Merge branch 'drm-vbl-timestamp' of git://gitorious.org/vsyrjala/linux into drm-next

Here's the vblank timestamp pull request you wanted.

I addressed the few bugs that Mario pointed out and added
the r-bs.

As it has been a while since I made the changes, I gave it a
quick spin on a few different i915 machines. Fortunately
everything still seems to be fine.

* 'drm-vbl-timestamp' of git://gitorious.org/vsyrjala/linux:
  drm/i915: Add a kludge for DSL incrementing too late and ISR not working
  drm/radeon: Move the early vblank IRQ fixup to radeon_get_crtc_scanoutpos()
  drm: Pass 'flags' from the caller to .get_scanout_position()
  drm: Fix vblank timestamping constants for interlaced modes
  drm/i915: Fix scanoutpos calculations for interlaced modes
  drm: Change {pixel,line,frame}dur_ns from s64 to int
  drm: Use crtc_clock in drm_calc_timestamping_constants()
  drm/radeon: Populate crtc_clock in radeon_atom_get_tv_timings()
  drm: Simplify the math in drm_calc_timestamping_constants()
  drm: Improve drm_calc_timestamping_constants() documentation
  drm/i915: Call drm_calc_timestamping_constants() earlier
  drm/i915: Kill hwmode save/restore
  drm: Pass the display mode to drm_calc_vbltimestamp_from_scanoutpos()
  drm: Pass the display mode to drm_calc_timestamping_constants()

include/drm/drmP.h

@@ -845,6 +845,7 @@ struct drm_driver {
 	 *
 	 * \param dev  DRM device.
 	 * \param crtc Id of the crtc to query.
+	 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
 	 * \param *vpos Target location for current vertical scanout position.
 	 * \param *hpos Target location for current horizontal scanout position.
 	 * \param *stime Target location for timestamp taken immediately before
@@ -867,6 +868,7 @@ struct drm_driver {
 	 *
 	 */
 	int (*get_scanout_position) (struct drm_device *dev, int crtc,
+				     unsigned int flags,
 				     int *vpos, int *hpos, ktime_t *stime,
 				     ktime_t *etime);
 
@@ -1401,8 +1403,10 @@ extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
 						 int crtc, int *max_error,
 						 struct timeval *vblank_time,
 						 unsigned flags,
-						 struct drm_crtc *refcrtc);
-extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
+						 const struct drm_crtc *refcrtc,
+						 const struct drm_display_mode *mode);
+extern void drm_calc_timestamping_constants(struct drm_crtc *crtc,
+					    const struct drm_display_mode *mode);
 
 extern bool
 drm_mode_parse_command_line_for_connector(const char *mode_option,

include/drm/drm_crtc.h

@@ -449,7 +449,7 @@ struct drm_crtc {
 	uint16_t *gamma_store;
 
 	/* Constants needed for precise vblank and swap timestamping. */
-	s64 framedur_ns, linedur_ns, pixeldur_ns;
+	int framedur_ns, linedur_ns, pixeldur_ns;
 
 	/* if you are using the helper */
 	void *helper_private;