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authorLennert Buytenhek <buytenh@wantstofly.org>2006-09-20 21:42:12 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-09-25 05:34:01 -0400
commite60d07b6cd38a7afb85f2cf51aebcb3359b63819 (patch)
tree639b895384a70502f2aac9e8f7bc82ec1a4930f4 /arch/arm/mach-iop32x/n2100.c
parent17b602b1c1a38f3f0a4461bb1f571346e751b36b (diff)
[ARM] 3850/1: iop3xx: add thecus n2100 support
Add support for the Thecus n2100 (80219-based.) Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-iop32x/n2100.c')
-rw-r--r--arch/arm/mach-iop32x/n2100.c251
1 files changed, 251 insertions, 0 deletions
diff --git a/arch/arm/mach-iop32x/n2100.c b/arch/arm/mach-iop32x/n2100.c
new file mode 100644
index 000000000000..a2c94a47b2b2
--- /dev/null
+++ b/arch/arm/mach-iop32x/n2100.c
@@ -0,0 +1,251 @@
1/*
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>
40
41/*
42 * N2100 timer tick configuration.
43 */
44static void __init n2100_timer_init(void)
45{
46 /* 33.000 MHz crystal. */
47 iop3xx_init_time(198000000);
48}
49
50static struct sys_timer n2100_timer = {
51 .init = n2100_timer_init,
52 .offset = iop3xx_gettimeoffset,
53};
54
55
56/*
57 * N2100 I/O.
58 */
59static struct map_desc n2100_io_desc[] __initdata = {
60 { /* on-board devices */
61 .virtual = N2100_UART,
62 .pfn = __phys_to_pfn(N2100_UART),
63 .length = 0x00100000,
64 .type = MT_DEVICE
65 },
66};
67
68void __init n2100_map_io(void)
69{
70 iop3xx_map_io();
71 iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc));
72}
73
74
75/*
76 * N2100 PCI.
77 */
78static inline int __init
79n2100_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
80{
81 int irq;
82
83 if (PCI_SLOT(dev->devfn) == 1) {
84 /* RTL8110SB #1 */
85 irq = IRQ_IOP32X_XINT0;
86 } else if (PCI_SLOT(dev->devfn) == 2) {
87 /* RTL8110SB #2 */
88 irq = IRQ_IOP32X_XINT1;
89 } else if (PCI_SLOT(dev->devfn) == 3) {
90 /* Sil3512 */
91 irq = IRQ_IOP32X_XINT2;
92 } else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) {
93 /* VT6212 INTA */
94 irq = IRQ_IOP32X_XINT1;
95 } else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) {
96 /* VT6212 INTB */
97 irq = IRQ_IOP32X_XINT0;
98 } else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) {
99 /* VT6212 INTC */
100 irq = IRQ_IOP32X_XINT2;
101 } else if (PCI_SLOT(dev->devfn) == 5) {
102 /* Mini-PCI slot */
103 irq = IRQ_IOP32X_XINT3;
104 } else {
105 printk(KERN_ERR "n2100_pci_map_irq() called for unknown "
106 "device PCI:%d:%d:%d\n", dev->bus->number,
107 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
108 irq = -1;
109 }
110
111 return irq;
112}
113
114static struct hw_pci n2100_pci __initdata = {
115 .swizzle = pci_std_swizzle,
116 .nr_controllers = 1,
117 .setup = iop3xx_pci_setup,
118 .preinit = iop3xx_pci_preinit,
119 .scan = iop3xx_pci_scan_bus,
120 .map_irq = n2100_pci_map_irq,
121};
122
123static int __init n2100_pci_init(void)
124{
125 if (machine_is_n2100())
126 pci_common_init(&n2100_pci);
127
128 return 0;
129}
130
131subsys_initcall(n2100_pci_init);
132
133
134/*
135 * N2100 machine initialisation.
136 */
137static struct physmap_flash_data n2100_flash_data = {
138 .width = 2,
139};
140
141static struct resource n2100_flash_resource = {
142 .start = 0xf0000000,
143 .end = 0xf0ffffff,
144 .flags = IORESOURCE_MEM,
145};
146
147static struct platform_device n2100_flash_device = {
148 .name = "physmap-flash",
149 .id = 0,
150 .dev = {
151 .platform_data = &n2100_flash_data,
152 },
153 .num_resources = 1,
154 .resource = &n2100_flash_resource,
155};
156
157
158static struct plat_serial8250_port n2100_serial_port[] = {
159 {
160 .mapbase = N2100_UART,
161 .membase = (char *)N2100_UART,
162 .irq = 0,
163 .flags = UPF_SKIP_TEST,
164 .iotype = UPIO_MEM,
165 .regshift = 0,
166 .uartclk = 1843200,
167 },
168 { },
169};
170
171static struct resource n2100_uart_resource = {
172 .start = N2100_UART,
173 .end = N2100_UART + 7,
174 .flags = IORESOURCE_MEM,
175};
176
177static struct platform_device n2100_serial_device = {
178 .name = "serial8250",
179 .id = PLAT8250_DEV_PLATFORM,
180 .dev = {
181 .platform_data = n2100_serial_port,
182 },
183 .num_resources = 1,
184 .resource = &n2100_uart_resource,
185};
186
187
188/*
189 * Pull PCA9532 GPIO #8 low to power off the machine.
190 */
191static void n2100_power_off(void)
192{
193 local_irq_disable();
194
195 /* Start condition, I2C address of PCA9532, write transaction. */
196 *IOP3XX_IDBR0 = 0xc0;
197 *IOP3XX_ICR0 = 0xe9;
198 mdelay(1);
199
200 /* Write address 0x08. */
201 *IOP3XX_IDBR0 = 0x08;
202 *IOP3XX_ICR0 = 0xe8;
203 mdelay(1);
204
205 /* Write data 0x01, stop condition. */
206 *IOP3XX_IDBR0 = 0x01;
207 *IOP3XX_ICR0 = 0xea;
208
209 while (1)
210 ;
211}
212
213
214static struct timer_list power_button_poll_timer;
215
216static void power_button_poll(unsigned long dummy)
217{
218 if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
219 ctrl_alt_del();
220 return;
221 }
222
223 power_button_poll_timer.expires = jiffies + (HZ / 10);
224 add_timer(&power_button_poll_timer);
225}
226
227
228static void __init n2100_init_machine(void)
229{
230 platform_device_register(&iop3xx_i2c0_device);
231 platform_device_register(&n2100_flash_device);
232 platform_device_register(&n2100_serial_device);
233
234 pm_power_off = n2100_power_off;
235
236 init_timer(&power_button_poll_timer);
237 power_button_poll_timer.function = power_button_poll;
238 power_button_poll_timer.expires = jiffies + (HZ / 10);
239 add_timer(&power_button_poll_timer);
240}
241
242MACHINE_START(N2100, "Thecus N2100")
243 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
244 .phys_io = N2100_UART,
245 .io_pg_offst = ((N2100_UART) >> 18) & 0xfffc,
246 .boot_params = 0xa0000100,
247 .map_io = n2100_map_io,
248 .init_irq = iop32x_init_irq,
249 .timer = &n2100_timer,
250 .init_machine = n2100_init_machine,
251MACHINE_END