Linux 2.6.28-rc5
[cris-mirror.git] / arch / powerpc / platforms / 83xx / mpc837x_mds.c
blob8bb13c807142c9155940da690e26cdc6b8de48cc
1 /*
2 * arch/powerpc/platforms/83xx/mpc837x_mds.c
4 * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
6 * MPC837x MDS board specific routines
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.
14 #include <linux/pci.h>
15 #include <linux/of.h>
16 #include <linux/of_platform.h>
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>
24 #include "mpc83xx.h"
26 #define BCSR12_USB_SER_MASK 0x8a
27 #define BCSR12_USB_SER_PIN 0x80
28 #define BCSR12_USB_SER_DEVICE 0x02
29 extern int mpc837x_usb_cfg(void);
31 static int mpc837xmds_usb_cfg(void)
33 struct device_node *np;
34 const void *phy_type, *mode;
35 void __iomem *bcsr_regs = NULL;
36 u8 bcsr12;
37 int ret;
39 ret = mpc837x_usb_cfg();
40 if (ret)
41 return ret;
42 /* Map BCSR area */
43 np = of_find_compatible_node(NULL, NULL, "fsl,mpc837xmds-bcsr");
44 if (np) {
45 bcsr_regs = of_iomap(np, 0);
46 of_node_put(np);
48 if (!bcsr_regs)
49 return -1;
51 np = of_find_node_by_name(NULL, "usb");
52 if (!np)
53 return -ENODEV;
54 phy_type = of_get_property(np, "phy_type", NULL);
55 if (phy_type && !strcmp(phy_type, "ulpi")) {
56 clrbits8(bcsr_regs + 12, BCSR12_USB_SER_PIN);
57 } else if (phy_type && !strcmp(phy_type, "serial")) {
58 mode = of_get_property(np, "dr_mode", NULL);
59 bcsr12 = in_8(bcsr_regs + 12) & ~BCSR12_USB_SER_MASK;
60 bcsr12 |= BCSR12_USB_SER_PIN;
61 if (mode && !strcmp(mode, "peripheral"))
62 bcsr12 |= BCSR12_USB_SER_DEVICE;
63 out_8(bcsr_regs + 12, bcsr12);
64 } else {
65 printk(KERN_ERR "USB DR: unsupported PHY\n");
68 of_node_put(np);
69 iounmap(bcsr_regs);
70 return 0;
73 /* ************************************************************************
75 * Setup the architecture
78 static void __init mpc837x_mds_setup_arch(void)
80 #ifdef CONFIG_PCI
81 struct device_node *np;
82 #endif
84 if (ppc_md.progress)
85 ppc_md.progress("mpc837x_mds_setup_arch()", 0);
87 #ifdef CONFIG_PCI
88 for_each_compatible_node(np, "pci", "fsl,mpc8349-pci") {
89 if (!of_device_is_available(np)) {
90 pr_warning("%s: disabled by the firmware.\n",
91 np->full_name);
92 continue;
94 mpc83xx_add_bridge(np);
96 #endif
97 mpc837xmds_usb_cfg();
100 static struct of_device_id mpc837x_ids[] = {
101 { .type = "soc", },
102 { .compatible = "soc", },
103 { .compatible = "simple-bus", },
107 static int __init mpc837x_declare_of_platform_devices(void)
109 /* Publish of_device */
110 of_platform_bus_probe(NULL, mpc837x_ids, NULL);
112 return 0;
114 machine_device_initcall(mpc837x_mds, mpc837x_declare_of_platform_devices);
116 static void __init mpc837x_mds_init_IRQ(void)
118 struct device_node *np;
120 np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
121 if (!np)
122 return;
124 ipic_init(np, 0);
126 /* Initialize the default interrupt mapping priorities,
127 * in case the boot rom changed something on us.
129 ipic_set_default_priority();
133 * Called very early, MMU is off, device-tree isn't unflattened
135 static int __init mpc837x_mds_probe(void)
137 unsigned long root = of_get_flat_dt_root();
139 return of_flat_dt_is_compatible(root, "fsl,mpc837xmds");
142 define_machine(mpc837x_mds) {
143 .name = "MPC837x MDS",
144 .probe = mpc837x_mds_probe,
145 .setup_arch = mpc837x_mds_setup_arch,
146 .init_IRQ = mpc837x_mds_init_IRQ,
147 .get_irq = ipic_get_irq,
148 .restart = mpc83xx_restart,
149 .time_init = mpc83xx_time_init,
150 .calibrate_decr = generic_calibrate_decr,
151 .progress = udbg_progress,