28 static int cdns3_idle_init(struct cdns3 *cdns);
32 	struct cdns3 cdns;  member
36 	struct cdns3 cdns;  member
40 struct cdns3_role_driver *cdns3_get_current_role_driver(struct cdns3 *cdns)  in cdns3_get_current_role_driver()  argument
42 	WARN_ON(!cdns->roles[cdns->role]);  in cdns3_get_current_role_driver()
43 	return cdns->roles[cdns->role];  in cdns3_get_current_role_driver()
46 static int cdns3_role_start(struct cdns3 *cdns, enum usb_role role)  in cdns3_role_start()  argument
53 	mutex_lock(&cdns->mutex);  in cdns3_role_start()
54 	cdns->role = role;  in cdns3_role_start()
55 	mutex_unlock(&cdns->mutex);  in cdns3_role_start()
57 	if (!cdns->roles[role])  in cdns3_role_start()
60 	if (cdns->roles[role]->state == CDNS3_ROLE_STATE_ACTIVE)  in cdns3_role_start()
63 	mutex_lock(&cdns->mutex);  in cdns3_role_start()
64 	ret = cdns->roles[role]->start(cdns);  in cdns3_role_start()
66 		cdns->roles[role]->state = CDNS3_ROLE_STATE_ACTIVE;  in cdns3_role_start()
67 	mutex_unlock(&cdns->mutex);  in cdns3_role_start()
72 static void cdns3_role_stop(struct cdns3 *cdns)  in cdns3_role_stop()  argument
74 	enum usb_role role = cdns->role;  in cdns3_role_stop()
79 	if (cdns->roles[role]->state == CDNS3_ROLE_STATE_INACTIVE)  in cdns3_role_stop()
82 	mutex_lock(&cdns->mutex);  in cdns3_role_stop()
83 	cdns->roles[role]->stop(cdns);  in cdns3_role_stop()
84 	cdns->roles[role]->state = CDNS3_ROLE_STATE_INACTIVE;  in cdns3_role_stop()
85 	mutex_unlock(&cdns->mutex);  in cdns3_role_stop()
88 static void cdns3_exit_roles(struct cdns3 *cdns)  in cdns3_exit_roles()  argument
90 	cdns3_role_stop(cdns);  in cdns3_exit_roles()
91 	cdns3_drd_exit(cdns);  in cdns3_exit_roles()
94 static enum usb_role cdsn3_hw_role_state_machine(struct cdns3 *cdns);
102 static int cdns3_core_init_role(struct cdns3 *cdns)  in cdns3_core_init_role()  argument
104 	struct udevice *dev = cdns->dev;  in cdns3_core_init_role()
110 	cdns->role = USB_ROLE_NONE;  in cdns3_core_init_role()
131 	best_dr_mode = cdns->dr_mode;  in cdns3_core_init_role()
133 	ret = cdns3_idle_init(cdns);  in cdns3_core_init_role()
138 		best_dr_mode = cdns->dr_mode;  in cdns3_core_init_role()
139 	} else if (cdns->dr_mode == USB_DR_MODE_OTG) {  in cdns3_core_init_role()
141 	} else if (cdns->dr_mode != dr_mode) {  in cdns3_core_init_role()
150 		ret = cdns3_host_init(cdns);  in cdns3_core_init_role()
161 		ret = cdns3_gadget_init(cdns);  in cdns3_core_init_role()
170 	cdns->dr_mode = dr_mode;  in cdns3_core_init_role()
172 	ret = cdns3_drd_update_mode(cdns);  in cdns3_core_init_role()
176 	if (cdns->dr_mode != USB_DR_MODE_OTG) {  in cdns3_core_init_role()
177 		ret = cdns3_hw_role_switch(cdns);  in cdns3_core_init_role()
184 	cdns3_exit_roles(cdns);  in cdns3_core_init_role()
194 static enum usb_role cdsn3_hw_role_state_machine(struct cdns3 *cdns)  in cdsn3_hw_role_state_machine()  argument
199 	if (cdns->dr_mode != USB_DR_MODE_OTG)  in cdsn3_hw_role_state_machine()
202 	id = cdns3_get_id(cdns);  in cdsn3_hw_role_state_machine()
203 	vbus = cdns3_get_vbus(cdns);  in cdsn3_hw_role_state_machine()
211 	role = cdns->role;  in cdsn3_hw_role_state_machine()
234 	dev_dbg(cdns->dev, "role %d -> %d\n", cdns->role, role);  in cdsn3_hw_role_state_machine()
239 	if (cdns3_is_host(cdns))  in cdsn3_hw_role_state_machine()
241 	if (cdns3_is_device(cdns))  in cdsn3_hw_role_state_machine()
247 static int cdns3_idle_role_start(struct cdns3 *cdns)  in cdns3_idle_role_start()  argument
252 static void cdns3_idle_role_stop(struct cdns3 *cdns)  in cdns3_idle_role_stop()  argument
255 	generic_phy_reset(&cdns->usb3_phy);  in cdns3_idle_role_stop()
258 static int cdns3_idle_init(struct cdns3 *cdns)  in cdns3_idle_init()  argument
262 	rdrv = devm_kzalloc(cdns->dev, sizeof(*rdrv), GFP_KERNEL);  in cdns3_idle_init()
273 	cdns->roles[USB_ROLE_NONE] = rdrv;  in cdns3_idle_init()
282 int cdns3_hw_role_switch(struct cdns3 *cdns)  in cdns3_hw_role_switch()  argument
288 	if (cdns->role_override)  in cdns3_hw_role_switch()
291 	current_role = cdns->role;  in cdns3_hw_role_switch()
292 	real_role = cdsn3_hw_role_state_machine(cdns);  in cdns3_hw_role_switch()
298 	cdns3_role_stop(cdns);  in cdns3_hw_role_switch()
300 	dev_dbg(cdns->dev, "Switching role %d -> %d", current_role, real_role);  in cdns3_hw_role_switch()
302 	ret = cdns3_role_start(cdns, real_role);  in cdns3_hw_role_switch()
305 		dev_err(cdns->dev, "set %d has failed, back to %d\n",  in cdns3_hw_role_switch()
307 		ret = cdns3_role_start(cdns, current_role);  in cdns3_hw_role_switch()
309 			dev_err(cdns->dev, "back to %d failed too\n",  in cdns3_hw_role_switch()
316 static int cdns3_probe(struct cdns3 *cdns)  in cdns3_probe()  argument
318 	struct udevice *dev = cdns->dev;  in cdns3_probe()
321 	cdns->xhci_regs = dev_remap_addr_name(dev, "xhci");  in cdns3_probe()
322 	if (!cdns->xhci_regs)  in cdns3_probe()
325 	cdns->dev_regs = dev_remap_addr_name(dev, "dev");  in cdns3_probe()
326 	if (!cdns->dev_regs)  in cdns3_probe()
329 	mutex_init(&cdns->mutex);  in cdns3_probe()
331 	ret = generic_phy_get_by_name(dev, "cdns3,usb2-phy", &cdns->usb2_phy);  in cdns3_probe()
335 	ret = generic_phy_init(&cdns->usb2_phy);  in cdns3_probe()
339 	ret = generic_phy_get_by_name(dev, "cdns3,usb3-phy", &cdns->usb3_phy);  in cdns3_probe()
343 	ret = generic_phy_init(&cdns->usb3_phy);  in cdns3_probe()
347 	ret = generic_phy_power_on(&cdns->usb2_phy);  in cdns3_probe()
351 	ret = generic_phy_power_on(&cdns->usb3_phy);  in cdns3_probe()
355 	ret = cdns3_drd_init(cdns);  in cdns3_probe()
359 	ret = cdns3_core_init_role(cdns);  in cdns3_probe()
368 static int cdns3_remove(struct cdns3 *cdns)  in cdns3_remove()  argument
370 	cdns3_exit_roles(cdns);  in cdns3_remove()
371 	generic_phy_power_off(&cdns->usb2_phy);  in cdns3_remove()
372 	generic_phy_power_off(&cdns->usb3_phy);  in cdns3_remove()
373 	generic_phy_exit(&cdns->usb2_phy);  in cdns3_remove()
374 	generic_phy_exit(&cdns->usb3_phy);  in cdns3_remove()
439 	struct cdns3 *cdns = &priv->cdns;  in cdns3_gadget_probe()  local
441 	cdns->dev = dev;  in cdns3_gadget_probe()
443 	return cdns3_probe(cdns);  in cdns3_gadget_probe()
449 	struct cdns3 *cdns = &priv->cdns;  in cdns3_gadget_remove()  local
451 	return cdns3_remove(cdns);  in cdns3_gadget_remove()
470 	struct cdns3 *cdns = &priv->cdns;  in cdns3_host_probe()  local
472 	cdns->dev = dev;  in cdns3_host_probe()
474 	return cdns3_probe(cdns);  in cdns3_host_probe()
480 	struct cdns3 *cdns = &priv->cdns;  in cdns3_host_remove()  local
482 	return cdns3_remove(cdns);  in cdns3_host_remove()