On Thu, 1 Aug 2019 15:36:19 +0800
Chuhong Yuan <hslester96@xxxxxxxxx> wrote:
> Use regulator_bulk_() APIs to shrink driver size.
>
> Signed-off-by: Chuhong Yuan <hslester96@xxxxxxxxx>
Applied to the togreg branch of iio.git and pushed out as testing
for the autobuilders to play with it.
Thanks,
Jonathan
> ---
> Changes in v4:
> - Change the var name of regulator_bulk_data.
> - Adjust alignment.
> - Add a new line between two if blocks.
>
> drivers/iio/light/tsl2772.c | 87 +++++++++++++------------------------
> 1 file changed, 29 insertions(+), 58 deletions(-)
>
> diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c
> index 680afdb078d2..be37fcbd4654 100644
> --- a/drivers/iio/light/tsl2772.c
> +++ b/drivers/iio/light/tsl2772.c
> @@ -134,6 +134,12 @@ enum {
> TSL2772_CHIP_SUSPENDED = 2
> };
>
> +enum {
> + TSL2772_SUPPLY_VDD = 0,
> + TSL2772_SUPPLY_VDDIO = 1,
> + TSL2772_NUM_SUPPLIES = 2
> +};
> +
> /* Per-device data */
> struct tsl2772_als_info {
> u16 als_ch0;
> @@ -161,8 +167,7 @@ struct tsl2772_chip {
> struct mutex prox_mutex;
> struct mutex als_mutex;
> struct i2c_client *client;
> - struct regulator *vdd_supply;
> - struct regulator *vddio_supply;
> + struct regulator_bulk_data supplies[TSL2772_NUM_SUPPLIES];
> u16 prox_data;
> struct tsl2772_als_info als_cur_info;
> struct tsl2772_settings settings;
> @@ -697,46 +702,7 @@ static void tsl2772_disable_regulators_action(void *_data)
> {
> struct tsl2772_chip *chip = _data;
>
> - regulator_disable(chip->vdd_supply);
> - regulator_disable(chip->vddio_supply);
> -}
> -
> -static int tsl2772_enable_regulator(struct tsl2772_chip *chip,
> - struct regulator *regulator)
> -{
> - int ret;
> -
> - ret = regulator_enable(regulator);
> - if (ret < 0) {
> - dev_err(&chip->client->dev, "Failed to enable regulator: %d\n",
> - ret);
> - return ret;
> - }
> -
> - return 0;
> -}
> -
> -static struct regulator *tsl2772_get_regulator(struct tsl2772_chip *chip,
> - char *name)
> -{
> - struct regulator *regulator;
> - int ret;
> -
> - regulator = devm_regulator_get(&chip->client->dev, name);
> - if (IS_ERR(regulator)) {
> - if (PTR_ERR(regulator) != -EPROBE_DEFER)
> - dev_err(&chip->client->dev,
> - "Failed to get %s regulator %d\n",
> - name, (int)PTR_ERR(regulator));
> -
> - return regulator;
> - }
> -
> - ret = tsl2772_enable_regulator(chip, regulator);
> - if (ret < 0)
> - return ERR_PTR(ret);
> -
> - return regulator;
> + regulator_bulk_disable(ARRAY_SIZE(chip->supplies), chip->supplies);
> }
>
> static int tsl2772_chip_on(struct iio_dev *indio_dev)
> @@ -1804,14 +1770,26 @@ static int tsl2772_probe(struct i2c_client *clientp,
> chip->client = clientp;
> i2c_set_clientdata(clientp, indio_dev);
>
> - chip->vddio_supply = tsl2772_get_regulator(chip, "vddio");
> - if (IS_ERR(chip->vddio_supply))
> - return PTR_ERR(chip->vddio_supply);
> + chip->supplies[TSL2772_SUPPLY_VDD].supply = "vdd";
> + chip->supplies[TSL2772_SUPPLY_VDDIO].supply = "vddio";
>
> - chip->vdd_supply = tsl2772_get_regulator(chip, "vdd");
> - if (IS_ERR(chip->vdd_supply)) {
> - regulator_disable(chip->vddio_supply);
> - return PTR_ERR(chip->vdd_supply);
> + ret = devm_regulator_bulk_get(&clientp->dev,
> + ARRAY_SIZE(chip->supplies),
> + chip->supplies);
> + if (ret < 0) {
> + if (ret != -EPROBE_DEFER)
> + dev_err(&clientp->dev,
> + "Failed to get regulators: %d\n",
> + ret);
> +
> + return ret;
> + }
> +
> + ret = regulator_bulk_enable(ARRAY_SIZE(chip->supplies), chip->supplies);
> + if (ret < 0) {
> + dev_err(&clientp->dev, "Failed to enable regulators: %d\n",
> + ret);
> + return ret;
> }
>
> ret = devm_add_action_or_reset(&clientp->dev,
> @@ -1900,8 +1878,7 @@ static int tsl2772_suspend(struct device *dev)
> int ret;
>
> ret = tsl2772_chip_off(indio_dev);
> - regulator_disable(chip->vdd_supply);
> - regulator_disable(chip->vddio_supply);
> + regulator_bulk_disable(ARRAY_SIZE(chip->supplies), chip->supplies);
>
> return ret;
> }
> @@ -1912,16 +1889,10 @@ static int tsl2772_resume(struct device *dev)
> struct tsl2772_chip *chip = iio_priv(indio_dev);
> int ret;
>
> - ret = tsl2772_enable_regulator(chip, chip->vddio_supply);
> + ret = regulator_bulk_enable(ARRAY_SIZE(chip->supplies), chip->supplies);
> if (ret < 0)
> return ret;
>
> - ret = tsl2772_enable_regulator(chip, chip->vdd_supply);
> - if (ret < 0) {
> - regulator_disable(chip->vddio_supply);
> - return ret;
> - }
> -
> usleep_range(TSL2772_BOOT_MIN_SLEEP_TIME, TSL2772_BOOT_MAX_SLEEP_TIME);
>
> return tsl2772_chip_on(indio_dev);
