linux-kernel - Re: [PATCH] backlight: lp855x: set zero brightness at FBBLANK

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Message-id: <001e01ce778f$f2033c10$d609b430$@samsung.com>
Date:	Wed, 03 Jul 2013 10:52:16 +0900
From:	Jingoo Han <jg1.han@...sung.com>
To:	'Oskar Andero' <oskar.andero@...ymobile.com>,
	linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org
Cc:	'Jean-Christophe Plagniol-Villard' <plagnioj@...osoft.com>,
	'Tomi Valkeinen' <tomi.valkeinen@...com>,
	'Radovan Lekanovic' <Radovan.Lekanovic@...ymobile.com>,
	'Shingo Nakao' <shingo.x.nakao@...ymobile.com>,
	'Milo Kim' <milo.kim@...com>,
	'Richard Purdie' <rpurdie@...ys.net>,
	Jingoo Han <jg1.han@...sung.com>
Subject: Re: [PATCH] backlight: lp855x: set zero brightness at FBBLANK

On Tuesday, July 02, 2013 9:16 PM, Oskar Andero wrote:
> 
> From: Shingo Nakao <shingo.x.nakao@...ymobile.com>
> 
> 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@...ymobile.com>
> Cc: Milo Kim <milo.kim@...com>
> Cc: Richard Purdie <rpurdie@...ys.net>
> Signed-off-by: Oskar Andero <oskar.andero@...ymobile.com>

Acked-by: Jingoo Han <jg1.han@...sung.com>

Best regards,
Jingoo Han

> ---
>  drivers/video/backlight/lp855x_bl.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c
> index a0e1e02..c0b41f1 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) {
> --
> 1.8.1.5
> 


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