Re: [PATCH 4/7] drm/i915: Clean up intel_{pre, post}_plane_update()

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On Wed, Nov 27, 2019 at 11:25:07PM +0000, Souza, Jose wrote:
> On Wed, 2019-11-27 at 21:05 +0200, Ville Syrjala wrote:
> > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > 
> > Change the calling convention to just pass the state+crtc and
> > switch to intel_ types throughout.
> > 
> > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > ---
> >  drivers/gpu/drm/i915/display/intel_display.c | 88 +++++++++---------
> > --
> >  drivers/gpu/drm/i915/display/intel_fbc.c     | 14 ++--
> >  drivers/gpu/drm/i915/display/intel_fbc.h     |  8 +-
> >  3 files changed, 51 insertions(+), 59 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> > b/drivers/gpu/drm/i915/display/intel_display.c
> > index e341b97b7dec..72655b5b1365 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display.c
> > +++ b/drivers/gpu/drm/i915/display/intel_display.c
> > @@ -5920,13 +5920,10 @@ static void
> > intel_crtc_dpms_overlay_disable(struct intel_crtc *intel_crtc)
> >   * completely hide the primary plane.
> >   */
> >  static void
> > -intel_post_enable_primary(struct drm_crtc *crtc,
> > -			  const struct intel_crtc_state
> > *new_crtc_state)
> > +intel_post_enable_primary(struct intel_crtc *crtc)
> >  {
> > -	struct drm_device *dev = crtc->dev;
> > -	struct drm_i915_private *dev_priv = to_i915(dev);
> > -	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> > -	enum pipe pipe = intel_crtc->pipe;
> > +	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> > +	enum pipe pipe = crtc->pipe;
> >  
> >  	/*
> >  	 * Gen2 reports pipe underruns whenever all planes are
> > disabled.
> > @@ -6062,20 +6059,21 @@ static bool needs_scalerclk_wa(const struct
> > intel_crtc_state *crtc_state)
> >  	return false;
> >  }
> >  
> > -static void intel_post_plane_update(struct intel_crtc_state
> > *old_crtc_state)
> > +static void intel_post_plane_update(struct intel_atomic_state
> > *state,
> > +				    struct intel_crtc *crtc)
> >  {
> > -	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state-
> > >uapi.crtc);
> > -	struct drm_device *dev = crtc->base.dev;
> > -	struct drm_i915_private *dev_priv = to_i915(dev);
> > -	struct drm_atomic_state *state = old_crtc_state->uapi.state;
> > -	struct intel_crtc_state *new_crtc_state =
> > -		intel_atomic_get_new_crtc_state(to_intel_atomic_state(s
> > tate),
> > -						crtc);
> > -	struct drm_plane *primary = crtc->base.primary;
> > -	struct drm_plane_state *old_primary_state =
> > -		drm_atomic_get_old_plane_state(state, primary);
> > +	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
> > +	struct intel_plane *primary = to_intel_plane(crtc-
> > >base.primary);
> > +	const struct intel_crtc_state *old_crtc_state =
> > +		intel_atomic_get_old_crtc_state(state, crtc);
> > +	const struct intel_crtc_state *new_crtc_state =
> > +		intel_atomic_get_new_crtc_state(state, crtc);
> > +	const struct intel_plane_state *old_primary_state =
> > +		intel_atomic_get_old_plane_state(state, primary);
> > +	const struct intel_plane_state *new_primary_state =
> > +		intel_atomic_get_new_plane_state(state, primary);
> >  
> > -	intel_frontbuffer_flip(to_i915(crtc->base.dev), new_crtc_state-
> > >fb_bits);
> > +	intel_frontbuffer_flip(dev_priv, new_crtc_state->fb_bits);
> >  
> >  	if (new_crtc_state->update_wm_post && new_crtc_state-
> > >hw.active)
> >  		intel_update_watermarks(crtc);
> > @@ -6083,16 +6081,13 @@ static void intel_post_plane_update(struct
> > intel_crtc_state *old_crtc_state)
> >  	if (hsw_post_update_enable_ips(old_crtc_state, new_crtc_state))
> >  		hsw_enable_ips(new_crtc_state);
> >  
> > -	if (old_primary_state) {
> > -		struct drm_plane_state *new_primary_state =
> > -			drm_atomic_get_new_plane_state(state, primary);
> > -
> > +	if (new_primary_state) {
> 
> 
> This change from old_primary_state to new_primary_state is way more
> than the commit message says, the change looks right to me but maybe it
> deserves a separated patch? Same for the same change in
> intel_pre_plane_update()

I wanted to change it so I can eliminate old_primary_state in
a subsequent patch. For whatever reason that change slipped
into this patch. It's a nop change though since
!new_state == !old_state always.

> 
> >  		intel_fbc_post_update(crtc);
> >  
> > -		if (new_primary_state->visible &&
> > +		if (new_primary_state->uapi.visible &&
> >  		    (needs_modeset(new_crtc_state) ||
> > -		     !old_primary_state->visible))
> > -			intel_post_enable_primary(&crtc->base,
> > new_crtc_state);
> > +		     !old_primary_state->uapi.visible))
> > +			intel_post_enable_primary(crtc);
> >  	}
> >  
> >  	if (needs_nv12_wa(old_crtc_state) &&
> > @@ -6104,34 +6099,31 @@ static void intel_post_plane_update(struct
> > intel_crtc_state *old_crtc_state)
> >  		icl_wa_scalerclkgating(dev_priv, crtc->pipe, false);
> >  }
> >  
> > -static void intel_pre_plane_update(struct intel_crtc_state
> > *old_crtc_state,
> > -				   struct intel_crtc_state
> > *new_crtc_state)
> > +static void intel_pre_plane_update(struct intel_atomic_state *state,
> > +				   struct intel_crtc *crtc)
> >  {
> > -	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state-
> > >uapi.crtc);
> > -	struct drm_device *dev = crtc->base.dev;
> > -	struct drm_i915_private *dev_priv = to_i915(dev);
> > -	struct drm_atomic_state *state = old_crtc_state->uapi.state;
> > -	struct drm_plane *primary = crtc->base.primary;
> > -	struct drm_plane_state *old_primary_state =
> > -		drm_atomic_get_old_plane_state(state, primary);
> > +	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
> > +	struct intel_plane *primary = to_intel_plane(crtc-
> > >base.primary);
> > +	const struct intel_crtc_state *old_crtc_state =
> > +		intel_atomic_get_old_crtc_state(state, crtc);
> > +	const struct intel_crtc_state *new_crtc_state =
> > +		intel_atomic_get_new_crtc_state(state, crtc);
> > +	const struct intel_plane_state *old_primary_state =
> > +		intel_atomic_get_old_plane_state(state, primary);
> > +	const struct intel_plane_state *new_primary_state =
> > +		intel_atomic_get_new_plane_state(state, primary);
> >  	bool modeset = needs_modeset(new_crtc_state);
> > -	struct intel_atomic_state *intel_state =
> > -		to_intel_atomic_state(state);
> >  
> >  	if (hsw_pre_update_disable_ips(old_crtc_state, new_crtc_state))
> >  		hsw_disable_ips(old_crtc_state);
> >  
> > -	if (old_primary_state) {
> > -		struct intel_plane_state *new_primary_state =
> > -			intel_atomic_get_new_plane_state(intel_state,
> > -							 to_intel_plane
> > (primary));
> > -
> > +	if (new_primary_state) {
> >  		intel_fbc_pre_update(crtc, new_crtc_state,
> > new_primary_state);
> >  		/*
> >  		 * Gen2 reports pipe underruns whenever all planes are
> > disabled.
> >  		 * So disable underrun reporting before all the planes
> > get disabled.
> >  		 */
> > -		if (IS_GEN(dev_priv, 2) && old_primary_state->visible
> > &&
> > +		if (IS_GEN(dev_priv, 2) && old_primary_state-
> > >uapi.visible &&
> >  		    (modeset || !new_primary_state->uapi.visible))
> >  			intel_set_cpu_fifo_underrun_reporting(dev_priv,
> > crtc->pipe, false);
> >  	}
> > @@ -6192,7 +6184,7 @@ static void intel_pre_plane_update(struct
> > intel_crtc_state *old_crtc_state,
> >  	 * us to.
> >  	 */
> >  	if (dev_priv->display.initial_watermarks)
> > -		dev_priv->display.initial_watermarks(intel_state,
> > crtc);
> > +		dev_priv->display.initial_watermarks(state, crtc);
> >  	else if (new_crtc_state->update_wm_pre)
> >  		intel_update_watermarks(crtc);
> >  }
> > @@ -14365,7 +14357,7 @@ static void intel_update_crtc(struct
> > intel_crtc *crtc,
> >  		     new_crtc_state->update_pipe))
> >  			intel_color_load_luts(new_crtc_state);
> >  
> > -		intel_pre_plane_update(old_crtc_state, new_crtc_state);
> > +		intel_pre_plane_update(state, crtc);
> >  
> >  		if (new_crtc_state->update_pipe)
> >  			intel_encoders_update_pipe(state, crtc);
> > @@ -14460,7 +14452,7 @@ static void
> > intel_trans_port_sync_modeset_disables(struct intel_atomic_state *st
> >  		!old_slave_crtc_state);
> >  
> >  	/* Disable Slave first */
> > -	intel_pre_plane_update(old_slave_crtc_state,
> > new_slave_crtc_state);
> > +	intel_pre_plane_update(state, slave_crtc);
> >  	if (old_slave_crtc_state->hw.active)
> >  		intel_old_crtc_state_disables(state,
> >  					      old_slave_crtc_state,
> > @@ -14468,7 +14460,7 @@ static void
> > intel_trans_port_sync_modeset_disables(struct intel_atomic_state *st
> >  					      slave_crtc);
> >  
> >  	/* Disable Master */
> > -	intel_pre_plane_update(old_crtc_state, new_crtc_state);
> > +	intel_pre_plane_update(state, crtc);
> >  	if (old_crtc_state->hw.active)
> >  		intel_old_crtc_state_disables(state,
> >  					      old_crtc_state,
> > @@ -14508,7 +14500,7 @@ static void
> > intel_commit_modeset_disables(struct intel_atomic_state *state)
> >  			else
> >  				continue;
> >  		} else {
> > -			intel_pre_plane_update(old_crtc_state,
> > new_crtc_state);
> > +			intel_pre_plane_update(state, crtc);
> >  
> >  			if (old_crtc_state->hw.active)
> >  				intel_old_crtc_state_disables(state,
> > @@ -14896,7 +14888,7 @@ static void intel_atomic_commit_tail(struct
> > intel_atomic_state *state)
> >  	}
> >  
> >  	for_each_oldnew_intel_crtc_in_state(state, crtc,
> > old_crtc_state, new_crtc_state, i) {
> > -		intel_post_plane_update(old_crtc_state);
> > +		intel_post_plane_update(state, crtc);
> >  
> >  		if (put_domains[i])
> >  			modeset_put_power_domains(dev_priv,
> > put_domains[i]);
> > diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c
> > b/drivers/gpu/drm/i915/display/intel_fbc.c
> > index 92c7eb243559..70c56abe1a83 100644
> > --- a/drivers/gpu/drm/i915/display/intel_fbc.c
> > +++ b/drivers/gpu/drm/i915/display/intel_fbc.c
> > @@ -420,7 +420,7 @@ static void intel_fbc_deactivate(struct
> > drm_i915_private *dev_priv,
> >  }
> >  
> >  static bool multiple_pipes_ok(struct intel_crtc *crtc,
> > -			      struct intel_plane_state *plane_state)
> > +			      const struct intel_plane_state
> > *plane_state)
> >  {
> >  	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> >  	struct intel_fbc *fbc = &dev_priv->fbc;
> > @@ -656,8 +656,8 @@ static bool
> > intel_fbc_hw_tracking_covers_screen(struct intel_crtc *crtc)
> >  }
> >  
> >  static void intel_fbc_update_state_cache(struct intel_crtc *crtc,
> > -					 struct intel_crtc_state
> > *crtc_state,
> > -					 struct intel_plane_state
> > *plane_state)
> > +					 const struct intel_crtc_state
> > *crtc_state,
> > +					 const struct intel_plane_state
> > *plane_state)
> >  {
> >  	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> >  	struct intel_fbc *fbc = &dev_priv->fbc;
> > @@ -855,8 +855,8 @@ static void intel_fbc_get_reg_params(struct
> > intel_crtc *crtc,
> >  }
> >  
> >  void intel_fbc_pre_update(struct intel_crtc *crtc,
> > -			  struct intel_crtc_state *crtc_state,
> > -			  struct intel_plane_state *plane_state)
> > +			  const struct intel_crtc_state *crtc_state,
> > +			  const struct intel_plane_state *plane_state)
> 
> Nice
> 
> Other than the first comment, LGTM.
> 
> >  {
> >  	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> >  	struct intel_fbc *fbc = &dev_priv->fbc;
> > @@ -1081,8 +1081,8 @@ void intel_fbc_choose_crtc(struct
> > drm_i915_private *dev_priv,
> >   * intel_fbc_disable in the middle, as long as it is deactivated.
> >   */
> >  void intel_fbc_enable(struct intel_crtc *crtc,
> > -		      struct intel_crtc_state *crtc_state,
> > -		      struct intel_plane_state *plane_state)
> > +		      const struct intel_crtc_state *crtc_state,
> > +		      const struct intel_plane_state *plane_state)
> >  {
> >  	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> >  	struct intel_fbc *fbc = &dev_priv->fbc;
> > diff --git a/drivers/gpu/drm/i915/display/intel_fbc.h
> > b/drivers/gpu/drm/i915/display/intel_fbc.h
> > index 50272eda8d43..f58b0b1e3c5c 100644
> > --- a/drivers/gpu/drm/i915/display/intel_fbc.h
> > +++ b/drivers/gpu/drm/i915/display/intel_fbc.h
> > @@ -20,14 +20,14 @@ void intel_fbc_choose_crtc(struct
> > drm_i915_private *dev_priv,
> >  			   struct intel_atomic_state *state);
> >  bool intel_fbc_is_active(struct drm_i915_private *dev_priv);
> >  void intel_fbc_pre_update(struct intel_crtc *crtc,
> > -			  struct intel_crtc_state *crtc_state,
> > -			  struct intel_plane_state *plane_state);
> > +			  const struct intel_crtc_state *crtc_state,
> > +			  const struct intel_plane_state *plane_state);
> >  void intel_fbc_post_update(struct intel_crtc *crtc);
> >  void intel_fbc_init(struct drm_i915_private *dev_priv);
> >  void intel_fbc_init_pipe_state(struct drm_i915_private *dev_priv);
> >  void intel_fbc_enable(struct intel_crtc *crtc,
> > -		      struct intel_crtc_state *crtc_state,
> > -		      struct intel_plane_state *plane_state);
> > +		      const struct intel_crtc_state *crtc_state,
> > +		      const struct intel_plane_state *plane_state);
> >  void intel_fbc_disable(struct intel_crtc *crtc);
> >  void intel_fbc_global_disable(struct drm_i915_private *dev_priv);
> >  void intel_fbc_invalidate(struct drm_i915_private *dev_priv,

-- 
Ville Syrjälä
Intel
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