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>
---
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)
--
2.9.3
_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
