void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
{
clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
/*
* Disable radio.
*/
rt2x00lib_disable_radio(rt2x00dev);
/*
* Stop all work.
*/
cancel_work_sync(&rt2x00dev->intf_work);
cancel_work_sync(&rt2x00dev->rxdone_work);
cancel_work_sync(&rt2x00dev->txdone_work);
/*
* Free the tx status fifo.
*/
kfifo_free(&rt2x00dev->txstatus_fifo);
/*
* Kill the tx status tasklet.
*/
tasklet_kill(&rt2x00dev->txstatus_tasklet);
/*
* Uninitialize device.
*/
rt2x00lib_uninitialize(rt2x00dev);
/*
* Free extra components
*/
rt2x00debug_deregister(rt2x00dev);
rt2x00leds_unregister(rt2x00dev);
/*
* Free ieee80211_hw memory.
*/
rt2x00lib_remove_hw(rt2x00dev);
/*
* Free firmware image.
*/
rt2x00lib_free_firmware(rt2x00dev);
/*
* Free queue structures.
*/
rt2x00queue_free(rt2x00dev);
}
int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state)
{
int retval;
NOTICE(rt2x00dev, "Going to sleep.\n");
__clear_bit(DEVICE_PRESENT, &rt2x00dev->flags);
/*
* Only continue if mac80211 has open interfaces.
*/
if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags))
goto exit;
__set_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags);
/*
* Disable radio.
*/
rt2x00lib_stop(rt2x00dev);
rt2x00lib_uninitialize(rt2x00dev);
/*
* Suspend/disable extra components.
*/
rt2x00leds_suspend(rt2x00dev);
rt2x00debug_deregister(rt2x00dev);
exit:
/*
* Set device mode to sleep for power management,
* on some hardware this call seems to consistently fail.
* From the specifications it is hard to tell why it fails,
* and if this is a "bad thing".
* Overall it is safe to just ignore the failure and
* continue suspending. The only downside is that the
* device will not be in optimal power save mode, but with
* the radio and the other components already disabled the
* device is as good as disabled.
*/
retval = rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP);
if (retval)
WARNING(rt2x00dev, "Device failed to enter sleep state, "
"continue suspending.\n");
return 0;
}
int rt2x00lib_start(struct rt2x00_dev *rt2x00dev)
{
int retval;
if (test_bit(DEVICE_STARTED, &rt2x00dev->flags))
return 0;
/*
* If this is the first interface which is added,
* we should load the firmware now.
*/
retval = rt2x00lib_load_firmware(rt2x00dev);
if (retval)
return retval;
/*
* Initialize the device.
*/
retval = rt2x00lib_initialize(rt2x00dev);
if (retval)
return retval;
/*
* Enable radio.
*/
retval = rt2x00lib_enable_radio(rt2x00dev);
if (retval) {
rt2x00lib_uninitialize(rt2x00dev);
return retval;
}
rt2x00dev->intf_ap_count = 0;
rt2x00dev->intf_sta_count = 0;
rt2x00dev->intf_associated = 0;
__set_bit(DEVICE_STARTED, &rt2x00dev->flags);
__set_bit(DEVICE_DIRTY_CONFIG, &rt2x00dev->flags);
return 0;
}
int rt2x00mac_start(struct ieee80211_hw *hw)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
int status;
if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) ||
test_bit(DEVICE_STARTED, &rt2x00dev->flags))
return 0;
/*
* If this is the first interface which is added,
* we should load the firmware now.
*/
if (test_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags)) {
status = rt2x00lib_load_firmware(rt2x00dev);
if (status)
return status;
}
/*
* Initialize the device.
*/
status = rt2x00lib_initialize(rt2x00dev);
if (status)
return status;
/*
* Enable radio.
*/
status = rt2x00lib_enable_radio(rt2x00dev);
if (status) {
rt2x00lib_uninitialize(rt2x00dev);
return status;
}
__set_bit(DEVICE_STARTED, &rt2x00dev->flags);
return 0;
}
int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state)
{
NOTICE(rt2x00dev, "Going to sleep.\n");
/*
* Prevent mac80211 from accessing driver while suspended.
*/
if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
return 0;
/*
* Cleanup as much as possible.
*/
rt2x00lib_uninitialize(rt2x00dev);
/*
* Suspend/disable extra components.
*/
rt2x00leds_suspend(rt2x00dev);
rt2x00debug_deregister(rt2x00dev);
/*
* Set device mode to sleep for power management,
* on some hardware this call seems to consistently fail.
* From the specifications it is hard to tell why it fails,
* and if this is a "bad thing".
* Overall it is safe to just ignore the failure and
* continue suspending. The only downside is that the
* device will not be in optimal power save mode, but with
* the radio and the other components already disabled the
* device is as good as disabled.
*/
if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP))
WARNING(rt2x00dev, "Device failed to enter sleep state, "
"continue suspending.\n");
return 0;
}
void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
{
__clear_bit(DEVICE_PRESENT, &rt2x00dev->flags);
/*
* Disable radio.
*/
rt2x00lib_disable_radio(rt2x00dev);
/*
* Uninitialize device.
*/
rt2x00lib_uninitialize(rt2x00dev);
/*
* Free extra components
*/
rt2x00debug_deregister(rt2x00dev);
rt2x00rfkill_free(rt2x00dev);
rt2x00leds_unregister(rt2x00dev);
/*
* Free ieee80211_hw memory.
*/
rt2x00lib_remove_hw(rt2x00dev);
/*
* Free firmware image.
*/
rt2x00lib_free_firmware(rt2x00dev);
/*
* Free queue structures.
*/
rt2x00queue_free(rt2x00dev);
}
void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
{
clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
/*
* Disable radio.
*/
rt2x00lib_disable_radio(rt2x00dev);
/*
* Stop all work.
*/
cancel_work_sync(&rt2x00dev->intf_work);
cancel_delayed_work_sync(&rt2x00dev->autowakeup_work);
cancel_work_sync(&rt2x00dev->sleep_work);
if (rt2x00_is_usb(rt2x00dev)) {
hrtimer_cancel(&rt2x00dev->txstatus_timer);
cancel_work_sync(&rt2x00dev->rxdone_work);
cancel_work_sync(&rt2x00dev->txdone_work);
}
if (rt2x00dev->workqueue)
destroy_workqueue(rt2x00dev->workqueue);
/*
* Free the tx status fifo.
*/
kfifo_free(&rt2x00dev->txstatus_fifo);
/*
* Kill the tx status tasklet.
*/
tasklet_kill(&rt2x00dev->txstatus_tasklet);
tasklet_kill(&rt2x00dev->pretbtt_tasklet);
tasklet_kill(&rt2x00dev->tbtt_tasklet);
tasklet_kill(&rt2x00dev->rxdone_tasklet);
tasklet_kill(&rt2x00dev->autowake_tasklet);
/*
* Uninitialize device.
*/
rt2x00lib_uninitialize(rt2x00dev);
/*
* Free extra components
*/
rt2x00debug_deregister(rt2x00dev);
rt2x00leds_unregister(rt2x00dev);
/*
* Free ieee80211_hw memory.
*/
rt2x00lib_remove_hw(rt2x00dev);
/*
* Free firmware image.
*/
rt2x00lib_free_firmware(rt2x00dev);
/*
* Free queue structures.
*/
rt2x00queue_free(rt2x00dev);
/*
* Free the driver data.
*/
if (rt2x00dev->drv_data)
kfree(rt2x00dev->drv_data);
}
int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
{
int retval;
NOTICE(rt2x00dev, "Waking up.\n");
/*
* Restore/enable extra components.
*/
rt2x00debug_register(rt2x00dev);
rt2x00leds_resume(rt2x00dev);
/*
* Only continue if mac80211 had open interfaces.
*/
if (!__test_and_clear_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags))
return 0;
/*
* Reinitialize device and all active interfaces.
*/
retval = rt2x00lib_start(rt2x00dev);
if (retval)
goto exit;
/*
* Reconfigure device.
*/
retval = rt2x00mac_config(rt2x00dev->hw, &rt2x00dev->hw->conf);
if (retval)
goto exit;
/*
* Iterator over each active interface to
* reconfigure the hardware.
*/
ieee80211_iterate_active_interfaces(rt2x00dev->hw,
rt2x00lib_resume_intf, rt2x00dev);
/*
* We are ready again to receive requests from mac80211.
*/
__set_bit(DEVICE_PRESENT, &rt2x00dev->flags);
/*
* It is possible that during that mac80211 has attempted
* to send frames while we were suspending or resuming.
* In that case we have disabled the TX queue and should
* now enable it again
*/
ieee80211_wake_queues(rt2x00dev->hw);
/*
* During interface iteration we might have changed the
* delayed_flags, time to handles the event by calling
* the work handler directly.
*/
rt2x00lib_intf_scheduled(&rt2x00dev->intf_work);
return 0;
exit:
rt2x00lib_disable_radio(rt2x00dev);
rt2x00lib_uninitialize(rt2x00dev);
rt2x00debug_deregister(rt2x00dev);
return retval;
}
