2 * arch/arm/mach-ixp4xx/nas100d-power.c
4 * NAS 100d Power/Reset driver
6 * Copyright (C) 2005 Tower Technologies
8 * based on nas100d-io.c
9 * Copyright (C) 2004 Karen Spearel
11 * Author: Alessandro Zummo <a.zummo@towertech.it>
12 * Maintainers: http://www.nslu2-linux.org/
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
20 #include <linux/interrupt.h>
21 #include <linux/irq.h>
22 #include <linux/module.h>
23 #include <linux/reboot.h>
25 #include <asm/mach-types.h>
27 static irqreturn_t nas100d_reset_handler(int irq, void *dev_id)
29 /* Signal init to do the ctrlaltdel action, this will bypass init if
30 * it hasn't started and do a kernel_restart.
37 static int __init nas100d_power_init(void)
39 if (!(machine_is_nas100d()))
42 set_irq_type(NAS100D_RB_IRQ, IRQT_LOW);
44 if (request_irq(NAS100D_RB_IRQ, &nas100d_reset_handler,
45 IRQF_DISABLED, "NAS100D reset button", NULL) < 0) {
47 printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
56 static void __exit nas100d_power_exit(void)
58 if (!(machine_is_nas100d()))
61 free_irq(NAS100D_RB_IRQ, NULL);
64 module_init(nas100d_power_init);
65 module_exit(nas100d_power_exit);
67 MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
68 MODULE_DESCRIPTION("NAS100D Power/Reset driver");
69 MODULE_LICENSE("GPL");