linux-kernel - Re: [PATCH v3 09/21] drm/sun4i: frontend: Add support for planar YUV input formats

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Message-ID: <20181204153054.sdckfazc2cfu6tmo@flea>
Date:   Tue, 4 Dec 2018 16:30:54 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Cc:     dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        David Airlie <airlied@...ux.ie>, Chen-Yu Tsai <wens@...e.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Sean Paul <sean@...rly.run>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        linux-sunxi@...glegroups.com, Daniel Vetter <daniel@...ll.ch>
Subject: Re: [PATCH v3 09/21] drm/sun4i: frontend: Add support for planar YUV
 input formats

On Tue, Dec 04, 2018 at 03:22:06PM +0100, Paul Kocialkowski wrote:
> Planar YUV formats come with 3 distinct planes, which requires
> configuring the frontend line stride and address registers for the
> third plane.
> 
> Our hardware only supports the YUV planes order and in order to support
> formats with a YVU plane order, a helper is introduced to indicate
> whether to invert the address of the two chroma planes.
> 
> Missing definitions for YUV411 and YUV444 input format configuration are
> also introduced as support is added for these formats. For the input
> sequence part, no configuration is required for planar YUV formats so
> zero is returned in that case.
> 
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>

Acked-by: Maxime Ripard <maxime.ripard@...tlin.com>

Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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