Re: [v2] drm/i915/dsc: Fix bigjoiner check in dsc_disable

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> -----Original Message-----
> From: Navare, Manasi D <manasi.d.navare@xxxxxxxxx>
> Sent: Tuesday, June 8, 2021 2:01 AM
> To: Kulkarni, Vandita <vandita.kulkarni@xxxxxxxxx>
> Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; Nikula, Jani <jani.nikula@xxxxxxxxx>;
> Manna, Animesh <animesh.manna@xxxxxxxxx>
> Subject: Re: [v2] drm/i915/dsc: Fix bigjoiner check in dsc_disable
> 
> On Mon, Jun 07, 2021 at 04:23:42PM +0530, Vandita Kulkarni wrote:
> > This change takes care of resetting the dss_ctl registers in case of
> > dsc_disable, bigjoiner disable and also uncompressed joiner disable.
> >
> > v2: Fix formatting
> >
> > Suggested-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> > Fixes: d961eb20adb6 (drm/i915/bigjoiner: atomic commit changes for
> > uncompressed joiner)
> > Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/3537
> > Signed-off-by: Vandita Kulkarni <vandita.kulkarni@xxxxxxxxx>
> > ---
> >  drivers/gpu/drm/i915/display/intel_vdsc.c | 12 ++++++------
> >  1 file changed, 6 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c
> > b/drivers/gpu/drm/i915/display/intel_vdsc.c
> > index 19cd9531c115..b9828852a68f 100644
> > --- a/drivers/gpu/drm/i915/display/intel_vdsc.c
> > +++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
> > @@ -1161,12 +1161,12 @@ void intel_dsc_disable(const struct
> intel_crtc_state *old_crtc_state)
> >  	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
> >  	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> >
> > -	if (!(old_crtc_state->dsc.compression_enable &&
> > -	      old_crtc_state->bigjoiner))
> > -		return;
> > -
> > -	intel_de_write(dev_priv, dss_ctl1_reg(old_crtc_state), 0);
> > -	intel_de_write(dev_priv, dss_ctl2_reg(old_crtc_state), 0);
> > +	/* Disable only if either of them is enabled */
> > +	if (old_crtc_state->dsc.compression_enable ||
> > +	    old_crtc_state->dsc.compression_enable) {
> 
> Vandita I think you have a copy paste error  the second condition should be
> old_crtc_state->bigjoiner ?
Sorry.
Will fix it.

Thanks,
Vandita
> 
> Manasi
> 
> > +		intel_de_write(dev_priv, dss_ctl1_reg(old_crtc_state), 0);
> > +		intel_de_write(dev_priv, dss_ctl2_reg(old_crtc_state), 0);
> > +	}
> >  }
> >
> >  void intel_uncompressed_joiner_get_config(struct intel_crtc_state
> > *crtc_state)
> > --
> > 2.21.0.5.gaeb582a
> >
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