drm: add drm_core_check_all_features() to check for a mask of features (12a1d4e0) · Commits · 戴 / test

include/drm/drm_drv.h

+22 −2

Original line number	Diff line number	Diff line
		@@ -823,6 +823,25 @@ static inline bool drm_dev_is_unplugged(struct drm_device *dev)
		return true;
		}

		/**
		* drm_core_check_all_features - check driver feature flags mask
		* @dev: DRM device to check
		* @features: feature flag(s) mask
		*
		* This checks @dev for driver features, see &drm_driver.driver_features,
		* &drm_device.driver_features, and the various &enum drm_driver_feature flags.
		*
		* Returns true if all features in the @features mask are supported, false
		* otherwise.
		*/
		static inline bool drm_core_check_all_features(const struct drm_device *dev,
		u32 features)
		{
		u32 supported = dev->driver->driver_features & dev->driver_features;

		return features && (supported & features) == features;
		}

		/**
		* drm_core_check_feature - check driver feature flags
		* @dev: DRM device to check
		@@ -833,9 +852,10 @@ static inline bool drm_dev_is_unplugged(struct drm_device *dev)
		*
		* Returns true if the @feature is supported, false otherwise.
		*/
		static inline bool drm_core_check_feature(const struct drm_device *dev, u32 feature)
		static inline bool drm_core_check_feature(const struct drm_device *dev,
		enum drm_driver_feature feature)
		{
		return dev->driver->driver_features & dev->driver_features & feature;
		return drm_core_check_all_features(dev, feature);
		}

		/**