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833e31e7 LY |
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 | ||
e10241d8 LY |
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 | ||
833e31e7 LY |
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 | |
e10241d8 | 93 | mpc837xmds_usb_cfg(); |
833e31e7 LY |
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 | { | |
833e31e7 LY |
104 | /* Publish of_device */ |
105 | of_platform_bus_probe(NULL, mpc837x_ids, NULL); | |
106 | ||
107 | return 0; | |
108 | } | |
6392f184 | 109 | machine_device_initcall(mpc837x_mds, mpc837x_declare_of_platform_devices); |
833e31e7 LY |
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 | }; |