diff options
Diffstat (limited to 'drivers/leds/trigger/ledtrig-disk.c')
| -rw-r--r-- | drivers/leds/trigger/ledtrig-disk.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/leds/trigger/ledtrig-disk.c b/drivers/leds/trigger/ledtrig-disk.c new file mode 100644 index 000000000..074191078 --- /dev/null +++ b/drivers/leds/trigger/ledtrig-disk.c @@ -0,0 +1,47 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * LED Disk Activity Trigger + * + * Copyright 2006 Openedhand Ltd. + * + * Author: Richard Purdie <rpurdie@openedhand.com> + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/leds.h> + +#define BLINK_DELAY 30 + +DEFINE_LED_TRIGGER(ledtrig_disk); +DEFINE_LED_TRIGGER(ledtrig_disk_read); +DEFINE_LED_TRIGGER(ledtrig_disk_write); +DEFINE_LED_TRIGGER(ledtrig_ide); + +void ledtrig_disk_activity(bool write) +{ + unsigned long blink_delay = BLINK_DELAY; + + led_trigger_blink_oneshot(ledtrig_disk, + &blink_delay, &blink_delay, 0); + led_trigger_blink_oneshot(ledtrig_ide, + &blink_delay, &blink_delay, 0); + if (write) + led_trigger_blink_oneshot(ledtrig_disk_write, + &blink_delay, &blink_delay, 0); + else + led_trigger_blink_oneshot(ledtrig_disk_read, + &blink_delay, &blink_delay, 0); +} +EXPORT_SYMBOL(ledtrig_disk_activity); + +static int __init ledtrig_disk_init(void) +{ + led_trigger_register_simple("disk-activity", &ledtrig_disk); + led_trigger_register_simple("disk-read", &ledtrig_disk_read); + led_trigger_register_simple("disk-write", &ledtrig_disk_write); + led_trigger_register_simple("ide-disk", &ledtrig_ide); + + return 0; +} +device_initcall(ledtrig_disk_init); |