On Wed, Nov 28, 2018 at 12:13:30PM -0800, Souza, Jose wrote:
> On Wed, 2018-11-28 at 11:02 -0800, Rodrigo Vivi wrote:
> > On Mon, Nov 26, 2018 at 04:37:03PM -0800, José Roberto de Souza
> > wrote:
> > > For PSR2 there is no register to tell HW to keep main link enabled
> > > while PSR2 is active, so don't configure sink DPCD with a
> > > misleading value.
> > >
> > > Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
> > > Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> > > Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
> > > ---
> > > drivers/gpu/drm/i915/intel_psr.c | 10 ++++++----
> > > 1 file changed, 6 insertions(+), 4 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/i915/intel_psr.c
> > > b/drivers/gpu/drm/i915/intel_psr.c
> > > index f5d27a02eb28..888e348cc1b4 100644
> > > --- a/drivers/gpu/drm/i915/intel_psr.c
> > > +++ b/drivers/gpu/drm/i915/intel_psr.c
> > > @@ -391,12 +391,14 @@ static void intel_psr_enable_sink(struct
> > > intel_dp *intel_dp)
> > > drm_dp_dpcd_writeb(&intel_dp->aux,
> > > DP_RECEIVER_ALPM_CONFIG,
> > > DP_ALPM_ENABLE);
> > > dpcd_val |= DP_PSR_ENABLE_PSR2;
> > > + } else {
> > > + if (dev_priv->psr.link_standby)
> > > + dpcd_val |= DP_PSR_MAIN_LINK_ACTIVE;
> > > +
> > > + if (INTEL_GEN(dev_priv) >= 8)
> > > + dpcd_val |= DP_PSR_CRC_VERIFICATION;
> >
> > commit message only mention the link stand-by...
> > could you please do this in a separated patch?
>
> We were already doing it for PSR1, I just grouped all the PSR1 checks
> inside of this else block, so there is no functional change in CRC
> verification but I can move it to a separated patch if you want.
I prefer the separated patch to make things clear.
The other option would be change the commit message and
subject to mention this clean-up here.
but up to you.
>
>
> >
> > > }
> > >
> > > - if (dev_priv->psr.link_standby)
> > > - dpcd_val |= DP_PSR_MAIN_LINK_ACTIVE;
> > > - if (!dev_priv->psr.psr2_enabled && INTEL_GEN(dev_priv) >= 8)
> > > - dpcd_val |= DP_PSR_CRC_VERIFICATION;
> > > drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, dpcd_val);
> > >
> > > drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER,
> > > DP_SET_POWER_D0);
> > > --
> > > 2.19.2
> > >
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