On Fri, Oct 07, 2016 at 09:06:07PM +0300, Ville Syrjälä wrote: > On Fri, Oct 07, 2016 at 02:50:32PM +0100, Chris Wilson wrote: > > Whilst the vblank is configured to send an interrupt everytime, we need > > to keep the device awake to process those interrupts. > > If we can enable vblanks the pipe will be active, and thus we can't > runtime suspend anyway. Also might_sleep() would be a problem.
Where is the pipe made active? Is it just having any mode is sufficient to disable rpm? Will that always be the case? Just tracing from the drm_wait_vblank ioctl to the mmio access it didn't occur to me that there was a crtc wakeref. Choice is either using something like intel_runtime_pm_get_noresume() or /* CRTC must be kept alive whilst we enable vblanks */ assert_rpm...() And possibly even using the seq check. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
