On Fri, 2019-08-16 at 14:28 -0700, Lucas De Marchi wrote:
> On Fri, Aug 16, 2019 at 1:05 AM Lucas De Marchi
> <lucas.demarchi@xxxxxxxxx> wrote:
> > From: José Roberto de Souza <jose.souza@xxxxxxxxx>
> >
> > Tiger Lake has eDP-capable transcoders rather than a transcoder
> > dedicated to eDP. Transcoder A is the one where we have PSR2.
> > Actually transcoder B also supports PSR2 but only with software
> > tracking that is not implemented.
> >
> > Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
> > Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> > Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
> > Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/display/intel_psr.c | 11 +++++++++--
> > 1 file changed, 9 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
> > b/drivers/gpu/drm/i915/display/intel_psr.c
> > index 01070eb67571..1d36d7be015d 100644
> > --- a/drivers/gpu/drm/i915/display/intel_psr.c
> > +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> > @@ -511,12 +511,19 @@ static bool intel_psr2_config_valid(struct
> > intel_dp *intel_dp,
> > int crtc_hdisplay = crtc_state-
> > >base.adjusted_mode.crtc_hdisplay;
> > int crtc_vdisplay = crtc_state-
> > >base.adjusted_mode.crtc_vdisplay;
> > int psr_max_h = 0, psr_max_v = 0;
> > + enum transcoder supported;
> >
> > if (!dev_priv->psr.sink_psr2_support)
> > return false;
> >
> > - if (crtc_state->cpu_transcoder != TRANSCODER_EDP) {
> > - DRM_DEBUG_KMS("PSR2 is only supported in EDP
> > transcoder\n");
> > + /*
> > + * TODO: PSR2 is also supported in TRANSCODER_B on TGL+ but
> > it requires
> > + * software tracking
> > + */
>
> where is this coming from? spec 49180 says: "Only transcoder A
> supports PSR2."
BSpec: 49274
Selective Update on second eDP
But or I misread or the platforms changed, TGL do not support PSR2 on
transcoder B even using manual tracking.
>
> Could this patch be squashed in "drm/i915: Add transcoder restriction
> to PSR2" so we just add the restriction
> for any platform at the same time?
Yes it now can be squashed, it was not before because I was trying to
upstream "drm/i915: Add transcoder restriction to PSR2" before TGL was
public.
I will fix both
Thanks
>
> Lucas De Marchi
>
> > + supported = INTEL_GEN(dev_priv) >= 12 ? TRANSCODER_A :
> > TRANSCODER_EDP;
> > + if (crtc_state->cpu_transcoder != supported) {
> > + DRM_DEBUG_KMS("PSR2 not supported in transcoder
> > %s\n",
> > + transcoder_name(supported));
> > return false;
> > }
> >
> > --
> > 2.21.0
> >
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
>
>
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