On Mon, 6 Dec 2021 at 11:01, Maxime Ripard maxime@cerno.tech wrote:
From: Dave Stevenson dave.stevenson@raspberrypi.com
Adds a format that is 3 10bit YUV 4:2:0 samples packed into a 32bit work (with 2 spare bits).
Quite possibly my typo, but s/work/word
Supported on Broadcom BCM2711 chips.
Signed-off-by: Dave Stevenson dave.stevenson@raspberrypi.com Signed-off-by: Maxime Ripard maxime@cerno.tech
drivers/gpu/drm/drm_fourcc.c | 3 +++ include/uapi/drm/drm_fourcc.h | 11 +++++++++++ 2 files changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c index 25837b1d6639..07741b678798 100644 --- a/drivers/gpu/drm/drm_fourcc.c +++ b/drivers/gpu/drm/drm_fourcc.c @@ -269,6 +269,9 @@ 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, 8, 0 }, .block_w = { 3, 3, 0 }, .block_h = { 1, 1, 0 },.hsub = 2, .vsub = 2, .is_yuv = true}, }; unsigned int i;diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index 7f652c96845b..fc0c1454d275 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -314,6 +314,13 @@ extern "C" { */ #define DRM_FORMAT_P016 fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cr:Cb plane 16 bits per channel */
+/* 2 plane YCbCr420.
- 3 10 bit components and 2 padding bits 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 non-subsampled (444) YCbCr
- 16 bits per component, but only 10 bits are used and 6 bits are padded
- index 0: Y plane, [15:0] Y:x [10:6] little endian
@@ -854,6 +861,10 @@ 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) \
2.33.1