-----Original Message----- From: Daniel Vetter [mailto:daniel.vetter@ffwll.ch] On Behalf Of Daniel Vetter Sent: Monday, March 23, 2015 2:33 AM To: Konduru, Chandra Cc: intel-gfx@lists.freedesktop.org; Conselvan De Oliveira, Ander; Vetter, Daniel Subject: Re: [Intel-gfx] [PATCH 01/21 v2] drm/i915: Adding drm helper function drm_plane_from_index().
On Fri, Mar 20, 2015 at 05:04:22PM -0700, Chandra Konduru wrote:
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)
Signed-off-by: Chandra Konduru chandra.konduru@intel.com
Sorry forgotten to mention this earlier, but any code touching drm core must be cc'ed to dri-devel. Best to just add a Cc: line before the sob line so that git send- email automatically picks it up every time. -Daniel
np, sure. By the way, copied dri-devel.
drivers/gpu/drm/drm_crtc.c | 22 ++++++++++++++++++++++ include/drm/drm_crtc.h | 1 + 2 files changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 9f970c2..b6703f4 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -1286,6 +1286,28 @@ 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
- @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
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 7b5c661..6b30036 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -1264,6 +1264,7 @@ extern int drm_plane_init(struct drm_device *dev, bool is_primary); extern void drm_plane_cleanup(struct drm_plane *plane); extern unsigned int drm_plane_index(struct drm_plane *plane); +extern struct drm_plane * drm_plane_from_index(struct drm_device +*dev, int idx); extern void drm_plane_force_disable(struct drm_plane *plane); extern int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format); -- 1.7.9.5
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-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch