On Wed, 19 Mar 2014, Daniel Vetter <daniel@xxxxxxxx> wrote: > On Tue, Mar 18, 2014 at 01:53:56PM -0700, Siva Chandra wrote: >> On Tue, Mar 18, 2014 at 1:06 PM, Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> wrote: >> > On Tue, 18 Mar 2014 12:51:07 -0700 >> > Siva Chandra <sivachandra@xxxxxxxxxxxx> wrote: >> > >> >> This property helps one turn PSR "on" and "off" via xrandr. >> >> The default value is same as that of the module param i915.enable_psr. >> >> >> >> Signed-off-by: Siva Chandra <sivachandra@xxxxxxxxxx> >> >> --- >> > >> > So are you using this in Chromium for disabling PSR in cases where it >> > doesn't work? Or to optimize power consumption when the kernel driver >> > gets it wrong? Or just for debug? >> >> We are testing a few PSR panels; Having a knob to turn PSR on and off >> would be of great convenience for manual testing and for test scripts. > > Is the module param not good enough for that? Iirc we recheck that every > time ... The only thing missing is that changing the module parameter does not actually change the psr state. So you need to change the parameter and then cause intel_edp_psr_update to happen. Jani. > -Daniel > -- > Daniel Vetter > Software Engineer, Intel Corporation > +41 (0) 79 365 57 48 - http://blog.ffwll.ch > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > http://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
