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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 |
336 |
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