[PATCH v4 1/2] drm_fourcc: Add new P010, P016 video format

[clinton.a.taylor at intel.com]

From: Clint Taylor <clinton.a.taylor at intel.com>

P010 is a planar 4:2:0 YUV with interleaved UV plane, 10 bits per
channel video format. Rockchip's vop support this video format(little
endian only) as the input video format.

P016 is a planar 4:2:0 YUV 12 bits per channel

P016 is a planar 4:2:0 YUV with interleaved UV plane, 16 bits per
channel video format.

V3: Added P012 and fixed cpp for P010
V4: format definition refined per review

Cc: Daniel Stone <daniel at fooishbar.org>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>

Signed-off-by: Randy Li <ayaka at soulik.info>
Signed-off-by: Clint Taylor <clinton.a.taylor at intel.com>
---
 drivers/gpu/drm/drm_fourcc.c  |    4 ++++
 include/uapi/drm/drm_fourcc.h |   18 ++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index 90d2cc8..5494764 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -165,6 +165,10 @@ 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 },
 		{ .format = DRM_FORMAT_VYUY,		.depth = 0,  .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
 		{ .format = DRM_FORMAT_AYUV,		.depth = 0,  .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
+		/* FIXME a pixel in Y for P010 is 10 bits */
+		{ .format = DRM_FORMAT_P010,		.depth = 0,  .num_planes = 2, .cpp = { 2, 4, 0 }, .hsub = 2, .vsub = 2 },
+		{ .format = DRM_FORMAT_P012,		.depth = 0,  .num_planes = 2, .cpp = { 2, 4, 0 }, .hsub = 2, .vsub = 2 },
+		{ .format = DRM_FORMAT_P016,		.depth = 0,  .num_planes = 2, .cpp = { 2, 4, 0 }, .hsub = 2, .vsub = 2 },
 	};
 
 	unsigned int i;
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index ef20abb..ad94464 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -128,6 +128,24 @@
 #define DRM_FORMAT_NV42		fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */
 
 /*
+ * 2 plane YCbCr MSB aligned P0?? formats
+ * index 0 = Y plane, word array [15:6] P010
+ * or
+ * index 0 = Y plane, word array [15:4] P012
+ * or 
+ * index 0 = Y plane, word array [15:0] P016
+ *
+ * index 1 = Cb:Cr plane, [31:22] Cb [15:6] Cr little endian P010
+ * or
+ * index 1 = Cb:Cr plane, [31:20] Cb [15:4] Cr little endian P012
+ * or
+ * index 1 = Cb:Cr plane, [31:16] Cb [15:0] Cr little endian P016
+ */
+#define DRM_FORMAT_P010		fourcc_code('P', '0', '1', '0') /* 2x2 subsampled Cb:Cr plane 10 bits per channel */
+#define DRM_FORMAT_P012		fourcc_code('P', '0', '1', '2') /* 2x2 subsampled Cb:Cr plane 12 bits per channel */
+#define DRM_FORMAT_P016		fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cb:Cr plane 16 bits per channel */
+
+/*
  * 3 plane YCbCr
  * index 0: Y plane, [7:0] Y
  * index 1: Cb plane, [7:0] Cb
-- 
1.7.9.5