]>
Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
e60d07b6 LB |
2 | /* |
3 | * arch/arm/mach-iop32x/n2100.c | |
4 | * | |
5 | * Board support code for the Thecus N2100 platform. | |
6 | * | |
7 | * Author: Rory Bolt <rorybolt@pacbell.net> | |
8 | * Copyright (C) 2002 Rory Bolt | |
9 | * Copyright 2003 (c) MontaVista, Software, Inc. | |
10 | * Copyright (C) 2004 Intel Corp. | |
e60d07b6 LB |
11 | */ |
12 | ||
13 | #include <linux/mm.h> | |
14 | #include <linux/init.h> | |
9aa69338 | 15 | #include <linux/f75375s.h> |
30be0486 | 16 | #include <linux/leds-pca9532.h> |
e60d07b6 LB |
17 | #include <linux/delay.h> |
18 | #include <linux/kernel.h> | |
19 | #include <linux/pci.h> | |
20 | #include <linux/pm.h> | |
21 | #include <linux/string.h> | |
e60d07b6 LB |
22 | #include <linux/serial_core.h> |
23 | #include <linux/serial_8250.h> | |
24 | #include <linux/mtd/physmap.h> | |
c00593f6 | 25 | #include <linux/i2c.h> |
e60d07b6 LB |
26 | #include <linux/platform_device.h> |
27 | #include <linux/reboot.h> | |
fced80c7 | 28 | #include <linux/io.h> |
7111f878 | 29 | #include <linux/gpio.h> |
a09e64fb | 30 | #include <mach/hardware.h> |
e60d07b6 LB |
31 | #include <asm/irq.h> |
32 | #include <asm/mach/arch.h> | |
33 | #include <asm/mach/map.h> | |
34 | #include <asm/mach/pci.h> | |
35 | #include <asm/mach/time.h> | |
36 | #include <asm/mach-types.h> | |
37 | #include <asm/page.h> | |
38 | #include <asm/pgtable.h> | |
a09e64fb | 39 | #include <mach/time.h> |
7b85b867 | 40 | #include "gpio-iop32x.h" |
e60d07b6 LB |
41 | |
42 | /* | |
43 | * N2100 timer tick configuration. | |
44 | */ | |
45 | static void __init n2100_timer_init(void) | |
46 | { | |
47 | /* 33.000 MHz crystal. */ | |
3668b45d | 48 | iop_init_time(198000000); |
e60d07b6 LB |
49 | } |
50 | ||
e60d07b6 LB |
51 | |
52 | /* | |
53 | * N2100 I/O. | |
54 | */ | |
55 | static struct map_desc n2100_io_desc[] __initdata = { | |
56 | { /* on-board devices */ | |
57 | .virtual = N2100_UART, | |
58 | .pfn = __phys_to_pfn(N2100_UART), | |
59 | .length = 0x00100000, | |
60 | .type = MT_DEVICE | |
61 | }, | |
62 | }; | |
63 | ||
64 | void __init n2100_map_io(void) | |
65 | { | |
66 | iop3xx_map_io(); | |
67 | iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc)); | |
68 | } | |
69 | ||
70 | ||
71 | /* | |
72 | * N2100 PCI. | |
73 | */ | |
db409092 | 74 | static int n2100_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
e60d07b6 LB |
75 | { |
76 | int irq; | |
77 | ||
78 | if (PCI_SLOT(dev->devfn) == 1) { | |
79 | /* RTL8110SB #1 */ | |
80 | irq = IRQ_IOP32X_XINT0; | |
81 | } else if (PCI_SLOT(dev->devfn) == 2) { | |
82 | /* RTL8110SB #2 */ | |
811c9a4b | 83 | irq = IRQ_IOP32X_XINT3; |
e60d07b6 LB |
84 | } else if (PCI_SLOT(dev->devfn) == 3) { |
85 | /* Sil3512 */ | |
86 | irq = IRQ_IOP32X_XINT2; | |
87 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) { | |
88 | /* VT6212 INTA */ | |
89 | irq = IRQ_IOP32X_XINT1; | |
90 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) { | |
91 | /* VT6212 INTB */ | |
92 | irq = IRQ_IOP32X_XINT0; | |
93 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) { | |
94 | /* VT6212 INTC */ | |
95 | irq = IRQ_IOP32X_XINT2; | |
96 | } else if (PCI_SLOT(dev->devfn) == 5) { | |
97 | /* Mini-PCI slot */ | |
98 | irq = IRQ_IOP32X_XINT3; | |
99 | } else { | |
100 | printk(KERN_ERR "n2100_pci_map_irq() called for unknown " | |
101 | "device PCI:%d:%d:%d\n", dev->bus->number, | |
102 | PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)); | |
103 | irq = -1; | |
104 | } | |
105 | ||
106 | return irq; | |
107 | } | |
108 | ||
109 | static struct hw_pci n2100_pci __initdata = { | |
e60d07b6 | 110 | .nr_controllers = 1, |
c23bfc38 | 111 | .ops = &iop3xx_ops, |
e60d07b6 LB |
112 | .setup = iop3xx_pci_setup, |
113 | .preinit = iop3xx_pci_preinit, | |
e60d07b6 LB |
114 | .map_irq = n2100_pci_map_irq, |
115 | }; | |
116 | ||
66822b2e LB |
117 | /* |
118 | * Both r8169 chips on the n2100 exhibit PCI parity problems. Set | |
119 | * the ->broken_parity_status flag for both ports so that the r8169 | |
120 | * driver knows it should ignore error interrupts. | |
121 | */ | |
122 | static void n2100_fixup_r8169(struct pci_dev *dev) | |
123 | { | |
124 | if (dev->bus->number == 0 && | |
125 | (dev->devfn == PCI_DEVFN(1, 0) || | |
126 | dev->devfn == PCI_DEVFN(2, 0))) | |
127 | dev->broken_parity_status = 1; | |
128 | } | |
129 | DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169); | |
130 | ||
e60d07b6 LB |
131 | static int __init n2100_pci_init(void) |
132 | { | |
133 | if (machine_is_n2100()) | |
134 | pci_common_init(&n2100_pci); | |
135 | ||
136 | return 0; | |
137 | } | |
138 | ||
139 | subsys_initcall(n2100_pci_init); | |
140 | ||
141 | ||
142 | /* | |
143 | * N2100 machine initialisation. | |
144 | */ | |
145 | static struct physmap_flash_data n2100_flash_data = { | |
146 | .width = 2, | |
147 | }; | |
148 | ||
149 | static struct resource n2100_flash_resource = { | |
150 | .start = 0xf0000000, | |
151 | .end = 0xf0ffffff, | |
152 | .flags = IORESOURCE_MEM, | |
153 | }; | |
154 | ||
155 | static struct platform_device n2100_flash_device = { | |
156 | .name = "physmap-flash", | |
157 | .id = 0, | |
158 | .dev = { | |
159 | .platform_data = &n2100_flash_data, | |
160 | }, | |
161 | .num_resources = 1, | |
162 | .resource = &n2100_flash_resource, | |
163 | }; | |
164 | ||
165 | ||
166 | static struct plat_serial8250_port n2100_serial_port[] = { | |
167 | { | |
168 | .mapbase = N2100_UART, | |
169 | .membase = (char *)N2100_UART, | |
170 | .irq = 0, | |
cc761bed | 171 | .flags = UPF_SKIP_TEST | UPF_AUTO_IRQ | UPF_SHARE_IRQ, |
e60d07b6 LB |
172 | .iotype = UPIO_MEM, |
173 | .regshift = 0, | |
174 | .uartclk = 1843200, | |
175 | }, | |
176 | { }, | |
177 | }; | |
178 | ||
179 | static struct resource n2100_uart_resource = { | |
180 | .start = N2100_UART, | |
181 | .end = N2100_UART + 7, | |
182 | .flags = IORESOURCE_MEM, | |
183 | }; | |
184 | ||
185 | static struct platform_device n2100_serial_device = { | |
186 | .name = "serial8250", | |
187 | .id = PLAT8250_DEV_PLATFORM, | |
188 | .dev = { | |
189 | .platform_data = n2100_serial_port, | |
190 | }, | |
191 | .num_resources = 1, | |
192 | .resource = &n2100_uart_resource, | |
193 | }; | |
194 | ||
9aa69338 RV |
195 | static struct f75375s_platform_data n2100_f75375s = { |
196 | .pwm = { 255, 255 }, | |
197 | .pwm_enable = { 0, 0 }, | |
198 | }; | |
199 | ||
30be0486 RV |
200 | static struct pca9532_platform_data n2100_leds = { |
201 | .leds = { | |
202 | { .name = "n2100:red:satafail0", | |
203 | .state = PCA9532_OFF, | |
204 | .type = PCA9532_TYPE_LED, | |
205 | }, | |
206 | { .name = "n2100:red:satafail1", | |
207 | .state = PCA9532_OFF, | |
208 | .type = PCA9532_TYPE_LED, | |
209 | }, | |
210 | { .name = "n2100:blue:usb", | |
211 | .state = PCA9532_OFF, | |
212 | .type = PCA9532_TYPE_LED, | |
213 | }, | |
214 | { .type = PCA9532_TYPE_NONE }, | |
215 | ||
216 | { .type = PCA9532_TYPE_NONE }, | |
217 | { .type = PCA9532_TYPE_NONE }, | |
218 | { .type = PCA9532_TYPE_NONE }, | |
219 | { .name = "n2100:red:usb", | |
220 | .state = PCA9532_OFF, | |
221 | .type = PCA9532_TYPE_LED, | |
222 | }, | |
223 | ||
224 | { .type = PCA9532_TYPE_NONE }, /* power OFF gpio */ | |
225 | { .type = PCA9532_TYPE_NONE }, /* reset gpio */ | |
226 | { .type = PCA9532_TYPE_NONE }, | |
227 | { .type = PCA9532_TYPE_NONE }, | |
228 | ||
229 | { .type = PCA9532_TYPE_NONE }, | |
230 | { .name = "n2100:orange:system", | |
231 | .state = PCA9532_OFF, | |
232 | .type = PCA9532_TYPE_LED, | |
233 | }, | |
234 | { .name = "n2100:red:system", | |
235 | .state = PCA9532_OFF, | |
236 | .type = PCA9532_TYPE_LED, | |
237 | }, | |
238 | { .name = "N2100 beeper" , | |
239 | .state = PCA9532_OFF, | |
240 | .type = PCA9532_TYPE_N2100_BEEP, | |
241 | }, | |
242 | }, | |
243 | .psc = { 0, 0 }, | |
244 | .pwm = { 0, 0 }, | |
245 | }; | |
246 | ||
c00593f6 MM |
247 | static struct i2c_board_info __initdata n2100_i2c_devices[] = { |
248 | { | |
3760f736 | 249 | I2C_BOARD_INFO("rs5c372b", 0x32), |
c00593f6 | 250 | }, |
9aa69338 RV |
251 | { |
252 | I2C_BOARD_INFO("f75375", 0x2e), | |
9aa69338 RV |
253 | .platform_data = &n2100_f75375s, |
254 | }, | |
30be0486 RV |
255 | { |
256 | I2C_BOARD_INFO("pca9532", 0x60), | |
257 | .platform_data = &n2100_leds, | |
258 | }, | |
c00593f6 | 259 | }; |
e60d07b6 LB |
260 | |
261 | /* | |
262 | * Pull PCA9532 GPIO #8 low to power off the machine. | |
263 | */ | |
264 | static void n2100_power_off(void) | |
265 | { | |
266 | local_irq_disable(); | |
267 | ||
268 | /* Start condition, I2C address of PCA9532, write transaction. */ | |
269 | *IOP3XX_IDBR0 = 0xc0; | |
270 | *IOP3XX_ICR0 = 0xe9; | |
271 | mdelay(1); | |
272 | ||
273 | /* Write address 0x08. */ | |
274 | *IOP3XX_IDBR0 = 0x08; | |
275 | *IOP3XX_ICR0 = 0xe8; | |
276 | mdelay(1); | |
277 | ||
278 | /* Write data 0x01, stop condition. */ | |
279 | *IOP3XX_IDBR0 = 0x01; | |
280 | *IOP3XX_ICR0 = 0xea; | |
281 | ||
282 | while (1) | |
283 | ; | |
284 | } | |
285 | ||
7b6d864b | 286 | static void n2100_restart(enum reboot_mode mode, const char *cmd) |
bec92b1e | 287 | { |
7111f878 LW |
288 | int ret; |
289 | ||
290 | ret = gpio_direction_output(N2100_HARDWARE_RESET, 0); | |
291 | if (ret) { | |
292 | pr_crit("could not drive reset GPIO low\n"); | |
293 | return; | |
294 | } | |
295 | /* Wait for reset to happen */ | |
bec92b1e RK |
296 | while (1) |
297 | ; | |
298 | } | |
299 | ||
e60d07b6 LB |
300 | |
301 | static struct timer_list power_button_poll_timer; | |
302 | ||
e99e88a9 | 303 | static void power_button_poll(struct timer_list *unused) |
e60d07b6 | 304 | { |
afc3b79f | 305 | if (gpio_get_value(N2100_POWER_BUTTON) == 0) { |
e60d07b6 LB |
306 | ctrl_alt_del(); |
307 | return; | |
308 | } | |
309 | ||
310 | power_button_poll_timer.expires = jiffies + (HZ / 10); | |
311 | add_timer(&power_button_poll_timer); | |
312 | } | |
313 | ||
7111f878 LW |
314 | static int __init n2100_request_gpios(void) |
315 | { | |
316 | int ret; | |
317 | ||
318 | if (!machine_is_n2100()) | |
319 | return 0; | |
320 | ||
321 | ret = gpio_request(N2100_HARDWARE_RESET, "reset"); | |
322 | if (ret) | |
323 | pr_err("could not request reset GPIO\n"); | |
afc3b79f LW |
324 | |
325 | ret = gpio_request(N2100_POWER_BUTTON, "power"); | |
326 | if (ret) | |
327 | pr_err("could not request power GPIO\n"); | |
328 | else { | |
329 | ret = gpio_direction_input(N2100_POWER_BUTTON); | |
330 | if (ret) | |
331 | pr_err("could not set power GPIO as input\n"); | |
332 | } | |
333 | /* Set up power button poll timer */ | |
e99e88a9 | 334 | timer_setup(&power_button_poll_timer, power_button_poll, 0); |
afc3b79f LW |
335 | power_button_poll_timer.expires = jiffies + (HZ / 10); |
336 | add_timer(&power_button_poll_timer); | |
7111f878 LW |
337 | return 0; |
338 | } | |
339 | device_initcall(n2100_request_gpios); | |
e60d07b6 LB |
340 | |
341 | static void __init n2100_init_machine(void) | |
342 | { | |
7b85b867 | 343 | register_iop32x_gpio(); |
e60d07b6 LB |
344 | platform_device_register(&iop3xx_i2c0_device); |
345 | platform_device_register(&n2100_flash_device); | |
346 | platform_device_register(&n2100_serial_device); | |
2492c845 DW |
347 | platform_device_register(&iop3xx_dma_0_channel); |
348 | platform_device_register(&iop3xx_dma_1_channel); | |
e60d07b6 | 349 | |
c00593f6 MM |
350 | i2c_register_board_info(0, n2100_i2c_devices, |
351 | ARRAY_SIZE(n2100_i2c_devices)); | |
352 | ||
e60d07b6 | 353 | pm_power_off = n2100_power_off; |
e60d07b6 LB |
354 | } |
355 | ||
356 | MACHINE_START(N2100, "Thecus N2100") | |
357 | /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ | |
1896746d | 358 | .atag_offset = 0x100, |
e60d07b6 LB |
359 | .map_io = n2100_map_io, |
360 | .init_irq = iop32x_init_irq, | |
6bb27d73 | 361 | .init_time = n2100_timer_init, |
e60d07b6 | 362 | .init_machine = n2100_init_machine, |
bec92b1e | 363 | .restart = n2100_restart, |
e60d07b6 | 364 | MACHINE_END |