Re: [PATCH 1/7] drm/i915: Move intel_ddi_get_crtc_new_encoder() out from ddi code

[Jani Nikula <jani.nikula@linux.intel.com>]

On Fri, 18 May 2018, Ville Syrjala <ville.syrjala@linux.intel.com> wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
>
> The ddi code no longer uses intel_ddi_get_crtc_new_encoder(). Move it
> elsewhere where we have some users left.
>
> Reviewed-by: Jani Nikula <jani.nikula@intel.com>

Yup.

> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> ---
>  drivers/gpu/drm/i915/intel_ddi.c     | 29 -----------------------------
>  drivers/gpu/drm/i915/intel_display.c | 31 ++++++++++++++++++++++++++++++-
>  drivers/gpu/drm/i915/intel_drv.h     |  2 --
>  3 files changed, 30 insertions(+), 32 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
> index 1665bc588241..3b8f12883ca7 100644
> --- a/drivers/gpu/drm/i915/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/intel_ddi.c
> @@ -1243,35 +1243,6 @@ intel_ddi_get_crtc_encoder(struct intel_crtc *crtc)
>  	return ret;
>  }
>  
> -/* Finds the only possible encoder associated with the given CRTC. */
> -struct intel_encoder *
> -intel_ddi_get_crtc_new_encoder(struct intel_crtc_state *crtc_state)
> -{
> -	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
> -	struct intel_encoder *ret = NULL;
> -	struct drm_atomic_state *state;
> -	struct drm_connector *connector;
> -	struct drm_connector_state *connector_state;
> -	int num_encoders = 0;
> -	int i;
> -
> -	state = crtc_state->base.state;
> -
> -	for_each_new_connector_in_state(state, connector, connector_state, i) {
> -		if (connector_state->crtc != crtc_state->base.crtc)
> -			continue;
> -
> -		ret = to_intel_encoder(connector_state->best_encoder);
> -		num_encoders++;
> -	}
> -
> -	WARN(num_encoders != 1, "%d encoders on crtc for pipe %c\n", num_encoders,
> -	     pipe_name(crtc->pipe));
> -
> -	BUG_ON(ret == NULL);
> -	return ret;
> -}
> -
>  #define LC_FREQ 2700
>  
>  static int hsw_ddi_calc_wrpll_link(struct drm_i915_private *dev_priv,
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index c9ec88acad9c..bc13d3ec779b 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -4589,6 +4589,35 @@ static void ivybridge_update_fdi_bc_bifurcation(struct intel_crtc *intel_crtc)
>  	}
>  }
>  
> +/*
> + * Finds the encoder associated with the given CRTC. This can only be
> + * used when we know that the CRTC isn't feeding multiple encoders!
> + */
> +static struct intel_encoder *
> +intel_get_crtc_new_encoder(const struct intel_crtc_state *crtc_state)
> +{
> +	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
> +	const struct drm_atomic_state *state = crtc_state->base.state;
> +	const struct drm_connector_state *connector_state;
> +	const struct drm_connector *connector;
> +	struct intel_encoder *encoder = NULL;
> +	int num_encoders = 0;
> +	int i;
> +
> +	for_each_new_connector_in_state(state, connector, connector_state, i) {
> +		if (connector_state->crtc != &crtc->base)
> +			continue;
> +
> +		encoder = to_intel_encoder(connector_state->best_encoder);
> +		num_encoders++;
> +	}
> +
> +	WARN(num_encoders != 1, "%d encoders for pipe %c\n",
> +	     num_encoders, pipe_name(crtc->pipe));
> +
> +	return encoder;
> +}
> +
>  /* Return which DP Port should be selected for Transcoder DP control */
>  static enum port
>  intel_trans_dp_port_sel(struct intel_crtc *crtc)
> @@ -9102,7 +9131,7 @@ static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
>  {
>  	if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI)) {
>  		struct intel_encoder *encoder =
> -			intel_ddi_get_crtc_new_encoder(crtc_state);
> +			intel_get_crtc_new_encoder(crtc_state);
>  
>  		if (!intel_get_shared_dpll(crtc, crtc_state, encoder)) {
>  			DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 22af249393a4..a827a2245c18 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1395,8 +1395,6 @@ void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
>  				       enum transcoder cpu_transcoder);
>  void intel_ddi_enable_pipe_clock(const struct intel_crtc_state *crtc_state);
>  void intel_ddi_disable_pipe_clock(const  struct intel_crtc_state *crtc_state);
> -struct intel_encoder *
> -intel_ddi_get_crtc_new_encoder(struct intel_crtc_state *crtc_state);
>  void intel_ddi_set_pipe_settings(const struct intel_crtc_state *crtc_state);
>  void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp);
>  bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);

-- 
Jani Nikula, Intel Open Source Graphics Center
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