[PATCH v7 14/28] media: mediatek: vcodec: add single allocation format

[Yunfei Dong]

Define one uncompressed capture format V4L2_PIX_FMT_MS21 in order to
support single allocation memory. The memory consists of two plans:
luma and chroma, luma is stored at the start and chrome is stored at
the end.

Signed-off-by: Yunfei Dong <yunfei.dong at mediatek.com>
---
 Documentation/userspace-api/media/v4l/pixfmt-reserved.rst | 7 +++++++
 drivers/media/v4l2-core/v4l2-common.c                     | 2 ++
 drivers/media/v4l2-core/v4l2-ioctl.c                      | 1 +
 include/uapi/linux/videodev2.h                            | 1 +
 4 files changed, 11 insertions(+)

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
index 886ba7b08d6b..eb19450bb238 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-reserved.rst
@@ -295,6 +295,13 @@ please make a proposal on the linux-media mailing list.
       - Compressed format used by Nuvoton NPCM video driver. This format is
         defined in Remote Framebuffer Protocol (RFC 6143, chapter 7.7.4 Hextile
         Encoding).
+    * .. _V4L2-PIX-FMT-MS21:
+
+      - ``V4L2_PIX_FMT_MS21``
+      - 'MS21'
+      - This format has single plane, luma and chroma are stored in a contiguous
+        memory. Luma pixels at the start, chroma pixel at the end. The image
+        height and width are aligned to 64.
 .. raw:: latex
 
     \normalsize
diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
index 0a2f4f0d0a07..7ce953f19023 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -273,6 +273,8 @@ const struct v4l2_format_info *v4l2_format_info(u32 format)
 		  .block_w = { 16, 8, 0, 0 }, .block_h = { 32, 16, 0, 0 }},
 		{ .format = V4L2_PIX_FMT_MT2110R, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 2, .comp_planes = 2, .bpp = { 5, 10, 0, 0 }, .bpp_div = { 4, 4, 1, 1 }, .hdiv = 2, .vdiv = 2,
 		  .block_w = { 16, 8, 0, 0 }, .block_h = { 32, 16, 0, 0 }},
+		{ .format = V4L2_PIX_FMT_MS21, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2,
+		  .block_w = { 16, 8, 0, 0 }, .block_h = { 32, 16, 0, 0 }},
 
 		/* YUV planar formats */
 		{ .format = V4L2_PIX_FMT_NV12,    .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 5eb4d797d259..8664e91a3d2e 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1531,6 +1531,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
 		case V4L2_PIX_FMT_AV1_FRAME:	descr = "AV1 Frame"; break;
 		case V4L2_PIX_FMT_MT2110T:	descr = "Mediatek 10bit Tile Mode"; break;
 		case V4L2_PIX_FMT_MT2110R:	descr = "Mediatek 10bit Raster Mode"; break;
+		case V4L2_PIX_FMT_MS21:		descr = "MediaTek One Plane Format"; break;
 		case V4L2_PIX_FMT_HEXTILE:	descr = "Hextile Compressed Format"; break;
 		case V4L2_PIX_FMT_PISP_COMP1_RGGB: descr = "PiSP 8b RGRG/GBGB mode1 compr"; break;
 		case V4L2_PIX_FMT_PISP_COMP1_GRBG: descr = "PiSP 8b GRGR/BGBG mode1 compr"; break;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index c4b1bc10af4c..8ece2cb8eb0b 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -802,6 +802,7 @@ struct v4l2_pix_format {
 #define V4L2_PIX_FMT_MM21     v4l2_fourcc('M', 'M', '2', '1') /* Mediatek 8-bit block mode, two non-contiguous planes */
 #define V4L2_PIX_FMT_MT2110T  v4l2_fourcc('M', 'T', '2', 'T') /* Mediatek 10-bit block tile mode */
 #define V4L2_PIX_FMT_MT2110R  v4l2_fourcc('M', 'T', '2', 'R') /* Mediatek 10-bit block raster mode */
+#define V4L2_PIX_FMT_MS21     v4l2_fourcc('M', 'S', '2', '1') /* MediaTek 8-bit block mode with one plane */
 #define V4L2_PIX_FMT_INZI     v4l2_fourcc('I', 'N', 'Z', 'I') /* Intel Planar Greyscale 10-bit and Depth 16-bit */
 #define V4L2_PIX_FMT_CNF4     v4l2_fourcc('C', 'N', 'F', '4') /* Intel 4-bit packed depth confidence information */
 #define V4L2_PIX_FMT_HI240    v4l2_fourcc('H', 'I', '2', '4') /* BTTV 8-bit dithered RGB */
-- 
2.18.0