Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6] / arch / arm / mach-iop32x / glantank.c
1 /*
2  * arch/arm/mach-iop32x/glantank.c
3  *
4  * Board support code for the GLAN Tank.
5  *
6  * Copyright (C) 2006 Martin Michlmayr <tbm@cyrius.com>
7  * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
8  *
9  * This program is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU General Public License as published by the
11  * Free Software Foundation; either version 2 of the License, or (at your
12  * option) any later version.
13  */
14
15 #include <linux/mm.h>
16 #include <linux/init.h>
17 #include <linux/kernel.h>
18 #include <linux/pci.h>
19 #include <linux/string.h>
20 #include <linux/slab.h>
21 #include <linux/serial_core.h>
22 #include <linux/serial_8250.h>
23 #include <linux/mtd/physmap.h>
24 #include <linux/platform_device.h>
25 #include <asm/hardware.h>
26 #include <asm/io.h>
27 #include <asm/irq.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/map.h>
30 #include <asm/mach/pci.h>
31 #include <asm/mach/time.h>
32 #include <asm/mach-types.h>
33 #include <asm/page.h>
34
35 /*
36  * GLAN Tank timer tick configuration.
37  */
38 static void __init glantank_timer_init(void)
39 {
40         /* 33.333 MHz crystal.  */
41         iop3xx_init_time(200000000);
42 }
43
44 static struct sys_timer glantank_timer = {
45         .init           = glantank_timer_init,
46         .offset         = iop3xx_gettimeoffset,
47 };
48
49
50 /*
51  * GLAN Tank I/O.
52  */
53 static struct map_desc glantank_io_desc[] __initdata = {
54         {       /* on-board devices */
55                 .virtual        = GLANTANK_UART,
56                 .pfn            = __phys_to_pfn(GLANTANK_UART),
57                 .length         = 0x00100000,
58                 .type           = MT_DEVICE
59         },
60 };
61
62 void __init glantank_map_io(void)
63 {
64         iop3xx_map_io();
65         iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
66 }
67
68
69 /*
70  * GLAN Tank PCI.
71  */
72 #define INTA    IRQ_IOP32X_XINT0
73 #define INTB    IRQ_IOP32X_XINT1
74 #define INTC    IRQ_IOP32X_XINT2
75 #define INTD    IRQ_IOP32X_XINT3
76
77 static inline int __init
78 glantank_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
79 {
80         static int pci_irq_table[][4] = {
81                 /*
82                  * PCI IDSEL/INTPIN->INTLINE
83                  * A       B       C       D
84                  */
85                 {INTD, INTD, INTD, INTD}, /* UART (8250) */
86                 {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
87                 {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
88                 {INTC, INTC, INTC, INTC}, /* USB (NEC) */
89         };
90
91         BUG_ON(pin < 1 || pin > 4);
92
93         return pci_irq_table[slot % 4][pin - 1];
94 }
95
96 static struct hw_pci glantank_pci __initdata = {
97         .swizzle        = pci_std_swizzle,
98         .nr_controllers = 1,
99         .setup          = iop3xx_pci_setup,
100         .preinit        = iop3xx_pci_preinit,
101         .scan           = iop3xx_pci_scan_bus,
102         .map_irq        = glantank_pci_map_irq,
103 };
104
105 static int __init glantank_pci_init(void)
106 {
107         if (machine_is_glantank())
108                 pci_common_init(&glantank_pci);
109
110         return 0;
111 }
112
113 subsys_initcall(glantank_pci_init);
114
115
116 /*
117  * GLAN Tank machine initialization.
118  */
119 static struct physmap_flash_data glantank_flash_data = {
120         .width          = 1,
121 };
122
123 static struct resource glantank_flash_resource = {
124         .start          = 0xf0000000,
125         .end            = 0xf007ffff,
126         .flags          = IORESOURCE_MEM,
127 };
128
129 static struct platform_device glantank_flash_device = {
130         .name           = "physmap-flash",
131         .id             = 0,
132         .dev            = {
133                 .platform_data  = &glantank_flash_data,
134         },
135         .num_resources  = 1,
136         .resource       = &glantank_flash_resource,
137 };
138
139 static struct plat_serial8250_port glantank_serial_port[] = {
140         {
141                 .mapbase        = GLANTANK_UART,
142                 .membase        = (char *)GLANTANK_UART,
143                 .irq            = IRQ_IOP32X_XINT3,
144                 .flags          = UPF_SKIP_TEST,
145                 .iotype         = UPIO_MEM,
146                 .regshift       = 0,
147                 .uartclk        = 1843200,
148         },
149         { },
150 };
151
152 static struct resource glantank_uart_resource = {
153         .start          = GLANTANK_UART,
154         .end            = GLANTANK_UART + 7,
155         .flags          = IORESOURCE_MEM,
156 };
157
158 static struct platform_device glantank_serial_device = {
159         .name           = "serial8250",
160         .id             = PLAT8250_DEV_PLATFORM,
161         .dev            = {
162                 .platform_data          = glantank_serial_port,
163         },
164         .num_resources  = 1,
165         .resource       = &glantank_uart_resource,
166 };
167
168 static void glantank_power_off(void)
169 {
170         __raw_writeb(0x01, 0xfe8d0004);
171
172         while (1)
173                 ;
174 }
175
176 static void __init glantank_init_machine(void)
177 {
178         platform_device_register(&iop3xx_i2c0_device);
179         platform_device_register(&iop3xx_i2c1_device);
180         platform_device_register(&glantank_flash_device);
181         platform_device_register(&glantank_serial_device);
182
183         pm_power_off = glantank_power_off;
184 }
185
186 MACHINE_START(GLANTANK, "GLAN Tank")
187         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
188         .phys_io        = GLANTANK_UART,
189         .io_pg_offst    = ((GLANTANK_UART) >> 18) & 0xfffc,
190         .boot_params    = 0xa0000100,
191         .map_io         = glantank_map_io,
192         .init_irq       = iop32x_init_irq,
193         .timer          = &glantank_timer,
194         .init_machine   = glantank_init_machine,
195 MACHINE_END