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

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;