mac80211: Add radio led trigger
Some devices have a seperate LED which indicates if the radio is
enabled or not. This adds a LED trigger to mac80211 where drivers
can hook into when they are interested in radio status changes.
v2: Check hw.conf.radio_enabled when calling start().
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 3784a61..be2a383 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1143,6 +1143,7 @@
extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw);
extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw);
extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw);
+extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw);
#endif
/**
* ieee80211_get_tx_led_name - get name of TX LED
@@ -1182,6 +1183,16 @@
#endif
}
+/**
+ * ieee80211_get_assoc_led_name - get name of association LED
+ *
+ * mac80211 creates a association LED trigger for each wireless hardware
+ * that can be used to drive LEDs if your driver registers a LED device.
+ * This function returns the name (or %NULL if not configured for LEDs)
+ * of the trigger so you can automatically link the LED device.
+ *
+ * @hw: the hardware to get the LED trigger name for
+ */
static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
{
#ifdef CONFIG_MAC80211_LEDS
@@ -1191,6 +1202,24 @@
#endif
}
+/**
+ * ieee80211_get_radio_led_name - get name of radio LED
+ *
+ * mac80211 creates a radio change LED trigger for each wireless hardware
+ * that can be used to drive LEDs if your driver registers a LED device.
+ * This function returns the name (or %NULL if not configured for LEDs)
+ * of the trigger so you can automatically link the LED device.
+ *
+ * @hw: the hardware to get the LED trigger name for
+ */
+static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
+{
+#ifdef CONFIG_MAC80211_LEDS
+ return __ieee80211_get_radio_led_name(hw);
+#else
+ return NULL;
+#endif
+}
/* Register a new hardware PHYMODE capability to the stack. */
int ieee80211_register_hwmode(struct ieee80211_hw *hw,
diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c
index 8ba69ae..4807e52 100644
--- a/net/mac80211/ieee80211.c
+++ b/net/mac80211/ieee80211.c
@@ -219,6 +219,7 @@
if (res)
return res;
ieee80211_hw_config(local);
+ ieee80211_led_radio(local, local->hw.conf.radio_enabled);
}
switch (sdata->type) {
@@ -392,6 +393,8 @@
if (local->ops->stop)
local->ops->stop(local_to_hw(local));
+ ieee80211_led_radio(local, 0);
+
tasklet_disable(&local->tx_pending_tasklet);
tasklet_disable(&local->tasklet);
}
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 662e69e..b898b31 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -500,8 +500,9 @@
#ifdef CONFIG_MAC80211_LEDS
int tx_led_counter, rx_led_counter;
- struct led_trigger *tx_led, *rx_led, *assoc_led;
- char tx_led_name[32], rx_led_name[32], assoc_led_name[32];
+ struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
+ char tx_led_name[32], rx_led_name[32],
+ assoc_led_name[32], radio_led_name[32];
#endif
u32 channel_use;
diff --git a/net/mac80211/ieee80211_ioctl.c b/net/mac80211/ieee80211_ioctl.c
index 04ddce7..2604e21 100644
--- a/net/mac80211/ieee80211_ioctl.c
+++ b/net/mac80211/ieee80211_ioctl.c
@@ -21,6 +21,7 @@
#include <net/mac80211.h>
#include "ieee80211_i.h"
+#include "ieee80211_led.h"
#include "ieee80211_rate.h"
#include "wpa.h"
#include "aes_ccm.h"
@@ -652,6 +653,7 @@
if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
local->hw.conf.radio_enabled = !(data->txpower.disabled);
need_reconfig = 1;
+ ieee80211_led_radio(local, local->hw.conf.radio_enabled);
}
if (need_reconfig) {
diff --git a/net/mac80211/ieee80211_led.c b/net/mac80211/ieee80211_led.c
index 4cf89af..f401484 100644
--- a/net/mac80211/ieee80211_led.c
+++ b/net/mac80211/ieee80211_led.c
@@ -43,6 +43,16 @@
led_trigger_event(local->assoc_led, LED_OFF);
}
+void ieee80211_led_radio(struct ieee80211_local *local, bool enabled)
+{
+ if (unlikely(!local->radio_led))
+ return;
+ if (enabled)
+ led_trigger_event(local->radio_led, LED_FULL);
+ else
+ led_trigger_event(local->radio_led, LED_OFF);
+}
+
void ieee80211_led_init(struct ieee80211_local *local)
{
local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
@@ -77,10 +87,25 @@
local->assoc_led = NULL;
}
}
+
+ local->radio_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
+ if (local->radio_led) {
+ snprintf(local->radio_led_name, sizeof(local->radio_led_name),
+ "%sradio", wiphy_name(local->hw.wiphy));
+ local->radio_led->name = local->radio_led_name;
+ if (led_trigger_register(local->radio_led)) {
+ kfree(local->radio_led);
+ local->radio_led = NULL;
+ }
+ }
}
void ieee80211_led_exit(struct ieee80211_local *local)
{
+ if (local->radio_led) {
+ led_trigger_unregister(local->radio_led);
+ kfree(local->radio_led);
+ }
if (local->assoc_led) {
led_trigger_unregister(local->assoc_led);
kfree(local->assoc_led);
@@ -95,6 +120,16 @@
}
}
+char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+
+ if (local->radio_led)
+ return local->radio_led_name;
+ return NULL;
+}
+EXPORT_SYMBOL(__ieee80211_get_radio_led_name);
+
char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
{
struct ieee80211_local *local = hw_to_local(hw);
diff --git a/net/mac80211/ieee80211_led.h b/net/mac80211/ieee80211_led.h
index 0feb226..77b1e1b 100644
--- a/net/mac80211/ieee80211_led.h
+++ b/net/mac80211/ieee80211_led.h
@@ -16,6 +16,8 @@
extern void ieee80211_led_tx(struct ieee80211_local *local, int q);
extern void ieee80211_led_assoc(struct ieee80211_local *local,
bool associated);
+extern void ieee80211_led_radio(struct ieee80211_local *local,
+ bool enabled);
extern void ieee80211_led_init(struct ieee80211_local *local);
extern void ieee80211_led_exit(struct ieee80211_local *local);
#else
@@ -29,6 +31,10 @@
bool associated)
{
}
+static inline void ieee80211_led_radio(struct ieee80211_local *local,
+ bool enabled)
+{
+}
static inline void ieee80211_led_init(struct ieee80211_local *local)
{
}