3  * USB Role Switch Support
10 #include <linux/usb/role.h>
22 	enum usb_role role;  member
36  * usb_role_switch_set_role - Set USB role for a switch
37  * @sw: USB role switch
38  * @role: USB role to be switched to
40  * Set USB role @role for @sw.
42 int usb_role_switch_set_role(struct usb_role_switch *sw, enum usb_role role)  in usb_role_switch_set_role()  argument
51 	ret = sw->set(sw, role);  in usb_role_switch_set_role()
53 		sw->role = role;  in usb_role_switch_set_role()
64  * usb_role_switch_get_role - Get the USB role for a switch
65  * @sw: USB role switch
67  * Depending on the role-switch-driver this function returns either a cached
68  * value of the last set role, or reads back the actual value from the hardware.
72 	enum usb_role role;  in usb_role_switch_get_role()  local
80 		role = sw->get(sw);  in usb_role_switch_get_role()
82 		role = sw->role;  in usb_role_switch_get_role()
86 	return role;  in usb_role_switch_get_role()
109 	if (!parent || !fwnode_property_present(parent, "usb-role-switch"))  in usb_role_switch_is_parent()
117  * usb_role_switch_get - Find USB role switch linked with the caller
120  * Finds and returns role switch linked with @dev. The reference count for the
129 		sw = device_connection_find_match(dev, "usb-role-switch", NULL,  in usb_role_switch_get()
140  * fwnode_usb_role_switch_get - Find USB role switch linked with the caller
152 		sw = fwnode_connection_find_match(fwnode, "usb-role-switch",  in fwnode_usb_role_switch_get()
163  * @sw: USB Role Switch
177  * usb_role_switch_find_by_fwnode - Find USB role switch with its fwnode
178  * @fwnode: fwnode of the USB Role Switch
180  * Finds and returns role switch with @fwnode. The reference count for the
219 	enum usb_role role = usb_role_switch_get_role(sw);  in role_show()  local
221 	return sprintf(buf, "%s\n", usb_roles[role]);  in role_show()
246 static DEVICE_ATTR_RW(role);
290  * usb_role_switch_register - Register USB Role Switch
294  * USB Role Switch is a device capable or choosing the role for USB connector.
295  * On platforms where the USB controller is dual-role capable, the controller
300  * Returns handle to a new role switch or ERR_PTR. The content of @desc is
331 	dev_set_name(&sw->dev, "%s-role-switch",  in usb_role_switch_register()
347  * usb_role_switch_unregister - Unregsiter USB Role Switch
348  * @sw: USB Role Switch
361  * @sw: USB Role Switch
372  * @sw: USB Role Switch
396 MODULE_DESCRIPTION("USB Role Class");