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Diffstat (limited to 'drivers/leds/ledtrig-heartbeat.c')
-rw-r--r--drivers/leds/ledtrig-heartbeat.c161
1 files changed, 0 insertions, 161 deletions
diff --git a/drivers/leds/ledtrig-heartbeat.c b/drivers/leds/ledtrig-heartbeat.c
deleted file mode 100644
index 1edc7463ce83..000000000000
--- a/drivers/leds/ledtrig-heartbeat.c
+++ /dev/null
@@ -1,161 +0,0 @@
-/*
- * LED Heartbeat Trigger
- *
- * Copyright (C) 2006 Atsushi Nemoto <anemo@mba.ocn.ne.jp>
- *
- * Based on Richard Purdie's ledtrig-timer.c and some arch's
- * CONFIG_HEARTBEAT code.
- *
- * 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 <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/timer.h>
-#include <linux/sched.h>
-#include <linux/leds.h>
-#include <linux/reboot.h>
-#include "leds.h"
-
-static int panic_heartbeats;
-
-struct heartbeat_trig_data {
- unsigned int phase;
- unsigned int period;
- struct timer_list timer;
-};
-
-static void led_heartbeat_function(unsigned long data)
-{
- struct led_classdev *led_cdev = (struct led_classdev *) data;
- struct heartbeat_trig_data *heartbeat_data = led_cdev->trigger_data;
- unsigned long brightness = LED_OFF;
- unsigned long delay = 0;
-
- if (unlikely(panic_heartbeats)) {
- led_set_brightness(led_cdev, LED_OFF);
- return;
- }
-
- /* acts like an actual heart beat -- ie thump-thump-pause... */
- switch (heartbeat_data->phase) {
- case 0:
- /*
- * The hyperbolic function below modifies the
- * heartbeat period length in dependency of the
- * current (1min) load. It goes through the points
- * f(0)=1260, f(1)=860, f(5)=510, f(inf)->300.
- */
- heartbeat_data->period = 300 +
- (6720 << FSHIFT) / (5 * avenrun[0] + (7 << FSHIFT));
- heartbeat_data->period =
- msecs_to_jiffies(heartbeat_data->period);
- delay = msecs_to_jiffies(70);
- heartbeat_data->phase++;
- brightness = led_cdev->max_brightness;
- break;
- case 1:
- delay = heartbeat_data->period / 4 - msecs_to_jiffies(70);
- heartbeat_data->phase++;
- break;
- case 2:
- delay = msecs_to_jiffies(70);
- heartbeat_data->phase++;
- brightness = led_cdev->max_brightness;
- break;
- default:
- delay = heartbeat_data->period - heartbeat_data->period / 4 -
- msecs_to_jiffies(70);
- heartbeat_data->phase = 0;
- break;
- }
-
- __led_set_brightness(led_cdev, brightness);
- mod_timer(&heartbeat_data->timer, jiffies + delay);
-}
-
-static void heartbeat_trig_activate(struct led_classdev *led_cdev)
-{
- struct heartbeat_trig_data *heartbeat_data;
-
- heartbeat_data = kzalloc(sizeof(*heartbeat_data), GFP_KERNEL);
- if (!heartbeat_data)
- return;
-
- led_cdev->trigger_data = heartbeat_data;
- setup_timer(&heartbeat_data->timer,
- led_heartbeat_function, (unsigned long) led_cdev);
- heartbeat_data->phase = 0;
- led_heartbeat_function(heartbeat_data->timer.data);
- led_cdev->activated = true;
-}
-
-static void heartbeat_trig_deactivate(struct led_classdev *led_cdev)
-{
- struct heartbeat_trig_data *heartbeat_data = led_cdev->trigger_data;
-
- if (led_cdev->activated) {
- del_timer_sync(&heartbeat_data->timer);
- kfree(heartbeat_data);
- led_cdev->activated = false;
- }
-}
-
-static struct led_trigger heartbeat_led_trigger = {
- .name = "heartbeat",
- .activate = heartbeat_trig_activate,
- .deactivate = heartbeat_trig_deactivate,
-};
-
-static int heartbeat_reboot_notifier(struct notifier_block *nb,
- unsigned long code, void *unused)
-{
- led_trigger_unregister(&heartbeat_led_trigger);
- return NOTIFY_DONE;
-}
-
-static int heartbeat_panic_notifier(struct notifier_block *nb,
- unsigned long code, void *unused)
-{
- panic_heartbeats = 1;
- return NOTIFY_DONE;
-}
-
-static struct notifier_block heartbeat_reboot_nb = {
- .notifier_call = heartbeat_reboot_notifier,
-};
-
-static struct notifier_block heartbeat_panic_nb = {
- .notifier_call = heartbeat_panic_notifier,
-};
-
-static int __init heartbeat_trig_init(void)
-{
- int rc = led_trigger_register(&heartbeat_led_trigger);
-
- if (!rc) {
- atomic_notifier_chain_register(&panic_notifier_list,
- &heartbeat_panic_nb);
- register_reboot_notifier(&heartbeat_reboot_nb);
- }
- return rc;
-}
-
-static void __exit heartbeat_trig_exit(void)
-{
- unregister_reboot_notifier(&heartbeat_reboot_nb);
- atomic_notifier_chain_unregister(&panic_notifier_list,
- &heartbeat_panic_nb);
- led_trigger_unregister(&heartbeat_led_trigger);
-}
-
-module_init(heartbeat_trig_init);
-module_exit(heartbeat_trig_exit);
-
-MODULE_AUTHOR("Atsushi Nemoto <anemo@mba.ocn.ne.jp>");
-MODULE_DESCRIPTION("Heartbeat LED trigger");
-MODULE_LICENSE("GPL");