+static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work)
+{
+ struct sun4i_usb_phy_data *data =
+ container_of(work, struct sun4i_usb_phy_data, detect.work);
+ struct phy *phy0 = data->phys[0].phy;
+ int id_det, vbus_det, id_notify = 0, vbus_notify = 0;
+
+ id_det = gpiod_get_value_cansleep(data->id_det_gpio);
+ vbus_det = sun4i_usb_phy0_get_vbus_det(data);
+
+ mutex_lock(&phy0->mutex);
+
+ if (!data->phy0_init) {
+ mutex_unlock(&phy0->mutex);
+ return;
+ }
+
+ if (id_det != data->id_det) {
+ /*
+ * When a host cable (id == 0) gets plugged in on systems
+ * without vbus detection report vbus low for long enough for
+ * the musb-ip to end the current device session.
+ */
+ if (!sun4i_usb_phy0_have_vbus_det(data) && id_det == 0) {
+ sun4i_usb_phy0_set_vbus_detect(phy0, 0);
+ msleep(200);
+ sun4i_usb_phy0_set_vbus_detect(phy0, 1);
+ }
+ sun4i_usb_phy0_set_id_detect(phy0, id_det);
+ data->id_det = id_det;
+ id_notify = 1;
+ }
+
+ if (vbus_det != data->vbus_det) {
+ sun4i_usb_phy0_set_vbus_detect(phy0, vbus_det);
+ data->vbus_det = vbus_det;
+ vbus_notify = 1;
+ }
+
+ mutex_unlock(&phy0->mutex);
+
+ if (id_notify) {
+ extcon_set_cable_state_(data->extcon, EXTCON_USB_HOST,
+ !id_det);
+ /*
+ * When a host cable gets unplugged (id == 1) on systems
+ * without vbus detection report vbus low for long enough to
+ * the musb-ip to end the current host session.
+ */
+ if (!sun4i_usb_phy0_have_vbus_det(data) && id_det == 1) {
+ mutex_lock(&phy0->mutex);
+ sun4i_usb_phy0_set_vbus_detect(phy0, 0);
+ msleep(1000);
+ sun4i_usb_phy0_set_vbus_detect(phy0, 1);
+ mutex_unlock(&phy0->mutex);
+ }
+ }
+
+ if (vbus_notify)
+ extcon_set_cable_state_(data->extcon, EXTCON_USB, vbus_det);
+
+ if (data->phy0_poll)
+ queue_delayed_work(system_wq, &data->detect, POLL_TIME);
+}
+
+static irqreturn_t sun4i_usb_phy0_id_vbus_det_irq(int irq, void *dev_id)
+{
+ struct sun4i_usb_phy_data *data = dev_id;
+
+ /* vbus or id changed, let the pins settle and then scan them */
+ mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME);
+
+ return IRQ_HANDLED;
+}
+
+static int sun4i_usb_phy0_vbus_notify(struct notifier_block *nb,
+ unsigned long val, void *v)
+{
+ struct sun4i_usb_phy_data *data =
+ container_of(nb, struct sun4i_usb_phy_data, vbus_power_nb);
+ struct power_supply *psy = v;
+
+ /* Properties on the vbus_power_supply changed, scan vbus_det */
+ if (val == PSY_EVENT_PROP_CHANGED && psy == data->vbus_power_supply)
+ mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME);
+
+ return NOTIFY_OK;
+}
+