Define helper function to enable Plane color features to attach plane color properties to plane structure.
v2: Rebase
v3: Modiefied the function to use updated property names.
Signed-off-by: Uma Shankar uma.shankar@intel.com --- drivers/gpu/drm/drm_plane.c | 42 ++++++++++++++++++++++++++++++++++++++++++ include/drm/drm_color_mgmt.h | 5 +++++ 2 files changed, 47 insertions(+)
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index b837020..bbf55c5 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -144,6 +144,48 @@ static int create_in_format_blob(struct drm_device *dev, struct drm_plane *plane }
/** + * drm_plane_enable_color_mgmt - enable color management properties + * @plane: DRM Plane + * @plane_degamma_lut_size: the size of the degamma lut (before CSC) + * @plane_has_ctm: whether to attach ctm_property for CSC matrix + * @plane_gamma_lut_size: the size of the gamma lut (after CSC) + * + * This function lets the driver enable the color correction + * properties on a plane. This includes 3 degamma, csc and gamma + * properties that userspace can set and 2 size properties to inform + * the userspace of the lut sizes. Each of the properties are + * optional. The gamma and degamma properties are only attached if + * their size is not 0 and ctm_property is only attached if has_ctm is + * true. + */ +void drm_plane_enable_color_mgmt(struct drm_plane *plane, + uint plane_degamma_lut_size, + bool plane_has_ctm, + uint plane_gamma_lut_size) +{ + if (plane_degamma_lut_size) { + drm_object_attach_property(&plane->base, + plane->degamma_lut_property, 0); + drm_object_attach_property(&plane->base, + plane->degamma_lut_size_property, + plane_degamma_lut_size); + } + + if (plane_has_ctm) + drm_object_attach_property(&plane->base, + plane->ctm_property, 0); + + if (plane_gamma_lut_size) { + drm_object_attach_property(&plane->base, + plane->gamma_lut_property, 0); + drm_object_attach_property(&plane->base, + plane->gamma_lut_size_property, + plane_gamma_lut_size); + } +} +EXPORT_SYMBOL(drm_plane_enable_color_mgmt); + +/** * drm_universal_plane_init - Initialize a new universal plane object * @dev: DRM device * @plane: plane object to init diff --git a/include/drm/drm_color_mgmt.h b/include/drm/drm_color_mgmt.h index b3b6d30..e220019 100644 --- a/include/drm/drm_color_mgmt.h +++ b/include/drm/drm_color_mgmt.h @@ -56,4 +56,9 @@ int drm_plane_create_color_properties(struct drm_plane *plane, u32 supported_ranges, enum drm_color_encoding default_encoding, enum drm_color_range default_range); + +void drm_plane_enable_color_mgmt(struct drm_plane *plane, + uint plane_degamma_lut_size, + bool plane_has_ctm, + uint plane_gamma_lut_size); #endif