[PATCH v2 06/10] media: Add ABGR32_12 video format

[Ming Qian]

ABGR32_12 is a reversed RGB format with alpha channel last,
12 bits per component like ABGR32,
expanded to 16bits.
Data in the 12 high bits, zeros in the 4 low bits,
arranged in little endian order.

Signed-off-by: Ming Qian <ming.qian@xxxxxxx>
---
 Documentation/userspace-api/media/v4l/pixfmt-rgb.rst | 9 +++++++++
 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, 12 insertions(+)

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst b/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst
index da29ba69c2d9..cb60ffe8f860 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst
@@ -793,6 +793,15 @@ arranged in little endian order.
       - G\ :sub:`15-4`
       - R\ :sub:`15-4`
       -
+    * .. _V4L2-PIX-FMT-ABGR32-12:
+
+      - ``V4L2_PIX_FMT_ABGR32_12``
+      - 'B412'
+
+      - B\ :sub:`15-4`
+      - G\ :sub:`15-4`
+      - R\ :sub:`15-4`
+      - A\ :sub:`15-4`
 
 .. raw:: latex
 
diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
index 024190f82cf1..4b3302a07f83 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -253,6 +253,7 @@ const struct v4l2_format_info *v4l2_format_info(u32 format)
 		{ .format = V4L2_PIX_FMT_RGB555,  .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .hdiv = 1, .vdiv = 1 },
 		{ .format = V4L2_PIX_FMT_BGR666,  .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .hdiv = 1, .vdiv = 1 },
 		{ .format = V4L2_PIX_FMT_BGR24_12, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 6, 0, 0, 0 }, .hdiv = 1, .vdiv = 1 },
+		{ .format = V4L2_PIX_FMT_ABGR32_12, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 8, 0, 0, 0 }, .hdiv = 1, .vdiv = 1 },
 
 		/* YUV packed formats */
 		{ .format = V4L2_PIX_FMT_YUYV,    .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .hdiv = 2, .vdiv = 1 },
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 329515786abb..0f772e19890b 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1299,6 +1299,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
 	case V4L2_PIX_FMT_RGBA32:	descr = "32-bit RGBA 8-8-8-8"; break;
 	case V4L2_PIX_FMT_RGBX32:	descr = "32-bit RGBX 8-8-8-8"; break;
 	case V4L2_PIX_FMT_BGR24_12:	descr = "12-bit Depth BGR"; break;
+	case V4L2_PIX_FMT_ABGR32_12:	descr = "12-bit Depth BGRA"; break;
 	case V4L2_PIX_FMT_GREY:		descr = "8-bit Greyscale"; break;
 	case V4L2_PIX_FMT_Y4:		descr = "4-bit Greyscale"; break;
 	case V4L2_PIX_FMT_Y6:		descr = "6-bit Greyscale"; break;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index ab52a605e6c0..757ab14e7a6e 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -579,6 +579,7 @@ struct v4l2_pix_format {
 
 /* RGB formats (6 or 8 bytes per pixel) */
 #define V4L2_PIX_FMT_BGR24_12    v4l2_fourcc('B', '3', '1', '2') /* 48  BGR 12-bit per component */
+#define V4L2_PIX_FMT_ABGR32_12   v4l2_fourcc('B', '4', '1', '2') /* 64  BGRA 12-bit per component */
 
 /* Grey formats */
 #define V4L2_PIX_FMT_GREY    v4l2_fourcc('G', 'R', 'E', 'Y') /*  8  Greyscale     */
-- 
2.38.1