Hi, On Wed, Jun 03, 2026 at 12:10:55AM +0400, Alexey Charkov wrote: > Add support for TI BQ25792 integrated battery charger and buck-boost > converter. > > It shares high-level logic of operation with the already supported > BQ25703A, but has a different register map, bit definitions and some of > the lower-level hardware states. > > Signed-off-by: Alexey Charkov > --- Reviewed-by: Sebastian Reichel This has to wait a cycle as it does not apply due to the MFD header change. Greetings, -- Sebastian > drivers/power/supply/bq257xx_charger.c | 528 ++++++++++++++++++++++++++++++++- > include/linux/mfd/bq257xx.h | 14 + > 2 files changed, 541 insertions(+), 1 deletion(-) > > diff --git a/drivers/power/supply/bq257xx_charger.c b/drivers/power/supply/bq257xx_charger.c > index 9c082865e745..7d02169248b1 100644 > --- a/drivers/power/supply/bq257xx_charger.c > +++ b/drivers/power/supply/bq257xx_charger.c > @@ -5,6 +5,7 @@ > */ > > #include > +#include > #include > #include > #include > @@ -88,6 +89,53 @@ struct bq257xx_chg { > u32 vsys_min; > }; > > +/** > + * bq25792_read16() - Read a 16-bit value from device register > + * @pdata: driver platform data > + * @reg: register address to read from > + * @val: pointer to store the register value > + * > + * Read a 16-bit big-endian value from the BQ25792 device via regmap > + * and convert to CPU byte order. > + * > + * Return: Returns 0 on success or error on failure to read. > + */ > +static int bq25792_read16(struct bq257xx_chg *pdata, unsigned int reg, u16 *val) > +{ > + __be16 regval; > + int ret; > + > + ret = regmap_raw_read(pdata->bq->regmap, reg, ®val, sizeof(regval)); > + if (ret) > + return ret; > + > + *val = be16_to_cpu(regval); > + return 0; > +} > + > +/** > + * bq25792_write16() - Write a 16-bit value to device register > + * @pdata: driver platform data > + * @reg: register address to write to > + * @val: 16-bit value to write in CPU byte order > + * > + * Convert the value to big-endian and write a 16-bit value to the > + * BQ25792 device via regmap. > + * > + * Return: Returns 0 on success or error on failure to write. > + */ > +static int bq25792_write16(struct bq257xx_chg *pdata, unsigned int reg, u16 val) > +{ > + __be16 regval = cpu_to_be16(val); > + int ret; > + > + ret = regmap_raw_write(pdata->bq->regmap, reg, ®val, sizeof(regval)); > + if (ret) > + return ret; > + > + return 0; > +} > + > /** > * bq25703_get_state() - Get the current state of the device > * @pdata: driver platform data > @@ -119,6 +167,43 @@ static int bq25703_get_state(struct bq257xx_chg *pdata) > return 0; > } > > +/** > + * bq25792_get_state() - Get the current state of the device > + * @pdata: driver platform data > + * > + * Get the current state of the BQ25792 charger by reading status > + * registers. Updates the online, charging, overvoltage, and fault > + * status fields in the driver data structure. > + * > + * Return: Returns 0 on success or error on failure to read device. > + */ > +static int bq25792_get_state(struct bq257xx_chg *pdata) > +{ > + unsigned int reg; > + int ret; > + > + ret = regmap_read(pdata->bq->regmap, BQ25792_REG1B_CHARGER_STATUS_0, ®); > + if (ret) > + return ret; > + > + pdata->online = reg & BQ25792_REG1B_PG_STAT; > + > + ret = regmap_read(pdata->bq->regmap, BQ25792_REG1C_CHARGER_STATUS_1, ®); > + if (ret) > + return ret; > + > + pdata->charging = reg & BQ25792_REG1C_CHG_STAT_MASK; > + > + ret = regmap_read(pdata->bq->regmap, BQ25792_REG20_FAULT_STATUS_0, ®); > + if (ret) > + return ret; > + > + pdata->overvoltage = reg & BQ25792_REG20_OVERVOLTAGE_MASK; > + pdata->oc_fault = reg & BQ25792_REG20_OVERCURRENT_MASK; > + > + return 0; > +} > + > /** > * bq25703_get_min_vsys() - Get the minimum system voltage > * @pdata: driver platform data > @@ -142,6 +227,31 @@ static int bq25703_get_min_vsys(struct bq257xx_chg *pdata, int *intval) > return ret; > } > > +/** > + * bq25792_get_min_vsys() - Get the minimum system voltage > + * @pdata: driver platform data > + * @intval: pointer to store the minimum voltage value > + * > + * Read the current minimum system voltage setting from the device > + * and return it in microvolts. > + * > + * Return: Returns 0 on success or error on failure to read. > + */ > +static int bq25792_get_min_vsys(struct bq257xx_chg *pdata, int *intval) > +{ > + unsigned int reg; > + int ret; > + > + ret = regmap_read(pdata->bq->regmap, BQ25792_REG00_MIN_SYS_VOLTAGE, ®); > + if (ret) > + return ret; > + > + reg = FIELD_GET(BQ25792_REG00_VSYSMIN_MASK, reg); > + *intval = (reg * BQ25792_MINVSYS_STEP_UV) + BQ25792_MINVSYS_MIN_UV; > + > + return ret; > +} > + > /** > * bq25703_set_min_vsys() - Set the minimum system voltage > * @pdata: driver platform data > @@ -166,6 +276,29 @@ static int bq25703_set_min_vsys(struct bq257xx_chg *pdata, int vsys) > reg); > } > > +/** > + * bq25792_set_min_vsys() - Set the minimum system voltage > + * @pdata: driver platform data > + * @vsys: voltage value to set in uV > + * > + * Set the minimum system voltage by clamping the requested value > + * between device limits and writing to the appropriate register. > + * > + * Return: Returns 0 on success or error on failure to write. > + */ > +static int bq25792_set_min_vsys(struct bq257xx_chg *pdata, int vsys) > +{ > + unsigned int reg; > + int vsys_min = pdata->vsys_min; > + > + vsys = clamp(vsys, vsys_min, BQ25792_MINVSYS_MAX_UV); > + reg = ((vsys - BQ25792_MINVSYS_MIN_UV) / BQ25792_MINVSYS_STEP_UV); > + reg = FIELD_PREP(BQ25792_REG00_VSYSMIN_MASK, reg); > + > + return regmap_write(pdata->bq->regmap, > + BQ25792_REG00_MIN_SYS_VOLTAGE, reg); > +} > + > /** > * bq25703_get_cur() - Get the reported current from the battery > * @pdata: driver platform data > @@ -195,6 +328,30 @@ static int bq25703_get_cur(struct bq257xx_chg *pdata, int *intval) > return ret; > } > > +/** > + * bq25792_get_cur() - Get the reported current from the battery > + * @pdata: driver platform data > + * @intval: pointer to store the battery current value > + * > + * Read the current ADC value from the device representing the battery > + * charge or discharge current and return it in microamps. > + * > + * Return: Returns 0 on success or error on failure to read. > + */ > +static int bq25792_get_cur(struct bq257xx_chg *pdata, int *intval) > +{ > + u16 reg; > + int ret; > + > + ret = bq25792_read16(pdata, BQ25792_REG33_IBAT_ADC, ®); > + if (ret < 0) > + return ret; > + > + *intval = (s16)reg * BQ25792_ADCIBAT_STEP_UA; > + > + return ret; > +} > + > /** > * bq25703_get_ichg_cur() - Get the maximum reported charge current > * @pdata: driver platform data > @@ -218,6 +375,30 @@ static int bq25703_get_ichg_cur(struct bq257xx_chg *pdata, int *intval) > return ret; > } > > +/** > + * bq25792_get_ichg_cur() - Get the maximum reported charge current > + * @pdata: driver platform data > + * @intval: pointer to store the maximum charge current value > + * > + * Read the programmed maximum charge current limit from the device. > + * > + * Return: Returns 0 on success or error on failure to read value. > + */ > +static int bq25792_get_ichg_cur(struct bq257xx_chg *pdata, int *intval) > +{ > + u16 reg; > + int ret; > + > + ret = bq25792_read16(pdata, BQ25792_REG03_CHARGE_CURRENT_LIMIT, ®); > + if (ret) > + return ret; > + > + *intval = FIELD_GET(BQ25792_REG03_ICHG_MASK, reg) * > + BQ25792_ICHG_STEP_UA; > + > + return ret; > +} > + > /** > * bq25703_set_ichg_cur() - Set the maximum charge current > * @pdata: driver platform data > @@ -242,6 +423,28 @@ static int bq25703_set_ichg_cur(struct bq257xx_chg *pdata, int ichg) > reg); > } > > +/** > + * bq25792_set_ichg_cur() - Set the maximum charge current > + * @pdata: driver platform data > + * @ichg: current value to set in uA > + * > + * Set the maximum charge current by clamping the requested value > + * between device limits and writing to the appropriate register. > + * > + * Return: Returns 0 on success or error on failure to write. > + */ > +static int bq25792_set_ichg_cur(struct bq257xx_chg *pdata, int ichg) > +{ > + int ichg_max = pdata->ichg_max; > + u16 reg; > + > + ichg = clamp(ichg, BQ25792_ICHG_MIN_UA, ichg_max); > + reg = FIELD_PREP(BQ25792_REG03_ICHG_MASK, > + (ichg / BQ25792_ICHG_STEP_UA)); > + > + return bq25792_write16(pdata, BQ25792_REG03_CHARGE_CURRENT_LIMIT, reg); > +} > + > /** > * bq25703_get_chrg_volt() - Get the maximum set charge voltage > * @pdata: driver platform data > @@ -265,6 +468,30 @@ static int bq25703_get_chrg_volt(struct bq257xx_chg *pdata, int *intval) > return ret; > } > > +/** > + * bq25792_get_chrg_volt() - Get the maximum set charge voltage > + * @pdata: driver platform data > + * @intval: pointer to store the maximum charge voltage value > + * > + * Read the current charge voltage limit from the device. > + * > + * Return: Returns 0 on success or error on failure to read value. > + */ > +static int bq25792_get_chrg_volt(struct bq257xx_chg *pdata, int *intval) > +{ > + u16 reg; > + int ret; > + > + ret = bq25792_read16(pdata, BQ25792_REG01_CHARGE_VOLTAGE_LIMIT, ®); > + if (ret) > + return ret; > + > + *intval = FIELD_GET(BQ25792_REG01_VREG_MASK, reg) * > + BQ25792_VBATREG_STEP_UV; > + > + return ret; > +} > + > /** > * bq25703_set_chrg_volt() - Set the maximum charge voltage > * @pdata: driver platform data > @@ -291,6 +518,29 @@ static int bq25703_set_chrg_volt(struct bq257xx_chg *pdata, int vbat) > reg); > } > > +/** > + * bq25792_set_chrg_volt() - Set the maximum charge voltage > + * @pdata: driver platform data > + * @vbat: voltage value to set in uV > + * > + * Set the maximum charge voltage by clamping the requested value > + * between device limits and writing to the appropriate register. > + * > + * Return: Returns 0 on success or error on failure to write. > + */ > +static int bq25792_set_chrg_volt(struct bq257xx_chg *pdata, int vbat) > +{ > + int vbat_max = pdata->vbat_max; > + u16 reg; > + > + vbat = clamp(vbat, BQ25792_VBATREG_MIN_UV, vbat_max); > + > + reg = FIELD_PREP(BQ25792_REG01_VREG_MASK, > + (vbat / BQ25792_VBATREG_STEP_UV)); > + > + return bq25792_write16(pdata, BQ25792_REG01_CHARGE_VOLTAGE_LIMIT, reg); > +} > + > /** > * bq25703_get_iindpm() - Get the maximum set input current > * @pdata: driver platform data > @@ -319,6 +569,30 @@ static int bq25703_get_iindpm(struct bq257xx_chg *pdata, int *intval) > return ret; > } > > +/** > + * bq25792_get_iindpm() - Get the maximum set input current > + * @pdata: driver platform data > + * @intval: pointer to store the maximum input current value > + * > + * Read the current input current limit from the device. > + * > + * Return: Returns 0 on success or error on failure to read value. > + */ > +static int bq25792_get_iindpm(struct bq257xx_chg *pdata, int *intval) > +{ > + u16 reg; > + int ret; > + > + ret = bq25792_read16(pdata, BQ25792_REG06_INPUT_CURRENT_LIMIT, ®); > + if (ret) > + return ret; > + > + reg = FIELD_GET(BQ25792_REG06_IINDPM_MASK, reg); > + *intval = reg * BQ25792_IINDPM_STEP_UA; > + > + return ret; > +} > + > /** > * bq25703_set_iindpm() - Set the maximum input current > * @pdata: driver platform data > @@ -344,6 +618,29 @@ static int bq25703_set_iindpm(struct bq257xx_chg *pdata, int iindpm) > FIELD_PREP(BQ25703_IINDPM_MASK, reg)); > } > > +/** > + * bq25792_set_iindpm() - Set the maximum input current > + * @pdata: driver platform data > + * @iindpm: current value in uA > + * > + * Set the maximum input current by clamping the requested value > + * between device limits and writing to the appropriate register. > + * > + * Return: Returns 0 on success or error on failure to write. > + */ > +static int bq25792_set_iindpm(struct bq257xx_chg *pdata, int iindpm) > +{ > + u16 reg; > + int iindpm_max = pdata->iindpm_max; > + > + iindpm = clamp(iindpm, BQ25792_IINDPM_MIN_UA, iindpm_max); > + > + reg = iindpm / BQ25792_IINDPM_STEP_UA; > + > + return bq25792_write16(pdata, BQ25792_REG06_INPUT_CURRENT_LIMIT, > + FIELD_PREP(BQ25792_REG06_IINDPM_MASK, reg)); > +} > + > /** > * bq25703_get_vbat() - Get the reported voltage from the battery > * @pdata: driver platform data > @@ -368,6 +665,30 @@ static int bq25703_get_vbat(struct bq257xx_chg *pdata, int *intval) > return ret; > } > > +/** > + * bq25792_get_vbat() - Get the reported voltage from the battery > + * @pdata: driver platform data > + * @intval: pointer to store the battery voltage value > + * > + * Read the current ADC value representing the battery voltage > + * and return it in microvolts. > + * > + * Return: Returns 0 on success or error on failure to read value. > + */ > +static int bq25792_get_vbat(struct bq257xx_chg *pdata, int *intval) > +{ > + u16 reg; > + int ret; > + > + ret = bq25792_read16(pdata, BQ25792_REG3B_VBAT_ADC, ®); > + if (ret) > + return ret; > + > + *intval = reg * BQ25792_ADCVSYSVBAT_STEP_UV; > + > + return ret; > +} > + > /** > * bq25703_hw_init() - Set all the required registers to init the charger > * @pdata: driver platform data > @@ -434,6 +755,108 @@ static int bq25703_hw_init(struct bq257xx_chg *pdata) > return ret; > } > > +/** > + * bq25792_hw_init() - Initialize BQ25792 hardware > + * @pdata: driver platform data > + * > + * Initialize the BQ25792 by disabling the watchdog, enabling discharge > + * current sensing with 5A limit, and configuring input current regulation. > + * Set the charge current, charge voltage, minimum system voltage, and > + * input current limit from platform data. Enable and configure the ADC > + * to measure all available channels. > + * > + * Return: Returns 0 on success or error code on error. > + */ > +static int bq25792_hw_init(struct bq257xx_chg *pdata) > +{ > + struct regmap *regmap = pdata->bq->regmap; > + int ret = 0; > + u8 reg; > + > + /* Disable watchdog (TODO: make it work instead) */ > + ret = regmap_write(regmap, BQ25792_REG10_CHARGER_CONTROL_1, 0); > + if (ret) > + return ret; > + > + /* > + * Enable battery discharge current sensing, 5A discharge current > + * limit, input current regulation and ship FET functions > + */ > + ret = regmap_write(regmap, BQ25792_REG14_CHARGER_CONTROL_5, > + BQ25792_REG14_SFET_PRESENT | > + BQ25792_REG14_EN_IBAT | > + BQ25792_IBAT_5A | > + BQ25792_REG14_EN_IINDPM); > + if (ret) > + return ret; > + > + if (pdata->vbat_max < 5000000) { > + /* 1S batteries */ > + reg = FIELD_PREP(BQ25792_REG0A_CELL_MASK, BQ25792_CELL_1S); > + } else if (pdata->vbat_max < 10000000) { > + /* 2S batteries */ > + reg = FIELD_PREP(BQ25792_REG0A_CELL_MASK, BQ25792_CELL_2S); > + } else if (pdata->vbat_max < 14000000) { > + /* 3S batteries */ > + reg = FIELD_PREP(BQ25792_REG0A_CELL_MASK, BQ25792_CELL_3S); > + } else { > + /* 4S batteries */ > + reg = FIELD_PREP(BQ25792_REG0A_CELL_MASK, BQ25792_CELL_4S); > + } > + > + /* Recharge voltage detection deglitch time (default 1024ms) */ > + reg |= FIELD_PREP(BQ25792_REG0A_TRECHG_MASK, BQ25792_TRECHG_1024MS); > + > + /* Recharge voltage offset: 5% of the set charge voltage */ > + reg |= FIELD_PREP(BQ25792_REG0A_VRECHG_MASK, > + (pdata->vbat_max / 20 - BQ25792_VRECHG_MIN_UV) / BQ25792_VRECHG_STEP_UV); > + > + ret = regmap_write(regmap, BQ25792_REG0A_RECHARGE_CONTROL, reg); > + if (ret) > + return ret; > + > + ret = pdata->chip->bq257xx_set_ichg(pdata, pdata->ichg_max); > + if (ret) > + return ret; > + > + ret = pdata->chip->bq257xx_set_vbatreg(pdata, pdata->vbat_max); > + if (ret) > + return ret; > + > + ret = bq25792_set_min_vsys(pdata, pdata->vsys_min); > + if (ret) > + return ret; > + > + ret = pdata->chip->bq257xx_set_iindpm(pdata, pdata->iindpm_max); > + if (ret) > + return ret; > + > + /* Enable the Input Current Optimizer (the rest is at POR value) */ > + ret = regmap_write(regmap, BQ25792_REG0F_CHARGER_CONTROL_0, > + BQ25792_REG0F_EN_AUTO_IBATDIS | > + BQ25792_REG0F_EN_CHG | > + BQ25792_REG0F_EN_ICO | > + BQ25792_REG0F_EN_TERM); > + if (ret) > + return ret; > + > + /* Enable the ADC. */ > + ret = regmap_write(regmap, BQ25792_REG2E_ADC_CONTROL, BQ25792_REG2E_ADC_EN); > + if (ret) > + return ret; > + > + /* Clear per-channel ADC disable bits - enable all channels */ > + ret = regmap_write(regmap, BQ25792_REG2F_ADC_FUNCTION_DISABLE_0, 0); > + if (ret) > + return ret; > + > + ret = regmap_write(regmap, BQ25792_REG30_ADC_FUNCTION_DISABLE_1, 0); > + if (ret) > + return ret; > + > + return ret; > +} > + > /** > * bq25703_hw_shutdown() - Set registers for shutdown > * @pdata: driver platform data > @@ -446,6 +869,30 @@ static void bq25703_hw_shutdown(struct bq257xx_chg *pdata) > BQ25703_EN_LWPWR, BQ25703_EN_LWPWR); > } > > +/** > + * bq25792_hw_shutdown() - Shutdown BQ25792 hardware > + * @pdata: driver platform data > + * > + * Perform hardware shutdown for the BQ25792. Currently a no-op > + * as the device does not require special shutdown configuration. > + */ > +static void bq25792_hw_shutdown(struct bq257xx_chg *pdata) > +{ > + /* Nothing to do here */ > +} > + > +/** > + * bq257xx_set_charger_property() - Set a power supply property > + * @psy: power supply device > + * @prop: power supply property to set > + * @val: value to set for the property > + * > + * Handle requests to set power supply properties such as input current > + * limit, constant charge voltage, and constant charge current. Routes > + * the request to the chip-specific implementation. > + * > + * Return: Returns 0 on success or -EINVAL if property is not supported. > + */ > static int bq257xx_set_charger_property(struct power_supply *psy, > enum power_supply_property prop, > const union power_supply_propval *val) > @@ -469,6 +916,19 @@ static int bq257xx_set_charger_property(struct power_supply *psy, > return -EINVAL; > } > > +/** > + * bq257xx_get_charger_property() - Get a power supply property > + * @psy: power supply device > + * @psp: power supply property to get > + * @val: pointer to store the property value > + * > + * Handle requests to get power supply properties, including status, > + * health, manufacturer, online state, and various voltage/current > + * measurements. Reads current device state and routes chip-specific > + * property requests to appropriate handlers. > + * > + * Return: Returns 0 on success or -EINVAL if property is not supported. > + */ > static int bq257xx_get_charger_property(struct power_supply *psy, > enum power_supply_property psp, > union power_supply_propval *val) > @@ -550,6 +1010,17 @@ static enum power_supply_property bq257xx_power_supply_props[] = { > POWER_SUPPLY_PROP_USB_TYPE, > }; > > +/** > + * bq257xx_property_is_writeable() - Check if a property is writeable > + * @psy: power supply device > + * @prop: power supply property to check > + * > + * Determines which power supply properties can be written to. Only > + * charge current limit, charge voltage limit, and input current > + * limit are writeable. > + * > + * Return: Returns 1 if property is writeable, 0 otherwise. > + */ > static int bq257xx_property_is_writeable(struct power_supply *psy, > enum power_supply_property prop) > { > @@ -622,6 +1093,17 @@ static void bq257xx_external_power_changed(struct power_supply *psy) > power_supply_changed(psy); > } > > +/** > + * bq257xx_irq_handler_thread() - Handle charger interrupt > + * @irq: interrupt number > + * @private: pointer to driver private data > + * > + * Thread handler for charger interrupts. Triggers re-evaluation of > + * external power status and updates power supply state in response > + * to charger events. > + * > + * Return: Returns IRQ_HANDLED if interrupt was processed. > + */ > static irqreturn_t bq257xx_irq_handler_thread(int irq, void *private) > { > struct bq257xx_chg *pdata = private; > @@ -662,6 +1144,22 @@ static const struct bq257xx_chip_info bq25703_chip_info = { > .bq257xx_get_min_vsys = &bq25703_get_min_vsys, > }; > > +static const struct bq257xx_chip_info bq25792_chip_info = { > + .default_iindpm_uA = BQ25792_IINDPM_DEFAULT_UA, > + .bq257xx_hw_init = &bq25792_hw_init, > + .bq257xx_hw_shutdown = &bq25792_hw_shutdown, > + .bq257xx_get_state = &bq25792_get_state, > + .bq257xx_get_ichg = &bq25792_get_ichg_cur, > + .bq257xx_set_ichg = &bq25792_set_ichg_cur, > + .bq257xx_get_vbatreg = &bq25792_get_chrg_volt, > + .bq257xx_set_vbatreg = &bq25792_set_chrg_volt, > + .bq257xx_get_iindpm = &bq25792_get_iindpm, > + .bq257xx_set_iindpm = &bq25792_set_iindpm, > + .bq257xx_get_cur = &bq25792_get_cur, > + .bq257xx_get_vbat = &bq25792_get_vbat, > + .bq257xx_get_min_vsys = &bq25792_get_min_vsys, > +}; > + > /** > * bq257xx_parse_dt() - Parse the device tree for required properties > * @pdata: driver platform data > @@ -707,6 +1205,17 @@ static int bq257xx_parse_dt(struct bq257xx_chg *pdata, > return 0; > } > > +/** > + * bq257xx_charger_probe() - Probe routine for charger platform device > + * @pdev: platform device > + * > + * Probe the charger device, allocate driver data structure, select the > + * appropriate chip-specific function pointers, register the power supply, > + * parse device tree properties for battery limits, initialize hardware, > + * and set up the interrupt handler if available. > + * > + * Return: Returns 0 on success or error code on failure. > + */ > static int bq257xx_charger_probe(struct platform_device *pdev) > { > struct device *dev = &pdev->dev; > @@ -722,7 +1231,17 @@ static int bq257xx_charger_probe(struct platform_device *pdev) > return -ENOMEM; > > pdata->bq = bq; > - pdata->chip = &bq25703_chip_info; > + > + switch (bq->type) { > + case BQ25703A: > + pdata->chip = &bq25703_chip_info; > + break; > + case BQ25792: > + pdata->chip = &bq25792_chip_info; > + break; > + default: > + return dev_err_probe(dev, -EINVAL, "Unknown chip type\n"); > + } > > platform_set_drvdata(pdev, pdata); > > @@ -760,6 +1279,13 @@ static int bq257xx_charger_probe(struct platform_device *pdev) > return ret; > } > > +/** > + * bq257xx_charger_shutdown() - Shutdown routine for charger platform device > + * @pdev: platform device > + * > + * Called during system shutdown to perform charger cleanup, including > + * disabling watchdog timers or other chip-specific shutdown procedures. > + */ > static void bq257xx_charger_shutdown(struct platform_device *pdev) > { > struct bq257xx_chg *pdata = platform_get_drvdata(pdev); > diff --git a/include/linux/mfd/bq257xx.h b/include/linux/mfd/bq257xx.h > index 4ec72eb920f2..379ef4ee8291 100644 > --- a/include/linux/mfd/bq257xx.h > +++ b/include/linux/mfd/bq257xx.h > @@ -200,6 +200,20 @@ > #define BQ25792_REG0A_TRECHG_MASK GENMASK(5, 4) > #define BQ25792_REG0A_VRECHG_MASK GENMASK(3, 0) > > +#define BQ25792_CELL_1S 0 > +#define BQ25792_CELL_2S 1 > +#define BQ25792_CELL_3S 2 > +#define BQ25792_CELL_4S 3 > + > +#define BQ25792_TRECHG_64MS 0 > +#define BQ25792_TRECHG_256MS 1 > +#define BQ25792_TRECHG_1024MS 2 > +#define BQ25792_TRECHG_2048MS 3 > + > +#define BQ25792_VRECHG_MIN_UV 50000 > +#define BQ25792_VRECHG_STEP_UV 50000 > +#define BQ25792_VRECHG_MAX_UV 800000 > + > /* VOTG regulation */ > #define BQ25792_REG0B_VOTG_MASK GENMASK(10, 0) > > > -- > 2.53.0 >