The BQ256XX family of devices are highly integrated buck chargers for single cell batteries. Signed-off-by: Ricardo Rivera-Matos <r-rivera-matos@xxxxxx> v9 - resolves two warnings issued by kernel test robot --- drivers/power/supply/Kconfig | 11 + drivers/power/supply/Makefile | 1 + drivers/power/supply/bq256xx_charger.c | 1745 ++++++++++++++++++++++++ 3 files changed, 1757 insertions(+) create mode 100644 drivers/power/supply/bq256xx_charger.c diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index eec646c568b7..cedef501e683 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -645,6 +645,17 @@ config CHARGER_BQ25980 Say Y to enable support for the TI BQ25980, BQ25975 and BQ25960 series of fast battery chargers. +config CHARGER_BQ256XX + tristate "TI BQ256XX battery charger driver" + depends on I2C + depends on GPIOLIB || COMPILE_TEST + select REGMAP_I2C + help + Say Y to enable support for the TI BQ256XX battery chargers. The + BQ256XX family of devices are highly-integrated, switch-mode battery + charge management and system power path management devices for single + cell Li-ion and Li-polymer batteries. + config CHARGER_SMB347 tristate "Summit Microelectronics SMB3XX Battery Charger" depends on I2C diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index dd4b86318cd9..ae322b1da1ed 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -85,6 +85,7 @@ obj-$(CONFIG_CHARGER_BQ24735) += bq24735-charger.o obj-$(CONFIG_CHARGER_BQ2515X) += bq2515x_charger.o obj-$(CONFIG_CHARGER_BQ25890) += bq25890_charger.o obj-$(CONFIG_CHARGER_BQ25980) += bq25980_charger.o +obj-$(CONFIG_CHARGER_BQ256XX) += bq256xx_charger.o obj-$(CONFIG_CHARGER_SMB347) += smb347-charger.o obj-$(CONFIG_CHARGER_TPS65090) += tps65090-charger.o obj-$(CONFIG_CHARGER_TPS65217) += tps65217_charger.o diff --git a/drivers/power/supply/bq256xx_charger.c b/drivers/power/supply/bq256xx_charger.c new file mode 100644 index 000000000000..32d6e99e0443 --- /dev/null +++ b/drivers/power/supply/bq256xx_charger.c @@ -0,0 +1,1745 @@ +// 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 8 +#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] && + 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@xxxxxx>"); +MODULE_DESCRIPTION("bq256xx charger driver"); +MODULE_LICENSE("GPL v2"); -- 2.30.0
