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backlight:fix resume backlight flash

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This commit is contained in:
yzq
2013-01-17 18:06:03 +08:00
parent b4cf90e1fb
commit ab20ea947e
1 changed files with 7 additions and 7 deletions
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14
drivers/video/backlight/rk29_backlight.c
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@@ -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: