/*
* Translate from rfkill state to wimax state
*
* NOTE: Special state handling rules here
*
* Just pretend the call didn't happen if we are in a state where
* we know for sure it cannot be handled (WIMAX_ST_DOWN or
* __WIMAX_ST_QUIESCING). rfkill() needs it to register and
* unregister, as it will run this path.
*
* NOTE: This call will block until the operation is completed.
*/
static int wimax_rfkill_set_radio_block(void *data, bool blocked)
{
int result;
struct wimax_dev *wimax_dev = data;
struct device *dev = wimax_dev_to_dev(wimax_dev);
enum wimax_rf_state rf_state;
d_fnstart(3, dev, "(wimax_dev %p blocked %u)\n", wimax_dev, blocked);
rf_state = WIMAX_RF_ON;
if (blocked)
rf_state = WIMAX_RF_OFF;
mutex_lock(&wimax_dev->mutex);
if (wimax_dev->state <= __WIMAX_ST_QUIESCING)
result = 0;
else
result = __wimax_rf_toggle_radio(wimax_dev, rf_state);
mutex_unlock(&wimax_dev->mutex);
d_fnend(3, dev, "(wimax_dev %p blocked %u) = %d\n",
wimax_dev, blocked, result);
return result;
}
/**
* wimax_rfkill - Set the software RF switch state for a WiMAX device
*
* @wimax_dev: WiMAX device descriptor
*
* @state: New RF state.
*
* Returns:
*
* >= 0 toggle state if ok, < 0 errno code on error. The toggle state
* is returned as a bitmap, bit 0 being the hardware RF state, bit 1
* the software RF state.
*
* 0 means disabled (%WIMAX_RF_ON, radio on), 1 means enabled radio
* off (%WIMAX_RF_OFF).
*
* Description:
*
* Called by the user when he wants to request the WiMAX radio to be
* switched on (%WIMAX_RF_ON) or off (%WIMAX_RF_OFF). With
* %WIMAX_RF_QUERY, just the current state is returned.
*
* NOTE:
*
* This call will block until the operation is complete.
*/
int wimax_rfkill(struct wimax_dev *wimax_dev, enum wimax_rf_state state)
{
int result;
struct device *dev = wimax_dev_to_dev(wimax_dev);
d_fnstart(3, dev, "(wimax_dev %p state %u)\n", wimax_dev, state);
mutex_lock(&wimax_dev->mutex);
result = wimax_dev_is_ready(wimax_dev);
if (result < 0) {
/* While initializing, < 1.4.3 wimax-tools versions use
* this call to check if the device is a valid WiMAX
* device; so we allow it to proceed always,
* considering the radios are all off. */
if (result == -ENOMEDIUM && state == WIMAX_RF_QUERY)
result = WIMAX_RF_OFF << 1 | WIMAX_RF_OFF;
goto error_not_ready;
}
switch (state) {
case WIMAX_RF_ON:
case WIMAX_RF_OFF:
result = __wimax_rf_toggle_radio(wimax_dev, state);
if (result < 0)
goto error;
rfkill_set_sw_state(wimax_dev->rfkill, state == WIMAX_RF_OFF);
break;
case WIMAX_RF_QUERY:
break;
default:
result = -EINVAL;
goto error;
}
result = wimax_dev->rf_sw << 1 | wimax_dev->rf_hw;
error:
error_not_ready:
mutex_unlock(&wimax_dev->mutex);
d_fnend(3, dev, "(wimax_dev %p state %u) = %d\n",
wimax_dev, state, result);
return result;
}
int wimax_rfkill(struct wimax_dev *wimax_dev, enum wimax_rf_state state)
{
int result;
struct device *dev = wimax_dev_to_dev(wimax_dev);
d_fnstart(3, dev, "(wimax_dev %p state %u)\n", wimax_dev, state);
mutex_lock(&wimax_dev->mutex);
result = wimax_dev_is_ready(wimax_dev);
if (result < 0) {
/*
*/
if (result == -ENOMEDIUM && state == WIMAX_RF_QUERY)
result = WIMAX_RF_OFF << 1 | WIMAX_RF_OFF;
goto error_not_ready;
}
switch (state) {
case WIMAX_RF_ON:
case WIMAX_RF_OFF:
result = __wimax_rf_toggle_radio(wimax_dev, state);
if (result < 0)
goto error;
rfkill_set_sw_state(wimax_dev->rfkill, state == WIMAX_RF_OFF);
break;
case WIMAX_RF_QUERY:
break;
default:
result = -EINVAL;
goto error;
}
result = wimax_dev->rf_sw << 1 | wimax_dev->rf_hw;
error:
error_not_ready:
mutex_unlock(&wimax_dev->mutex);
d_fnend(3, dev, "(wimax_dev %p state %u) = %d\n",
wimax_dev, state, result);
return result;
}