linux-kernel - Re: [RFC PATCH v1 0/4] Add Rockchip RGA support

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Date:	Tue, 22 Mar 2016 01:42:50 +0100
From:	Heiko Stuebner <heiko@...ech.de>
To:	Yakir Yang <ykk@...k-chips.com>
Cc:	David Airlie <airlied@...ux.ie>,
	Mark Yao <mark.yao@...k-chips.com>,
	Joonyoung Shim <jy0922.shim@...sung.com>,
	Kumar Gala <galak@...eaurora.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Russell King <linux@....linux.org.uk>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	Emil Velikov <emil.l.velikov@...il.com>
Subject: Re: [RFC PATCH v1 0/4] Add Rockchip RGA support

Hi Yakir,

Am Montag, 21. März 2016, 20:17:46 schrieb Yakir Yang:
> On 03/21/2016 07:29 PM, Heiko Stübner wrote:
> > Am Montag, 21. März 2016, 17:28:38 schrieb Yakir Yang:
> >> This patch set would add the RGA direct rendering based 2d graphics
> >> acceleration module.
> > 
> > very cool to see that.
> 
> ;)
> 
> >> This patch set is based on git repository below:
> >> git://people.freedesktop.org/~airlied/linux drm-next
> >> commit id: 568d7c764ae01f3706085ac8f0d8a8ac7e826bd7
> >> 
> >> And the RGA driver is based on Exynos G2D driver, it only manages the
> >> command lists received from user, so user should make the command list
> >> to data and registers needed by operation to use.
> >> 
> >> I have prepared an userspace demo application for testing:
> >> 	https://github.com/yakir-Yang/libdrm-rockchip
> >> 
> >> That is a rockchip libdrm library, and I have write a simple test case
> >> "rockchip_rga_test" that would test the below RGA features:
> >> - solid
> >> - copy
> >> - rotation
> >> - flip
> >> - window clip
> >> - dithering
> > 
> > Did you submit your libdrm changes as well?
> > 
> > Userspace-interfaces need to be stable so the other side must also get
> > accepted - even before the kernel change if I remember correctly.
> 
> Got it, and I just saw exynos_fimg2d already landed at mainline libdrm.
> But I don't find the way to submit patches to libdrm, would you like
> share some helps here ;)

Looking at the libdrm sources on cgit.freedesktop.org, I did not find any 
specific manual on submitting patches.

But looking at the dri-list archive, dri-devel@...ts.freedesktop.org is the 
right list and looking at the libdrm history it looks like Emil Velikov 
<emil.l.velikov@...il.com> seems to be doing maintenance-stuff in libdrm.
And as a 3rd recipient, please also include the linux-rockchip list.

@Emil, please shout if I read that wrong :-)


Hope that helps
Heiko