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| author | Michael Buesch <mb@bu3sch.de> | 2007-09-27 21:33:12 +0200 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-10 16:54:10 -0700 |
| commit | 135900c182c321a4888ec496b014e6707272faca (patch) | |
| tree | d17a3e12bf2e047c7a627f61e623e40dfbad87bf /net/rfkill | |
| parent | 937a049dd903bd810d858d0303cf86af9eb08b6f (diff) | |
| download | lwn-135900c182c321a4888ec496b014e6707272faca.tar.gz lwn-135900c182c321a4888ec496b014e6707272faca.zip | |
[RFKILL]: Add support for an rfkill LED.
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>
Diffstat (limited to 'net/rfkill')
| -rw-r--r-- | net/rfkill/Kconfig | 7 | ||||
| -rw-r--r-- | net/rfkill/rfkill.c | 42 |
2 files changed, 48 insertions, 1 deletions
diff --git a/net/rfkill/Kconfig b/net/rfkill/Kconfig index d28a6d9303e4..7f807b30cfbb 100644 --- a/net/rfkill/Kconfig +++ b/net/rfkill/Kconfig @@ -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 + diff --git a/net/rfkill/rfkill.c b/net/rfkill/rfkill.c index 637a9f0c7655..a8c5e0b914e4 100644 --- a/net/rfkill/rfkill.c +++ b/net/rfkill/rfkill.c @@ -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 rfkill *rfkill, 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 *rfkill) 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); |