Re: [Intel-gfx] [PATCH v4 RESEND 1/4] drm/i915/psr: Clean-up intel_enable_source_psr1()

what about the approach suggested by Chris and acked by Jani? will we simply ignore? or did you discussed with them on irc? On Tue, Jul 25, 2017 at 9:48 AM, Jim Bride wrote: > On SKL+ there is a bit in SRD_CTL that software is not supposed to > modify, but we currently

[Intel-gfx] [PATCH v4 RESEND 1/4] drm/i915/psr: Clean-up intel_enable_source_psr1()

On SKL+ there is a bit in SRD_CTL that software is not supposed to modify, but we currently clobber that bit when we enable PSR. In order to preserve the value of that bit, go ahead and read SRD_CTL and do a field-wise setting of the various bits that we need to initialize before writing the