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authorVille Syrjälä <ville.syrjala@linux.intel.com>2015-09-30 16:46:48 +0300
committerDaniel Vetter <daniel.vetter@ffwll.ch>2015-10-07 16:13:52 +0200
commitb44f84081b8db1b5830cbd30280ba1109cc1a084 (patch)
treebaf40d757f406812e9b2d624bf8bccf00845ac5c /include/drm/drmP.h
parent88e72717c2de4181d8a6de1b04315953ad2bebdf (diff)
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drm: Stop using drm_vblank_count() as the hw frame counter
drm_vblank_count() returns the software counter. We should not pretend it's the hw counter since we use the hw counter to figuere out what the software counter value should be. So instead provide a new function drm_vblank_no_hw_counter() for drivers that don't have a real hw counter. The new function simply returns 0, which is about the only thing it can do. Cc: Vincent Abriou <vincent.abriou@st.com> Cc: Thierry Reding <treding@nvidia.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Vincent Abriou <vincent.abriou@st.com> [danvet: s/int pipe/unsigned int pipe/ to follow Thierry's interface change.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'include/drm/drmP.h')
-rw-r--r--include/drm/drmP.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 1cb1e842e64d..3dc56d3413b7 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -953,6 +953,7 @@ extern void drm_crtc_vblank_off(struct drm_crtc *crtc);
extern void drm_crtc_vblank_reset(struct drm_crtc *crtc);
extern void drm_crtc_vblank_on(struct drm_crtc *crtc);
extern void drm_vblank_cleanup(struct drm_device *dev);
+extern u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe);
extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
unsigned int pipe, int *max_error,