linux-kernel - [PATCH v5 02/14] media:Add nt8 and nt10 video format.

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Date:   Tue, 27 Jul 2021 11:20:45 +0800
From:   Ming Qian <ming.qian@....com>
To:     mchehab@...nel.org, shawnguo@...nel.org, robh+dt@...nel.org,
        s.hauer@...gutronix.de
Cc:     hverkuil-cisco@...all.nl, kernel@...gutronix.de,
        festevam@...il.com, linux-imx@....com, aisheng.dong@....com,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v5 02/14] media:Add nt8 and nt10 video format.

NT8 is 8-bit tiled nv12 format used by amphion decoder.
NT10 is 10-bit tiled format used by amphion decoder.
The tile size is 8x128

Signed-off-by: Ming Qian <ming.qian@....com>
Signed-off-by: Shijie Qin <shijie.qin@....com>
Signed-off-by: Zhou Peng <eagle.zhou@....com>
---
 .../userspace-api/media/v4l/pixfmt-reserved.rst   | 15 +++++++++++++++
 drivers/media/v4l2-core/v4l2-ioctl.c              |  2 ++
 include/uapi/linux/videodev2.h                    |  2 ++
 3 files changed, 19 insertions(+)

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
index c9231e18859b..2deae49210a7 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
@@ -256,3 +256,18 @@ please make a proposal on the linux-media mailing list.
 	of tiles, resulting in 32-aligned resolutions for the luminance plane
 	and 16-aligned resolutions for the chrominance plane (with 2x2
 	subsampling).
+    * .. _V4L2-PIX-FMT-NT8:
+
+      - ``V4L2_PIX_FMT_NT8``
+      - 'NA12'
+      - Two-planar NV12-based format used by the video engine found on Amphion decoder,
+    with 8x128 tiles for the luminance plane and chrominance plane.
+    The number of bytes in one luminance or chrominance row must be divisible by 256.
+    * .. _V4L2-PIX-FMT-NT10:
+
+      - ``V4L2_PIX_FMT_NT10``
+      - 'NT12'
+      - NT10 is a tiled YUV format with 10-bits per pixel with interleaved UV.
+    It's used by the video engine found on Amphion decoder,
+    with 8x128 tiles for the luminance plane and chrominance plane.
+    The number of bytes in one luminance or chrominance row must be divisible by 256.
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index eeff398fbdcc..34e6415e5722 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1402,6 +1402,8 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
 	case V4L2_META_FMT_UVC:		descr = "UVC Payload Header Metadata"; break;
 	case V4L2_META_FMT_D4XX:	descr = "Intel D4xx UVC Metadata"; break;
 	case V4L2_META_FMT_VIVID:       descr = "Vivid Metadata"; break;
+	case V4L2_PIX_FMT_NT8:		descr = "Amphion Tiled 8x128 NV12"; break;
+	case V4L2_PIX_FMT_NT10:		descr = "Amphion Tiled 8x128 10-bit"; break;
 
 	default:
 		/* Compressed formats */
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 534eaa4d39bc..4836590a690c 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -740,6 +740,8 @@ struct v4l2_pix_format {
 #define V4L2_PIX_FMT_INZI     v4l2_fourcc('I', 'N', 'Z', 'I') /* Intel Planar Greyscale 10-bit and Depth 16-bit */
 #define V4L2_PIX_FMT_SUNXI_TILED_NV12 v4l2_fourcc('S', 'T', '1', '2') /* Sunxi Tiled NV12 Format */
 #define V4L2_PIX_FMT_CNF4     v4l2_fourcc('C', 'N', 'F', '4') /* Intel 4-bit packed depth confidence information */
+#define V4L2_PIX_FMT_NT8      v4l2_fourcc('N', 'A', '1', '2') /* Amphion Tiled 8x128 NV12 Format */
+#define V4L2_PIX_FMT_NT10     v4l2_fourcc('N', 'T', '1', '2') /* Amphion Tiled 8x128 10 bit Format */
 
 /* 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 */
-- 
2.32.0