Hi Chuhong,
On Wed, Jul 31, 2019 at 11:04:23AM +0800, Chuhong Yuan wrote:
> Use regulator_bulk_() APIs to shrink driver size.
>
> Signed-off-by: Chuhong Yuan <hsleste...@gmail.com>
Just a few minor nitpicks below. Overall, this is looking nice.
> ---
> Changes in v3:
> - Split v2 into two patches.
> - Add dev_err to log error messages.
> - Add a check for EPROBE_DEFER.
>
> drivers/iio/light/tsl2772.c | 82 +++++++++++--------------------------
> 1 file changed, 24 insertions(+), 58 deletions(-)
>
> diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c
> index f1134f183be7..fd6d44297dba 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 reg[TSL2772_NUM_SUPPLIES];
I prefer that this was named something other than 'reg'. Maybe
'supplies'? I know that there are a few other drivers in IIO that use
this name.
> 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->reg), chip->reg);
> }
>
> static int tsl2772_chip_on(struct iio_dev *indio_dev)
> @@ -1804,14 +1770,21 @@ 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->reg[TSL2772_SUPPLY_VDD].supply = "vdd";
> + chip->reg[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->reg),
> + chip->reg);
This needs to be aligned with devm_regulator_bulk_get, not ARRAY_SIZE.
> + if (ret < 0) {
> + if (ret != -EPROBE_DEFER)
> + dev_err(&clientp->dev, "Failed to get regulators:
> %d\n", ret);
Add newline.
Brian
