linux-kernel - Re: [PATCH v2 0/7] imx-drm: ipuv3-crtc: Implement mode

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Date:	Fri, 23 Jan 2015 10:56:45 +0800
From:	Liu Ying <Ying.Liu@...escale.com>
To:	Philipp Zabel <p.zabel@...gutronix.de>
CC:	Steve Longerbeam <slongerbeam@...il.com>,
	<dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
	<linux-fbdev@...r.kernel.org>, David Airlie <airlied@...ux.ie>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	"Fabio Estevam" <fabio.estevam@...escale.com>,
	Shawn Guo <shawn.guo@...aro.org>,
	Denis Carikli <denis@...rea.com>,
	Jiada Wang <jiada_wang@...tor.com>,
	"Steve Longerbeam" <steve_longerbeam@...tor.com>
Subject: Re: [PATCH v2 0/7] imx-drm: ipuv3-crtc: Implement mode_fixup

Hi,

It looks that the below commit makes my Hannstar XGA LVDS panel stop working
on the i.MX6DL SabreSD board.  Any idea?

commit eb10d6355532def3a74aaabd115e2373cca70b9d
Author: Steve Longerbeam <slongerbeam@...il.com>
Date:   Thu Dec 18 18:00:24 2014 -0800

imx-drm: encoder prepare/mode_set must use adjusted mode

The encoder ->prepare() and ->mode_set() methods need to use the
hw adjusted mode, not the original mode.

Signed-off-by: Steve Longerbeam <steve_longerbeam@...tor.com>
Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>

Regards,
Liu Ying

On Wed, Jan 07, 2015 at 07:27:28PM +0100, Philipp Zabel wrote:
> Am Donnerstag, den 18.12.2014, 18:00 -0800 schrieb Steve Longerbeam:
> > This patchset implements ->mode_fixup() in the imx ipuv3-crtc driver,
> > using a new support function ipu_di_adjust_videomode(). This new
> > function needs to be subsystem independent, so it accepts a video
> > mode as a 'struct videomode'. Hence ipu-crtc ->mode_fixup() needs
> > another support function to convert a drm_display_mode to a videomode
> > before passing the mode to ipu_di_adjust_videomode() for fixup.
> > 
> > Also some related code cleanup: 'struct ipu_di_signal_cfg' should
> > use 'struct videomode' for mode timings.
> 
> Alright, I have applied the series with
> s/videomode_from_drm_display_mode/drm_display_mode_to_videomode/
> 
> thanks
> Philipp
> 
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