linux-kernel - Re: [PATCH] drm/rockchip: vop: fix window origin calculation

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Message-ID: <1671071.tld3k90Oeo@phil>
Date:	Tue, 10 Nov 2015 12:42:21 +0100
From:	Heiko Stuebner <heiko@...ech.de>
To:	Mark Yao <mark.yao@...k-chips.com>
Cc:	David Airlie <airlied@...ux.ie>,
	Russell King <linux@....linux.org.uk>,
	dri-devel@...ts.freedesktop.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Dominik Behr <dbehr@...omium.org>
Subject: Re: [PATCH] drm/rockchip: vop: fix window origin calculation

Am Dienstag, 10. November 2015, 17:59:10 schrieb Mark Yao:
> From: Dominik Behr <dbehr@...omium.org>
> 
> VOP_WINx_DSP_ST does not require subtracting 1 from the values written to
> it. It actually causes the screen to be shifted by one pixel.
> 
> Signed-off-by: Mark Yao <mark.yao@...k-chips.com>

funny I never noticed that shift, but now that you mention it, I see it too
on my Chromebook and the patch fixes this. I've also looked up the
matching data in the TRM, so

Reviewed-by: Heiko Stuebner <heiko@...ech.de>
Tested-by: Heiko Stuebner <heiko@...ech.de>


Heiko
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