[Intel-gfx] [PATCH v3 06/13] drm/i915/dp: add helper for checking for UHBR link rate

[Ville Syrjälä]

On Thu, Sep 09, 2021 at 03:51:58PM +0300, Jani Nikula wrote:
> Helpful abstraction to avoid duplication.
> 
> 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_dp.c | 6 ++++++
>  drivers/gpu/drm/i915/display/intel_dp.h | 1 +
>  2 files changed, 7 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index d28bd8c4a8a5..d189d95e4450 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -115,6 +115,12 @@ bool intel_dp_is_edp(struct intel_dp *intel_dp)
>  static void intel_dp_unset_edid(struct intel_dp *intel_dp);
>  static int intel_dp_dsc_compute_bpp(struct intel_dp *intel_dp, u8 dsc_max_bpc);
>  
> +/* Is link rate UHBR and thus 128b/132b? */
> +bool intel_dp_is_uhbr(const struct intel_crtc_state *crtc_state)
> +{
> +	return crtc_state->port_clock >= 1000000;
> +}
> +
>  /* update sink rates from dpcd */
>  static void intel_dp_set_sink_rates(struct intel_dp *intel_dp)
>  {
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
> index a28fff286c21..94b568704b22 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.h
> +++ b/drivers/gpu/drm/i915/display/intel_dp.h
> @@ -58,6 +58,7 @@ int intel_dp_compute_config(struct intel_encoder *encoder,
>  			    struct intel_crtc_state *pipe_config,
>  			    struct drm_connector_state *conn_state);
>  bool intel_dp_is_edp(struct intel_dp *intel_dp);
> +bool intel_dp_is_uhbr(const struct intel_crtc_state *crtc_state);
>  bool intel_dp_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
>  enum irqreturn intel_dp_hpd_pulse(struct intel_digital_port *dig_port,
>  				  bool long_hpd);
> -- 
> 2.30.2

-- 
Ville Syrjälä
Intel