usb: typec: mux: Allow the muxes to be named

The mux devices have been named by using the name of the
parent device as base until now, but if for example the
parent device has multiple muxes that will not work. This
makes it possible to supply the name for a mux during
registration.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20200302135353.56659-2-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/typec/mux.c

@@ -127,7 +127,8 @@ typec_switch_register(struct device *parent,
 	sw->dev.class = &typec_mux_class;
 	sw->dev.type = &typec_switch_dev_type;
 	sw->dev.driver_data = desc->drvdata;
-	dev_set_name(&sw->dev, "%s-switch", dev_name(parent));
+	dev_set_name(&sw->dev, "%s-switch",
+		     desc->name ? desc->name : dev_name(parent));
 
 	ret = device_add(&sw->dev);
 	if (ret) {
@@ -309,7 +310,8 @@ typec_mux_register(struct device *parent, const struct typec_mux_desc *desc)
 	mux->dev.class = &typec_mux_class;
 	mux->dev.type = &typec_mux_dev_type;
 	mux->dev.driver_data = desc->drvdata;
-	dev_set_name(&mux->dev, "%s-mux", dev_name(parent));
+	dev_set_name(&mux->dev, "%s-mux",
+		     desc->name ? desc->name : dev_name(parent));
 
 	ret = device_add(&mux->dev);
 	if (ret) {

include/linux/usb/typec_mux.h

@@ -17,6 +17,7 @@ typedef int (*typec_switch_set_fn_t)(struct typec_switch *sw,
 struct typec_switch_desc {
 	struct fwnode_handle *fwnode;
 	typec_switch_set_fn_t set;
+	const char *name;
 	void *drvdata;
 };
 
@@ -42,6 +43,7 @@ typedef int (*typec_mux_set_fn_t)(struct typec_mux *mux,
 struct typec_mux_desc {
 	struct fwnode_handle *fwnode;
 	typec_mux_set_fn_t set;
+	const char *name;
 	void *drvdata;
 };