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drm: Add drm_mode_create_rotation_property() 

Add a function to create a standards compliant rotation property.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Acked-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-07-08 10:31:53 +05:30 committed by Daniel Vetter
parent 7689ffb32f
commit c1df5f3c2d
2 changed files with 20 additions and 0 deletions
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18
drivers/gpu/drm/drm_crtc.c
View File

@ -4959,3 +4959,21 @@ void drm_mode_config_cleanup(struct drm_device *dev)
drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
}
EXPORT_SYMBOL(drm_mode_config_cleanup);
struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev,
unsigned int supported_rotations)
{
static const struct drm_prop_enum_list props[] = {
{ DRM_ROTATE_0, "rotate-0" },
{ DRM_ROTATE_90, "rotate-90" },
{ DRM_ROTATE_180, "rotate-180" },
{ DRM_ROTATE_270, "rotate-270" },
{ DRM_REFLECT_X, "reflect-x" },
{ DRM_REFLECT_Y, "reflect-y" },
};
return drm_property_create_bitmask(dev, 0, "rotation",
props, ARRAY_SIZE(props),
supported_rotations);
}
EXPORT_SYMBOL(drm_mode_create_rotation_property);

2
include/drm/drm_crtc.h
View File

@ -1113,6 +1113,8 @@ 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_rotation_property(struct drm_device *dev,
unsigned int supported_rotations);
/* Helpers */