blob: d55005d647816b395ee7af7e228297dd7f7462e1 [file] [log] [blame]
Lennert Buytenheke60d07b2006-09-21 02:42:12 +01001/*
2 * arch/arm/mach-iop32x/n2100.c
3 *
4 * Board support code for the Thecus N2100 platform.
5 *
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.
10 *
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.
15 */
16
17#include <linux/mm.h>
18#include <linux/init.h>
19#include <linux/delay.h>
20#include <linux/kernel.h>
21#include <linux/pci.h>
22#include <linux/pm.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>
31#include <asm/io.h>
32#include <asm/irq.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>
38#include <asm/page.h>
39#include <asm/pgtable.h>
Dan Williams3668b452007-02-13 17:13:34 +010040#include <asm/arch/time.h>
Lennert Buytenheke60d07b2006-09-21 02:42:12 +010041
42/*
43 * N2100 timer tick configuration.
44 */
45static void __init n2100_timer_init(void)
46{
47 /* 33.000 MHz crystal. */
Dan Williams3668b452007-02-13 17:13:34 +010048 iop_init_time(198000000);
Lennert Buytenheke60d07b2006-09-21 02:42:12 +010049}
50
51static struct sys_timer n2100_timer = {
52 .init = n2100_timer_init,
Dan Williams3668b452007-02-13 17:13:34 +010053 .offset = iop_gettimeoffset,
Lennert Buytenheke60d07b2006-09-21 02:42:12 +010054};
55
56
57/*
58 * N2100 I/O.
59 */
60static struct map_desc n2100_io_desc[] __initdata = {
61 { /* on-board devices */
62 .virtual = N2100_UART,
63 .pfn = __phys_to_pfn(N2100_UART),
64 .length = 0x00100000,
65 .type = MT_DEVICE
66 },
67};
68
69void __init n2100_map_io(void)
70{
71 iop3xx_map_io();
72 iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc));
73}
74
75
76/*
77 * N2100 PCI.
78 */
Dan Williamsd73d8012007-05-15 01:03:36 +010079static int __init
Lennert Buytenheke60d07b2006-09-21 02:42:12 +010080n2100_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
81{
82 int irq;
83
84 if (PCI_SLOT(dev->devfn) == 1) {
85 /* RTL8110SB #1 */
86 irq = IRQ_IOP32X_XINT0;
87 } else if (PCI_SLOT(dev->devfn) == 2) {
88 /* RTL8110SB #2 */
Lennert Buytenhek811c9a42006-10-29 14:15:10 +010089 irq = IRQ_IOP32X_XINT3;
Lennert Buytenheke60d07b2006-09-21 02:42:12 +010090 } else if (PCI_SLOT(dev->devfn) == 3) {
91 /* Sil3512 */
92 irq = IRQ_IOP32X_XINT2;
93 } else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) {
94 /* VT6212 INTA */
95 irq = IRQ_IOP32X_XINT1;
96 } else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) {
97 /* VT6212 INTB */
98 irq = IRQ_IOP32X_XINT0;
99 } else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) {
100 /* VT6212 INTC */
101 irq = IRQ_IOP32X_XINT2;
102 } else if (PCI_SLOT(dev->devfn) == 5) {
103 /* Mini-PCI slot */
104 irq = IRQ_IOP32X_XINT3;
105 } else {
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));
109 irq = -1;
110 }
111
112 return irq;
113}
114
115static struct hw_pci n2100_pci __initdata = {
116 .swizzle = pci_std_swizzle,
117 .nr_controllers = 1,
118 .setup = iop3xx_pci_setup,
119 .preinit = iop3xx_pci_preinit,
120 .scan = iop3xx_pci_scan_bus,
121 .map_irq = n2100_pci_map_irq,
122};
123
Lennert Buytenhek66822b22007-02-08 01:03:17 +0100124/*
125 * Both r8169 chips on the n2100 exhibit PCI parity problems. Set
126 * the ->broken_parity_status flag for both ports so that the r8169
127 * driver knows it should ignore error interrupts.
128 */
129static void n2100_fixup_r8169(struct pci_dev *dev)
130{
131 if (dev->bus->number == 0 &&
132 (dev->devfn == PCI_DEVFN(1, 0) ||
133 dev->devfn == PCI_DEVFN(2, 0)))
134 dev->broken_parity_status = 1;
135}
136DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169);
137
Lennert Buytenheke60d07b2006-09-21 02:42:12 +0100138static int __init n2100_pci_init(void)
139{
140 if (machine_is_n2100())
141 pci_common_init(&n2100_pci);
142
143 return 0;
144}
145
146subsys_initcall(n2100_pci_init);
147
148
149/*
150 * N2100 machine initialisation.
151 */
152static struct physmap_flash_data n2100_flash_data = {
153 .width = 2,
154};
155
156static struct resource n2100_flash_resource = {
157 .start = 0xf0000000,
158 .end = 0xf0ffffff,
159 .flags = IORESOURCE_MEM,
160};
161
162static struct platform_device n2100_flash_device = {
163 .name = "physmap-flash",
164 .id = 0,
165 .dev = {
166 .platform_data = &n2100_flash_data,
167 },
168 .num_resources = 1,
169 .resource = &n2100_flash_resource,
170};
171
172
173static struct plat_serial8250_port n2100_serial_port[] = {
174 {
175 .mapbase = N2100_UART,
176 .membase = (char *)N2100_UART,
177 .irq = 0,
178 .flags = UPF_SKIP_TEST,
179 .iotype = UPIO_MEM,
180 .regshift = 0,
181 .uartclk = 1843200,
182 },
183 { },
184};
185
186static struct resource n2100_uart_resource = {
187 .start = N2100_UART,
188 .end = N2100_UART + 7,
189 .flags = IORESOURCE_MEM,
190};
191
192static struct platform_device n2100_serial_device = {
193 .name = "serial8250",
194 .id = PLAT8250_DEV_PLATFORM,
195 .dev = {
196 .platform_data = n2100_serial_port,
197 },
198 .num_resources = 1,
199 .resource = &n2100_uart_resource,
200};
201
202
203/*
204 * Pull PCA9532 GPIO #8 low to power off the machine.
205 */
206static void n2100_power_off(void)
207{
208 local_irq_disable();
209
210 /* Start condition, I2C address of PCA9532, write transaction. */
211 *IOP3XX_IDBR0 = 0xc0;
212 *IOP3XX_ICR0 = 0xe9;
213 mdelay(1);
214
215 /* Write address 0x08. */
216 *IOP3XX_IDBR0 = 0x08;
217 *IOP3XX_ICR0 = 0xe8;
218 mdelay(1);
219
220 /* Write data 0x01, stop condition. */
221 *IOP3XX_IDBR0 = 0x01;
222 *IOP3XX_ICR0 = 0xea;
223
224 while (1)
225 ;
226}
227
228
229static struct timer_list power_button_poll_timer;
230
231static void power_button_poll(unsigned long dummy)
232{
233 if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
234 ctrl_alt_del();
235 return;
236 }
237
238 power_button_poll_timer.expires = jiffies + (HZ / 10);
239 add_timer(&power_button_poll_timer);
240}
241
242
243static void __init n2100_init_machine(void)
244{
245 platform_device_register(&iop3xx_i2c0_device);
246 platform_device_register(&n2100_flash_device);
247 platform_device_register(&n2100_serial_device);
248
249 pm_power_off = n2100_power_off;
250
251 init_timer(&power_button_poll_timer);
252 power_button_poll_timer.function = power_button_poll;
253 power_button_poll_timer.expires = jiffies + (HZ / 10);
254 add_timer(&power_button_poll_timer);
255}
256
257MACHINE_START(N2100, "Thecus N2100")
258 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
259 .phys_io = N2100_UART,
260 .io_pg_offst = ((N2100_UART) >> 18) & 0xfffc,
261 .boot_params = 0xa0000100,
262 .map_io = n2100_map_io,
263 .init_irq = iop32x_init_irq,
264 .timer = &n2100_timer,
265 .init_machine = n2100_init_machine,
266MACHINE_END