USB: typec: tps6598x: Refactor tps6598x port registration

tps6598x and cd321x use TPS_REG_SYSTEM_CONF to get dr/pr roles
where other similar devices don't have this register such as tps25750.

Move tps6598x port registration to its own function

Signed-off-by: Abdel Alkuor <abdelalkuor@geotab.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20231003155842.57313-5-alkuor@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/typec/tipd/core.c

@@ -711,15 +711,65 @@ static int devm_tps6598_psy_register(struct tps6598x *tps)
 	return PTR_ERR_OR_ZERO(tps->psy);
 }
 
+static int
+tps6598x_register_port(struct tps6598x *tps, struct fwnode_handle *fwnode)
+{
+	int ret;
+	u32 conf;
+	struct typec_capability typec_cap = { };
+
+	ret = tps6598x_read32(tps, TPS_REG_SYSTEM_CONF, &conf);
+	if (ret)
+		return ret;
+
+	typec_cap.revision = USB_TYPEC_REV_1_2;
+	typec_cap.pd_revision = 0x200;
+	typec_cap.prefer_role = TYPEC_NO_PREFERRED_ROLE;
+	typec_cap.driver_data = tps;
+	typec_cap.ops = &tps6598x_ops;
+	typec_cap.fwnode = fwnode;
+
+	switch (TPS_SYSCONF_PORTINFO(conf)) {
+	case TPS_PORTINFO_SINK_ACCESSORY:
+	case TPS_PORTINFO_SINK:
+		typec_cap.type = TYPEC_PORT_SNK;
+		typec_cap.data = TYPEC_PORT_UFP;
+		break;
+	case TPS_PORTINFO_DRP_UFP_DRD:
+	case TPS_PORTINFO_DRP_DFP_DRD:
+		typec_cap.type = TYPEC_PORT_DRP;
+		typec_cap.data = TYPEC_PORT_DRD;
+		break;
+	case TPS_PORTINFO_DRP_UFP:
+		typec_cap.type = TYPEC_PORT_DRP;
+		typec_cap.data = TYPEC_PORT_UFP;
+		break;
+	case TPS_PORTINFO_DRP_DFP:
+		typec_cap.type = TYPEC_PORT_DRP;
+		typec_cap.data = TYPEC_PORT_DFP;
+		break;
+	case TPS_PORTINFO_SOURCE:
+		typec_cap.type = TYPEC_PORT_SRC;
+		typec_cap.data = TYPEC_PORT_DFP;
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	tps->port = typec_register_port(tps->dev, &typec_cap);
+	if (IS_ERR(tps->port))
+		return PTR_ERR(tps->port);
+
+	return 0;
+}
+
 static int tps6598x_probe(struct i2c_client *client)
 {
 	irq_handler_t irq_handler = tps6598x_interrupt;
 	struct device_node *np = client->dev.of_node;
-	struct typec_capability typec_cap = { };
 	struct tps6598x *tps;
 	struct fwnode_handle *fwnode;
 	u32 status;
-	u32 conf;
 	u32 vid;
 	int ret;
 	u64 mask1;
@@ -780,10 +830,6 @@ static int tps6598x_probe(struct i2c_client *client)
 		goto err_clear_mask;
 	trace_tps6598x_status(status);
 
-	ret = tps6598x_read32(tps, TPS_REG_SYSTEM_CONF, &conf);
-	if (ret < 0)
-		goto err_clear_mask;
-
 	/*
 	 * This fwnode has a "compatible" property, but is never populated as a
 	 * struct device. Instead we simply parse it to read the properties.
@@ -801,50 +847,13 @@ static int tps6598x_probe(struct i2c_client *client)
 		goto err_fwnode_put;
 	}
 
-	typec_cap.revision = USB_TYPEC_REV_1_2;
-	typec_cap.pd_revision = 0x200;
-	typec_cap.prefer_role = TYPEC_NO_PREFERRED_ROLE;
-	typec_cap.driver_data = tps;
-	typec_cap.ops = &tps6598x_ops;
-	typec_cap.fwnode = fwnode;
-
-	switch (TPS_SYSCONF_PORTINFO(conf)) {
-	case TPS_PORTINFO_SINK_ACCESSORY:
-	case TPS_PORTINFO_SINK:
-		typec_cap.type = TYPEC_PORT_SNK;
-		typec_cap.data = TYPEC_PORT_UFP;
-		break;
-	case TPS_PORTINFO_DRP_UFP_DRD:
-	case TPS_PORTINFO_DRP_DFP_DRD:
-		typec_cap.type = TYPEC_PORT_DRP;
-		typec_cap.data = TYPEC_PORT_DRD;
-		break;
-	case TPS_PORTINFO_DRP_UFP:
-		typec_cap.type = TYPEC_PORT_DRP;
-		typec_cap.data = TYPEC_PORT_UFP;
-		break;
-	case TPS_PORTINFO_DRP_DFP:
-		typec_cap.type = TYPEC_PORT_DRP;
-		typec_cap.data = TYPEC_PORT_DFP;
-		break;
-	case TPS_PORTINFO_SOURCE:
-		typec_cap.type = TYPEC_PORT_SRC;
-		typec_cap.data = TYPEC_PORT_DFP;
-		break;
-	default:
-		ret = -ENODEV;
-		goto err_role_put;
-	}
-
 	ret = devm_tps6598_psy_register(tps);
 	if (ret)
 		goto err_role_put;
 
-	tps->port = typec_register_port(&client->dev, &typec_cap);
-	if (IS_ERR(tps->port)) {
-		ret = PTR_ERR(tps->port);
+	ret = tps6598x_register_port(tps, fwnode);
+	if (ret)
 		goto err_role_put;
-	}
 
 	if (status & TPS_STATUS_PLUG_PRESENT) {
 		ret = tps6598x_read16(tps, TPS_REG_POWER_STATUS, &tps->pwr_status);