linux-kernel - [PATCH v5 01/10] media: v4l: Add packed YUV444 24bpp pixel format

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Message-Id: <20201112030557.8540-2-mirela.rabulea@oss.nxp.com>
Date:   Thu, 12 Nov 2020 05:05:48 +0200
From:   "Mirela Rabulea (OSS)" <mirela.rabulea@....nxp.com>
To:     mchehab@...nel.org, hverkuil-cisco@...all.nl, shawnguo@...nel.org,
        robh+dt@...nel.org, p.zabel@...gutronix.de
Cc:     paul.kocialkowski@...tlin.com, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-imx@....com,
        s.hauer@...gutronix.de, aisheng.dong@....com,
        daniel.baluta@....com, robert.chiras@....com,
        laurentiu.palcu@....com, mark.rutland@....com,
        devicetree@...r.kernel.org, ezequiel@...labora.com,
        laurent.pinchart+renesas@...asonboard.com,
        niklas.soderlund+renesas@...natech.se,
        dafna.hirschfeld@...labora.com,
        Mirela Rabulea <mirela.rabulea@....com>
Subject: [PATCH v5 01/10] media: v4l: Add packed YUV444 24bpp pixel format

From: Mirela Rabulea <mirela.rabulea@....com>

The added format is V4L2_PIX_FMT_YUV24, this is a packed
YUV 4:4:4 format, with 8 bits for each component, 24 bits
per sample.

This format is used by the i.MX 8QuadMax and i.MX 8DualXPlus/8QuadXPlus
JPEG encoder/decoder.

Signed-off-by: Mirela Rabulea <mirela.rabulea@....com>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
---
Changes in v5:
Added <Reviewed-by>

 .../media/v4l/pixfmt-packed-yuv.rst           | 37 ++++++++++++++++++-
 drivers/media/v4l2-core/v4l2-ioctl.c          |  1 +
 include/uapi/linux/videodev2.h                |  1 +
 3 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst b/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst
index 84262208dd1c..7b340bf5695d 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst
@@ -10,7 +10,8 @@ Description
 ===========
 
 Similar to the packed RGB formats these formats store the Y, Cb and Cr
-component of each pixel in one 16 or 32 bit word.
+component of each pixel next to each other in memory. They occupy 16, 24 or 32
+bits per pixel.
 
 
 .. raw:: latex
@@ -150,6 +151,40 @@ component of each pixel in one 16 or 32 bit word.
 
       -  :cspan:`15`
 
+    * .. _V4L2-PIX-FMT-YUV24:
+
+      - ``V4L2_PIX_FMT_YUV24``
+      - 'YUV3'
+
+      - Y'\ :sub:`7`
+      - Y'\ :sub:`6`
+      - Y'\ :sub:`5`
+      - Y'\ :sub:`4`
+      - Y'\ :sub:`3`
+      - Y'\ :sub:`2`
+      - Y'\ :sub:`1`
+      - Y'\ :sub:`0`
+
+      - Cb\ :sub:`7`
+      - Cb\ :sub:`6`
+      - Cb\ :sub:`5`
+      - Cb\ :sub:`4`
+      - Cb\ :sub:`3`
+      - Cb\ :sub:`2`
+      - Cb\ :sub:`1`
+      - Cb\ :sub:`0`
+
+      - Cr\ :sub:`7`
+      - Cr\ :sub:`6`
+      - Cr\ :sub:`5`
+      - Cr\ :sub:`4`
+      - Cr\ :sub:`3`
+      - Cr\ :sub:`2`
+      - Cr\ :sub:`1`
+      - Cr\ :sub:`0`
+
+      -  :cspan:`7`
+
     * .. _V4L2-PIX-FMT-YUV32:
 
       - ``V4L2_PIX_FMT_YUV32``
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index f0f6906a879d..366b76690432 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1304,6 +1304,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
 	case V4L2_PIX_FMT_YUV444:	descr = "16-bit A/XYUV 4-4-4-4"; break;
 	case V4L2_PIX_FMT_YUV555:	descr = "16-bit A/XYUV 1-5-5-5"; break;
 	case V4L2_PIX_FMT_YUV565:	descr = "16-bit YUV 5-6-5"; break;
+	case V4L2_PIX_FMT_YUV24:	descr = "24-bit YUV 4:4:4 8-8-8"; break;
 	case V4L2_PIX_FMT_YUV32:	descr = "32-bit A/XYUV 8-8-8-8"; break;
 	case V4L2_PIX_FMT_AYUV32:	descr = "32-bit AYUV 8-8-8-8"; break;
 	case V4L2_PIX_FMT_XYUV32:	descr = "32-bit XYUV 8-8-8-8"; break;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 927075fa9099..9973b5f76c76 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -590,6 +590,7 @@ struct v4l2_pix_format {
 #define V4L2_PIX_FMT_YUV444  v4l2_fourcc('Y', '4', '4', '4') /* 16  xxxxyyyy uuuuvvvv */
 #define V4L2_PIX_FMT_YUV555  v4l2_fourcc('Y', 'U', 'V', 'O') /* 16  YUV-5-5-5     */
 #define V4L2_PIX_FMT_YUV565  v4l2_fourcc('Y', 'U', 'V', 'P') /* 16  YUV-5-6-5     */
+#define V4L2_PIX_FMT_YUV24   v4l2_fourcc('Y', 'U', 'V', '3') /* 24  YUV-8-8-8     */
 #define V4L2_PIX_FMT_YUV32   v4l2_fourcc('Y', 'U', 'V', '4') /* 32  YUV-8-8-8-8   */
 #define V4L2_PIX_FMT_AYUV32  v4l2_fourcc('A', 'Y', 'U', 'V') /* 32  AYUV-8-8-8-8  */
 #define V4L2_PIX_FMT_XYUV32  v4l2_fourcc('X', 'Y', 'U', 'V') /* 32  XYUV-8-8-8-8  */
-- 
2.17.1