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[RFKILL]: Add support for an rfkill LED.

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This adds a LED trigger.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Acked-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>
This commit is contained in:
Michael Buesch 2007-09-27 21:33:12 +02:00 • committed by David S. Miller
parent 937a049dd9
commit 135900c182
3 changed files with 69 additions and 1 deletions
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21
include/linux/rfkill.h
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@ -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;
};
@ -84,4 +90,19 @@ void rfkill_free(struct rfkill *rfkill);
int rfkill_register(struct rfkill *rfkill);
void rfkill_unregister(struct rfkill *rfkill);
/**
* 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 */