[PATCH v13 2/3] drm/i915/vrr: Split vrr-compute-config in two phases

[Golani, Mitulkumar Ajitkumar]

> -----Original Message-----
> From: Cavitt, Jonathan <jonathan.cavitt at intel.com>
> Sent: Tuesday, October 1, 2024 7:40 PM
> To: Golani, Mitulkumar Ajitkumar <mitulkumar.ajitkumar.golani at intel.com>;
> intel-gfx at lists.freedesktop.org
> Cc: Nikula, Jani <jani.nikula at intel.com>; Syrjala, Ville <ville.syrjala at intel.com>;
> Nautiyal, Ankit K <ankit.k.nautiyal at intel.com>; Shankar, Uma
> <uma.shankar at intel.com>; Cavitt, Jonathan <jonathan.cavitt at intel.com>
> Subject: RE: [PATCH v13 2/3] drm/i915/vrr: Split vrr-compute-config in two
> phases
> 
> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces at lists.freedesktop.org> On Behalf Of Mitul
> Golani
> Sent: Tuesday, October 1, 2024 6:47 AM
> To: intel-gfx at lists.freedesktop.org
> Cc: Nikula, Jani <jani.nikula at intel.com>; Syrjala, Ville <ville.syrjala at intel.com>;
> Nautiyal, Ankit K <ankit.k.nautiyal at intel.com>; Shankar, Uma
> <uma.shankar at intel.com>
> Subject: [PATCH v13 2/3] drm/i915/vrr: Split vrr-compute-config in two phases
> >
> > From: Animesh Manna <animesh.manna at intel.com>
> >
> > As vrr guardband calculation is dependent on modified vblank start so
> > better to compute late after all vblank adjustement.
> >
> > v1: Initial version.
> > v2: Split in a separate patch from panel-replay workaround. [Ankit]
> > v3: Add a function for late vrr related computation. [Ville]
> > v4: Use flipline instead of vrr.enable and some cosmetic changes.
> > [Ville]
> > v5: Use intel_vrr_possible helper.
> >
> > Signed-off-by: Animesh Manna <animesh.manna at intel.com>
> > Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani at intel.com>
> > ---
> >  drivers/gpu/drm/i915/display/intel_display.c |  2 ++
> >  drivers/gpu/drm/i915/display/intel_vrr.c     | 13 +++++++++----
> >  drivers/gpu/drm/i915/display/intel_vrr.h     |  1 +
> >  3 files changed, 12 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> > b/drivers/gpu/drm/i915/display/intel_display.c
> > index f7667931f9d9..c59d7bffbf57 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display.c
> > +++ b/drivers/gpu/drm/i915/display/intel_display.c
> > @@ -4836,6 +4836,8 @@ intel_modeset_pipe_config_late(struct
> intel_atomic_state *state,
> >  	struct drm_connector *connector;
> >  	int i;
> >
> > +	intel_vrr_compute_config_late(crtc_state);
> > +
> >  	for_each_new_connector_in_state(&state->base, connector,
> >  					conn_state, i) {
> >  		struct intel_encoder *encoder =
> > diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c
> > b/drivers/gpu/drm/i915/display/intel_vrr.c
> > index 79db30e31324..734db543b90c 100644
> > --- a/drivers/gpu/drm/i915/display/intel_vrr.c
> > +++ b/drivers/gpu/drm/i915/display/intel_vrr.c
> > @@ -244,11 +244,16 @@ intel_vrr_compute_config(struct intel_crtc_state
> *crtc_state,
> >  			(crtc_state->hw.adjusted_mode.crtc_vtotal -
> >  			 crtc_state->hw.adjusted_mode.vsync_end);
> >  	}
> > +}
> > +
> > +void intel_vrr_compute_config_late(struct intel_crtc_state
> > +*crtc_state) {
> > +	struct intel_display *display = to_intel_display(crtc_state);
> > +	struct drm_display_mode *adjusted_mode =
> > +&crtc_state->hw.adjusted_mode;
> > +
> > +	if (!intel_vrr_possible(crtc_state))
> > +		return;
> >
> > -	/*
> > -	 * For XE_LPD+, we use guardband and pipeline override
> > -	 * is deprecated.
> > -	 */
> 
> Not sure why this comment is being deleted, but I won't block on it.
> Reviewed-by: Jonathan Cavitt <jonathan.cavitt at intel.com> -Jonathan Cavitt

Thanks @Cavitt, Jonathan for the review,

Comment was deleted as suggested by ville in revision 2 for this series. Also that is coming
As redundant to when first time we calculated guardband. 

> 
> >  	if (DISPLAY_VER(display) >= 13) {
> >  		crtc_state->vrr.guardband =
> >  			crtc_state->vrr.vmin + 1 - adjusted_mode-
> >crtc_vblank_start; diff
> > --git a/drivers/gpu/drm/i915/display/intel_vrr.h
> > b/drivers/gpu/drm/i915/display/intel_vrr.h
> > index af921dda4619..b3b45c675020 100644
> > --- a/drivers/gpu/drm/i915/display/intel_vrr.h
> > +++ b/drivers/gpu/drm/i915/display/intel_vrr.h
> > @@ -19,6 +19,7 @@ bool intel_vrr_possible(const struct
> > intel_crtc_state *crtc_state);  void intel_vrr_check_modeset(struct
> > intel_atomic_state *state);  void intel_vrr_compute_config(struct
> intel_crtc_state *crtc_state,
> >  			      struct drm_connector_state *conn_state);
> > +void intel_vrr_compute_config_late(struct intel_crtc_state
> > +*crtc_state);
> >  void intel_vrr_set_transcoder_timings(const struct intel_crtc_state
> > *crtc_state);  void intel_vrr_enable(const struct intel_crtc_state
> > *crtc_state);  void intel_vrr_send_push(const struct intel_crtc_state
> > *crtc_state);
> > --
> > 2.46.0
> >
> >