This adds a LED trigger.
Signed-off-by: Michael Buesch <mb@xxxxxxxxx>
Index: wireless-2.6/include/linux/rfkill.h
===================================================================
--- wireless-2.6.orig/include/linux/rfkill.h 2007-09-26 17:22:47.000000000 +0200
+++ wireless-2.6/include/linux/rfkill.h 2007-09-27 16:21:37.000000000 +0200
@@ -26,6 +26,7 @@
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/device.h>
+#include <linux/leds.h>
/**
* enum rfkill_type - type of rfkill switch.
@@ -56,6 +57,7 @@ enum rfkill_state {
* @data: Pointer to the RF button drivers private data which will be
* passed along when toggling radio state.
* @toggle_radio(): Mandatory handler to control state of the radio.
+ * @led_trigger: A LED trigger for this button's LED.
* @dev: Device structure integrating the switch into device tree.
* @node: Used to place switch into list of all switches known to the
* the system.
@@ -74,6 +76,10 @@ struct rfkill {
void *data;
int (*toggle_radio)(void *data, enum rfkill_state state);
+#ifdef CONFIG_RFKILL_LEDS
+ struct led_trigger led_trigger;
+#endif
+
struct device dev;
struct list_head node;
};
@@ -86,4 +92,19 @@ void rfkill_unregister(struct rfkill *rf
void rfkill_switch_all(enum rfkill_type type, enum rfkill_state state);
+/**
+ * rfkill_get_led_name - Get the LED trigger name for the button's LED.
+ * This function might return a NULL pointer if registering of the
+ * LED trigger failed.
+ * Use this as "default_trigger" for the LED.
+ */
+static inline char *rfkill_get_led_name(struct rfkill *rfkill)
+{
+#ifdef CONFIG_RFKILL_LEDS
+ return (char *)(rfkill->led_trigger.name);
+#else
+ return NULL;
+#endif
+}
+
#endif /* RFKILL_H */
Index: wireless-2.6/net/rfkill/rfkill.c
===================================================================
--- wireless-2.6.orig/net/rfkill/rfkill.c 2007-09-26 17:22:49.000000000 +0200
+++ wireless-2.6/net/rfkill/rfkill.c 2007-09-27 16:32:30.000000000 +0200
@@ -37,6 +37,22 @@ static DEFINE_MUTEX(rfkill_mutex);
static enum rfkill_state rfkill_states[RFKILL_TYPE_MAX];
+
+static void rfkill_led_trigger(struct rfkill *rfkill,
+ enum rfkill_state state)
+{
+#ifdef CONFIG_RFKILL_LEDS
+ struct led_trigger *led = &rfkill->led_trigger;
+
+ if (!led->name)
+ return;
+ if (state == RFKILL_STATE_OFF)
+ led_trigger_event(led, LED_OFF);
+ else
+ led_trigger_event(led, LED_FULL);
+#endif /* CONFIG_RFKILL_LEDS */
+}
+
static int rfkill_toggle_radio(struct rfkill *rfkill,
enum rfkill_state state)
{
@@ -48,8 +64,10 @@ static int rfkill_toggle_radio(struct rf
if (state != rfkill->state) {
retval = rfkill->toggle_radio(rfkill->data, state);
- if (!retval)
+ if (!retval) {
rfkill->state = state;
+ rfkill_led_trigger(rfkill, state);
+ }
}
mutex_unlock(&rfkill->mutex);
@@ -328,6 +346,26 @@ void rfkill_free(struct rfkill *rfkill)
}
EXPORT_SYMBOL(rfkill_free);
+static void rfkill_led_trigger_register(struct rfkill *rfkill)
+{
+#ifdef CONFIG_RFKILL_LEDS
+ int error;
+
+ rfkill->led_trigger.name = rfkill->dev.bus_id;
+ error = led_trigger_register(&rfkill->led_trigger);
+ if (error)
+ rfkill->led_trigger.name = NULL;
+#endif /* CONFIG_RFKILL_LEDS */
+}
+
+static void rfkill_led_trigger_unregister(struct rfkill *rfkill)
+{
+#ifdef CONFIG_RFKILL_LEDS
+ if (rfkill->led_trigger.name)
+ led_trigger_unregister(&rfkill->led_trigger);
+#endif
+}
+
/**
* rfkill_register - Register a rfkill structure.
* @rfkill: rfkill structure to be registered
@@ -357,6 +395,7 @@ int rfkill_register(struct rfkill *rfkil
rfkill_remove_switch(rfkill);
return error;
}
+ rfkill_led_trigger_register(rfkill);
return 0;
}
@@ -372,6 +411,7 @@ EXPORT_SYMBOL(rfkill_register);
*/
void rfkill_unregister(struct rfkill *rfkill)
{
+ rfkill_led_trigger_unregister(rfkill);
device_del(&rfkill->dev);
rfkill_remove_switch(rfkill);
put_device(&rfkill->dev);
Index: wireless-2.6/net/rfkill/Kconfig
===================================================================
--- wireless-2.6.orig/net/rfkill/Kconfig 2007-09-26 17:22:49.000000000 +0200
+++ wireless-2.6/net/rfkill/Kconfig 2007-09-27 16:31:41.000000000 +0200
@@ -22,3 +22,10 @@ config RFKILL_INPUT
To compile this driver as a module, choose M here: the
module will be called rfkill-input.
+
+# LED trigger support
+config RFKILL_LEDS
+ bool
+ depends on RFKILL && LEDS_TRIGGERS
+ default y
+
-
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