diff options
| author | Chandra Konduru <chandra.konduru@intel.com> | 2015-04-10 03:36:21 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-04-10 09:56:21 +0300 |
| commit | f81338a52a82009863b0dc9d597fe1000d1caff6 (patch) | |
| tree | 3c2b72230131843b2a4b244fa5c8fb60dc3acadd /drivers/gpu/drm/drm_crtc.c | |
| parent | 595e1eeb26d3fcf2e39b494f067ebb5eb3c77e08 (diff) | |
| download | linux-f81338a52a82009863b0dc9d597fe1000d1caff6.tar.xz | |
drm: Adding drm helper function drm_plane_from_index().
Adding drm helper function to return plane pointer from index where
index is a returned by drm_plane_index.
v2:
-avoided nested loop by adding loop count (Daniel)
v3:
-updated patch header prefix to 'drm' (Matt)
v4:
-fixed a kerneldoc issue (kbuild-internal)
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Chandra Konduru <chandra.konduru@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/drm_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 9f970c2d4819..6254942141d3 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -1286,6 +1286,29 @@ unsigned int drm_plane_index(struct drm_plane *plane) EXPORT_SYMBOL(drm_plane_index); /** + * drm_plane_from_index - find the registered plane at an index + * @dev: DRM device + * @idx: index of registered plane to find for + * + * Given a plane index, return the registered plane from DRM device's + * list of planes with matching index. + */ +struct drm_plane * +drm_plane_from_index(struct drm_device *dev, int idx) +{ + struct drm_plane *plane; + unsigned int i = 0; + + list_for_each_entry(plane, &dev->mode_config.plane_list, head) { + if (i == idx) + return plane; + i++; + } + return NULL; +} +EXPORT_SYMBOL(drm_plane_from_index); + +/** * drm_plane_force_disable - Forcibly disable a plane * @plane: plane to disable * |