Color Manager framework defines a color correction property for color space transformation and Gamut mapping. This property is called CTM (Color Transformation Matrix).
This patch adds a new structure in DRM layer for CTM color correction. This structure will be used by all user space agents to configure CTM coefficients for color correction.
Signed-off-by: Shashank Sharma shashank.sharma@intel.com Signed-off-by: Kausal Malladi Kausal.Malladi@intel.com --- include/uapi/drm/drm.h | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index f72b916..9580772 100644 --- a/include/uapi/drm/drm.h +++ b/include/uapi/drm/drm.h @@ -867,6 +867,18 @@ struct drm_palette { struct drm_r32g32b32 lut[0]; };
+struct drm_ctm { + /* Structure version. Should be 1 currently */ + __u32 version; + /* + * Each value is in S31.32 format. + * This is 3x3 matrix in row major format. + * Integer part will be clipped to nearest + * max/min boundary as supported by the HW platform. + */ + __s64 ctm_coeff[9]; +}; + /* typedef area */ #ifndef __KERNEL__ typedef struct drm_clip_rect drm_clip_rect_t;