linux-kernel - [PATCH v3 09/14] media: v4l: Add definition for Allwinner's MB32-tiled NV12 format

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Message-Id: <20180507124500.20434-10-paul.kocialkowski@bootlin.com>
Date:   Mon,  7 May 2018 14:44:55 +0200
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "David S . Miller" <davem@...emloft.net>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Arnd Bergmann <arnd@...db.de>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Ramesh Shanmugasundaram <ramesh.shanmugasundaram@...renesas.com>,
        Yannick Fertre <yannick.fertre@...com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Hugues Fruchet <hugues.fruchet@...com>,
        Alexandre Courbot <gnurou@...il.com>,
        Florent Revest <florent.revest@...e-electrons.com>,
        Tomasz Figa <tfiga@...omium.org>,
        Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>,
        Smitha T Murthy <smitha.t@...sung.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Randy Li <ayaka@...lik.info>
Subject: [PATCH v3 09/14] media: v4l: Add definition for Allwinner's MB32-tiled NV12 format

This introduces support for Allwinner's MB32-tiled NV12 format, where
each plane is divided into macroblocks of 32x32 pixels. Hence, the size
of each plane has to be aligned to 32 bytes. The pixels inside each
macroblock are coded as they would be if the macroblock was a single
plane, line after line.

The MB32-tiled NV12 format is used by the video engine on Allwinner
platforms: it is the default format for decoded frames (and the only one
available in the oldest supported platforms).

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
---
 include/uapi/linux/videodev2.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index d8f9b59d90d7..242a6bfa1440 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -670,6 +670,7 @@ struct v4l2_pix_format {
 #define V4L2_PIX_FMT_Z16      v4l2_fourcc('Z', '1', '6', ' ') /* Depth data 16-bit */
 #define V4L2_PIX_FMT_MT21C    v4l2_fourcc('M', 'T', '2', '1') /* Mediatek compressed block mode  */
 #define V4L2_PIX_FMT_INZI     v4l2_fourcc('I', 'N', 'Z', 'I') /* Intel Planar Greyscale 10-bit and Depth 16-bit */
+#define V4L2_PIX_FMT_MB32_NV12 v4l2_fourcc('M', 'N', '1', '2') /* Allwinner NV12 in 32x32 macroblocks */
 
 /* 10bit raw bayer packed, 32 bytes for every 25 pixels, last LSB 6 bits unused */
 #define V4L2_PIX_FMT_IPU3_SBGGR10	v4l2_fourcc('i', 'p', '3', 'b') /* IPU3 packed 10-bit BGGR bayer */
-- 
2.16.3