3  * USB Role Switch Support
10 #include <linux/usb/role.h>
21 	enum usb_role role;  member
35  * usb_role_switch_set_role - Set USB role for a switch
36  * @sw: USB role switch
37  * @role: USB role to be switched to
39  * Set USB role @role for @sw.
41 int usb_role_switch_set_role(struct usb_role_switch *sw, enum usb_role role)  in usb_role_switch_set_role()  argument
50 	ret = sw->set(sw->dev.parent, role);  in usb_role_switch_set_role()
52 		sw->role = role;  in usb_role_switch_set_role()
61  * usb_role_switch_get_role - Get the USB role for a switch
62  * @sw: USB role switch
64  * Depending on the role-switch-driver this function returns either a cached
65  * value of the last set role, or reads back the actual value from the hardware.
69 	enum usb_role role;  in usb_role_switch_get_role()  local
77 		role = sw->get(sw->dev.parent);  in usb_role_switch_get_role()
79 		role = sw->role;  in usb_role_switch_get_role()
83 	return role;  in usb_role_switch_get_role()
104  * usb_role_switch_get - Find USB role switch linked with the caller
107  * Finds and returns role switch linked with @dev. The reference count for the
114 	sw = device_connection_find_match(dev, "usb-role-switch", NULL,  in usb_role_switch_get()
126  * @sw: USB Role Switch
161 	enum usb_role role = usb_role_switch_get_role(sw);  in role_show()  local
163 	return sprintf(buf, "%s\n", usb_roles[role]);  in role_show()
188 static DEVICE_ATTR_RW(role);
232  * usb_role_switch_register - Register USB Role Switch
236  * USB Role Switch is a device capable or choosing the role for USB connector.
237  * On platforms where the USB controller is dual-role capable, the controller
242  * Returns handle to a new role switch or ERR_PTR. The content of @desc is
271 	dev_set_name(&sw->dev, "%s-role-switch", dev_name(parent));  in usb_role_switch_register()
286  * usb_role_switch_unregister - Unregsiter USB Role Switch
287  * @sw: USB Role Switch
314 MODULE_DESCRIPTION("USB Role Class");