65 	struct tahvo_usb *tu = dev_get_drvdata(device);  in vbus_show()  local
66 	return sprintf(buf, "%s\n", tu->vbus_state ? "on" : "off");  in vbus_show()
70 static void check_vbus_state(struct tahvo_usb *tu)  in check_vbus_state()  argument
72 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in check_vbus_state()
77 		switch (tu->phy.otg->state) {  in check_vbus_state()
80 			if (tu->phy.otg->gadget)  in check_vbus_state()
81 				usb_gadget_vbus_connect(tu->phy.otg->gadget);  in check_vbus_state()
82 			tu->phy.otg->state = OTG_STATE_B_PERIPHERAL;  in check_vbus_state()
83 			usb_phy_set_event(&tu->phy, USB_EVENT_ENUMERATED);  in check_vbus_state()
90 			tu->phy.otg->state = OTG_STATE_A_HOST;  in check_vbus_state()
95 		dev_info(&tu->pt_dev->dev, "USB cable connected\n");  in check_vbus_state()
97 		switch (tu->phy.otg->state) {  in check_vbus_state()
99 			if (tu->phy.otg->gadget)  in check_vbus_state()
100 				usb_gadget_vbus_disconnect(tu->phy.otg->gadget);  in check_vbus_state()
101 			tu->phy.otg->state = OTG_STATE_B_IDLE;  in check_vbus_state()
102 			usb_phy_set_event(&tu->phy, USB_EVENT_NONE);  in check_vbus_state()
105 			tu->phy.otg->state = OTG_STATE_A_IDLE;  in check_vbus_state()
110 		dev_info(&tu->pt_dev->dev, "USB cable disconnected\n");  in check_vbus_state()
113 	prev_state = tu->vbus_state;  in check_vbus_state()
114 	tu->vbus_state = reg & TAHVO_STAT_VBUS;  in check_vbus_state()
115 	if (prev_state != tu->vbus_state) {  in check_vbus_state()
116 		extcon_set_state_sync(tu->extcon, EXTCON_USB, tu->vbus_state);  in check_vbus_state()
117 		sysfs_notify(&tu->pt_dev->dev.kobj, NULL, "vbus_state");  in check_vbus_state()
121 static void tahvo_usb_become_host(struct tahvo_usb *tu)  in tahvo_usb_become_host()  argument
123 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in tahvo_usb_become_host()
125 	extcon_set_state_sync(tu->extcon, EXTCON_USB_HOST, true);  in tahvo_usb_become_host()
130 	tu->phy.otg->state = OTG_STATE_A_IDLE;  in tahvo_usb_become_host()
132 	check_vbus_state(tu);  in tahvo_usb_become_host()
135 static void tahvo_usb_stop_host(struct tahvo_usb *tu)  in tahvo_usb_stop_host()  argument
137 	tu->phy.otg->state = OTG_STATE_A_IDLE;  in tahvo_usb_stop_host()
140 static void tahvo_usb_become_peripheral(struct tahvo_usb *tu)  in tahvo_usb_become_peripheral()  argument
142 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in tahvo_usb_become_peripheral()
144 	extcon_set_state_sync(tu->extcon, EXTCON_USB_HOST, false);  in tahvo_usb_become_peripheral()
149 	tu->phy.otg->state = OTG_STATE_B_IDLE;  in tahvo_usb_become_peripheral()
151 	check_vbus_state(tu);  in tahvo_usb_become_peripheral()
154 static void tahvo_usb_stop_peripheral(struct tahvo_usb *tu)  in tahvo_usb_stop_peripheral()  argument
156 	if (tu->phy.otg->gadget)  in tahvo_usb_stop_peripheral()
157 		usb_gadget_vbus_disconnect(tu->phy.otg->gadget);  in tahvo_usb_stop_peripheral()
158 	tu->phy.otg->state = OTG_STATE_B_IDLE;  in tahvo_usb_stop_peripheral()
161 static void tahvo_usb_power_off(struct tahvo_usb *tu)  in tahvo_usb_power_off()  argument
163 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in tahvo_usb_power_off()
166 	if (tu->phy.otg->gadget)  in tahvo_usb_power_off()
167 		usb_gadget_vbus_disconnect(tu->phy.otg->gadget);  in tahvo_usb_power_off()
171 	tu->phy.otg->state = OTG_STATE_UNDEFINED;  in tahvo_usb_power_off()
176 	struct tahvo_usb *tu = container_of(dev, struct tahvo_usb, phy);  in tahvo_usb_set_suspend()  local
177 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in tahvo_usb_set_suspend()
180 	dev_dbg(&tu->pt_dev->dev, "%s\n", __func__);  in tahvo_usb_set_suspend()
194 	struct tahvo_usb *tu = container_of(otg->usb_phy, struct tahvo_usb,  in tahvo_usb_set_host()  local
197 	mutex_lock(&tu->serialize);  in tahvo_usb_set_host()
200 		if (tu->tahvo_mode == TAHVO_MODE_HOST)  in tahvo_usb_set_host()
201 			tahvo_usb_power_off(tu);  in tahvo_usb_set_host()
203 		mutex_unlock(&tu->serialize);  in tahvo_usb_set_host()
207 	if (tu->tahvo_mode == TAHVO_MODE_HOST) {  in tahvo_usb_set_host()
209 		tahvo_usb_become_host(tu);  in tahvo_usb_set_host()
214 	mutex_unlock(&tu->serialize);  in tahvo_usb_set_host()
222 	struct tahvo_usb *tu = container_of(otg->usb_phy, struct tahvo_usb,  in tahvo_usb_set_peripheral()  local
225 	mutex_lock(&tu->serialize);  in tahvo_usb_set_peripheral()
228 		if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL)  in tahvo_usb_set_peripheral()
229 			tahvo_usb_power_off(tu);  in tahvo_usb_set_peripheral()
230 		tu->phy.otg->gadget = NULL;  in tahvo_usb_set_peripheral()
231 		mutex_unlock(&tu->serialize);  in tahvo_usb_set_peripheral()
235 	tu->phy.otg->gadget = gadget;  in tahvo_usb_set_peripheral()
236 	if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL)  in tahvo_usb_set_peripheral()
237 		tahvo_usb_become_peripheral(tu);  in tahvo_usb_set_peripheral()
239 	mutex_unlock(&tu->serialize);  in tahvo_usb_set_peripheral()
246 	struct tahvo_usb *tu = _tu;  in tahvo_usb_vbus_interrupt()  local
248 	mutex_lock(&tu->serialize);  in tahvo_usb_vbus_interrupt()
249 	check_vbus_state(tu);  in tahvo_usb_vbus_interrupt()
250 	mutex_unlock(&tu->serialize);  in tahvo_usb_vbus_interrupt()
258 	struct tahvo_usb *tu = dev_get_drvdata(device);  in otg_mode_show()  local
260 	switch (tu->tahvo_mode) {  in otg_mode_show()
274 	struct tahvo_usb *tu = dev_get_drvdata(device);  in otg_mode_store()  local
277 	mutex_lock(&tu->serialize);  in otg_mode_store()
279 		if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL)  in otg_mode_store()
280 			tahvo_usb_stop_peripheral(tu);  in otg_mode_store()
281 		tu->tahvo_mode = TAHVO_MODE_HOST;  in otg_mode_store()
282 		if (tu->phy.otg->host) {  in otg_mode_store()
284 			tahvo_usb_become_host(tu);  in otg_mode_store()
287 			tahvo_usb_power_off(tu);  in otg_mode_store()
291 		if (tu->tahvo_mode == TAHVO_MODE_HOST)  in otg_mode_store()
292 			tahvo_usb_stop_host(tu);  in otg_mode_store()
293 		tu->tahvo_mode = TAHVO_MODE_PERIPHERAL;  in otg_mode_store()
294 		if (tu->phy.otg->gadget) {  in otg_mode_store()
296 			tahvo_usb_become_peripheral(tu);  in otg_mode_store()
299 			tahvo_usb_power_off(tu);  in otg_mode_store()
305 	mutex_unlock(&tu->serialize);  in otg_mode_store()
321 	struct tahvo_usb *tu;  in tahvo_usb_probe()  local
324 	tu = devm_kzalloc(&pdev->dev, sizeof(*tu), GFP_KERNEL);  in tahvo_usb_probe()
325 	if (!tu)  in tahvo_usb_probe()
328 	tu->phy.otg = devm_kzalloc(&pdev->dev, sizeof(*tu->phy.otg),  in tahvo_usb_probe()
330 	if (!tu->phy.otg)  in tahvo_usb_probe()
333 	tu->pt_dev = pdev;  in tahvo_usb_probe()
337 	tu->tahvo_mode = TAHVO_MODE_HOST;  in tahvo_usb_probe()
339 	tu->tahvo_mode = TAHVO_MODE_PERIPHERAL;  in tahvo_usb_probe()
342 	mutex_init(&tu->serialize);  in tahvo_usb_probe()
344 	tu->ick = devm_clk_get(&pdev->dev, "usb_l4_ick");  in tahvo_usb_probe()
345 	if (!IS_ERR(tu->ick))  in tahvo_usb_probe()
346 		clk_enable(tu->ick);  in tahvo_usb_probe()
351 	tu->vbus_state = retu_read(rdev, TAHVO_REG_IDSR) & TAHVO_STAT_VBUS;  in tahvo_usb_probe()
353 	tu->extcon = devm_extcon_dev_allocate(&pdev->dev, tahvo_cable);  in tahvo_usb_probe()
354 	if (IS_ERR(tu->extcon)) {  in tahvo_usb_probe()
356 		ret = PTR_ERR(tu->extcon);  in tahvo_usb_probe()
360 	ret = devm_extcon_dev_register(&pdev->dev, tu->extcon);  in tahvo_usb_probe()
368 	extcon_set_state_sync(tu->extcon, EXTCON_USB_HOST,  in tahvo_usb_probe()
369 			       tu->tahvo_mode == TAHVO_MODE_HOST);  in tahvo_usb_probe()
370 	extcon_set_state_sync(tu->extcon, EXTCON_USB, tu->vbus_state);  in tahvo_usb_probe()
373 	tahvo_usb_power_off(tu);  in tahvo_usb_probe()
374 	tu->phy.dev = &pdev->dev;  in tahvo_usb_probe()
375 	tu->phy.otg->state = OTG_STATE_UNDEFINED;  in tahvo_usb_probe()
376 	tu->phy.label = DRIVER_NAME;  in tahvo_usb_probe()
377 	tu->phy.set_suspend = tahvo_usb_set_suspend;  in tahvo_usb_probe()
379 	tu->phy.otg->usb_phy = &tu->phy;  in tahvo_usb_probe()
380 	tu->phy.otg->set_host = tahvo_usb_set_host;  in tahvo_usb_probe()
381 	tu->phy.otg->set_peripheral = tahvo_usb_set_peripheral;  in tahvo_usb_probe()
383 	ret = usb_add_phy(&tu->phy, USB_PHY_TYPE_USB2);  in tahvo_usb_probe()
390 	dev_set_drvdata(&pdev->dev, tu);  in tahvo_usb_probe()
392 	tu->irq = ret = platform_get_irq(pdev, 0);  in tahvo_usb_probe()
395 	ret = request_threaded_irq(tu->irq, NULL, tahvo_usb_vbus_interrupt,  in tahvo_usb_probe()
397 				   "tahvo-vbus", tu);  in tahvo_usb_probe()
407 	usb_remove_phy(&tu->phy);  in tahvo_usb_probe()
409 	if (!IS_ERR(tu->ick))  in tahvo_usb_probe()
410 		clk_disable(tu->ick);  in tahvo_usb_probe()
417 	struct tahvo_usb *tu = platform_get_drvdata(pdev);  in tahvo_usb_remove()  local
419 	free_irq(tu->irq, tu);  in tahvo_usb_remove()
420 	usb_remove_phy(&tu->phy);  in tahvo_usb_remove()
421 	if (!IS_ERR(tu->ick))  in tahvo_usb_remove()
422 		clk_disable(tu->ick);  in tahvo_usb_remove()