Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[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 #include <sysdev/fsl_pci.h>
23
24 #include "mpc83xx.h"
25
26 #define BCSR12_USB_SER_MASK     0x8a
27 #define BCSR12_USB_SER_PIN      0x80
28 #define BCSR12_USB_SER_DEVICE   0x02
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_compatible_node(NULL, NULL, "fsl,mpc837xmds-bcsr");
43         if (np) {
44                 bcsr_regs = of_iomap(np, 0);
45                 of_node_put(np);
46         }
47         if (!bcsr_regs)
48                 return -1;
49
50         np = of_find_node_by_name(NULL, "usb");
51         if (!np)
52                 return -ENODEV;
53         phy_type = of_get_property(np, "phy_type", NULL);
54         if (phy_type && !strcmp(phy_type, "ulpi")) {
55                 clrbits8(bcsr_regs + 12, BCSR12_USB_SER_PIN);
56         } else if (phy_type && !strcmp(phy_type, "serial")) {
57                 mode = of_get_property(np, "dr_mode", NULL);
58                 bcsr12 = in_8(bcsr_regs + 12) & ~BCSR12_USB_SER_MASK;
59                 bcsr12 |= BCSR12_USB_SER_PIN;
60                 if (mode && !strcmp(mode, "peripheral"))
61                         bcsr12 |= BCSR12_USB_SER_DEVICE;
62                 out_8(bcsr_regs + 12, bcsr12);
63         } else {
64                 printk(KERN_ERR "USB DR: unsupported PHY\n");
65         }
66
67         of_node_put(np);
68         iounmap(bcsr_regs);
69         return 0;
70 }
71
72 /* ************************************************************************
73  *
74  * Setup the architecture
75  *
76  */
77 static void __init mpc837x_mds_setup_arch(void)
78 {
79 #ifdef CONFIG_PCI
80         struct device_node *np;
81 #endif
82
83         if (ppc_md.progress)
84                 ppc_md.progress("mpc837x_mds_setup_arch()", 0);
85
86 #ifdef CONFIG_PCI
87         for_each_compatible_node(np, "pci", "fsl,mpc8349-pci") {
88                 if (!of_device_is_available(np)) {
89                         pr_warning("%s: disabled by the firmware.\n",
90                                    np->full_name);
91                         continue;
92                 }
93                 mpc83xx_add_bridge(np);
94         }
95 #endif
96         mpc837xmds_usb_cfg();
97 }
98
99 static struct of_device_id mpc837x_ids[] = {
100         { .type = "soc", },
101         { .compatible = "soc", },
102         { .compatible = "simple-bus", },
103         {},
104 };
105
106 static int __init mpc837x_declare_of_platform_devices(void)
107 {
108         /* Publish of_device */
109         of_platform_bus_probe(NULL, mpc837x_ids, NULL);
110
111         return 0;
112 }
113 machine_device_initcall(mpc837x_mds, mpc837x_declare_of_platform_devices);
114
115 static void __init mpc837x_mds_init_IRQ(void)
116 {
117         struct device_node *np;
118
119         np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
120         if (!np)
121                 return;
122
123         ipic_init(np, 0);
124
125         /* Initialize the default interrupt mapping priorities,
126          * in case the boot rom changed something on us.
127          */
128         ipic_set_default_priority();
129 }
130
131 /*
132  * Called very early, MMU is off, device-tree isn't unflattened
133  */
134 static int __init mpc837x_mds_probe(void)
135 {
136         unsigned long root = of_get_flat_dt_root();
137
138         return of_flat_dt_is_compatible(root, "fsl,mpc837xmds");
139 }
140
141 define_machine(mpc837x_mds) {
142         .name                   = "MPC837x MDS",
143         .probe                  = mpc837x_mds_probe,
144         .setup_arch             = mpc837x_mds_setup_arch,
145         .init_IRQ               = mpc837x_mds_init_IRQ,
146         .get_irq                = ipic_get_irq,
147         .restart                = mpc83xx_restart,
148         .time_init              = mpc83xx_time_init,
149         .calibrate_decr         = generic_calibrate_decr,
150         .progress               = udbg_progress,
151 };