Re: [Intel-gfx] [PATCH v2 12/17] drm/i915: Fix dg1 buf trans tables

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

On Tue, 08 Jun 2021, Ville Syrjala <ville.syrjala@linux.intel.com> wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
>
> For some reason the dg1 buf trans tables have been stuffed into
> icl_get_combo_buf_trans_edp() which doesn't even get called
> on dg1. Split them out into a proper dg1 specific function,
> and also make sure we use the proper buf trans tables for
> DP as well as eDP.
>
> v2: Add the hobl stuff
>
> Reviewed-by: Jani Nikula <jani.nikula@intel.com>

Holds for v2.

> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> ---
>  .../drm/i915/display/intel_ddi_buf_trans.c    | 55 +++++++++++++++++--
>  1 file changed, 49 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
> index fcb67deb46dd..52bc6cbe36cf 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
> @@ -1325,12 +1325,6 @@ icl_get_combo_buf_trans_edp(struct intel_encoder *encoder,
>  	} else if (dev_priv->vbt.edp.low_vswing) {
>  		return intel_get_buf_trans(&icl_combo_phy_ddi_translations_edp_hbr2,
>  					   n_entries);
> -	} else if (IS_DG1(dev_priv) && crtc_state->port_clock > 270000) {
> -		return intel_get_buf_trans(&dg1_combo_phy_ddi_translations_dp_hbr2_hbr3,
> -					   n_entries);
> -	} else if (IS_DG1(dev_priv)) {
> -		return intel_get_buf_trans(&dg1_combo_phy_ddi_translations_dp_rbr_hbr,
> -					   n_entries);
>  	}
>  
>  	return icl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
> @@ -1545,6 +1539,53 @@ tgl_get_combo_buf_trans(struct intel_encoder *encoder,
>  		return tgl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
>  }
>  
> +static const struct intel_ddi_buf_trans *
> +dg1_get_combo_buf_trans_dp(struct intel_encoder *encoder,
> +			   const struct intel_crtc_state *crtc_state,
> +			   int *n_entries)
> +{
> +	if (crtc_state->port_clock > 270000)
> +		return intel_get_buf_trans(&dg1_combo_phy_ddi_translations_dp_hbr2_hbr3,
> +					   n_entries);
> +	else
> +		return intel_get_buf_trans(&dg1_combo_phy_ddi_translations_dp_rbr_hbr,
> +					   n_entries);
> +}
> +
> +static const struct intel_ddi_buf_trans *
> +dg1_get_combo_buf_trans_edp(struct intel_encoder *encoder,
> +			    const struct intel_crtc_state *crtc_state,
> +			    int *n_entries)
> +{
> +	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> +	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
> +
> +	if (crtc_state->port_clock > 540000)
> +		return intel_get_buf_trans(&icl_combo_phy_ddi_translations_edp_hbr3,
> +					   n_entries);
> +	else if (dev_priv->vbt.edp.hobl && !intel_dp->hobl_failed)
> +		return intel_get_buf_trans(&tgl_combo_phy_ddi_translations_edp_hbr2_hobl,
> +					   n_entries);
> +	else if (dev_priv->vbt.edp.low_vswing)
> +		return intel_get_buf_trans(&icl_combo_phy_ddi_translations_edp_hbr2,
> +					   n_entries);
> +	else
> +		return dg1_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
> +}
> +
> +static const struct intel_ddi_buf_trans *
> +dg1_get_combo_buf_trans(struct intel_encoder *encoder,
> +			const struct intel_crtc_state *crtc_state,
> +			int *n_entries)
> +{
> +	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
> +		return icl_get_combo_buf_trans_hdmi(encoder, crtc_state, n_entries);
> +	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
> +		return dg1_get_combo_buf_trans_edp(encoder, crtc_state, n_entries);
> +	else
> +		return dg1_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
> +}
> +
>  static const struct intel_ddi_buf_trans *
>  rkl_get_combo_buf_trans_dp(struct intel_encoder *encoder,
>  			   const struct intel_crtc_state *crtc_state,
> @@ -1682,6 +1723,8 @@ void intel_ddi_buf_trans_init(struct intel_encoder *encoder)
>  			encoder->get_buf_trans = adlp_get_dkl_buf_trans;
>  	} else if (IS_ROCKETLAKE(i915)) {
>  		encoder->get_buf_trans = rkl_get_combo_buf_trans;
> +	} else if (IS_DG1(i915)) {
> +		encoder->get_buf_trans = dg1_get_combo_buf_trans;
>  	} else if (DISPLAY_VER(i915) >= 12) {
>  		if (intel_phy_is_combo(i915, phy))
>  			encoder->get_buf_trans = tgl_get_combo_buf_trans;

-- 
Jani Nikula, Intel Open Source Graphics Center
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