diff options
Diffstat (limited to 'drivers/regulator/sy7636a-regulator.c')
| -rw-r--r-- | drivers/regulator/sy7636a-regulator.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/regulator/sy7636a-regulator.c b/drivers/regulator/sy7636a-regulator.c index 27e3d939b7bb..551647bc1052 100644 --- a/drivers/regulator/sy7636a-regulator.c +++ b/drivers/regulator/sy7636a-regulator.c @@ -12,6 +12,7 @@ #include <linux/mfd/sy7636a.h> #include <linux/module.h> #include <linux/platform_device.h> +#include <linux/regulator/consumer.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/regmap.h> @@ -19,6 +20,8 @@ struct sy7636a_data { struct regmap *regmap; struct gpio_desc *pgood_gpio; + struct gpio_desc *en_gpio; + struct gpio_desc *vcom_en_gpio; }; static int sy7636a_get_vcom_voltage_op(struct regulator_dev *rdev) @@ -98,6 +101,30 @@ static int sy7636a_regulator_probe(struct platform_device *pdev) data->regmap = regmap; data->pgood_gpio = gdp; + ret = devm_regulator_get_enable_optional(&pdev->dev, "vin"); + if (ret) + return dev_err_probe(&pdev->dev, ret, + "failed to get vin regulator\n"); + + data->en_gpio = devm_gpiod_get_optional(&pdev->dev, "enable", + GPIOD_OUT_HIGH); + if (IS_ERR(data->en_gpio)) + return dev_err_probe(&pdev->dev, + PTR_ERR(data->en_gpio), + "failed to get en gpio\n"); + + /* Let VCOM just follow the default power on sequence */ + data->vcom_en_gpio = devm_gpiod_get_optional(&pdev->dev, + "vcom-en", GPIOD_OUT_LOW); + if (IS_ERR(data->vcom_en_gpio)) + return dev_err_probe(&pdev->dev, + PTR_ERR(data->vcom_en_gpio), + "failed to get vcom-en gpio\n"); + + /* if chip was not enabled, give it time to wake up */ + if (data->en_gpio) + usleep_range(2500, 4000); + platform_set_drvdata(pdev, data); ret = regmap_write(regmap, SY7636A_REG_POWER_ON_DELAY_TIME, 0x0); |