72 	struct tahvo_usb *tu = dev_get_drvdata(device);  in vbus_state_show()  local
73 	return sprintf(buf, "%s\n", tu->vbus_state ? "on" : "off");  in vbus_state_show()
77 static void check_vbus_state(struct tahvo_usb *tu)  in check_vbus_state()  argument
79 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in check_vbus_state()
84 		switch (tu->phy.otg->state) {  in check_vbus_state()
87 			if (tu->phy.otg->gadget)  in check_vbus_state()
88 				usb_gadget_vbus_connect(tu->phy.otg->gadget);  in check_vbus_state()
89 			tu->phy.otg->state = OTG_STATE_B_PERIPHERAL;  in check_vbus_state()
90 			usb_phy_set_event(&tu->phy, USB_EVENT_ENUMERATED);  in check_vbus_state()
97 			tu->phy.otg->state = OTG_STATE_A_HOST;  in check_vbus_state()
102 		dev_info(&tu->pt_dev->dev, "USB cable connected\n");  in check_vbus_state()
104 		switch (tu->phy.otg->state) {  in check_vbus_state()
106 			if (tu->phy.otg->gadget)  in check_vbus_state()
107 				usb_gadget_vbus_disconnect(tu->phy.otg->gadget);  in check_vbus_state()
108 			tu->phy.otg->state = OTG_STATE_B_IDLE;  in check_vbus_state()
109 			usb_phy_set_event(&tu->phy, USB_EVENT_NONE);  in check_vbus_state()
112 			tu->phy.otg->state = OTG_STATE_A_IDLE;  in check_vbus_state()
117 		dev_info(&tu->pt_dev->dev, "USB cable disconnected\n");  in check_vbus_state()
120 	prev_state = tu->vbus_state;  in check_vbus_state()
121 	tu->vbus_state = reg & TAHVO_STAT_VBUS;  in check_vbus_state()
122 	if (prev_state != tu->vbus_state) {  in check_vbus_state()
123 		extcon_set_cable_state(&tu->extcon, "USB", tu->vbus_state);  in check_vbus_state()
124 		sysfs_notify(&tu->pt_dev->dev.kobj, NULL, "vbus_state");  in check_vbus_state()
128 static void tahvo_usb_become_host(struct tahvo_usb *tu)  in tahvo_usb_become_host()  argument
130 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in tahvo_usb_become_host()
132 	extcon_set_cable_state(&tu->extcon, "USB-HOST", true);  in tahvo_usb_become_host()
137 	tu->phy.otg->state = OTG_STATE_A_IDLE;  in tahvo_usb_become_host()
139 	check_vbus_state(tu);  in tahvo_usb_become_host()
142 static void tahvo_usb_stop_host(struct tahvo_usb *tu)  in tahvo_usb_stop_host()  argument
144 	tu->phy.otg->state = OTG_STATE_A_IDLE;  in tahvo_usb_stop_host()
147 static void tahvo_usb_become_peripheral(struct tahvo_usb *tu)  in tahvo_usb_become_peripheral()  argument
149 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in tahvo_usb_become_peripheral()
151 	extcon_set_cable_state(&tu->extcon, "USB-HOST", false);  in tahvo_usb_become_peripheral()
156 	tu->phy.otg->state = OTG_STATE_B_IDLE;  in tahvo_usb_become_peripheral()
158 	check_vbus_state(tu);  in tahvo_usb_become_peripheral()
161 static void tahvo_usb_stop_peripheral(struct tahvo_usb *tu)  in tahvo_usb_stop_peripheral()  argument
163 	if (tu->phy.otg->gadget)  in tahvo_usb_stop_peripheral()
164 		usb_gadget_vbus_disconnect(tu->phy.otg->gadget);  in tahvo_usb_stop_peripheral()
165 	tu->phy.otg->state = OTG_STATE_B_IDLE;  in tahvo_usb_stop_peripheral()
168 static void tahvo_usb_power_off(struct tahvo_usb *tu)  in tahvo_usb_power_off()  argument
170 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in tahvo_usb_power_off()
173 	if (tu->phy.otg->gadget)  in tahvo_usb_power_off()
174 		usb_gadget_vbus_disconnect(tu->phy.otg->gadget);  in tahvo_usb_power_off()
178 	tu->phy.otg->state = OTG_STATE_UNDEFINED;  in tahvo_usb_power_off()
183 	struct tahvo_usb *tu = container_of(dev, struct tahvo_usb, phy);  in tahvo_usb_set_suspend()  local
184 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in tahvo_usb_set_suspend()
187 	dev_dbg(&tu->pt_dev->dev, "%s\n", __func__);  in tahvo_usb_set_suspend()
201 	struct tahvo_usb *tu = container_of(otg->usb_phy, struct tahvo_usb,  in tahvo_usb_set_host()  local
204 	dev_dbg(&tu->pt_dev->dev, "%s %p\n", __func__, host);  in tahvo_usb_set_host()
206 	mutex_lock(&tu->serialize);  in tahvo_usb_set_host()
209 		if (tu->tahvo_mode == TAHVO_MODE_HOST)  in tahvo_usb_set_host()
210 			tahvo_usb_power_off(tu);  in tahvo_usb_set_host()
212 		mutex_unlock(&tu->serialize);  in tahvo_usb_set_host()
216 	if (tu->tahvo_mode == TAHVO_MODE_HOST) {  in tahvo_usb_set_host()
218 		tahvo_usb_become_host(tu);  in tahvo_usb_set_host()
223 	mutex_unlock(&tu->serialize);  in tahvo_usb_set_host()
231 	struct tahvo_usb *tu = container_of(otg->usb_phy, struct tahvo_usb,  in tahvo_usb_set_peripheral()  local
234 	dev_dbg(&tu->pt_dev->dev, "%s %p\n", __func__, gadget);  in tahvo_usb_set_peripheral()
236 	mutex_lock(&tu->serialize);  in tahvo_usb_set_peripheral()
239 		if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL)  in tahvo_usb_set_peripheral()
240 			tahvo_usb_power_off(tu);  in tahvo_usb_set_peripheral()
241 		tu->phy.otg->gadget = NULL;  in tahvo_usb_set_peripheral()
242 		mutex_unlock(&tu->serialize);  in tahvo_usb_set_peripheral()
246 	tu->phy.otg->gadget = gadget;  in tahvo_usb_set_peripheral()
247 	if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL)  in tahvo_usb_set_peripheral()
248 		tahvo_usb_become_peripheral(tu);  in tahvo_usb_set_peripheral()
250 	mutex_unlock(&tu->serialize);  in tahvo_usb_set_peripheral()
257 	struct tahvo_usb *tu = _tu;  in tahvo_usb_vbus_interrupt()  local
259 	mutex_lock(&tu->serialize);  in tahvo_usb_vbus_interrupt()
260 	check_vbus_state(tu);  in tahvo_usb_vbus_interrupt()
261 	mutex_unlock(&tu->serialize);  in tahvo_usb_vbus_interrupt()
269 	struct tahvo_usb *tu = dev_get_drvdata(device);  in otg_mode_show()  local
271 	switch (tu->tahvo_mode) {  in otg_mode_show()
285 	struct tahvo_usb *tu = dev_get_drvdata(device);  in otg_mode_store()  local
288 	mutex_lock(&tu->serialize);  in otg_mode_store()
290 		if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL)  in otg_mode_store()
291 			tahvo_usb_stop_peripheral(tu);  in otg_mode_store()
292 		tu->tahvo_mode = TAHVO_MODE_HOST;  in otg_mode_store()
293 		if (tu->phy.otg->host) {  in otg_mode_store()
295 			tahvo_usb_become_host(tu);  in otg_mode_store()
298 			tahvo_usb_power_off(tu);  in otg_mode_store()
302 		if (tu->tahvo_mode == TAHVO_MODE_HOST)  in otg_mode_store()
303 			tahvo_usb_stop_host(tu);  in otg_mode_store()
304 		tu->tahvo_mode = TAHVO_MODE_PERIPHERAL;  in otg_mode_store()
305 		if (tu->phy.otg->gadget) {  in otg_mode_store()
307 			tahvo_usb_become_peripheral(tu);  in otg_mode_store()
310 			tahvo_usb_power_off(tu);  in otg_mode_store()
316 	mutex_unlock(&tu->serialize);  in otg_mode_store()
335 	struct tahvo_usb *tu;  in tahvo_usb_probe()  local
338 	tu = devm_kzalloc(&pdev->dev, sizeof(*tu), GFP_KERNEL);  in tahvo_usb_probe()
339 	if (!tu)  in tahvo_usb_probe()
342 	tu->phy.otg = devm_kzalloc(&pdev->dev, sizeof(*tu->phy.otg),  in tahvo_usb_probe()
344 	if (!tu->phy.otg)  in tahvo_usb_probe()
347 	tu->pt_dev = pdev;  in tahvo_usb_probe()
351 	tu->tahvo_mode = TAHVO_MODE_HOST;  in tahvo_usb_probe()
353 	tu->tahvo_mode = TAHVO_MODE_PERIPHERAL;  in tahvo_usb_probe()
356 	mutex_init(&tu->serialize);  in tahvo_usb_probe()
358 	tu->ick = devm_clk_get(&pdev->dev, "usb_l4_ick");  in tahvo_usb_probe()
359 	if (!IS_ERR(tu->ick))  in tahvo_usb_probe()
360 		clk_enable(tu->ick);  in tahvo_usb_probe()
365 	tu->vbus_state = retu_read(rdev, TAHVO_REG_IDSR) & TAHVO_STAT_VBUS;  in tahvo_usb_probe()
367 	tu->extcon.name = DRIVER_NAME;  in tahvo_usb_probe()
368 	tu->extcon.supported_cable = tahvo_cable;  in tahvo_usb_probe()
369 	tu->extcon.dev.parent = &pdev->dev;  in tahvo_usb_probe()
371 	ret = extcon_dev_register(&tu->extcon);  in tahvo_usb_probe()
379 	extcon_set_cable_state(&tu->extcon, "USB-HOST",  in tahvo_usb_probe()
380 			       tu->tahvo_mode == TAHVO_MODE_HOST);  in tahvo_usb_probe()
381 	extcon_set_cable_state(&tu->extcon, "USB", tu->vbus_state);  in tahvo_usb_probe()
384 	tahvo_usb_power_off(tu);  in tahvo_usb_probe()
385 	tu->phy.dev = &pdev->dev;  in tahvo_usb_probe()
386 	tu->phy.otg->state = OTG_STATE_UNDEFINED;  in tahvo_usb_probe()
387 	tu->phy.label = DRIVER_NAME;  in tahvo_usb_probe()
388 	tu->phy.set_suspend = tahvo_usb_set_suspend;  in tahvo_usb_probe()
390 	tu->phy.otg->usb_phy = &tu->phy;  in tahvo_usb_probe()
391 	tu->phy.otg->set_host = tahvo_usb_set_host;  in tahvo_usb_probe()
392 	tu->phy.otg->set_peripheral = tahvo_usb_set_peripheral;  in tahvo_usb_probe()
394 	ret = usb_add_phy(&tu->phy, USB_PHY_TYPE_USB2);  in tahvo_usb_probe()
401 	dev_set_drvdata(&pdev->dev, tu);  in tahvo_usb_probe()
403 	tu->irq = platform_get_irq(pdev, 0);  in tahvo_usb_probe()
404 	ret = request_threaded_irq(tu->irq, NULL, tahvo_usb_vbus_interrupt,  in tahvo_usb_probe()
406 				   "tahvo-vbus", tu);  in tahvo_usb_probe()
423 	free_irq(tu->irq, tu);  in tahvo_usb_probe()
425 	usb_remove_phy(&tu->phy);  in tahvo_usb_probe()
427 	extcon_dev_unregister(&tu->extcon);  in tahvo_usb_probe()
429 	if (!IS_ERR(tu->ick))  in tahvo_usb_probe()
430 		clk_disable(tu->ick);  in tahvo_usb_probe()
437 	struct tahvo_usb *tu = platform_get_drvdata(pdev);  in tahvo_usb_remove()  local
440 	free_irq(tu->irq, tu);  in tahvo_usb_remove()
441 	usb_remove_phy(&tu->phy);  in tahvo_usb_remove()
442 	extcon_dev_unregister(&tu->extcon);  in tahvo_usb_remove()
443 	if (!IS_ERR(tu->ick))  in tahvo_usb_remove()
444 		clk_disable(tu->ick);  in tahvo_usb_remove()