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Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
[linux/fpc-iii.git] / arch / mips / ar7 / platform.c
blob566f2d7f2ea386b662dc9ceaaf82148c33b01ae9
1 /*
2 * Copyright (C) 2006,2007 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2006,2007 Eugene Konev <ejka@openwrt.org>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
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/vlynq.h>
32 #include <linux/leds.h>
33 #include <linux/string.h>
34 #include <linux/etherdevice.h>
35 #include <linux/phy.h>
36 #include <linux/phy_fixed.h>
37 #include <linux/gpio.h>
38 #include <linux/clk.h>
39
40 #include <asm/addrspace.h>
41 #include <asm/mach-ar7/ar7.h>
42 #include <asm/mach-ar7/gpio.h>
43 #include <asm/mach-ar7/prom.h>
44
45 /*****************************************************************************
46 * VLYNQ Bus
47 ****************************************************************************/
48 struct plat_vlynq_data {
49 struct plat_vlynq_ops ops;
50 int gpio_bit;
51 int reset_bit;
52 };
53
54 static int vlynq_on(struct vlynq_device *dev)
55 {
56 int ret;
57 struct plat_vlynq_data *pdata = dev->dev.platform_data;
58
59 ret = gpio_request(pdata->gpio_bit, "vlynq");
60 if (ret)
61 goto out;
62
63 ar7_device_reset(pdata->reset_bit);
64
65 ret = ar7_gpio_disable(pdata->gpio_bit);
66 if (ret)
67 goto out_enabled;
68
69 ret = ar7_gpio_enable(pdata->gpio_bit);
70 if (ret)
71 goto out_enabled;
72
73 ret = gpio_direction_output(pdata->gpio_bit, 0);
74 if (ret)
75 goto out_gpio_enabled;
76
77 msleep(50);
78
79 gpio_set_value(pdata->gpio_bit, 1);
80
81 msleep(50);
82
83 return 0;
84
85 out_gpio_enabled:
86 ar7_gpio_disable(pdata->gpio_bit);
87 out_enabled:
88 ar7_device_disable(pdata->reset_bit);
89 gpio_free(pdata->gpio_bit);
90 out:
91 return ret;
92 }
93
94 static void vlynq_off(struct vlynq_device *dev)
95 {
96 struct plat_vlynq_data *pdata = dev->dev.platform_data;
97
98 ar7_gpio_disable(pdata->gpio_bit);
99 gpio_free(pdata->gpio_bit);
100 ar7_device_disable(pdata->reset_bit);
101 }
102
103 static struct resource vlynq_low_res[] = {
104 {
105 .name = "regs",
106 .flags = IORESOURCE_MEM,
107 .start = AR7_REGS_VLYNQ0,
108 .end = AR7_REGS_VLYNQ0 + 0xff,
109 },
110 {
111 .name = "irq",
112 .flags = IORESOURCE_IRQ,
113 .start = 29,
114 .end = 29,
115 },
116 {
117 .name = "mem",
118 .flags = IORESOURCE_MEM,
119 .start = 0x04000000,
120 .end = 0x04ffffff,
121 },
122 {
123 .name = "devirq",
124 .flags = IORESOURCE_IRQ,
125 .start = 80,
126 .end = 111,
127 },
128 };
129
130 static struct resource vlynq_high_res[] = {
131 {
132 .name = "regs",
133 .flags = IORESOURCE_MEM,
134 .start = AR7_REGS_VLYNQ1,
135 .end = AR7_REGS_VLYNQ1 + 0xff,
136 },
137 {
138 .name = "irq",
139 .flags = IORESOURCE_IRQ,
140 .start = 33,
141 .end = 33,
142 },
143 {
144 .name = "mem",
145 .flags = IORESOURCE_MEM,
146 .start = 0x0c000000,
147 .end = 0x0cffffff,
148 },
149 {
150 .name = "devirq",
151 .flags = IORESOURCE_IRQ,
152 .start = 112,
153 .end = 143,
154 },
155 };
156
157 static struct plat_vlynq_data vlynq_low_data = {
158 .ops = {
159 .on = vlynq_on,
160 .off = vlynq_off,
161 },
162 .reset_bit = 20,
163 .gpio_bit = 18,
164 };
165
166 static struct plat_vlynq_data vlynq_high_data = {
167 .ops = {
168 .on = vlynq_on,
169 .off = vlynq_off,
170 },
171 .reset_bit = 16,
172 .gpio_bit = 19,
173 };
174
175 static struct platform_device vlynq_low = {
176 .id = 0,
177 .name = "vlynq",
178 .dev = {
179 .platform_data = &vlynq_low_data,
180 },
181 .resource = vlynq_low_res,
182 .num_resources = ARRAY_SIZE(vlynq_low_res),
183 };
184
185 static struct platform_device vlynq_high = {
186 .id = 1,
187 .name = "vlynq",
188 .dev = {
189 .platform_data = &vlynq_high_data,
190 },
191 .resource = vlynq_high_res,
192 .num_resources = ARRAY_SIZE(vlynq_high_res),
193 };
194
195 /*****************************************************************************
196 * Flash
197 ****************************************************************************/
198 static struct resource physmap_flash_resource = {
199 .name = "mem",
200 .flags = IORESOURCE_MEM,
201 .start = 0x10000000,
202 .end = 0x107fffff,
203 };
204
205 static struct physmap_flash_data physmap_flash_data = {
206 .width = 2,
207 };
208
209 static struct platform_device physmap_flash = {
210 .name = "physmap-flash",
211 .dev = {
212 .platform_data = &physmap_flash_data,
213 },
214 .resource = &physmap_flash_resource,
215 .num_resources = 1,
216 };
217
218 /*****************************************************************************
219 * Ethernet
220 ****************************************************************************/
221 static struct resource cpmac_low_res[] = {
222 {
223 .name = "regs",
224 .flags = IORESOURCE_MEM,
225 .start = AR7_REGS_MAC0,
226 .end = AR7_REGS_MAC0 + 0x7ff,
227 },
228 {
229 .name = "irq",
230 .flags = IORESOURCE_IRQ,
231 .start = 27,
232 .end = 27,
233 },
234 };
235
236 static struct resource cpmac_high_res[] = {
237 {
238 .name = "regs",
239 .flags = IORESOURCE_MEM,
240 .start = AR7_REGS_MAC1,
241 .end = AR7_REGS_MAC1 + 0x7ff,
242 },
243 {
244 .name = "irq",
245 .flags = IORESOURCE_IRQ,
246 .start = 41,
247 .end = 41,
248 },
249 };
250
251 static struct fixed_phy_status fixed_phy_status __initdata = {
252 .link = 1,
253 .speed = 100,
254 .duplex = 1,
255 };
256
257 static struct plat_cpmac_data cpmac_low_data = {
258 .reset_bit = 17,
259 .power_bit = 20,
260 .phy_mask = 0x80000000,
261 };
262
263 static struct plat_cpmac_data cpmac_high_data = {
264 .reset_bit = 21,
265 .power_bit = 22,
266 .phy_mask = 0x7fffffff,
267 };
268
269 static u64 cpmac_dma_mask = DMA_BIT_MASK(32);
270
271 static struct platform_device cpmac_low = {
272 .id = 0,
273 .name = "cpmac",
274 .dev = {
275 .dma_mask = &cpmac_dma_mask,
276 .coherent_dma_mask = DMA_BIT_MASK(32),
277 .platform_data = &cpmac_low_data,
278 },
279 .resource = cpmac_low_res,
280 .num_resources = ARRAY_SIZE(cpmac_low_res),
281 };
282
283 static struct platform_device cpmac_high = {
284 .id = 1,
285 .name = "cpmac",
286 .dev = {
287 .dma_mask = &cpmac_dma_mask,
288 .coherent_dma_mask = DMA_BIT_MASK(32),
289 .platform_data = &cpmac_high_data,
290 },
291 .resource = cpmac_high_res,
292 .num_resources = ARRAY_SIZE(cpmac_high_res),
293 };
294
295 static inline unsigned char char2hex(char h)
296 {
297 switch (h) {
298 case '0': case '1': case '2': case '3': case '4':
299 case '5': case '6': case '7': case '8': case '9':
300 return h - '0';
301 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
302 return h - 'A' + 10;
303 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
304 return h - 'a' + 10;
305 default:
306 return 0;
307 }
308 }
309
310 static void cpmac_get_mac(int instance, unsigned char *dev_addr)
311 {
312 int i;
313 char name[5], default_mac[ETH_ALEN], *mac;
314
315 mac = NULL;
316 sprintf(name, "mac%c", 'a' + instance);
317 mac = prom_getenv(name);
318 if (!mac) {
319 sprintf(name, "mac%c", 'a');
320 mac = prom_getenv(name);
321 }
322 if (!mac) {
323 random_ether_addr(default_mac);
324 mac = default_mac;
325 }
326 for (i = 0; i < 6; i++)
327 dev_addr[i] = (char2hex(mac[i * 3]) << 4) +
328 char2hex(mac[i * 3 + 1]);
329 }
330
331 /*****************************************************************************
332 * USB
333 ****************************************************************************/
334 static struct resource usb_res[] = {
335 {
336 .name = "regs",
337 .flags = IORESOURCE_MEM,
338 .start = AR7_REGS_USB,
339 .end = AR7_REGS_USB + 0xff,
340 },
341 {
342 .name = "irq",
343 .flags = IORESOURCE_IRQ,
344 .start = 32,
345 .end = 32,
346 },
347 {
348 .name = "mem",
349 .flags = IORESOURCE_MEM,
350 .start = 0x03400000,
351 .end = 0x03401fff,
352 },
353 };
354
355 static struct platform_device ar7_udc = {
356 .name = "ar7_udc",
357 .resource = usb_res,
358 .num_resources = ARRAY_SIZE(usb_res),
359 };
360
361 /*****************************************************************************
362 * LEDs
363 ****************************************************************************/
364 static struct gpio_led default_leds[] = {
365 {
366 .name = "status",
367 .gpio = 8,
368 .active_low = 1,
369 },
370 };
371
372 static struct gpio_led dsl502t_leds[] = {
373 {
374 .name = "status",
375 .gpio = 9,
376 .active_low = 1,
377 },
378 {
379 .name = "ethernet",
380 .gpio = 7,
381 .active_low = 1,
382 },
383 {
384 .name = "usb",
385 .gpio = 12,
386 .active_low = 1,
387 },
388 };
389
390 static struct gpio_led dg834g_leds[] = {
391 {
392 .name = "ppp",
393 .gpio = 6,
394 .active_low = 1,
395 },
396 {
397 .name = "status",
398 .gpio = 7,
399 .active_low = 1,
400 },
401 {
402 .name = "adsl",
403 .gpio = 8,
404 .active_low = 1,
405 },
406 {
407 .name = "wifi",
408 .gpio = 12,
409 .active_low = 1,
410 },
411 {
412 .name = "power",
413 .gpio = 14,
414 .active_low = 1,
415 .default_trigger = "default-on",
416 },
417 };
418
419 static struct gpio_led fb_sl_leds[] = {
420 {
421 .name = "1",
422 .gpio = 7,
423 },
424 {
425 .name = "2",
426 .gpio = 13,
427 .active_low = 1,
428 },
429 {
430 .name = "3",
431 .gpio = 10,
432 .active_low = 1,
433 },
434 {
435 .name = "4",
436 .gpio = 12,
437 .active_low = 1,
438 },
439 {
440 .name = "5",
441 .gpio = 9,
442 .active_low = 1,
443 },
444 };
445
446 static struct gpio_led fb_fon_leds[] = {
447 {
448 .name = "1",
449 .gpio = 8,
450 },
451 {
452 .name = "2",
453 .gpio = 3,
454 .active_low = 1,
455 },
456 {
457 .name = "3",
458 .gpio = 5,
459 },
460 {
461 .name = "4",
462 .gpio = 4,
463 .active_low = 1,
464 },
465 {
466 .name = "5",
467 .gpio = 11,
468 .active_low = 1,
469 },
470 };
471
472 static struct gpio_led_platform_data ar7_led_data;
473
474 static struct platform_device ar7_gpio_leds = {
475 .name = "leds-gpio",
476 .dev = {
477 .platform_data = &ar7_led_data,
478 }
479 };
480
481 static void __init detect_leds(void)
482 {
483 char *prid, *usb_prod;
484
485 /* Default LEDs */
486 ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
487 ar7_led_data.leds = default_leds;
488
489 /* FIXME: the whole thing is unreliable */
490 prid = prom_getenv("ProductID");
491 usb_prod = prom_getenv("usb_prod");
492
493 /* If we can't get the product id from PROM, use the default LEDs */
494 if (!prid)
495 return;
496
497 if (strstr(prid, "Fritz_Box_FON")) {
498 ar7_led_data.num_leds = ARRAY_SIZE(fb_fon_leds);
499 ar7_led_data.leds = fb_fon_leds;
500 } else if (strstr(prid, "Fritz_Box_")) {
501 ar7_led_data.num_leds = ARRAY_SIZE(fb_sl_leds);
502 ar7_led_data.leds = fb_sl_leds;
503 } else if ((!strcmp(prid, "AR7RD") || !strcmp(prid, "AR7DB"))
504 && usb_prod != NULL && strstr(usb_prod, "DSL-502T")) {
505 ar7_led_data.num_leds = ARRAY_SIZE(dsl502t_leds);
506 ar7_led_data.leds = dsl502t_leds;
507 } else if (strstr(prid, "DG834")) {
508 ar7_led_data.num_leds = ARRAY_SIZE(dg834g_leds);
509 ar7_led_data.leds = dg834g_leds;
510 }
511 }
512
513 /*****************************************************************************
514 * Watchdog
515 ****************************************************************************/
516 static struct resource ar7_wdt_res = {
517 .name = "regs",
518 .flags = IORESOURCE_MEM,
519 .start = -1, /* Filled at runtime */
520 .end = -1, /* Filled at runtime */
521 };
522
523 static struct platform_device ar7_wdt = {
524 .name = "ar7_wdt",
525 .resource = &ar7_wdt_res,
526 .num_resources = 1,
527 };
528
529 /*****************************************************************************
530 * Init
531 ****************************************************************************/
532 static int __init ar7_register_uarts(void)
533 {
534 #ifdef CONFIG_SERIAL_8250
535 static struct uart_port uart_port __initdata;
536 struct clk *bus_clk;
537 int res;
538
539 memset(&uart_port, 0, sizeof(struct uart_port));
540
541 bus_clk = clk_get(NULL, "bus");
542 if (IS_ERR(bus_clk))
543 panic("unable to get bus clk\n");
544
545 uart_port.type = PORT_16550A;
546 uart_port.uartclk = clk_get_rate(bus_clk) / 2;
547 uart_port.iotype = UPIO_MEM32;
548 uart_port.regshift = 2;
549
550 uart_port.line = 0;
551 uart_port.irq = AR7_IRQ_UART0;
552 uart_port.mapbase = AR7_REGS_UART0;
553 uart_port.membase = ioremap(uart_port.mapbase, 256);
554
555 res = early_serial_setup(&uart_port);
556 if (res)
557 return res;
558
559 /* Only TNETD73xx have a second serial port */
560 if (ar7_has_second_uart()) {
561 uart_port.line = 1;
562 uart_port.irq = AR7_IRQ_UART1;
563 uart_port.mapbase = UR8_REGS_UART1;
564 uart_port.membase = ioremap(uart_port.mapbase, 256);
565
566 res = early_serial_setup(&uart_port);
567 if (res)
568 return res;
569 }
570 #endif
571
572 return 0;
573 }
574
575 static int __init ar7_register_devices(void)
576 {
577 void __iomem *bootcr;
578 u32 val;
579 int res;
580
581 res = ar7_register_uarts();
582 if (res)
583 pr_err("unable to setup uart(s): %d\n", res);
584
585 res = platform_device_register(&physmap_flash);
586 if (res)
587 pr_warning("unable to register physmap-flash: %d\n", res);
588
589 ar7_device_disable(vlynq_low_data.reset_bit);
590 res = platform_device_register(&vlynq_low);
591 if (res)
592 pr_warning("unable to register vlynq-low: %d\n", res);
593
594 if (ar7_has_high_vlynq()) {
595 ar7_device_disable(vlynq_high_data.reset_bit);
596 res = platform_device_register(&vlynq_high);
597 if (res)
598 pr_warning("unable to register vlynq-high: %d\n", res);
599 }
600
601 if (ar7_has_high_cpmac()) {
602 res = fixed_phy_add(PHY_POLL, cpmac_high.id, &fixed_phy_status);
603 if (!res) {
604 cpmac_get_mac(1, cpmac_high_data.dev_addr);
605
606 res = platform_device_register(&cpmac_high);
607 if (res)
608 pr_warning("unable to register cpmac-high: %d\n", res);
609 } else
610 pr_warning("unable to add cpmac-high phy: %d\n", res);
611 } else
612 cpmac_low_data.phy_mask = 0xffffffff;
613
614 res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status);
615 if (!res) {
616 cpmac_get_mac(0, cpmac_low_data.dev_addr);
617 res = platform_device_register(&cpmac_low);
618 if (res)
619 pr_warning("unable to register cpmac-low: %d\n", res);
620 } else
621 pr_warning("unable to add cpmac-low phy: %d\n", res);
622
623 detect_leds();
624 res = platform_device_register(&ar7_gpio_leds);
625 if (res)
626 pr_warning("unable to register leds: %d\n", res);
627
628 res = platform_device_register(&ar7_udc);
629 if (res)
630 pr_warning("unable to register usb slave: %d\n", res);
631
632 /* Register watchdog only if enabled in hardware */
633 bootcr = ioremap_nocache(AR7_REGS_DCL, 4);
634 val = readl(bootcr);
635 iounmap(bootcr);
636 if (val & AR7_WDT_HW_ENA) {
637 if (ar7_has_high_vlynq())
638 ar7_wdt_res.start = UR8_REGS_WDT;
639 else
640 ar7_wdt_res.start = AR7_REGS_WDT;
641
642 ar7_wdt_res.end = ar7_wdt_res.start + 0x20;
643 res = platform_device_register(&ar7_wdt);
644 if (res)
645 pr_warning("unable to register watchdog: %d\n", res);
646 }
647
648 return 0;
649 }
650 device_initcall(ar7_register_devices);
Linux with added FPC-III support