30 static int cdns3_role_start(struct cdns3 *cdns, enum usb_role role)  in cdns3_role_start()  argument
34 	if (WARN_ON(role > USB_ROLE_DEVICE))  in cdns3_role_start()
38 	cdns->role = role;  in cdns3_role_start()
41 	if (!cdns->roles[role])  in cdns3_role_start()
44 	if (cdns->roles[role]->state == CDNS3_ROLE_STATE_ACTIVE)  in cdns3_role_start()
48 	ret = cdns->roles[role]->start(cdns);  in cdns3_role_start()
50 		cdns->roles[role]->state = CDNS3_ROLE_STATE_ACTIVE;  in cdns3_role_start()
58 	enum usb_role role = cdns->role;  in cdns3_role_stop()  local
60 	if (WARN_ON(role > USB_ROLE_DEVICE))  in cdns3_role_stop()
63 	if (cdns->roles[role]->state == CDNS3_ROLE_STATE_INACTIVE)  in cdns3_role_stop()
67 	cdns->roles[role]->stop(cdns);  in cdns3_role_stop()
68 	cdns->roles[role]->state = CDNS3_ROLE_STATE_INACTIVE;  in cdns3_role_stop()
79  * cdns3_core_init_role - initialize role of operation
92 	cdns->role = USB_ROLE_NONE;  in cdns3_core_init_role()
154 	/* Initialize idle role to start with */  in cdns3_core_init_role()
187  * cdns3_hw_role_state_machine  - role switch state machine based on hw events.
190  * Returns next role to be entered based on hw events.
194 	enum usb_role role = USB_ROLE_NONE;  in cdns3_hw_role_state_machine()  local
199 			role = USB_ROLE_HOST;  in cdns3_hw_role_state_machine()
201 			role = USB_ROLE_DEVICE;  in cdns3_hw_role_state_machine()
203 		return role;  in cdns3_hw_role_state_machine()
210 	 * Role change state machine  in cdns3_hw_role_state_machine()
212 	 * Previous state: cdns->role  in cdns3_hw_role_state_machine()
213 	 * Next state: role  in cdns3_hw_role_state_machine()
215 	role = cdns->role;  in cdns3_hw_role_state_machine()
217 	switch (role) {  in cdns3_hw_role_state_machine()
224 			role = USB_ROLE_HOST;  in cdns3_hw_role_state_machine()
226 			role = USB_ROLE_DEVICE;  in cdns3_hw_role_state_machine()
230 			role = USB_ROLE_NONE;  in cdns3_hw_role_state_machine()
234 			role = USB_ROLE_NONE;  in cdns3_hw_role_state_machine()
238 	dev_dbg(cdns->dev, "role %d -> %d\n", cdns->role, role);  in cdns3_hw_role_state_machine()
240 	return role;  in cdns3_hw_role_state_machine()
283 	/* Depends on role switch class */  in cdns3_hw_role_switch()
289 	current_role = cdns->role;  in cdns3_hw_role_switch()
298 	dev_dbg(cdns->dev, "Switching role %d -> %d", current_role, real_role);  in cdns3_hw_role_switch()
302 		/* Back to current role */  in cdns3_hw_role_switch()
316  * cdsn3_role_get - get current role of controller.
318  * @sw: pointer to USB role switch structure
320  * Returns role
326 	return cdns->role;  in cdns3_role_get()
330  * cdns3_role_set - set current role of controller.
332  * @sw: pointer to USB role switch structure
333  * @role: the previous role
335  * - Role switch for dual-role devices
338 static int cdns3_role_set(struct usb_role_switch *sw, enum usb_role role)  in cdns3_role_set()  argument
345 	if (cdns->role == role)  in cdns3_role_set()
349 		switch (role) {  in cdns3_role_set()
359 		switch (role) {  in cdns3_role_set()
369 	ret = cdns3_role_start(cdns, role);  in cdns3_role_set()
371 		dev_err(cdns->dev, "set role %d has failed\n", role);  in cdns3_role_set()
413 		if ((cdns->role == USB_ROLE_HOST) && cdns->host_dev)  in cdns3_wakeup_irq()
531 	if (device_property_read_bool(dev, "usb-role-switch")) {  in cdns3_probe()
543 			dev_warn(dev, "Unable to register Role Switch\n");  in cdns3_probe()
674 	if (cdns->roles[cdns->role]->resume && !PMSG_IS_AUTO(msg))  in cdns3_controller_resume()
675 		cdns->roles[cdns->role]->resume(cdns, false);  in cdns3_controller_resume()
707 	if (cdns->roles[cdns->role]->suspend) {  in cdns3_suspend()
709 		cdns->roles[cdns->role]->suspend(cdns, false);  in cdns3_suspend()