diff options
| -rw-r--r-- | Documentation/devicetree/bindings/regulator/tps62360-regulator.txt | 1 | ||||
| -rw-r--r-- | drivers/regulator/tps62360-regulator.c | 102 | ||||
| -rw-r--r-- | include/linux/regulator/tps62360.h | 2 |
3 files changed, 65 insertions, 40 deletions
diff --git a/Documentation/devicetree/bindings/regulator/tps62360-regulator.txt b/Documentation/devicetree/bindings/regulator/tps62360-regulator.txt index f411b57c7751..c8ca6b8f6582 100644 --- a/Documentation/devicetree/bindings/regulator/tps62360-regulator.txt +++ b/Documentation/devicetree/bindings/regulator/tps62360-regulator.txt @@ -9,7 +9,6 @@ Required properties: - reg: I2C slave address Optional properties: -- ti,enable-force-pwm: Enable force PWM mode. This is boolean value. - ti,enable-vout-discharge: Enable output discharge. This is boolean value. - ti,enable-pull-down: Enable pull down. This is boolean value. - ti,vsel0-gpio: GPIO for controlling VSEL0 line. diff --git a/drivers/regulator/tps62360-regulator.c b/drivers/regulator/tps62360-regulator.c index e6e33beb72b0..b5be0d0f9f12 100644 --- a/drivers/regulator/tps62360-regulator.c +++ b/drivers/regulator/tps62360-regulator.c @@ -49,6 +49,8 @@ #define REG_RAMPCTRL 6 #define REG_CHIPID 8 +#define FORCE_PWM_ENABLE BIT(7) + enum chips {TPS62360, TPS62361, TPS62362, TPS62363}; #define TPS62360_BASE_VOLTAGE 770000 @@ -69,7 +71,6 @@ struct tps62360_chip { int voltage_base; u8 voltage_reg_mask; bool en_internal_pulldn; - bool en_force_pwm; bool en_discharge; bool valid_gpios; int lru_index[4]; @@ -191,37 +192,81 @@ static int tps62360_set_voltage_time_sel(struct regulator_dev *rdev, return DIV_ROUND_UP(abs(old_uV - new_uV), tps->change_uv_per_us); } +static int tps62360_set_mode(struct regulator_dev *rdev, unsigned int mode) +{ + struct tps62360_chip *tps = rdev_get_drvdata(rdev); + int i; + int val; + int ret; + + /* Enable force PWM mode in FAST mode only. */ + switch (mode) { + case REGULATOR_MODE_FAST: + val = FORCE_PWM_ENABLE; + break; + + case REGULATOR_MODE_NORMAL: + val = 0; + break; + + default: + return -EINVAL; + } + + if (!tps->valid_gpios) { + ret = regmap_update_bits(tps->regmap, + REG_VSET0 + tps->curr_vset_id, FORCE_PWM_ENABLE, val); + if (ret < 0) + dev_err(tps->dev, + "%s(): register %d update failed with err %d\n", + __func__, REG_VSET0 + tps->curr_vset_id, ret); + return ret; + } + + /* If gpios are valid then all register set need to be control */ + for (i = 0; i < 4; ++i) { + ret = regmap_update_bits(tps->regmap, + REG_VSET0 + i, FORCE_PWM_ENABLE, val); + if (ret < 0) { + dev_err(tps->dev, + "%s(): register %d update failed with err %d\n", + __func__, REG_VSET0 + i, ret); + return ret; + } + } + return ret; +} + +static unsigned int tps62360_get_mode(struct regulator_dev *rdev) +{ + struct tps62360_chip *tps = rdev_get_drvdata(rdev); + unsigned int data; + int ret; + + ret = regmap_read(tps->regmap, REG_VSET0 + tps->curr_vset_id, &data); + if (ret < 0) { + dev_err(tps->dev, "%s(): register %d read failed with err %d\n", + __func__, REG_VSET0 + tps->curr_vset_id, ret); + return ret; + } + return (data & FORCE_PWM_ENABLE) ? + REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL; +} + static struct regulator_ops tps62360_dcdc_ops = { .get_voltage_sel = tps62360_dcdc_get_voltage_sel, .set_voltage_sel = tps62360_dcdc_set_voltage_sel, .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .set_voltage_time_sel = tps62360_set_voltage_time_sel, + .set_mode = tps62360_set_mode, + .get_mode = tps62360_get_mode, }; -static int __devinit tps62360_init_force_pwm(struct tps62360_chip *tps, - struct tps62360_regulator_platform_data *pdata, - int vset_id) -{ - int ret; - int bit = 0; - - if (pdata->en_force_pwm) - bit = BIT(7); - - ret = regmap_update_bits(tps->regmap, REG_VSET0 + vset_id, BIT(7), bit); - if (ret < 0) - dev_err(tps->dev, - "%s(): register %d update failed with err %d\n", - __func__, REG_VSET0 + vset_id, ret); - return ret; -} - static int __devinit tps62360_init_dcdc(struct tps62360_chip *tps, struct tps62360_regulator_platform_data *pdata) { int ret; - int i; unsigned int ramp_ctrl; /* Initialize internal pull up/down control */ @@ -236,19 +281,6 @@ static int __devinit tps62360_init_dcdc(struct tps62360_chip *tps, return ret; } - /* Initialize force PWM mode */ - if (tps->valid_gpios) { - for (i = 0; i < 4; ++i) { - ret = tps62360_init_force_pwm(tps, pdata, i); - if (ret < 0) - return ret; - } - } else { - ret = tps62360_init_force_pwm(tps, pdata, tps->curr_vset_id); - if (ret < 0) - return ret; - } - /* Reset output discharge path to reduce power consumption */ ret = regmap_update_bits(tps->regmap, REG_RAMPCTRL, BIT(2), 0); if (ret < 0) { @@ -310,9 +342,6 @@ static struct tps62360_regulator_platform_data * if (of_find_property(np, "ti,enable-pull-down", NULL)) pdata->en_internal_pulldn = true; - if (of_find_property(np, "ti,enable-force-pwm", NULL)) - pdata->en_force_pwm = true; - if (of_find_property(np, "ti,enable-vout-discharge", NULL)) pdata->en_discharge = true; @@ -370,7 +399,6 @@ static int __devinit tps62360_probe(struct i2c_client *client, return -ENOMEM; } - tps->en_force_pwm = pdata->en_force_pwm; tps->en_discharge = pdata->en_discharge; tps->en_internal_pulldn = pdata->en_internal_pulldn; tps->vsel0_gpio = pdata->vsel0_gpio; diff --git a/include/linux/regulator/tps62360.h b/include/linux/regulator/tps62360.h index 5e11d5055643..a4c49394c497 100644 --- a/include/linux/regulator/tps62360.h +++ b/include/linux/regulator/tps62360.h @@ -30,7 +30,6 @@ * struct tps62360_regulator_platform_data - tps62360 regulator platform data. * * @reg_init_data: The regulator init data. - * @en_force_pwm: Enable force pwm or not. * @en_discharge: Enable discharge the output capacitor via internal * register. * @en_internal_pulldn: internal pull down enable or not. @@ -43,7 +42,6 @@ */ struct tps62360_regulator_platform_data { struct regulator_init_data *reg_init_data; - bool en_force_pwm; bool en_discharge; bool en_internal_pulldn; int vsel0_gpio; |