[PATCH 2/2] rfkill: Create rfkill-none LED trigger
From: "João Paulo Rechi Vita" <jprvita@gmail.com>
Date: 2018-05-22 21:29:58
Also in:
linux-wireless, lkml
Subsystem:
rfkill, the rest · Maintainers:
Johannes Berg, Linus Torvalds
Creates a new trigger rfkill-none, as a complement to rfkill-any, which drives LEDs when any radio is enabled. The new trigger is meant to turn a LED ON whenever all radios are OFF, and turn it OFF otherwise. Signed-off-by: João Paulo Rechi Vita <redacted> --- net/rfkill/core.c | 27 ++++++++++++++++++++------- 1 file changed, 20 insertions(+), 7 deletions(-)
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 6d64d14f4b0a..07235520b00f 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c@@ -178,6 +178,7 @@ static void rfkill_led_trigger_unregister(struct rfkill *rfkill) } static struct led_trigger rfkill_any_led_trigger; +static struct led_trigger rfkill_none_led_trigger; static struct work_struct rfkill_global_led_trigger_work; static void rfkill_global_led_trigger_worker(struct work_struct *work)
@@ -195,6 +196,8 @@ static void rfkill_global_led_trigger_worker(struct work_struct *work) mutex_unlock(&rfkill_global_mutex); led_trigger_event(&rfkill_any_led_trigger, brightness); + led_trigger_event(&rfkill_none_led_trigger, brightness == LED_OFF ? + LED_FULL : LED_OFF); } static void rfkill_global_led_trigger_event(void)
@@ -202,22 +205,32 @@ static void rfkill_global_led_trigger_event(void) schedule_work(&rfkill_global_led_trigger_work); } -static void rfkill_global_led_trigger_activate(struct led_classdev *led_cdev) -{ - rfkill_global_led_trigger_event(); -} - static int rfkill_global_led_trigger_register(void) { + int ret; + INIT_WORK(&rfkill_global_led_trigger_work, rfkill_global_led_trigger_worker); + rfkill_any_led_trigger.name = "rfkill-any"; - rfkill_any_led_trigger.activate = rfkill_global_led_trigger_activate; - return led_trigger_register(&rfkill_any_led_trigger); + ret = led_trigger_register(&rfkill_any_led_trigger); + if (ret) + return ret; + + rfkill_none_led_trigger.name = "rfkill-none"; + ret = led_trigger_register(&rfkill_none_led_trigger); + if (ret) + led_trigger_unregister(&rfkill_any_led_trigger); + else + /* Delay activation until all global triggers are registered */ + rfkill_global_led_trigger_event(); + + return ret; } static void rfkill_global_led_trigger_unregister(void) { + led_trigger_unregister(&rfkill_none_led_trigger); led_trigger_unregister(&rfkill_any_led_trigger); cancel_work_sync(&rfkill_global_led_trigger_work); }
--
2.17.0