static void carl9170_usb_disconnect(struct usb_interface *intf)
{
struct ar9170 *ar = usb_get_intfdata(intf);
struct usb_device *udev;
if (WARN_ON(!ar))
return;
udev = ar->udev;
wait_for_completion(&ar->fw_load_wait);
if (IS_INITIALIZED(ar)) {
carl9170_reboot(ar);
carl9170_usb_stop(ar);
}
carl9170_usb_cancel_urbs(ar);
carl9170_unregister(ar);
usb_set_intfdata(intf, NULL);
carl9170_release_firmware(ar);
carl9170_free(ar);
usb_put_dev(udev);
}
static void carl9170_usb_firmware_finish(struct ar9170 *ar)
{
int err;
err = carl9170_parse_firmware(ar);
if (err)
goto err_freefw;
err = carl9170_usb_init_device(ar);
if (err)
goto err_freefw;
err = carl9170_register(ar);
carl9170_usb_stop(ar);
if (err)
goto err_unrx;
complete(&ar->fw_load_wait);
usb_put_dev(ar->udev);
return;
err_unrx:
carl9170_usb_cancel_urbs(ar);
err_freefw:
carl9170_release_firmware(ar);
carl9170_usb_firmware_failed(ar);
}
static int carl9170_usb_resume(struct usb_interface *intf)
{
struct ar9170 *ar = usb_get_intfdata(intf);
int err;
if (!ar)
return -ENODEV;
usb_unpoison_anchored_urbs(&ar->rx_anch);
carl9170_set_state(ar, CARL9170_STOPPED);
/*
* The USB documentation demands that [for suspend] all traffic
* to and from the device has to stop. This would be fine, but
* there's a catch: the device[usb phy] does not come back.
*
* Upon resume the firmware will "kill" itself and the
* boot-code sorts out the magic voodoo.
* Not very nice, but there's not much what could go wrong.
*/
msleep(1100);
err = carl9170_usb_init_device(ar);
if (err)
goto err_unrx;
return 0;
err_unrx:
carl9170_usb_cancel_urbs(ar);
return err;
}
static int carl9170_usb_init_device(struct ar9170 *ar)
{
int err;
err = carl9170_usb_send_rx_irq_urb(ar);
if (err)
goto err_out;
err = carl9170_usb_init_rx_bulk_urbs(ar);
if (err)
goto err_unrx;
mutex_lock(&ar->mutex);
err = carl9170_usb_load_firmware(ar);
mutex_unlock(&ar->mutex);
if (err)
goto err_unrx;
return 0;
err_unrx:
carl9170_usb_cancel_urbs(ar);
err_out:
return err;
}
static int carl9170_usb_resume(struct usb_interface *intf)
{
struct ar9170 *ar = usb_get_intfdata(intf);
int err;
if (!ar)
return -ENODEV;
usb_unpoison_anchored_urbs(&ar->rx_anch);
err = carl9170_usb_init_device(ar);
if (err)
goto err_unrx;
err = carl9170_usb_open(ar);
if (err)
goto err_unrx;
return 0;
err_unrx:
carl9170_usb_cancel_urbs(ar);
return err;
}
static int carl9170_usb_suspend(struct usb_interface *intf,
pm_message_t message)
{
struct ar9170 *ar = usb_get_intfdata(intf);
if (!ar)
return -ENODEV;
carl9170_usb_cancel_urbs(ar);
return 0;
}
static int carl9170_usb_suspend(struct usb_interface *intf,
pm_message_t message)
{
struct ar9170 *ar = usb_get_intfdata(intf);
if (!ar)
return -ENODEV;
carl9170_usb_cancel_urbs(ar);
/*
* firmware automatically reboots for usb suspend.
*/
return 0;
}
void carl9170_usb_reset(struct ar9170 *ar)
{
/*
* This is the last resort to get the device going again
* without any *user replugging action*.
*
* But there is a catch: usb_reset really is like a physical
* *reconnect*. The mac80211 state will be lost in the process.
* Therefore a userspace application, which is monitoring
* the link must step in.
*/
carl9170_usb_cancel_urbs(ar);
carl9170_usb_stop(ar);
usb_queue_reset_device(ar->intf);
}
static int carl9170_usb_init_device(struct ar9170 *ar)
{
int err;
/*
* The carl9170 firmware let's the driver know when it's
* ready for action. But we have to be prepared to gracefully
* handle all spurious [flushed] messages after each (re-)boot.
* Thus the command response counter remains disabled until it
* can be safely synchronized.
*/
ar->cmd_seq = -2;
err = carl9170_usb_send_rx_irq_urb(ar);
if (err)
goto err_out;
err = carl9170_usb_init_rx_bulk_urbs(ar);
if (err)
goto err_unrx;
err = carl9170_usb_open(ar);
if (err)
goto err_unrx;
mutex_lock(&ar->mutex);
err = carl9170_usb_load_firmware(ar);
mutex_unlock(&ar->mutex);
if (err)
goto err_stop;
return 0;
err_stop:
carl9170_usb_stop(ar);
err_unrx:
carl9170_usb_cancel_urbs(ar);
err_out:
return err;
}
int carl9170_usb_restart(struct ar9170 *ar)
{
int err = 0;
if (ar->intf->condition != USB_INTERFACE_BOUND)
return 0;
/*
* Disable the command response sequence counter check.
* We already know that the device/firmware is in a bad state.
* So, no extra points are awarded to anyone who reminds the
* driver about that.
*/
ar->cmd_seq = -2;
err = carl9170_reboot(ar);
carl9170_usb_stop(ar);
if (err)
goto err_out;
tasklet_schedule(&ar->usb_tasklet);
/* The reboot procedure can take quite a while to complete. */
msleep(1100);
err = carl9170_usb_open(ar);
if (err)
goto err_out;
err = carl9170_usb_load_firmware(ar);
if (err)
goto err_out;
return 0;
err_out:
carl9170_usb_cancel_urbs(ar);
return err;
}
int carl9170_usb_restart(struct ar9170 *ar)
{
int err = 0;
if (ar->intf->condition != USB_INTERFACE_BOUND)
return 0;
/* Disable command response sequence counter. */
ar->cmd_seq = -2;
err = carl9170_reboot(ar);
carl9170_usb_stop(ar);
if (err)
goto err_out;
tasklet_schedule(&ar->usb_tasklet);
/* The reboot procedure can take quite a while to complete. */
msleep(1100);
err = carl9170_usb_open(ar);
if (err)
goto err_out;
err = carl9170_usb_load_firmware(ar);
if (err)
goto err_out;
return 0;
err_out:
carl9170_usb_cancel_urbs(ar);
return err;
}
