usb/roles/class.c

11 #include <linux/usb/role.h>
26 	enum usb_role role;
48 	ret = sysfs_create_link(&connector->kobj, &dev->kobj, "usb-role-switch");
57 	sysfs_remove_link(&connector->kobj, "usb-role-switch");
67  * usb_role_switch_set_role - Set USB role for a switch
68  * @sw: USB role switch
69  * @role: USB role to be switched to
71  * Set USB role @role for @sw.
73 int usb_role_switch_set_role(struct usb_role_switch *sw, enum usb_role role)
85 	ret = sw->set(sw, role);
87 		sw->role = role;
98  * usb_role_switch_get_role - Get the USB role for a switch
99  * @sw: USB role switch
101  * Depending on the role-switch-driver this function returns either a cached
102  * value of the last set role, or reads back the actual value from the hardware.
106 	enum usb_role role;
114 		role = sw->get(sw);
116 		role = sw->role;
120 	return role;
143 	if (!fwnode_property_present(parent, "usb-role-switch")) {
154  * usb_role_switch_get - Find USB role switch linked with the caller
157  * Finds and returns role switch linked with @dev. The reference count for the
166 		sw = device_connection_find_match(dev, "usb-role-switch", NULL,
177  * fwnode_usb_role_switch_get - Find USB role switch linked with the caller
189 		sw = fwnode_connection_find_match(fwnode, "usb-role-switch",
214  * usb_role_switch_find_by_fwnode - Find USB role switch with its fwnode
217  * Finds and returns role switch with @fwnode. The reference count for the
257 const char *usb_role_string(enum usb_role role)
259 	if (role < 0 || role >= ARRAY_SIZE(usb_roles))
262 	return usb_roles[role];
270 	enum usb_role role = usb_role_switch_get_role(sw);
272 	return sprintf(buf, "%s\n", usb_roles[role]);
297 static DEVICE_ATTR_RW(role);
344  * USB Role Switch is a device capable or choosing the role for USB connector.
345  * On platforms where the USB controller is dual-role capable, the controller
350  * Returns handle to a new role switch or ERR_PTR. The content of @desc is
382 	dev_set_name(&sw->dev, "%s-role-switch",