54 static int onboard_hub_power_on(struct onboard_hub *hub)  in onboard_hub_power_on()  argument
58 	err = regulator_enable(hub->vdd);  in onboard_hub_power_on()
60 		dev_err(hub->dev, "failed to enable regulator: %d\n", err);  in onboard_hub_power_on()
64 	fsleep(hub->pdata->reset_us);  in onboard_hub_power_on()
65 	gpiod_set_value_cansleep(hub->reset_gpio, 0);  in onboard_hub_power_on()
67 	hub->is_powered_on = true;  in onboard_hub_power_on()
72 static int onboard_hub_power_off(struct onboard_hub *hub)  in onboard_hub_power_off()  argument
76 	gpiod_set_value_cansleep(hub->reset_gpio, 1);  in onboard_hub_power_off()
78 	err = regulator_disable(hub->vdd);  in onboard_hub_power_off()
80 		dev_err(hub->dev, "failed to disable regulator: %d\n", err);  in onboard_hub_power_off()
84 	hub->is_powered_on = false;  in onboard_hub_power_off()
91 	struct onboard_hub *hub = dev_get_drvdata(dev);  in onboard_hub_suspend()  local
95 	if (hub->always_powered_in_suspend)  in onboard_hub_suspend()
98 	mutex_lock(&hub->lock);  in onboard_hub_suspend()
100 	list_for_each_entry(node, &hub->udev_list, list) {  in onboard_hub_suspend()
110 	mutex_unlock(&hub->lock);  in onboard_hub_suspend()
115 	return onboard_hub_power_off(hub);  in onboard_hub_suspend()
120 	struct onboard_hub *hub = dev_get_drvdata(dev);  in onboard_hub_resume()  local
122 	if (hub->is_powered_on)  in onboard_hub_resume()
125 	return onboard_hub_power_on(hub);  in onboard_hub_resume()
133 static int onboard_hub_add_usbdev(struct onboard_hub *hub, struct usb_device *udev)  in onboard_hub_add_usbdev()  argument
139 	mutex_lock(&hub->lock);  in onboard_hub_add_usbdev()
141 	if (hub->going_away) {  in onboard_hub_add_usbdev()
154 	list_add(&node->list, &hub->udev_list);  in onboard_hub_add_usbdev()
156 	mutex_unlock(&hub->lock);  in onboard_hub_add_usbdev()
159 	WARN_ON(sysfs_create_link(&hub->dev->kobj, &udev->dev.kobj, link_name));  in onboard_hub_add_usbdev()
164 	mutex_unlock(&hub->lock);  in onboard_hub_add_usbdev()
169 static void onboard_hub_remove_usbdev(struct onboard_hub *hub, const struct usb_device *udev)  in onboard_hub_remove_usbdev()  argument
175 	sysfs_remove_link(&hub->dev->kobj, link_name);  in onboard_hub_remove_usbdev()
177 	mutex_lock(&hub->lock);  in onboard_hub_remove_usbdev()
179 	list_for_each_entry(node, &hub->udev_list, list) {  in onboard_hub_remove_usbdev()
187 	mutex_unlock(&hub->lock);  in onboard_hub_remove_usbdev()
193 	const struct onboard_hub *hub = dev_get_drvdata(dev);  in always_powered_in_suspend_show()  local
195 	return sysfs_emit(buf, "%d\n", hub->always_powered_in_suspend);  in always_powered_in_suspend_show()
201 	struct onboard_hub *hub = dev_get_drvdata(dev);  in always_powered_in_suspend_store()  local
209 	hub->always_powered_in_suspend = val;  in always_powered_in_suspend_store()
234 	struct onboard_hub *hub;  in onboard_hub_probe()  local
237 	hub = devm_kzalloc(dev, sizeof(*hub), GFP_KERNEL);  in onboard_hub_probe()
238 	if (!hub)  in onboard_hub_probe()
245 	hub->pdata = of_id->data;  in onboard_hub_probe()
246 	if (!hub->pdata)  in onboard_hub_probe()
249 	hub->vdd = devm_regulator_get(dev, "vdd");  in onboard_hub_probe()
250 	if (IS_ERR(hub->vdd))  in onboard_hub_probe()
251 		return PTR_ERR(hub->vdd);  in onboard_hub_probe()
253 	hub->reset_gpio = devm_gpiod_get_optional(dev, "reset",  in onboard_hub_probe()
255 	if (IS_ERR(hub->reset_gpio))  in onboard_hub_probe()
256 		return dev_err_probe(dev, PTR_ERR(hub->reset_gpio), "failed to get reset GPIO\n");  in onboard_hub_probe()
258 	hub->dev = dev;  in onboard_hub_probe()
259 	mutex_init(&hub->lock);  in onboard_hub_probe()
260 	INIT_LIST_HEAD(&hub->udev_list);  in onboard_hub_probe()
262 	dev_set_drvdata(dev, hub);  in onboard_hub_probe()
264 	err = onboard_hub_power_on(hub);  in onboard_hub_probe()
283 	struct onboard_hub *hub = dev_get_drvdata(&pdev->dev);  in onboard_hub_remove()  local
287 	hub->going_away = true;  in onboard_hub_remove()
289 	mutex_lock(&hub->lock);  in onboard_hub_remove()
292 	while (!list_empty(&hub->udev_list)) {  in onboard_hub_remove()
293 		node = list_first_entry(&hub->udev_list, struct usbdev_node, list);  in onboard_hub_remove()
301 		mutex_unlock(&hub->lock);  in onboard_hub_remove()
304 		mutex_lock(&hub->lock);  in onboard_hub_remove()
307 	mutex_unlock(&hub->lock);  in onboard_hub_remove()
309 	return onboard_hub_power_off(hub);  in onboard_hub_remove()
344 	struct onboard_hub *hub;  in _find_onboard_hub()  local
361 	hub = dev_get_drvdata(&pdev->dev);  in _find_onboard_hub()
371 	if (!hub)  in _find_onboard_hub()
374 	return hub;  in _find_onboard_hub()
380 	struct onboard_hub *hub;  in onboard_hub_usbdev_probe()  local
387 	hub = _find_onboard_hub(dev);  in onboard_hub_usbdev_probe()
388 	if (IS_ERR(hub))  in onboard_hub_usbdev_probe()
389 		return PTR_ERR(hub);  in onboard_hub_usbdev_probe()
391 	dev_set_drvdata(dev, hub);  in onboard_hub_usbdev_probe()
393 	err = onboard_hub_add_usbdev(hub, udev);  in onboard_hub_usbdev_probe()
402 	struct onboard_hub *hub = dev_get_drvdata(&udev->dev);  in onboard_hub_usbdev_disconnect()  local
404 	onboard_hub_remove_usbdev(hub, udev);  in onboard_hub_usbdev_disconnect()