linux-kernel - Re: [PATCH] drm/rockchip: vop: support afbc format for rk3399 vop

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Message-ID: <57D37A1A.6050500@rock-chips.com>
Date:   Sat, 10 Sep 2016 11:12:26 +0800
From:   Mark yao <mark.yao@...k-chips.com>
To:     David Airlie <airlied@...ux.ie>, Heiko Stuebner <heiko@...ech.de>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/rockchip: vop: support afbc format for rk3399 vop

Sorry, wrong title on this mail, ignore this mail. I had resent it.
On 2016年09月10日 11:07, Mark Yao wrote:
> Rk3399 vop big can support one afbc decoder, the afbc decoder
> can select which overlay window use it.
>
> on vop hardware, we call afbc decoder as afbdc.
>
> afbdc window has some limit:
>    1, not support offset on source buffer.
>    2, if feed non-afbc buffer to afbc decoder, afbc decoder hardware
>       would die, we need take care of using it.
>
> AFBC is a compressed format, means lower bandwidth consume,
> it's useful to improve performance.
>
> Signed-off-by: Mark Yao<mark.yao@...k-chips.com>
> ---


-- 
Ｍark Yao