aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/i915/intel_drv.h
diff options
context:
space:
mode:
authorCarl Worth <cworth@cworth.org>2009-04-29 17:43:54 -0400
committerEric Anholt <eric@anholt.net>2009-05-14 19:00:32 -0400
commit08d7b3d1edff84bd673d9e9ab36b5aa62e1ba903 (patch)
tree0dcbb40ceb39aafab750bb06e2cd165dd906f8d3 /drivers/gpu/drm/i915/intel_drv.h
parent9d2949a4cdb77b9b5c243c79be6489d34d770c7c (diff)
drm/i915: Add new GET_PIPE_FROM_CRTC_ID ioctl.
This allows userlevel code to discover the pipe number corresponding to a given CRTC ID. This is necessary for doing pipe-specific operations such as waiting for vblank on a given CRTC. Failure to use the right pipe mapping can result in GPU hangs, or at least failure to actually sync to vblank. Signed-off-by: Carl Worth <cworth@cworth.org> [anholt: Style touchups from review] Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_drv.h')
-rw-r--r--drivers/gpu/drm/i915/intel_drv.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index cf294302893..cd4b9c5f715 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -125,6 +125,8 @@ extern struct drm_encoder *intel_best_encoder(struct drm_connector *connector);
125 125
126extern struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev, 126extern struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
127 struct drm_crtc *crtc); 127 struct drm_crtc *crtc);
128int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
129 struct drm_file *file_priv);
128extern void intel_wait_for_vblank(struct drm_device *dev); 130extern void intel_wait_for_vblank(struct drm_device *dev);
129extern struct drm_crtc *intel_get_crtc_from_pipe(struct drm_device *dev, int pipe); 131extern struct drm_crtc *intel_get_crtc_from_pipe(struct drm_device *dev, int pipe);
130extern struct drm_crtc *intel_get_load_detect_pipe(struct intel_output *intel_output, 132extern struct drm_crtc *intel_get_load_detect_pipe(struct intel_output *intel_output,