Message-ID: <564ADED1.7090208@rock-chips.com>
Date: Tue, 17 Nov 2015 16:01:21 +0800
From: Mark yao <mark.yao@rock-chips.com>
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To: David Airlie <airlied@linux.ie>, Heiko Stuebner <heiko@sntech.de>,
        Russell King <linux@arm.linux.org.uk>, dri-devel@lists.freedesktop.org,
        linux-arm-kernel@lists.infradead.org,
        linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [RESEND PATCH] drm/rockchip: import dma_buf to gem
References: <1447146717-11423-1-git-send-email-mark.yao@rock-chips.com> <20151116162547.GE16848@phenom.ffwll.local>
In-Reply-To: <20151116162547.GE16848@phenom.ffwll.local>
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On 2015年11月17日 00:25, Daniel Vetter wrote:
> On Tue, Nov 10, 2015 at 05:11:57PM +0800, Mark Yao wrote:
>> >We want to display a buffer allocated by other driver, need import
>> >the buffer to gem.
> Does this work with some open-source driver/userspace or is this for the
> proprietary stack only? A bit a grey area I guess, but if it's only for
> the proprietary stack I think it shouldn't land in upstream - making sure
> it works with open-source (e.g. Xorg prime) first would be good.
> -Daniel
>
Hi Daniel
     It works on open-source with following stack:
         ion -> dma_fd  -> prime fd to handle -> drm -> vop

     ion is the android ION memory allocator, its driver at 
upstream-kernel/drivers/staging/android/ion.

     We have some application use ion on android, and want to port to 
Xorg side.

Thanks

-- 
Ｍark Yao


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