[Intel-gfx] [PATCH 2/9] drm/i915/bios: add intel_bios_hdmi_level_shift()

[Ville Syrjälä]

On Fri, Jan 17, 2020 at 04:29:22PM +0200, Jani Nikula wrote:
> Don't access i915->vbt.ddi_port_info[] directly.
> 
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>

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

> ---
>  drivers/gpu/drm/i915/display/intel_bios.c |  9 +++++++++
>  drivers/gpu/drm/i915/display/intel_bios.h |  1 +
>  drivers/gpu/drm/i915/display/intel_ddi.c  | 14 ++++++--------
>  3 files changed, 16 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
> index b231fafc03ca..50bff4e7d5c2 100644
> --- a/drivers/gpu/drm/i915/display/intel_bios.c
> +++ b/drivers/gpu/drm/i915/display/intel_bios.c
> @@ -2569,3 +2569,12 @@ int intel_bios_max_tmds_clock(struct intel_encoder *encoder)
>  
>  	return i915->vbt.ddi_port_info[encoder->port].max_tmds_clock;
>  }
> +
> +int intel_bios_hdmi_level_shift(struct intel_encoder *encoder)
> +{
> +	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
> +	const struct ddi_vbt_port_info *info =
> +		&i915->vbt.ddi_port_info[encoder->port];
> +
> +	return info->hdmi_level_shift_set ? info->hdmi_level_shift : -1;
> +}
> diff --git a/drivers/gpu/drm/i915/display/intel_bios.h b/drivers/gpu/drm/i915/display/intel_bios.h
> index 519e983ee9e7..c6cc413bf8ec 100644
> --- a/drivers/gpu/drm/i915/display/intel_bios.h
> +++ b/drivers/gpu/drm/i915/display/intel_bios.h
> @@ -248,5 +248,6 @@ bool intel_bios_get_dsc_params(struct intel_encoder *encoder,
>  			       struct intel_crtc_state *crtc_state,
>  			       int dsc_max_bpc);
>  int intel_bios_max_tmds_clock(struct intel_encoder *encoder);
> +int intel_bios_hdmi_level_shift(struct intel_encoder *encoder);
>  
>  #endif /* _INTEL_BIOS_H_ */
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
> index 32ea3c7e8b62..cfaa64df9892 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> @@ -944,11 +944,11 @@ tgl_get_combo_buf_trans(struct drm_i915_private *dev_priv, int type, int rate,
>  	return tgl_combo_phy_ddi_translations_dp_hbr;
>  }
>  
> -static int intel_ddi_hdmi_level(struct drm_i915_private *dev_priv, enum port port)
> +static int intel_ddi_hdmi_level(struct intel_encoder *encoder)
>  {
> -	struct ddi_vbt_port_info *port_info = &dev_priv->vbt.ddi_port_info[port];
> +	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
>  	int n_entries, level, default_entry;
> -	enum phy phy = intel_port_to_phy(dev_priv, port);
> +	enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
>  
>  	if (INTEL_GEN(dev_priv) >= 12) {
>  		if (intel_phy_is_combo(dev_priv, phy))
> @@ -987,9 +987,8 @@ static int intel_ddi_hdmi_level(struct drm_i915_private *dev_priv, enum port por
>  	if (WARN_ON_ONCE(n_entries == 0))
>  		return 0;
>  
> -	if (port_info->hdmi_level_shift_set)
> -		level = port_info->hdmi_level_shift;
> -	else
> +	level = intel_bios_hdmi_level_shift(encoder);
> +	if (level < 0)
>  		level = default_entry;
>  
>  	if (WARN_ON_ONCE(level >= n_entries))
> @@ -3665,8 +3664,7 @@ static void intel_ddi_pre_enable_hdmi(struct intel_encoder *encoder,
>  	struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
>  	struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
>  	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> -	enum port port = encoder->port;
> -	int level = intel_ddi_hdmi_level(dev_priv, port);
> +	int level = intel_ddi_hdmi_level(encoder);
>  	struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
>  
>  	intel_dp_dual_mode_set_tmds_output(intel_hdmi, true);
> -- 
> 2.20.1
> 
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-- 
Ville Syrjälä
Intel