Root/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 */
47static void __init n2100_timer_init(void)
48{
49    /* 33.000 MHz crystal. */
50    iop_init_time(198000000);
51}
52
53static struct sys_timer n2100_timer = {
54    .init = n2100_timer_init,
55};
56
57
58/*
59 * N2100 I/O.
60 */
61static 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
70void __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 */
80static int __init
81n2100_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
116static 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 */
130static 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}
137DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169);
138
139static int __init n2100_pci_init(void)
140{
141    if (machine_is_n2100())
142        pci_common_init(&n2100_pci);
143
144    return 0;
145}
146
147subsys_initcall(n2100_pci_init);
148
149
150/*
151 * N2100 machine initialisation.
152 */
153static struct physmap_flash_data n2100_flash_data = {
154    .width = 2,
155};
156
157static struct resource n2100_flash_resource = {
158    .start = 0xf0000000,
159    .end = 0xf0ffffff,
160    .flags = IORESOURCE_MEM,
161};
162
163static 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
174static 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
187static struct resource n2100_uart_resource = {
188    .start = N2100_UART,
189    .end = N2100_UART + 7,
190    .flags = IORESOURCE_MEM,
191};
192
193static 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
203static struct f75375s_platform_data n2100_f75375s = {
204    .pwm = { 255, 255 },
205    .pwm_enable = { 0, 0 },
206};
207
208static 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
255static 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 */
272static 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
295static struct timer_list power_button_poll_timer;
296
297static 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
309static 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
328MACHINE_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,
335MACHINE_END
336

Archive Download this file



interactive