On 11-Jan-19 6:17 PM, Juha-Pekka Heikkila wrote:
On 11.1.2019 7.30, swati2.sharma@xxxxxxxxx wrote:
From: Swati Sharma <swati2.sharma@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 32bit.
Y210: For each component, valid data occupies MSB 10 bits.
LSB 6 bits are filled with zeroes.
Y212: For each component, valid data occupies MSB 12 bits.
LSB 4 bits are filled with zeroes.
Y216: For each component 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.
The following pixel formats are packed format that follows 4:4:4
chroma sampling. Channels are arranged in the order UYVA in
increasing memory order.
Y410: Each color component occupies 10 bits and X component
takes 2 bits, thus each pixel occupies 32 bits.
Y412: Each color component is 16 bits where valid data
occupies MSB 12 bits. LSB 4 bits are filled with zeroes.
Thus, each pixel occupies 64 bits.
Y416: Each color component occupies 16 bits for valid data,
doesn't require any padding bits. Thus, each pixel
occupies 64 bits.
Signed-off-by: Swati Sharma <swati2.sharma@xxxxxxxxx>
---
drivers/gpu/drm/drm_fourcc.c | 6 ++++++
include/uapi/drm/drm_fourcc.h | 18 +++++++++++++++++-
2 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index d90ee03..639ab93 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -226,6 +226,12 @@ const struct drm_format_info
*__drm_format_info(u32 format)
{ .format = DRM_FORMAT_VYUY, .depth = 0, .num_planes
= 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
{ .format = DRM_FORMAT_XYUV8888, .depth = 0, .num_planes
= 1, .cpp = { 4, 0, 0 }, .hsub = 1, .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, .is_yuv =
true },
+ { .format = DRM_FORMAT_Y212, .depth = 0,
.num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv =
true },
+ { .format = DRM_FORMAT_Y216, .depth = 0,
.num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv =
true },
+ { .format = DRM_FORMAT_Y410, .depth = 0,
.num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv =
true },
+ { .format = DRM_FORMAT_Y412, .depth = 0,
.num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv =
true },
+ { .format = DRM_FORMAT_Y416, .depth = 0,
.num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv =
true },
{ .format = DRM_FORMAT_Y0L0, .depth = 0, .num_planes
= 1,
.char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 },
.block_h = { 2, 0, 0 },
.hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true },
diff --git a/include/uapi/drm/drm_fourcc.h
b/include/uapi/drm/drm_fourcc.h
index 0b44260..97249a5 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -151,7 +151,23 @@
#define DRM_FORMAT_VYUY fourcc_code('V', 'Y', 'U', 'Y') /*
[31:0] Y1:Cb0:Y0:Cr0 8:8:8:8 little endian */
#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_XYUV8888 fourcc_code('X', 'Y', 'U', 'V')
/* [31:0] X:Y:Cb:Cr 8:8:8:8 little endian */
+#define DRM_FORMAT_XYUV8888 fourcc_code('X', 'Y', 'U', 'V') /*
[31:0] X:Y:Cb:Cr 8:8:8:8 little endian */
+
+/*
+ * packed Y2xx indicate for each component, xx valid data occupy msb
+ * 16-xx padding occupy lsb
+ */
+#define DRM_FORMAT_Y210 fourcc_code('Y', '2', '1', '0') /*
[63:0] Y0:x:Cb0:x:Y1:x:Cr1:x 10:6:10:6:10:6:10:6 little endian */
+#define DRM_FORMAT_Y212 fourcc_code('Y', '2', '1', '2') /*
[63:0] Y0:x:Cb0:x:Y1:x:Cr1:x 12:4:12:4:12:4:12:4 little endian */
+#define DRM_FORMAT_Y216 fourcc_code('Y', '2', '1', '6') /*
[63:0] Y0:Cb0:Y1:Cr1 16:16:16:16 little endian */
+
+/*
+ * packed Y4xx indicate for each component, xx valid data occupy msb
+ * 16-xx padding occupy lsb except Y410
+ */
+#define DRM_FORMAT_Y410 fourcc_code('Y', '4', '1', '0') /*
[31:0] X:V:Y:U 2:10:10:10 little endian */
+#define DRM_FORMAT_Y412 fourcc_code('Y', '4', '1', '2') /*
[64:0] X:x:V:x:Y:x:U:x 12:4:12:4:12:4:12:4 little endian */
+#define DRM_FORMAT_Y416 fourcc_code('Y', '4', '1', '6') /*
[64:0] X:V:Y:U 16:16:16:16 little endian */
^^
[63:0] maybe?
ohh sorry. Will correct in next patch series.
/Juha-Pekka
/*
* packed YCbCr420 2x2 tiled formats
--
Thanks and Regards,
Swati
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