static struct rfkill_gsw_state rfkill_global_states[RFKILL_TYPE_MAX];
static unsigned long rfkill_states_lockdflt[BITS_TO_LONGS(RFKILL_TYPE_MAX)];
+static bool rfkill_epo_lock_active;
static BLOCKING_NOTIFIER_HEAD(rfkill_notifier_list);
static void notify_rfkill_state_change(struct rfkill *rfkill)
{
+ rfkill_led_trigger(rfkill, rfkill->state);
blocking_notifier_call_chain(&rfkill_notifier_list,
RFKILL_STATE_CHANGED,
rfkill);
rfkill->state = state;
}
- if (force || rfkill->state != oldstate) {
- rfkill_led_trigger(rfkill, rfkill->state);
+ if (force || rfkill->state != oldstate)
notify_rfkill_state_change(rfkill);
- }
return retval;
}
*
* Acquires rfkill_global_mutex and calls __rfkill_switch_all(@type, @state).
* Please refer to __rfkill_switch_all() for details.
+ *
+ * Does nothing if the EPO lock is active.
*/
void rfkill_switch_all(enum rfkill_type type, enum rfkill_state state)
{
mutex_lock(&rfkill_global_mutex);
- __rfkill_switch_all(type, state);
+ if (!rfkill_epo_lock_active)
+ __rfkill_switch_all(type, state);
mutex_unlock(&rfkill_global_mutex);
}
EXPORT_SYMBOL(rfkill_switch_all);
mutex_lock(&rfkill_global_mutex);
+ rfkill_epo_lock_active = true;
list_for_each_entry(rfkill, &rfkill_list, node) {
mutex_lock(&rfkill->mutex);
rfkill_toggle_radio(rfkill, RFKILL_STATE_SOFT_BLOCKED, 1);
mutex_lock(&rfkill_global_mutex);
+ rfkill_epo_lock_active = false;
for (i = 0; i < RFKILL_TYPE_MAX; i++)
__rfkill_switch_all(i, rfkill_global_states[i].default_state);
mutex_unlock(&rfkill_global_mutex);
EXPORT_SYMBOL_GPL(rfkill_restore_states);
/**
+ * rfkill_remove_epo_lock - unlock state changes
+ *
+ * Used by rfkill-input manually unlock state changes, when
+ * the EPO switch is deactivated.
+ */
+void rfkill_remove_epo_lock(void)
+{
+ mutex_lock(&rfkill_global_mutex);
+ rfkill_epo_lock_active = false;
+ mutex_unlock(&rfkill_global_mutex);
+}
+EXPORT_SYMBOL_GPL(rfkill_remove_epo_lock);
+
+/**
+ * rfkill_is_epo_lock_active - returns true EPO is active
+ *
+ * Returns 0 (false) if there is NOT an active EPO contidion,
+ * and 1 (true) if there is an active EPO contition, which
+ * locks all radios in one of the BLOCKED states.
+ *
+ * Can be called in atomic context.
+ */
+bool rfkill_is_epo_lock_active(void)
+{
+ return rfkill_epo_lock_active;
+}
+EXPORT_SYMBOL_GPL(rfkill_is_epo_lock_active);
+
+/**
+ * rfkill_get_global_state - returns global state for a type
+ * @type: the type to get the global state of
+ *
+ * Returns the current global state for a given wireless
+ * device type.
+ */
+enum rfkill_state rfkill_get_global_state(const enum rfkill_type type)
+{
+ return rfkill_global_states[type].current_state;
+}
+EXPORT_SYMBOL_GPL(rfkill_get_global_state);
+
+/**
* rfkill_force_state - Force the internal rfkill radio state
* @rfkill: pointer to the rfkill class to modify.
* @state: the current radio state the class should be forced to.
state != RFKILL_STATE_SOFT_BLOCKED)
return -EINVAL;
- if (mutex_lock_interruptible(&rfkill->mutex))
- return -ERESTARTSYS;
- error = rfkill_toggle_radio(rfkill, state, 0);
+ error = mutex_lock_killable(&rfkill->mutex);
+ if (error)
+ return error;
+
+ if (!rfkill_epo_lock_active)
+ error = rfkill_toggle_radio(rfkill, state, 0);
+ else
+ error = -EPERM;
+
mutex_unlock(&rfkill->mutex);
return error ? error : count;
* Take the global lock to make sure the kernel is not in
* the middle of rfkill_switch_all
*/
- error = mutex_lock_interruptible(&rfkill_global_mutex);
+ error = mutex_lock_killable(&rfkill_global_mutex);
if (error)
return error;
if (rfkill->user_claim != claim) {
- if (!claim) {
+ if (!claim && !rfkill_epo_lock_active) {
mutex_lock(&rfkill->mutex);
rfkill_toggle_radio(rfkill,
rfkill_global_states[rfkill->type].current_state,
{
struct rfkill *rfkill = to_rfkill(dev);
- if (dev->power.power_state.event != state.event) {
- if (state.event & PM_EVENT_SLEEP) {
- /* Stop transmitter, keep state, no notifies */
- update_rfkill_state(rfkill);
-
- mutex_lock(&rfkill->mutex);
- rfkill->toggle_radio(rfkill->data,
- RFKILL_STATE_SOFT_BLOCKED);
- mutex_unlock(&rfkill->mutex);
- }
-
+ /* mark class device as suspended */
+ if (dev->power.power_state.event != state.event)
dev->power.power_state = state;
- }
+
+ /* store state for the resume handler */
+ rfkill->state_for_resume = rfkill->state;
return 0;
}
dev->power.power_state.event = PM_EVENT_ON;
- /* restore radio state AND notify everybody */
- rfkill_toggle_radio(rfkill, rfkill->state, 1);
+ /*
+ * If we are under EPO, kick transmitter offline,
+ * otherwise restore to pre-suspend state.
+ *
+ * Issue a notification in any case
+ */
+ rfkill_toggle_radio(rfkill,
+ rfkill_epo_lock_active ?
+ RFKILL_STATE_SOFT_BLOCKED :
+ rfkill->state_for_resume,
+ 1);
mutex_unlock(&rfkill->mutex);
}
}
/* 0: first switch of its kind */
- return test_bit(rfkill->type, seen);
+ return (test_bit(rfkill->type, seen)) ? 1 : 0;
}
static int rfkill_add_switch(struct rfkill *rfkill)
int error;
if (!rfkill->led_trigger.name)
- rfkill->led_trigger.name = rfkill->dev.bus_id;
+ rfkill->led_trigger.name = dev_name(&rfkill->dev);
if (!rfkill->led_trigger.activate)
rfkill->led_trigger.activate = rfkill_led_trigger_activate;
error = led_trigger_register(&rfkill->led_trigger);
"badly initialized rfkill struct\n"))
return -EINVAL;
- snprintf(dev->bus_id, sizeof(dev->bus_id),
- "rfkill%ld", (long)atomic_inc_return(&rfkill_no) - 1);
+ dev_set_name(dev, "rfkill%ld", (long)atomic_inc_return(&rfkill_no) - 1);
rfkill_led_trigger_register(rfkill);
if (!test_and_set_bit(type, rfkill_states_lockdflt)) {
rfkill_global_states[type].default_state = state;
+ rfkill_global_states[type].current_state = state;
error = 0;
} else
error = -EPERM;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff