73 	struct tahvo_usb *tu = dev_get_drvdata(device);  in vbus_state_show()  local
74 	return sprintf(buf, "%s\n", tu->vbus_state ? "on" : "off");  in vbus_state_show()
78 static void check_vbus_state(struct tahvo_usb *tu)  in check_vbus_state()  argument
80 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in check_vbus_state()
85 		switch (tu->phy.otg->state) {  in check_vbus_state()
88 			if (tu->phy.otg->gadget)  in check_vbus_state()
89 				usb_gadget_vbus_connect(tu->phy.otg->gadget);  in check_vbus_state()
90 			tu->phy.otg->state = OTG_STATE_B_PERIPHERAL;  in check_vbus_state()
91 			usb_phy_set_event(&tu->phy, USB_EVENT_ENUMERATED);  in check_vbus_state()
98 			tu->phy.otg->state = OTG_STATE_A_HOST;  in check_vbus_state()
103 		dev_info(&tu->pt_dev->dev, "USB cable connected\n");  in check_vbus_state()
105 		switch (tu->phy.otg->state) {  in check_vbus_state()
107 			if (tu->phy.otg->gadget)  in check_vbus_state()
108 				usb_gadget_vbus_disconnect(tu->phy.otg->gadget);  in check_vbus_state()
109 			tu->phy.otg->state = OTG_STATE_B_IDLE;  in check_vbus_state()
110 			usb_phy_set_event(&tu->phy, USB_EVENT_NONE);  in check_vbus_state()
113 			tu->phy.otg->state = OTG_STATE_A_IDLE;  in check_vbus_state()
118 		dev_info(&tu->pt_dev->dev, "USB cable disconnected\n");  in check_vbus_state()
121 	prev_state = tu->vbus_state;  in check_vbus_state()
122 	tu->vbus_state = reg & TAHVO_STAT_VBUS;  in check_vbus_state()
123 	if (prev_state != tu->vbus_state) {  in check_vbus_state()
124 		extcon_set_cable_state_(tu->extcon, EXTCON_USB, tu->vbus_state);  in check_vbus_state()
125 		sysfs_notify(&tu->pt_dev->dev.kobj, NULL, "vbus_state");  in check_vbus_state()
129 static void tahvo_usb_become_host(struct tahvo_usb *tu)  in tahvo_usb_become_host()  argument
131 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in tahvo_usb_become_host()
133 	extcon_set_cable_state_(tu->extcon, EXTCON_USB_HOST, true);  in tahvo_usb_become_host()
138 	tu->phy.otg->state = OTG_STATE_A_IDLE;  in tahvo_usb_become_host()
140 	check_vbus_state(tu);  in tahvo_usb_become_host()
143 static void tahvo_usb_stop_host(struct tahvo_usb *tu)  in tahvo_usb_stop_host()  argument
145 	tu->phy.otg->state = OTG_STATE_A_IDLE;  in tahvo_usb_stop_host()
148 static void tahvo_usb_become_peripheral(struct tahvo_usb *tu)  in tahvo_usb_become_peripheral()  argument
150 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in tahvo_usb_become_peripheral()
152 	extcon_set_cable_state_(tu->extcon, EXTCON_USB_HOST, false);  in tahvo_usb_become_peripheral()
157 	tu->phy.otg->state = OTG_STATE_B_IDLE;  in tahvo_usb_become_peripheral()
159 	check_vbus_state(tu);  in tahvo_usb_become_peripheral()
162 static void tahvo_usb_stop_peripheral(struct tahvo_usb *tu)  in tahvo_usb_stop_peripheral()  argument
164 	if (tu->phy.otg->gadget)  in tahvo_usb_stop_peripheral()
165 		usb_gadget_vbus_disconnect(tu->phy.otg->gadget);  in tahvo_usb_stop_peripheral()
166 	tu->phy.otg->state = OTG_STATE_B_IDLE;  in tahvo_usb_stop_peripheral()
169 static void tahvo_usb_power_off(struct tahvo_usb *tu)  in tahvo_usb_power_off()  argument
171 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in tahvo_usb_power_off()
174 	if (tu->phy.otg->gadget)  in tahvo_usb_power_off()
175 		usb_gadget_vbus_disconnect(tu->phy.otg->gadget);  in tahvo_usb_power_off()
179 	tu->phy.otg->state = OTG_STATE_UNDEFINED;  in tahvo_usb_power_off()
184 	struct tahvo_usb *tu = container_of(dev, struct tahvo_usb, phy);  in tahvo_usb_set_suspend()  local
185 	struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent);  in tahvo_usb_set_suspend()
188 	dev_dbg(&tu->pt_dev->dev, "%s\n", __func__);  in tahvo_usb_set_suspend()
202 	struct tahvo_usb *tu = container_of(otg->usb_phy, struct tahvo_usb,  in tahvo_usb_set_host()  local
205 	dev_dbg(&tu->pt_dev->dev, "%s %p\n", __func__, host);  in tahvo_usb_set_host()
207 	mutex_lock(&tu->serialize);  in tahvo_usb_set_host()
210 		if (tu->tahvo_mode == TAHVO_MODE_HOST)  in tahvo_usb_set_host()
211 			tahvo_usb_power_off(tu);  in tahvo_usb_set_host()
213 		mutex_unlock(&tu->serialize);  in tahvo_usb_set_host()
217 	if (tu->tahvo_mode == TAHVO_MODE_HOST) {  in tahvo_usb_set_host()
219 		tahvo_usb_become_host(tu);  in tahvo_usb_set_host()
224 	mutex_unlock(&tu->serialize);  in tahvo_usb_set_host()
232 	struct tahvo_usb *tu = container_of(otg->usb_phy, struct tahvo_usb,  in tahvo_usb_set_peripheral()  local
235 	dev_dbg(&tu->pt_dev->dev, "%s %p\n", __func__, gadget);  in tahvo_usb_set_peripheral()
237 	mutex_lock(&tu->serialize);  in tahvo_usb_set_peripheral()
240 		if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL)  in tahvo_usb_set_peripheral()
241 			tahvo_usb_power_off(tu);  in tahvo_usb_set_peripheral()
242 		tu->phy.otg->gadget = NULL;  in tahvo_usb_set_peripheral()
243 		mutex_unlock(&tu->serialize);  in tahvo_usb_set_peripheral()
247 	tu->phy.otg->gadget = gadget;  in tahvo_usb_set_peripheral()
248 	if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL)  in tahvo_usb_set_peripheral()
249 		tahvo_usb_become_peripheral(tu);  in tahvo_usb_set_peripheral()
251 	mutex_unlock(&tu->serialize);  in tahvo_usb_set_peripheral()
258 	struct tahvo_usb *tu = _tu;  in tahvo_usb_vbus_interrupt()  local
260 	mutex_lock(&tu->serialize);  in tahvo_usb_vbus_interrupt()
261 	check_vbus_state(tu);  in tahvo_usb_vbus_interrupt()
262 	mutex_unlock(&tu->serialize);  in tahvo_usb_vbus_interrupt()
270 	struct tahvo_usb *tu = dev_get_drvdata(device);  in otg_mode_show()  local
272 	switch (tu->tahvo_mode) {  in otg_mode_show()
286 	struct tahvo_usb *tu = dev_get_drvdata(device);  in otg_mode_store()  local
289 	mutex_lock(&tu->serialize);  in otg_mode_store()
291 		if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL)  in otg_mode_store()
292 			tahvo_usb_stop_peripheral(tu);  in otg_mode_store()
293 		tu->tahvo_mode = TAHVO_MODE_HOST;  in otg_mode_store()
294 		if (tu->phy.otg->host) {  in otg_mode_store()
296 			tahvo_usb_become_host(tu);  in otg_mode_store()
299 			tahvo_usb_power_off(tu);  in otg_mode_store()
303 		if (tu->tahvo_mode == TAHVO_MODE_HOST)  in otg_mode_store()
304 			tahvo_usb_stop_host(tu);  in otg_mode_store()
305 		tu->tahvo_mode = TAHVO_MODE_PERIPHERAL;  in otg_mode_store()
306 		if (tu->phy.otg->gadget) {  in otg_mode_store()
308 			tahvo_usb_become_peripheral(tu);  in otg_mode_store()
311 			tahvo_usb_power_off(tu);  in otg_mode_store()
317 	mutex_unlock(&tu->serialize);  in otg_mode_store()
336 	struct tahvo_usb *tu;  in tahvo_usb_probe()  local
339 	tu = devm_kzalloc(&pdev->dev, sizeof(*tu), GFP_KERNEL);  in tahvo_usb_probe()
340 	if (!tu)  in tahvo_usb_probe()
343 	tu->phy.otg = devm_kzalloc(&pdev->dev, sizeof(*tu->phy.otg),  in tahvo_usb_probe()
345 	if (!tu->phy.otg)  in tahvo_usb_probe()
348 	tu->pt_dev = pdev;  in tahvo_usb_probe()
352 	tu->tahvo_mode = TAHVO_MODE_HOST;  in tahvo_usb_probe()
354 	tu->tahvo_mode = TAHVO_MODE_PERIPHERAL;  in tahvo_usb_probe()
357 	mutex_init(&tu->serialize);  in tahvo_usb_probe()
359 	tu->ick = devm_clk_get(&pdev->dev, "usb_l4_ick");  in tahvo_usb_probe()
360 	if (!IS_ERR(tu->ick))  in tahvo_usb_probe()
361 		clk_enable(tu->ick);  in tahvo_usb_probe()
366 	tu->vbus_state = retu_read(rdev, TAHVO_REG_IDSR) & TAHVO_STAT_VBUS;  in tahvo_usb_probe()
368 	tu->extcon = devm_extcon_dev_allocate(&pdev->dev, tahvo_cable);  in tahvo_usb_probe()
369 	if (IS_ERR(tu->extcon)) {  in tahvo_usb_probe()
374 	ret = devm_extcon_dev_register(&pdev->dev, tu->extcon);  in tahvo_usb_probe()
382 	extcon_set_cable_state_(tu->extcon, EXTCON_USB_HOST,  in tahvo_usb_probe()
383 			       tu->tahvo_mode == TAHVO_MODE_HOST);  in tahvo_usb_probe()
384 	extcon_set_cable_state_(tu->extcon, EXTCON_USB, tu->vbus_state);  in tahvo_usb_probe()
387 	tahvo_usb_power_off(tu);  in tahvo_usb_probe()
388 	tu->phy.dev = &pdev->dev;  in tahvo_usb_probe()
389 	tu->phy.otg->state = OTG_STATE_UNDEFINED;  in tahvo_usb_probe()
390 	tu->phy.label = DRIVER_NAME;  in tahvo_usb_probe()
391 	tu->phy.set_suspend = tahvo_usb_set_suspend;  in tahvo_usb_probe()
393 	tu->phy.otg->usb_phy = &tu->phy;  in tahvo_usb_probe()
394 	tu->phy.otg->set_host = tahvo_usb_set_host;  in tahvo_usb_probe()
395 	tu->phy.otg->set_peripheral = tahvo_usb_set_peripheral;  in tahvo_usb_probe()
397 	ret = usb_add_phy(&tu->phy, USB_PHY_TYPE_USB2);  in tahvo_usb_probe()
404 	dev_set_drvdata(&pdev->dev, tu);  in tahvo_usb_probe()
406 	tu->irq = platform_get_irq(pdev, 0);  in tahvo_usb_probe()
407 	ret = request_threaded_irq(tu->irq, NULL, tahvo_usb_vbus_interrupt,  in tahvo_usb_probe()
409 				   "tahvo-vbus", tu);  in tahvo_usb_probe()
426 	free_irq(tu->irq, tu);  in tahvo_usb_probe()
428 	usb_remove_phy(&tu->phy);  in tahvo_usb_probe()
430 	if (!IS_ERR(tu->ick))  in tahvo_usb_probe()
431 		clk_disable(tu->ick);  in tahvo_usb_probe()
438 	struct tahvo_usb *tu = platform_get_drvdata(pdev);  in tahvo_usb_remove()  local
441 	free_irq(tu->irq, tu);  in tahvo_usb_remove()
442 	usb_remove_phy(&tu->phy);  in tahvo_usb_remove()
443 	if (!IS_ERR(tu->ick))  in tahvo_usb_remove()
444 		clk_disable(tu->ick);  in tahvo_usb_remove()