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| author | Ben Davis <ben.davis@arm.com> | 2020-06-01 19:28:17 +0300 |
|---|---|---|
| committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2020-06-19 15:33:40 +0300 |
| commit | 94b292b277343190175d39172c903c0c5fb814f1 (patch) | |
| tree | 717d75b1547f0aa6f46dce19cdf681d898c28538 /drivers | |
| parent | 114427b8927a4def2942b2b886f7e4aeae289ccb (diff) | |
| download | linux-94b292b277343190175d39172c903c0c5fb814f1.tar.xz | |
drm: drm_fourcc: add NV15, Q410, Q401 YUV formats
DRM_FORMAT_NV15 is a 2 plane format suitable for linear and 16x16
block-linear memory layouts (DRM_FORMAT_MOD_SAMSUNG_16_16_TILE). The
format is similar to P010 with 4:2:0 sub-sampling but has no padding
between components. Instead, luminance and chrominance samples are
grouped into 4s so that each group is packed into an integer number
of bytes:
YYYY = UVUV = 4 * 10 bits = 40 bits = 5 bytes
The '15' suffix refers to the optimum effective bits per pixel which is
achieved when the total number of luminance samples is a multiple of 8.
Q410 and Q401 are both 3 plane non-subsampled formats with 16 bits per
component, but only 10 bits are used and 6 are padded. 'Q' is chosen
as the first letter to denote 3 plane YUV444, (and is the next letter
along from P which is usually 2 plane).
V2: Updated block_w of NV15 to {4, 2, 0}
V3: Updated commit message to include specific modifier name
NV15:
Tested-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: Ben Davis <ben.davis@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200601162817.18230-1-ben.davis@arm.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_fourcc.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c index b234bfaeda06..722c7ebe4e88 100644 --- a/drivers/gpu/drm/drm_fourcc.c +++ b/drivers/gpu/drm/drm_fourcc.c @@ -274,6 +274,18 @@ const struct drm_format_info *__drm_format_info(u32 format) { .format = DRM_FORMAT_YUV420_10BIT, .depth = 0, .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true }, + { .format = DRM_FORMAT_NV15, .depth = 0, + .num_planes = 2, .char_per_block = { 5, 5, 0 }, + .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2, + .vsub = 2, .is_yuv = true }, + { .format = DRM_FORMAT_Q410, .depth = 0, + .num_planes = 3, .char_per_block = { 2, 2, 2 }, + .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 0, + .vsub = 0, .is_yuv = true }, + { .format = DRM_FORMAT_Q401, .depth = 0, + .num_planes = 3, .char_per_block = { 2, 2, 2 }, + .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 0, + .vsub = 0, .is_yuv = true }, }; unsigned int i; |