Commit d9c38242 authored Nov 02, 2015 by Robert Fekete Committed by Daniel Vetter Nov 24, 2015

drm: Describe the Rotation property bits.

Adds clarification of the rotation property bits. I.e. rotation is
counter clockwise and that reflects are applied before any rotation.

v2: Refer to the define names instead of the property values.

Signed-off-by: Robert Fekete <robert.fekete@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

parent cb119717

include/drm/drm_crtc.h

+5 −1

Original line number	Diff line number	Diff line
		@@ -85,7 +85,11 @@ static inline uint64_t I642U64(int64_t val)
		return (uint64_t)((uint64_t )&val);
		}

		/* rotation property bits */
		/*
		* Rotation property bits. DRM_ROTATE_<degrees> rotates the image by the
		* specified amount in degrees in counter clockwise direction. DRM_REFLECT_X and
		* DRM_REFLECT_Y reflects the image along the specified axis prior to rotation
		*/
		#define DRM_ROTATE_MASK 0x0f
		#define DRM_ROTATE_0 0
		#define DRM_ROTATE_90 1