On Fri, 28 Mar 2014 23:29:32 +0200 ville.syrjala@xxxxxxxxxxxxxxx wrote: > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > If vsyncshift comes out as negative, add one htotal to it to get the > corresponding positive value. > > This is rather theoretical as it would require a mode where the > hsync+back porch is very long and the active+front porch very short. > > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > --- > drivers/gpu/drm/i915/intel_display.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c > index 3ab40e3..7d3b18b 100644 > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -5377,7 +5377,8 @@ static void intel_set_pipe_timings(struct intel_crtc *intel_crtc) > enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder; > struct drm_display_mode *adjusted_mode = > &intel_crtc->config.adjusted_mode; > - uint32_t vsyncshift = 0, crtc_vtotal, crtc_vblank_end; > + uint32_t crtc_vtotal, crtc_vblank_end; > + int vsyncshift = 0; > > /* We need to be careful not to changed the adjusted mode, for otherwise > * the hw state checker will get angry at the mismatch. */ > @@ -5394,6 +5395,8 @@ static void intel_set_pipe_timings(struct intel_crtc *intel_crtc) > else > vsyncshift = adjusted_mode->crtc_hsync_start - > adjusted_mode->crtc_htotal / 2; > + if (vsyncshift < 0) > + vsyncshift += adjusted_mode->crtc_htotal; > } > > if (INTEL_INFO(dev)->gen > 3) Funky indeed. I wonder if we should congratulate the user if we detect this configuration. "Achievement unlocked: funky mode timings!". Reviewed-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> -- Jesse Barnes, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
