summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/83xx/mpc837x_mds.c
blob: 51df7e7546985b044893a6380fcd748588c978dc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
/*
 * arch/powerpc/platforms/83xx/mpc837x_mds.c
 *
 * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
 *
 * MPC837x MDS board specific routines
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation;  either version 2 of the License, or (at your
 * option) any later version.
 */

#include <linux/pci.h>
#include <linux/of.h>
#include <linux/of_platform.h>

#include <asm/time.h>
#include <asm/ipic.h>
#include <asm/udbg.h>
#include <asm/prom.h>
#include <sysdev/fsl_pci.h>

#include "mpc83xx.h"

#define BCSR12_USB_SER_MASK	0x8a
#define BCSR12_USB_SER_PIN	0x80
#define BCSR12_USB_SER_DEVICE	0x02

static int mpc837xmds_usb_cfg(void)
{
	struct device_node *np;
	const void *phy_type, *mode;
	void __iomem *bcsr_regs = NULL;
	u8 bcsr12;
	int ret;

	ret = mpc837x_usb_cfg();
	if (ret)
		return ret;
	/* Map BCSR area */
	np = of_find_compatible_node(NULL, NULL, "fsl,mpc837xmds-bcsr");
	if (np) {
		bcsr_regs = of_iomap(np, 0);
		of_node_put(np);
	}
	if (!bcsr_regs)
		return -1;

	np = of_find_node_by_name(NULL, "usb");
	if (!np)
		return -ENODEV;
	phy_type = of_get_property(np, "phy_type", NULL);
	if (phy_type && !strcmp(phy_type, "ulpi")) {
		clrbits8(bcsr_regs + 12, BCSR12_USB_SER_PIN);
	} else if (phy_type && !strcmp(phy_type, "serial")) {
		mode = of_get_property(np, "dr_mode", NULL);
		bcsr12 = in_8(bcsr_regs + 12) & ~BCSR12_USB_SER_MASK;
		bcsr12 |= BCSR12_USB_SER_PIN;
		if (mode && !strcmp(mode, "peripheral"))
			bcsr12 |= BCSR12_USB_SER_DEVICE;
		out_8(bcsr_regs + 12, bcsr12);
	} else {
		printk(KERN_ERR "USB DR: unsupported PHY\n");
	}

	of_node_put(np);
	iounmap(bcsr_regs);
	return 0;
}

/* ************************************************************************
 *
 * Setup the architecture
 *
 */
static void __init mpc837x_mds_setup_arch(void)
{
#ifdef CONFIG_PCI
	struct device_node *np;
#endif

	if (ppc_md.progress)
		ppc_md.progress("mpc837x_mds_setup_arch()", 0);

#ifdef CONFIG_PCI
	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
		mpc83xx_add_bridge(np);
	for_each_compatible_node(np, "pci", "fsl,mpc8314-pcie")
		mpc83xx_add_bridge(np);
#endif
	mpc837xmds_usb_cfg();
}

static struct of_device_id mpc837x_ids[] = {
	{ .type = "soc", },
	{ .compatible = "soc", },
	{ .compatible = "simple-bus", },
	{ .compatible = "gianfar", },
	{},
};

static int __init mpc837x_declare_of_platform_devices(void)
{
	/* Publish of_device */
	of_platform_bus_probe(NULL, mpc837x_ids, NULL);

	return 0;
}
machine_device_initcall(mpc837x_mds, mpc837x_declare_of_platform_devices);

static void __init mpc837x_mds_init_IRQ(void)
{
	struct device_node *np;

	np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
	if (!np)
		return;

	ipic_init(np, 0);

	/* Initialize the default interrupt mapping priorities,
	 * in case the boot rom changed something on us.
	 */
	ipic_set_default_priority();
}

/*
 * Called very early, MMU is off, device-tree isn't unflattened
 */
static int __init mpc837x_mds_probe(void)
{
        unsigned long root = of_get_flat_dt_root();

        return of_flat_dt_is_compatible(root, "fsl,mpc837xmds");
}

define_machine(mpc837x_mds) {
	.name			= "MPC837x MDS",
	.probe			= mpc837x_mds_probe,
	.setup_arch		= mpc837x_mds_setup_arch,
	.init_IRQ		= mpc837x_mds_init_IRQ,
	.get_irq		= ipic_get_irq,
	.restart		= mpc83xx_restart,
	.time_init		= mpc83xx_time_init,
	.calibrate_decr		= generic_calibrate_decr,
	.progress		= udbg_progress,
};