f3a9372d88094faedc66e52a9f372c6cbb3de650
[openwrt/svn-archive/archive.git] / target / linux / ar7 / files / arch / mips / ar7 / platform.c
1 /*
2 * Copyright (C) 2006, 2007 OpenWrt.org
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include <linux/autoconf.h>
20 #include <linux/init.h>
21 #include <linux/types.h>
22 #include <linux/module.h>
23 #include <linux/delay.h>
24 #include <linux/dma-mapping.h>
25 #include <linux/platform_device.h>
26 #include <linux/mtd/physmap.h>
27 #include <linux/serial.h>
28 #include <linux/serial_8250.h>
29 #include <linux/ioport.h>
30 #include <linux/io.h>
31 #include <linux/version.h>
32 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
33 #include <linux/leds.h>
34 #endif
35
36 #include <asm/addrspace.h>
37 #include <asm/ar7/ar7.h>
38 #include <asm/ar7/gpio.h>
39 #include <asm/ar7/prom.h>
40 #include <asm/ar7/vlynq.h>
41
42 struct plat_vlynq_data {
43 struct plat_vlynq_ops ops;
44 int gpio_bit;
45 int reset_bit;
46 };
47
48
49 static int vlynq_on(struct vlynq_device *dev)
50 {
51 int result;
52 struct plat_vlynq_data *pdata = dev->dev.platform_data;
53
54 if ((result = gpio_request(pdata->gpio_bit, "vlynq")))
55 goto out;
56
57 ar7_device_reset(pdata->reset_bit);
58
59 if ((result = ar7_gpio_disable(pdata->gpio_bit)))
60 goto out_enabled;
61
62 if ((result = ar7_gpio_enable(pdata->gpio_bit)))
63 goto out_enabled;
64
65 if ((result = gpio_direction_output(pdata->gpio_bit, 0)))
66 goto out_gpio_enabled;
67
68 mdelay(50);
69
70 gpio_set_value(pdata->gpio_bit, 1);
71 mdelay(50);
72
73 return 0;
74
75 out_gpio_enabled:
76 ar7_gpio_disable(pdata->gpio_bit);
77 out_enabled:
78 ar7_device_disable(pdata->reset_bit);
79 gpio_free(pdata->gpio_bit);
80 out:
81 return result;
82 }
83
84 static void vlynq_off(struct vlynq_device *dev)
85 {
86 struct plat_vlynq_data *pdata = dev->dev.platform_data;
87 ar7_gpio_disable(pdata->gpio_bit);
88 gpio_free(pdata->gpio_bit);
89 ar7_device_disable(pdata->reset_bit);
90 }
91
92 static struct resource physmap_flash_resource = {
93 .name = "mem",
94 .flags = IORESOURCE_MEM,
95 .start = 0x10000000,
96 .end = 0x107fffff,
97 };
98
99 static struct resource cpmac_low_res[] = {
100 {
101 .name = "regs",
102 .flags = IORESOURCE_MEM,
103 .start = AR7_REGS_MAC0,
104 .end = AR7_REGS_MAC0 + 0x7ff,
105 },
106 {
107 .name = "irq",
108 .flags = IORESOURCE_IRQ,
109 .start = 27,
110 .end = 27,
111 },
112 };
113
114 static struct resource cpmac_high_res[] = {
115 {
116 .name = "regs",
117 .flags = IORESOURCE_MEM,
118 .start = AR7_REGS_MAC1,
119 .end = AR7_REGS_MAC1 + 0x7ff,
120 },
121 {
122 .name = "irq",
123 .flags = IORESOURCE_IRQ,
124 .start = 41,
125 .end = 41,
126 },
127 };
128
129 static struct resource vlynq_low_res[] = {
130 {
131 .name = "regs",
132 .flags = IORESOURCE_MEM,
133 .start = AR7_REGS_VLYNQ0,
134 .end = AR7_REGS_VLYNQ0 + 0xff,
135 },
136 {
137 .name = "irq",
138 .flags = IORESOURCE_IRQ,
139 .start = 29,
140 .end = 29,
141 },
142 {
143 .name = "mem",
144 .flags = IORESOURCE_MEM,
145 .start = 0x04000000,
146 .end = 0x04ffffff,
147 },
148 {
149 .name = "devirq",
150 .flags = IORESOURCE_IRQ,
151 .start = 80,
152 .end = 111,
153 },
154 };
155
156 static struct resource vlynq_high_res[] = {
157 {
158 .name = "regs",
159 .flags = IORESOURCE_MEM,
160 .start = AR7_REGS_VLYNQ1,
161 .end = AR7_REGS_VLYNQ1 + 0xff,
162 },
163 {
164 .name = "irq",
165 .flags = IORESOURCE_IRQ,
166 .start = 33,
167 .end = 33,
168 },
169 {
170 .name = "mem",
171 .flags = IORESOURCE_MEM,
172 .start = 0x0c000000,
173 .end = 0x0cffffff,
174 },
175 {
176 .name = "devirq",
177 .flags = IORESOURCE_IRQ,
178 .start = 112,
179 .end = 143,
180 },
181 };
182
183 static struct resource usb_res[] = {
184 {
185 .name = "regs",
186 .flags = IORESOURCE_MEM,
187 .start = AR7_REGS_USB,
188 .end = AR7_REGS_USB + 0xff,
189 },
190 {
191 .name = "irq",
192 .flags = IORESOURCE_IRQ,
193 .start = 32,
194 .end = 32,
195 },
196 {
197 .name = "mem",
198 .flags = IORESOURCE_MEM,
199 .start = 0x03400000,
200 .end = 0x034001fff,
201 },
202 };
203
204 static struct physmap_flash_data physmap_flash_data = {
205 .width = 2,
206 };
207
208 static struct plat_cpmac_data cpmac_low_data = {
209 .reset_bit = 17,
210 .power_bit = 20,
211 .phy_mask = 0x80000000,
212 };
213
214 static struct plat_cpmac_data cpmac_high_data = {
215 .reset_bit = 21,
216 .power_bit = 22,
217 .phy_mask = 0x7fffffff,
218 };
219
220 static struct plat_vlynq_data vlynq_low_data = {
221 .ops.on = vlynq_on,
222 .ops.off = vlynq_off,
223 .reset_bit = 20,
224 .gpio_bit = 18,
225 };
226
227 static struct plat_vlynq_data vlynq_high_data = {
228 .ops.on = vlynq_on,
229 .ops.off = vlynq_off,
230 .reset_bit = 16,
231 .gpio_bit = 19,
232 };
233
234 static struct platform_device physmap_flash = {
235 .id = 0,
236 .name = "physmap-flash",
237 .dev.platform_data = &physmap_flash_data,
238 .resource = &physmap_flash_resource,
239 .num_resources = 1,
240 };
241
242 static u64 cpmac_dma_mask = DMA_32BIT_MASK;
243 static struct platform_device cpmac_low = {
244 .id = 0,
245 .name = "cpmac",
246 .dev = {
247 .dma_mask = &cpmac_dma_mask,
248 .coherent_dma_mask = DMA_32BIT_MASK,
249 .platform_data = &cpmac_low_data,
250 },
251 .resource = cpmac_low_res,
252 .num_resources = ARRAY_SIZE(cpmac_low_res),
253 };
254
255 static struct platform_device cpmac_high = {
256 .id = 1,
257 .name = "cpmac",
258 .dev = {
259 .dma_mask = &cpmac_dma_mask,
260 .coherent_dma_mask = DMA_32BIT_MASK,
261 .platform_data = &cpmac_high_data,
262 },
263 .resource = cpmac_high_res,
264 .num_resources = ARRAY_SIZE(cpmac_high_res),
265 };
266
267 static struct platform_device vlynq_low = {
268 .id = 0,
269 .name = "vlynq",
270 .dev.platform_data = &vlynq_low_data,
271 .resource = vlynq_low_res,
272 .num_resources = ARRAY_SIZE(vlynq_low_res),
273 };
274
275 static struct platform_device vlynq_high = {
276 .id = 1,
277 .name = "vlynq",
278 .dev.platform_data = &vlynq_high_data,
279 .resource = vlynq_high_res,
280 .num_resources = ARRAY_SIZE(vlynq_high_res),
281 };
282
283
284 /* This is proper way to define uart ports, but they are then detected
285 * as xscale and, obviously, don't work...
286 */
287 #if !defined(CONFIG_SERIAL_8250)
288
289 static struct plat_serial8250_port uart0_data = {
290 .mapbase = AR7_REGS_UART0,
291 .irq = AR7_IRQ_UART0,
292 .regshift = 2,
293 .iotype = UPIO_MEM,
294 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
295 };
296
297 static struct plat_serial8250_port uart1_data = {
298 .mapbase = UR8_REGS_UART1,
299 .irq = AR7_IRQ_UART1,
300 .regshift = 2,
301 .iotype = UPIO_MEM,
302 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
303 };
304
305 static struct plat_serial8250_port uart_data[] = {
306 uart0_data,
307 uart1_data,
308 { .flags = 0 }
309 };
310
311 static struct plat_serial8250_port uart_data_single[] = {
312 uart0_data,
313 { .flags = 0 }
314 };
315
316 static struct platform_device uart = {
317 .id = 0,
318 .name = "serial8250",
319 .dev.platform_data = uart_data_single
320 };
321 #endif
322
323 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
324 static struct gpio_led default_leds[] = {
325 { .name = "status", .gpio = 8, .active_low = 1, },
326 };
327
328 static struct gpio_led fb_leds[] = {
329 { .name = "1", .gpio = 7, },
330 { .name = "2", .gpio = 13, .active_low = 1, },
331 { .name = "3", .gpio = 10, .active_low = 1, },
332 { .name = "4", .gpio = 12, .active_low = 1, },
333 { .name = "5", .gpio = 9, .active_low = 1, },
334 };
335
336 static struct gpio_led fb_fon_leds[] = {
337 { .name = "1", .gpio = 8, },
338 { .name = "2", .gpio = 3, .active_low = 1, },
339 { .name = "3", .gpio = 5, },
340 { .name = "4", .gpio = 4, .active_low = 1, },
341 { .name = "5", .gpio = 11, .active_low = 1, },
342 };
343
344 static struct gpio_led_platform_data ar7_led_data;
345
346 static struct platform_device ar7_gpio_leds = {
347 .name = "leds-gpio",
348 .id = -1,
349 .dev = {
350 .platform_data = &ar7_led_data,
351 }
352 };
353 #endif
354
355 static struct platform_device ar7_udc = {
356 .id = -1,
357 .name = "ar7_udc",
358 .resource = usb_res,
359 .num_resources = ARRAY_SIZE(usb_res),
360 };
361
362 static inline unsigned char char2hex(char h)
363 {
364 switch (h) {
365 case '0': case '1': case '2': case '3': case '4':
366 case '5': case '6': case '7': case '8': case '9':
367 return h - '0';
368 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
369 return h - 'A' + 10;
370 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
371 return h - 'a' + 10;
372 default:
373 return 0;
374 }
375 }
376
377 static void cpmac_get_mac(int instance, unsigned char *dev_addr)
378 {
379 int i;
380 char name[5], default_mac[] = "00:00:00:12:34:56", *mac;
381
382 mac = NULL;
383 sprintf(name, "mac%c", 'a' + instance);
384 mac = prom_getenv(name);
385 if (!mac) {
386 sprintf(name, "mac%c", 'a');
387 mac = prom_getenv(name);
388 }
389 if (!mac)
390 mac = default_mac;
391 for (i = 0; i < 6; i++)
392 dev_addr[i] = (char2hex(mac[i * 3]) << 4) +
393 char2hex(mac[i * 3 + 1]);
394 }
395
396 static int __init ar7_register_devices(void)
397 {
398 int res;
399
400 #ifdef CONFIG_SERIAL_8250
401
402 static struct uart_port uart_port[2];
403
404 memset(uart_port, 0, sizeof(struct uart_port) * 2);
405
406 uart_port[0].type = PORT_AR7;
407 uart_port[0].line = 0;
408 uart_port[0].irq = AR7_IRQ_UART0;
409 uart_port[0].uartclk = ar7_bus_freq() / 2;
410 uart_port[0].iotype = UPIO_MEM;
411 uart_port[0].mapbase = AR7_REGS_UART0;
412 uart_port[0].membase = ioremap(uart_port[0].mapbase, 256);
413 uart_port[0].regshift = 2;
414 res = early_serial_setup(&uart_port[0]);
415 if (res)
416 return res;
417
418
419 /* Only TNETD73xx have a second serial port */
420 if (ar7_has_second_uart()) {
421 uart_port[1].type = PORT_AR7;
422 uart_port[1].line = 1;
423 uart_port[1].irq = AR7_IRQ_UART1;
424 uart_port[1].uartclk = ar7_bus_freq() / 2;
425 uart_port[1].iotype = UPIO_MEM;
426 uart_port[1].mapbase = UR8_REGS_UART1;
427 uart_port[1].membase = ioremap(uart_port[1].mapbase, 256);
428 uart_port[1].regshift = 2;
429 res = early_serial_setup(&uart_port[1]);
430 if (res)
431 return res;
432 }
433
434 #else /* !CONFIG_SERIAL_8250 */
435
436 uart_data[0].uartclk = ar7_bus_freq() / 2;
437 uart_data[1].uartclk = uart_data[0].uartclk;
438
439 /* Only TNETD73xx have a second serial port */
440 if (ar7_has_second_uart())
441 uart.dev.platform_data = uart_data;
442
443 res = platform_device_register(&uart);
444 if (res)
445 return res;
446
447 #endif /* CONFIG_SERIAL_8250 */
448
449 res = platform_device_register(&physmap_flash);
450 if (res)
451 return res;
452
453 res = platform_device_register(&vlynq_low);
454 if (res)
455 return res;
456
457 ar7_device_disable(vlynq_low_data.reset_bit);
458 if (ar7_has_high_vlynq()) {
459 ar7_device_disable(vlynq_high_data.reset_bit);
460 res = platform_device_register(&vlynq_high);
461 if (res)
462 return res;
463 }
464
465 if (ar7_has_high_cpmac()) {
466 cpmac_get_mac(1, cpmac_high_data.dev_addr);
467 res = platform_device_register(&cpmac_high);
468 if (res)
469 return res;
470 } else {
471 cpmac_low_data.phy_mask = 0xffffffff;
472 }
473
474 cpmac_get_mac(0, cpmac_low_data.dev_addr);
475 res = platform_device_register(&cpmac_low);
476 if (res)
477 return res;
478
479 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
480 #warning FIXME: add model detection
481 ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
482 ar7_led_data.leds = default_leds;
483 res = platform_device_register(&ar7_gpio_leds);
484 #endif
485 if (res)
486 return res;
487
488 res = platform_device_register(&ar7_udc);
489
490 return res;
491 }
492
493
494 arch_initcall(ar7_register_devices);