Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
[linux-2.6.git] / arch / arm / mach-iop32x / n2100.c
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/f75375s.h>
20 #include <linux/leds-pca9532.h>
21 #include <linux/delay.h>
22 #include <linux/kernel.h>
23 #include <linux/pci.h>
24 #include <linux/pm.h>
25 #include <linux/string.h>
26 #include <linux/serial_core.h>
27 #include <linux/serial_8250.h>
28 #include <linux/mtd/physmap.h>
29 #include <linux/i2c.h>
30 #include <linux/platform_device.h>
31 #include <linux/reboot.h>
32 #include <linux/io.h>
33 #include <mach/hardware.h>
34 #include <asm/irq.h>
35 #include <asm/mach/arch.h>
36 #include <asm/mach/map.h>
37 #include <asm/mach/pci.h>
38 #include <asm/mach/time.h>
39 #include <asm/mach-types.h>
40 #include <asm/page.h>
41 #include <asm/pgtable.h>
42 #include <mach/time.h>
43
44 /*
45  * N2100 timer tick configuration.
46  */
47 static void __init n2100_timer_init(void)
48 {
49         /* 33.000 MHz crystal.  */
50         iop_init_time(198000000);
51 }
52
53 static struct sys_timer n2100_timer = {
54         .init           = n2100_timer_init,
55 };
56
57
58 /*
59  * N2100 I/O.
60  */
61 static struct map_desc n2100_io_desc[] __initdata = {
62         {       /* on-board devices */
63                 .virtual        = N2100_UART,
64                 .pfn            = __phys_to_pfn(N2100_UART),
65                 .length         = 0x00100000,
66                 .type           = MT_DEVICE
67         },
68 };
69
70 void __init n2100_map_io(void)
71 {
72         iop3xx_map_io();
73         iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc));
74 }
75
76
77 /*
78  * N2100 PCI.
79  */
80 static int __init
81 n2100_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
82 {
83         int irq;
84
85         if (PCI_SLOT(dev->devfn) == 1) {
86                 /* RTL8110SB #1 */
87                 irq = IRQ_IOP32X_XINT0;
88         } else if (PCI_SLOT(dev->devfn) == 2) {
89                 /* RTL8110SB #2 */
90                 irq = IRQ_IOP32X_XINT3;
91         } else if (PCI_SLOT(dev->devfn) == 3) {
92                 /* Sil3512 */
93                 irq = IRQ_IOP32X_XINT2;
94         } else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) {
95                 /* VT6212 INTA */
96                 irq = IRQ_IOP32X_XINT1;
97         } else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) {
98                 /* VT6212 INTB */
99                 irq = IRQ_IOP32X_XINT0;
100         } else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) {
101                 /* VT6212 INTC */
102                 irq = IRQ_IOP32X_XINT2;
103         } else if (PCI_SLOT(dev->devfn) == 5) {
104                 /* Mini-PCI slot */
105                 irq = IRQ_IOP32X_XINT3;
106         } else {
107                 printk(KERN_ERR "n2100_pci_map_irq() called for unknown "
108                         "device PCI:%d:%d:%d\n", dev->bus->number,
109                         PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
110                 irq = -1;
111         }
112
113         return irq;
114 }
115
116 static struct hw_pci n2100_pci __initdata = {
117         .swizzle        = pci_std_swizzle,
118         .nr_controllers = 1,
119         .setup          = iop3xx_pci_setup,
120         .preinit        = iop3xx_pci_preinit,
121         .scan           = iop3xx_pci_scan_bus,
122         .map_irq        = n2100_pci_map_irq,
123 };
124
125 /*
126  * Both r8169 chips on the n2100 exhibit PCI parity problems.  Set
127  * the ->broken_parity_status flag for both ports so that the r8169
128  * driver knows it should ignore error interrupts.
129  */
130 static void n2100_fixup_r8169(struct pci_dev *dev)
131 {
132         if (dev->bus->number == 0 &&
133             (dev->devfn == PCI_DEVFN(1, 0) ||
134              dev->devfn == PCI_DEVFN(2, 0)))
135                 dev->broken_parity_status = 1;
136 }
137 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169);
138
139 static int __init n2100_pci_init(void)
140 {
141         if (machine_is_n2100())
142                 pci_common_init(&n2100_pci);
143
144         return 0;
145 }
146
147 subsys_initcall(n2100_pci_init);
148
149
150 /*
151  * N2100 machine initialisation.
152  */
153 static struct physmap_flash_data n2100_flash_data = {
154         .width          = 2,
155 };
156
157 static struct resource n2100_flash_resource = {
158         .start          = 0xf0000000,
159         .end            = 0xf0ffffff,
160         .flags          = IORESOURCE_MEM,
161 };
162
163 static struct platform_device n2100_flash_device = {
164         .name           = "physmap-flash",
165         .id             = 0,
166         .dev            = {
167                 .platform_data  = &n2100_flash_data,
168         },
169         .num_resources  = 1,
170         .resource       = &n2100_flash_resource,
171 };
172
173
174 static struct plat_serial8250_port n2100_serial_port[] = {
175         {
176                 .mapbase        = N2100_UART,
177                 .membase        = (char *)N2100_UART,
178                 .irq            = 0,
179                 .flags          = UPF_SKIP_TEST | UPF_AUTO_IRQ | UPF_SHARE_IRQ,
180                 .iotype         = UPIO_MEM,
181                 .regshift       = 0,
182                 .uartclk        = 1843200,
183         },
184         { },
185 };
186
187 static struct resource n2100_uart_resource = {
188         .start          = N2100_UART,
189         .end            = N2100_UART + 7,
190         .flags          = IORESOURCE_MEM,
191 };
192
193 static struct platform_device n2100_serial_device = {
194         .name           = "serial8250",
195         .id             = PLAT8250_DEV_PLATFORM,
196         .dev            = {
197                 .platform_data          = n2100_serial_port,
198         },
199         .num_resources  = 1,
200         .resource       = &n2100_uart_resource,
201 };
202
203 static struct f75375s_platform_data n2100_f75375s = {
204         .pwm            = { 255, 255 },
205         .pwm_enable = { 0, 0 },
206 };
207
208 static struct pca9532_platform_data n2100_leds = {
209         .leds = {
210         {       .name = "n2100:red:satafail0",
211                 .state = PCA9532_OFF,
212                 .type = PCA9532_TYPE_LED,
213         },
214         {       .name = "n2100:red:satafail1",
215                 .state = PCA9532_OFF,
216                 .type = PCA9532_TYPE_LED,
217         },
218         {       .name = "n2100:blue:usb",
219                 .state = PCA9532_OFF,
220                 .type = PCA9532_TYPE_LED,
221         },
222         {       .type = PCA9532_TYPE_NONE },
223
224         {       .type = PCA9532_TYPE_NONE },
225         {       .type = PCA9532_TYPE_NONE },
226         {       .type = PCA9532_TYPE_NONE },
227         {       .name = "n2100:red:usb",
228                 .state = PCA9532_OFF,
229                 .type = PCA9532_TYPE_LED,
230         },
231
232         {       .type = PCA9532_TYPE_NONE }, /* power OFF gpio */
233         {       .type = PCA9532_TYPE_NONE }, /* reset gpio */
234         {       .type = PCA9532_TYPE_NONE },
235         {       .type = PCA9532_TYPE_NONE },
236
237         {       .type = PCA9532_TYPE_NONE },
238         {       .name = "n2100:orange:system",
239                 .state = PCA9532_OFF,
240                 .type = PCA9532_TYPE_LED,
241         },
242         {       .name = "n2100:red:system",
243                 .state = PCA9532_OFF,
244                 .type = PCA9532_TYPE_LED,
245         },
246         {       .name = "N2100 beeper"  ,
247                 .state =  PCA9532_OFF,
248                 .type = PCA9532_TYPE_N2100_BEEP,
249         },
250         },
251         .psc = { 0, 0 },
252         .pwm = { 0, 0 },
253 };
254
255 static struct i2c_board_info __initdata n2100_i2c_devices[] = {
256         {
257                 I2C_BOARD_INFO("rs5c372b", 0x32),
258         },
259         {
260                 I2C_BOARD_INFO("f75375", 0x2e),
261                 .platform_data = &n2100_f75375s,
262         },
263         {
264                 I2C_BOARD_INFO("pca9532", 0x60),
265                 .platform_data = &n2100_leds,
266         },
267 };
268
269 /*
270  * Pull PCA9532 GPIO #8 low to power off the machine.
271  */
272 static void n2100_power_off(void)
273 {
274         local_irq_disable();
275
276         /* Start condition, I2C address of PCA9532, write transaction.  */
277         *IOP3XX_IDBR0 = 0xc0;
278         *IOP3XX_ICR0 = 0xe9;
279         mdelay(1);
280
281         /* Write address 0x08.  */
282         *IOP3XX_IDBR0 = 0x08;
283         *IOP3XX_ICR0 = 0xe8;
284         mdelay(1);
285
286         /* Write data 0x01, stop condition.  */
287         *IOP3XX_IDBR0 = 0x01;
288         *IOP3XX_ICR0 = 0xea;
289
290         while (1)
291                 ;
292 }
293
294
295 static struct timer_list power_button_poll_timer;
296
297 static void power_button_poll(unsigned long dummy)
298 {
299         if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
300                 ctrl_alt_del();
301                 return;
302         }
303
304         power_button_poll_timer.expires = jiffies + (HZ / 10);
305         add_timer(&power_button_poll_timer);
306 }
307
308
309 static void __init n2100_init_machine(void)
310 {
311         platform_device_register(&iop3xx_i2c0_device);
312         platform_device_register(&n2100_flash_device);
313         platform_device_register(&n2100_serial_device);
314         platform_device_register(&iop3xx_dma_0_channel);
315         platform_device_register(&iop3xx_dma_1_channel);
316
317         i2c_register_board_info(0, n2100_i2c_devices,
318                 ARRAY_SIZE(n2100_i2c_devices));
319
320         pm_power_off = n2100_power_off;
321
322         init_timer(&power_button_poll_timer);
323         power_button_poll_timer.function = power_button_poll;
324         power_button_poll_timer.expires = jiffies + (HZ / 10);
325         add_timer(&power_button_poll_timer);
326 }
327
328 MACHINE_START(N2100, "Thecus N2100")
329         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
330         .boot_params    = 0xa0000100,
331         .map_io         = n2100_map_io,
332         .init_irq       = iop32x_init_irq,
333         .timer          = &n2100_timer,
334         .init_machine   = n2100_init_machine,
335 MACHINE_END