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backlight: pwm_bl: Handle gpio that can sleep 

Some backlight GPIOs might be connected to some i2c based expanders whose
access might sleep.

Since it's not in any critical path, use the cansleep variant of the GPIO
API.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Maxime Ripard 2016-08-31 10:18:12 +02:00 committed by Lee Jones
parent 358791033f
commit 0c9501f823
1 changed files with 2 additions and 2 deletions
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4
drivers/video/backlight/pwm_bl.c
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@ -55,7 +55,7 @@ static void pwm_backlight_power_on(struct pwm_bl_data *pb, int brightness)
dev_err(pb->dev, "failed to enable power supply\n");
if (pb->enable_gpio)
gpiod_set_value(pb->enable_gpio, 1);
gpiod_set_value_cansleep(pb->enable_gpio, 1);
pwm_enable(pb->pwm);
pb->enabled = true;
@ -70,7 +70,7 @@ static void pwm_backlight_power_off(struct pwm_bl_data *pb)
pwm_disable(pb->pwm);
if (pb->enable_gpio)
gpiod_set_value(pb->enable_gpio, 0);
gpiod_set_value_cansleep(pb->enable_gpio, 0);
regulator_disable(pb->power_supply);
pb->enabled = false;