From: Shingo Nakao <shingo.x.nakao@sonymobile.com>
Date: Tue, 2 Jul 2013 12:15:54 +0000 (+0200)
Subject: backlight: lp855x: set zero brightness at FBBLANK
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9f0a511f4a227c58c45b65c10fd2b85586360f67;p=linux-beck.git

backlight: lp855x: set zero brightness at FBBLANK

When backlight turns on early from display, a white line can be
seen on the screen. Therefore make sure backlight is off when we
are under an fb blank event.

Signed-off-by: Shingo Nakao <shingo.x.nakao@sonymobile.com>
Cc: Milo Kim <milo.kim@ti.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Oskar Andero <oskar.andero@sonymobile.com>
Acked-by: Milo Kim <milo.kim@ti.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
---

diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c
index a0e1e02bdc2e..c0b41f13bd4a 100644
--- a/drivers/video/backlight/lp855x_bl.c
+++ b/drivers/video/backlight/lp855x_bl.c
@@ -246,7 +246,7 @@ static int lp855x_bl_update_status(struct backlight_device *bl)
 {
 	struct lp855x *lp = bl_get_data(bl);
 
-	if (bl->props.state & BL_CORE_SUSPENDED)
+	if (bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
 		bl->props.brightness = 0;
 
 	if (lp->mode == PWM_BASED) {