Merge branches 'release', 'cpuidle-2.6.25' and 'idle' into release
[linux-2.6] / arch / powerpc / platforms / 83xx / mpc837x_mds.c
1 /*
2  * arch/powerpc/platforms/83xx/mpc837x_mds.c
3  *
4  * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
5  *
6  * MPC837x MDS board specific routines
7  *
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms of the GNU General Public License as published by the
10  * Free Software Foundation;  either version 2 of the License, or (at your
11  * option) any later version.
12  */
13
14 #include <linux/pci.h>
15 #include <linux/of.h>
16 #include <linux/of_platform.h>
17
18 #include <asm/time.h>
19 #include <asm/ipic.h>
20 #include <asm/udbg.h>
21 #include <asm/prom.h>
22
23 #include "mpc83xx.h"
24
25 #define BCSR12_USB_SER_MASK     0x8a
26 #define BCSR12_USB_SER_PIN      0x80
27 #define BCSR12_USB_SER_DEVICE   0x02
28 extern int mpc837x_usb_cfg(void);
29
30 static int mpc837xmds_usb_cfg(void)
31 {
32         struct device_node *np;
33         const void *phy_type, *mode;
34         void __iomem *bcsr_regs = NULL;
35         u8 bcsr12;
36         int ret;
37
38         ret = mpc837x_usb_cfg();
39         if (ret)
40                 return ret;
41         /* Map BCSR area */
42         np = of_find_node_by_name(NULL, "bcsr");
43         if (np) {
44                 struct resource res;
45
46                 of_address_to_resource(np, 0, &res);
47                 bcsr_regs = ioremap(res.start, res.end - res.start + 1);
48                 of_node_put(np);
49         }
50         if (!bcsr_regs)
51                 return -1;
52
53         np = of_find_node_by_name(NULL, "usb");
54         if (!np)
55                 return -ENODEV;
56         phy_type = of_get_property(np, "phy_type", NULL);
57         if (phy_type && !strcmp(phy_type, "ulpi")) {
58                 clrbits8(bcsr_regs + 12, BCSR12_USB_SER_PIN);
59         } else if (phy_type && !strcmp(phy_type, "serial")) {
60                 mode = of_get_property(np, "dr_mode", NULL);
61                 bcsr12 = in_8(bcsr_regs + 12) & ~BCSR12_USB_SER_MASK;
62                 bcsr12 |= BCSR12_USB_SER_PIN;
63                 if (mode && !strcmp(mode, "peripheral"))
64                         bcsr12 |= BCSR12_USB_SER_DEVICE;
65                 out_8(bcsr_regs + 12, bcsr12);
66         } else {
67                 printk(KERN_ERR "USB DR: unsupported PHY\n");
68         }
69
70         of_node_put(np);
71         iounmap(bcsr_regs);
72         return 0;
73 }
74
75 /* ************************************************************************
76  *
77  * Setup the architecture
78  *
79  */
80 static void __init mpc837x_mds_setup_arch(void)
81 {
82 #ifdef CONFIG_PCI
83         struct device_node *np;
84 #endif
85
86         if (ppc_md.progress)
87                 ppc_md.progress("mpc837x_mds_setup_arch()", 0);
88
89 #ifdef CONFIG_PCI
90         for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
91                 mpc83xx_add_bridge(np);
92 #endif
93         mpc837xmds_usb_cfg();
94 }
95
96 static struct of_device_id mpc837x_ids[] = {
97         { .type = "soc", },
98         { .compatible = "soc", },
99         {},
100 };
101
102 static int __init mpc837x_declare_of_platform_devices(void)
103 {
104         /* Publish of_device */
105         of_platform_bus_probe(NULL, mpc837x_ids, NULL);
106
107         return 0;
108 }
109 machine_device_initcall(mpc837x_mds, mpc837x_declare_of_platform_devices);
110
111 static void __init mpc837x_mds_init_IRQ(void)
112 {
113         struct device_node *np;
114
115         np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
116         if (!np)
117                 return;
118
119         ipic_init(np, 0);
120
121         /* Initialize the default interrupt mapping priorities,
122          * in case the boot rom changed something on us.
123          */
124         ipic_set_default_priority();
125 }
126
127 /*
128  * Called very early, MMU is off, device-tree isn't unflattened
129  */
130 static int __init mpc837x_mds_probe(void)
131 {
132         unsigned long root = of_get_flat_dt_root();
133
134         return of_flat_dt_is_compatible(root, "fsl,mpc837xmds");
135 }
136
137 define_machine(mpc837x_mds) {
138         .name                   = "MPC837x MDS",
139         .probe                  = mpc837x_mds_probe,
140         .setup_arch             = mpc837x_mds_setup_arch,
141         .init_IRQ               = mpc837x_mds_init_IRQ,
142         .get_irq                = ipic_get_irq,
143         .restart                = mpc83xx_restart,
144         .time_init              = mpc83xx_time_init,
145         .calibrate_decr         = generic_calibrate_decr,
146         .progress               = udbg_progress,
147 };