Re: [Intel-gfx] [PATCH v5 2/7] drm/i915/display: Share intel_connector_needs_modeset()

["Ville Syrjälä" <ville.syrjala@linux.intel.com>]

On Fri, Dec 20, 2019 at 07:29:49AM -0800, José Roberto de Souza wrote:
> intel_connector_needs_modeset() will be used outside of
> intel_display.c in a future patch so it would only be necessary to
> remove the state and add the prototype to the header file.
> 
> But while at it, I simplified the arguments and moved it to a better
> place intel_atomic.c.
> 
> No behavior changes intended here.
> 
> v3:
> - removed digital from exported version of intel_connector_needs_modeset
> - rollback connector to drm type
> 
> v4:
> - Renamed new_connector_state to new_conn_state
> - Going back to drm_connector_state in
> intel_encoders_update_prepare/complete as we also have
> intel_tv_connector_state
> 
> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Cc: Lucas De Marchi <lucas.demarchi@intel.com>
> Signed-off-by: José Roberto de Souza <jose.souza@intel.com>

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

> ---
>  drivers/gpu/drm/i915/display/intel_atomic.c  | 18 ++++++++
>  drivers/gpu/drm/i915/display/intel_atomic.h  |  2 +
>  drivers/gpu/drm/i915/display/intel_display.c | 45 ++++++--------------
>  3 files changed, 34 insertions(+), 31 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c b/drivers/gpu/drm/i915/display/intel_atomic.c
> index fd0026fc3618..b7dda18b6f29 100644
> --- a/drivers/gpu/drm/i915/display/intel_atomic.c
> +++ b/drivers/gpu/drm/i915/display/intel_atomic.c
> @@ -174,6 +174,24 @@ intel_digital_connector_duplicate_state(struct drm_connector *connector)
>  	return &state->base;
>  }
>  
> +/**
> + * intel_connector_needs_modeset - check if connector needs a modeset
> + */
> +bool
> +intel_connector_needs_modeset(struct intel_atomic_state *state,
> +			      struct drm_connector *connector)
> +{
> +	const struct drm_connector_state *old_conn_state, *new_conn_state;
> +
> +	old_conn_state = drm_atomic_get_old_connector_state(&state->base, connector);
> +	new_conn_state = drm_atomic_get_new_connector_state(&state->base, connector);
> +
> +	return old_conn_state->crtc != new_conn_state->crtc ||
> +	       (new_conn_state->crtc &&
> +		drm_atomic_crtc_needs_modeset(drm_atomic_get_new_crtc_state(&state->base,
> +									    new_conn_state->crtc)));
> +}
> +
>  /**
>   * intel_crtc_duplicate_state - duplicate crtc state
>   * @crtc: drm crtc
> diff --git a/drivers/gpu/drm/i915/display/intel_atomic.h b/drivers/gpu/drm/i915/display/intel_atomic.h
> index 7b49623419ba..a7d1a8576c48 100644
> --- a/drivers/gpu/drm/i915/display/intel_atomic.h
> +++ b/drivers/gpu/drm/i915/display/intel_atomic.h
> @@ -32,6 +32,8 @@ int intel_digital_connector_atomic_check(struct drm_connector *conn,
>  					 struct drm_atomic_state *state);
>  struct drm_connector_state *
>  intel_digital_connector_duplicate_state(struct drm_connector *connector);
> +bool intel_connector_needs_modeset(struct intel_atomic_state *state,
> +				   struct drm_connector *connector);
>  
>  struct drm_crtc_state *intel_crtc_duplicate_state(struct drm_crtc *crtc);
>  void intel_crtc_destroy_state(struct drm_crtc *crtc,
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 0ef950203d88..fc77829ea958 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -6166,39 +6166,23 @@ intel_connector_primary_encoder(struct intel_connector *connector)
>  	return encoder;
>  }
>  
> -static bool
> -intel_connector_needs_modeset(struct intel_atomic_state *state,
> -			      const struct drm_connector_state *old_conn_state,
> -			      const struct drm_connector_state *new_conn_state)
> -{
> -	struct intel_crtc *old_crtc = old_conn_state->crtc ?
> -				      to_intel_crtc(old_conn_state->crtc) : NULL;
> -	struct intel_crtc *new_crtc = new_conn_state->crtc ?
> -				      to_intel_crtc(new_conn_state->crtc) : NULL;
> -
> -	return new_crtc != old_crtc ||
> -	       (new_crtc &&
> -		needs_modeset(intel_atomic_get_new_crtc_state(state, new_crtc)));
> -}
> -
>  static void intel_encoders_update_prepare(struct intel_atomic_state *state)
>  {
> -	struct drm_connector_state *old_conn_state;
>  	struct drm_connector_state *new_conn_state;
> -	struct drm_connector *conn;
> +	struct drm_connector *connector;
>  	int i;
>  
> -	for_each_oldnew_connector_in_state(&state->base, conn,
> -					   old_conn_state, new_conn_state, i) {
> +	for_each_new_connector_in_state(&state->base, connector, new_conn_state,
> +					i) {
> +		struct intel_connector *intel_connector;
>  		struct intel_encoder *encoder;
>  		struct intel_crtc *crtc;
>  
> -		if (!intel_connector_needs_modeset(state,
> -						   old_conn_state,
> -						   new_conn_state))
> +		if (!intel_connector_needs_modeset(state, connector))
>  			continue;
>  
> -		encoder = intel_connector_primary_encoder(to_intel_connector(conn));
> +		intel_connector = to_intel_connector(connector);
> +		encoder = intel_connector_primary_encoder(intel_connector);
>  		if (!encoder->update_prepare)
>  			continue;
>  
> @@ -6210,22 +6194,21 @@ static void intel_encoders_update_prepare(struct intel_atomic_state *state)
>  
>  static void intel_encoders_update_complete(struct intel_atomic_state *state)
>  {
> -	struct drm_connector_state *old_conn_state;
>  	struct drm_connector_state *new_conn_state;
> -	struct drm_connector *conn;
> +	struct drm_connector *connector;
>  	int i;
>  
> -	for_each_oldnew_connector_in_state(&state->base, conn,
> -					   old_conn_state, new_conn_state, i) {
> +	for_each_new_connector_in_state(&state->base, connector, new_conn_state,
> +					i) {
> +		struct intel_connector *intel_connector;
>  		struct intel_encoder *encoder;
>  		struct intel_crtc *crtc;
>  
> -		if (!intel_connector_needs_modeset(state,
> -						   old_conn_state,
> -						   new_conn_state))
> +		if (!intel_connector_needs_modeset(state, connector))
>  			continue;
>  
> -		encoder = intel_connector_primary_encoder(to_intel_connector(conn));
> +		intel_connector = to_intel_connector(connector);
> +		encoder = intel_connector_primary_encoder(intel_connector);
>  		if (!encoder->update_complete)
>  			continue;
>  
> -- 
> 2.24.1

-- 
Ville Syrjälä
Intel
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