platform/chrome: cros_ec_typec: Add struct for port data

Add a separate struct for storing port data, including Type C connector
class struct pointers and caps.

Signed-off-by: Prashant Malani <[email protected]>
Reviewed-by: Heikki Krogerus <[email protected]>
Signed-off-by: Enric Balletbo i Serra <[email protected]>

Author: Prashant Malani

drivers/platform/chrome/cros_ec_typec.c

@@ -17,16 +17,21 @@
 
 #define DRV_NAME "cros-ec-typec"
 
+/* Per port data. */
+struct cros_typec_port {
+	struct typec_port *port;
+	/* Initial capabilities for the port. */
+	struct typec_capability caps;
+};
+
 /* Platform-specific data for the Chrome OS EC Type C controller. */
 struct cros_typec_data {
 	struct device *dev;
 	struct cros_ec_device *ec;
 	int num_ports;
 	unsigned int cmd_ver;
 	/* Array of ports, indexed by port number. */
-	struct typec_port *ports[EC_USB_PD_MAX_PORTS];
-	/* Initial capabilities for each port. */
-	struct typec_capability *caps[EC_USB_PD_MAX_PORTS];
+	struct cros_typec_port *ports[EC_USB_PD_MAX_PORTS];
 	struct notifier_block nb;
 };
 
@@ -76,14 +81,25 @@ static int cros_typec_parse_port_props(struct typec_capability *cap,
 	return 0;
 }
 
+static void cros_unregister_ports(struct cros_typec_data *typec)
+{
+	int i;
+
+	for (i = 0; i < typec->num_ports; i++) {
+		if (!typec->ports[i])
+			continue;
+		typec_unregister_port(typec->ports[i]->port);
+	}
+}
+
 static int cros_typec_init_ports(struct cros_typec_data *typec)
 {
 	struct device *dev = typec->dev;
 	struct typec_capability *cap;
 	struct fwnode_handle *fwnode;
+	struct cros_typec_port *cros_port;
 	const char *port_prop;
 	int ret;
-	int i;
 	int nports;
 	u32 port_num = 0;
 
@@ -115,31 +131,31 @@ static int cros_typec_init_ports(struct cros_typec_data *typec)
 
 		dev_dbg(dev, "Registering port %d\n", port_num);
 
-		cap = devm_kzalloc(dev, sizeof(*cap), GFP_KERNEL);
-		if (!cap) {
+		cros_port = devm_kzalloc(dev, sizeof(*cros_port), GFP_KERNEL);
+		if (!cros_port) {
 			ret = -ENOMEM;
 			goto unregister_ports;
 		}
 
-		typec->caps[port_num] = cap;
+		typec->ports[port_num] = cros_port;
+		cap = &cros_port->caps;
 
 		ret = cros_typec_parse_port_props(cap, fwnode, dev);
 		if (ret < 0)
 			goto unregister_ports;
 
-		typec->ports[port_num] = typec_register_port(dev, cap);
-		if (IS_ERR(typec->ports[port_num])) {
+		cros_port->port = typec_register_port(dev, cap);
+		if (IS_ERR(cros_port->port)) {
 			dev_err(dev, "Failed to register port %d\n", port_num);
-			ret = PTR_ERR(typec->ports[port_num]);
+			ret = PTR_ERR(cros_port->port);
 			goto unregister_ports;
 		}
 	}
 
 	return 0;
 
 unregister_ports:
-	for (i = 0; i < typec->num_ports; i++)
-		typec_unregister_port(typec->ports[i]);
+	cros_unregister_ports(typec);
 	return ret;
 }
 
@@ -177,7 +193,7 @@ static int cros_typec_ec_command(struct cros_typec_data *typec,
 static void cros_typec_set_port_params_v0(struct cros_typec_data *typec,
 		int port_num, struct ec_response_usb_pd_control *resp)
 {
-	struct typec_port *port = typec->ports[port_num];
+	struct typec_port *port = typec->ports[port_num]->port;
 	enum typec_orientation polarity;
 
 	if (!resp->enabled)
@@ -194,7 +210,7 @@ static void cros_typec_set_port_params_v0(struct cros_typec_data *typec,
 static void cros_typec_set_port_params_v1(struct cros_typec_data *typec,
 		int port_num, struct ec_response_usb_pd_control_v1 *resp)
 {
-	struct typec_port *port = typec->ports[port_num];
+	struct typec_port *port = typec->ports[port_num]->port;
 	enum typec_orientation polarity;
 
 	if (!(resp->enabled & PD_CTRL_RESP_ENABLED_CONNECTED))
@@ -358,9 +374,7 @@ static int cros_typec_probe(struct platform_device *pdev)
 	return 0;
 
 unregister_ports:
-	for (i = 0; i < typec->num_ports; i++)
-		if (typec->ports[i])
-			typec_unregister_port(typec->ports[i]);
+	cros_unregister_ports(typec);
 	return ret;
 }