linux-kernel - Re: [PATCH] drm: rockchip: Turn off VT switching on suspend

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Message-ID: <55338CA7.3090404@rock-chips.com>
Date:	Sun, 19 Apr 2015 19:08:23 +0800
From:	Caesar Wang <wxt@...k-chips.com>
To:	David Airlie <airlied@...ux.ie>, Heiko Stuebner <heiko@...ech.de>,
	Daniel Kurtz <djkurtz@...omium.org>,
	Mark Yao <mark.yao@...k-chips.com>
CC:	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	Rob Clark <robdclark@...il.com>,
	Daniel Vetter <daniel@...ll.ch>
Subject: Re: [PATCH] drm: rockchip: Turn off VT switching on suspend

Hi Mark,

Can you apply it into your drm branch if it's indeed uesful for u?

在 2015年03月31日 18:22, Caesar Wang 写道:
> drm/rockchip already has support for disabling all displays on suspend
> and enabling them on resume.
>
> Disable automatic VT switching on suspend by the pm console tracking
> layer.
>
> Tested on veyron, used `echo mem > sys/power/state`
>    => verified no VT switch
>
> Reviewed-by: Daniel Kurtz <djkurtz@...omium.org>
> Signed-off-by: Caesar Wang <wxt@...k-chips.com>
> ---
>
>   drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c
> index a5d889a..eb4e0db 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c
> @@ -119,6 +119,9 @@ static int rockchip_drm_fbdev_create(struct drm_fb_helper *helper,
>   	DRM_DEBUG_KMS("FB [%dx%d]-%d kvaddr=%p offset=%ld size=%d\n",
>   		      fb->width, fb->height, fb->depth, rk_obj->kvaddr,
>   		      offset, size);
> +
> +	fbi->skip_vt_switch = true;
> +
>   	return 0;
>   
>   err_drm_framebuffer_unref:

-- 
**************************************************************************************
王晓腾    Caesar Wang
Product R&D Dept.III
Fuzhou Rockchip Electronics Co.Ltd
Addr：  NO.18 Building, A District, Fuzhou Software Park,Gulou District,Fuzhou, Fujian,China(Fuzhou Headquarters)
               21F,Malata Building,Kejizhongyi Avenue,Nanshan District,Shenzhen  (Shenzhen Office)
Tel：+86-591-83991906/07 - 8221
Mobile:+86 15059456742
E-mail : wxt@...k-chips.com
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