From: Sagar Kamble sagar.a.kamble@intel.com
This patch creates a generic blending bitmask property modeled after glBlendFunc. Drivers may support subset of these values.
v2: Removing blend properties that are not applicable [Damien's Review Comments]. Adding DRM_MODE_PROP_32BIT_PAIR flag to blend property.
Cc: airlied@linux.ie Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Sagar Kamble sagar.a.kamble@intel.com --- drivers/gpu/drm/drm_crtc.c | 27 +++++++++++++++++++++++++++ include/drm/drm_crtc.h | 19 +++++++++++++++++++ 2 files changed, 46 insertions(+)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index d0d03ec..a1f254e 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -4157,3 +4157,30 @@ void drm_mode_config_cleanup(struct drm_device *dev) idr_destroy(&dev->mode_config.crtc_idr); } EXPORT_SYMBOL(drm_mode_config_cleanup); + +struct drm_property *drm_mode_create_blend_property(struct drm_device *dev, + unsigned int supported_factors) +{ + static const struct drm_prop_enum_list props[] = { + { DRM_BLEND_ZERO, "zero" }, + { DRM_BLEND_ONE, "one" }, + { DRM_BLEND_SRC_COLOR, "src-color" }, + { DRM_BLEND_ONE_MINUS_SRC_COLOR, "one-minus-src-color" }, + { DRM_BLEND_DST_COLOR, "dst-color" }, + { DRM_BLEND_ONE_MINUS_DST_COLOR, "one-minus-dst-color" }, + { DRM_BLEND_SRC_ALPHA, "src-alpha" }, + { DRM_BLEND_ONE_MINUS_SRC_ALPHA, "one-minus-src-alpha" }, + { DRM_BLEND_DST_ALPHA, "dst-alpha" }, + { DRM_BLEND_ONE_MINUS_DST_ALPHA, "one-minus-dst-alpha" }, + { DRM_BLEND_CONSTANT_COLOR, "constant-color" }, + { DRM_BLEND_ONE_MINUS_CONSTANT_COLOR, "one-minus-constant-color" }, + { DRM_BLEND_CONSTANT_ALPHA, "constant-alpha" }, + { DRM_BLEND_ONE_MINUS_CONSTANT_ALPHA, "one-minus-constant-alpha" }, + { DRM_BLEND_SRC_ALPHA_SATURATE, "alpha-saturate" } + }; + + return drm_property_create_bitmask(dev, DRM_MODE_PROP_32BIT_PAIR, "blend", + props, ARRAY_SIZE(props), + supported_factors); +} +EXPORT_SYMBOL(drm_mode_create_blend_property); diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 784a568..a9fbfec 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -65,6 +65,23 @@ struct drm_object_properties { uint64_t values[DRM_OBJECT_MAX_PROPERTY]; };
+/* Blending property bits */ +#define DRM_BLEND_ZERO 0 +#define DRM_BLEND_ONE 1 +#define DRM_BLEND_SRC_COLOR 2 +#define DRM_BLEND_ONE_MINUS_SRC_COLOR 3 +#define DRM_BLEND_DST_COLOR 4 +#define DRM_BLEND_ONE_MINUS_DST_COLOR 5 +#define DRM_BLEND_SRC_ALPHA 6 +#define DRM_BLEND_ONE_MINUS_SRC_ALPHA 7 +#define DRM_BLEND_DST_ALPHA 8 +#define DRM_BLEND_ONE_MINUS_DST_ALPHA 9 +#define DRM_BLEND_CONSTANT_COLOR 10 +#define DRM_BLEND_ONE_MINUS_CONSTANT_COLOR 11 +#define DRM_BLEND_CONSTANT_ALPHA 12 +#define DRM_BLEND_ONE_MINUS_CONSTANT_ALPHA 13 +#define DRM_BLEND_SRC_ALPHA_SATURATE 14 + /* * Note on terminology: here, for brevity and convenience, we refer to connector * control chips as 'CRTCs'. They can control any type of connector, VGA, LVDS, @@ -1179,6 +1196,8 @@ extern int drm_format_plane_cpp(uint32_t format, int plane); extern int drm_format_horz_chroma_subsampling(uint32_t format); extern int drm_format_vert_chroma_subsampling(uint32_t format); extern const char *drm_get_format_name(uint32_t format); +extern struct drm_property *drm_mode_create_blend_property(struct drm_device *dev, + unsigned int supported_factors);
/* Helpers */ static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev,