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Lines Matching refs:rotation

106  * rotation:
107  *	Rotation is set up with drm_plane_create_rotation_property(). It adds a
108  *	rotation and reflection step between the source and destination rectangles.
229  * drm_plane_create_rotation_property - create a new rotation property
231  * @rotation: initial value of the rotation property
236  * Since a rotation by 180° degress is the same as reflecting both along the x
237  * and the y axis the rotation property is somewhat redundant. Drivers can use
241  * drm_property_create_bitmask()) called "rotation" and has the following
257  * Rotation is the specified amount in degrees in counter clockwise direction,
259  * rotation. After reflection, the rotation is applied to the image sampled from
263 				       unsigned int rotation,
277 	WARN_ON(!is_power_of_2(rotation & DRM_MODE_ROTATE_MASK));
278 	WARN_ON(rotation & ~supported_rotations);
280 	prop = drm_property_create_bitmask(plane->dev, 0, "rotation",
286 	drm_object_attach_property(&plane->base, prop, rotation);
289 		plane->state->rotation = rotation;
298  * drm_rotation_simplify() - Try to simplify the rotation
299  * @rotation: Rotation to be simplified
302  * Attempt to simplify the rotation to a form that is supported.
306  * drm_rotation_simplify(rotation, DRM_MODE_ROTATE_0 |
315 unsigned int drm_rotation_simplify(unsigned int rotation,
318 	if (rotation & ~supported_rotations) {
319 		rotation ^= DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y;
320 		rotation = (rotation & DRM_MODE_REFLECT_MASK) |
321 		           BIT((ffs(rotation & DRM_MODE_ROTATE_MASK) + 1)
325 	return rotation;