This patch adds new structures in DRM layer for Palette color correction.These structures will be used by user space agents to configure appropriate number of samples and Palette LUT for a platform.
Signed-off-by: Shashank Sharma shashank.sharma@intel.com Signed-off-by: Kausal Malladi kausalmalladi@gmail.com --- include/uapi/drm/drm.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index 3801584..681d5af 100644 --- a/include/uapi/drm/drm.h +++ b/include/uapi/drm/drm.h @@ -829,6 +829,32 @@ struct drm_event_vblank { __u32 reserved; };
+struct drm_r32g32b32 { + /* + * Data is in U8.24 fixed point format. + * All platforms support values within [0, 1.0] range, + * for Red, Green and Blue colors. + */ + __u32 r32; + __u32 g32; + __u32 b32; + __u32 reserved; +}; + +struct drm_palette { + /* + * This has to be a supported value during get call. + * Feature will be disabled if this is 0 while set + */ + __u32 num_samples; + /* + * Starting of palette LUT in R32G32B32 format. + * Each of RGB value is in U8.24 fixed point format. + * Actual number of samples will depend upon num_samples + */ + struct drm_r32g32b32 lut[0]; +}; + /* typedef area */ #ifndef __KERNEL__ typedef struct drm_clip_rect drm_clip_rect_t;