Re: [PATCH v7 13/17] drm/i915: Plumb port through hdcp init

From: Ramalingam C <ramalingam.c@intel.com>
To: Sean Paul <sean@poorly.run>
Cc: dri-devel@lists.freedesktop.org, daniel.vetter@ffwll.ch,
	intel-gfx@lists.freedesktop.org,
	Sean Paul <seanpaul@chromium.org>,
	juston.li@intel.com, rodrigo.vivi@intel.com
Subject: Re: [PATCH v7 13/17] drm/i915: Plumb port through hdcp init
Date: Thu, 9 Jul 2020 16:25:18 +0530	[thread overview]
Message-ID: <20200709105518.GE13481@intel.com> (raw)
In-Reply-To: <20200623155907.22961-14-sean@poorly.run>

On 2020-06-23 at 11:59:03 -0400, Sean Paul wrote:
> From: Sean Paul <seanpaul@chromium.org>
> 
> This patch plumbs port through hdcp init instead of relying on
> intel_attached_encoder() to return a non-NULL encoder which won't work
> for MST connectors.
> 
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>

> Link: https://patchwork.freedesktop.org/patch/msgid/20200305201236.152307-13-sean@poorly.run #v5
> Link: https://patchwork.freedesktop.org/patch/msgid/20200429195502.39919-13-sean@poorly.run #v6
> 
> Changes in v5:
> -Added to the set
> Changes in v6:
> -None
> Changes in v7:
> -None
> ---
>  drivers/gpu/drm/i915/display/intel_dp_hdcp.c |  3 ++-
>  drivers/gpu/drm/i915/display/intel_hdcp.c    | 11 ++++++-----
>  drivers/gpu/drm/i915/display/intel_hdcp.h    |  2 +-
>  drivers/gpu/drm/i915/display/intel_hdmi.c    |  2 +-
>  4 files changed, 10 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c
> index 0e06a1066d61..e26a45f880cb 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c
> @@ -630,7 +630,8 @@ int intel_dp_init_hdcp(struct intel_digital_port *intel_dig_port,
>  		return 0;
>  
>  	if (!intel_dp_is_edp(intel_dp))
> -		return intel_hdcp_init(intel_connector, &intel_dp_hdcp_shim);
> +		return intel_hdcp_init(intel_connector, port,
> +				       &intel_dp_hdcp_shim);
>  
>  	return 0;
>  }
> diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
> index 5679877c6b4c..d79d4142aea7 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdcp.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
> @@ -1955,6 +1955,7 @@ static enum mei_fw_tc intel_get_mei_fw_tc(enum transcoder cpu_transcoder)
>  }
>  
>  static int initialize_hdcp_port_data(struct intel_connector *connector,
> +				     enum port port,
>  				     const struct intel_hdcp_shim *shim)
>  {
>  	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> @@ -1962,8 +1963,7 @@ static int initialize_hdcp_port_data(struct intel_connector *connector,
>  	struct hdcp_port_data *data = &hdcp->port_data;
>  
>  	if (INTEL_GEN(dev_priv) < 12)
> -		data->fw_ddi =
> -			intel_get_mei_fw_ddi_index(intel_attached_encoder(connector)->port);
> +		data->fw_ddi = intel_get_mei_fw_ddi_index(port);
>  	else
>  		/*
>  		 * As per ME FW API expectation, for GEN 12+, fw_ddi is filled
> @@ -2033,14 +2033,14 @@ void intel_hdcp_component_init(struct drm_i915_private *dev_priv)
>  	}
>  }
>  
> -static void intel_hdcp2_init(struct intel_connector *connector,
> +static void intel_hdcp2_init(struct intel_connector *connector, enum port port,
>  			     const struct intel_hdcp_shim *shim)
>  {
>  	struct drm_i915_private *i915 = to_i915(connector->base.dev);
>  	struct intel_hdcp *hdcp = &connector->hdcp;
>  	int ret;
>  
> -	ret = initialize_hdcp_port_data(connector, shim);
> +	ret = initialize_hdcp_port_data(connector, port, shim);
>  	if (ret) {
>  		drm_dbg_kms(&i915->drm, "Mei hdcp data init failed\n");
>  		return;
> @@ -2050,6 +2050,7 @@ static void intel_hdcp2_init(struct intel_connector *connector,
>  }
>  
>  int intel_hdcp_init(struct intel_connector *connector,
> +		    enum port port,
>  		    const struct intel_hdcp_shim *shim)
>  {
>  	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> @@ -2060,7 +2061,7 @@ int intel_hdcp_init(struct intel_connector *connector,
>  		return -EINVAL;
>  
>  	if (is_hdcp2_supported(dev_priv))
> -		intel_hdcp2_init(connector, shim);
> +		intel_hdcp2_init(connector, port, shim);
>  
>  	ret =
>  	drm_connector_attach_content_protection_property(&connector->base,
> diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.h b/drivers/gpu/drm/i915/display/intel_hdcp.h
> index 86bbaec120cc..1bbf5b67ed0a 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdcp.h
> +++ b/drivers/gpu/drm/i915/display/intel_hdcp.h
> @@ -22,7 +22,7 @@ enum transcoder;
>  void intel_hdcp_atomic_check(struct drm_connector *connector,
>  			     struct drm_connector_state *old_state,
>  			     struct drm_connector_state *new_state);
> -int intel_hdcp_init(struct intel_connector *connector,
> +int intel_hdcp_init(struct intel_connector *connector, enum port port,
>  		    const struct intel_hdcp_shim *hdcp_shim);
>  int intel_hdcp_enable(struct intel_connector *connector,
>  		      enum transcoder cpu_transcoder, u8 content_type);
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index a59acfff456e..ca71ee3dd1c7 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -3260,7 +3260,7 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
>  	intel_hdmi->attached_connector = intel_connector;
>  
>  	if (is_hdcp_supported(dev_priv, port)) {
> -		int ret = intel_hdcp_init(intel_connector,
> +		int ret = intel_hdcp_init(intel_connector, port,
>  					  &intel_hdmi_hdcp_shim);
>  		if (ret)
>  			drm_dbg_kms(&dev_priv->drm,
> -- 
> Sean Paul, Software Engineer, Google / Chromium OS
> 
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