From 2bfb646cdf348cb77c572f06d5b9d17ea205c7e2 Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Fri, 31 Mar 2006 02:31:16 -0800 Subject: [PATCH] LED: Add IDE disk activity LED trigger Add an LED trigger for IDE disk activity to the ide-disk driver. Signed-off-by: Richard Purdie Acked-by: Bartlomiej Zolnierkiewicz Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/leds/ledtrig-ide-disk.c | 62 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 drivers/leds/ledtrig-ide-disk.c (limited to 'drivers/leds/ledtrig-ide-disk.c') diff --git a/drivers/leds/ledtrig-ide-disk.c b/drivers/leds/ledtrig-ide-disk.c new file mode 100644 index 0000000..fa65188 --- /dev/null +++ b/drivers/leds/ledtrig-ide-disk.c @@ -0,0 +1,62 @@ +/* + * LED IDE-Disk Activity Trigger + * + * Copyright 2006 Openedhand Ltd. + * + * Author: Richard Purdie + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include +#include +#include +#include +#include + +static void ledtrig_ide_timerfunc(unsigned long data); + +DEFINE_LED_TRIGGER(ledtrig_ide); +static DEFINE_TIMER(ledtrig_ide_timer, ledtrig_ide_timerfunc, 0, 0); +static int ide_activity; +static int ide_lastactivity; + +void ledtrig_ide_activity(void) +{ + ide_activity++; + if (!timer_pending(&ledtrig_ide_timer)) + mod_timer(&ledtrig_ide_timer, jiffies + msecs_to_jiffies(10)); +} +EXPORT_SYMBOL(ledtrig_ide_activity); + +static void ledtrig_ide_timerfunc(unsigned long data) +{ + if (ide_lastactivity != ide_activity) { + ide_lastactivity = ide_activity; + led_trigger_event(ledtrig_ide, LED_FULL); + mod_timer(&ledtrig_ide_timer, jiffies + msecs_to_jiffies(10)); + } else { + led_trigger_event(ledtrig_ide, LED_OFF); + } +} + +static int __init ledtrig_ide_init(void) +{ + led_trigger_register_simple("ide-disk", &ledtrig_ide); + return 0; +} + +static void __exit ledtrig_ide_exit(void) +{ + led_trigger_unregister_simple(ledtrig_ide); +} + +module_init(ledtrig_ide_init); +module_exit(ledtrig_ide_exit); + +MODULE_AUTHOR("Richard Purdie "); +MODULE_DESCRIPTION("LED IDE Disk Activity Trigger"); +MODULE_LICENSE("GPL"); -- cgit v1.1