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drm/fourcc: Add packed 10bit YUV 4:2:0 format

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Adds a format that is 3 10bit YUV 4:2:0 samples packed into
a 32bit work (with 2 spare bits).

Supported on Broadcom BCM2711 chips.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
This commit is contained in:
Dave Stevenson
2020-01-24 14:22:06 +00:00
committed by popcornmix
parent f6a3dc9be3
commit 539c6f3254
2 changed files with 14 additions and 0 deletions
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3
drivers/gpu/drm/drm_fourcc.c
View File

@@ -286,6 +286,9 @@ const struct drm_format_info *__drm_format_info(u32 format)
.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_P030, .depth = 0, .num_planes = 2,
.char_per_block = { 4, 4, 0 }, .block_w = { 3, 0, 0 }, .block_h = { 1, 0, 0 },
.hsub = 2, .vsub = 2, .is_yuv = true},
};
unsigned int i;

11
include/uapi/drm/drm_fourcc.h
View File

@@ -287,6 +287,13 @@ extern "C" {
*/
#define DRM_FORMAT_Q401 fourcc_code('Q', '4', '0', '1')
/*
* 2 plane YCbCr MSB aligned, 3 pixels packed into 4 bytes.
* index 0 = Y plane, [31:0] x:Y2:Y1:Y0 2:10:10:10 little endian
* index 1 = Cr:Cb plane, [63:0] x:Cr2:Cb2:Cr1:x:Cb1:Cr0:Cb0 [2:10:10:10:2:10:10:10] little endian
*/
#define DRM_FORMAT_P030 fourcc_code('P', '0', '3', '0') /* 2x2 subsampled Cr:Cb plane 10 bits per channel packed */
/*
* 3 plane YCbCr
* index 0: Y plane, [7:0] Y
@@ -777,6 +784,10 @@ drm_fourcc_canonicalize_nvidia_format_mod(__u64 modifier)
* and UV. Some SAND-using hardware stores UV in a separate tiled
* image from Y to reduce the column height, which is not supported
* with these modifiers.
*
* The DRM_FORMAT_MOD_BROADCOM_SAND128_COL_HEIGHT modifier is also
* supported for DRM_FORMAT_P030 where the columns remain as 128 bytes
* wide, but as this is a 10 bpp format that translates to 96 pixels.
*/
#define DRM_FORMAT_MOD_BROADCOM_SAND32_COL_HEIGHT(v) \