[PATCH v3 19/40] drm/i915: wrapping all hdcp var into intel_hdcp

[Ramalingam C <ramalingam.c@intel.com>]

Considering the upcoming significant no HDCP2.2 variables, it will
be clean to have separate struct fo HDCP.

New structure called intel_hdcp is introduced.

v2:
  struct hdcp statically allocated. [Sean Paul]
  enable and disable function parameters are retained.[Sean Paul]
v3:
  No Changes.

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
---
 drivers/gpu/drm/i915/intel_display.c |  7 +--
 drivers/gpu/drm/i915/intel_drv.h     | 14 ++++--
 drivers/gpu/drm/i915/intel_hdcp.c    | 94 ++++++++++++++++++++----------------
 3 files changed, 66 insertions(+), 49 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 331084082545..2d7c47135e1a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -15395,9 +15395,10 @@ static void intel_hpd_poll_fini(struct drm_device *dev)
 	for_each_intel_connector_iter(connector, &conn_iter) {
 		if (connector->modeset_retry_work.func)
 			cancel_work_sync(&connector->modeset_retry_work);
-		if (connector->hdcp_shim) {
-			cancel_delayed_work_sync(&connector->hdcp_check_work);
-			cancel_work_sync(&connector->hdcp_prop_work);
+		if (connector->hdcp.hdcp_shim) {
+			cancel_delayed_work_sync(
+					&connector->hdcp.hdcp_check_work);
+			cancel_work_sync(&connector->hdcp.hdcp_prop_work);
 		}
 	}
 	drm_connector_list_iter_end(&conn_iter);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index d4368589b355..fdffcb833cd2 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -377,6 +377,14 @@ struct intel_hdcp_shim {
 			    bool *hdcp_capable);
 };
 
+struct intel_hdcp {
+	const struct intel_hdcp_shim *hdcp_shim;
+	struct mutex hdcp_mutex;
+	uint64_t hdcp_value; /* protected by hdcp_mutex */
+	struct delayed_work hdcp_check_work;
+	struct work_struct hdcp_prop_work;
+};
+
 struct intel_connector {
 	struct drm_connector base;
 	/*
@@ -409,11 +417,7 @@ struct intel_connector {
 	/* Work struct to schedule a uevent on link train failure */
 	struct work_struct modeset_retry_work;
 
-	const struct intel_hdcp_shim *hdcp_shim;
-	struct mutex hdcp_mutex;
-	uint64_t hdcp_value; /* protected by hdcp_mutex */
-	struct delayed_work hdcp_check_work;
-	struct work_struct hdcp_prop_work;
+	struct intel_hdcp hdcp;
 };
 
 struct intel_digital_connector_state {
diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c
index 14ca5d3057a7..1cca4f349064 100644
--- a/drivers/gpu/drm/i915/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/intel_hdcp.c
@@ -547,6 +547,7 @@ struct intel_digital_port *conn_to_dig_port(struct intel_connector *connector)
 
 static int _intel_hdcp_disable(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;
@@ -562,7 +563,7 @@ static int _intel_hdcp_disable(struct intel_connector *connector)
 		return -ETIMEDOUT;
 	}
 
-	ret = connector->hdcp_shim->toggle_signalling(intel_dig_port, false);
+	ret = hdcp->hdcp_shim->toggle_signalling(intel_dig_port, false);
 	if (ret) {
 		DRM_ERROR("Failed to disable HDCP signalling\n");
 		return ret;
@@ -574,6 +575,7 @@ static int _intel_hdcp_disable(struct intel_connector *connector)
 
 static int _intel_hdcp_enable(struct intel_connector *connector)
 {
+	struct intel_hdcp *hdcp = &connector->hdcp;
 	struct drm_i915_private *dev_priv = connector->base.dev->dev_private;
 	int i, ret, tries = 3;
 
@@ -599,7 +601,7 @@ static int _intel_hdcp_enable(struct intel_connector *connector)
 	/* Incase of authentication failures, HDCP spec expects reauth. */
 	for (i = 0; i < tries; i++) {
 		ret = intel_hdcp_auth(conn_to_dig_port(connector),
-				      connector->hdcp_shim);
+				      hdcp->hdcp_shim);
 		if (!ret)
 			return 0;
 
@@ -615,36 +617,42 @@ static int _intel_hdcp_enable(struct intel_connector *connector)
 
 static void intel_hdcp_check_work(struct work_struct *work)
 {
-	struct intel_connector *connector = container_of(to_delayed_work(work),
+	struct intel_hdcp *hdcp = container_of(to_delayed_work(work),
+					       struct intel_hdcp,
+					       hdcp_check_work);
+	struct intel_connector *connector = container_of(hdcp,
 							 struct intel_connector,
-							 hdcp_check_work);
+							 hdcp);
+
 	if (!intel_hdcp_check_link(connector))
-		schedule_delayed_work(&connector->hdcp_check_work,
+		schedule_delayed_work(&hdcp->hdcp_check_work,
 				      DRM_HDCP_CHECK_PERIOD_MS);
 }
 
 static void intel_hdcp_prop_work(struct work_struct *work)
 {
-	struct intel_connector *connector = container_of(work,
+	struct intel_hdcp *hdcp = container_of(work, struct intel_hdcp,
+					       hdcp_prop_work);
+	struct intel_connector *connector = container_of(hdcp,
 							 struct intel_connector,
-							 hdcp_prop_work);
+							 hdcp);
 	struct drm_device *dev = connector->base.dev;
 	struct drm_connector_state *state;
 
 	drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
-	mutex_lock(&connector->hdcp_mutex);
+	mutex_lock(&hdcp->hdcp_mutex);
 
 	/*
 	 * This worker is only used to flip between ENABLED/DESIRED. Either of
 	 * those to UNDESIRED is handled by core. If hdcp_value == UNDESIRED,
 	 * we're running just after hdcp has been disabled, so just exit
 	 */
-	if (connector->hdcp_value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
+	if (hdcp->hdcp_value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
 		state = connector->base.state;
-		state->content_protection = connector->hdcp_value;
+		state->content_protection = hdcp->hdcp_value;
 	}
 
-	mutex_unlock(&connector->hdcp_mutex);
+	mutex_unlock(&hdcp->hdcp_mutex);
 	drm_modeset_unlock(&dev->mode_config.connection_mutex);
 }
 
@@ -658,6 +666,7 @@ bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port port)
 int intel_hdcp_init(struct intel_connector *connector,
 		    const struct intel_hdcp_shim *hdcp_shim)
 {
+	struct intel_hdcp *hdcp = &connector->hdcp;
 	int ret;
 
 	ret = drm_connector_attach_content_protection_property(
@@ -665,51 +674,53 @@ int intel_hdcp_init(struct intel_connector *connector,
 	if (ret)
 		return ret;
 
-	connector->hdcp_shim = hdcp_shim;
-	mutex_init(&connector->hdcp_mutex);
-	INIT_DELAYED_WORK(&connector->hdcp_check_work, intel_hdcp_check_work);
-	INIT_WORK(&connector->hdcp_prop_work, intel_hdcp_prop_work);
+	hdcp->hdcp_shim = hdcp_shim;
+	mutex_init(&hdcp->hdcp_mutex);
+	INIT_DELAYED_WORK(&hdcp->hdcp_check_work, intel_hdcp_check_work);
+	INIT_WORK(&hdcp->hdcp_prop_work, intel_hdcp_prop_work);
 	return 0;
 }
 
 int intel_hdcp_enable(struct intel_connector *connector)
 {
+	struct intel_hdcp *hdcp = &connector->hdcp;
 	int ret;
 
-	if (!connector->hdcp_shim)
+	if (!hdcp->hdcp_shim)
 		return -ENOENT;
 
-	mutex_lock(&connector->hdcp_mutex);
+	mutex_lock(&hdcp->hdcp_mutex);
 
 	ret = _intel_hdcp_enable(connector);
 	if (ret)
 		goto out;
 
-	connector->hdcp_value = DRM_MODE_CONTENT_PROTECTION_ENABLED;
-	schedule_work(&connector->hdcp_prop_work);
-	schedule_delayed_work(&connector->hdcp_check_work,
+	hdcp->hdcp_value = DRM_MODE_CONTENT_PROTECTION_ENABLED;
+	schedule_work(&hdcp->hdcp_prop_work);
+	schedule_delayed_work(&hdcp->hdcp_check_work,
 			      DRM_HDCP_CHECK_PERIOD_MS);
 out:
-	mutex_unlock(&connector->hdcp_mutex);
+	mutex_unlock(&hdcp->hdcp_mutex);
 	return ret;
 }
 
 int intel_hdcp_disable(struct intel_connector *connector)
 {
+	struct intel_hdcp *hdcp = &connector->hdcp;
 	int ret = 0;
 
-	if (!connector->hdcp_shim)
+	if (!hdcp->hdcp_shim)
 		return -ENOENT;
 
-	mutex_lock(&connector->hdcp_mutex);
+	mutex_lock(&hdcp->hdcp_mutex);
 
-	if (connector->hdcp_value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
-		connector->hdcp_value = DRM_MODE_CONTENT_PROTECTION_UNDESIRED;
+	if (hdcp->hdcp_value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
+		hdcp->hdcp_value = DRM_MODE_CONTENT_PROTECTION_UNDESIRED;
 		ret = _intel_hdcp_disable(connector);
 	}
 
-	mutex_unlock(&connector->hdcp_mutex);
-	cancel_delayed_work_sync(&connector->hdcp_check_work);
+	mutex_unlock(&hdcp->hdcp_mutex);
+	cancel_delayed_work_sync(&hdcp->hdcp_check_work);
 	return ret;
 }
 
@@ -749,17 +760,18 @@ void intel_hdcp_atomic_check(struct drm_connector *connector,
 /* 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 (!connector->hdcp_shim)
+	if (!hdcp->hdcp_shim)
 		return -ENOENT;
 
-	mutex_lock(&connector->hdcp_mutex);
+	mutex_lock(&hdcp->hdcp_mutex);
 
-	if (connector->hdcp_value == DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
+	if (hdcp->hdcp_value == DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
 		goto out;
 
 	if (!(I915_READ(PORT_HDCP_STATUS(port)) & HDCP_STATUS_ENC)) {
@@ -767,17 +779,17 @@ int intel_hdcp_check_link(struct intel_connector *connector)
 			  connector->base.name, connector->base.base.id,
 			  I915_READ(PORT_HDCP_STATUS(port)));
 		ret = -ENXIO;
-		connector->hdcp_value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
-		schedule_work(&connector->hdcp_prop_work);
+		hdcp->hdcp_value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
+		schedule_work(&hdcp->hdcp_prop_work);
 		goto out;
 	}
 
-	if (connector->hdcp_shim->check_link(intel_dig_port)) {
-		if (connector->hdcp_value !=
+	if (hdcp->hdcp_shim->check_link(intel_dig_port)) {
+		if (hdcp->hdcp_value !=
 		    DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
-			connector->hdcp_value =
+			hdcp->hdcp_value =
 				DRM_MODE_CONTENT_PROTECTION_ENABLED;
-			schedule_work(&connector->hdcp_prop_work);
+			schedule_work(&hdcp->hdcp_prop_work);
 		}
 		goto out;
 	}
@@ -788,20 +800,20 @@ int intel_hdcp_check_link(struct intel_connector *connector)
 	ret = _intel_hdcp_disable(connector);
 	if (ret) {
 		DRM_ERROR("Failed to disable hdcp (%d)\n", ret);
-		connector->hdcp_value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
-		schedule_work(&connector->hdcp_prop_work);
+		hdcp->hdcp_value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
+		schedule_work(&hdcp->hdcp_prop_work);
 		goto out;
 	}
 
 	ret = _intel_hdcp_enable(connector);
 	if (ret) {
 		DRM_ERROR("Failed to enable hdcp (%d)\n", ret);
-		connector->hdcp_value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
-		schedule_work(&connector->hdcp_prop_work);
+		hdcp->hdcp_value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
+		schedule_work(&hdcp->hdcp_prop_work);
 		goto out;
 	}
 
 out:
-	mutex_unlock(&connector->hdcp_mutex);
+	mutex_unlock(&hdcp->hdcp_mutex);
 	return ret;
 }
-- 
2.7.4

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