From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx> Hi This series gets rid of those messages saying that the vblank wait timed out on my Haswell machine. It saves 2 timeouts per pipe (one at mode_set, one at crtc_enable), so it's 100ms we save per modeset. The big idea exercised by this patch is that the pipe doesn't really start running after we enable PIPECONF, so we had some useless waits. This idea probably also applies to ILK/SNB/IVB and perhaps we could try to save some vblanks on those Gens too. I tested these patches on top of the 4 patches that fix the Haswell underruns + the 2 IPS patches I just sent. Thanks, Paulo Paulo Zanoni (4): drm/i915: WARN in case PIPECONF is already enabled drm/i915: don't intel_wait_for_vblank inside intel_enable_pipe drm/i915: remove useless vblank wait form haswell_crtc_enable drm/i915: skip useless vblank wait on Haswell audio sequence drivers/gpu/drm/i915/intel_display.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) -- 1.8.3.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
