On 8/27/2018 12:47 PM, Kumar, Mahesh wrote:
Hi,
On 8/27/2018 12:17 PM, Swati Sharma wrote:
From: Vidya Srinivas <vidya.srinivas@xxxxxxxxx>
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.
Y210: Valid data occupies MSB 10 bits.
LSB 6 bits are filled with zeroes.
Y212: Valid data occupies MSB 12 bits.
LSB 4 bits are filled with zeroes.
Y216: 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@xxxxxxxxx>
Signed-off-by: Vidya Srinivas <vidya.srinivas@xxxxxxxxx>
---
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 },
};
you should also set is_yuv to true.
Apart from this there can be different order for YUV samples, Are you
going to add those as well?
-Mahesh
unsigned int i;
diff --git a/include/uapi/drm/drm_fourcc.h
b/include/uapi/drm/drm_fourcc.h
index 2ed46e9..6a03e6d 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -149,6 +149,10 @@
#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
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