1/*
2 * Maxtor Shared Storage II Board Setup
3 *
4 * Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11
12#include <linux/kernel.h>
13#include <linux/init.h>
14#include <linux/platform_device.h>
15#include <linux/pci.h>
16#include <linux/irq.h>
17#include <asm/mach-types.h>
18#include <asm/mach/arch.h>
19#include <asm/mach/pci.h>
20#include <mach/orion5x.h>
21#include <mach/bridge-regs.h>
22#include "common.h"
23
24/*****************************************************************************
25 * Maxtor Shared Storage II Info
26 ****************************************************************************/
27
28/****************************************************************************
29 * PCI setup
30 ****************************************************************************/
31static int __init mss2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
32{
33	int irq;
34
35	/*
36	 * Check for devices with hard-wired IRQs.
37	 */
38	irq = orion5x_pci_map_irq(dev, slot, pin);
39	if (irq != -1)
40		return irq;
41
42	return -1;
43}
44
45static struct hw_pci mss2_pci __initdata = {
46	.nr_controllers = 2,
47	.setup		= orion5x_pci_sys_setup,
48	.scan		= orion5x_pci_sys_scan_bus,
49	.map_irq	= mss2_pci_map_irq,
50};
51
52static int __init mss2_pci_init(void)
53{
54	if (machine_is_mss2())
55		pci_common_init(&mss2_pci);
56
57	return 0;
58}
59subsys_initcall(mss2_pci_init);
60
61/*****************************************************************************
62 * MSS2 power off method
63 ****************************************************************************/
64/*
65 * On the Maxtor Shared Storage II, the shutdown process is the following :
66 * - Userland modifies U-boot env to tell U-boot to go idle at next boot
67 * - The board reboots
68 * - U-boot starts and go into an idle mode until the user press "power"
69 */
70static void mss2_power_off(void)
71{
72	u32 reg;
73
74	/*
75	 * Enable and issue soft reset
76	 */
77	reg = readl(RSTOUTn_MASK);
78	reg |= 1 << 2;
79	writel(reg, RSTOUTn_MASK);
80
81	reg = readl(CPU_SOFT_RESET);
82	reg |= 1;
83	writel(reg, CPU_SOFT_RESET);
84}
85
86void __init mss2_init(void)
87{
88	/* register mss2 specific power-off method */
89	pm_power_off = mss2_power_off;
90}
91