Don't clear the backlight level when we're going into suspend or
blanking. Instead, just temporarily set the level to 0 so we retain
the value when we resume.
Reported-by: Benson Leung <bleung@xxxxxxxxxxxx>
Tested-by: Stephen Barber <smbarber@xxxxxxxxxxxx>
Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
---
drivers/video/backlight/lp855x_bl.c | 18 ++++++------------
1 file changed, 6 insertions(+), 12 deletions(-)
diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c
index 08ae72f..74daf7c 100644
--- a/drivers/video/backlight/lp855x_bl.c
+++ b/drivers/video/backlight/lp855x_bl.c
@@ -257,21 +257,15 @@ static void lp855x_pwm_ctrl(struct lp855x *lp, int br, int max_br)
static int lp855x_bl_update_status(struct backlight_device *bl)
{
struct lp855x *lp = bl_get_data(bl);
+ int brightness = bl->props.brightness;
if (bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
- bl->props.brightness = 0;
+ brightness = 0;
- if (lp->mode == PWM_BASED) {
- int br = bl->props.brightness;
- int max_br = bl->props.max_brightness;
-
- lp855x_pwm_ctrl(lp, br, max_br);
-
- } else if (lp->mode == REGISTER_BASED) {
- u8 val = bl->props.brightness;
-
- lp855x_write_byte(lp, lp->cfg->reg_brightness, val);
- }
+ if (lp->mode == PWM_BASED)
+ lp855x_pwm_ctrl(lp, brightness, bl->props.max_brightness);
+ else if (lp->mode == REGISTER_BASED)
+ lp855x_write_byte(lp, lp->cfg->reg_brightness, (u8)brightness);
return 0;
}
--
2.2.0.rc0.207.ga3a616c
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