3  * USB Role Switch Support
10 #include <linux/usb/role.h>
23 	enum usb_role role;  member
37  * usb_role_switch_set_role - Set USB role for a switch
38  * @sw: USB role switch
39  * @role: USB role to be switched to
41  * Set USB role @role for @sw.
43 int usb_role_switch_set_role(struct usb_role_switch *sw, enum usb_role role)  in usb_role_switch_set_role()  argument
52 	ret = sw->set(sw, role);  in usb_role_switch_set_role()
54 		sw->role = role;  in usb_role_switch_set_role()
65  * usb_role_switch_get_role - Get the USB role for a switch
66  * @sw: USB role switch
68  * Depending on the role-switch-driver this function returns either a cached
69  * value of the last set role, or reads back the actual value from the hardware.
73 	enum usb_role role;  in usb_role_switch_get_role()  local
81 		role = sw->get(sw);  in usb_role_switch_get_role()
83 		role = sw->role;  in usb_role_switch_get_role()
87 	return role;  in usb_role_switch_get_role()
110 	if (!fwnode_property_present(parent, "usb-role-switch")) {  in usb_role_switch_is_parent()
121  * usb_role_switch_get - Find USB role switch linked with the caller
124  * Finds and returns role switch linked with @dev. The reference count for the
133 		sw = device_connection_find_match(dev, "usb-role-switch", NULL,  in usb_role_switch_get()
144  * fwnode_usb_role_switch_get - Find USB role switch linked with the caller
156 		sw = fwnode_connection_find_match(fwnode, "usb-role-switch",  in fwnode_usb_role_switch_get()
167  * @sw: USB Role Switch
181  * usb_role_switch_find_by_fwnode - Find USB role switch with its fwnode
182  * @fwnode: fwnode of the USB Role Switch
184  * Finds and returns role switch with @fwnode. The reference count for the
228 	enum usb_role role = usb_role_switch_get_role(sw);  in role_show()  local
230 	return sprintf(buf, "%s\n", usb_roles[role]);  in role_show()
255 static DEVICE_ATTR_RW(role);
299  * usb_role_switch_register - Register USB Role Switch
303  * USB Role Switch is a device capable or choosing the role for USB connector.
304  * On platforms where the USB controller is dual-role capable, the controller
309  * Returns handle to a new role switch or ERR_PTR. The content of @desc is
341 	dev_set_name(&sw->dev, "%s-role-switch",  in usb_role_switch_register()
357  * usb_role_switch_unregister - Unregsiter USB Role Switch
358  * @sw: USB Role Switch
371  * @sw: USB Role Switch
382  * @sw: USB Role Switch
406 MODULE_DESCRIPTION("USB Role Class");