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

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