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Merge tag 'disintegrate-x86-20121214' of git://git.infradead.org/users/dhowells/linux...
[deliverable/linux.git] / arch / mips / ar7 / platform.c
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 const char *ar7_probe_types[] = { "ar7part", NULL };
206
207 static struct physmap_flash_data physmap_flash_data = {
208 .width = 2,
209 .part_probe_types = ar7_probe_types,
210 };
211
212 static struct platform_device physmap_flash = {
213 .name = "physmap-flash",
214 .dev = {
215 .platform_data = &physmap_flash_data,
216 },
217 .resource = &physmap_flash_resource,
218 .num_resources = 1,
219 };
220
221 /*****************************************************************************
222 * Ethernet
223 ****************************************************************************/
224 static struct resource cpmac_low_res[] = {
225 {
226 .name = "regs",
227 .flags = IORESOURCE_MEM,
228 .start = AR7_REGS_MAC0,
229 .end = AR7_REGS_MAC0 + 0x7ff,
230 },
231 {
232 .name = "irq",
233 .flags = IORESOURCE_IRQ,
234 .start = 27,
235 .end = 27,
236 },
237 };
238
239 static struct resource cpmac_high_res[] = {
240 {
241 .name = "regs",
242 .flags = IORESOURCE_MEM,
243 .start = AR7_REGS_MAC1,
244 .end = AR7_REGS_MAC1 + 0x7ff,
245 },
246 {
247 .name = "irq",
248 .flags = IORESOURCE_IRQ,
249 .start = 41,
250 .end = 41,
251 },
252 };
253
254 static struct fixed_phy_status fixed_phy_status __initdata = {
255 .link = 1,
256 .speed = 100,
257 .duplex = 1,
258 };
259
260 static struct plat_cpmac_data cpmac_low_data = {
261 .reset_bit = 17,
262 .power_bit = 20,
263 .phy_mask = 0x80000000,
264 };
265
266 static struct plat_cpmac_data cpmac_high_data = {
267 .reset_bit = 21,
268 .power_bit = 22,
269 .phy_mask = 0x7fffffff,
270 };
271
272 static u64 cpmac_dma_mask = DMA_BIT_MASK(32);
273
274 static struct platform_device cpmac_low = {
275 .id = 0,
276 .name = "cpmac",
277 .dev = {
278 .dma_mask = &cpmac_dma_mask,
279 .coherent_dma_mask = DMA_BIT_MASK(32),
280 .platform_data = &cpmac_low_data,
281 },
282 .resource = cpmac_low_res,
283 .num_resources = ARRAY_SIZE(cpmac_low_res),
284 };
285
286 static struct platform_device cpmac_high = {
287 .id = 1,
288 .name = "cpmac",
289 .dev = {
290 .dma_mask = &cpmac_dma_mask,
291 .coherent_dma_mask = DMA_BIT_MASK(32),
292 .platform_data = &cpmac_high_data,
293 },
294 .resource = cpmac_high_res,
295 .num_resources = ARRAY_SIZE(cpmac_high_res),
296 };
297
298 static void __init cpmac_get_mac(int instance, unsigned char *dev_addr)
299 {
300 char name[5], *mac;
301
302 sprintf(name, "mac%c", 'a' + instance);
303 mac = prom_getenv(name);
304 if (!mac && instance) {
305 sprintf(name, "mac%c", 'a');
306 mac = prom_getenv(name);
307 }
308
309 if (mac) {
310 if (sscanf(mac, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
311 &dev_addr[0], &dev_addr[1],
312 &dev_addr[2], &dev_addr[3],
313 &dev_addr[4], &dev_addr[5]) != 6) {
314 pr_warning("cannot parse mac address, "
315 "using random address\n");
316 eth_random_addr(dev_addr);
317 }
318 } else
319 eth_random_addr(dev_addr);
320 }
321
322 /*****************************************************************************
323 * USB
324 ****************************************************************************/
325 static struct resource usb_res[] = {
326 {
327 .name = "regs",
328 .flags = IORESOURCE_MEM,
329 .start = AR7_REGS_USB,
330 .end = AR7_REGS_USB + 0xff,
331 },
332 {
333 .name = "irq",
334 .flags = IORESOURCE_IRQ,
335 .start = 32,
336 .end = 32,
337 },
338 {
339 .name = "mem",
340 .flags = IORESOURCE_MEM,
341 .start = 0x03400000,
342 .end = 0x03401fff,
343 },
344 };
345
346 static struct platform_device ar7_udc = {
347 .name = "ar7_udc",
348 .resource = usb_res,
349 .num_resources = ARRAY_SIZE(usb_res),
350 };
351
352 /*****************************************************************************
353 * LEDs
354 ****************************************************************************/
355 static struct gpio_led default_leds[] = {
356 {
357 .name = "status",
358 .gpio = 8,
359 .active_low = 1,
360 },
361 };
362
363 static struct gpio_led titan_leds[] = {
364 { .name = "status", .gpio = 8, .active_low = 1, },
365 { .name = "wifi", .gpio = 13, .active_low = 1, },
366 };
367
368 static struct gpio_led dsl502t_leds[] = {
369 {
370 .name = "status",
371 .gpio = 9,
372 .active_low = 1,
373 },
374 {
375 .name = "ethernet",
376 .gpio = 7,
377 .active_low = 1,
378 },
379 {
380 .name = "usb",
381 .gpio = 12,
382 .active_low = 1,
383 },
384 };
385
386 static struct gpio_led dg834g_leds[] = {
387 {
388 .name = "ppp",
389 .gpio = 6,
390 .active_low = 1,
391 },
392 {
393 .name = "status",
394 .gpio = 7,
395 .active_low = 1,
396 },
397 {
398 .name = "adsl",
399 .gpio = 8,
400 .active_low = 1,
401 },
402 {
403 .name = "wifi",
404 .gpio = 12,
405 .active_low = 1,
406 },
407 {
408 .name = "power",
409 .gpio = 14,
410 .active_low = 1,
411 .default_trigger = "default-on",
412 },
413 };
414
415 static struct gpio_led fb_sl_leds[] = {
416 {
417 .name = "1",
418 .gpio = 7,
419 },
420 {
421 .name = "2",
422 .gpio = 13,
423 .active_low = 1,
424 },
425 {
426 .name = "3",
427 .gpio = 10,
428 .active_low = 1,
429 },
430 {
431 .name = "4",
432 .gpio = 12,
433 .active_low = 1,
434 },
435 {
436 .name = "5",
437 .gpio = 9,
438 .active_low = 1,
439 },
440 };
441
442 static struct gpio_led fb_fon_leds[] = {
443 {
444 .name = "1",
445 .gpio = 8,
446 },
447 {
448 .name = "2",
449 .gpio = 3,
450 .active_low = 1,
451 },
452 {
453 .name = "3",
454 .gpio = 5,
455 },
456 {
457 .name = "4",
458 .gpio = 4,
459 .active_low = 1,
460 },
461 {
462 .name = "5",
463 .gpio = 11,
464 .active_low = 1,
465 },
466 };
467
468 static struct gpio_led gt701_leds[] = {
469 {
470 .name = "inet:green",
471 .gpio = 13,
472 .active_low = 1,
473 },
474 {
475 .name = "usb",
476 .gpio = 12,
477 .active_low = 1,
478 },
479 {
480 .name = "inet:red",
481 .gpio = 9,
482 .active_low = 1,
483 },
484 {
485 .name = "power:red",
486 .gpio = 7,
487 .active_low = 1,
488 },
489 {
490 .name = "power:green",
491 .gpio = 8,
492 .active_low = 1,
493 .default_trigger = "default-on",
494 },
495 {
496 .name = "ethernet",
497 .gpio = 10,
498 .active_low = 1,
499 },
500 };
501
502 static struct gpio_led_platform_data ar7_led_data;
503
504 static struct platform_device ar7_gpio_leds = {
505 .name = "leds-gpio",
506 .dev = {
507 .platform_data = &ar7_led_data,
508 }
509 };
510
511 static void __init detect_leds(void)
512 {
513 char *prid, *usb_prod;
514
515 /* Default LEDs */
516 ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
517 ar7_led_data.leds = default_leds;
518
519 /* FIXME: the whole thing is unreliable */
520 prid = prom_getenv("ProductID");
521 usb_prod = prom_getenv("usb_prod");
522
523 /* If we can't get the product id from PROM, use the default LEDs */
524 if (!prid)
525 return;
526
527 if (strstr(prid, "Fritz_Box_FON")) {
528 ar7_led_data.num_leds = ARRAY_SIZE(fb_fon_leds);
529 ar7_led_data.leds = fb_fon_leds;
530 } else if (strstr(prid, "Fritz_Box_")) {
531 ar7_led_data.num_leds = ARRAY_SIZE(fb_sl_leds);
532 ar7_led_data.leds = fb_sl_leds;
533 } else if ((!strcmp(prid, "AR7RD") || !strcmp(prid, "AR7DB"))
534 && usb_prod != NULL && strstr(usb_prod, "DSL-502T")) {
535 ar7_led_data.num_leds = ARRAY_SIZE(dsl502t_leds);
536 ar7_led_data.leds = dsl502t_leds;
537 } else if (strstr(prid, "DG834")) {
538 ar7_led_data.num_leds = ARRAY_SIZE(dg834g_leds);
539 ar7_led_data.leds = dg834g_leds;
540 } else if (strstr(prid, "CYWM") || strstr(prid, "CYWL")) {
541 ar7_led_data.num_leds = ARRAY_SIZE(titan_leds);
542 ar7_led_data.leds = titan_leds;
543 } else if (strstr(prid, "GT701")) {
544 ar7_led_data.num_leds = ARRAY_SIZE(gt701_leds);
545 ar7_led_data.leds = gt701_leds;
546 }
547 }
548
549 /*****************************************************************************
550 * Watchdog
551 ****************************************************************************/
552 static struct resource ar7_wdt_res = {
553 .name = "regs",
554 .flags = IORESOURCE_MEM,
555 .start = -1, /* Filled at runtime */
556 .end = -1, /* Filled at runtime */
557 };
558
559 static struct platform_device ar7_wdt = {
560 .name = "ar7_wdt",
561 .resource = &ar7_wdt_res,
562 .num_resources = 1,
563 };
564
565 /*****************************************************************************
566 * Init
567 ****************************************************************************/
568 static int __init ar7_register_uarts(void)
569 {
570 #ifdef CONFIG_SERIAL_8250
571 static struct uart_port uart_port __initdata;
572 struct clk *bus_clk;
573 int res;
574
575 memset(&uart_port, 0, sizeof(struct uart_port));
576
577 bus_clk = clk_get(NULL, "bus");
578 if (IS_ERR(bus_clk))
579 panic("unable to get bus clk");
580
581 uart_port.type = PORT_AR7;
582 uart_port.uartclk = clk_get_rate(bus_clk) / 2;
583 uart_port.iotype = UPIO_MEM32;
584 uart_port.regshift = 2;
585
586 uart_port.line = 0;
587 uart_port.irq = AR7_IRQ_UART0;
588 uart_port.mapbase = AR7_REGS_UART0;
589 uart_port.membase = ioremap(uart_port.mapbase, 256);
590
591 res = early_serial_setup(&uart_port);
592 if (res)
593 return res;
594
595 /* Only TNETD73xx have a second serial port */
596 if (ar7_has_second_uart()) {
597 uart_port.line = 1;
598 uart_port.irq = AR7_IRQ_UART1;
599 uart_port.mapbase = UR8_REGS_UART1;
600 uart_port.membase = ioremap(uart_port.mapbase, 256);
601
602 res = early_serial_setup(&uart_port);
603 if (res)
604 return res;
605 }
606 #endif
607
608 return 0;
609 }
610
611 static void __init titan_fixup_devices(void)
612 {
613 /* Set vlynq0 data */
614 vlynq_low_data.reset_bit = 15;
615 vlynq_low_data.gpio_bit = 14;
616
617 /* Set vlynq1 data */
618 vlynq_high_data.reset_bit = 16;
619 vlynq_high_data.gpio_bit = 7;
620
621 /* Set vlynq0 resources */
622 vlynq_low_res[0].start = TITAN_REGS_VLYNQ0;
623 vlynq_low_res[0].end = TITAN_REGS_VLYNQ0 + 0xff;
624 vlynq_low_res[1].start = 33;
625 vlynq_low_res[1].end = 33;
626 vlynq_low_res[2].start = 0x0c000000;
627 vlynq_low_res[2].end = 0x0fffffff;
628 vlynq_low_res[3].start = 80;
629 vlynq_low_res[3].end = 111;
630
631 /* Set vlynq1 resources */
632 vlynq_high_res[0].start = TITAN_REGS_VLYNQ1;
633 vlynq_high_res[0].end = TITAN_REGS_VLYNQ1 + 0xff;
634 vlynq_high_res[1].start = 34;
635 vlynq_high_res[1].end = 34;
636 vlynq_high_res[2].start = 0x40000000;
637 vlynq_high_res[2].end = 0x43ffffff;
638 vlynq_high_res[3].start = 112;
639 vlynq_high_res[3].end = 143;
640
641 /* Set cpmac0 data */
642 cpmac_low_data.phy_mask = 0x40000000;
643
644 /* Set cpmac1 data */
645 cpmac_high_data.phy_mask = 0x80000000;
646
647 /* Set cpmac0 resources */
648 cpmac_low_res[0].start = TITAN_REGS_MAC0;
649 cpmac_low_res[0].end = TITAN_REGS_MAC0 + 0x7ff;
650
651 /* Set cpmac1 resources */
652 cpmac_high_res[0].start = TITAN_REGS_MAC1;
653 cpmac_high_res[0].end = TITAN_REGS_MAC1 + 0x7ff;
654 }
655
656 static int __init ar7_register_devices(void)
657 {
658 void __iomem *bootcr;
659 u32 val;
660 int res;
661
662 res = ar7_register_uarts();
663 if (res)
664 pr_err("unable to setup uart(s): %d\n", res);
665
666 res = platform_device_register(&physmap_flash);
667 if (res)
668 pr_warning("unable to register physmap-flash: %d\n", res);
669
670 if (ar7_is_titan())
671 titan_fixup_devices();
672
673 ar7_device_disable(vlynq_low_data.reset_bit);
674 res = platform_device_register(&vlynq_low);
675 if (res)
676 pr_warning("unable to register vlynq-low: %d\n", res);
677
678 if (ar7_has_high_vlynq()) {
679 ar7_device_disable(vlynq_high_data.reset_bit);
680 res = platform_device_register(&vlynq_high);
681 if (res)
682 pr_warning("unable to register vlynq-high: %d\n", res);
683 }
684
685 if (ar7_has_high_cpmac()) {
686 res = fixed_phy_add(PHY_POLL, cpmac_high.id, &fixed_phy_status);
687 if (!res) {
688 cpmac_get_mac(1, cpmac_high_data.dev_addr);
689
690 res = platform_device_register(&cpmac_high);
691 if (res)
692 pr_warning("unable to register cpmac-high: %d\n", res);
693 } else
694 pr_warning("unable to add cpmac-high phy: %d\n", res);
695 } else
696 cpmac_low_data.phy_mask = 0xffffffff;
697
698 res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status);
699 if (!res) {
700 cpmac_get_mac(0, cpmac_low_data.dev_addr);
701 res = platform_device_register(&cpmac_low);
702 if (res)
703 pr_warning("unable to register cpmac-low: %d\n", res);
704 } else
705 pr_warning("unable to add cpmac-low phy: %d\n", res);
706
707 detect_leds();
708 res = platform_device_register(&ar7_gpio_leds);
709 if (res)
710 pr_warning("unable to register leds: %d\n", res);
711
712 res = platform_device_register(&ar7_udc);
713 if (res)
714 pr_warning("unable to register usb slave: %d\n", res);
715
716 /* Register watchdog only if enabled in hardware */
717 bootcr = ioremap_nocache(AR7_REGS_DCL, 4);
718 val = readl(bootcr);
719 iounmap(bootcr);
720 if (val & AR7_WDT_HW_ENA) {
721 if (ar7_has_high_vlynq())
722 ar7_wdt_res.start = UR8_REGS_WDT;
723 else
724 ar7_wdt_res.start = AR7_REGS_WDT;
725
726 ar7_wdt_res.end = ar7_wdt_res.start + 0x20;
727 res = platform_device_register(&ar7_wdt);
728 if (res)
729 pr_warning("unable to register watchdog: %d\n", res);
730 }
731
732 return 0;
733 }
734 device_initcall(ar7_register_devices);
Linux kernel - Deliverables
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