]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blame - arch/arm/mach-iop32x/n2100.c
treewide: setup_timer() -> timer_setup()
[mirror_ubuntu-bionic-kernel.git] / arch / arm / mach-iop32x / n2100.c
CommitLineData
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 */
49static 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 */
59static 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
68void __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 */
d73d8011 78static int __init
d5341942 79n2100_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
e60d07b6
LB
80{
81 int irq;
82
83 if (PCI_SLOT(dev->devfn) == 1) {
84 /* RTL8110SB #1 */
85 irq = IRQ_IOP32X_XINT0;
86 } else if (PCI_SLOT(dev->devfn) == 2) {
87 /* RTL8110SB #2 */
811c9a4b 88 irq = IRQ_IOP32X_XINT3;
e60d07b6
LB
89 } else if (PCI_SLOT(dev->devfn) == 3) {
90 /* Sil3512 */
91 irq = IRQ_IOP32X_XINT2;
92 } else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) {
93 /* VT6212 INTA */
94 irq = IRQ_IOP32X_XINT1;
95 } else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) {
96 /* VT6212 INTB */
97 irq = IRQ_IOP32X_XINT0;
98 } else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) {
99 /* VT6212 INTC */
100 irq = IRQ_IOP32X_XINT2;
101 } else if (PCI_SLOT(dev->devfn) == 5) {
102 /* Mini-PCI slot */
103 irq = IRQ_IOP32X_XINT3;
104 } else {
105 printk(KERN_ERR "n2100_pci_map_irq() called for unknown "
106 "device PCI:%d:%d:%d\n", dev->bus->number,
107 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
108 irq = -1;
109 }
110
111 return irq;
112}
113
114static struct hw_pci n2100_pci __initdata = {
e60d07b6 115 .nr_controllers = 1,
c23bfc38 116 .ops = &iop3xx_ops,
e60d07b6
LB
117 .setup = iop3xx_pci_setup,
118 .preinit = iop3xx_pci_preinit,
e60d07b6
LB
119 .map_irq = n2100_pci_map_irq,
120};
121
66822b2e
LB
122/*
123 * Both r8169 chips on the n2100 exhibit PCI parity problems. Set
124 * the ->broken_parity_status flag for both ports so that the r8169
125 * driver knows it should ignore error interrupts.
126 */
127static void n2100_fixup_r8169(struct pci_dev *dev)
128{
129 if (dev->bus->number == 0 &&
130 (dev->devfn == PCI_DEVFN(1, 0) ||
131 dev->devfn == PCI_DEVFN(2, 0)))
132 dev->broken_parity_status = 1;
133}
134DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169);
135
e60d07b6
LB
136static int __init n2100_pci_init(void)
137{
138 if (machine_is_n2100())
139 pci_common_init(&n2100_pci);
140
141 return 0;
142}
143
144subsys_initcall(n2100_pci_init);
145
146
147/*
148 * N2100 machine initialisation.
149 */
150static struct physmap_flash_data n2100_flash_data = {
151 .width = 2,
152};
153
154static struct resource n2100_flash_resource = {
155 .start = 0xf0000000,
156 .end = 0xf0ffffff,
157 .flags = IORESOURCE_MEM,
158};
159
160static struct platform_device n2100_flash_device = {
161 .name = "physmap-flash",
162 .id = 0,
163 .dev = {
164 .platform_data = &n2100_flash_data,
165 },
166 .num_resources = 1,
167 .resource = &n2100_flash_resource,
168};
169
170
171static struct plat_serial8250_port n2100_serial_port[] = {
172 {
173 .mapbase = N2100_UART,
174 .membase = (char *)N2100_UART,
175 .irq = 0,
cc761bed 176 .flags = UPF_SKIP_TEST | UPF_AUTO_IRQ | UPF_SHARE_IRQ,
e60d07b6
LB
177 .iotype = UPIO_MEM,
178 .regshift = 0,
179 .uartclk = 1843200,
180 },
181 { },
182};
183
184static struct resource n2100_uart_resource = {
185 .start = N2100_UART,
186 .end = N2100_UART + 7,
187 .flags = IORESOURCE_MEM,
188};
189
190static struct platform_device n2100_serial_device = {
191 .name = "serial8250",
192 .id = PLAT8250_DEV_PLATFORM,
193 .dev = {
194 .platform_data = n2100_serial_port,
195 },
196 .num_resources = 1,
197 .resource = &n2100_uart_resource,
198};
199
9aa69338
RV
200static struct f75375s_platform_data n2100_f75375s = {
201 .pwm = { 255, 255 },
202 .pwm_enable = { 0, 0 },
203};
204
30be0486
RV
205static struct pca9532_platform_data n2100_leds = {
206 .leds = {
207 { .name = "n2100:red:satafail0",
208 .state = PCA9532_OFF,
209 .type = PCA9532_TYPE_LED,
210 },
211 { .name = "n2100:red:satafail1",
212 .state = PCA9532_OFF,
213 .type = PCA9532_TYPE_LED,
214 },
215 { .name = "n2100:blue:usb",
216 .state = PCA9532_OFF,
217 .type = PCA9532_TYPE_LED,
218 },
219 { .type = PCA9532_TYPE_NONE },
220
221 { .type = PCA9532_TYPE_NONE },
222 { .type = PCA9532_TYPE_NONE },
223 { .type = PCA9532_TYPE_NONE },
224 { .name = "n2100:red:usb",
225 .state = PCA9532_OFF,
226 .type = PCA9532_TYPE_LED,
227 },
228
229 { .type = PCA9532_TYPE_NONE }, /* power OFF gpio */
230 { .type = PCA9532_TYPE_NONE }, /* reset gpio */
231 { .type = PCA9532_TYPE_NONE },
232 { .type = PCA9532_TYPE_NONE },
233
234 { .type = PCA9532_TYPE_NONE },
235 { .name = "n2100:orange:system",
236 .state = PCA9532_OFF,
237 .type = PCA9532_TYPE_LED,
238 },
239 { .name = "n2100:red:system",
240 .state = PCA9532_OFF,
241 .type = PCA9532_TYPE_LED,
242 },
243 { .name = "N2100 beeper" ,
244 .state = PCA9532_OFF,
245 .type = PCA9532_TYPE_N2100_BEEP,
246 },
247 },
248 .psc = { 0, 0 },
249 .pwm = { 0, 0 },
250};
251
c00593f6
MM
252static struct i2c_board_info __initdata n2100_i2c_devices[] = {
253 {
3760f736 254 I2C_BOARD_INFO("rs5c372b", 0x32),
c00593f6 255 },
9aa69338
RV
256 {
257 I2C_BOARD_INFO("f75375", 0x2e),
9aa69338
RV
258 .platform_data = &n2100_f75375s,
259 },
30be0486
RV
260 {
261 I2C_BOARD_INFO("pca9532", 0x60),
262 .platform_data = &n2100_leds,
263 },
c00593f6 264};
e60d07b6
LB
265
266/*
267 * Pull PCA9532 GPIO #8 low to power off the machine.
268 */
269static void n2100_power_off(void)
270{
271 local_irq_disable();
272
273 /* Start condition, I2C address of PCA9532, write transaction. */
274 *IOP3XX_IDBR0 = 0xc0;
275 *IOP3XX_ICR0 = 0xe9;
276 mdelay(1);
277
278 /* Write address 0x08. */
279 *IOP3XX_IDBR0 = 0x08;
280 *IOP3XX_ICR0 = 0xe8;
281 mdelay(1);
282
283 /* Write data 0x01, stop condition. */
284 *IOP3XX_IDBR0 = 0x01;
285 *IOP3XX_ICR0 = 0xea;
286
287 while (1)
288 ;
289}
290
7b6d864b 291static void n2100_restart(enum reboot_mode mode, const char *cmd)
bec92b1e 292{
7111f878
LW
293 int ret;
294
295 ret = gpio_direction_output(N2100_HARDWARE_RESET, 0);
296 if (ret) {
297 pr_crit("could not drive reset GPIO low\n");
298 return;
299 }
300 /* Wait for reset to happen */
bec92b1e
RK
301 while (1)
302 ;
303}
304
e60d07b6
LB
305
306static struct timer_list power_button_poll_timer;
307
e99e88a9 308static void power_button_poll(struct timer_list *unused)
e60d07b6 309{
afc3b79f 310 if (gpio_get_value(N2100_POWER_BUTTON) == 0) {
e60d07b6
LB
311 ctrl_alt_del();
312 return;
313 }
314
315 power_button_poll_timer.expires = jiffies + (HZ / 10);
316 add_timer(&power_button_poll_timer);
317}
318
7111f878
LW
319static int __init n2100_request_gpios(void)
320{
321 int ret;
322
323 if (!machine_is_n2100())
324 return 0;
325
326 ret = gpio_request(N2100_HARDWARE_RESET, "reset");
327 if (ret)
328 pr_err("could not request reset GPIO\n");
afc3b79f
LW
329
330 ret = gpio_request(N2100_POWER_BUTTON, "power");
331 if (ret)
332 pr_err("could not request power GPIO\n");
333 else {
334 ret = gpio_direction_input(N2100_POWER_BUTTON);
335 if (ret)
336 pr_err("could not set power GPIO as input\n");
337 }
338 /* Set up power button poll timer */
e99e88a9 339 timer_setup(&power_button_poll_timer, power_button_poll, 0);
afc3b79f
LW
340 power_button_poll_timer.expires = jiffies + (HZ / 10);
341 add_timer(&power_button_poll_timer);
7111f878
LW
342 return 0;
343}
344device_initcall(n2100_request_gpios);
e60d07b6
LB
345
346static void __init n2100_init_machine(void)
347{
7b85b867 348 register_iop32x_gpio();
e60d07b6
LB
349 platform_device_register(&iop3xx_i2c0_device);
350 platform_device_register(&n2100_flash_device);
351 platform_device_register(&n2100_serial_device);
2492c845
DW
352 platform_device_register(&iop3xx_dma_0_channel);
353 platform_device_register(&iop3xx_dma_1_channel);
e60d07b6 354
c00593f6
MM
355 i2c_register_board_info(0, n2100_i2c_devices,
356 ARRAY_SIZE(n2100_i2c_devices));
357
e60d07b6 358 pm_power_off = n2100_power_off;
e60d07b6
LB
359}
360
361MACHINE_START(N2100, "Thecus N2100")
362 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
1896746d 363 .atag_offset = 0x100,
e60d07b6
LB
364 .map_io = n2100_map_io,
365 .init_irq = iop32x_init_irq,
6bb27d73 366 .init_time = n2100_timer_init,
e60d07b6 367 .init_machine = n2100_init_machine,
bec92b1e 368 .restart = n2100_restart,
e60d07b6 369MACHINE_END