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 */
n2100_timer_init(void)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
n2100_map_io(void)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
n2100_pci_map_irq(const struct pci_dev * dev,u8 slot,u8 pin)81 n2100_pci_map_irq(const 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 */
n2100_fixup_r8169(struct pci_dev * dev)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
n2100_pci_init(void)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 */
n2100_power_off(void)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
n2100_restart(char mode,const char * cmd)294 static void n2100_restart(char mode, const char *cmd)
295 {
296 gpio_line_set(N2100_HARDWARE_RESET, GPIO_LOW);
297 gpio_line_config(N2100_HARDWARE_RESET, GPIO_OUT);
298 while (1)
299 ;
300 }
301
302
303 static struct timer_list power_button_poll_timer;
304
power_button_poll(unsigned long dummy)305 static void power_button_poll(unsigned long dummy)
306 {
307 if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
308 ctrl_alt_del();
309 return;
310 }
311
312 power_button_poll_timer.expires = jiffies + (HZ / 10);
313 add_timer(&power_button_poll_timer);
314 }
315
316
n2100_init_machine(void)317 static void __init n2100_init_machine(void)
318 {
319 platform_device_register(&iop3xx_i2c0_device);
320 platform_device_register(&n2100_flash_device);
321 platform_device_register(&n2100_serial_device);
322 platform_device_register(&iop3xx_dma_0_channel);
323 platform_device_register(&iop3xx_dma_1_channel);
324
325 i2c_register_board_info(0, n2100_i2c_devices,
326 ARRAY_SIZE(n2100_i2c_devices));
327
328 pm_power_off = n2100_power_off;
329
330 init_timer(&power_button_poll_timer);
331 power_button_poll_timer.function = power_button_poll;
332 power_button_poll_timer.expires = jiffies + (HZ / 10);
333 add_timer(&power_button_poll_timer);
334 }
335
336 MACHINE_START(N2100, "Thecus N2100")
337 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
338 .atag_offset = 0x100,
339 .map_io = n2100_map_io,
340 .init_irq = iop32x_init_irq,
341 .timer = &n2100_timer,
342 .init_machine = n2100_init_machine,
343 .restart = n2100_restart,
344 MACHINE_END
345