt_lim; + unsigned int vbatreg_reg_code; + int ret; + + ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT, + &battery_volt_lim); + if (ret) + return ret; + + vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >> + BQ256XX_VBATREG_BIT_SHIFT; + + return (vbatreg_reg_code * BQ2560X_VBATREG_STEP_uV) + + BQ2560X_VBATREG_OFFSET_uV; +} + +static int bq25601d_get_chrg_volt(struct bq256xx_device *bq) +{ + unsigned int battery_volt_lim; + unsigned int vbatreg_reg_code; + int ret; + + ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT, + &battery_volt_lim); + if (ret) + return ret; + + vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >> + BQ256XX_VBATREG_BIT_SHIFT; + + return (vbatreg_reg_code * BQ2560X_VBATREG_STEP_uV) + + BQ25601D_VBATREG_OFFSET_uV; +} + +static int bq25618_619_set_chrg_volt(struct bq256xx_device *bq, int vbatreg) +{ + int array_size = ARRAY_SIZE(bq25618_619_vbatreg_values); + unsigned int vbatreg_reg_code; + int vbatreg_max = bq->init_data.vbatreg_max; + + vbatreg = clamp(vbatreg, BQ25618_VBATREG_MIN_uV, vbatreg_max); + + if (vbatreg > BQ25618_VBATREG_THRESH_uV) + vbatreg_reg_code = ((vbatreg - + BQ25618_VBATREG_THRESH_uV) / + (BQ2561X_VBATREG_STEP_uV)) + BQ2561X_VBATREG_THRESH; + else { + vbatreg_reg_code = bq256xx_array_parse(array_size, vbatreg, + bq25618_619_vbatreg_values); + } + + return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT, + BQ256XX_VBATREG_MASK, vbatreg_reg_code << + BQ256XX_VBATREG_BIT_SHIFT); +} + +static int bq25611d_set_chrg_volt(struct bq256xx_device *bq, int vbatreg) +{ + int array_size = ARRAY_SIZE(bq25611d_vbatreg_values); + unsigned int vbatreg_reg_code; + int vbatreg_max = bq->init_data.vbatreg_max; + + vbatreg = clamp(vbatreg, BQ25611D_VBATREG_MIN_uV, vbatreg_max); + + if (vbatreg > BQ25611D_VBATREG_THRESH_uV) + vbatreg_reg_code = ((vbatreg - + BQ25611D_VBATREG_THRESH_uV) / + (BQ2561X_VBATREG_STEP_uV)) + BQ2561X_VBATREG_THRESH; + else { + vbatreg_reg_code = bq256xx_array_parse(array_size, vbatreg, + bq25611d_vbatreg_values); + } + + return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT, + BQ256XX_VBATREG_MASK, vbatreg_reg_code << + BQ256XX_VBATREG_BIT_SHIFT); +} + +static int bq2560x_set_chrg_volt(struct bq256xx_device *bq, int vbatreg) +{ + unsigned int vbatreg_reg_code; + int vbatreg_max = bq->init_data.vbatreg_max; + + vbatreg = clamp(vbatreg, BQ2560X_VBATREG_MIN_uV, vbatreg_max); + + vbatreg_reg_code = (vbatreg - BQ2560X_VBATREG_OFFSET_uV) / + BQ2560X_VBATREG_STEP_uV; + + return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT, + BQ256XX_VBATREG_MASK, vbatreg_reg_code << + BQ256XX_VBATREG_BIT_SHIFT); +} + +static int bq25601d_set_chrg_volt(struct bq256xx_device *bq, int vbatreg) +{ + unsigned int vbatreg_reg_code; + int vbatreg_max = bq->init_data.vbatreg_max; + + vbatreg = clamp(vbatreg, BQ25601D_VBATREG_MIN_uV, vbatreg_max); + + vbatreg_reg_code = (vbatreg - BQ25601D_VBATREG_OFFSET_uV) / + BQ2560X_VBATREG_STEP_uV; + + return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT, + BQ256XX_VBATREG_MASK, vbatreg_reg_code << + BQ256XX_VBATREG_BIT_SHIFT); +} + +static int bq256xx_get_prechrg_curr(struct bq256xx_device *bq) +{ + unsigned int prechg_and_term_curr_lim; + unsigned int iprechg_reg_code; + int ret; + + ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM, + &prechg_and_term_curr_lim); + if (ret) + return ret; + + iprechg_reg_code = (prechg_and_term_curr_lim & BQ256XX_IPRECHG_MASK) + >> BQ256XX_IPRECHG_BIT_SHIFT; + + return (iprechg_reg_code * BQ256XX_IPRECHG_STEP_uA) + + BQ256XX_IPRECHG_OFFSET_uA; +} + +static int bq256xx_set_prechrg_curr(struct bq256xx_device *bq, int iprechg) +{ + unsigned int iprechg_reg_code; + + iprechg = clamp(iprechg, BQ256XX_IPRECHG_MIN_uA, + BQ256XX_IPRECHG_MAX_uA); + + iprechg_reg_code = ((iprechg - BQ256XX_IPRECHG_OFFSET_uA) / + BQ256XX_IPRECHG_STEP_uA) << BQ256XX_IPRECHG_BIT_SHIFT; + + return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM, + BQ256XX_IPRECHG_MASK, iprechg_reg_code); +} + +static int bq25618_619_get_prechrg_curr(struct bq256xx_device *bq) +{ + unsigned int prechg_and_term_curr_lim; + unsigned int iprechg_reg_code; + int ret; + + ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM, + &prechg_and_term_curr_lim); + if (ret) + return ret; + + iprechg_reg_code = (prechg_and_term_curr_lim & BQ256XX_IPRECHG_MASK) + >> BQ256XX_IPRECHG_BIT_SHIFT; + + return (iprechg_reg_code * BQ25618_IPRECHG_STEP_uA) + + BQ25618_IPRECHG_OFFSET_uA; +} + +static int bq25618_619_set_prechrg_curr(struct bq256xx_device *bq, int iprechg) +{ + unsigned int iprechg_reg_code; + + iprechg = clamp(iprechg, BQ25618_IPRECHG_MIN_uA, + BQ25618_IPRECHG_MAX_uA); + + iprechg_reg_code = ((iprechg - BQ25618_IPRECHG_OFFSET_uA) / + BQ25618_IPRECHG_STEP_uA) << BQ256XX_IPRECHG_BIT_SHIFT; + + return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM, + BQ256XX_IPRECHG_MASK, iprechg_reg_code); +} + +static int bq256xx_get_term_curr(struct bq256xx_device *bq) +{ + unsigned int prechg_and_term_curr_lim; + unsigned int iterm_reg_code; + int ret; + + ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM, + &prechg_and_term_curr_lim); + if (ret) + return ret; + + iterm_reg_code = prechg_and_term_curr_lim & BQ256XX_ITERM_MASK; + + return (iterm_reg_code * BQ256XX_ITERM_STEP_uA) + + BQ256XX_ITERM_OFFSET_uA; +} + +static int bq256xx_set_term_curr(struct bq256xx_device *bq, int iterm) +{ + unsigned int iterm_reg_code; + + iterm = clamp(iterm, BQ256XX_ITERM_MIN_uA, BQ256XX_ITERM_MAX_uA); + + iterm_reg_code = (iterm - BQ256XX_ITERM_OFFSET_uA) / + BQ256XX_ITERM_STEP_uA; + + return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM, + BQ256XX_ITERM_MASK, iterm_reg_code); +} + +static int bq25618_619_get_term_curr(struct bq256xx_device *bq) +{ + unsigned int prechg_and_term_curr_lim; + unsigned int iterm_reg_code; + int ret; + + ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM, + &prechg_and_term_curr_lim); + if (ret) + return ret; + + iterm_reg_code = prechg_and_term_curr_lim & BQ256XX_ITERM_MASK; + + return (iterm_reg_code * BQ25618_ITERM_STEP_uA) + + BQ25618_ITERM_OFFSET_uA; +} + +static int bq25618_619_set_term_curr(struct bq256xx_device *bq, int iterm) +{ + unsigned int iterm_reg_code; + + iterm = clamp(iterm, BQ25618_ITERM_MIN_uA, BQ25618_ITERM_MAX_uA); + + iterm_reg_code = (iterm - BQ25618_ITERM_OFFSET_uA) / + BQ25618_ITERM_STEP_uA; + + return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM, + BQ256XX_ITERM_MASK, iterm_reg_code); +} + +static int bq256xx_get_input_volt_lim(struct bq256xx_device *bq) +{ + unsigned int charger_control_2; + unsigned int vindpm_reg_code; + int ret; + + ret = regmap_read(bq->regmap, BQ256XX_CHARGER_CONTROL_2, + &charger_control_2); + if (ret) + return ret; + + vindpm_reg_code = charger_control_2 & BQ256XX_VINDPM_MASK; + + return (vindpm_reg_code * BQ256XX_VINDPM_STEP_uV) + + BQ256XX_VINDPM_OFFSET_uV; +} + +static int bq256xx_set_input_volt_lim(struct bq256xx_device *bq, int vindpm) +{ + unsigned int vindpm_reg_code; + + vindpm = clamp(vindpm, BQ256XX_VINDPM_MIN_uV, BQ256XX_VINDPM_MAX_uV); + + vindpm_reg_code = (vindpm - BQ256XX_VINDPM_OFFSET_uV) / + BQ256XX_VINDPM_STEP_uV; + + return regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_2, + BQ256XX_VINDPM_MASK, vindpm_reg_code); +} + +static int bq256xx_get_input_curr_lim(struct bq256xx_device *bq) +{ + unsigned int input_current_limit; + unsigned int iindpm_reg_code; + int ret; + + ret = regmap_read(bq->regmap, BQ256XX_INPUT_CURRENT_LIMIT, + &input_current_limit); + if (ret) + return ret; + + iindpm_reg_code = input_current_limit & BQ256XX_IINDPM_MASK; + + return (iindpm_reg_code * BQ256XX_IINDPM_STEP_uA) + + BQ256XX_IINDPM_OFFSET_uA; +} + +static int bq256xx_set_input_curr_lim(struct bq256xx_device *bq, int iindpm) +{ + unsigned int iindpm_reg_code; + + iindpm = clamp(iindpm, BQ256XX_IINDPM_MIN_uA, BQ256XX_IINDPM_MAX_uA); + + iindpm_reg_code = (iindpm - BQ256XX_IINDPM_OFFSET_uA) / + BQ256XX_IINDPM_STEP_uA; + + return regmap_update_bits(bq->regmap, BQ256XX_INPUT_CURRENT_LIMIT, + BQ256XX_IINDPM_MASK, iindpm_reg_code); +} + +static void bq256xx_charger_reset(void *data) +{ + struct bq256xx_device *bq = data; + + regmap_update_bits(bq->regmap, BQ256XX_PART_INFORMATION, + BQ256XX_REG_RST, BQ256XX_REG_RST); + + if (!IS_ERR_OR_NULL(bq->usb2_phy)) + usb_unregister_notifier(bq->usb2_phy, &bq->usb_nb); + + if (!IS_ERR_OR_NULL(bq->usb3_phy)) + usb_unregister_notifier(bq->usb3_phy, &bq->usb_nb); +} + +static int bq256xx_set_charger_property(struct power_supply *psy, + enum power_supply_property prop, + const union power_supply_propval *val) +{ + struct bq256xx_device *bq = power_supply_get_drvdata(psy); + int ret = -EINVAL; + + switch (prop) { + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = bq->chip_info->bq256xx_set_iindpm(bq, val->intval); + if (ret) + return ret; + break; + + case POWER_SUPPLY_PROP_STATUS: + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + ret = bq->chip_info->bq256xx_set_vbatreg(bq, val->intval); + if (ret) + return ret; + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + ret = bq->chip_info->bq256xx_set_ichg(bq, val->intval); + if (ret) + return ret; + break; + + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + ret = bq->chip_info->bq256xx_set_iprechg(bq, val->intval); + if (ret) + return ret; + break; + + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + ret = bq->chip_info->bq256xx_set_iterm(bq, val->intval); + if (ret) + return ret; + break; + + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + ret = bq->chip_info->bq256xx_set_vindpm(bq, val->intval); + if (ret) + return ret; + break; + + default: + break; + } + + return ret; +} + + +static int bq256xx_get_battery_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct bq256xx_device *bq = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + val->intval = bq->init_data.ichg_max; + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + val->intval = bq->init_data.vbatreg_max; + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int bq256xx_get_charger_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct bq256xx_device *bq = power_supply_get_drvdata(psy); + struct bq256xx_state state; + int ret = 0; + + mutex_lock(&bq->lock); + ret = bq256xx_get_state(bq, &state); + mutex_unlock(&bq->lock); + if (ret) + return ret; + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + if (state.vbus_stat == BQ256XX_VBUS_STAT_NO_INPUT || + state.vbus_stat == BQ256XX_VBUS_STAT_USB_OTG) + val->intval = POWER_SUPPLY_STATUS_DISCHARGING; + else if (state.chrg_stat == BQ256XX_CHRG_STAT_NOT_CHRGING) + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + else if (state.chrg_stat == BQ256XX_CHRG_STAT_CHRG_TERM) + val->intval = POWER_SUPPLY_STATUS_FULL; + else + val->intval = POWER_SUPPLY_STATUS_CHARGING; + break; + + case POWER_SUPPLY_PROP_HEALTH: + val->intval = POWER_SUPPLY_HEALTH_UNKNOWN; + if (state.wdt_fault) { + val->intval = + POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE; + } else if (state.bat_fault) { + val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + } else { + switch (state.chrg_stat) { + case BQ256XX_CHRG_FAULT_INPUT: + val->intval = + POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; + break; + case BQ256XX_CHRG_FAULT_THERM: + val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; + break; + case BQ256XX_CHRG_FAULT_CST_EXPIRE: + val->intval = + POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE; + break; + default: + break; + } + + switch (state.ntc_fault) { + case BQ256XX_NTC_FAULT_WARM: + val->intval = POWER_SUPPLY_HEALTH_WARM; + break; + case BQ256XX_NTC_FAULT_COOL: + val->intval = POWER_SUPPLY_HEALTH_COOL; + break; + case BQ256XX_NTC_FAULT_COLD: + val->intval = POWER_SUPPLY_HEALTH_COLD; + break; + case BQ256XX_NTC_FAULT_HOT: + val->intval = POWER_SUPPLY_HEALTH_HOT; + break; + default: + val->intval = POWER_SUPPLY_HEALTH_GOOD; + break; + } + } + break; + + case POWER_SUPPLY_PROP_USB_TYPE: + if (bq->chip_info->has_usb_detect) { + switch (state.vbus_stat) { + case BQ256XX_VBUS_STAT_USB_SDP: + val->intval = POWER_SUPPLY_USB_TYPE_SDP; + break; + case BQ256XX_VBUS_STAT_USB_CDP: + val->intval = POWER_SUPPLY_USB_TYPE_CDP; + break; + case BQ256XX_VBUS_STAT_USB_DCP: + val->intval = POWER_SUPPLY_USB_TYPE_DCP; + break; + case BQ256XX_VBUS_STAT_USB_OTG: + val->intval = POWER_SUPPLY_USB_TYPE_ACA; + break; + default: + val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN; + break; + } + } else { + switch (state.vbus_stat) { + case BQ256XX_VBUS_STAT_USB_SDP: + val->intval = POWER_SUPPLY_USB_TYPE_SDP; + break; + case BQ256XX_VBUS_STAT_USB_OTG: + val->intval = POWER_SUPPLY_USB_TYPE_ACA; + break; + default: + val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN; + break; + } + } + break; + + case POWER_SUPPLY_PROP_CHARGE_TYPE: + switch (state.chrg_stat) { + case BQ256XX_CHRG_STAT_NOT_CHRGING: + val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE; + break; + case BQ256XX_CHRG_STAT_PRECHRGING: + val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; + break; + case BQ256XX_CHRG_STAT_FAST_CHRGING: + val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST; + break; + case BQ256XX_CHRG_STAT_CHRG_TERM: + val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; + break; + default: + val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN; + } + break; + + case POWER_SUPPLY_PROP_MANUFACTURER: + val->strval = BQ256XX_MANUFACTURER; + break; + + case POWER_SUPPLY_PROP_MODEL_NAME: + val->strval = bq->model_name; + break; + + case POWER_SUPPLY_PROP_ONLINE: + val->intval = state.online; + break; + + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + ret = bq->chip_info->bq256xx_get_vindpm(bq); + if (ret < 0) + return ret; + val->intval = ret; + break; + + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = bq->chip_info->bq256xx_get_iindpm(bq); + if (ret < 0) + return ret; + val->intval = ret; + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + ret = bq->chip_info->bq256xx_get_vbatreg(bq); + if (ret < 0) + return ret; + val->intval = ret; + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + ret = bq->chip_info->bq256xx_get_ichg(bq); + if (ret < 0) + return ret; + val->intval = ret; + break; + + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + ret = bq->chip_info->bq256xx_get_iprechg(bq); + if (ret < 0) + return ret; + val->intval = ret; + break; + + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + ret = bq->chip_info->bq256xx_get_iterm(bq); + if (ret < 0) + return ret; + val->intval = ret; + break; + + default: + return -EINVAL; + } + + return ret; +} + +static bool bq256xx_state_changed(struct bq256xx_device *bq, + struct bq256xx_state *new_state) +{ + struct bq256xx_state old_state; + + mutex_lock(&bq->lock); + old_state = bq->state; + mutex_unlock(&bq->lock); + + return memcmp(&old_state, new_state, sizeof(struct bq256xx_state)) != 0; +} + +static irqreturn_t bq256xx_irq_handler_thread(int irq, void *private) +{ + struct bq256xx_device *bq = private; + struct bq256xx_state state; + int ret; + + ret = bq256xx_get_state(bq, &state); + if (ret < 0) + goto irq_out; + + if (!bq256xx_state_changed(bq, &state)) + goto irq_out; + + mutex_lock(&bq->lock); + bq->state = state; + mutex_unlock(&bq->lock); + + power_supply_changed(bq->charger); + +irq_out: + return IRQ_HANDLED; +} + +static enum power_supply_property bq256xx_power_supply_props[] = { + POWER_SUPPLY_PROP_MANUFACTURER, + POWER_SUPPLY_PROP_MODEL_NAME, + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT, + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, + POWER_SUPPLY_PROP_CHARGE_TYPE, + POWER_SUPPLY_PROP_USB_TYPE, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, + POWER_SUPPLY_PROP_PRECHARGE_CURRENT, + POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, +}; + +static enum power_supply_property bq256xx_battery_props[] = { + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, +}; + +static int bq256xx_property_is_writeable(struct power_supply *psy, + enum power_supply_property prop) +{ + switch (prop) { + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + case POWER_SUPPLY_PROP_STATUS: + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + return true; + default: + return false; + } +} + +static const struct power_supply_desc bq256xx_power_supply_desc = { + .name = "bq256xx-charger", + .type = POWER_SUPPLY_TYPE_USB, + .usb_types = bq256xx_usb_type, + .num_usb_types = ARRAY_SIZE(bq256xx_usb_type), + .properties = bq256xx_power_supply_props, + .num_properties = ARRAY_SIZE(bq256xx_power_supply_props), + .get_property = bq256xx_get_charger_property, + .set_property = bq256xx_set_charger_property, + .property_is_writeable = bq256xx_property_is_writeable, +}; + +static struct power_supply_desc bq256xx_battery_desc = { + .name = "bq256xx-battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .get_property = bq256xx_get_battery_property, + .properties = bq256xx_battery_props, + .num_properties = ARRAY_SIZE(bq256xx_battery_props), + .property_is_writeable = bq256xx_property_is_writeable, +}; + + +static bool bq256xx_is_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case BQ256XX_INPUT_CURRENT_LIMIT: + case BQ256XX_CHARGER_STATUS_0...BQ256XX_CHARGER_STATUS_2: + return true; + default: + return false; + } +} + +static const struct regmap_config bq25600_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = BQ256XX_PART_INFORMATION, + .reg_defaults = bq2560x_reg_defs, + .num_reg_defaults = ARRAY_SIZE(bq2560x_reg_defs), + .cache_type = REGCACHE_FLAT, + .volatile_reg = bq256xx_is_volatile_reg, +}; + +static const struct regmap_config bq25611d_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = BQ256XX_CHARGER_CONTROL_4, + .reg_defaults = bq25611d_reg_defs, + .num_reg_defaults = ARRAY_SIZE(bq25611d_reg_defs), + .cache_type = REGCACHE_FLAT, + .volatile_reg = bq256xx_is_volatile_reg, +}; + +static const struct regmap_config bq25618_619_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = BQ256XX_CHARGER_CONTROL_4, + .reg_defaults = bq25618_619_reg_defs, + .num_reg_defaults = ARRAY_SIZE(bq25618_619_reg_defs), + .cache_type = REGCACHE_FLAT, + .volatile_reg = bq256xx_is_volatile_reg, +}; + +static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = { + [BQ25600] = { + .model_id = BQ25600, + .bq256xx_regmap_config = &bq25600_regmap_config, + .bq256xx_get_ichg = bq256xx_get_ichg_curr, + .bq256xx_get_iindpm = bq256xx_get_input_curr_lim, + .bq256xx_get_vbatreg = bq2560x_get_chrg_volt, + .bq256xx_get_iterm = bq256xx_get_term_curr, + .bq256xx_get_iprechg = bq256xx_get_prechrg_curr, + .bq256xx_get_vindpm = bq256xx_get_input_volt_lim, + + .bq256xx_set_ichg = bq256xx_set_ichg_curr, + .bq256xx_set_iindpm = bq256xx_set_input_curr_lim, + .bq256xx_set_vbatreg = bq2560x_set_chrg_volt, + .bq256xx_set_iterm = bq256xx_set_term_curr, + .bq256xx_set_iprechg = bq256xx_set_prechrg_curr, + .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + + .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA, + .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, + .bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV, + .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA, + .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA, + .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV, + + .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA, + .bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV, + + .has_usb_detect = false, + }, + + [BQ25600D] = { + .model_id = BQ25600D, + .bq256xx_regmap_config = &bq25600_regmap_config, + .bq256xx_get_ichg = bq256xx_get_ichg_curr, + .bq256xx_get_iindpm = bq256xx_get_input_curr_lim, + .bq256xx_get_vbatreg = bq2560x_get_chrg_volt, + .bq256xx_get_iterm = bq256xx_get_term_curr, + .bq256xx_get_iprechg = bq256xx_get_prechrg_curr, + .bq256xx_get_vindpm = bq256xx_get_input_volt_lim, + + .bq256xx_set_ichg = bq256xx_set_ichg_curr, + .bq256xx_set_iindpm = bq256xx_set_input_curr_lim, + .bq256xx_set_vbatreg = bq2560x_set_chrg_volt, + .bq256xx_set_iterm = bq256xx_set_term_curr, + .bq256xx_set_iprechg = bq256xx_set_prechrg_curr, + .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + + .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA, + .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, + .bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV, + .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA, + .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA, + .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV, + + .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA, + .bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV, + + .has_usb_detect = true, + }, + + [BQ25601] = { + .model_id = BQ25601, + .bq256xx_regmap_config = &bq25600_regmap_config, + .bq256xx_get_ichg = bq256xx_get_ichg_curr, + .bq256xx_get_iindpm = bq256xx_get_input_curr_lim, + .bq256xx_get_vbatreg = bq2560x_get_chrg_volt, + .bq256xx_get_iterm = bq256xx_get_term_curr, + .bq256xx_get_iprechg = bq256xx_get_prechrg_curr, + .bq256xx_get_vindpm = bq256xx_get_input_volt_lim, + + .bq256xx_set_ichg = bq256xx_set_ichg_curr, + .bq256xx_set_iindpm = bq256xx_set_input_curr_lim, + .bq256xx_set_vbatreg = bq2560x_set_chrg_volt, + .bq256xx_set_iterm = bq256xx_set_term_curr, + .bq256xx_set_iprechg = bq256xx_set_prechrg_curr, + .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + + .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA, + .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, + .bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV, + .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA, + .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA, + .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV, + + .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA, + .bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV, + + .has_usb_detect = false, + }, + + [BQ25601D] = { + .model_id = BQ25601D, + .bq256xx_regmap_config = &bq25600_regmap_config, + .bq256xx_get_ichg = bq256xx_get_ichg_curr, + .bq256xx_get_iindpm = bq256xx_get_input_curr_lim, + .bq256xx_get_vbatreg = bq25601d_get_chrg_volt, + .bq256xx_get_iterm = bq256xx_get_term_curr, + .bq256xx_get_iprechg = bq256xx_get_prechrg_curr, + .bq256xx_get_vindpm = bq256xx_get_input_volt_lim, + + .bq256xx_set_ichg = bq256xx_set_ichg_curr, + .bq256xx_set_iindpm = bq256xx_set_input_curr_lim, + .bq256xx_set_vbatreg = bq25601d_set_chrg_volt, + .bq256xx_set_iterm = bq256xx_set_term_curr, + .bq256xx_set_iprechg = bq256xx_set_prechrg_curr, + .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + + .bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA, + .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, + .bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV, + .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA, + .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA, + .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV, + + .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA, + .bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV, + + .has_usb_detect = true, + }, + + [BQ25611D] = { + .model_id = BQ25611D, + .bq256xx_regmap_config = &bq25611d_regmap_config, + .bq256xx_get_ichg = bq256xx_get_ichg_curr, + .bq256xx_get_iindpm = bq256xx_get_input_curr_lim, + .bq256xx_get_vbatreg = bq25611d_get_chrg_volt, + .bq256xx_get_iterm = bq256xx_get_term_curr, + .bq256xx_get_iprechg = bq256xx_get_prechrg_curr, + .bq256xx_get_vindpm = bq256xx_get_input_volt_lim, + + .bq256xx_set_ichg = bq256xx_set_ichg_curr, + .bq256xx_set_iindpm = bq256xx_set_input_curr_lim, + .bq256xx_set_vbatreg = bq25611d_set_chrg_volt, + .bq256xx_set_iterm = bq256xx_set_term_curr, + .bq256xx_set_iprechg = bq256xx_set_prechrg_curr, + .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + + .bq256xx_def_ichg = BQ25611D_ICHG_DEF_uA, + .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, + .bq256xx_def_vbatreg = BQ25611D_VBATREG_DEF_uV, + .bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA, + .bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA, + .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV, + + .bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA, + .bq256xx_max_vbatreg = BQ25611D_VBATREG_MAX_uV, + + .has_usb_detect = true, + }, + + [BQ25618] = { + .model_id = BQ25618, + .bq256xx_regmap_config = &bq25618_619_regmap_config, + .bq256xx_get_ichg = bq25618_619_get_ichg_curr, + .bq256xx_get_iindpm = bq256xx_get_input_curr_lim, + .bq256xx_get_vbatreg = bq25618_619_get_chrg_volt, + .bq256xx_get_iterm = bq25618_619_get_term_curr, + .bq256xx_get_iprechg = bq25618_619_get_prechrg_curr, + .bq256xx_get_vindpm = bq256xx_get_input_volt_lim, + + .bq256xx_set_ichg = bq25618_619_set_ichg_curr, + .bq256xx_set_iindpm = bq256xx_set_input_curr_lim, + .bq256xx_set_vbatreg = bq25618_619_set_chrg_volt, + .bq256xx_set_iterm = bq25618_619_set_term_curr, + .bq256xx_set_iprechg = bq25618_619_set_prechrg_curr, + .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + + .bq256xx_def_ichg = BQ25618_ICHG_DEF_uA, + .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, + .bq256xx_def_vbatreg = BQ25618_VBATREG_DEF_uV, + .bq256xx_def_iterm = BQ25618_ITERM_DEF_uA, + .bq256xx_def_iprechg = BQ25618_IPRECHG_DEF_uA, + .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV, + + .bq256xx_max_ichg = BQ25618_ICHG_MAX_uA, + .bq256xx_max_vbatreg = BQ25618_VBATREG_MAX_uV, + + .has_usb_detect = false, + }, + + [BQ25619] = { + .model_id = BQ25619, + .bq256xx_regmap_config = &bq25618_619_regmap_config, + .bq256xx_get_ichg = bq25618_619_get_ichg_curr, + .bq256xx_get_iindpm = bq256xx_get_input_curr_lim, + .bq256xx_get_vbatreg = bq25618_619_get_chrg_volt, + .bq256xx_get_iterm = bq25618_619_get_term_curr, + .bq256xx_get_iprechg = bq25618_619_get_prechrg_curr, + .bq256xx_get_vindpm = bq256xx_get_input_volt_lim, + + .bq256xx_set_ichg = bq25618_619_set_ichg_curr, + .bq256xx_set_iindpm = bq256xx_set_input_curr_lim, + .bq256xx_set_vbatreg = bq25618_619_set_chrg_volt, + .bq256xx_set_iterm = bq25618_619_set_term_curr, + .bq256xx_set_iprechg = bq25618_619_set_prechrg_curr, + .bq256xx_set_vindpm = bq256xx_set_input_volt_lim, + + .bq256xx_def_ichg = BQ25618_ICHG_DEF_uA, + .bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA, + .bq256xx_def_vbatreg = BQ25618_VBATREG_DEF_uV, + .bq256xx_def_iterm = BQ25618_ITERM_DEF_uA, + .bq256xx_def_iprechg = BQ25618_IPRECHG_DEF_uA, + .bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV, + + .bq256xx_max_ichg = BQ25618_ICHG_MAX_uA, + .bq256xx_max_vbatreg = BQ25618_VBATREG_MAX_uV, + + .has_usb_detect = false, + }, +}; + +static int bq256xx_power_supply_init(struct bq256xx_device *bq, + struct power_supply_config *psy_cfg, struct device *dev) +{ + bq->charger = devm_power_supply_register(bq->dev, + &bq256xx_power_supply_desc, + psy_cfg); + if (IS_ERR(bq->charger)) { + dev_err(dev, "power supply register charger failed\n"); + return PTR_ERR(bq->charger); + } + + bq->battery = devm_power_supply_register(bq->dev, + &bq256xx_battery_desc, + psy_cfg); + if (IS_ERR(bq->battery)) { + dev_err(dev, "power supply register battery failed\n"); + return PTR_ERR(bq->battery); + } + return 0; +} + +static int bq256xx_hw_init(struct bq256xx_device *bq) +{ + struct power_supply_battery_info bat_info = { }; + int wd_reg_val = BQ256XX_WATCHDOG_DIS; + int ret = 0; + int i; + + for (i = 0; i < BQ256XX_NUM_WD_VAL; i++) { + if (bq->watchdog_timer == bq256xx_watchdog_time[i]) { + wd_reg_val = i; + break; + } + if (bq->watchdog_timer > bq256xx_watchdog_time[i] && + bq->watchdog_timer < bq256xx_watchdog_time[i + 1]) + wd_reg_val = i; + } + ret = regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_1, + BQ256XX_WATCHDOG_MASK, wd_reg_val << + BQ256XX_WDT_BIT_SHIFT); + + ret = power_supply_get_battery_info(bq->charger, &bat_info); + if (ret) { + dev_warn(bq->dev, "battery info missing, default values will be applied\n"); + + bat_info.constant_charge_current_max_ua = + bq->chip_info->bq256xx_def_ichg; + + bat_info.constant_charge_voltage_max_uv = + bq->chip_info->bq256xx_def_vbatreg; + + bat_info.precharge_current_ua = + bq->chip_info->bq256xx_def_iprechg; + + bat_info.charge_term_current_ua = + bq->chip_info->bq256xx_def_iterm; + + bq->init_data.ichg_max = + bq->chip_info->bq256xx_max_ichg; + + bq->init_data.vbatreg_max = + bq->chip_info->bq256xx_max_vbatreg; + } else { + bq->init_data.ichg_max = + bat_info.constant_charge_current_max_ua; + + bq->init_data.vbatreg_max = + bat_info.constant_charge_voltage_max_uv; + } + + ret = bq->chip_info->bq256xx_set_vindpm(bq, bq->init_data.vindpm); + if (ret) + return ret; + + ret = bq->chip_info->bq256xx_set_iindpm(bq, bq->init_data.iindpm); + if (ret) + return ret; + + ret = bq->chip_info->bq256xx_set_ichg(bq, + bat_info.constant_charge_current_max_ua); + if (ret) + return ret; + + ret = bq->chip_info->bq256xx_set_iprechg(bq, + bat_info.precharge_current_ua); + if (ret) + return ret; + + ret = bq->chip_info->bq256xx_set_vbatreg(bq, + bat_info.constant_charge_voltage_max_uv); + if (ret) + return ret; + + ret = bq->chip_info->bq256xx_set_iterm(bq, + bat_info.charge_term_current_ua); + if (ret) + return ret; + + power_supply_put_battery_info(bq->charger, &bat_info); + + return 0; +} + +static int bq256xx_parse_dt(struct bq256xx_device *bq, + struct power_supply_config *psy_cfg, struct device *dev) +{ + int ret = 0; + + psy_cfg->drv_data = bq; + psy_cfg->of_node = dev->of_node; + + ret = device_property_read_u32(bq->dev, "ti,watchdog-timeout-ms", + &bq->watchdog_timer); + if (ret) + bq->watchdog_timer = BQ256XX_WATCHDOG_DIS; + + if (bq->watchdog_timer > BQ256XX_WATCHDOG_MAX || + bq->watchdog_timer < BQ256XX_WATCHDOG_DIS) + return -EINVAL; + + ret = device_property_read_u32(bq->dev, + "input-voltage-limit-microvolt", + &bq->init_data.vindpm); + if (ret) + bq->init_data.vindpm = bq->chip_info->bq256xx_def_vindpm; + + ret = device_property_read_u32(bq->dev, + "input-current-limit-microamp", + &bq->init_data.iindpm); + if (ret) + bq->init_data.iindpm = bq->chip_info->bq256xx_def_iindpm; + + return 0; +} + +static int bq256xx_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct bq256xx_device *bq; + struct power_supply_config psy_cfg = { }; + + int ret; + + bq = devm_kzalloc(dev, sizeof(*bq), GFP_KERNEL); + if (!bq) + return -ENOMEM; + + bq->client = client; + bq->dev = dev; + bq->chip_info = &bq256xx_chip_info_tbl[id->driver_data]; + + mutex_init(&bq->lock); + + strncpy(bq->model_name, id->name, I2C_NAME_SIZE); + + bq->regmap = devm_regmap_init_i2c(client, + bq->chip_info->bq256xx_regmap_config); + + if (IS_ERR(bq->regmap)) { + dev_err(dev, "Failed to allocate register map\n"); + return PTR_ERR(bq->regmap); + } + + i2c_set_clientdata(client, bq); + + ret = bq256xx_parse_dt(bq, &psy_cfg, dev); + if (ret) { + dev_err(dev, "Failed to read device tree properties%d\n", ret); + return ret; + } + + ret = devm_add_action_or_reset(dev, bq256xx_charger_reset, bq); + if (ret) + return ret; + + /* OTG reporting */ + bq->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + if (!IS_ERR_OR_NULL(bq->usb2_phy)) { + INIT_WORK(&bq->usb_work, bq256xx_usb_work); + bq->usb_nb.notifier_call = bq256xx_usb_notifier; + usb_register_notifier(bq->usb2_phy, &bq->usb_nb); + } + + bq->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3); + if (!IS_ERR_OR_NULL(bq->usb3_phy)) { + INIT_WORK(&bq->usb_work, bq256xx_usb_work); + bq->usb_nb.notifier_call = bq256xx_usb_notifier; + usb_register_notifier(bq->usb3_phy, &bq->usb_nb); + } + + if (client->irq) { + ret = devm_request_threaded_irq(dev, client->irq, NULL, + bq256xx_irq_handler_thread, + IRQF_TRIGGER_FALLING | + IRQF_ONESHOT, + dev_name(&client->dev), bq); + if (ret < 0) { + dev_err(dev, "get irq fail: %d\n", ret); + return ret; + } + } + + ret = bq256xx_power_supply_init(bq, &psy_cfg, dev); + if (ret) { + dev_err(dev, "Failed to register power supply\n"); + return ret; + } + + ret = bq256xx_hw_init(bq); + if (ret) { + dev_err(dev, "Cannot initialize the chip.\n"); + return ret; + } + + return ret; +} + +static const struct i2c_device_id bq256xx_i2c_ids[] = { + { "bq25600", BQ25600 }, + { "bq25600d", BQ25600D }, + { "bq25601", BQ25601 }, + { "bq25601d", BQ25601D }, + { "bq25611d", BQ25611D }, + { "bq25618", BQ25618 }, + { "bq25619", BQ25619 }, + {}, +}; +MODULE_DEVICE_TABLE(i2c, bq256xx_i2c_ids); + +static const struct of_device_id bq256xx_of_match[] = { + { .compatible = "ti,bq25600", .data = (void *)BQ25600 }, + { .compatible = "ti,bq25600d", .data = (void *)BQ25600D }, + { .compatible = "ti,bq25601", .data = (void *)BQ25601 }, + { .compatible = "ti,bq25601d", .data = (void *)BQ25601D }, + { .compatible = "ti,bq25611d", .data = (void *)BQ25611D }, + { .compatible = "ti,bq25618", .data = (void *)BQ25618 }, + { .compatible = "ti,bq25619", .data = (void *)BQ25619 }, + { }, +}; +MODULE_DEVICE_TABLE(of, bq256xx_of_match); + +static const struct acpi_device_id bq256xx_acpi_match[] = { + { "bq25600", BQ25600 }, + { "bq25600d", BQ25600D }, + { "bq25601", BQ25601 }, + { "bq25601d", BQ25601D }, + { "bq25611d", BQ25611D }, + { "bq25618", BQ25618 }, + { "bq25619", BQ25619 }, + {}, +}; +MODULE_DEVICE_TABLE(acpi, bq256xx_acpi_match); + +static struct i2c_driver bq256xx_driver = { + .driver = { + .name = "bq256xx-charger", + .of_match_table = bq256xx_of_match, + .acpi_match_table = bq256xx_acpi_match, + }, + .probe = bq256xx_probe, + .id_table = bq256xx_i2c_ids, +}; +module_i2c_driver(bq256xx_driver); + +MODULE_AUTHOR("Ricardo Rivera-Matos <r-rivera-matos@ti.com>"); +MODULE_DESCRIPTION("bq256xx charger driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/power/supply/bq25980_charger.c b/drivers/power/supply/bq25980_charger.c index c936f311eb4f..530ff4025b31 100644 --- a/drivers/power/supply/bq25980_charger.c +++ b/drivers/power/supply/bq25980_charger.c @@ -1285,7 +1285,7 @@ static int bq25980_probe(struct i2c_client *client, static const struct i2c_device_id bq25980_i2c_ids[] = { { "bq25980", BQ25980 }, { "bq25975", BQ25975 }, - { "bq25975", BQ25975 }, + { "bq25960", BQ25960 }, {}, }; MODULE_DEVICE_TABLE(i2c, bq25980_i2c_ids); diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c index 315e0909e6a4..4c4a7b1c64c5 100644 --- a/drivers/power/supply/bq27xxx_battery.c +++ b/drivers/power/supply/bq27xxx_battery.c @@ -110,6 +110,7 @@ enum bq27xxx_reg_index { BQ27XXX_REG_TTES, /* Time-to-Empty Standby */ BQ27XXX_REG_TTECP, /* Time-to-Empty at Constant Power */ BQ27XXX_REG_NAC, /* Nominal Available Capacity */ + BQ27XXX_REG_RC, /* Remaining Capacity */ BQ27XXX_REG_FCC, /* Full Charge Capacity */ BQ27XXX_REG_CYCT, /* Cycle Count */ BQ27XXX_REG_AE, /* Available Energy */ @@ -145,6 +146,7 @@ static u8 [BQ27XXX_REG_TTES] = 0x1c, [BQ27XXX_REG_TTECP] = 0x26, [BQ27XXX_REG_NAC] = 0x0c, + [BQ27XXX_REG_RC] = INVALID_REG_ADDR, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = 0x2a, [BQ27XXX_REG_AE] = 0x22, @@ -169,6 +171,7 @@ static u8 [BQ27XXX_REG_TTES] = 0x1c, [BQ27XXX_REG_TTECP] = 0x26, [BQ27XXX_REG_NAC] = 0x0c, + [BQ27XXX_REG_RC] = INVALID_REG_ADDR, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = 0x2a, [BQ27XXX_REG_AE] = INVALID_REG_ADDR, @@ -193,6 +196,7 @@ static u8 [BQ27XXX_REG_TTES] = 0x1a, [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, [BQ27XXX_REG_NAC] = 0x0c, + [BQ27XXX_REG_RC] = 0x10, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = 0x2a, [BQ27XXX_REG_AE] = INVALID_REG_ADDR, @@ -215,6 +219,7 @@ static u8 [BQ27XXX_REG_TTES] = 0x1c, [BQ27XXX_REG_TTECP] = 0x26, [BQ27XXX_REG_NAC] = 0x0c, + [BQ27XXX_REG_RC] = 0x10, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = 0x2a, [BQ27XXX_REG_AE] = 0x22, @@ -237,6 +242,7 @@ static u8 [BQ27XXX_REG_TTES] = 0x1a, [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, [BQ27XXX_REG_NAC] = 0x0c, + [BQ27XXX_REG_RC] = 0x10, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = 0x1e, [BQ27XXX_REG_AE] = INVALID_REG_ADDR, @@ -257,6 +263,7 @@ static u8 [BQ27XXX_REG_TTES] = 0x1c, [BQ27XXX_REG_TTECP] = 0x26, [BQ27XXX_REG_NAC] = 0x0c, + [BQ27XXX_REG_RC] = 0x10, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR, [BQ27XXX_REG_AE] = 0x22, @@ -277,6 +284,7 @@ static u8 [BQ27XXX_REG_TTES] = 0x1c, [BQ27XXX_REG_TTECP] = 0x26, [BQ27XXX_REG_NAC] = 0x0c, + [BQ27XXX_REG_RC] = 0x10, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = 0x2a, [BQ27XXX_REG_AE] = 0x22, @@ -297,6 +305,7 @@ static u8 [BQ27XXX_REG_TTES] = 0x1c, [BQ27XXX_REG_TTECP] = 0x26, [BQ27XXX_REG_NAC] = 0x0c, + [BQ27XXX_REG_RC] = 0x10, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = 0x2a, [BQ27XXX_REG_AE] = 0x22, @@ -317,6 +326,7 @@ static u8 [BQ27XXX_REG_TTES] = 0x1c, [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, [BQ27XXX_REG_NAC] = 0x0c, + [BQ27XXX_REG_RC] = 0x10, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = 0x1e, [BQ27XXX_REG_AE] = INVALID_REG_ADDR, @@ -337,6 +347,7 @@ static u8 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, + [BQ27XXX_REG_RC] = INVALID_REG_ADDR, [BQ27XXX_REG_FCC] = INVALID_REG_ADDR, [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR, [BQ27XXX_REG_AE] = INVALID_REG_ADDR, @@ -361,6 +372,7 @@ static u8 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, [BQ27XXX_REG_NAC] = 0x0c, + [BQ27XXX_REG_RC] = 0x10, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = 0x2a, [BQ27XXX_REG_AE] = INVALID_REG_ADDR, @@ -382,6 +394,7 @@ static u8 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, [BQ27XXX_REG_NAC] = 0x0c, + [BQ27XXX_REG_RC] = 0x10, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = 0x2a, [BQ27XXX_REG_AE] = INVALID_REG_ADDR, @@ -405,6 +418,7 @@ static u8 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, [BQ27XXX_REG_NAC] = 0x0c, + [BQ27XXX_REG_RC] = 0x10, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = 0x2a, [BQ27XXX_REG_AE] = INVALID_REG_ADDR, @@ -425,6 +439,7 @@ static u8 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, [BQ27XXX_REG_NAC] = 0x08, + [BQ27XXX_REG_RC] = 0x0c, [BQ27XXX_REG_FCC] = 0x0e, [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR, [BQ27XXX_REG_AE] = INVALID_REG_ADDR, @@ -450,6 +465,7 @@ static u8 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, + [BQ27XXX_REG_RC] = 0x10, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = 0x2a, [BQ27XXX_REG_AE] = 0x22, @@ -470,6 +486,7 @@ static u8 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, + [BQ27XXX_REG_RC] = 0x10, [BQ27XXX_REG_FCC] = 0x12, [BQ27XXX_REG_CYCT] = 0x2a, [BQ27XXX_REG_AE] = 0x22, @@ -490,6 +507,7 @@ static u8 [BQ27XXX_REG_TTES] = 0x1e, [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, + [BQ27XXX_REG_RC] = 0x04, [BQ27XXX_REG_FCC] = 0x06, [BQ27XXX_REG_CYCT] = 0x2c, [BQ27XXX_REG_AE] = 0x24, @@ -745,6 +763,7 @@ static enum power_supply_property bq27z561_props[] = { POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, POWER_SUPPLY_PROP_TECHNOLOGY, POWER_SUPPLY_PROP_CHARGE_FULL, + POWER_SUPPLY_PROP_CHARGE_NOW, POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, POWER_SUPPLY_PROP_CYCLE_COUNT, POWER_SUPPLY_PROP_POWER_AVG, @@ -764,6 +783,7 @@ static enum power_supply_property bq28z610_props[] = { POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, POWER_SUPPLY_PROP_TECHNOLOGY, POWER_SUPPLY_PROP_CHARGE_FULL, + POWER_SUPPLY_PROP_CHARGE_NOW, POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, POWER_SUPPLY_PROP_CYCLE_COUNT, POWER_SUPPLY_PROP_POWER_AVG, @@ -784,6 +804,7 @@ static enum power_supply_property bq34z100_props[] = { POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, POWER_SUPPLY_PROP_TECHNOLOGY, POWER_SUPPLY_PROP_CHARGE_FULL, + POWER_SUPPLY_PROP_CHARGE_NOW, POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, POWER_SUPPLY_PROP_CYCLE_COUNT, POWER_SUPPLY_PROP_ENERGY_NOW, @@ -1519,6 +1540,15 @@ static inline int bq27xxx_battery_read_nac(struct bq27xxx_device_info *di) } /* + * Return the battery Remaining Capacity in µAh + * Or < 0 if something fails. + */ +static inline int bq27xxx_battery_read_rc(struct bq27xxx_device_info *di) +{ + return bq27xxx_battery_read_charge(di, BQ27XXX_REG_RC); +} + +/* * Return the battery Full Charge Capacity in µAh * Or < 0 if something fails. */ @@ -1789,7 +1819,7 @@ static int bq27xxx_battery_current(struct bq27xxx_device_info *di, if (di->opts & BQ27XXX_O_ZERO) { flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, true); - if (flags & BQ27000_FLAG_CHGS) { + if (!(flags & BQ27000_FLAG_CHGS)) { dev_dbg(di->dev, "negative current!\n"); curr = -curr; } @@ -1797,7 +1827,7 @@ static int bq27xxx_battery_current(struct bq27xxx_device_info *di, val->intval = curr * BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS; } else { /* Other gauges return signed value */ - val->intval = (int)((s16)curr) * 1000; + val->intval = -(int)((s16)curr) * 1000; } return 0; @@ -1965,7 +1995,10 @@ static int bq27xxx_battery_get_property(struct power_supply *psy, val->intval = POWER_SUPPLY_TECHNOLOGY_LION; break; case POWER_SUPPLY_PROP_CHARGE_NOW: - ret = bq27xxx_simple_value(bq27xxx_battery_read_nac(di), val); + if (di->regs[BQ27XXX_REG_NAC] != INVALID_REG_ADDR) + ret = bq27xxx_simple_value(bq27xxx_battery_read_nac(di), val); + else + ret = bq27xxx_simple_value(bq27xxx_battery_read_rc(di), val); break; case POWER_SUPPLY_PROP_CHARGE_FULL: ret = bq27xxx_simple_value(di->cache.charge_full, val); diff --git a/drivers/power/supply/charger-manager.c b/drivers/power/supply/charger-manager.c index 6fcebe441552..4dea8ecd70bc 100644 --- a/drivers/power/supply/charger-manager.c +++ b/drivers/power/supply/charger-manager.c @@ -570,7 +570,7 @@ static int cm_get_target_status(struct charger_manager *cm) return POWER_SUPPLY_STATUS_DISCHARGING; if (cm_check_thermal_status(cm)) { - /* Check if discharging duration exeeds limit. */ + /* Check if discharging duration exceeds limit. */ if (check_charging_duration(cm)) goto charging_ok; return POWER_SUPPLY_STATUS_NOT_CHARGING; @@ -578,7 +578,7 @@ static int cm_get_target_status(struct charger_manager *cm) switch (cm->battery_status) { case POWER_SUPPLY_STATUS_CHARGING: - /* Check if charging duration exeeds limit. */ + /* Check if charging duration exceeds limit. */ if (check_charging_duration(cm)) return POWER_SUPPLY_STATUS_FULL; fallthrough; @@ -723,9 +723,9 @@ static int charger_get_property(struct power_supply *psy, val->intval = cm->battery_status; break; case POWER_SUPPLY_PROP_HEALTH: - if (cm->emergency_stop > 0) + if (cm->emergency_stop == CM_BATT_OVERHEAT) val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; - else if (cm->emergency_stop < 0) + else if (cm->emergency_stop == CM_BATT_COLD) val->intval = POWER_SUPPLY_HEALTH_COLD; else val->intval = POWER_SUPPLY_HEALTH_GOOD; diff --git a/drivers/power/supply/cpcap-battery.c b/drivers/power/supply/cpcap-battery.c index 295611b3b15e..6d5bcdb9f45d 100644 --- a/drivers/power/supply/cpcap-battery.c +++ b/drivers/power/supply/cpcap-battery.c @@ -3,7 +3,7 @@ * * Copyright (C) 2017 Tony Lindgren <tony@atomide.com> * - * Some parts of the code based on earlie Motorola mapphone Linux kernel + * Some parts of the code based on earlier Motorola mapphone Linux kernel * drivers: * * Copyright (C) 2009-2010 Motorola, Inc. @@ -28,6 +28,7 @@ #include <linux/power_supply.h> #include <linux/reboot.h> #include <linux/regmap.h> +#include <linux/moduleparam.h> #include <linux/iio/consumer.h> #include <linux/iio/types.h> @@ -110,6 +111,8 @@ struct cpcap_coulomb_counter_data { enum cpcap_battery_state { CPCAP_BATTERY_STATE_PREVIOUS, CPCAP_BATTERY_STATE_LATEST, + CPCAP_BATTERY_STATE_EMPTY, + CPCAP_BATTERY_STATE_FULL, CPCAP_BATTERY_STATE_NR, }; @@ -132,12 +135,17 @@ struct cpcap_battery_ddata { struct cpcap_battery_state_data state[CPCAP_BATTERY_STATE_NR]; u32 cc_lsb; /* μAms per LSB */ atomic_t active; + int charge_full; int status; u16 vendor; + unsigned int is_full:1; }; #define CPCAP_NO_BATTERY -400 +static bool ignore_temperature_probe; +module_param(ignore_temperature_probe, bool, 0660); + static struct cpcap_battery_state_data * cpcap_battery_get_state(struct cpcap_battery_ddata *ddata, enum cpcap_battery_state state) @@ -160,6 +168,18 @@ cpcap_battery_previous(struct cpcap_battery_ddata *ddata) return cpcap_battery_get_state(ddata, CPCAP_BATTERY_STATE_PREVIOUS); } +static struct cpcap_battery_state_data * +cpcap_battery_get_empty(struct cpcap_battery_ddata *ddata) +{ + return cpcap_battery_get_state(ddata, CPCAP_BATTERY_STATE_EMPTY); +} + +static struct cpcap_battery_state_data * +cpcap_battery_get_full(struct cpcap_battery_ddata *ddata) +{ + return cpcap_battery_get_state(ddata, CPCAP_BATTERY_STATE_FULL); +} + static int cpcap_charger_battery_temperature(struct cpcap_battery_ddata *ddata, int *value) { @@ -169,7 +189,8 @@ static int cpcap_charger_battery_temperature(struct cpcap_battery_ddata *ddata, channel = ddata->channels[CPCAP_BATTERY_IIO_BATTDET]; error = iio_read_channel_processed(channel, value); if (error < 0) { - dev_warn(ddata->dev, "%s failed: %i\n", __func__, error); + if (!ignore_temperature_probe) + dev_warn(ddata->dev, "%s failed: %i\n", __func__, error); *value = CPCAP_NO_BATTERY; return error; @@ -366,20 +387,81 @@ static int cpcap_battery_cc_get_avg_current(struct cpcap_battery_ddata *ddata) return cpcap_battery_cc_to_ua(ddata, sample, acc, offset); } +static int cpcap_battery_get_charger_status(struct cpcap_battery_ddata *ddata, + int *val) +{ + union power_supply_propval prop; + struct power_supply *charger; + int error; + + charger = power_supply_get_by_name("usb"); + if (!charger) + return -ENODEV; + + error = power_supply_get_property(charger, POWER_SUPPLY_PROP_STATUS, + &prop); + if (error) + *val = POWER_SUPPLY_STATUS_UNKNOWN; + else + *val = prop.intval; + + power_supply_put(charger); + + return error; +} + static bool cpcap_battery_full(struct cpcap_battery_ddata *ddata) { struct cpcap_battery_state_data *state = cpcap_battery_latest(ddata); + unsigned int vfull; + int error, val; + + error = cpcap_battery_get_charger_status(ddata, &val); + if (!error) { + switch (val) { + case POWER_SUPPLY_STATUS_DISCHARGING: + dev_dbg(ddata->dev, "charger disconnected\n"); + ddata->is_full = 0; + break; + case POWER_SUPPLY_STATUS_FULL: + dev_dbg(ddata->dev, "charger full status\n"); + ddata->is_full = 1; + break; + default: + break; + } + } + + /* + * The full battery voltage here can be inaccurate, it's used just to + * filter out any trickle charging events. We clear the is_full status + * on charger disconnect above anyways. + */ + vfull = ddata->config.bat.constant_charge_voltage_max_uv - 120000; + + if (ddata->is_full && state->voltage < vfull) + ddata->is_full = 0; + + return ddata->is_full; +} + +static bool cpcap_battery_low(struct cpcap_battery_ddata *ddata) +{ + struct cpcap_battery_state_data *state = cpcap_battery_latest(ddata); + static bool is_low; - if (state->voltage >= - (ddata->config.bat.constant_charge_voltage_max_uv - 18000)) - return true; + if (state->current_ua > 0 && (state->voltage <= 3350000 || is_low)) + is_low = true; + else + is_low = false; - return false; + return is_low; } static int cpcap_battery_update_status(struct cpcap_battery_ddata *ddata) { - struct cpcap_battery_state_data state, *latest, *previous; + struct cpcap_battery_state_data state, *latest, *previous, + *empty, *full; ktime_t now; int error; @@ -408,9 +490,47 @@ static int cpcap_battery_update_status(struct cpcap_battery_ddata *ddata) memcpy(previous, latest, sizeof(*previous)); memcpy(latest, &state, sizeof(*latest)); + if (cpcap_battery_full(ddata)) { + full = cpcap_battery_get_full(ddata); + memcpy(full, latest, sizeof(*full)); + + empty = cpcap_battery_get_empty(ddata); + if (empty->voltage && empty->voltage != -1) { + empty->voltage = -1; + ddata->charge_full = + empty->counter_uah - full->counter_uah; + } else if (ddata->charge_full) { + empty->voltage = -1; + empty->counter_uah = + full->counter_uah + ddata->charge_full; + } + } else if (cpcap_battery_low(ddata)) { + empty = cpcap_battery_get_empty(ddata); + memcpy(empty, latest, sizeof(*empty)); + + full = cpcap_battery_get_full(ddata); + if (full->voltage) { + full->voltage = 0; + ddata->charge_full = + empty->counter_uah - full->counter_uah; + } + } + return 0; } +/* + * Update battery status when cpcap-charger calls power_supply_changed(). + * This allows us to detect battery full condition before the charger + * disconnects. + */ +static void cpcap_battery_external_power_changed(struct power_supply *psy) +{ + union power_supply_propval prop; + + power_supply_get_property(psy, POWER_SUPPLY_PROP_STATUS, &prop); +} + static enum power_supply_property cpcap_battery_props[] = { POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_PRESENT, @@ -421,10 +541,13 @@ static enum power_supply_property cpcap_battery_props[] = { POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, POWER_SUPPLY_PROP_CURRENT_AVG, POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CHARGE_FULL, + POWER_SUPPLY_PROP_CHARGE_NOW, POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, POWER_SUPPLY_PROP_CHARGE_COUNTER, POWER_SUPPLY_PROP_POWER_NOW, POWER_SUPPLY_PROP_POWER_AVG, + POWER_SUPPLY_PROP_CAPACITY, POWER_SUPPLY_PROP_CAPACITY_LEVEL, POWER_SUPPLY_PROP_SCOPE, POWER_SUPPLY_PROP_TEMP, @@ -435,7 +558,7 @@ static int cpcap_battery_get_property(struct power_supply *psy, union power_supply_propval *val) { struct cpcap_battery_ddata *ddata = power_supply_get_drvdata(psy); - struct cpcap_battery_state_data *latest, *previous; + struct cpcap_battery_state_data *latest, *previous, *empty; u32 sample; s32 accumulator; int cached; @@ -450,7 +573,7 @@ static int cpcap_battery_get_property(struct power_supply *psy, switch (psp) { case POWER_SUPPLY_PROP_PRESENT: - if (latest->temperature > CPCAP_NO_BATTERY) + if (latest->temperature > CPCAP_NO_BATTERY || ignore_temperature_probe) val->intval = 1; else val->intval = 0; @@ -515,6 +638,16 @@ static int cpcap_battery_get_property(struct power_supply *psy, tmp *= ((latest->voltage + previous->voltage) / 20000); val->intval = div64_s64(tmp, 100); break; + case POWER_SUPPLY_PROP_CAPACITY: + empty = cpcap_battery_get_empty(ddata); + if (!empty->voltage || !ddata->charge_full) + return -ENODATA; + /* (ddata->charge_full / 200) is needed for rounding */ + val->intval = empty->counter_uah - latest->counter_uah + + ddata->charge_full / 200; + val->intval = clamp(val->intval, 0, ddata->charge_full); + val->intval = val->intval * 100 / ddata->charge_full; + break; case POWER_SUPPLY_PROP_CAPACITY_LEVEL: if (cpcap_battery_full(ddata)) val->intval = POWER_SUPPLY_CAPACITY_LEVEL_FULL; @@ -529,6 +662,21 @@ static int cpcap_battery_get_property(struct power_supply *psy, else val->intval = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; break; + case POWER_SUPPLY_PROP_CHARGE_NOW: + empty = cpcap_battery_get_empty(ddata); + if (!empty->voltage) + return -ENODATA; + val->intval = empty->counter_uah - latest->counter_uah; + if (val->intval < 0) + val->intval = 0; + else if (ddata->charge_full && ddata->charge_full < val->intval) + val->intval = ddata->charge_full; + break; + case POWER_SUPPLY_PROP_CHARGE_FULL: + if (!ddata->charge_full) + return -ENODATA; + val->intval = ddata->charge_full; + break; case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: val->intval = ddata->config.info.charge_full_design; break; @@ -536,6 +684,8 @@ static int cpcap_battery_get_property(struct power_supply *psy, val->intval = POWER_SUPPLY_SCOPE_SYSTEM; break; case POWER_SUPPLY_PROP_TEMP: + if (ignore_temperature_probe) + return -ENODATA; val->intval = latest->temperature; break; default: @@ -561,17 +711,21 @@ static int cpcap_battery_update_charger(struct cpcap_battery_ddata *ddata, POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, &prop); if (error) - return error; + goto out_put; /* Allow charger const voltage lower than battery const voltage */ if (const_charge_voltage > prop.intval) - return 0; + goto out_put; val.intval = const_charge_voltage; - return power_supply_set_property(charger, + error = power_supply_set_property(charger, POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, &val); +out_put: + power_supply_put(charger); + + return error; } static int cpcap_battery_set_property(struct power_supply *psy, @@ -590,6 +744,15 @@ static int cpcap_battery_set_property(struct power_supply *psy, ddata->config.bat.constant_charge_voltage_max_uv = val->intval; return cpcap_battery_update_charger(ddata, val->intval); + case POWER_SUPPLY_PROP_CHARGE_FULL: + if (val->intval < 0) + return -EINVAL; + if (val->intval > ddata->config.info.charge_full_design) + return -EINVAL; + + ddata->charge_full = val->intval; + + return 0; default: return -EINVAL; } @@ -602,6 +765,7 @@ static int cpcap_battery_property_is_writeable(struct power_supply *psy, { switch (psp) { case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + case POWER_SUPPLY_PROP_CHARGE_FULL: return 1; default: return 0; @@ -666,7 +830,7 @@ static int cpcap_battery_init_irq(struct platform_device *pdev, error = devm_request_threaded_irq(ddata->dev, irq, NULL, cpcap_battery_irq_thread, - IRQF_SHARED, + IRQF_SHARED | IRQF_ONESHOT, name, ddata); if (error) { dev_err(ddata->dev, "could not get irq %s: %i\n", @@ -835,9 +999,19 @@ static const struct of_device_id cpcap_battery_id_table[] = { MODULE_DEVICE_TABLE(of, cpcap_battery_id_table); #endif +static const struct power_supply_desc cpcap_charger_battery_desc = { + .name = "battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .properties = cpcap_battery_props, + .num_properties = ARRAY_SIZE(cpcap_battery_props), + .get_property = cpcap_battery_get_property, + .set_property = cpcap_battery_set_property, + .property_is_writeable = cpcap_battery_property_is_writeable, + .external_power_changed = cpcap_battery_external_power_changed, +}; + static int cpcap_battery_probe(struct platform_device *pdev) { - struct power_supply_desc *psy_desc; struct cpcap_battery_ddata *ddata; const struct of_device_id *match; struct power_supply_config psy_cfg = {}; @@ -892,22 +1066,11 @@ static int cpcap_battery_probe(struct platform_device *pdev) if (error) return error; - psy_desc = devm_kzalloc(ddata->dev, sizeof(*psy_desc), GFP_KERNEL); - if (!psy_desc) - return -ENOMEM; - - psy_desc->name = "battery"; - psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; - psy_desc->properties = cpcap_battery_props; - psy_desc->num_properties = ARRAY_SIZE(cpcap_battery_props); - psy_desc->get_property = cpcap_battery_get_property; - psy_desc->set_property = cpcap_battery_set_property; - psy_desc->property_is_writeable = cpcap_battery_property_is_writeable; - psy_cfg.of_node = pdev->dev.of_node; psy_cfg.drv_data = ddata; - ddata->psy = devm_power_supply_register(ddata->dev, psy_desc, + ddata->psy = devm_power_supply_register(ddata->dev, + &cpcap_charger_battery_desc, &psy_cfg); error = PTR_ERR_OR_ZERO(ddata->psy); if (error) { diff --git a/drivers/power/supply/cpcap-charger.c b/drivers/power/supply/cpcap-charger.c index c0d452e3dc8b..641dcad1133f 100644 --- a/drivers/power/supply/cpcap-charger.c +++ b/drivers/power/supply/cpcap-charger.c @@ -89,6 +89,8 @@ * CPCAP_REG_CRM charge currents. These seem to match MC13783UG.pdf * values in "Table 8-3. Charge Path Regulator Current Limit * Characteristics" for the nominal values. + * + * Except 70mA and 1.596A and unlimited, these are simply 88.7mA / step. */ #define CPCAP_REG_CRM_ICHRG(val) (((val) & 0xf) << 0) #define CPCAP_REG_CRM_ICHRG_0A000 CPCAP_REG_CRM_ICHRG(0x0) @@ -120,13 +122,6 @@ enum { CPCAP_CHARGER_IIO_NR, }; -enum { - CPCAP_CHARGER_DISCONNECTED, - CPCAP_CHARGER_DETECTING, - CPCAP_CHARGER_CHARGING, - CPCAP_CHARGER_DONE, -}; - struct cpcap_charger_ddata { struct device *dev; struct regmap *reg; @@ -145,8 +140,8 @@ struct cpcap_charger_ddata { atomic_t active; int status; - int state; int voltage; + int limit_current; }; struct cpcap_interrupt_desc { @@ -173,6 +168,7 @@ static enum power_supply_property cpcap_charger_props[] = { POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, POWER_SUPPLY_PROP_VOLTAGE_NOW, POWER_SUPPLY_PROP_CURRENT_NOW, }; @@ -236,6 +232,9 @@ static int cpcap_charger_get_property(struct power_supply *psy, case POWER_SUPPLY_PROP_STATUS: val->intval = ddata->status; break; + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + val->intval = ddata->limit_current; + break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: val->intval = ddata->voltage; break; @@ -301,11 +300,33 @@ cpcap_charger_get_bat_const_charge_voltage(struct cpcap_charger_ddata *ddata) &prop); if (!error) voltage = prop.intval; + + power_supply_put(battery); } return voltage; } +static int cpcap_charger_current_to_regval(int microamp) +{ + int miliamp = microamp / 1000; + int res; + + if (miliamp < 0) + return -EINVAL; + if (miliamp < 70) + return CPCAP_REG_CRM_ICHRG(0x0); + if (miliamp < 177) + return CPCAP_REG_CRM_ICHRG(0x1); + if (miliamp > 1596) + return CPCAP_REG_CRM_ICHRG(0xe); + + res = microamp / 88666; + if (res > 0xd) + res = 0xd; + return CPCAP_REG_CRM_ICHRG(res); +} + static int cpcap_charger_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) @@ -314,6 +335,12 @@ static int cpcap_charger_set_property(struct power_supply *psy, int voltage, batvolt; switch (psp) { + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + if (cpcap_charger_current_to_regval(val->intval) < 0) + return -EINVAL; + ddata->limit_current = val->intval; + schedule_delayed_work(&ddata->detect_work, 0); + break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: voltage = cpcap_charger_match_voltage(val->intval); batvolt = cpcap_charger_get_bat_const_charge_voltage(ddata); @@ -333,6 +360,7 @@ static int cpcap_charger_property_is_writeable(struct power_supply *psy, enum power_supply_property psp) { switch (psp) { + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: return 1; default: @@ -358,31 +386,64 @@ static void cpcap_charger_set_inductive_path(struct cpcap_charger_ddata *ddata, gpiod_set_value(ddata->gpio[1], enabled); } -static int cpcap_charger_set_state(struct cpcap_charger_ddata *ddata, - int max_voltage, int charge_current, - int trickle_current) +static void cpcap_charger_update_state(struct cpcap_charger_ddata *ddata, + int state) { - bool enable; - int error; + const char *status; - enable = (charge_current || trickle_current); - dev_dbg(ddata->dev, "%s enable: %i\n", __func__, enable); + if (state > POWER_SUPPLY_STATUS_FULL) { + dev_warn(ddata->dev, "unknown state: %i\n", state); - if (!enable) { - error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM, - 0x3fff, - CPCAP_REG_CRM_FET_OVRD | - CPCAP_REG_CRM_FET_CTRL); - if (error) { - ddata->status = POWER_SUPPLY_STATUS_UNKNOWN; - goto out_err; - } + return; + } - ddata->status = POWER_SUPPLY_STATUS_DISCHARGING; + ddata->status = state; - return 0; + switch (state) { + case POWER_SUPPLY_STATUS_DISCHARGING: + status = "DISCONNECTED"; + break; + case POWER_SUPPLY_STATUS_NOT_CHARGING: + status = "DETECTING"; + break; + case POWER_SUPPLY_STATUS_CHARGING: + status = "CHARGING"; + break; + case POWER_SUPPLY_STATUS_FULL: + status = "DONE"; + break; + default: + return; } + dev_dbg(ddata->dev, "state: %s\n", status); +} + +static int cpcap_charger_disable(struct cpcap_charger_ddata *ddata) +{ + int error; + + error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM, 0x3fff, + CPCAP_REG_CRM_FET_OVRD | + CPCAP_REG_CRM_FET_CTRL); + if (error) + dev_err(ddata->dev, "%s failed with %i\n", __func__, error); + + return error; +} + +static int cpcap_charger_enable(struct cpcap_charger_ddata *ddata, + int max_voltage, int charge_current, + int trickle_current) +{ + int error; + + if (!max_voltage || !charge_current) + return -EINVAL; + + dev_dbg(ddata->dev, "enable: %i %i %i\n", + max_voltage, charge_current, trickle_current); + error = regmap_update_bits(ddata->reg, CPCAP_REG_CRM, 0x3fff, CPCAP_REG_CRM_CHRG_LED_EN | trickle_current | @@ -390,17 +451,8 @@ static int cpcap_charger_set_state(struct cpcap_charger_ddata *ddata, CPCAP_REG_CRM_FET_CTRL | max_voltage | charge_current); - if (error) { - ddata->status = POWER_SUPPLY_STATUS_UNKNOWN; - goto out_err; - } - - ddata->status = POWER_SUPPLY_STATUS_CHARGING; - - return 0; - -out_err: - dev_err(ddata->dev, "%s failed with %i\n", __func__, error); + if (error) + dev_err(ddata->dev, "%s failed with %i\n", __func__, error); return error; } @@ -433,7 +485,7 @@ static void cpcap_charger_vbus_work(struct work_struct *work) if (ddata->vbus_enabled) { vbus = cpcap_charger_vbus_valid(ddata); if (vbus) { - dev_info(ddata->dev, "VBUS already provided\n"); + dev_dbg(ddata->dev, "VBUS already provided\n"); return; } @@ -442,10 +494,13 @@ static void cpcap_charger_vbus_work(struct work_struct *work) cpcap_charger_set_cable_path(ddata, false); cpcap_charger_set_inductive_path(ddata, false); - error = cpcap_charger_set_state(ddata, 0, 0, 0); + error = cpcap_charger_disable(ddata); if (error) goto out_err; + cpcap_charger_update_state(ddata, + POWER_SUPPLY_STATUS_DISCHARGING); + error = regmap_update_bits(ddata->reg, CPCAP_REG_VUSBC, CPCAP_BIT_VBUS_SWITCH, CPCAP_BIT_VBUS_SWITCH); @@ -476,6 +531,7 @@ static void cpcap_charger_vbus_work(struct work_struct *work) return; out_err: + cpcap_charger_update_state(ddata, POWER_SUPPLY_STATUS_UNKNOWN); dev_err(ddata->dev, "%s could not %s vbus: %i\n", __func__, ddata->vbus_enabled ? "enable" : "disable", error); } @@ -527,39 +583,6 @@ static int cpcap_charger_get_ints_state(struct cpcap_charger_ddata *ddata, return 0; } -static void cpcap_charger_update_state(struct cpcap_charger_ddata *ddata, - int state) -{ - const char *status; - - if (state > CPCAP_CHARGER_DONE) { - dev_warn(ddata->dev, "unknown state: %i\n", state); - - return; - } - - ddata->state = state; - - switch (state) { - case CPCAP_CHARGER_DISCONNECTED: - status = "DISCONNECTED"; - break; - case CPCAP_CHARGER_DETECTING: - status = "DETECTING"; - break; - case CPCAP_CHARGER_CHARGING: - status = "CHARGING"; - break; - case CPCAP_CHARGER_DONE: - status = "DONE"; - break; - default: - return; - } - - dev_dbg(ddata->dev, "state: %s\n", status); -} - static int cpcap_charger_voltage_to_regval(int voltage) { int offset; @@ -591,9 +614,21 @@ static void cpcap_charger_disconnect(struct cpcap_charger_ddata *ddata, { int error; - error = cpcap_charger_set_state(ddata, 0, 0, 0); - if (error) + /* Update battery state before disconnecting the charger */ + switch (state) { + case POWER_SUPPLY_STATUS_DISCHARGING: + case POWER_SUPPLY_STATUS_FULL: + power_supply_changed(ddata->usb); + break; + default: + break; + } + + error = cpcap_charger_disable(ddata); + if (error) { + cpcap_charger_update_state(ddata, POWER_SUPPLY_STATUS_UNKNOWN); return; + } cpcap_charger_update_state(ddata, state); power_supply_changed(ddata->usb); @@ -604,7 +639,7 @@ static void cpcap_usb_detect(struct work_struct *work) { struct cpcap_charger_ddata *ddata; struct cpcap_charger_ints_state s; - int error; + int error, new_state; ddata = container_of(work, struct cpcap_charger_ddata, detect_work.work); @@ -615,7 +650,8 @@ static void cpcap_usb_detect(struct work_struct *work) /* Just init the state if a charger is connected with no chrg_det set */ if (!s.chrg_det && s.chrgcurr1 && s.vbusvld) { - cpcap_charger_update_state(ddata, CPCAP_CHARGER_DETECTING); + cpcap_charger_update_state(ddata, + POWER_SUPPLY_STATUS_NOT_CHARGING); return; } @@ -625,28 +661,35 @@ static void cpcap_usb_detect(struct work_struct *work) * charged to 4.35V by Android. Try again in 10 minutes. */ if (cpcap_charger_get_charge_voltage(ddata) > ddata->voltage) { - cpcap_charger_disconnect(ddata, CPCAP_CHARGER_DETECTING, + cpcap_charger_disconnect(ddata, + POWER_SUPPLY_STATUS_NOT_CHARGING, HZ * 60 * 10); return; } /* Throttle chrgcurr2 interrupt for charger done and retry */ - switch (ddata->state) { - case CPCAP_CHARGER_CHARGING: + switch (ddata->status) { + case POWER_SUPPLY_STATUS_CHARGING: if (s.chrgcurr2) break; + new_state = POWER_SUPPLY_STATUS_FULL; + if (s.chrgcurr1 && s.vbusvld) { - cpcap_charger_disconnect(ddata, CPCAP_CHARGER_DONE, - HZ * 5); + cpcap_charger_disconnect(ddata, new_state, HZ * 5); return; } break; - case CPCAP_CHARGER_DONE: + case POWER_SUPPLY_STATUS_FULL: if (!s.chrgcurr2) break; - cpcap_charger_disconnect(ddata, CPCAP_CHARGER_DETECTING, - HZ * 5); + if (s.vbusvld) + new_state = POWER_SUPPLY_STATUS_NOT_CHARGING; + else + new_state = POWER_SUPPLY_STATUS_DISCHARGING; + + cpcap_charger_disconnect(ddata, new_state, HZ * 5); + return; default: break; @@ -654,32 +697,37 @@ static void cpcap_usb_detect(struct work_struct *work) if (!ddata->feeding_vbus && cpcap_charger_vbus_valid(ddata) && s.chrgcurr1) { - int max_current; - int vchrg; + int max_current = 532000; + int vchrg, ichrg; if (cpcap_charger_battery_found(ddata)) - max_current = CPCAP_REG_CRM_ICHRG_1A596; - else - max_current = CPCAP_REG_CRM_ICHRG_0A532; + max_current = 1596000; + + if (max_current > ddata->limit_current) + max_current = ddata->limit_current; + ichrg = cpcap_charger_current_to_regval(max_current); vchrg = cpcap_charger_voltage_to_regval(ddata->voltage); - error = cpcap_charger_set_state(ddata, - CPCAP_REG_CRM_VCHRG(vchrg), - max_current, 0); + error = cpcap_charger_enable(ddata, + CPCAP_REG_CRM_VCHRG(vchrg), + ichrg, 0); if (error) goto out_err; - cpcap_charger_update_state(ddata, CPCAP_CHARGER_CHARGING); + cpcap_charger_update_state(ddata, + POWER_SUPPLY_STATUS_CHARGING); } else { - error = cpcap_charger_set_state(ddata, 0, 0, 0); + error = cpcap_charger_disable(ddata); if (error) goto out_err; - cpcap_charger_update_state(ddata, CPCAP_CHARGER_DISCONNECTED); + cpcap_charger_update_state(ddata, + POWER_SUPPLY_STATUS_DISCHARGING); } power_supply_changed(ddata->usb); return; out_err: + cpcap_charger_update_state(ddata, POWER_SUPPLY_STATUS_UNKNOWN); dev_err(ddata->dev, "%s failed with %i\n", __func__, error); } @@ -708,7 +756,7 @@ static int cpcap_usb_init_irq(struct platform_device *pdev, error = devm_request_threaded_irq(ddata->dev, irq, NULL, cpcap_charger_irq_thread, - IRQF_SHARED, + IRQF_SHARED | IRQF_ONESHOT, name, ddata); if (error) { dev_err(ddata->dev, "could not get irq %s: %i\n", @@ -799,6 +847,10 @@ out_err: return error; } +static char *cpcap_charger_supplied_to[] = { + "battery", +}; + static const struct power_supply_desc cpcap_charger_usb_desc = { .name = "usb", .type = POWER_SUPPLY_TYPE_USB, @@ -837,6 +889,7 @@ static int cpcap_charger_probe(struct platform_device *pdev) ddata->dev = &pdev->dev; ddata->voltage = 4200000; + ddata->limit_current = 532000; ddata->reg = dev_get_regmap(ddata->dev->parent, NULL); if (!ddata->reg) @@ -855,6 +908,8 @@ static int cpcap_charger_probe(struct platform_device *pdev) psy_cfg.of_node = pdev->dev.of_node; psy_cfg.drv_data = ddata; + psy_cfg.supplied_to = cpcap_charger_supplied_to; + psy_cfg.num_supplicants = ARRAY_SIZE(cpcap_charger_supplied_to), ddata->usb = devm_power_supply_register(ddata->dev, &cpcap_charger_usb_desc, @@ -885,7 +940,7 @@ static int cpcap_charger_probe(struct platform_device *pdev) return 0; } -static int cpcap_charger_remove(struct platform_device *pdev) +static void cpcap_charger_shutdown(struct platform_device *pdev) { struct cpcap_charger_ddata *ddata = platform_get_drvdata(pdev); int error; @@ -896,12 +951,20 @@ static int cpcap_charger_remove(struct platform_device *pdev) dev_warn(ddata->dev, "could not clear USB comparator: %i\n", error); - error = cpcap_charger_set_state(ddata, 0, 0, 0); - if (error) + error = cpcap_charger_disable(ddata); + if (error) { + cpcap_charger_update_state(ddata, POWER_SUPPLY_STATUS_UNKNOWN); dev_warn(ddata->dev, "could not clear charger: %i\n", error); + } + cpcap_charger_update_state(ddata, POWER_SUPPLY_STATUS_DISCHARGING); cancel_delayed_work_sync(&ddata->vbus_work); cancel_delayed_work_sync(&ddata->detect_work); +} + +static int cpcap_charger_remove(struct platform_device *pdev) +{ + cpcap_charger_shutdown(pdev); return 0; } @@ -912,6 +975,7 @@ static struct platform_driver cpcap_charger_driver = { .name = "cpcap-charger", .of_match_table = of_match_ptr(cpcap_charger_id_table), }, + .shutdown = cpcap_charger_shutdown, .remove = cpcap_charger_remove, }; module_platform_driver(cpcap_charger_driver); diff --git a/drivers/power/supply/ds2760_battery.c b/drivers/power/supply/ds2760_battery.c index 695bb6747400..5f50da524f41 100644 --- a/drivers/power/supply/ds2760_battery.c +++ b/drivers/power/supply/ds2760_battery.c @@ -198,7 +198,7 @@ static ssize_t w1_slave_read(struct file *filp, struct kobject *kobj, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { - struct device *dev = container_of(kobj, struct device, kobj); + struct device *dev = kobj_to_dev(kobj); return w1_ds2760_read(dev, buf, off, count); } diff --git a/drivers/power/supply/ds2780_battery.c b/drivers/power/supply/ds2780_battery.c index dd57a472e878..2b8c90d84325 100644 --- a/drivers/power/supply/ds2780_battery.c +++ b/drivers/power/supply/ds2780_battery.c @@ -624,7 +624,7 @@ static ssize_t ds2780_read_param_eeprom_bin(struct file *filp, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { - struct device *dev = container_of(kobj, struct device, kobj); + struct device *dev = kobj_to_dev(kobj); struct power_supply *psy = to_power_supply(dev); struct ds2780_device_info *dev_info = to_ds2780_device_info(psy); @@ -637,7 +637,7 @@ static ssize_t ds2780_write_param_eeprom_bin(struct file *filp, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { - struct device *dev = container_of(kobj, struct device, kobj); + struct device *dev = kobj_to_dev(kobj); struct power_supply *psy = to_power_supply(dev); struct ds2780_device_info *dev_info = to_ds2780_device_info(psy); int ret; @@ -669,7 +669,7 @@ static ssize_t ds2780_read_user_eeprom_bin(struct file *filp, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { - struct device *dev = container_of(kobj, struct device, kobj); + struct device *dev = kobj_to_dev(kobj); struct power_supply *psy = to_power_supply(dev); struct ds2780_device_info *dev_info = to_ds2780_device_info(psy); @@ -682,7 +682,7 @@ static ssize_t ds2780_write_user_eeprom_bin(struct file *filp, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { - struct device *dev = container_of(kobj, struct device, kobj); + struct device *dev = kobj_to_dev(kobj); struct power_supply *psy = to_power_supply(dev); struct ds2780_device_info *dev_info = to_ds2780_device_info(psy); int ret; diff --git a/drivers/power/supply/ingenic-battery.c b/drivers/power/supply/ingenic-battery.c index 32dc77fd9a95..8b18219ebe90 100644 --- a/drivers/power/supply/ingenic-battery.c +++ b/drivers/power/supply/ingenic-battery.c @@ -52,7 +52,7 @@ static int ingenic_battery_get_property(struct power_supply *psy, return 0; default: return -EINVAL; - }; + } } /* Set the most appropriate IIO channel voltage reference scale diff --git a/drivers/power/supply/ltc4162-l-charger.c b/drivers/power/supply/ltc4162-l-charger.c new file mode 100644 index 000000000000..1a5cb4405ee3 --- /dev/null +++ b/drivers/power/supply/ltc4162-l-charger.c @@ -0,0 +1,931 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for Analog Devices (Linear Technology) LTC4162-L charger IC. + * Copyright (C) 2020, Topic Embedded Products + */ + +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/of_device.h> +#include <linux/pm_runtime.h> +#include <linux/power_supply.h> +#include <linux/i2c.h> +#include <linux/regmap.h> + +/* Registers (names based on what datasheet uses) */ +#define LTC4162L_EN_LIMIT_ALERTS_REG 0x0D +#define LTC4162L_EN_CHARGER_STATE_ALERTS_REG 0x0E +#define LTC4162L_EN_CHARGE_STATUS_ALERTS_REG 0x0F +#define LTC4162L_CONFIG_BITS_REG 0x14 +#define LTC4162L_IIN_LIMIT_TARGET 0x15 +#define LTC4162L_ARM_SHIP_MODE 0x19 +#define LTC4162L_CHARGE_CURRENT_SETTING 0X1A +#define LTC4162L_VCHARGE_SETTING 0X1B +#define LTC4162L_C_OVER_X_THRESHOLD 0x1C +#define LTC4162L_MAX_CV_TIME 0X1D +#define LTC4162L_MAX_CHARGE_TIME 0X1E +#define LTC4162L_CHARGER_CONFIG_BITS 0x29 +#define LTC4162L_CHARGER_STATE 0x34 +#define LTC4162L_CHARGE_STATUS 0x35 +#define LTC4162L_LIMIT_ALERTS_REG 0x36 +#define LTC4162L_CHARGER_STATE_ALERTS_REG 0x37 +#define LTC4162L_CHARGE_STATUS_ALERTS_REG 0x38 +#define LTC4162L_SYSTEM_STATUS_REG 0x39 +#define LTC4162L_VBAT 0x3A +#define LTC4162L_VIN 0x3B +#define LTC4162L_VOUT 0x3C +#define LTC4162L_IBAT 0x3D +#define LTC4162L_IIN 0x3E +#define LTC4162L_DIE_TEMPERATURE 0x3F +#define LTC4162L_THERMISTOR_VOLTAGE 0x40 +#define LTC4162L_BSR 0x41 +#define LTC4162L_JEITA_REGION 0x42 +#define LTC4162L_CHEM_CELLS_REG 0x43 +#define LTC4162L_ICHARGE_DAC 0x44 +#define LTC4162L_VCHARGE_DAC 0x45 +#define LTC4162L_IIN_LIMIT_DAC 0x46 +#define LTC4162L_VBAT_FILT 0x47 +#define LTC4162L_INPUT_UNDERVOLTAGE_DAC 0x4B + +/* Enumeration as in datasheet. Individual bits are mutually exclusive. */ +enum ltc4162l_state { + battery_detection = 2048, + charger_suspended = 256, + precharge = 128, /* trickle on low bat voltage */ + cc_cv_charge = 64, /* normal charge */ + ntc_pause = 32, + timer_term = 16, + c_over_x_term = 8, /* battery is full */ + max_charge_time_fault = 4, + bat_missing_fault = 2, + bat_short_fault = 1 +}; + +/* Individual bits are mutually exclusive. Only active in charging states.*/ +enum ltc4162l_charge_status { + ilim_reg_active = 32, + thermal_reg_active = 16, + vin_uvcl_active = 8, + iin_limit_active = 4, + constant_current = 2, + constant_voltage = 1, + charger_off = 0 +}; + +/* Magic number to write to ARM_SHIP_MODE register */ +#define LTC4162L_ARM_SHIP_MODE_MAGIC 21325 + +struct ltc4162l_info { + struct i2c_client *client; + struct regmap *regmap; + struct power_supply *charger; + u32 rsnsb; /* Series resistor that sets charge current, microOhm */ + u32 rsnsi; /* Series resistor to measure input current, microOhm */ + u8 cell_count; /* Number of connected cells, 0 while unknown */ +}; + +static u8 ltc4162l_get_cell_count(struct ltc4162l_info *info) +{ + int ret; + unsigned int val; + + /* Once read successfully */ + if (info->cell_count) + return info->cell_count; + + ret = regmap_read(info->regmap, LTC4162L_CHEM_CELLS_REG, &val); + if (ret) + return 0; + + /* Lower 4 bits is the cell count, or 0 if the chip doesn't know yet */ + val &= 0x0f; + if (!val) + return 0; + + /* Once determined, keep the value */ + info->cell_count = val; + + return val; +}; + +/* Convert enum value to POWER_SUPPLY_STATUS value */ +static int ltc4162l_state_decode(enum ltc4162l_state value) +{ + switch (value) { + case precharge: + case cc_cv_charge: + return POWER_SUPPLY_STATUS_CHARGING; + case c_over_x_term: + return POWER_SUPPLY_STATUS_FULL; + case bat_missing_fault: + case bat_short_fault: + return POWER_SUPPLY_STATUS_UNKNOWN; + default: + return POWER_SUPPLY_STATUS_NOT_CHARGING; + } +}; + +static int ltc4162l_get_status(struct ltc4162l_info *info, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, LTC4162L_CHARGER_STATE, ®val); + if (ret) { + dev_err(&info->client->dev, "Failed to read CHARGER_STATE\n"); + return ret; + } + + val->intval = ltc4162l_state_decode(regval); + + return 0; +} + +static int ltc4162l_charge_status_decode(enum ltc4162l_charge_status value) +{ + if (!value) + return POWER_SUPPLY_CHARGE_TYPE_NONE; + + /* constant voltage/current and input_current limit are "fast" modes */ + if (value <= iin_limit_active) + return POWER_SUPPLY_CHARGE_TYPE_FAST; + + /* Anything that's not fast we'll return as trickle */ + return POWER_SUPPLY_CHARGE_TYPE_TRICKLE; +} + +static int ltc4162l_get_charge_type(struct ltc4162l_info *info, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, LTC4162L_CHARGE_STATUS, ®val); + if (ret) + return ret; + + val->intval = ltc4162l_charge_status_decode(regval); + + return 0; +} + +static int ltc4162l_state_to_health(enum ltc4162l_state value) +{ + switch (value) { + case ntc_pause: + return POWER_SUPPLY_HEALTH_OVERHEAT; + case timer_term: + return POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE; + case max_charge_time_fault: + return POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE; + case bat_missing_fault: + return POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; + case bat_short_fault: + return POWER_SUPPLY_HEALTH_DEAD; + default: + return POWER_SUPPLY_HEALTH_GOOD; + } +} + +static int ltc4162l_get_health(struct ltc4162l_info *info, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, LTC4162L_CHARGER_STATE, ®val); + if (ret) + return ret; + + val->intval = ltc4162l_state_to_health(regval); + + return 0; +} + +static int ltc4162l_get_online(struct ltc4162l_info *info, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, LTC4162L_SYSTEM_STATUS_REG, ®val); + if (ret) + return ret; + + /* BIT(2) indicates if input voltage is sufficient to charge */ + val->intval = !!(regval & BIT(2)); + + return 0; +} + +static int ltc4162l_get_vbat(struct ltc4162l_info *info, + unsigned int reg, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, reg, ®val); + if (ret) + return ret; + + /* cell_count × 192.4μV/LSB */ + regval *= 1924; + regval *= ltc4162l_get_cell_count(info); + regval /= 10; + val->intval = regval; + + return 0; +} + +static int ltc4162l_get_ibat(struct ltc4162l_info *info, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, LTC4162L_IBAT, ®val); + if (ret) + return ret; + + /* Signed 16-bit number, 1.466μV / RSNSB amperes/LSB. */ + ret = (s16)(regval & 0xFFFF); + val->intval = 100 * mult_frac(ret, 14660, (int)info->rsnsb); + + return 0; +} + + +static int ltc4162l_get_input_voltage(struct ltc4162l_info *info, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, LTC4162L_VIN, ®val); + if (ret) + return ret; + + /* 1.649mV/LSB */ + val->intval = regval * 1694; + + return 0; +} + +static int ltc4162l_get_input_current(struct ltc4162l_info *info, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, LTC4162L_IIN, ®val); + if (ret) + return ret; + + /* Signed 16-bit number, 1.466μV / RSNSI amperes/LSB. */ + ret = (s16)(regval & 0xFFFF); + ret *= 14660; + ret /= info->rsnsi; + ret *= 100; + + val->intval = ret; + + return 0; +} + +static int ltc4162l_get_icharge(struct ltc4162l_info *info, + unsigned int reg, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, reg, ®val); + if (ret) + return ret; + + regval &= BIT(6) - 1; /* Only the lower 5 bits */ + + /* The charge current servo level: (icharge_dac + 1) × 1mV/RSNSB */ + ++regval; + val->intval = 10000u * mult_frac(regval, 100000u, info->rsnsb); + + return 0; +} + +static int ltc4162l_set_icharge(struct ltc4162l_info *info, + unsigned int reg, + unsigned int value) +{ + value = mult_frac(value, info->rsnsb, 100000u); + value /= 10000u; + + /* Round to lowest possible */ + if (value) + --value; + + if (value > 31) + return -EINVAL; + + return regmap_write(info->regmap, reg, value); +} + + +static int ltc4162l_get_vcharge(struct ltc4162l_info *info, + unsigned int reg, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + u32 voltage; + + ret = regmap_read(info->regmap, reg, ®val); + if (ret) + return ret; + + regval &= BIT(6) - 1; /* Only the lower 5 bits */ + + /* + * charge voltage setting can be computed from + * cell_count × (vcharge_setting × 12.5mV + 3.8125V) + * where vcharge_setting ranges from 0 to 31 (4.2V max). + */ + voltage = 3812500 + (regval * 12500); + voltage *= ltc4162l_get_cell_count(info); + val->intval = voltage; + + return 0; +} + +static int ltc4162l_set_vcharge(struct ltc4162l_info *info, + unsigned int reg, + unsigned int value) +{ + u8 cell_count = ltc4162l_get_cell_count(info); + + if (!cell_count) + return -EBUSY; /* Not available yet, try again later */ + + value /= cell_count; + + if (value < 3812500) + return -EINVAL; + + value -= 3812500; + value /= 12500; + + if (value > 31) + return -EINVAL; + + return regmap_write(info->regmap, reg, value); +} + +static int ltc4162l_get_iin_limit_dac(struct ltc4162l_info *info, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, LTC4162L_IIN_LIMIT_DAC, ®val); + if (ret) + return ret; + + regval &= BIT(6) - 1; /* Only 6 bits */ + + /* (iin_limit_dac + 1) × 500μV / RSNSI */ + ++regval; + regval *= 5000000u; + regval /= info->rsnsi; + val->intval = 100u * regval; + + return 0; +} + +static int ltc4162l_set_iin_limit(struct ltc4162l_info *info, + unsigned int value) +{ + unsigned int regval; + + regval = mult_frac(value, info->rsnsi, 50000u); + regval /= 10000u; + if (regval) + --regval; + if (regval > 63) + regval = 63; + + return regmap_write(info->regmap, LTC4162L_IIN_LIMIT_TARGET, regval); +} + +static int ltc4162l_get_die_temp(struct ltc4162l_info *info, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, LTC4162L_DIE_TEMPERATURE, ®val); + if (ret) + return ret; + + /* die_temp × 0.0215°C/LSB - 264.4°C */ + ret = (s16)(regval & 0xFFFF); + ret *= 215; + ret /= 100; /* Centidegrees scale */ + ret -= 26440; + val->intval = ret; + + return 0; +} + +static int ltc4162l_get_term_current(struct ltc4162l_info *info, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, LTC4162L_CHARGER_CONFIG_BITS, ®val); + if (ret) + return ret; + + /* Check if C_OVER_X_THRESHOLD is enabled */ + if (!(regval & BIT(2))) { + val->intval = 0; + return 0; + } + + ret = regmap_read(info->regmap, LTC4162L_C_OVER_X_THRESHOLD, ®val); + if (ret) + return ret; + + /* 1.466μV / RSNSB amperes/LSB */ + regval *= 14660u; + regval /= info->rsnsb; + val->intval = 100 * regval; + + return 0; +} + +static int ltc4162l_set_term_current(struct ltc4162l_info *info, + unsigned int value) +{ + int ret; + unsigned int regval; + + if (!value) { + /* Disable en_c_over_x_term when set to zero */ + return regmap_update_bits(info->regmap, + LTC4162L_CHARGER_CONFIG_BITS, + BIT(2), 0); + } + + regval = mult_frac(value, info->rsnsb, 14660u); + regval /= 100u; + + ret = regmap_write(info->regmap, LTC4162L_C_OVER_X_THRESHOLD, regval); + if (ret) + return ret; + + /* Set en_c_over_x_term after changing the threshold value */ + return regmap_update_bits(info->regmap, LTC4162L_CHARGER_CONFIG_BITS, + BIT(2), BIT(2)); +} + +/* Custom properties */ +static const char * const ltc4162l_charge_status_name[] = { + "ilim_reg_active", /* 32 */ + "thermal_reg_active", + "vin_uvcl_active", + "iin_limit_active", + "constant_current", + "constant_voltage", + "charger_off" /* 0 */ +}; + +static ssize_t charge_status_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct power_supply *psy = to_power_supply(dev); + struct ltc4162l_info *info = power_supply_get_drvdata(psy); + const char *result = ltc4162l_charge_status_name[ + ARRAY_SIZE(ltc4162l_charge_status_name) - 1]; + unsigned int regval; + unsigned int mask; + unsigned int index; + int ret; + + ret = regmap_read(info->regmap, LTC4162L_CHARGE_STATUS, ®val); + if (ret) + return ret; + + /* Only one bit is set according to datasheet, let's be safe here */ + for (mask = 32, index = 0; mask != 0; mask >>= 1, ++index) { + if (regval & mask) { + result = ltc4162l_charge_status_name[index]; + break; + } + } + + return sprintf(buf, "%s\n", result); +} +static DEVICE_ATTR_RO(charge_status); + +static ssize_t vbat_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct power_supply *psy = to_power_supply(dev); + struct ltc4162l_info *info = power_supply_get_drvdata(psy); + union power_supply_propval val; + int ret; + + ret = ltc4162l_get_vbat(info, LTC4162L_VBAT, &val); + if (ret) + return ret; + + return sprintf(buf, "%d\n", val.intval); +} +static DEVICE_ATTR_RO(vbat); + +static ssize_t vbat_avg_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct power_supply *psy = to_power_supply(dev); + struct ltc4162l_info *info = power_supply_get_drvdata(psy); + union power_supply_propval val; + int ret; + + ret = ltc4162l_get_vbat(info, LTC4162L_VBAT_FILT, &val); + if (ret) + return ret; + + return sprintf(buf, "%d\n", val.intval); +} +static DEVICE_ATTR_RO(vbat_avg); + +static ssize_t ibat_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct power_supply *psy = to_power_supply(dev); + struct ltc4162l_info *info = power_supply_get_drvdata(psy); + union power_supply_propval val; + int ret; + + ret = ltc4162l_get_ibat(info, &val); + if (ret) + return ret; + + return sprintf(buf, "%d\n", val.intval); +} +static DEVICE_ATTR_RO(ibat); + +static ssize_t force_telemetry_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct power_supply *psy = to_power_supply(dev); + struct ltc4162l_info *info = power_supply_get_drvdata(psy); + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, LTC4162L_CONFIG_BITS_REG, ®val); + if (ret) + return ret; + + return sprintf(buf, "%u\n", regval & BIT(2) ? 1 : 0); +} + +static ssize_t force_telemetry_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct power_supply *psy = to_power_supply(dev); + struct ltc4162l_info *info = power_supply_get_drvdata(psy); + int ret; + unsigned int value; + + ret = kstrtouint(buf, 0, &value); + if (ret < 0) + return ret; + + ret = regmap_update_bits(info->regmap, LTC4162L_CONFIG_BITS_REG, + BIT(2), value ? BIT(2) : 0); + if (ret < 0) + return ret; + + return count; +} + +static DEVICE_ATTR_RW(force_telemetry); + +static ssize_t arm_ship_mode_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct power_supply *psy = to_power_supply(dev); + struct ltc4162l_info *info = power_supply_get_drvdata(psy); + unsigned int regval; + int ret; + + ret = regmap_read(info->regmap, LTC4162L_ARM_SHIP_MODE, ®val); + if (ret) + return ret; + + return sprintf(buf, "%u\n", + regval == LTC4162L_ARM_SHIP_MODE_MAGIC ? 1 : 0); +} + +static ssize_t arm_ship_mode_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct power_supply *psy = to_power_supply(dev); + struct ltc4162l_info *info = power_supply_get_drvdata(psy); + int ret; + unsigned int value; + + ret = kstrtouint(buf, 0, &value); + if (ret < 0) + return ret; + + ret = regmap_write(info->regmap, LTC4162L_ARM_SHIP_MODE, + value ? LTC4162L_ARM_SHIP_MODE_MAGIC : 0); + if (ret < 0) + return ret; + + return count; +} + +static DEVICE_ATTR_RW(arm_ship_mode); + +static struct attribute *ltc4162l_sysfs_entries[] = { + &dev_attr_charge_status.attr, + &dev_attr_ibat.attr, + &dev_attr_vbat.attr, + &dev_attr_vbat_avg.attr, + &dev_attr_force_telemetry.attr, + &dev_attr_arm_ship_mode.attr, + NULL, +}; + +static const struct attribute_group ltc4162l_attr_group = { + .name = NULL, /* put in device directory */ + .attrs = ltc4162l_sysfs_entries, +}; + +static const struct attribute_group *ltc4162l_attr_groups[] = { + <c4162l_attr_group, + NULL, +}; + +static int ltc4162l_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct ltc4162l_info *info = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + return ltc4162l_get_status(info, val); + case POWER_SUPPLY_PROP_CHARGE_TYPE: + return ltc4162l_get_charge_type(info, val); + case POWER_SUPPLY_PROP_HEALTH: + return ltc4162l_get_health(info, val); + case POWER_SUPPLY_PROP_ONLINE: + return ltc4162l_get_online(info, val); + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + return ltc4162l_get_input_voltage(info, val); + case POWER_SUPPLY_PROP_CURRENT_NOW: + return ltc4162l_get_input_current(info, val); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + return ltc4162l_get_icharge(info, + LTC4162L_ICHARGE_DAC, val); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + return ltc4162l_get_icharge(info, + LTC4162L_CHARGE_CURRENT_SETTING, val); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + return ltc4162l_get_vcharge(info, + LTC4162L_VCHARGE_DAC, val); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + return ltc4162l_get_vcharge(info, + LTC4162L_VCHARGE_SETTING, val); + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + return ltc4162l_get_iin_limit_dac(info, val); + case POWER_SUPPLY_PROP_TEMP: + return ltc4162l_get_die_temp(info, val); + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + return ltc4162l_get_term_current(info, val); + default: + return -EINVAL; + } +} + +static int ltc4162l_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct ltc4162l_info *info = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + return ltc4162l_set_icharge(info, + LTC4162L_CHARGE_CURRENT_SETTING, val->intval); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + return ltc4162l_set_vcharge(info, + LTC4162L_VCHARGE_SETTING, val->intval); + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + return ltc4162l_set_iin_limit(info, val->intval); + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + return ltc4162l_set_term_current(info, val->intval); + default: + return -EINVAL; + } +} + +static int ltc4162l_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + return 1; + default: + return 0; + } +} + +/* Charger power supply property routines */ +static enum power_supply_property ltc4162l_properties[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_CHARGE_TYPE, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, + POWER_SUPPLY_PROP_TEMP, + POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, +}; + +static const struct power_supply_desc ltc4162l_desc = { + .name = "ltc4162-l", + .type = POWER_SUPPLY_TYPE_MAINS, + .properties = ltc4162l_properties, + .num_properties = ARRAY_SIZE(ltc4162l_properties), + .get_property = ltc4162l_get_property, + .set_property = ltc4162l_set_property, + .property_is_writeable = ltc4162l_property_is_writeable, +}; + +static bool ltc4162l_is_writeable_reg(struct device *dev, unsigned int reg) +{ + /* all registers up to this one are writeable */ + if (reg <= LTC4162L_CHARGER_CONFIG_BITS) + return true; + + /* The ALERTS registers can be written to clear alerts */ + if (reg >= LTC4162L_LIMIT_ALERTS_REG && + reg <= LTC4162L_CHARGE_STATUS_ALERTS_REG) + return true; + + return false; +} + +static bool ltc4162l_is_volatile_reg(struct device *dev, unsigned int reg) +{ + /* all registers after this one are read-only status registers */ + return reg > LTC4162L_CHARGER_CONFIG_BITS; +} + +static const struct regmap_config ltc4162l_regmap_config = { + .reg_bits = 8, + .val_bits = 16, + .val_format_endian = REGMAP_ENDIAN_LITTLE, + .writeable_reg = ltc4162l_is_writeable_reg, + .volatile_reg = ltc4162l_is_volatile_reg, + .max_register = LTC4162L_INPUT_UNDERVOLTAGE_DAC, + .cache_type = REGCACHE_RBTREE, +}; + +static void ltc4162l_clear_interrupts(struct ltc4162l_info *info) +{ + /* Acknowledge interrupt to chip by clearing all events */ + regmap_write(info->regmap, LTC4162L_LIMIT_ALERTS_REG, 0); + regmap_write(info->regmap, LTC4162L_CHARGER_STATE_ALERTS_REG, 0); + regmap_write(info->regmap, LTC4162L_CHARGE_STATUS_ALERTS_REG, 0); +} + +static int ltc4162l_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct i2c_adapter *adapter = client->adapter; + struct device *dev = &client->dev; + struct ltc4162l_info *info; + struct power_supply_config ltc4162l_config = {}; + u32 value; + int ret; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { + dev_err(dev, "No support for SMBUS_WORD_DATA\n"); + return -ENODEV; + } + info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->client = client; + i2c_set_clientdata(client, info); + + info->regmap = devm_regmap_init_i2c(client, <c4162l_regmap_config); + if (IS_ERR(info->regmap)) { + dev_err(dev, "Failed to initialize register map\n"); + return PTR_ERR(info->regmap); + } + + ret = device_property_read_u32(dev, "lltc,rsnsb-micro-ohms", + &info->rsnsb); + if (ret) { + dev_err(dev, "Missing lltc,rsnsb-micro-ohms property\n"); + return ret; + } + if (!info->rsnsb) + return -EINVAL; + + ret = device_property_read_u32(dev, "lltc,rsnsi-micro-ohms", + &info->rsnsi); + if (ret) { + dev_err(dev, "Missing lltc,rsnsi-micro-ohms property\n"); + return ret; + } + if (!info->rsnsi) + return -EINVAL; + + if (!device_property_read_u32(dev, "lltc,cell-count", &value)) + info->cell_count = value; + + ltc4162l_config.of_node = dev->of_node; + ltc4162l_config.drv_data = info; + ltc4162l_config.attr_grp = ltc4162l_attr_groups; + + info->charger = devm_power_supply_register(dev, <c4162l_desc, + <c4162l_config); + if (IS_ERR(info->charger)) { + dev_err(dev, "Failed to register charger\n"); + return PTR_ERR(info->charger); + } + + /* Disable the threshold alerts, we're not using them */ + regmap_write(info->regmap, LTC4162L_EN_LIMIT_ALERTS_REG, 0); + + /* Enable interrupts on all status changes */ + regmap_write(info->regmap, LTC4162L_EN_CHARGER_STATE_ALERTS_REG, + 0x1fff); + regmap_write(info->regmap, LTC4162L_EN_CHARGE_STATUS_ALERTS_REG, 0x1f); + + ltc4162l_clear_interrupts(info); + + return 0; +} + +static void ltc4162l_alert(struct i2c_client *client, + enum i2c_alert_protocol type, unsigned int flag) +{ + struct ltc4162l_info *info = i2c_get_clientdata(client); + + if (type != I2C_PROTOCOL_SMBUS_ALERT) + return; + + ltc4162l_clear_interrupts(info); + power_supply_changed(info->charger); +} + +static const struct i2c_device_id ltc4162l_i2c_id_table[] = { + { "ltc4162-l", 0 }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, ltc4162l_i2c_id_table); + +static const struct of_device_id ltc4162l_of_match[] = { + { .compatible = "lltc,ltc4162-l", }, + { }, +}; +MODULE_DEVICE_TABLE(of, ltc4162l_of_match); + +static struct i2c_driver ltc4162l_driver = { + .probe = ltc4162l_probe, + .alert = ltc4162l_alert, + .id_table = ltc4162l_i2c_id_table, + .driver = { + .name = "ltc4162-l-charger", + .of_match_table = of_match_ptr(ltc4162l_of_match), + }, +}; +module_i2c_driver(ltc4162l_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Mike Looijmans <mike.looijmans@topic.nl>"); +MODULE_DESCRIPTION("LTC4162-L charger driver"); diff --git a/drivers/power/supply/max14656_charger_detector.c b/drivers/power/supply/max14656_charger_detector.c index 137f9fafce8c..3f49b29f3c88 100644 --- a/drivers/power/supply/max14656_charger_detector.c +++ b/drivers/power/supply/max14656_charger_detector.c @@ -15,8 +15,6 @@ #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/slab.h> -#include <linux/gpio.h> -#include <linux/of_gpio.h> #include <linux/of_device.h> #include <linux/workqueue.h> #include <linux/power_supply.h> diff --git a/drivers/power/supply/max8903_charger.c b/drivers/power/supply/max8903_charger.c index 0bd39b0cc257..54d50b55fbae 100644 --- a/drivers/power/supply/max8903_charger.c +++ b/drivers/power/supply/max8903_charger.c @@ -6,22 +6,32 @@ * MyungJoo Ham <myungjoo.ham@samsung.com> */ -#include <linux/gpio.h> +#include <linux/gpio/consumer.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_device.h> -#include <linux/of_gpio.h> #include <linux/slab.h> #include <linux/power_supply.h> #include <linux/platform_device.h> -#include <linux/power/max8903_charger.h> struct max8903_data { - struct max8903_pdata *pdata; struct device *dev; struct power_supply *psy; struct power_supply_desc psy_desc; + /* + * GPIOs + * chg, flt, dcm and usus are optional. + * dok or uok must be present. + * If dok is present, cen must be present. + */ + struct gpio_desc *cen; /* Charger Enable input */ + struct gpio_desc *dok; /* DC (Adapter) Power OK output */ + struct gpio_desc *uok; /* USB Power OK output */ + struct gpio_desc *chg; /* Charger status output */ + struct gpio_desc *flt; /* Fault output */ + struct gpio_desc *dcm; /* Current-Limit Mode input (1: DC, 2: USB) */ + struct gpio_desc *usus; /* USB Suspend Input (1: suspended) */ bool fault; bool usb_in; bool ta_in; @@ -42,8 +52,9 @@ static int max8903_get_property(struct power_supply *psy, switch (psp) { case POWER_SUPPLY_PROP_STATUS: val->intval = POWER_SUPPLY_STATUS_UNKNOWN; - if (gpio_is_valid(data->pdata->chg)) { - if (gpio_get_value(data->pdata->chg) == 0) + if (data->chg) { + if (gpiod_get_value(data->chg)) + /* CHG asserted */ val->intval = POWER_SUPPLY_STATUS_CHARGING; else if (data->usb_in || data->ta_in) val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; @@ -71,11 +82,17 @@ static int max8903_get_property(struct power_supply *psy, static irqreturn_t max8903_dcin(int irq, void *_data) { struct max8903_data *data = _data; - struct max8903_pdata *pdata = data->pdata; bool ta_in; enum power_supply_type old_type; - ta_in = gpio_get_value(pdata->dok) ? false : true; + /* + * This means the line is asserted. + * + * The signal is active low, but the inversion is handled in the GPIO + * library as the line should be flagged GPIO_ACTIVE_LOW in the device + * tree. + */ + ta_in = gpiod_get_value(data->dok); if (ta_in == data->ta_in) return IRQ_HANDLED; @@ -83,13 +100,25 @@ static irqreturn_t max8903_dcin(int irq, void *_data) data->ta_in = ta_in; /* Set Current-Limit-Mode 1:DC 0:USB */ - if (gpio_is_valid(pdata->dcm)) - gpio_set_value(pdata->dcm, ta_in ? 1 : 0); - - /* Charger Enable / Disable (cen is negated) */ - if (gpio_is_valid(pdata->cen)) - gpio_set_value(pdata->cen, ta_in ? 0 : - (data->usb_in ? 0 : 1)); + if (data->dcm) + gpiod_set_value(data->dcm, ta_in); + + /* Charger Enable / Disable */ + if (data->cen) { + int val; + + if (ta_in) + /* Certainly enable if DOK is asserted */ + val = 1; + else if (data->usb_in) + /* Enable if the USB charger is enabled */ + val = 1; + else + /* Else default-disable */ + val = 0; + + gpiod_set_value(data->cen, val); + } dev_dbg(data->dev, "TA(DC-IN) Charger %s.\n", ta_in ? "Connected" : "Disconnected"); @@ -112,11 +141,17 @@ static irqreturn_t max8903_dcin(int irq, void *_data) static irqreturn_t max8903_usbin(int irq, void *_data) { struct max8903_data *data = _data; - struct max8903_pdata *pdata = data->pdata; bool usb_in; enum power_supply_type old_type; - usb_in = gpio_get_value(pdata->uok) ? false : true; + /* + * This means the line is asserted. + * + * The signal is active low, but the inversion is handled in the GPIO + * library as the line should be flagged GPIO_ACTIVE_LOW in the device + * tree. + */ + usb_in = gpiod_get_value(data->uok); if (usb_in == data->usb_in) return IRQ_HANDLED; @@ -125,10 +160,22 @@ static irqreturn_t max8903_usbin(int irq, void *_data) /* Do not touch Current-Limit-Mode */ - /* Charger Enable / Disable (cen is negated) */ - if (gpio_is_valid(pdata->cen)) - gpio_set_value(pdata->cen, usb_in ? 0 : - (data->ta_in ? 0 : 1)); + /* Charger Enable / Disable */ + if (data->cen) { + int val; + + if (usb_in) + /* Certainly enable if UOK is asserted */ + val = 1; + else if (data->ta_in) + /* Enable if the DC charger is enabled */ + val = 1; + else + /* Else default-disable */ + val = 0; + + gpiod_set_value(data->cen, val); + } dev_dbg(data->dev, "USB Charger %s.\n", usb_in ? "Connected" : "Disconnected"); @@ -151,10 +198,16 @@ static irqreturn_t max8903_usbin(int irq, void *_data) static irqreturn_t max8903_fault(int irq, void *_data) { struct max8903_data *data = _data; - struct max8903_pdata *pdata = data->pdata; bool fault; - fault = gpio_get_value(pdata->flt) ? false : true; + /* + * This means the line is asserted. + * + * The signal is active low, but the inversion is handled in the GPIO + * library as the line should be flagged GPIO_ACTIVE_LOW in the device + * tree. + */ + fault = gpiod_get_value(data->flt); if (fault == data->fault) return IRQ_HANDLED; @@ -169,159 +222,100 @@ static irqreturn_t max8903_fault(int irq, void *_data) return IRQ_HANDLED; } -static struct max8903_pdata *max8903_parse_dt_data(struct device *dev) -{ - struct device_node *np = dev->of_node; - struct max8903_pdata *pdata = NULL; - - if (!np) - return NULL; - - pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) - return NULL; - - pdata->dc_valid = false; - pdata->usb_valid = false; - - pdata->cen = of_get_named_gpio(np, "cen-gpios", 0); - if (!gpio_is_valid(pdata->cen)) - pdata->cen = -EINVAL; - - pdata->chg = of_get_named_gpio(np, "chg-gpios", 0); - if (!gpio_is_valid(pdata->chg)) - pdata->chg = -EINVAL; - - pdata->flt = of_get_named_gpio(np, "flt-gpios", 0); - if (!gpio_is_valid(pdata->flt)) - pdata->flt = -EINVAL; - - pdata->usus = of_get_named_gpio(np, "usus-gpios", 0); - if (!gpio_is_valid(pdata->usus)) - pdata->usus = -EINVAL; - - pdata->dcm = of_get_named_gpio(np, "dcm-gpios", 0); - if (!gpio_is_valid(pdata->dcm)) - pdata->dcm = -EINVAL; - - pdata->dok = of_get_named_gpio(np, "dok-gpios", 0); - if (!gpio_is_valid(pdata->dok)) - pdata->dok = -EINVAL; - else - pdata->dc_valid = true; - - pdata->uok = of_get_named_gpio(np, "uok-gpios", 0); - if (!gpio_is_valid(pdata->uok)) - pdata->uok = -EINVAL; - else - pdata->usb_valid = true; - - return pdata; -} - static int max8903_setup_gpios(struct platform_device *pdev) { struct max8903_data *data = platform_get_drvdata(pdev); struct device *dev = &pdev->dev; - struct max8903_pdata *pdata = pdev->dev.platform_data; - int ret = 0; - int gpio; - int ta_in = 0; - int usb_in = 0; - - if (pdata->dc_valid) { - if (gpio_is_valid(pdata->dok)) { - ret = devm_gpio_request(dev, pdata->dok, - data->psy_desc.name); - if (ret) { - dev_err(dev, - "Failed GPIO request for dok: %d err %d\n", - pdata->dok, ret); - return ret; - } - - gpio = pdata->dok; /* PULL_UPed Interrupt */ - ta_in = gpio_get_value(gpio) ? 0 : 1; - } else { - dev_err(dev, "When DC is wired, DOK should be wired as well.\n"); - return -EINVAL; - } - } - - if (gpio_is_valid(pdata->dcm)) { - ret = devm_gpio_request(dev, pdata->dcm, data->psy_desc.name); - if (ret) { - dev_err(dev, - "Failed GPIO request for dcm: %d err %d\n", - pdata->dcm, ret); - return ret; - } - - gpio = pdata->dcm; /* Output */ - gpio_set_value(gpio, ta_in); + bool ta_in = false; + bool usb_in = false; + enum gpiod_flags flags; + + data->dok = devm_gpiod_get_optional(dev, "dok", GPIOD_IN); + if (IS_ERR(data->dok)) + return dev_err_probe(dev, PTR_ERR(data->dok), + "failed to get DOK GPIO"); + if (data->dok) { + gpiod_set_consumer_name(data->dok, data->psy_desc.name); + /* + * The DC OK is pulled up to 1 and goes low when a charger + * is plugged in (active low) but in the device tree the + * line is marked as GPIO_ACTIVE_LOW so we get a 1 (asserted) + * here if the DC charger is plugged in. + */ + ta_in = gpiod_get_value(data->dok); } - if (pdata->usb_valid) { - if (gpio_is_valid(pdata->uok)) { - ret = devm_gpio_request(dev, pdata->uok, - data->psy_desc.name); - if (ret) { - dev_err(dev, - "Failed GPIO request for uok: %d err %d\n", - pdata->uok, ret); - return ret; - } - - gpio = pdata->uok; - usb_in = gpio_get_value(gpio) ? 0 : 1; - } else { - dev_err(dev, "When USB is wired, UOK should be wired." - "as well.\n"); - return -EINVAL; - } - } - - if (gpio_is_valid(pdata->cen)) { - ret = devm_gpio_request(dev, pdata->cen, data->psy_desc.name); - if (ret) { - dev_err(dev, - "Failed GPIO request for cen: %d err %d\n", - pdata->cen, ret); - return ret; - } - - gpio_set_value(pdata->cen, (ta_in || usb_in) ? 0 : 1); + data->uok = devm_gpiod_get_optional(dev, "uok", GPIOD_IN); + if (IS_ERR(data->uok)) + return dev_err_probe(dev, PTR_ERR(data->uok), + "failed to get UOK GPIO"); + if (data->uok) { + gpiod_set_consumer_name(data->uok, data->psy_desc.name); + /* + * The USB OK is pulled up to 1 and goes low when a USB charger + * is plugged in (active low) but in the device tree the + * line is marked as GPIO_ACTIVE_LOW so we get a 1 (asserted) + * here if the USB charger is plugged in. + */ + usb_in = gpiod_get_value(data->uok); } - if (gpio_is_valid(pdata->chg)) { - ret = devm_gpio_request(dev, pdata->chg, data->psy_desc.name); - if (ret) { - dev_err(dev, - "Failed GPIO request for chg: %d err %d\n", - pdata->chg, ret); - return ret; - } - } - - if (gpio_is_valid(pdata->flt)) { - ret = devm_gpio_request(dev, pdata->flt, data->psy_desc.name); - if (ret) { - dev_err(dev, - "Failed GPIO request for flt: %d err %d\n", - pdata->flt, ret); - return ret; - } + /* Either DC OK or USB OK must be provided */ + if (!data->dok && !data->uok) { + dev_err(dev, "no valid power source\n"); + return -EINVAL; } - if (gpio_is_valid(pdata->usus)) { - ret = devm_gpio_request(dev, pdata->usus, data->psy_desc.name); - if (ret) { - dev_err(dev, - "Failed GPIO request for usus: %d err %d\n", - pdata->usus, ret); - return ret; - } - } + /* + * If either charger is already connected at this point, + * assert the CEN line and enable charging from the start. + * + * The line is active low but also marked with GPIO_ACTIVE_LOW + * in the device tree, so when we assert the line with + * GPIOD_OUT_HIGH the line will be driven low. + */ + flags = (ta_in || usb_in) ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW; + /* + * If DC OK is provided, Charger Enable CEN is compulsory + * so this is not optional here. + */ + data->cen = devm_gpiod_get(dev, "cen", flags); + if (IS_ERR(data->cen)) + return dev_err_probe(dev, PTR_ERR(data->cen), + "failed to get CEN GPIO"); + gpiod_set_consumer_name(data->cen, data->psy_desc.name); + + /* + * If the DC charger is connected, then select it. + * + * The DCM line should be marked GPIO_ACTIVE_HIGH in the + * device tree. Driving it high will enable the DC charger + * input over the USB charger input. + */ + flags = ta_in ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW; + data->dcm = devm_gpiod_get_optional(dev, "dcm", flags); + if (IS_ERR(data->dcm)) + return dev_err_probe(dev, PTR_ERR(data->dcm), + "failed to get DCM GPIO"); + gpiod_set_consumer_name(data->dcm, data->psy_desc.name); + + data->chg = devm_gpiod_get_optional(dev, "chg", GPIOD_IN); + if (IS_ERR(data->chg)) + return dev_err_probe(dev, PTR_ERR(data->chg), + "failed to get CHG GPIO"); + gpiod_set_consumer_name(data->chg, data->psy_desc.name); + + data->flt = devm_gpiod_get_optional(dev, "flt", GPIOD_IN); + if (IS_ERR(data->flt)) + return dev_err_probe(dev, PTR_ERR(data->flt), + "failed to get FLT GPIO"); + gpiod_set_consumer_name(data->flt, data->psy_desc.name); + + data->usus = devm_gpiod_get_optional(dev, "usus", GPIOD_IN); + if (IS_ERR(data->usus)) + return dev_err_probe(dev, PTR_ERR(data->usus), + "failed to get USUS GPIO"); + gpiod_set_consumer_name(data->usus, data->psy_desc.name); data->fault = false; data->ta_in = ta_in; @@ -334,7 +328,6 @@ static int max8903_probe(struct platform_device *pdev) { struct max8903_data *data; struct device *dev = &pdev->dev; - struct max8903_pdata *pdata = pdev->dev.platform_data; struct power_supply_config psy_cfg = {}; int ret = 0; @@ -342,24 +335,9 @@ static int max8903_probe(struct platform_device *pdev) if (!data) return -ENOMEM; - if (IS_ENABLED(CONFIG_OF) && !pdata && dev->of_node) - pdata = max8903_parse_dt_data(dev); - - if (!pdata) { - dev_err(dev, "No platform data.\n"); - return -EINVAL; - } - - pdev->dev.platform_data = pdata; - data->pdata = pdata; data->dev = dev; platform_set_drvdata(pdev, data); - if (pdata->dc_valid == false && pdata->usb_valid == false) { - dev_err(dev, "No valid power sources.\n"); - return -EINVAL; - } - ret = max8903_setup_gpios(pdev); if (ret) return ret; @@ -381,41 +359,41 @@ static int max8903_probe(struct platform_device *pdev) return PTR_ERR(data->psy); } - if (pdata->dc_valid) { - ret = devm_request_threaded_irq(dev, gpio_to_irq(pdata->dok), + if (data->dok) { + ret = devm_request_threaded_irq(dev, gpiod_to_irq(data->dok), NULL, max8903_dcin, IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | IRQF_ONESHOT, "MAX8903 DC IN", data); if (ret) { dev_err(dev, "Cannot request irq %d for DC (%d)\n", - gpio_to_irq(pdata->dok), ret); + gpiod_to_irq(data->dok), ret); return ret; } } - if (pdata->usb_valid) { - ret = devm_request_threaded_irq(dev, gpio_to_irq(pdata->uok), + if (data->uok) { + ret = devm_request_threaded_irq(dev, gpiod_to_irq(data->uok), NULL, max8903_usbin, IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | IRQF_ONESHOT, "MAX8903 USB IN", data); if (ret) { dev_err(dev, "Cannot request irq %d for USB (%d)\n", - gpio_to_irq(pdata->uok), ret); + gpiod_to_irq(data->uok), ret); return ret; } } - if (gpio_is_valid(pdata->flt)) { - ret = devm_request_threaded_irq(dev, gpio_to_irq(pdata->flt), + if (data->flt) { + ret = devm_request_threaded_irq(dev, gpiod_to_irq(data->flt), NULL, max8903_fault, IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | IRQF_ONESHOT, "MAX8903 Fault", data); if (ret) { dev_err(dev, "Cannot request irq %d for Fault (%d)\n", - gpio_to_irq(pdata->flt), ret); + gpiod_to_irq(data->flt), ret); return ret; } } diff --git a/drivers/power/supply/max8997_charger.c b/drivers/power/supply/max8997_charger.c index 1947af25879a..321bd6b8ee41 100644 --- a/drivers/power/supply/max8997_charger.c +++ b/drivers/power/supply/max8997_charger.c @@ -6,12 +6,14 @@ // MyungJoo Ham <myungjoo.ham@samsung.com> #include <linux/err.h> +#include <linux/extcon.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/platform_device.h> #include <linux/power_supply.h> #include <linux/mfd/max8997.h> #include <linux/mfd/max8997-private.h> +#include <linux/regulator/consumer.h> /* MAX8997_REG_STATUS4 */ #define DCINOK_SHIFT 1 @@ -31,6 +33,10 @@ struct charger_data { struct device *dev; struct max8997_dev *iodev; struct power_supply *battery; + struct regulator *reg; + struct extcon_dev *edev; + struct notifier_block extcon_nb; + struct work_struct extcon_work; }; static enum power_supply_property max8997_battery_props[] = { @@ -88,6 +94,67 @@ static int max8997_battery_get_property(struct power_supply *psy, return 0; } +static void max8997_battery_extcon_evt_stop_work(void *data) +{ + struct charger_data *charger = data; + + cancel_work_sync(&charger->extcon_work); +} + +static void max8997_battery_extcon_evt_worker(struct work_struct *work) +{ + struct charger_data *charger = + container_of(work, struct charger_data, extcon_work); + struct extcon_dev *edev = charger->edev; + int current_limit; + + if (extcon_get_state(edev, EXTCON_CHG_USB_SDP) > 0) { + dev_dbg(charger->dev, "USB SDP charger is connected\n"); + current_limit = 450000; + } else if (extcon_get_state(edev, EXTCON_CHG_USB_DCP) > 0) { + dev_dbg(charger->dev, "USB DCP charger is connected\n"); + current_limit = 650000; + } else if (extcon_get_state(edev, EXTCON_CHG_USB_FAST) > 0) { + dev_dbg(charger->dev, "USB FAST charger is connected\n"); + current_limit = 650000; + } else if (extcon_get_state(edev, EXTCON_CHG_USB_SLOW) > 0) { + dev_dbg(charger->dev, "USB SLOW charger is connected\n"); + current_limit = 650000; + } else if (extcon_get_state(edev, EXTCON_CHG_USB_CDP) > 0) { + dev_dbg(charger->dev, "USB CDP charger is connected\n"); + current_limit = 650000; + } else { + dev_dbg(charger->dev, "USB charger is disconnected\n"); + current_limit = -1; + } + + if (current_limit > 0) { + int ret = regulator_set_current_limit(charger->reg, current_limit, current_limit); + + if (ret) { + dev_err(charger->dev, "failed to set current limit: %d\n", ret); + return; + } + ret = regulator_enable(charger->reg); + if (ret) + dev_err(charger->dev, "failed to enable regulator: %d\n", ret); + } else { + int ret = regulator_disable(charger->reg); + + if (ret) + dev_err(charger->dev, "failed to disable regulator: %d\n", ret); + } +} + +static int max8997_battery_extcon_evt(struct notifier_block *nb, + unsigned long event, void *param) +{ + struct charger_data *charger = + container_of(nb, struct charger_data, extcon_nb); + schedule_work(&charger->extcon_work); + return NOTIFY_OK; +} + static const struct power_supply_desc max8997_battery_desc = { .name = "max8997_pmic", .type = POWER_SUPPLY_TYPE_BATTERY, @@ -170,6 +237,35 @@ static int max8997_battery_probe(struct platform_device *pdev) return PTR_ERR(charger->battery); } + charger->reg = devm_regulator_get_optional(&pdev->dev, "charger"); + if (IS_ERR(charger->reg)) { + if (PTR_ERR(charger->reg) == -EPROBE_DEFER) + return -EPROBE_DEFER; + dev_info(&pdev->dev, "couldn't get charger regulator\n"); + } + charger->edev = extcon_get_edev_by_phandle(&pdev->dev, 0); + if (IS_ERR(charger->edev)) { + if (PTR_ERR(charger->edev) == -EPROBE_DEFER) + return -EPROBE_DEFER; + dev_info(charger->dev, "couldn't get extcon device\n"); + } + + if (!IS_ERR(charger->reg) && !IS_ERR(charger->edev)) { + INIT_WORK(&charger->extcon_work, max8997_battery_extcon_evt_worker); + ret = devm_add_action(&pdev->dev, max8997_battery_extcon_evt_stop_work, charger); + if (ret) { + dev_err(&pdev->dev, "failed to add extcon evt stop action: %d\n", ret); + return ret; + } + charger->extcon_nb.notifier_call = max8997_battery_extcon_evt; + ret = devm_extcon_register_notifier_all(&pdev->dev, charger->edev, + &charger->extcon_nb); + if (ret) { + dev_err(&pdev->dev, "failed to register extcon notifier\n"); + return ret; + }; + } + return 0; } diff --git a/drivers/power/supply/power_supply_hwmon.c b/drivers/power/supply/power_supply_hwmon.c index 7fe4b6b6ddc8..bffe6d84c429 100644 --- a/drivers/power/supply/power_supply_hwmon.c +++ b/drivers/power/supply/power_supply_hwmon.c @@ -299,13 +299,11 @@ static const struct hwmon_channel_info *power_supply_hwmon_info[] = { HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MIN | - HWMON_T_MIN_ALARM | HWMON_T_MIN_ALARM, HWMON_T_LABEL | HWMON_T_INPUT | HWMON_T_MIN_ALARM | - HWMON_T_LABEL | HWMON_T_MAX_ALARM), HWMON_CHANNEL_INFO(curr, diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c index 92dd63171193..c3d7cbcd4fad 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -374,7 +374,7 @@ static umode_t power_supply_attr_is_visible(struct kobject *kobj, return 0; } -static struct attribute_group power_supply_attr_group = { +static const struct attribute_group power_supply_attr_group = { .attrs = __power_supply_attrs, .is_visible = power_supply_attr_is_visible, }; diff --git a/drivers/power/supply/smb347-charger.c b/drivers/power/supply/smb347-charger.c index d3bf35ed12ce..8cfbd8d6b478 100644 --- a/drivers/power/supply/smb347-charger.c +++ b/drivers/power/supply/smb347-charger.c @@ -137,6 +137,7 @@ * @mains_online: is AC/DC input connected * @usb_online: is USB input connected * @charging_enabled: is charging enabled + * @irq_unsupported: is interrupt unsupported by SMB hardware * @max_charge_current: maximum current (in uA) the battery can be charged * @max_charge_voltage: maximum voltage (in uV) the battery can be charged * @pre_charge_current: current (in uA) to use in pre-charging phase @@ -193,6 +194,7 @@ struct smb347_charger { bool mains_online; bool usb_online; bool charging_enabled; + bool irq_unsupported; unsigned int max_charge_current; unsigned int max_charge_voltage; @@ -862,6 +864,9 @@ static int smb347_irq_set(struct smb347_charger *smb, bool enable) { int ret; + if (smb->irq_unsupported) + return 0; + ret = smb347_set_writable(smb, true); if (ret < 0) return ret; @@ -923,8 +928,6 @@ static int smb347_irq_init(struct smb347_charger *smb, ret = regmap_update_bits(smb->regmap, CFG_STAT, CFG_STAT_ACTIVE_HIGH | CFG_STAT_DISABLED, CFG_STAT_DISABLED); - if (ret < 0) - client->irq = 0; smb347_set_writable(smb, false); @@ -1345,6 +1348,7 @@ static int smb347_probe(struct i2c_client *client, if (ret < 0) { dev_warn(dev, "failed to initialize IRQ: %d\n", ret); dev_warn(dev, "disabling IRQ support\n"); + smb->irq_unsupported = true; } else { smb347_irq_enable(smb); } @@ -1357,8 +1361,8 @@ static int smb347_remove(struct i2c_client *client) { struct smb347_charger *smb = i2c_get_clientdata(client); - if (client->irq) - smb347_irq_disable(smb); + smb347_irq_disable(smb); + return 0; } diff --git a/drivers/power/supply/wm97xx_battery.c b/drivers/power/supply/wm97xx_battery.c index 58f01659daa5..a0e1eaa25d93 100644 --- a/drivers/power/supply/wm97xx_battery.c +++ b/drivers/power/supply/wm97xx_battery.c @@ -15,11 +15,12 @@ #include <linux/wm97xx.h> #include <linux/spinlock.h> #include <linux/interrupt.h> -#include <linux/gpio.h> +#include <linux/gpio/consumer.h> #include <linux/irq.h> #include <linux/slab.h> static struct work_struct bat_work; +static struct gpio_desc *charge_gpiod; static DEFINE_MUTEX(work_lock); static int bat_status = POWER_SUPPLY_STATUS_UNKNOWN; static enum power_supply_property *prop; @@ -96,12 +97,11 @@ static void wm97xx_bat_external_power_changed(struct power_supply *bat_ps) static void wm97xx_bat_update(struct power_supply *bat_ps) { int old_status = bat_status; - struct wm97xx_batt_pdata *pdata = power_supply_get_drvdata(bat_ps); mutex_lock(&work_lock); - bat_status = (pdata->charge_gpio >= 0) ? - (gpio_get_value(pdata->charge_gpio) ? + bat_status = (charge_gpiod) ? + (gpiod_get_value(charge_gpiod) ? POWER_SUPPLY_STATUS_DISCHARGING : POWER_SUPPLY_STATUS_CHARGING) : POWER_SUPPLY_STATUS_UNKNOWN; @@ -171,18 +171,19 @@ static int wm97xx_bat_probe(struct platform_device *dev) if (dev->id != -1) return -EINVAL; - if (gpio_is_valid(pdata->charge_gpio)) { - ret = gpio_request(pdata->charge_gpio, "BATT CHRG"); - if (ret) - goto err; - ret = gpio_direction_input(pdata->charge_gpio); - if (ret) - goto err2; - ret = request_irq(gpio_to_irq(pdata->charge_gpio), + charge_gpiod = devm_gpiod_get_optional(&dev->dev, NULL, GPIOD_IN); + if (IS_ERR(charge_gpiod)) + return dev_err_probe(&dev->dev, + PTR_ERR(charge_gpiod), + "failed to get charge GPIO\n"); + if (charge_gpiod) { + gpiod_set_consumer_name(charge_gpiod, "BATT CHRG"); + ret = request_irq(gpiod_to_irq(charge_gpiod), wm97xx_chrg_irq, 0, "AC Detect", dev); if (ret) - goto err2; + return dev_err_probe(&dev->dev, ret, + "failed to request GPIO irq\n"); props++; /* POWER_SUPPLY_PROP_STATUS */ } @@ -204,7 +205,7 @@ static int wm97xx_bat_probe(struct platform_device *dev) } prop[i++] = POWER_SUPPLY_PROP_PRESENT; - if (pdata->charge_gpio >= 0) + if (charge_gpiod) prop[i++] = POWER_SUPPLY_PROP_STATUS; if (pdata->batt_tech >= 0) prop[i++] = POWER_SUPPLY_PROP_TECHNOLOGY; @@ -242,23 +243,15 @@ static int wm97xx_bat_probe(struct platform_device *dev) err4: kfree(prop); err3: - if (gpio_is_valid(pdata->charge_gpio)) - free_irq(gpio_to_irq(pdata->charge_gpio), dev); -err2: - if (gpio_is_valid(pdata->charge_gpio)) - gpio_free(pdata->charge_gpio); -err: + if (charge_gpiod) + free_irq(gpiod_to_irq(charge_gpiod), dev); return ret; } static int wm97xx_bat_remove(struct platform_device *dev) { - struct wm97xx_batt_pdata *pdata = dev->dev.platform_data; - - if (pdata && gpio_is_valid(pdata->charge_gpio)) { - free_irq(gpio_to_irq(pdata->charge_gpio), dev); - gpio_free(pdata->charge_gpio); - } + if (charge_gpiod) + free_irq(gpiod_to_irq(charge_gpiod), dev); cancel_work_sync(&bat_work); power_supply_unregister(bat_psy); kfree(prop); diff --git a/drivers/power/supply/z2_battery.c b/drivers/power/supply/z2_battery.c index ebd2e42a4457..b1508fe70e5e 100644 --- a/drivers/power/supply/z2_battery.c +++ b/drivers/power/supply/z2_battery.c @@ -6,7 +6,7 @@ */ #include <linux/module.h> -#include <linux/gpio.h> +#include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/irq.h> @@ -18,6 +18,7 @@ struct z2_charger { struct z2_battery_info *info; + struct gpio_desc *charge_gpiod; int bat_status; struct i2c_client *client; struct power_supply *batt_ps; @@ -95,8 +96,8 @@ static void z2_batt_update(struct z2_charger *charger) mutex_lock(&charger->work_lock); - charger->bat_status = (info->charge_gpio >= 0) ? - (gpio_get_value(info->charge_gpio) ? + charger->bat_status = charger->charge_gpiod ? + (gpiod_get_value(charger->charge_gpiod) ? POWER_SUPPLY_STATUS_CHARGING : POWER_SUPPLY_STATUS_DISCHARGING) : POWER_SUPPLY_STATUS_UNKNOWN; @@ -131,7 +132,7 @@ static int z2_batt_ps_init(struct z2_charger *charger, int props) enum power_supply_property *prop; struct z2_battery_info *info = charger->info; - if (info->charge_gpio >= 0) + if (charger->charge_gpiod) props++; /* POWER_SUPPLY_PROP_STATUS */ if (info->batt_tech >= 0) props++; /* POWER_SUPPLY_PROP_TECHNOLOGY */ @@ -147,7 +148,7 @@ static int z2_batt_ps_init(struct z2_charger *charger, int props) return -ENOMEM; prop[i++] = POWER_SUPPLY_PROP_PRESENT; - if (info->charge_gpio >= 0) + if (charger->charge_gpiod) prop[i++] = POWER_SUPPLY_PROP_STATUS; if (info->batt_tech >= 0) prop[i++] = POWER_SUPPLY_PROP_TECHNOLOGY; @@ -206,22 +207,23 @@ static int z2_batt_probe(struct i2c_client *client, mutex_init(&charger->work_lock); - if (info->charge_gpio >= 0 && gpio_is_valid(info->charge_gpio)) { - ret = gpio_request(info->charge_gpio, "BATT CHRG"); - if (ret) - goto err; + charger->charge_gpiod = devm_gpiod_get_optional(&client->dev, + NULL, GPIOD_IN); + if (IS_ERR(charger->charge_gpiod)) + return dev_err_probe(&client->dev, + PTR_ERR(charger->charge_gpiod), + "failed to get charge GPIO\n"); - ret = gpio_direction_input(info->charge_gpio); - if (ret) - goto err2; + if (charger->charge_gpiod) { + gpiod_set_consumer_name(charger->charge_gpiod, "BATT CHRG"); - irq_set_irq_type(gpio_to_irq(info->charge_gpio), + irq_set_irq_type(gpiod_to_irq(charger->charge_gpiod), IRQ_TYPE_EDGE_BOTH); - ret = request_irq(gpio_to_irq(info->charge_gpio), + ret = request_irq(gpiod_to_irq(charger->charge_gpiod), z2_charge_switch_irq, 0, "AC Detect", charger); if (ret) - goto err3; + goto err; } ret = z2_batt_ps_init(charger, props); @@ -245,11 +247,8 @@ static int z2_batt_probe(struct i2c_client *client, err4: kfree(charger->batt_ps_desc.properties); err3: - if (info->charge_gpio >= 0 && gpio_is_valid(info->charge_gpio)) - free_irq(gpio_to_irq(info->charge_gpio), charger); -err2: - if (info->charge_gpio >= 0 && gpio_is_valid(info->charge_gpio)) - gpio_free(info->charge_gpio); + if (charger->charge_gpiod) + free_irq(gpiod_to_irq(charger->charge_gpiod), charger); err: kfree(charger); return ret; @@ -258,16 +257,13 @@ err: static int z2_batt_remove(struct i2c_client *client) { struct z2_charger *charger = i2c_get_clientdata(client); - struct z2_battery_info *info = charger->info; cancel_work_sync(&charger->bat_work); power_supply_unregister(charger->batt_ps); kfree(charger->batt_ps_desc.properties); - if (info->charge_gpio >= 0 && gpio_is_valid(info->charge_gpio)) { - free_irq(gpio_to_irq(info->charge_gpio), charger); - gpio_free(info->charge_gpio); - } + if (charger->charge_gpiod) + free_irq(gpiod_to_irq(charger->charge_gpiod), charger); kfree(charger); diff --git a/include/linux/power/max8903_charger.h b/include/linux/power/max8903_charger.h deleted file mode 100644 index 02f94a1b323b..000000000000 --- a/include/linux/power/max8903_charger.h +++ /dev/null @@ -1,43 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * max8903_charger.h - Maxim 8903 USB/Adapter Charger Driver - * - * Copyright (C) 2011 Samsung Electronics - * MyungJoo Ham <myungjoo.ham@samsung.com> - */ - -#ifndef __MAX8903_CHARGER_H__ -#define __MAX8903_CHARGER_H__ - -struct max8903_pdata { - /* - * GPIOs - * cen, chg, flt, dcm and usus are optional. - * dok and uok are not optional depending on the status of - * dc_valid and usb_valid. - */ - int cen; /* Charger Enable input */ - int dok; /* DC(Adapter) Power OK output */ - int uok; /* USB Power OK output */ - int chg; /* Charger status output */ - int flt; /* Fault output */ - int dcm; /* Current-Limit Mode input (1: DC, 2: USB) */ - int usus; /* USB Suspend Input (1: suspended) */ - - /* - * DC(Adapter/TA) is wired - * When dc_valid is true, - * dok should be valid. - * - * At least one of dc_valid or usb_valid should be true. - */ - bool dc_valid; - /* - * USB is wired - * When usb_valid is true, - * uok should be valid. - */ - bool usb_valid; -}; - -#endif /* __MAX8903_CHARGER_H__ */ diff --git a/include/linux/wm97xx.h b/include/linux/wm97xx.h index 58e082dadc68..462854f4f286 100644 --- a/include/linux/wm97xx.h +++ b/include/linux/wm97xx.h @@ -294,7 +294,6 @@ struct wm97xx { struct wm97xx_batt_pdata { int batt_aux; int temp_aux; - int charge_gpio; int min_voltage; int max_voltage; int batt_div; diff --git a/include/linux/z2_battery.h b/include/linux/z2_battery.h index eaba53ff387c..9e8be7a7cd25 100644 --- a/include/linux/z2_battery.h +++ b/include/linux/z2_battery.h @@ -6,7 +6,6 @@ struct z2_battery_info { int batt_I2C_bus; int batt_I2C_addr; int batt_I2C_reg; - int charge_gpio; int min_voltage; int max_voltage; int batt_div; |