diff options
Diffstat (limited to 'arch/arm/kernel/leds.c')
-rw-r--r-- | arch/arm/kernel/leds.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/arch/arm/kernel/leds.c b/arch/arm/kernel/leds.c index 1911dae19e4..2050399ebd0 100644 --- a/arch/arm/kernel/leds.c +++ b/arch/arm/kernel/leds.c @@ -10,6 +10,8 @@ #include <linux/export.h> #include <linux/init.h> #include <linux/device.h> +#include <linux/notifier.h> +#include <linux/cpu.h> #include <linux/syscore_ops.h> #include <linux/string.h> @@ -103,6 +105,25 @@ static struct syscore_ops leds_syscore_ops = { .resume = leds_resume, }; +static int leds_idle_notifier(struct notifier_block *nb, unsigned long val, + void *data) +{ + switch (val) { + case IDLE_START: + leds_event(led_idle_start); + break; + case IDLE_END: + leds_event(led_idle_end); + break; + } + + return 0; +} + +static struct notifier_block leds_idle_nb = { + .notifier_call = leds_idle_notifier, +}; + static int __init leds_init(void) { int ret; @@ -111,8 +132,11 @@ static int __init leds_init(void) ret = device_register(&leds_device); if (ret == 0) ret = device_create_file(&leds_device, &dev_attr_event); - if (ret == 0) + if (ret == 0) { register_syscore_ops(&leds_syscore_ops); + idle_notifier_register(&leds_idle_nb); + } + return ret; } |