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From:   Benjamin Gaignard <benjamin.gaignard@collabora.com>
To:     ezequiel@vanguardiasur.com.ar, p.zabel@pengutronix.de,
        mchehab@kernel.org, gregkh@linuxfoundation.org,
        shawnguo@kernel.org, s.hauer@pengutronix.de, festevam@gmail.com,
        linux-imx@nxp.com, heiko@sntech.de, wens@csie.org,
        jernej.skrabec@gmail.com, samuel@sholland.org
Cc:     kernel@pengutronix.de, linux-media@vger.kernel.org,
        linux-rockchip@lists.infradead.org, linux-staging@lists.linux.dev,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-sunxi@lists.linux.dev, kernel@collabora.com,
        Benjamin Gaignard <benjamin.gaignard@collabora.com>,
        Nicolas Dufresne <nicolas.dufresne@collabora.com>
Subject: [PATCH v4] media: Add P010 video format
Date:   Wed, 18 May 2022 15:21:05 +0200
Message-Id: <20220518132105.629797-1-benjamin.gaignard@collabora.com>
MIME-Version: 1.0
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P010 is a YUV format with 16-bits per pixel with interleaved UV.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Acked-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
---
version 4:
- Fix 10-bits per components wording.

version 3:
- remove LE suffix
- rebased on media_tree_master branch

 .../media/v4l/pixfmt-yuv-planar.rst           | 54 +++++++++++++++++++
 drivers/media/v4l2-core/v4l2-common.c         |  1 +
 drivers/media/v4l2-core/v4l2-ioctl.c          |  1 +
 include/uapi/linux/videodev2.h                |  1 +
 4 files changed, 57 insertions(+)

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
index 8dff5906639b..a900ff66911a 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
@@ -109,6 +109,13 @@ All components are stored with the same number of bits per component.
       - Cb, Cr
       - No
       - 16x16 tiles
+    * - V4L2_PIX_FMT_P010
+      - 'P010'
+      - 10
+      - 4:2:0
+      - Cb, Cr
+      - Yes
+      - Linear
     * - V4L2_PIX_FMT_NV16
       - 'NV16'
       - 8
@@ -171,6 +178,7 @@ horizontally.
 .. _V4L2-PIX-FMT-NV21:
 .. _V4L2-PIX-FMT-NV12M:
 .. _V4L2-PIX-FMT-NV21M:
+.. _V4L2-PIX-FMT-P010:
 
 NV12, NV21, NV12M and NV21M
 ---------------------------
@@ -519,6 +527,52 @@ number of lines as the luma plane.
       - Cb\ :sub:`33`
       - Cr\ :sub:`33`
 
+.. _V4L2_PIX_FMT_P010:
+
+P010
+----
+
+Like NV12 with 10 bits per component, expanded to 16 bits.
+Data in the 10 high bits, zeros in the 6 low bits, arranged in little endian order.
+
+.. flat-table:: Sample 4x4 P010 Image
+    :header-rows:  0
+    :stub-columns: 0
+
+    * - start + 0:
+      - Y'\ :sub:`00`
+      - Y'\ :sub:`01`
+      - Y'\ :sub:`02`
+      - Y'\ :sub:`03`
+    * - start + 8:
+      - Y'\ :sub:`10`
+      - Y'\ :sub:`11`
+      - Y'\ :sub:`12`
+      - Y'\ :sub:`13`
+    * - start + 16:
+      - Y'\ :sub:`20`
+      - Y'\ :sub:`21`
+      - Y'\ :sub:`22`
+      - Y'\ :sub:`23`
+    * - start + 24:
+      - Y'\ :sub:`30`
+      - Y'\ :sub:`31`
+      - Y'\ :sub:`32`
+      - Y'\ :sub:`33`
+    * - start + 32:
+      - Cb\ :sub:`00`
+      - Cr\ :sub:`00`
+      - Cb\ :sub:`01`
+      - Cr\ :sub:`01`
+    * - start + 40:
+      - Cb\ :sub:`10`
+      - Cr\ :sub:`10`
+      - Cb\ :sub:`11`
+      - Cr\ :sub:`11`
+
+.. raw:: latex
+
+    \endgroup
 
 Fully Planar YUV Formats
 ========================
diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
index df34b2a283bc..1e38ad8906a2 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -266,6 +266,7 @@ const struct v4l2_format_info *v4l2_format_info(u32 format)
 		{ .format = V4L2_PIX_FMT_NV61,    .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 2, .vdiv = 1 },
 		{ .format = V4L2_PIX_FMT_NV24,    .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 1, .vdiv = 1 },
 		{ .format = V4L2_PIX_FMT_NV42,    .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 1, .vdiv = 1 },
+		{ .format = V4L2_PIX_FMT_P010,    .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 2, 2, 0, 0 }, .hdiv = 2, .vdiv = 1 },
 
 		{ .format = V4L2_PIX_FMT_YUV410,  .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 4, .vdiv = 4 },
 		{ .format = V4L2_PIX_FMT_YVU410,  .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 4, .vdiv = 4 },
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index e2636539c9db..536aaeb4df82 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1305,6 +1305,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
 	case V4L2_PIX_FMT_NV61:		descr = "Y/CrCb 4:2:2"; break;
 	case V4L2_PIX_FMT_NV24:		descr = "Y/CbCr 4:4:4"; break;
 	case V4L2_PIX_FMT_NV42:		descr = "Y/CrCb 4:4:4"; break;
+	case V4L2_PIX_FMT_P010:		descr = "10-bit Y/CrCb 4:2:0"; break;
 	case V4L2_PIX_FMT_NV12_4L4:	descr = "Y/CbCr 4:2:0 (4x4 Linear)"; break;
 	case V4L2_PIX_FMT_NV12_16L16:	descr = "Y/CbCr 4:2:0 (16x16 Linear)"; break;
 	case V4L2_PIX_FMT_NV12_32L32:   descr = "Y/CbCr 4:2:0 (32x32 Linear)"; break;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 6d465dc443b7..311f106bbdf5 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -601,6 +601,7 @@ struct v4l2_pix_format {
 #define V4L2_PIX_FMT_NV61    v4l2_fourcc('N', 'V', '6', '1') /* 16  Y/CrCb 4:2:2  */
 #define V4L2_PIX_FMT_NV24    v4l2_fourcc('N', 'V', '2', '4') /* 24  Y/CbCr 4:4:4  */
 #define V4L2_PIX_FMT_NV42    v4l2_fourcc('N', 'V', '4', '2') /* 24  Y/CrCb 4:4:4  */
+#define V4L2_PIX_FMT_P010    v4l2_fourcc('P', '0', '1', '0') /* 16  Y/CbCr 4:2:0 16-bit per pixel */
 
 /* two non contiguous planes - one Y, one Cr + Cb interleaved  */
 #define V4L2_PIX_FMT_NV12M   v4l2_fourcc('N', 'M', '1', '2') /* 12  Y/CbCr 4:2:0  */
-- 
2.32.0