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staging: iio: isl29028: only set ALS scale when ALS/IR sensing is enabled

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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@onstation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Brian Masney 2017-01-17 04:25:01 -05:00 committed by Jonathan Cameron
parent 84a76694bc
commit 0fac96ed50
1 changed files with 6 additions and 2 deletions
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8
drivers/staging/iio/light/isl29028.c
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@ -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)