diff options
Diffstat (limited to 'drivers/gpu/drm/drm_blend.c')
| -rw-r--r-- | drivers/gpu/drm/drm_blend.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_blend.c b/drivers/gpu/drm/drm_blend.c index 85172a977bf3..e52aece30900 100644 --- a/drivers/gpu/drm/drm_blend.c +++ b/drivers/gpu/drm/drm_blend.c @@ -162,6 +162,41 @@ struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev, } EXPORT_SYMBOL(drm_mode_create_rotation_property); +int drm_plane_create_rotation_property(struct drm_plane *plane, + unsigned int rotation, + unsigned int supported_rotations) +{ + static const struct drm_prop_enum_list props[] = { + { __builtin_ffs(DRM_ROTATE_0) - 1, "rotate-0" }, + { __builtin_ffs(DRM_ROTATE_90) - 1, "rotate-90" }, + { __builtin_ffs(DRM_ROTATE_180) - 1, "rotate-180" }, + { __builtin_ffs(DRM_ROTATE_270) - 1, "rotate-270" }, + { __builtin_ffs(DRM_REFLECT_X) - 1, "reflect-x" }, + { __builtin_ffs(DRM_REFLECT_Y) - 1, "reflect-y" }, + }; + struct drm_property *prop; + + WARN_ON((supported_rotations & DRM_ROTATE_MASK) == 0); + WARN_ON(!is_power_of_2(rotation & DRM_ROTATE_MASK)); + WARN_ON(rotation & ~supported_rotations); + + prop = drm_property_create_bitmask(plane->dev, 0, "rotation", + props, ARRAY_SIZE(props), + supported_rotations); + if (!prop) + return -ENOMEM; + + drm_object_attach_property(&plane->base, prop, rotation); + + if (plane->state) + plane->state->rotation = rotation; + + plane->rotation_property = prop; + + return 0; +} +EXPORT_SYMBOL(drm_plane_create_rotation_property); + /** * drm_rotation_simplify() - Try to simplify the rotation * @rotation: Rotation to be simplified |