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e60d07b6 LB |
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> | |
9aa69338 | 19 | #include <linux/f75375s.h> |
30be0486 | 20 | #include <linux/leds-pca9532.h> |
e60d07b6 LB |
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> | |
e60d07b6 LB |
26 | #include <linux/serial_core.h> |
27 | #include <linux/serial_8250.h> | |
28 | #include <linux/mtd/physmap.h> | |
c00593f6 | 29 | #include <linux/i2c.h> |
e60d07b6 LB |
30 | #include <linux/platform_device.h> |
31 | #include <linux/reboot.h> | |
fced80c7 | 32 | #include <linux/io.h> |
7111f878 | 33 | #include <linux/gpio.h> |
a09e64fb | 34 | #include <mach/hardware.h> |
e60d07b6 LB |
35 | #include <asm/irq.h> |
36 | #include <asm/mach/arch.h> | |
37 | #include <asm/mach/map.h> | |
38 | #include <asm/mach/pci.h> | |
39 | #include <asm/mach/time.h> | |
40 | #include <asm/mach-types.h> | |
41 | #include <asm/page.h> | |
42 | #include <asm/pgtable.h> | |
a09e64fb | 43 | #include <mach/time.h> |
7b85b867 | 44 | #include "gpio-iop32x.h" |
e60d07b6 LB |
45 | |
46 | /* | |
47 | * N2100 timer tick configuration. | |
48 | */ | |
49 | static void __init n2100_timer_init(void) | |
50 | { | |
51 | /* 33.000 MHz crystal. */ | |
3668b45d | 52 | iop_init_time(198000000); |
e60d07b6 LB |
53 | } |
54 | ||
e60d07b6 LB |
55 | |
56 | /* | |
57 | * N2100 I/O. | |
58 | */ | |
59 | static 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 | ||
68 | void __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 | */ | |
db409092 | 78 | static int n2100_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
e60d07b6 LB |
79 | { |
80 | int irq; | |
81 | ||
82 | if (PCI_SLOT(dev->devfn) == 1) { | |
83 | /* RTL8110SB #1 */ | |
84 | irq = IRQ_IOP32X_XINT0; | |
85 | } else if (PCI_SLOT(dev->devfn) == 2) { | |
86 | /* RTL8110SB #2 */ | |
811c9a4b | 87 | irq = IRQ_IOP32X_XINT3; |
e60d07b6 LB |
88 | } else if (PCI_SLOT(dev->devfn) == 3) { |
89 | /* Sil3512 */ | |
90 | irq = IRQ_IOP32X_XINT2; | |
91 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) { | |
92 | /* VT6212 INTA */ | |
93 | irq = IRQ_IOP32X_XINT1; | |
94 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) { | |
95 | /* VT6212 INTB */ | |
96 | irq = IRQ_IOP32X_XINT0; | |
97 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) { | |
98 | /* VT6212 INTC */ | |
99 | irq = IRQ_IOP32X_XINT2; | |
100 | } else if (PCI_SLOT(dev->devfn) == 5) { | |
101 | /* Mini-PCI slot */ | |
102 | irq = IRQ_IOP32X_XINT3; | |
103 | } else { | |
104 | printk(KERN_ERR "n2100_pci_map_irq() called for unknown " | |
105 | "device PCI:%d:%d:%d\n", dev->bus->number, | |
106 | PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)); | |
107 | irq = -1; | |
108 | } | |
109 | ||
110 | return irq; | |
111 | } | |
112 | ||
113 | static struct hw_pci n2100_pci __initdata = { | |
e60d07b6 | 114 | .nr_controllers = 1, |
c23bfc38 | 115 | .ops = &iop3xx_ops, |
e60d07b6 LB |
116 | .setup = iop3xx_pci_setup, |
117 | .preinit = iop3xx_pci_preinit, | |
e60d07b6 LB |
118 | .map_irq = n2100_pci_map_irq, |
119 | }; | |
120 | ||
66822b2e LB |
121 | /* |
122 | * Both r8169 chips on the n2100 exhibit PCI parity problems. Set | |
123 | * the ->broken_parity_status flag for both ports so that the r8169 | |
124 | * driver knows it should ignore error interrupts. | |
125 | */ | |
126 | static void n2100_fixup_r8169(struct pci_dev *dev) | |
127 | { | |
128 | if (dev->bus->number == 0 && | |
129 | (dev->devfn == PCI_DEVFN(1, 0) || | |
130 | dev->devfn == PCI_DEVFN(2, 0))) | |
131 | dev->broken_parity_status = 1; | |
132 | } | |
133 | DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169); | |
134 | ||
e60d07b6 LB |
135 | static int __init n2100_pci_init(void) |
136 | { | |
137 | if (machine_is_n2100()) | |
138 | pci_common_init(&n2100_pci); | |
139 | ||
140 | return 0; | |
141 | } | |
142 | ||
143 | subsys_initcall(n2100_pci_init); | |
144 | ||
145 | ||
146 | /* | |
147 | * N2100 machine initialisation. | |
148 | */ | |
149 | static struct physmap_flash_data n2100_flash_data = { | |
150 | .width = 2, | |
151 | }; | |
152 | ||
153 | static struct resource n2100_flash_resource = { | |
154 | .start = 0xf0000000, | |
155 | .end = 0xf0ffffff, | |
156 | .flags = IORESOURCE_MEM, | |
157 | }; | |
158 | ||
159 | static struct platform_device n2100_flash_device = { | |
160 | .name = "physmap-flash", | |
161 | .id = 0, | |
162 | .dev = { | |
163 | .platform_data = &n2100_flash_data, | |
164 | }, | |
165 | .num_resources = 1, | |
166 | .resource = &n2100_flash_resource, | |
167 | }; | |
168 | ||
169 | ||
170 | static struct plat_serial8250_port n2100_serial_port[] = { | |
171 | { | |
172 | .mapbase = N2100_UART, | |
173 | .membase = (char *)N2100_UART, | |
174 | .irq = 0, | |
cc761bed | 175 | .flags = UPF_SKIP_TEST | UPF_AUTO_IRQ | UPF_SHARE_IRQ, |
e60d07b6 LB |
176 | .iotype = UPIO_MEM, |
177 | .regshift = 0, | |
178 | .uartclk = 1843200, | |
179 | }, | |
180 | { }, | |
181 | }; | |
182 | ||
183 | static struct resource n2100_uart_resource = { | |
184 | .start = N2100_UART, | |
185 | .end = N2100_UART + 7, | |
186 | .flags = IORESOURCE_MEM, | |
187 | }; | |
188 | ||
189 | static struct platform_device n2100_serial_device = { | |
190 | .name = "serial8250", | |
191 | .id = PLAT8250_DEV_PLATFORM, | |
192 | .dev = { | |
193 | .platform_data = n2100_serial_port, | |
194 | }, | |
195 | .num_resources = 1, | |
196 | .resource = &n2100_uart_resource, | |
197 | }; | |
198 | ||
9aa69338 RV |
199 | static struct f75375s_platform_data n2100_f75375s = { |
200 | .pwm = { 255, 255 }, | |
201 | .pwm_enable = { 0, 0 }, | |
202 | }; | |
203 | ||
30be0486 RV |
204 | static struct pca9532_platform_data n2100_leds = { |
205 | .leds = { | |
206 | { .name = "n2100:red:satafail0", | |
207 | .state = PCA9532_OFF, | |
208 | .type = PCA9532_TYPE_LED, | |
209 | }, | |
210 | { .name = "n2100:red:satafail1", | |
211 | .state = PCA9532_OFF, | |
212 | .type = PCA9532_TYPE_LED, | |
213 | }, | |
214 | { .name = "n2100:blue:usb", | |
215 | .state = PCA9532_OFF, | |
216 | .type = PCA9532_TYPE_LED, | |
217 | }, | |
218 | { .type = PCA9532_TYPE_NONE }, | |
219 | ||
220 | { .type = PCA9532_TYPE_NONE }, | |
221 | { .type = PCA9532_TYPE_NONE }, | |
222 | { .type = PCA9532_TYPE_NONE }, | |
223 | { .name = "n2100:red:usb", | |
224 | .state = PCA9532_OFF, | |
225 | .type = PCA9532_TYPE_LED, | |
226 | }, | |
227 | ||
228 | { .type = PCA9532_TYPE_NONE }, /* power OFF gpio */ | |
229 | { .type = PCA9532_TYPE_NONE }, /* reset gpio */ | |
230 | { .type = PCA9532_TYPE_NONE }, | |
231 | { .type = PCA9532_TYPE_NONE }, | |
232 | ||
233 | { .type = PCA9532_TYPE_NONE }, | |
234 | { .name = "n2100:orange:system", | |
235 | .state = PCA9532_OFF, | |
236 | .type = PCA9532_TYPE_LED, | |
237 | }, | |
238 | { .name = "n2100:red:system", | |
239 | .state = PCA9532_OFF, | |
240 | .type = PCA9532_TYPE_LED, | |
241 | }, | |
242 | { .name = "N2100 beeper" , | |
243 | .state = PCA9532_OFF, | |
244 | .type = PCA9532_TYPE_N2100_BEEP, | |
245 | }, | |
246 | }, | |
247 | .psc = { 0, 0 }, | |
248 | .pwm = { 0, 0 }, | |
249 | }; | |
250 | ||
c00593f6 MM |
251 | static struct i2c_board_info __initdata n2100_i2c_devices[] = { |
252 | { | |
3760f736 | 253 | I2C_BOARD_INFO("rs5c372b", 0x32), |
c00593f6 | 254 | }, |
9aa69338 RV |
255 | { |
256 | I2C_BOARD_INFO("f75375", 0x2e), | |
9aa69338 RV |
257 | .platform_data = &n2100_f75375s, |
258 | }, | |
30be0486 RV |
259 | { |
260 | I2C_BOARD_INFO("pca9532", 0x60), | |
261 | .platform_data = &n2100_leds, | |
262 | }, | |
c00593f6 | 263 | }; |
e60d07b6 LB |
264 | |
265 | /* | |
266 | * Pull PCA9532 GPIO #8 low to power off the machine. | |
267 | */ | |
268 | static void n2100_power_off(void) | |
269 | { | |
270 | local_irq_disable(); | |
271 | ||
272 | /* Start condition, I2C address of PCA9532, write transaction. */ | |
273 | *IOP3XX_IDBR0 = 0xc0; | |
274 | *IOP3XX_ICR0 = 0xe9; | |
275 | mdelay(1); | |
276 | ||
277 | /* Write address 0x08. */ | |
278 | *IOP3XX_IDBR0 = 0x08; | |
279 | *IOP3XX_ICR0 = 0xe8; | |
280 | mdelay(1); | |
281 | ||
282 | /* Write data 0x01, stop condition. */ | |
283 | *IOP3XX_IDBR0 = 0x01; | |
284 | *IOP3XX_ICR0 = 0xea; | |
285 | ||
286 | while (1) | |
287 | ; | |
288 | } | |
289 | ||
7b6d864b | 290 | static void n2100_restart(enum reboot_mode mode, const char *cmd) |
bec92b1e | 291 | { |
7111f878 LW |
292 | int ret; |
293 | ||
294 | ret = gpio_direction_output(N2100_HARDWARE_RESET, 0); | |
295 | if (ret) { | |
296 | pr_crit("could not drive reset GPIO low\n"); | |
297 | return; | |
298 | } | |
299 | /* Wait for reset to happen */ | |
bec92b1e RK |
300 | while (1) |
301 | ; | |
302 | } | |
303 | ||
e60d07b6 LB |
304 | |
305 | static struct timer_list power_button_poll_timer; | |
306 | ||
e99e88a9 | 307 | static void power_button_poll(struct timer_list *unused) |
e60d07b6 | 308 | { |
afc3b79f | 309 | if (gpio_get_value(N2100_POWER_BUTTON) == 0) { |
e60d07b6 LB |
310 | ctrl_alt_del(); |
311 | return; | |
312 | } | |
313 | ||
314 | power_button_poll_timer.expires = jiffies + (HZ / 10); | |
315 | add_timer(&power_button_poll_timer); | |
316 | } | |
317 | ||
7111f878 LW |
318 | static int __init n2100_request_gpios(void) |
319 | { | |
320 | int ret; | |
321 | ||
322 | if (!machine_is_n2100()) | |
323 | return 0; | |
324 | ||
325 | ret = gpio_request(N2100_HARDWARE_RESET, "reset"); | |
326 | if (ret) | |
327 | pr_err("could not request reset GPIO\n"); | |
afc3b79f LW |
328 | |
329 | ret = gpio_request(N2100_POWER_BUTTON, "power"); | |
330 | if (ret) | |
331 | pr_err("could not request power GPIO\n"); | |
332 | else { | |
333 | ret = gpio_direction_input(N2100_POWER_BUTTON); | |
334 | if (ret) | |
335 | pr_err("could not set power GPIO as input\n"); | |
336 | } | |
337 | /* Set up power button poll timer */ | |
e99e88a9 | 338 | timer_setup(&power_button_poll_timer, power_button_poll, 0); |
afc3b79f LW |
339 | power_button_poll_timer.expires = jiffies + (HZ / 10); |
340 | add_timer(&power_button_poll_timer); | |
7111f878 LW |
341 | return 0; |
342 | } | |
343 | device_initcall(n2100_request_gpios); | |
e60d07b6 LB |
344 | |
345 | static void __init n2100_init_machine(void) | |
346 | { | |
7b85b867 | 347 | register_iop32x_gpio(); |
e60d07b6 LB |
348 | platform_device_register(&iop3xx_i2c0_device); |
349 | platform_device_register(&n2100_flash_device); | |
350 | platform_device_register(&n2100_serial_device); | |
2492c845 DW |
351 | platform_device_register(&iop3xx_dma_0_channel); |
352 | platform_device_register(&iop3xx_dma_1_channel); | |
e60d07b6 | 353 | |
c00593f6 MM |
354 | i2c_register_board_info(0, n2100_i2c_devices, |
355 | ARRAY_SIZE(n2100_i2c_devices)); | |
356 | ||
e60d07b6 | 357 | pm_power_off = n2100_power_off; |
e60d07b6 LB |
358 | } |
359 | ||
360 | MACHINE_START(N2100, "Thecus N2100") | |
361 | /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ | |
1896746d | 362 | .atag_offset = 0x100, |
e60d07b6 LB |
363 | .map_io = n2100_map_io, |
364 | .init_irq = iop32x_init_irq, | |
6bb27d73 | 365 | .init_time = n2100_timer_init, |
e60d07b6 | 366 | .init_machine = n2100_init_machine, |
bec92b1e | 367 | .restart = n2100_restart, |
e60d07b6 | 368 | MACHINE_END |