Color Manager framework defines a DRM 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. This structure can 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 kausalmalladi@gmail.com --- include/uapi/drm/drm.h | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index 681d5af..f347c69 100644 --- a/include/uapi/drm/drm.h +++ b/include/uapi/drm/drm.h @@ -855,6 +855,16 @@ struct drm_palette { struct drm_r32g32b32 lut[0]; };
+struct drm_ctm { + /* + * 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;