Date: Sat, 20 Dec 2014 15:52:54 +0000
From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Steve Longerbeam <slongerbeam@gmail.com>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
        linux-fbdev@vger.kernel.org, David Airlie <airlied@linux.ie>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
        Tomi Valkeinen <tomi.valkeinen@ti.com>,
        Fabio Estevam <fabio.estevam@freescale.com>,
        Shawn Guo <shawn.guo@linaro.org>, Denis Carikli <denis@eukrea.com>,
        Jiada Wang <jiada_wang@mentor.com>,
        Steve Longerbeam <steve_longerbeam@mentor.com>
Subject: Re: [PATCH v2 4/7] imx-drm: ipuv3-crtc: Implement mode_fixup
Message-ID: <20141220155254.GJ11285@n2100.arm.linux.org.uk>
References: <1418954426-21909-1-git-send-email-steve_longerbeam@mentor.com>
 <1418954426-21909-5-git-send-email-steve_longerbeam@mentor.com>
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On Thu, Dec 18, 2014 at 06:00:23PM -0800, Steve Longerbeam wrote:
> Ask the IPU display interface, via ipu_di_adjust_videomode(), to
> adjust a video mode to meet any DI restrictions. The function takes
> a subsystem independent videomode, so the drm_display_mode must be
> converted to videomode first, and then the adjusted mode converted
> back to a drm_display_mode.

What is the reason to use videomode (apart from it being subsystem
independent)?  Do we forsee implementation of other output subsystems
for the IPU?

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