Add greyscale Y8 format.
Acked-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
Signed-off-by: Tomi Valkeinen <tomi.valkei...@ideasonboard.com>
---
drivers/gpu/drm/drm_fourcc.c | 1 +
include/uapi/drm/drm_fourcc.h | 10 ++++++++++
2 files changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index e101d1b99aeb..355aaf7b5e9e 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -267,6 +267,7 @@ const struct drm_format_info *__drm_format_info(u32 format)
{ .format = DRM_FORMAT_YVU422, .depth = 0,
.num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true },
{ .format = DRM_FORMAT_YUV444, .depth = 0,
.num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true },
{ .format = DRM_FORMAT_YVU444, .depth = 0,
.num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true },
+ { .format = DRM_FORMAT_Y8, .depth = 8,
.num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
{ .format = DRM_FORMAT_NV12, .depth = 0,
.num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true },
{ .format = DRM_FORMAT_NV21, .depth = 0,
.num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true },
{ .format = DRM_FORMAT_NV16, .depth = 0,
.num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 1247b814bd66..5af64a683dd7 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -405,6 +405,16 @@ extern "C" {
#define DRM_FORMAT_YUV444 fourcc_code('Y', 'U', '2', '4') /*
non-subsampled Cb (1) and Cr (2) planes */
#define DRM_FORMAT_YVU444 fourcc_code('Y', 'V', '2', '4') /*
non-subsampled Cr (1) and Cb (2) planes */
+/*
+ * Y-only (greyscale) formats
+ *
+ * The Y-only formats are handled similarly to the YCbCr formats in the display
+ * pipeline, with the Cb and Cr implicitly neutral (0.0 in nominal values).
This
+ * also means that COLOR_RANGE property applies to the Y-only formats.
+ *
+ */
+
+#define DRM_FORMAT_Y8 fourcc_code('G', 'R', 'E', 'Y') /* 8-bit
Y-only */
/*
* Format Modifiers:
--
2.43.0
