platform/x86: intel_cht_int33fe: Add device connections for the Type-C port

We need to add device-connections for the Type-C mux/switch and usb-role
code to be able to find the PI3USB30532 Type-C cross-switch and the
device/host role-switch integrated in the CHT SoC.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/platform/x86/intel_cht_int33fe.c

@@ -33,6 +33,8 @@ struct cht_int33fe_data {
 	struct i2c_client *max17047;
 	struct i2c_client *fusb302;
 	struct i2c_client *pi3usb30532;
+	/* Contain a list-head must be per device */
+	struct device_connection connections[3];
 };
 
 /*
@@ -172,6 +174,20 @@ static int cht_int33fe_probe(struct i2c_client *client)
 			return -EPROBE_DEFER; /* Wait for i2c-adapter to load */
 	}
 
+	data->connections[0].endpoint[0] = "i2c-fusb302";
+	data->connections[0].endpoint[1] = "i2c-pi3usb30532";
+	data->connections[0].id = "typec-switch";
+	data->connections[1].endpoint[0] = "i2c-fusb302";
+	data->connections[1].endpoint[1] = "i2c-pi3usb30532";
+	data->connections[1].id = "typec-mux";
+	data->connections[2].endpoint[0] = "i2c-fusb302";
+	data->connections[2].endpoint[1] = "intel_xhci_usb_sw-role-switch";
+	data->connections[2].id = "usb-role-switch";
+
+	device_connection_add(&data->connections[0]);
+	device_connection_add(&data->connections[1]);
+	device_connection_add(&data->connections[2]);
+
 	memset(&board_info, 0, sizeof(board_info));
 	strlcpy(board_info.type, "typec_fusb302", I2C_NAME_SIZE);
 	board_info.dev_name = "fusb302";
@@ -201,6 +217,10 @@ static int cht_int33fe_probe(struct i2c_client *client)
 	if (data->max17047)
 		i2c_unregister_device(data->max17047);
 
+	device_connection_remove(&data->connections[2]);
+	device_connection_remove(&data->connections[1]);
+	device_connection_remove(&data->connections[0]);
+
 	return -EPROBE_DEFER; /* Wait for the i2c-adapter to load */
 }
 
@@ -213,6 +233,10 @@ static int cht_int33fe_remove(struct i2c_client *i2c)
 	if (data->max17047)
 		i2c_unregister_device(data->max17047);
 
+	device_connection_remove(&data->connections[2]);
+	device_connection_remove(&data->connections[1]);
+	device_connection_remove(&data->connections[0]);
+
 	return 0;
 }