[PATCH v4 2/5] drm/i915/vrr: Update vrr.vsync_{start, end} computation

[Golani, Mitulkumar Ajitkumar]

> -----Original Message-----
> From: Nautiyal, Ankit K <ankit.k.nautiyal at intel.com>
> Sent: 20 November 2024 18:26
> To: Golani, Mitulkumar Ajitkumar <mitulkumar.ajitkumar.golani at intel.com>;
> intel-gfx at lists.freedesktop.org
> Cc: ville.syrjala at linux.intel.com; Nikula, Jani <jani.nikula at intel.com>
> Subject: Re: [PATCH v4 2/5] drm/i915/vrr: Update vrr.vsync_{start, end}
> computation
> 
> 
> On 11/20/2024 2:19 PM, Mitul Golani wrote:
> > vrr.vsync_{start,end} computation should not depend on
> > crtc_state->vrr.enable. Also add them to state dump.
> 
> Need to update the commit message.
> 
> Also need to send to intel-xe at lists.freedesktop.org.


Right, I missed adding intel-xe at lists.freedesktop.org. I will add in next revision update. 

Regards,
Mitul
> 
> Regards,
> 
> Ankit
> 
> >
> > --v1:
> >   - Explain commit message more clearly [Jani]
> >   - Instead of tweaking to fastset use vrr.flipline while computing AS_SDP.
> > --v2:
> >   - Correct computation of vrr.vsync_start/end should not depend on
> >     vrr.enable.[ville]
> >   - vrr enable disable requirement should not obstruct by SDP enable
> >     disable requirements. [Ville]
> > --v3:
> >   - Create separate patch for crtc_state_dump [Ankit].
> >
> > Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani at intel.com>
> > ---
> >   drivers/gpu/drm/i915/display/intel_vrr.c | 25 ++++++++++--------------
> >   1 file changed, 10 insertions(+), 15 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c
> > b/drivers/gpu/drm/i915/display/intel_vrr.c
> > index b386e62d1664..c395af419ce3 100644
> > --- a/drivers/gpu/drm/i915/display/intel_vrr.c
> > +++ b/drivers/gpu/drm/i915/display/intel_vrr.c
> > @@ -236,7 +236,7 @@ intel_vrr_compute_config(struct intel_crtc_state
> *crtc_state,
> >   		crtc_state->mode_flags |= I915_MODE_FLAG_VRR;
> >   	}
> >
> > -	if (intel_dp->as_sdp_supported && crtc_state->vrr.enable) {
> > +	if (HAS_AS_SDP(display)) {
> >   		crtc_state->vrr.vsync_start =
> >   			(crtc_state->hw.adjusted_mode.crtc_vtotal -
> >   			 crtc_state->hw.adjusted_mode.vsync_start);
> > @@ -316,6 +316,12 @@ void intel_vrr_set_transcoder_timings(const struct
> intel_crtc_state *crtc_state)
> >   		       trans_vrr_ctl(crtc_state));
> >   	intel_de_write(display, TRANS_VRR_FLIPLINE(display,
> cpu_transcoder),
> >   		       crtc_state->vrr.flipline - 1);
> > +
> > +	if (HAS_AS_SDP(display))
> > +		intel_de_write(display,
> > +			       TRANS_VRR_VSYNC(display, cpu_transcoder),
> > +			       VRR_VSYNC_END(crtc_state->vrr.vsync_end) |
> > +			       VRR_VSYNC_START(crtc_state->vrr.vsync_start));
> >   }
> >
> >   void intel_vrr_send_push(const struct intel_crtc_state *crtc_state)
> > @@ -352,12 +358,6 @@ void intel_vrr_enable(const struct intel_crtc_state
> *crtc_state)
> >   	intel_de_write(display, TRANS_PUSH(display, cpu_transcoder),
> >   		       TRANS_PUSH_EN);
> >
> > -	if (HAS_AS_SDP(display))
> > -		intel_de_write(display,
> > -			       TRANS_VRR_VSYNC(display, cpu_transcoder),
> > -			       VRR_VSYNC_END(crtc_state->vrr.vsync_end) |
> > -			       VRR_VSYNC_START(crtc_state->vrr.vsync_start));
> > -
> >   	if (crtc_state->cmrr.enable) {
> >   		intel_de_write(display, TRANS_VRR_CTL(display,
> cpu_transcoder),
> >   			       VRR_CTL_VRR_ENABLE |
> VRR_CTL_CMRR_ENABLE | @@ -382,10
> > +382,6 @@ void intel_vrr_disable(const struct intel_crtc_state
> *old_crtc_state)
> >   				TRANS_VRR_STATUS(display,
> cpu_transcoder),
> >   				VRR_STATUS_VRR_EN_LIVE, 1000);
> >   	intel_de_write(display, TRANS_PUSH(display, cpu_transcoder), 0);
> > -
> > -	if (HAS_AS_SDP(display))
> > -		intel_de_write(display,
> > -			       TRANS_VRR_VSYNC(display, cpu_transcoder), 0);
> >   }
> >
> >   void intel_vrr_get_config(struct intel_crtc_state *crtc_state) @@
> > -425,10 +421,6 @@ void intel_vrr_get_config(struct intel_crtc_state
> *crtc_state)
> >
> TRANS_VRR_VMAX(display, cpu_transcoder)) + 1;
> >   		crtc_state->vrr.vmin = intel_de_read(display,
> >   						     TRANS_VRR_VMIN(display,
> cpu_transcoder)) + 1;
> > -	}
> > -
> > -	if (crtc_state->vrr.enable) {
> > -		crtc_state->mode_flags |= I915_MODE_FLAG_VRR;
> >
> >   		if (HAS_AS_SDP(display)) {
> >   			trans_vrr_vsync =
> > @@ -440,4 +432,7 @@ void intel_vrr_get_config(struct intel_crtc_state
> *crtc_state)
> >   				REG_FIELD_GET(VRR_VSYNC_END_MASK,
> trans_vrr_vsync);
> >   		}
> >   	}
> > +
> > +	if (crtc_state->vrr.enable)
> > +		crtc_state->mode_flags |= I915_MODE_FLAG_VRR;
> >   }