Merge commit 'v2.6.27-rc6' into timers/hpet
[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, 2007 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/f75375s.h>
18 #include <linux/kernel.h>
19 #include <linux/pci.h>
20 #include <linux/pm.h>
21 #include <linux/string.h>
22 #include <linux/slab.h>
23 #include <linux/serial_core.h>
24 #include <linux/serial_8250.h>
25 #include <linux/mtd/physmap.h>
26 #include <linux/i2c.h>
27 #include <linux/platform_device.h>
28 #include <mach/hardware.h>
29 #include <asm/io.h>
30 #include <asm/irq.h>
31 #include <asm/mach/arch.h>
32 #include <asm/mach/map.h>
33 #include <asm/mach/pci.h>
34 #include <asm/mach/time.h>
35 #include <asm/mach-types.h>
36 #include <asm/page.h>
37 #include <mach/time.h>
38
39 /*
40  * GLAN Tank timer tick configuration.
41  */
42 static void __init glantank_timer_init(void)
43 {
44         /* 33.333 MHz crystal.  */
45         iop_init_time(200000000);
46 }
47
48 static struct sys_timer glantank_timer = {
49         .init           = glantank_timer_init,
50         .offset         = iop_gettimeoffset,
51 };
52
53
54 /*
55  * GLAN Tank I/O.
56  */
57 static struct map_desc glantank_io_desc[] __initdata = {
58         {       /* on-board devices */
59                 .virtual        = GLANTANK_UART,
60                 .pfn            = __phys_to_pfn(GLANTANK_UART),
61                 .length         = 0x00100000,
62                 .type           = MT_DEVICE
63         },
64 };
65
66 void __init glantank_map_io(void)
67 {
68         iop3xx_map_io();
69         iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
70 }
71
72
73 /*
74  * GLAN Tank PCI.
75  */
76 #define INTA    IRQ_IOP32X_XINT0
77 #define INTB    IRQ_IOP32X_XINT1
78 #define INTC    IRQ_IOP32X_XINT2
79 #define INTD    IRQ_IOP32X_XINT3
80
81 static int __init
82 glantank_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
83 {
84         static int pci_irq_table[][4] = {
85                 /*
86                  * PCI IDSEL/INTPIN->INTLINE
87                  * A       B       C       D
88                  */
89                 {INTD, INTD, INTD, INTD}, /* UART (8250) */
90                 {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
91                 {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
92                 {INTC, INTC, INTC, INTC}, /* USB (NEC) */
93         };
94
95         BUG_ON(pin < 1 || pin > 4);
96
97         return pci_irq_table[slot % 4][pin - 1];
98 }
99
100 static struct hw_pci glantank_pci __initdata = {
101         .swizzle        = pci_std_swizzle,
102         .nr_controllers = 1,
103         .setup          = iop3xx_pci_setup,
104         .preinit        = iop3xx_pci_preinit,
105         .scan           = iop3xx_pci_scan_bus,
106         .map_irq        = glantank_pci_map_irq,
107 };
108
109 static int __init glantank_pci_init(void)
110 {
111         if (machine_is_glantank())
112                 pci_common_init(&glantank_pci);
113
114         return 0;
115 }
116
117 subsys_initcall(glantank_pci_init);
118
119
120 /*
121  * GLAN Tank machine initialization.
122  */
123 static struct physmap_flash_data glantank_flash_data = {
124         .width          = 2,
125 };
126
127 static struct resource glantank_flash_resource = {
128         .start          = 0xf0000000,
129         .end            = 0xf007ffff,
130         .flags          = IORESOURCE_MEM,
131 };
132
133 static struct platform_device glantank_flash_device = {
134         .name           = "physmap-flash",
135         .id             = 0,
136         .dev            = {
137                 .platform_data  = &glantank_flash_data,
138         },
139         .num_resources  = 1,
140         .resource       = &glantank_flash_resource,
141 };
142
143 static struct plat_serial8250_port glantank_serial_port[] = {
144         {
145                 .mapbase        = GLANTANK_UART,
146                 .membase        = (char *)GLANTANK_UART,
147                 .irq            = IRQ_IOP32X_XINT3,
148                 .flags          = UPF_SKIP_TEST,
149                 .iotype         = UPIO_MEM,
150                 .regshift       = 0,
151                 .uartclk        = 1843200,
152         },
153         { },
154 };
155
156 static struct resource glantank_uart_resource = {
157         .start          = GLANTANK_UART,
158         .end            = GLANTANK_UART + 7,
159         .flags          = IORESOURCE_MEM,
160 };
161
162 static struct platform_device glantank_serial_device = {
163         .name           = "serial8250",
164         .id             = PLAT8250_DEV_PLATFORM,
165         .dev            = {
166                 .platform_data          = glantank_serial_port,
167         },
168         .num_resources  = 1,
169         .resource       = &glantank_uart_resource,
170 };
171
172 static struct f75375s_platform_data glantank_f75375s = {
173         .pwm            = { 255, 255 },
174         .pwm_enable     = { 0, 0 },
175 };
176
177 static struct i2c_board_info __initdata glantank_i2c_devices[] = {
178         {
179                 I2C_BOARD_INFO("rs5c372a", 0x32),
180         },
181         {
182                 I2C_BOARD_INFO("f75375", 0x2e),
183                 .platform_data = &glantank_f75375s,
184         },
185 };
186
187 static void glantank_power_off(void)
188 {
189         __raw_writeb(0x01, 0xfe8d0004);
190
191         while (1)
192                 ;
193 }
194
195 static void __init glantank_init_machine(void)
196 {
197         platform_device_register(&iop3xx_i2c0_device);
198         platform_device_register(&iop3xx_i2c1_device);
199         platform_device_register(&glantank_flash_device);
200         platform_device_register(&glantank_serial_device);
201         platform_device_register(&iop3xx_dma_0_channel);
202         platform_device_register(&iop3xx_dma_1_channel);
203
204         i2c_register_board_info(0, glantank_i2c_devices,
205                 ARRAY_SIZE(glantank_i2c_devices));
206
207         pm_power_off = glantank_power_off;
208 }
209
210 MACHINE_START(GLANTANK, "GLAN Tank")
211         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
212         .phys_io        = GLANTANK_UART,
213         .io_pg_offst    = ((GLANTANK_UART) >> 18) & 0xfffc,
214         .boot_params    = 0xa0000100,
215         .map_io         = glantank_map_io,
216         .init_irq       = iop32x_init_irq,
217         .timer          = &glantank_timer,
218         .init_machine   = glantank_init_machine,
219 MACHINE_END