2 * arch/arm/mach-iop32x/n2100.c
4 * Board support code for the Thecus N2100 platform.
6 * Author: Rory Bolt <rorybolt@pacbell.net>
7 * Copyright (C) 2002 Rory Bolt
8 * Copyright 2003 (c) MontaVista, Software, Inc.
9 * Copyright (C) 2004 Intel Corp.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
18 #include <linux/init.h>
19 #include <linux/delay.h>
20 #include <linux/kernel.h>
21 #include <linux/pci.h>
23 #include <linux/string.h>
24 #include <linux/slab.h>
25 #include <linux/serial_core.h>
26 #include <linux/serial_8250.h>
27 #include <linux/mtd/physmap.h>
28 #include <linux/platform_device.h>
29 #include <linux/reboot.h>
30 #include <asm/hardware.h>
33 #include <asm/mach/arch.h>
34 #include <asm/mach/map.h>
35 #include <asm/mach/pci.h>
36 #include <asm/mach/time.h>
37 #include <asm/mach-types.h>
39 #include <asm/pgtable.h>
40 #include <asm/arch/time.h>
43 * N2100 timer tick configuration.
45 static void __init n2100_timer_init(void)
47 /* 33.000 MHz crystal. */
48 iop_init_time(198000000);
51 static struct sys_timer n2100_timer = {
52 .init = n2100_timer_init,
53 .offset = iop_gettimeoffset,
60 static struct map_desc n2100_io_desc[] __initdata = {
61 { /* on-board devices */
62 .virtual = N2100_UART,
63 .pfn = __phys_to_pfn(N2100_UART),
69 void __init n2100_map_io(void)
72 iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc));
79 static inline int __init
80 n2100_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
84 if (PCI_SLOT(dev->devfn) == 1) {
86 irq = IRQ_IOP32X_XINT0;
87 } else if (PCI_SLOT(dev->devfn) == 2) {
89 irq = IRQ_IOP32X_XINT3;
90 } else if (PCI_SLOT(dev->devfn) == 3) {
92 irq = IRQ_IOP32X_XINT2;
93 } else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) {
95 irq = IRQ_IOP32X_XINT1;
96 } else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) {
98 irq = IRQ_IOP32X_XINT0;
99 } else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) {
101 irq = IRQ_IOP32X_XINT2;
102 } else if (PCI_SLOT(dev->devfn) == 5) {
104 irq = IRQ_IOP32X_XINT3;
106 printk(KERN_ERR "n2100_pci_map_irq() called for unknown "
107 "device PCI:%d:%d:%d\n", dev->bus->number,
108 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
115 static struct hw_pci n2100_pci __initdata = {
116 .swizzle = pci_std_swizzle,
118 .setup = iop3xx_pci_setup,
119 .preinit = iop3xx_pci_preinit,
120 .scan = iop3xx_pci_scan_bus,
121 .map_irq = n2100_pci_map_irq,
124 static int __init n2100_pci_init(void)
126 if (machine_is_n2100())
127 pci_common_init(&n2100_pci);
132 subsys_initcall(n2100_pci_init);
136 * N2100 machine initialisation.
138 static struct physmap_flash_data n2100_flash_data = {
142 static struct resource n2100_flash_resource = {
145 .flags = IORESOURCE_MEM,
148 static struct platform_device n2100_flash_device = {
149 .name = "physmap-flash",
152 .platform_data = &n2100_flash_data,
155 .resource = &n2100_flash_resource,
159 static struct plat_serial8250_port n2100_serial_port[] = {
161 .mapbase = N2100_UART,
162 .membase = (char *)N2100_UART,
164 .flags = UPF_SKIP_TEST,
172 static struct resource n2100_uart_resource = {
174 .end = N2100_UART + 7,
175 .flags = IORESOURCE_MEM,
178 static struct platform_device n2100_serial_device = {
179 .name = "serial8250",
180 .id = PLAT8250_DEV_PLATFORM,
182 .platform_data = n2100_serial_port,
185 .resource = &n2100_uart_resource,
190 * Pull PCA9532 GPIO #8 low to power off the machine.
192 static void n2100_power_off(void)
196 /* Start condition, I2C address of PCA9532, write transaction. */
197 *IOP3XX_IDBR0 = 0xc0;
201 /* Write address 0x08. */
202 *IOP3XX_IDBR0 = 0x08;
206 /* Write data 0x01, stop condition. */
207 *IOP3XX_IDBR0 = 0x01;
215 static struct timer_list power_button_poll_timer;
217 static void power_button_poll(unsigned long dummy)
219 if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
224 power_button_poll_timer.expires = jiffies + (HZ / 10);
225 add_timer(&power_button_poll_timer);
229 static void __init n2100_init_machine(void)
231 platform_device_register(&iop3xx_i2c0_device);
232 platform_device_register(&n2100_flash_device);
233 platform_device_register(&n2100_serial_device);
235 pm_power_off = n2100_power_off;
237 init_timer(&power_button_poll_timer);
238 power_button_poll_timer.function = power_button_poll;
239 power_button_poll_timer.expires = jiffies + (HZ / 10);
240 add_timer(&power_button_poll_timer);
243 MACHINE_START(N2100, "Thecus N2100")
244 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
245 .phys_io = N2100_UART,
246 .io_pg_offst = ((N2100_UART) >> 18) & 0xfffc,
247 .boot_params = 0xa0000100,
248 .map_io = n2100_map_io,
249 .init_irq = iop32x_init_irq,
250 .timer = &n2100_timer,
251 .init_machine = n2100_init_machine,