Re: [PATCH v9 01/39] drm/i915: Gathering the HDCP1.4 routines together

[Daniel Vetter <daniel@ffwll.ch>]

On Thu, Dec 13, 2018 at 09:31:03AM +0530, Ramalingam C wrote:
> All HDCP1.4 routines are gathered together, followed by the generic
> functions those can be extended for HDCP2.2 too.
> 
> Signed-off-by: Ramalingam C <ramalingam.c@intel.com>

Since just code movement:

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>

> ---
>  drivers/gpu/drm/i915/intel_hdcp.c | 118 +++++++++++++++++++-------------------
>  1 file changed, 59 insertions(+), 59 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c
> index e000e54ad569..506b4cc6f46b 100644
> --- a/drivers/gpu/drm/i915/intel_hdcp.c
> +++ b/drivers/gpu/drm/i915/intel_hdcp.c
> @@ -731,6 +731,65 @@ struct intel_connector *intel_hdcp_to_connector(struct intel_hdcp *hdcp)
>  	return container_of(hdcp, struct intel_connector, hdcp);
>  }
>  
> +/* Implements Part 3 of the HDCP authorization procedure */
> +int intel_hdcp_check_link(struct intel_connector *connector)
> +{
> +	struct intel_hdcp *hdcp = &connector->hdcp;
> +	struct drm_i915_private *dev_priv = connector->base.dev->dev_private;
> +	struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
> +	enum port port = intel_dig_port->base.port;
> +	int ret = 0;
> +
> +	if (!hdcp->shim)
> +		return -ENOENT;
> +
> +	mutex_lock(&hdcp->mutex);
> +
> +	if (hdcp->value == DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
> +		goto out;
> +
> +	if (!(I915_READ(PORT_HDCP_STATUS(port)) & HDCP_STATUS_ENC)) {
> +		DRM_ERROR("%s:%d HDCP check failed: link is not encrypted,%x\n",
> +			  connector->base.name, connector->base.base.id,
> +			  I915_READ(PORT_HDCP_STATUS(port)));
> +		ret = -ENXIO;
> +		hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
> +		schedule_work(&hdcp->prop_work);
> +		goto out;
> +	}
> +
> +	if (hdcp->shim->check_link(intel_dig_port)) {
> +		if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
> +			hdcp->value = DRM_MODE_CONTENT_PROTECTION_ENABLED;
> +			schedule_work(&hdcp->prop_work);
> +		}
> +		goto out;
> +	}
> +
> +	DRM_DEBUG_KMS("[%s:%d] HDCP link failed, retrying authentication\n",
> +		      connector->base.name, connector->base.base.id);
> +
> +	ret = _intel_hdcp_disable(connector);
> +	if (ret) {
> +		DRM_ERROR("Failed to disable hdcp (%d)\n", ret);
> +		hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
> +		schedule_work(&hdcp->prop_work);
> +		goto out;
> +	}
> +
> +	ret = _intel_hdcp_enable(connector);
> +	if (ret) {
> +		DRM_ERROR("Failed to enable hdcp (%d)\n", ret);
> +		hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
> +		schedule_work(&hdcp->prop_work);
> +		goto out;
> +	}
> +
> +out:
> +	mutex_unlock(&hdcp->mutex);
> +	return ret;
> +}
> +
>  static void intel_hdcp_check_work(struct work_struct *work)
>  {
>  	struct intel_hdcp *hdcp = container_of(to_delayed_work(work),
> @@ -867,62 +926,3 @@ void intel_hdcp_atomic_check(struct drm_connector *connector,
>  						   new_state->crtc);
>  	crtc_state->mode_changed = true;
>  }
> -
> -/* Implements Part 3 of the HDCP authorization procedure */
> -int intel_hdcp_check_link(struct intel_connector *connector)
> -{
> -	struct intel_hdcp *hdcp = &connector->hdcp;
> -	struct drm_i915_private *dev_priv = connector->base.dev->dev_private;
> -	struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
> -	enum port port = intel_dig_port->base.port;
> -	int ret = 0;
> -
> -	if (!hdcp->shim)
> -		return -ENOENT;
> -
> -	mutex_lock(&hdcp->mutex);
> -
> -	if (hdcp->value == DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
> -		goto out;
> -
> -	if (!(I915_READ(PORT_HDCP_STATUS(port)) & HDCP_STATUS_ENC)) {
> -		DRM_ERROR("%s:%d HDCP check failed: link is not encrypted,%x\n",
> -			  connector->base.name, connector->base.base.id,
> -			  I915_READ(PORT_HDCP_STATUS(port)));
> -		ret = -ENXIO;
> -		hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
> -		schedule_work(&hdcp->prop_work);
> -		goto out;
> -	}
> -
> -	if (hdcp->shim->check_link(intel_dig_port)) {
> -		if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
> -			hdcp->value = DRM_MODE_CONTENT_PROTECTION_ENABLED;
> -			schedule_work(&hdcp->prop_work);
> -		}
> -		goto out;
> -	}
> -
> -	DRM_DEBUG_KMS("[%s:%d] HDCP link failed, retrying authentication\n",
> -		      connector->base.name, connector->base.base.id);
> -
> -	ret = _intel_hdcp_disable(connector);
> -	if (ret) {
> -		DRM_ERROR("Failed to disable hdcp (%d)\n", ret);
> -		hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
> -		schedule_work(&hdcp->prop_work);
> -		goto out;
> -	}
> -
> -	ret = _intel_hdcp_enable(connector);
> -	if (ret) {
> -		DRM_DEBUG_KMS("Failed to enable hdcp (%d)\n", ret);
> -		hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
> -		schedule_work(&hdcp->prop_work);
> -		goto out;
> -	}
> -
> -out:
> -	mutex_unlock(&hdcp->mutex);
> -	return ret;
> -}
> -- 
> 2.7.4
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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