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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (C) 2006,2007 Felix Fietkau <nbd@openwrt.org>
4 * Copyright (C) 2006,2007 Eugene Konev <ejka@openwrt.org>
5 */
6
7#include <linux/init.h>
8#include <linux/types.h>
9#include <linux/delay.h>
10#include <linux/dma-mapping.h>
11#include <linux/platform_device.h>
12#include <linux/mtd/physmap.h>
13#include <linux/serial.h>
14#include <linux/serial_8250.h>
15#include <linux/ioport.h>
16#include <linux/io.h>
17#include <linux/vlynq.h>
18#include <linux/leds.h>
19#include <linux/string.h>
20#include <linux/etherdevice.h>
21#include <linux/phy.h>
22#include <linux/phy_fixed.h>
23#include <linux/gpio.h>
24#include <linux/clk.h>
25
26#include <asm/addrspace.h>
27#include <asm/mach-ar7/ar7.h>
28#include <asm/mach-ar7/prom.h>
29
30/*****************************************************************************
31 * VLYNQ Bus
32 ****************************************************************************/
33struct plat_vlynq_data {
34 struct plat_vlynq_ops ops;
35 int gpio_bit;
36 int reset_bit;
37};
38
39static int vlynq_on(struct vlynq_device *dev)
40{
41 int ret;
42 struct plat_vlynq_data *pdata = dev->dev.platform_data;
43
44 ret = gpio_request(pdata->gpio_bit, "vlynq");
45 if (ret)
46 goto out;
47
48 ar7_device_reset(pdata->reset_bit);
49
50 ret = ar7_gpio_disable(pdata->gpio_bit);
51 if (ret)
52 goto out_enabled;
53
54 ret = ar7_gpio_enable(pdata->gpio_bit);
55 if (ret)
56 goto out_enabled;
57
58 ret = gpio_direction_output(pdata->gpio_bit, 0);
59 if (ret)
60 goto out_gpio_enabled;
61
62 msleep(50);
63
64 gpio_set_value(pdata->gpio_bit, 1);
65
66 msleep(50);
67
68 return 0;
69
70out_gpio_enabled:
71 ar7_gpio_disable(pdata->gpio_bit);
72out_enabled:
73 ar7_device_disable(pdata->reset_bit);
74 gpio_free(pdata->gpio_bit);
75out:
76 return ret;
77}
78
79static void vlynq_off(struct vlynq_device *dev)
80{
81 struct plat_vlynq_data *pdata = dev->dev.platform_data;
82
83 ar7_gpio_disable(pdata->gpio_bit);
84 gpio_free(pdata->gpio_bit);
85 ar7_device_disable(pdata->reset_bit);
86}
87
88static struct resource vlynq_low_res[] = {
89 {
90 .name = "regs",
91 .flags = IORESOURCE_MEM,
92 .start = AR7_REGS_VLYNQ0,
93 .end = AR7_REGS_VLYNQ0 + 0xff,
94 },
95 {
96 .name = "irq",
97 .flags = IORESOURCE_IRQ,
98 .start = 29,
99 .end = 29,
100 },
101 {
102 .name = "mem",
103 .flags = IORESOURCE_MEM,
104 .start = 0x04000000,
105 .end = 0x04ffffff,
106 },
107 {
108 .name = "devirq",
109 .flags = IORESOURCE_IRQ,
110 .start = 80,
111 .end = 111,
112 },
113};
114
115static struct resource vlynq_high_res[] = {
116 {
117 .name = "regs",
118 .flags = IORESOURCE_MEM,
119 .start = AR7_REGS_VLYNQ1,
120 .end = AR7_REGS_VLYNQ1 + 0xff,
121 },
122 {
123 .name = "irq",
124 .flags = IORESOURCE_IRQ,
125 .start = 33,
126 .end = 33,
127 },
128 {
129 .name = "mem",
130 .flags = IORESOURCE_MEM,
131 .start = 0x0c000000,
132 .end = 0x0cffffff,
133 },
134 {
135 .name = "devirq",
136 .flags = IORESOURCE_IRQ,
137 .start = 112,
138 .end = 143,
139 },
140};
141
142static struct plat_vlynq_data vlynq_low_data = {
143 .ops = {
144 .on = vlynq_on,
145 .off = vlynq_off,
146 },
147 .reset_bit = 20,
148 .gpio_bit = 18,
149};
150
151static struct plat_vlynq_data vlynq_high_data = {
152 .ops = {
153 .on = vlynq_on,
154 .off = vlynq_off,
155 },
156 .reset_bit = 16,
157 .gpio_bit = 19,
158};
159
160static struct platform_device vlynq_low = {
161 .id = 0,
162 .name = "vlynq",
163 .dev = {
164 .platform_data = &vlynq_low_data,
165 },
166 .resource = vlynq_low_res,
167 .num_resources = ARRAY_SIZE(vlynq_low_res),
168};
169
170static struct platform_device vlynq_high = {
171 .id = 1,
172 .name = "vlynq",
173 .dev = {
174 .platform_data = &vlynq_high_data,
175 },
176 .resource = vlynq_high_res,
177 .num_resources = ARRAY_SIZE(vlynq_high_res),
178};
179
180/*****************************************************************************
181 * Flash
182 ****************************************************************************/
183static struct resource physmap_flash_resource = {
184 .name = "mem",
185 .flags = IORESOURCE_MEM,
186 .start = 0x10000000,
187 .end = 0x107fffff,
188};
189
190static const char *ar7_probe_types[] = { "ar7part", NULL };
191
192static struct physmap_flash_data physmap_flash_data = {
193 .width = 2,
194 .part_probe_types = ar7_probe_types,
195};
196
197static struct platform_device physmap_flash = {
198 .name = "physmap-flash",
199 .dev = {
200 .platform_data = &physmap_flash_data,
201 },
202 .resource = &physmap_flash_resource,
203 .num_resources = 1,
204};
205
206/*****************************************************************************
207 * Ethernet
208 ****************************************************************************/
209static struct resource cpmac_low_res[] = {
210 {
211 .name = "regs",
212 .flags = IORESOURCE_MEM,
213 .start = AR7_REGS_MAC0,
214 .end = AR7_REGS_MAC0 + 0x7ff,
215 },
216 {
217 .name = "irq",
218 .flags = IORESOURCE_IRQ,
219 .start = 27,
220 .end = 27,
221 },
222};
223
224static struct resource cpmac_high_res[] = {
225 {
226 .name = "regs",
227 .flags = IORESOURCE_MEM,
228 .start = AR7_REGS_MAC1,
229 .end = AR7_REGS_MAC1 + 0x7ff,
230 },
231 {
232 .name = "irq",
233 .flags = IORESOURCE_IRQ,
234 .start = 41,
235 .end = 41,
236 },
237};
238
239static struct fixed_phy_status fixed_phy_status __initdata = {
240 .link = 1,
241 .speed = 100,
242 .duplex = 1,
243};
244
245static struct plat_cpmac_data cpmac_low_data = {
246 .reset_bit = 17,
247 .power_bit = 20,
248 .phy_mask = 0x80000000,
249};
250
251static struct plat_cpmac_data cpmac_high_data = {
252 .reset_bit = 21,
253 .power_bit = 22,
254 .phy_mask = 0x7fffffff,
255};
256
257static u64 cpmac_dma_mask = DMA_BIT_MASK(32);
258
259static struct platform_device cpmac_low = {
260 .id = 0,
261 .name = "cpmac",
262 .dev = {
263 .dma_mask = &cpmac_dma_mask,
264 .coherent_dma_mask = DMA_BIT_MASK(32),
265 .platform_data = &cpmac_low_data,
266 },
267 .resource = cpmac_low_res,
268 .num_resources = ARRAY_SIZE(cpmac_low_res),
269};
270
271static struct platform_device cpmac_high = {
272 .id = 1,
273 .name = "cpmac",
274 .dev = {
275 .dma_mask = &cpmac_dma_mask,
276 .coherent_dma_mask = DMA_BIT_MASK(32),
277 .platform_data = &cpmac_high_data,
278 },
279 .resource = cpmac_high_res,
280 .num_resources = ARRAY_SIZE(cpmac_high_res),
281};
282
283static void __init cpmac_get_mac(int instance, unsigned char *dev_addr)
284{
285 char name[5], *mac;
286
287 sprintf(name, "mac%c", 'a' + instance);
288 mac = prom_getenv(name);
289 if (!mac && instance) {
290 sprintf(name, "mac%c", 'a');
291 mac = prom_getenv(name);
292 }
293
294 if (mac) {
295 if (!mac_pton(mac, dev_addr)) {
296 pr_warn("cannot parse mac address, using random address\n");
297 eth_random_addr(dev_addr);
298 }
299 } else
300 eth_random_addr(dev_addr);
301}
302
303/*****************************************************************************
304 * USB
305 ****************************************************************************/
306static struct resource usb_res[] = {
307 {
308 .name = "regs",
309 .flags = IORESOURCE_MEM,
310 .start = AR7_REGS_USB,
311 .end = AR7_REGS_USB + 0xff,
312 },
313 {
314 .name = "irq",
315 .flags = IORESOURCE_IRQ,
316 .start = 32,
317 .end = 32,
318 },
319 {
320 .name = "mem",
321 .flags = IORESOURCE_MEM,
322 .start = 0x03400000,
323 .end = 0x03401fff,
324 },
325};
326
327static struct platform_device ar7_udc = {
328 .name = "ar7_udc",
329 .resource = usb_res,
330 .num_resources = ARRAY_SIZE(usb_res),
331};
332
333/*****************************************************************************
334 * LEDs
335 ****************************************************************************/
336static const struct gpio_led default_leds[] = {
337 {
338 .name = "status",
339 .gpio = 8,
340 .active_low = 1,
341 },
342};
343
344static const struct gpio_led titan_leds[] = {
345 { .name = "status", .gpio = 8, .active_low = 1, },
346 { .name = "wifi", .gpio = 13, .active_low = 1, },
347};
348
349static const struct gpio_led dsl502t_leds[] = {
350 {
351 .name = "status",
352 .gpio = 9,
353 .active_low = 1,
354 },
355 {
356 .name = "ethernet",
357 .gpio = 7,
358 .active_low = 1,
359 },
360 {
361 .name = "usb",
362 .gpio = 12,
363 .active_low = 1,
364 },
365};
366
367static const struct gpio_led dg834g_leds[] = {
368 {
369 .name = "ppp",
370 .gpio = 6,
371 .active_low = 1,
372 },
373 {
374 .name = "status",
375 .gpio = 7,
376 .active_low = 1,
377 },
378 {
379 .name = "adsl",
380 .gpio = 8,
381 .active_low = 1,
382 },
383 {
384 .name = "wifi",
385 .gpio = 12,
386 .active_low = 1,
387 },
388 {
389 .name = "power",
390 .gpio = 14,
391 .active_low = 1,
392 .default_trigger = "default-on",
393 },
394};
395
396static const struct gpio_led fb_sl_leds[] = {
397 {
398 .name = "1",
399 .gpio = 7,
400 },
401 {
402 .name = "2",
403 .gpio = 13,
404 .active_low = 1,
405 },
406 {
407 .name = "3",
408 .gpio = 10,
409 .active_low = 1,
410 },
411 {
412 .name = "4",
413 .gpio = 12,
414 .active_low = 1,
415 },
416 {
417 .name = "5",
418 .gpio = 9,
419 .active_low = 1,
420 },
421};
422
423static const struct gpio_led fb_fon_leds[] = {
424 {
425 .name = "1",
426 .gpio = 8,
427 },
428 {
429 .name = "2",
430 .gpio = 3,
431 .active_low = 1,
432 },
433 {
434 .name = "3",
435 .gpio = 5,
436 },
437 {
438 .name = "4",
439 .gpio = 4,
440 .active_low = 1,
441 },
442 {
443 .name = "5",
444 .gpio = 11,
445 .active_low = 1,
446 },
447};
448
449static const struct gpio_led gt701_leds[] = {
450 {
451 .name = "inet:green",
452 .gpio = 13,
453 .active_low = 1,
454 },
455 {
456 .name = "usb",
457 .gpio = 12,
458 .active_low = 1,
459 },
460 {
461 .name = "inet:red",
462 .gpio = 9,
463 .active_low = 1,
464 },
465 {
466 .name = "power:red",
467 .gpio = 7,
468 .active_low = 1,
469 },
470 {
471 .name = "power:green",
472 .gpio = 8,
473 .active_low = 1,
474 .default_trigger = "default-on",
475 },
476 {
477 .name = "ethernet",
478 .gpio = 10,
479 .active_low = 1,
480 },
481};
482
483static struct gpio_led_platform_data ar7_led_data;
484
485static struct platform_device ar7_gpio_leds = {
486 .name = "leds-gpio",
487 .dev = {
488 .platform_data = &ar7_led_data,
489 }
490};
491
492static void __init detect_leds(void)
493{
494 char *prid, *usb_prod;
495
496 /* Default LEDs */
497 ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
498 ar7_led_data.leds = default_leds;
499
500 /* FIXME: the whole thing is unreliable */
501 prid = prom_getenv("ProductID");
502 usb_prod = prom_getenv("usb_prod");
503
504 /* If we can't get the product id from PROM, use the default LEDs */
505 if (!prid)
506 return;
507
508 if (strstr(prid, "Fritz_Box_FON")) {
509 ar7_led_data.num_leds = ARRAY_SIZE(fb_fon_leds);
510 ar7_led_data.leds = fb_fon_leds;
511 } else if (strstr(prid, "Fritz_Box_")) {
512 ar7_led_data.num_leds = ARRAY_SIZE(fb_sl_leds);
513 ar7_led_data.leds = fb_sl_leds;
514 } else if ((!strcmp(prid, "AR7RD") || !strcmp(prid, "AR7DB"))
515 && usb_prod != NULL && strstr(usb_prod, "DSL-502T")) {
516 ar7_led_data.num_leds = ARRAY_SIZE(dsl502t_leds);
517 ar7_led_data.leds = dsl502t_leds;
518 } else if (strstr(prid, "DG834")) {
519 ar7_led_data.num_leds = ARRAY_SIZE(dg834g_leds);
520 ar7_led_data.leds = dg834g_leds;
521 } else if (strstr(prid, "CYWM") || strstr(prid, "CYWL")) {
522 ar7_led_data.num_leds = ARRAY_SIZE(titan_leds);
523 ar7_led_data.leds = titan_leds;
524 } else if (strstr(prid, "GT701")) {
525 ar7_led_data.num_leds = ARRAY_SIZE(gt701_leds);
526 ar7_led_data.leds = gt701_leds;
527 }
528}
529
530/*****************************************************************************
531 * Watchdog
532 ****************************************************************************/
533static struct resource ar7_wdt_res = {
534 .name = "regs",
535 .flags = IORESOURCE_MEM,
536 .start = -1, /* Filled at runtime */
537 .end = -1, /* Filled at runtime */
538};
539
540static struct platform_device ar7_wdt = {
541 .name = "ar7_wdt",
542 .resource = &ar7_wdt_res,
543 .num_resources = 1,
544};
545
546/*****************************************************************************
547 * Init
548 ****************************************************************************/
549static int __init ar7_register_uarts(void)
550{
551#ifdef CONFIG_SERIAL_8250
552 static struct uart_port uart_port __initdata;
553 struct clk *bus_clk;
554 int res;
555
556 memset(&uart_port, 0, sizeof(struct uart_port));
557
558 bus_clk = clk_get(NULL, "bus");
559 if (IS_ERR(bus_clk))
560 panic("unable to get bus clk");
561
562 uart_port.type = PORT_AR7;
563 uart_port.uartclk = clk_get_rate(bus_clk) / 2;
564 uart_port.iotype = UPIO_MEM32;
565 uart_port.flags = UPF_FIXED_TYPE | UPF_BOOT_AUTOCONF;
566 uart_port.regshift = 2;
567
568 uart_port.line = 0;
569 uart_port.irq = AR7_IRQ_UART0;
570 uart_port.mapbase = AR7_REGS_UART0;
571 uart_port.membase = ioremap(uart_port.mapbase, 256);
572
573 res = early_serial_setup(&uart_port);
574 if (res)
575 return res;
576
577 /* Only TNETD73xx have a second serial port */
578 if (ar7_has_second_uart()) {
579 uart_port.line = 1;
580 uart_port.irq = AR7_IRQ_UART1;
581 uart_port.mapbase = UR8_REGS_UART1;
582 uart_port.membase = ioremap(uart_port.mapbase, 256);
583
584 res = early_serial_setup(&uart_port);
585 if (res)
586 return res;
587 }
588#endif
589
590 return 0;
591}
592
593static void __init titan_fixup_devices(void)
594{
595 /* Set vlynq0 data */
596 vlynq_low_data.reset_bit = 15;
597 vlynq_low_data.gpio_bit = 14;
598
599 /* Set vlynq1 data */
600 vlynq_high_data.reset_bit = 16;
601 vlynq_high_data.gpio_bit = 7;
602
603 /* Set vlynq0 resources */
604 vlynq_low_res[0].start = TITAN_REGS_VLYNQ0;
605 vlynq_low_res[0].end = TITAN_REGS_VLYNQ0 + 0xff;
606 vlynq_low_res[1].start = 33;
607 vlynq_low_res[1].end = 33;
608 vlynq_low_res[2].start = 0x0c000000;
609 vlynq_low_res[2].end = 0x0fffffff;
610 vlynq_low_res[3].start = 80;
611 vlynq_low_res[3].end = 111;
612
613 /* Set vlynq1 resources */
614 vlynq_high_res[0].start = TITAN_REGS_VLYNQ1;
615 vlynq_high_res[0].end = TITAN_REGS_VLYNQ1 + 0xff;
616 vlynq_high_res[1].start = 34;
617 vlynq_high_res[1].end = 34;
618 vlynq_high_res[2].start = 0x40000000;
619 vlynq_high_res[2].end = 0x43ffffff;
620 vlynq_high_res[3].start = 112;
621 vlynq_high_res[3].end = 143;
622
623 /* Set cpmac0 data */
624 cpmac_low_data.phy_mask = 0x40000000;
625
626 /* Set cpmac1 data */
627 cpmac_high_data.phy_mask = 0x80000000;
628
629 /* Set cpmac0 resources */
630 cpmac_low_res[0].start = TITAN_REGS_MAC0;
631 cpmac_low_res[0].end = TITAN_REGS_MAC0 + 0x7ff;
632
633 /* Set cpmac1 resources */
634 cpmac_high_res[0].start = TITAN_REGS_MAC1;
635 cpmac_high_res[0].end = TITAN_REGS_MAC1 + 0x7ff;
636}
637
638static int __init ar7_register_devices(void)
639{
640 void __iomem *bootcr;
641 u32 val;
642 int res;
643
644 res = ar7_gpio_init();
645 if (res)
646 pr_warn("unable to register gpios: %d\n", res);
647
648 res = ar7_register_uarts();
649 if (res)
650 pr_err("unable to setup uart(s): %d\n", res);
651
652 res = platform_device_register(&physmap_flash);
653 if (res)
654 pr_warn("unable to register physmap-flash: %d\n", res);
655
656 if (ar7_is_titan())
657 titan_fixup_devices();
658
659 ar7_device_disable(vlynq_low_data.reset_bit);
660 res = platform_device_register(&vlynq_low);
661 if (res)
662 pr_warn("unable to register vlynq-low: %d\n", res);
663
664 if (ar7_has_high_vlynq()) {
665 ar7_device_disable(vlynq_high_data.reset_bit);
666 res = platform_device_register(&vlynq_high);
667 if (res)
668 pr_warn("unable to register vlynq-high: %d\n", res);
669 }
670
671 if (ar7_has_high_cpmac()) {
672 res = fixed_phy_add(PHY_POLL, cpmac_high.id,
673 &fixed_phy_status);
674 if (!res) {
675 cpmac_get_mac(1, cpmac_high_data.dev_addr);
676
677 res = platform_device_register(&cpmac_high);
678 if (res)
679 pr_warn("unable to register cpmac-high: %d\n",
680 res);
681 } else
682 pr_warn("unable to add cpmac-high phy: %d\n", res);
683 } else
684 cpmac_low_data.phy_mask = 0xffffffff;
685
686 res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status);
687 if (!res) {
688 cpmac_get_mac(0, cpmac_low_data.dev_addr);
689 res = platform_device_register(&cpmac_low);
690 if (res)
691 pr_warn("unable to register cpmac-low: %d\n", res);
692 } else
693 pr_warn("unable to add cpmac-low phy: %d\n", res);
694
695 detect_leds();
696 res = platform_device_register(&ar7_gpio_leds);
697 if (res)
698 pr_warn("unable to register leds: %d\n", res);
699
700 res = platform_device_register(&ar7_udc);
701 if (res)
702 pr_warn("unable to register usb slave: %d\n", res);
703
704 /* Register watchdog only if enabled in hardware */
705 bootcr = ioremap_nocache(AR7_REGS_DCL, 4);
706 val = readl(bootcr);
707 iounmap(bootcr);
708 if (val & AR7_WDT_HW_ENA) {
709 if (ar7_has_high_vlynq())
710 ar7_wdt_res.start = UR8_REGS_WDT;
711 else
712 ar7_wdt_res.start = AR7_REGS_WDT;
713
714 ar7_wdt_res.end = ar7_wdt_res.start + 0x20;
715 res = platform_device_register(&ar7_wdt);
716 if (res)
717 pr_warn("unable to register watchdog: %d\n", res);
718 }
719
720 return 0;
721}
722device_initcall(ar7_register_devices);