[PATCH 1/4] drm: Add YUV422(P210, P212, P216) format definitions and fourcc

[swati2.sharma at intel.com]

From: Vidya Srinivas <vidya.srinivas at intel.com>

The following pixel formats are packed format that follows 4:2:2
chroma sampling. For memory represenation each component is
allocated 16 bits each. Thus each pixel occupies a DWORD.

P210: 	Valid data occupies MSB 10 bits.
	LSB 6 bits are filled with zeroes.
P212: 	Valid data occupies MSB 12 bits.
	LSB 4 bits are filled with zeroes.
P216: 	Valid data occupies 16 bits,
	doesn't require any padding bits.

First 16 bits stores the Y value and the next 16 bits stores one
of the chroma samples alternatively. The first luma sample will
be accompanied by first U sample and second luma sample is
accompanied by the first V sample.

Signed-off-by: Swati Sharma <swati2.sharma at intel.com>
Signed-off-by: Vidya Srinivas <vidya.srinivas at intel.com>
---
 drivers/gpu/drm/drm_fourcc.c  | 3 +++
 include/uapi/drm/drm_fourcc.h | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index 35c1e27..4bf04a5 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -173,6 +173,9 @@ const struct drm_format_info *__drm_format_info(u32 format)
 		{ .format = DRM_FORMAT_UYVY,		.depth = 0,  .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
 		{ .format = DRM_FORMAT_VYUY,		.depth = 0,  .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
 		{ .format = DRM_FORMAT_AYUV,		.depth = 0,  .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
+		{ .format = DRM_FORMAT_Y210,            .depth = 0,  .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 2, .vsub = 1 },
+		{ .format = DRM_FORMAT_Y212,            .depth = 0,  .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 2, .vsub = 1 },
+		{ .format = DRM_FORMAT_Y216,            .depth = 0,  .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 2, .vsub = 1 },
 	};
 
 	unsigned int i;
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 721ab7e..2ab53a0 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -113,6 +113,10 @@
 
 #define DRM_FORMAT_AYUV		fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 little endian */
 
+#define DRM_FORMAT_Y210         fourcc_code('Y', '2', '1', '0') /* [63:0] Y0:Cb0:Y1:Cr1 10:10:10:10 little endian */
+#define DRM_FORMAT_Y212         fourcc_code('Y', '2', '1', '2') /* [63:0] Y0:Cb0:Y1:Cr1 12:12:12:12 little endian */
+#define DRM_FORMAT_Y216         fourcc_code('Y', '2', '1', '6') /* [63:0] Y0:Cb0:Y1:Cr1 16:16:16:16 little endian */
+
 /*
  * 2 plane RGB + A
  * index 0 = RGB plane, same format as the corresponding non _A8 format has
-- 
1.9.1