From: yzq <yzq@rock-chips.com>
Date: Thu, 17 Jan 2013 10:06:03 +0000 (+0800)
Subject: backlight:fix resume backlight flash
X-Git-Tag: firefly_0821_release~7899
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ab20ea947e9477d12f5ef81400a0a7673d2357b4;p=firefly-linux-kernel-4.4.55.git

backlight:fix resume backlight flash
---

diff --git a/drivers/video/backlight/rk29_backlight.c b/drivers/video/backlight/rk29_backlight.c
index 7f2fa1640cb3..5b4f473b626a 100755
--- a/drivers/video/backlight/rk29_backlight.c
+++ b/drivers/video/backlight/rk29_backlight.c
@@ -122,6 +122,13 @@ static int rk29_bl_update_status(struct backlight_device *bl)
 	}else if(!(bl->props.state & BL_CORE_DRIVER2) && suspend_flag ){
 		suspend_flag = 0;
 	}
+	div_total = read_pwm_reg(PWM_REG_LRC);
+	if (ref) {
+		divh = div_total*brightness/BL_STEP;
+	} else {
+		divh = div_total*(BL_STEP-brightness)/BL_STEP;
+	}
+	rk_pwm_setup(id, PWM_DIV, divh, div_total);
 
 //BL_CORE_DRIVER1 is the flag if backlight pwm is closed.
 	if ((bl->props.state & BL_CORE_DRIVER1) && brightness ==0 ){  
@@ -137,13 +144,6 @@ static int rk29_bl_update_status(struct backlight_device *bl)
 		msleep(1);
 	}
 
-	div_total = read_pwm_reg(PWM_REG_LRC);
-	if (ref) {
-		divh = div_total*brightness/BL_STEP;
-	} else {
-		divh = div_total*(BL_STEP-brightness)/BL_STEP;
-	}
-	rk_pwm_setup(id, PWM_DIV, divh, div_total);
 
 	DBG("%s:line=%d,brightness = %d, div_total = %d, divh = %d state=%x \n",__FUNCTION__,__LINE__,brightness, div_total, divh,bl->props.state);
 out: