--- /dev/null
+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)
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.
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.
--- /dev/null
+# 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:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: phandle to the battery node being monitored
+
+ interrupts:
+ maxItems: 1
+ description: |
+ Interrupt sends an active low, 256 μs pulse to host to report the charger
+ device status and faults.
+
+required:
+ - compatible
+ - reg
+ - monitored-battery
+
+additionalProperties: false
+
+examples:
+ - |
+ bat: battery {
+ compatible = "simple-battery";
+ constant-charge-current-max-microamp = <2040000>;
+ constant-charge-voltage-max-microvolt = <4352000>;
+ precharge-current-microamp = <180000>;
+ charge-term-current-microamp = <180000>;
+ };
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ i2c {
+
+ clock-frequency = <400000>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ charger@6b {
+ compatible = "ti,bq25601";
+ reg = <0x6b>;
+ monitored-battery = <&bat>;
+
+ interrupt-parent = <&gpio1>;
+ interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
+ ti,watchdog-timeout-ms = <40000>;
+
+ input-voltage-limit-microvolt = <4500000>;
+ input-current-limit-microamp = <2400000>;
+ };
+ };
+...
--- /dev/null
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2020 Topic Embedded Products
+%YAML 1.2
+---
+$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>;
+ };
+ };
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,
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,
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,
.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,
.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),
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
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
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
action according to the mode.
endif
-
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
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
#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)
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 {
.pmc = {
.mckr = 0x30,
},
+ .ddrc = {
+ .type_offset = AT91_DDRSDRC_MDR,
+ .type_mask = AT91_DDRSDRC_MD
+ },
};
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[] = {
{
.compatible = "microchip,sam9x60-shdwc",
.data = &sam9x60_reg_config,
+ },
+ {
+ .compatible = "microchip,sama7g5-shdwc",
+ .data = &sama7g5_reg_config,
}, {
/*sentinel*/
}
static const struct of_device_id at91_pmc_ids[] = {
{ .compatible = "atmel,sama5d2-pmc" },
{ .compatible = "microchip,sam9x60-pmc" },
+ { .compatible = "microchip,sama7g5-pmc" },
{ /* Sentinel. */ }
};
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:
--- /dev/null
+// 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");
return -EPROBE_DEFER;
phydev = phy_find_first(bus);
+ put_device(&bus->dev);
if (!phydev)
return -EPROBE_DEFER;
+++ /dev/null
-// 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");
config CHARGER_SBS
tristate "SBS Compliant charger"
depends on I2C
+ select REGMAP_I2C
help
Say Y to include support for SBS compliant battery chargers.
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
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.
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
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
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
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-$(CONFIG_CHARGER_TPS65217) += tps65217_charger.o
obj-$(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
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) {
--- /dev/null
+// 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");
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 */
}
}
- 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);
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 = {
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)) {
--- /dev/null
+// 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");
static const struct i2c_device_id bq25980_i2c_ids[] = {
{ "bq25980", BQ25980 },
{ "bq25975", BQ25975 },
- { "bq25975", BQ25975 },
+ { "bq25960", BQ25960 },
{},
};
MODULE_DEVICE_TABLE(i2c, bq25980_i2c_ids);
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 */
[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,
[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,
[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,
[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,
[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,
[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,
[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,
[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,
[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,
[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,
[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,
[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,
[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,
[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,
[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,
[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,
[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,
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,
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,
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,
}
/*
+ * 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.
*/
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;
}
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;
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);
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;
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;
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;
*
* 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.
#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>
enum cpcap_battery_state {
CPCAP_BATTERY_STATE_PREVIOUS,
CPCAP_BATTERY_STATE_LATEST,
+ CPCAP_BATTERY_STATE_EMPTY,
+ CPCAP_BATTERY_STATE_FULL,
CPCAP_BATTERY_STATE_NR,
};
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)
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)
{
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;
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;
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,
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,
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;
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;
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;
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;
val->intval = POWER_SUPPLY_SCOPE_SYSTEM;
break;
case POWER_SUPPLY_PROP_TEMP:
+ if (ignore_temperature_probe)
+ return -ENODATA;
val->intval = latest->temperature;
break;
default:
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,
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;
}
{
switch (psp) {
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
return 1;
default:
return 0;
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",
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 = {};
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) {
* 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)
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;
atomic_t active;
int status;
- int state;
int voltage;
+ int limit_current;
};
struct cpcap_interrupt_desc {
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,
};
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;
&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)
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);
enum power_supply_property psp)
{
switch (psp) {
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
return 1;
default:
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 |
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;
}
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;
}
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);
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);
}
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;
{
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);
{
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);
/* 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;
}
* 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;
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);
}
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",
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,
ddata->dev = &pdev->dev;
ddata->voltage = 4200000;
+ ddata->limit_current = 532000;
ddata->reg = dev_get_regmap(ddata->dev->parent, NULL);
if (!ddata->reg)
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,
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;
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;
}
.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);
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);
}
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);
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;
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);
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;
return 0;
default:
return -EINVAL;
- };
+ }
}
/* Set the most appropriate IIO channel voltage reference scale
--- /dev/null
+// 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");
#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>
* 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;
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;
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;
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");
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;
/* 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");
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;
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;
{
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;
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;
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;
}
}
// 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
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[] = {
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,
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;
}
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,
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,
};
* @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
bool mains_online;
bool usb_online;
bool charging_enabled;
+ bool irq_unsupported;
unsigned int max_charge_current;
unsigned int max_charge_voltage;
{
int ret;
+ if (smb->irq_unsupported)
+ return 0;
+
ret = smb347_set_writable(smb, true);
if (ret < 0)
return ret;
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);
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);
}
{
struct smb347_charger *smb = i2c_get_clientdata(client);
- if (client->irq)
- smb347_irq_disable(smb);
+ smb347_irq_disable(smb);
+
return 0;
}
#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;
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;
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 */
}
}
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;
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);
*/
#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>
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;
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;
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 */
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;
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);
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;
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);
+++ /dev/null
-/* 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__ */
struct wm97xx_batt_pdata {
int batt_aux;
int temp_aux;
- int charge_gpio;
int min_voltage;
int max_voltage;
int batt_div;
int batt_I2C_bus;
int batt_I2C_addr;
int batt_I2C_reg;
- int charge_gpio;
int min_voltage;
int max_voltage;
int batt_div;
projects / platform / kernel / linux-starfive.git / commitdiff