Merge tag 'sound-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
[linux-2.6-microblaze.git] / arch / arm / mach-iop32x / n2100.c
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 <linux/gpio.h>
34 #include <mach/hardware.h>
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>
43 #include <mach/time.h>
44 #include "gpio-iop32x.h"
45
46 /*
47  * N2100 timer tick configuration.
48  */
49 static void __init n2100_timer_init(void)
50 {
51         /* 33.000 MHz crystal.  */
52         iop_init_time(198000000);
53 }
54
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  */
78 static int n2100_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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 */
87                 irq = IRQ_IOP32X_XINT3;
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 = {
114         .nr_controllers = 1,
115         .ops            = &iop3xx_ops,
116         .setup          = iop3xx_pci_setup,
117         .preinit        = iop3xx_pci_preinit,
118         .map_irq        = n2100_pci_map_irq,
119 };
120
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
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,
175                 .flags          = UPF_SKIP_TEST | UPF_AUTO_IRQ | UPF_SHARE_IRQ,
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
199 static struct f75375s_platform_data n2100_f75375s = {
200         .pwm            = { 255, 255 },
201         .pwm_enable = { 0, 0 },
202 };
203
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
251 static struct i2c_board_info __initdata n2100_i2c_devices[] = {
252         {
253                 I2C_BOARD_INFO("rs5c372b", 0x32),
254         },
255         {
256                 I2C_BOARD_INFO("f75375", 0x2e),
257                 .platform_data = &n2100_f75375s,
258         },
259         {
260                 I2C_BOARD_INFO("pca9532", 0x60),
261                 .platform_data = &n2100_leds,
262         },
263 };
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
290 static void n2100_restart(enum reboot_mode mode, const char *cmd)
291 {
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 */
300         while (1)
301                 ;
302 }
303
304
305 static struct timer_list power_button_poll_timer;
306
307 static void power_button_poll(struct timer_list *unused)
308 {
309         if (gpio_get_value(N2100_POWER_BUTTON) == 0) {
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
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");
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 */
338         timer_setup(&power_button_poll_timer, power_button_poll, 0);
339         power_button_poll_timer.expires = jiffies + (HZ / 10);
340         add_timer(&power_button_poll_timer);
341         return 0;
342 }
343 device_initcall(n2100_request_gpios);
344
345 static void __init n2100_init_machine(void)
346 {
347         register_iop32x_gpio();
348         platform_device_register(&iop3xx_i2c0_device);
349         platform_device_register(&n2100_flash_device);
350         platform_device_register(&n2100_serial_device);
351         platform_device_register(&iop3xx_dma_0_channel);
352         platform_device_register(&iop3xx_dma_1_channel);
353
354         i2c_register_board_info(0, n2100_i2c_devices,
355                 ARRAY_SIZE(n2100_i2c_devices));
356
357         pm_power_off = n2100_power_off;
358 }
359
360 MACHINE_START(N2100, "Thecus N2100")
361         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
362         .atag_offset    = 0x100,
363         .map_io         = n2100_map_io,
364         .init_irq       = iop32x_init_irq,
365         .init_time      = n2100_timer_init,
366         .init_machine   = n2100_init_machine,
367         .restart        = n2100_restart,
368 MACHINE_END