Merge tag 'iwlwifi-next-for-kalle-2014-12-30' of https://git.kernel.org/pub/scm/linux...
[cascardo/linux.git] / arch / mips / loongson1 / common / reset.c
1 /*
2  * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
3  *
4  * This program is free software; you can redistribute  it and/or modify it
5  * under  the terms of  the GNU General  Public License as published by the
6  * Free Software Foundation;  either version 2 of the  License, or (at your
7  * option) any later version.
8  */
9
10 #include <linux/io.h>
11 #include <linux/pm.h>
12 #include <asm/idle.h>
13 #include <asm/reboot.h>
14
15 #include <loongson1.h>
16
17 static void __iomem *wdt_base;
18
19 static void ls1x_halt(void)
20 {
21         while (1) {
22                 if (cpu_wait)
23                         cpu_wait();
24         }
25 }
26
27 static void ls1x_restart(char *command)
28 {
29         __raw_writel(0x1, wdt_base + WDT_EN);
30         __raw_writel(0x1, wdt_base + WDT_TIMER);
31         __raw_writel(0x1, wdt_base + WDT_SET);
32
33         ls1x_halt();
34 }
35
36 static void ls1x_power_off(void)
37 {
38         ls1x_halt();
39 }
40
41 static int __init ls1x_reboot_setup(void)
42 {
43         wdt_base = ioremap_nocache(LS1X_WDT_BASE, 0x0f);
44         if (!wdt_base)
45                 panic("Failed to remap watchdog registers");
46
47         _machine_restart = ls1x_restart;
48         _machine_halt = ls1x_halt;
49         pm_power_off = ls1x_power_off;
50
51         return 0;
52 }
53
54 arch_initcall(ls1x_reboot_setup);