On Thu, Jan 16, 2014 at 05:55:06PM +0000, Damien Lespiau wrote: > > + /* Wait 2 vblanks to be sure we will have the correct CRC value */ > > + intel_wait_for_vblank(dev, intel_crtc->pipe); > > + intel_wait_for_vblank(dev, intel_crtc->pipe); > > I think there's a better way to do this. There's a TEST_CRC_COUNT in > TEST_SINK_MISC that is incremented everytime the CRCs are updated. You > could: > * start by grabbing TEST_CRC_COUNT > * have a loop that waits for a vblank, check if the TEST_CRC_COUNT has > changed > * return the new CRC if the update has occured > * or give up after a number of waits (say 10) There seem to be support for an interrupt to come from the device to signal the CRCs are ready (AUTOMATED_TEST_REQUEST of DEVICE_SERVICE_IRQ_VECTOR), but that's pushing it :) -- Damien _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
