On 17/01/17 09:25, Brian Masney wrote:
> isl29028_chip_init_and_power_on() calls isl29028_set_als_scale() and
> this is not needed until the user actually needs to take a reading from
> the ALS/IR sensor. This patch moves the isl29028_set_als_scale() call
> from isl29028_chip_init_and_power_on() to isl29028_set_als_ir_mode().
> This sets the stage for faster resume times from runtime power
> management if the user is only querying the proximity sensor.
>
> Signed-off-by: Brian Masney <masneyb@xxxxxxxxxxxxx>
Makes sense.
> ---
> drivers/staging/iio/light/isl29028.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/iio/light/isl29028.c b/drivers/staging/iio/light/isl29028.c
> index fa58d08..598a5a5 100644
> --- a/drivers/staging/iio/light/isl29028.c
> +++ b/drivers/staging/iio/light/isl29028.c
> @@ -146,11 +146,15 @@ static int isl29028_set_als_scale(struct isl29028_chip *chip, int lux_scale)
> static int isl29028_set_als_ir_mode(struct isl29028_chip *chip,
> enum isl29028_als_ir_mode mode)
> {
> - int ret = 0;
> + int ret;
>
> if (chip->als_ir_mode == mode)
> return 0;
>
> + ret = isl29028_set_als_scale(chip, chip->lux_scale);
> + if (ret < 0)
> + return ret;
> +
> switch (mode) {
> case ISL29028_MODE_ALS:
> ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
> @@ -453,7 +457,7 @@ static int isl29028_chip_init_and_power_on(struct isl29028_chip *chip)
> return ret;
> }
>
> - return isl29028_set_als_scale(chip, chip->lux_scale);
> + return ret;
> }
>
> static bool isl29028_is_volatile_reg(struct device *dev, unsigned int reg)
>
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