[PATCH RFC v3 4/6] drm: drm_fourcc: Add new formats for Xilinx IPs

[Hyun Kwon]

This patch adds new formats needed by Xilinx IP. Pixels are not
byte-aligned in these formats, and the drm_format_info for these
formats has macro-pixel information.

Signed-off-by: Jeffrey Mouroux <jmouroux at xilinx.com>
Signed-off-by: Hyun Kwon <hyun.kwon at xilinx.com>
---
v3
- Update entries for changes
- Squash fourcc patch into this
v2
- Add detailed descriptions
- Remove formats with no user
---
---
 drivers/gpu/drm/drm_fourcc.c  | 2 ++
 include/uapi/drm/drm_fourcc.h | 8 ++++++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index ed95de2..36bff7a 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -168,6 +168,8 @@ const struct drm_format_info *__drm_format_info(u32 format)
 		{ .format = DRM_FORMAT_NV61,		.depth = 0,  .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1 },
 		{ .format = DRM_FORMAT_NV24,		.depth = 0,  .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1 },
 		{ .format = DRM_FORMAT_NV42,		.depth = 0,  .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1 },
+		{ .format = DRM_FORMAT_XV15,		.depth = 0,  .num_planes = 2, .pixels_per_macropixel = { 3, 3, 0 }, .bytes_per_macropixel = { 4, 8, 0 }, .hsub = 2, .vsub = 2, },
+		{ .format = DRM_FORMAT_XV20,		.depth = 0,  .num_planes = 2, .pixels_per_macropixel = { 3, 3, 0 }, .bytes_per_macropixel = { 4, 8, 0 }, .hsub = 2, .vsub = 1, },
 		{ .format = DRM_FORMAT_YUYV,		.depth = 0,  .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
 		{ .format = DRM_FORMAT_YVYU,		.depth = 0,  .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
 		{ .format = DRM_FORMAT_UYVY,		.depth = 0,  .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index e04613d..6ac5282 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -142,6 +142,14 @@ extern "C" {
 #define DRM_FORMAT_NV42		fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */
 
 /*
+ * 2 plane 10 bit per component YCbCr
+ * index 0 = Y plane, [31:0] x:Y2:Y1:Y0 2:10:10:10 little endian
+ * index 1 = Cb:Cr plane, [63:0] x:Cb2:Cr2:Cb1:x:Cr1:Cb0:Cr0 2:10:10:10:2:10:10:10 little endian
+ */
+#define DRM_FORMAT_XV15		fourcc_code('X', 'V', '1', '5') /* 2x2 subsampled Cb:Cr plane 2:10:10:10 */
+#define DRM_FORMAT_XV20		fourcc_code('X', 'V', '2', '0') /* 2x1 subsampled Cb:Cr plane 2:10:10:10 */
+
+/*
  * 3 plane YCbCr
  * index 0: Y plane, [7:0] Y
  * index 1: Cb plane, [7:0] Cb
-- 
2.7.4