From: "uma.shankar at intel.com (Uma Shankar)" <uma.shankar@xxxxxxxxx> Define helper function to enable Plane color features to attach plane color properties to plane structure. (am from https://patchwork.kernel.org/patch/9971333/) Change-Id: I0a6647607fe482786e7cdb5f997faf196b2f59a2 Signed-off-by: Uma Shankar <uma.shankar at intel.com> --- drivers/gpu/drm/drm_plane.c | 48 ++++++++++++++++++++++++++++++++++++ include/drm/drm_color_mgmt.h | 5 ++++ 2 files changed, 53 insertions(+) diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index 2c90519576a3e..bc2fc5e6771ac 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -143,6 +143,54 @@ static int create_in_format_blob(struct drm_device *dev, struct drm_plane *plane return 0; } + /** + * 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. + * + * Drivers should use drm_atomic_helper_legacy_gamma_set() to implement the + * legacy &drm_crtc_funcs.gamma_set callback. + */ +void drm_plane_enable_color_mgmt(struct drm_plane *plane, + uint plane_degamma_lut_size, + bool plane_has_ctm, + uint plane_gamma_lut_size) +{ + struct drm_device *dev = plane->dev; + struct drm_mode_config *config = &dev->mode_config; + + if (plane_degamma_lut_size) { + drm_object_attach_property(&plane->base, + config->plane_degamma_lut_property, 0); + drm_object_attach_property(&plane->base, + config->plane_degamma_lut_size_property, + plane_degamma_lut_size); + } + + if (plane_has_ctm) + drm_object_attach_property(&plane->base, + config->plane_ctm_property, 0); + + if (plane_gamma_lut_size) { + drm_object_attach_property(&plane->base, + config->plane_gamma_lut_property, 0); + drm_object_attach_property(&plane->base, + config->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 diff --git a/include/drm/drm_color_mgmt.h b/include/drm/drm_color_mgmt.h index 03a59cbce6212..155a9ba38471c 100644 --- a/include/drm/drm_color_mgmt.h +++ b/include/drm/drm_color_mgmt.h @@ -37,4 +37,9 @@ void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc, int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, int gamma_size); +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 -- 2.16.1.291.g4437f3f132-goog _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
