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drm: drm_fourcc: add NV20 and NV30 format

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DRM_FORMAT_NV20 and DRM_FORMAT_NV30 is a 2 plane format suitable for
linear layouts, this two format is similar to NV15 has no padding
between component, but NV15 is 4:2:0 sub-sampling, NV20 is 4:2:2
sub-sampling and NV30 is no-sampling.

The '20' and '30' suffix refers to the optimum effective bits per
pixel which is achieved.

Signed-off-by: Sandy Huang <hjc@rock-chips.com>
Change-Id: I84da7e03125e675f274c6307128b4b7b307767cc
This commit is contained in:
Sandy Huang
2021-07-08 14:32:44 +08:00
committed by Tao Huang
parent 255e14f4b3
commit 9fad8c5fa8
2 changed files with 12 additions and 0 deletions
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10
drivers/gpu/drm/drm_fourcc.c
View File

@@ -278,6 +278,16 @@ const struct drm_format_info *__drm_format_info(u32 format)
.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 },
#ifdef CONFIG_NO_GKI
{ .format = DRM_FORMAT_NV20, .depth = 0,
.num_planes = 2, .char_per_block = { 5, 5, 0 },
.block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
.vsub = 1, .is_yuv = true },
{ .format = DRM_FORMAT_NV30, .depth = 0,
.num_planes = 2, .char_per_block = { 5, 5, 0 },
.block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 1,
.vsub = 1, .is_yuv = true },
#endif
{ .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,

2
include/uapi/drm/drm_fourcc.h
View File

@@ -242,6 +242,8 @@ extern "C" {
* index 1 = Cr:Cb plane, [39:0] Cr1:Cb1:Cr0:Cb0 little endian
*/
#define DRM_FORMAT_NV15 fourcc_code('N', 'V', '1', '5') /* 2x2 subsampled Cr:Cb plane */
#define DRM_FORMAT_NV20 fourcc_code('N', 'V', '2', '0') /* 2x1 subsampled Cr:Cb plane */
#define DRM_FORMAT_NV30 fourcc_code('N', 'V', '3', '0') /* non-subsampled Cr:Cb plane */
/*
* 2 plane YCbCr MSB aligned