GNU Linux-libre 4.19.286-gnu1
[releases.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/delay.h>
23 #include <linux/dma-mapping.h>
24 #include <linux/platform_device.h>
25 #include <linux/mtd/physmap.h>
26 #include <linux/serial.h>
27 #include <linux/serial_8250.h>
28 #include <linux/ioport.h>
29 #include <linux/io.h>
30 #include <linux/vlynq.h>
31 #include <linux/leds.h>
32 #include <linux/string.h>
33 #include <linux/etherdevice.h>
34 #include <linux/phy.h>
35 #include <linux/phy_fixed.h>
36 #include <linux/gpio.h>
37 #include <linux/clk.h>
38
39 #include <asm/addrspace.h>
40 #include <asm/mach-ar7/ar7.h>
41 #include <asm/mach-ar7/prom.h>
42
43 /*****************************************************************************
44  * VLYNQ Bus
45  ****************************************************************************/
46 struct plat_vlynq_data {
47         struct plat_vlynq_ops ops;
48         int gpio_bit;
49         int reset_bit;
50 };
51
52 static int vlynq_on(struct vlynq_device *dev)
53 {
54         int ret;
55         struct plat_vlynq_data *pdata = dev->dev.platform_data;
56
57         ret = gpio_request(pdata->gpio_bit, "vlynq");
58         if (ret)
59                 goto out;
60
61         ar7_device_reset(pdata->reset_bit);
62
63         ret = ar7_gpio_disable(pdata->gpio_bit);
64         if (ret)
65                 goto out_enabled;
66
67         ret = ar7_gpio_enable(pdata->gpio_bit);
68         if (ret)
69                 goto out_enabled;
70
71         ret = gpio_direction_output(pdata->gpio_bit, 0);
72         if (ret)
73                 goto out_gpio_enabled;
74
75         msleep(50);
76
77         gpio_set_value(pdata->gpio_bit, 1);
78
79         msleep(50);
80
81         return 0;
82
83 out_gpio_enabled:
84         ar7_gpio_disable(pdata->gpio_bit);
85 out_enabled:
86         ar7_device_disable(pdata->reset_bit);
87         gpio_free(pdata->gpio_bit);
88 out:
89         return ret;
90 }
91
92 static void vlynq_off(struct vlynq_device *dev)
93 {
94         struct plat_vlynq_data *pdata = dev->dev.platform_data;
95
96         ar7_gpio_disable(pdata->gpio_bit);
97         gpio_free(pdata->gpio_bit);
98         ar7_device_disable(pdata->reset_bit);
99 }
100
101 static struct resource vlynq_low_res[] = {
102         {
103                 .name   = "regs",
104                 .flags  = IORESOURCE_MEM,
105                 .start  = AR7_REGS_VLYNQ0,
106                 .end    = AR7_REGS_VLYNQ0 + 0xff,
107         },
108         {
109                 .name   = "irq",
110                 .flags  = IORESOURCE_IRQ,
111                 .start  = 29,
112                 .end    = 29,
113         },
114         {
115                 .name   = "mem",
116                 .flags  = IORESOURCE_MEM,
117                 .start  = 0x04000000,
118                 .end    = 0x04ffffff,
119         },
120         {
121                 .name   = "devirq",
122                 .flags  = IORESOURCE_IRQ,
123                 .start  = 80,
124                 .end    = 111,
125         },
126 };
127
128 static struct resource vlynq_high_res[] = {
129         {
130                 .name   = "regs",
131                 .flags  = IORESOURCE_MEM,
132                 .start  = AR7_REGS_VLYNQ1,
133                 .end    = AR7_REGS_VLYNQ1 + 0xff,
134         },
135         {
136                 .name   = "irq",
137                 .flags  = IORESOURCE_IRQ,
138                 .start  = 33,
139                 .end    = 33,
140         },
141         {
142                 .name   = "mem",
143                 .flags  = IORESOURCE_MEM,
144                 .start  = 0x0c000000,
145                 .end    = 0x0cffffff,
146         },
147         {
148                 .name   = "devirq",
149                 .flags  = IORESOURCE_IRQ,
150                 .start  = 112,
151                 .end    = 143,
152         },
153 };
154
155 static struct plat_vlynq_data vlynq_low_data = {
156         .ops = {
157                 .on     = vlynq_on,
158                 .off    = vlynq_off,
159         },
160         .reset_bit      = 20,
161         .gpio_bit       = 18,
162 };
163
164 static struct plat_vlynq_data vlynq_high_data = {
165         .ops = {
166                 .on     = vlynq_on,
167                 .off    = vlynq_off,
168         },
169         .reset_bit      = 16,
170         .gpio_bit       = 19,
171 };
172
173 static struct platform_device vlynq_low = {
174         .id             = 0,
175         .name           = "vlynq",
176         .dev = {
177                 .platform_data  = &vlynq_low_data,
178         },
179         .resource       = vlynq_low_res,
180         .num_resources  = ARRAY_SIZE(vlynq_low_res),
181 };
182
183 static struct platform_device vlynq_high = {
184         .id             = 1,
185         .name           = "vlynq",
186         .dev = {
187                 .platform_data  = &vlynq_high_data,
188         },
189         .resource       = vlynq_high_res,
190         .num_resources  = ARRAY_SIZE(vlynq_high_res),
191 };
192
193 /*****************************************************************************
194  * Flash
195  ****************************************************************************/
196 static struct resource physmap_flash_resource = {
197         .name   = "mem",
198         .flags  = IORESOURCE_MEM,
199         .start  = 0x10000000,
200         .end    = 0x107fffff,
201 };
202
203 static const char *ar7_probe_types[] = { "ar7part", NULL };
204
205 static struct physmap_flash_data physmap_flash_data = {
206         .width  = 2,
207         .part_probe_types = ar7_probe_types,
208 };
209
210 static struct platform_device physmap_flash = {
211         .name           = "physmap-flash",
212         .dev = {
213                 .platform_data  = &physmap_flash_data,
214         },
215         .resource       = &physmap_flash_resource,
216         .num_resources  = 1,
217 };
218
219 /*****************************************************************************
220  * Ethernet
221  ****************************************************************************/
222 static struct resource cpmac_low_res[] = {
223         {
224                 .name   = "regs",
225                 .flags  = IORESOURCE_MEM,
226                 .start  = AR7_REGS_MAC0,
227                 .end    = AR7_REGS_MAC0 + 0x7ff,
228         },
229         {
230                 .name   = "irq",
231                 .flags  = IORESOURCE_IRQ,
232                 .start  = 27,
233                 .end    = 27,
234         },
235 };
236
237 static struct resource cpmac_high_res[] = {
238         {
239                 .name   = "regs",
240                 .flags  = IORESOURCE_MEM,
241                 .start  = AR7_REGS_MAC1,
242                 .end    = AR7_REGS_MAC1 + 0x7ff,
243         },
244         {
245                 .name   = "irq",
246                 .flags  = IORESOURCE_IRQ,
247                 .start  = 41,
248                 .end    = 41,
249         },
250 };
251
252 static struct fixed_phy_status fixed_phy_status __initdata = {
253         .link           = 1,
254         .speed          = 100,
255         .duplex         = 1,
256 };
257
258 static struct plat_cpmac_data cpmac_low_data = {
259         .reset_bit      = 17,
260         .power_bit      = 20,
261         .phy_mask       = 0x80000000,
262 };
263
264 static struct plat_cpmac_data cpmac_high_data = {
265         .reset_bit      = 21,
266         .power_bit      = 22,
267         .phy_mask       = 0x7fffffff,
268 };
269
270 static u64 cpmac_dma_mask = DMA_BIT_MASK(32);
271
272 static struct platform_device cpmac_low = {
273         .id             = 0,
274         .name           = "cpmac",
275         .dev = {
276                 .dma_mask               = &cpmac_dma_mask,
277                 .coherent_dma_mask      = DMA_BIT_MASK(32),
278                 .platform_data          = &cpmac_low_data,
279         },
280         .resource       = cpmac_low_res,
281         .num_resources  = ARRAY_SIZE(cpmac_low_res),
282 };
283
284 static struct platform_device cpmac_high = {
285         .id             = 1,
286         .name           = "cpmac",
287         .dev = {
288                 .dma_mask               = &cpmac_dma_mask,
289                 .coherent_dma_mask      = DMA_BIT_MASK(32),
290                 .platform_data          = &cpmac_high_data,
291         },
292         .resource       = cpmac_high_res,
293         .num_resources  = ARRAY_SIZE(cpmac_high_res),
294 };
295
296 static void __init cpmac_get_mac(int instance, unsigned char *dev_addr)
297 {
298         char name[5], *mac;
299
300         sprintf(name, "mac%c", 'a' + instance);
301         mac = prom_getenv(name);
302         if (!mac && instance) {
303                 sprintf(name, "mac%c", 'a');
304                 mac = prom_getenv(name);
305         }
306
307         if (mac) {
308                 if (!mac_pton(mac, dev_addr)) {
309                         pr_warn("cannot parse mac address, using random address\n");
310                         eth_random_addr(dev_addr);
311                 }
312         } else
313                 eth_random_addr(dev_addr);
314 }
315
316 /*****************************************************************************
317  * USB
318  ****************************************************************************/
319 static struct resource usb_res[] = {
320         {
321                 .name   = "regs",
322                 .flags  = IORESOURCE_MEM,
323                 .start  = AR7_REGS_USB,
324                 .end    = AR7_REGS_USB + 0xff,
325         },
326         {
327                 .name   = "irq",
328                 .flags  = IORESOURCE_IRQ,
329                 .start  = 32,
330                 .end    = 32,
331         },
332         {
333                 .name   = "mem",
334                 .flags  = IORESOURCE_MEM,
335                 .start  = 0x03400000,
336                 .end    = 0x03401fff,
337         },
338 };
339
340 static struct platform_device ar7_udc = {
341         .name           = "ar7_udc",
342         .resource       = usb_res,
343         .num_resources  = ARRAY_SIZE(usb_res),
344 };
345
346 /*****************************************************************************
347  * LEDs
348  ****************************************************************************/
349 static const struct gpio_led default_leds[] = {
350         {
351                 .name                   = "status",
352                 .gpio                   = 8,
353                 .active_low             = 1,
354         },
355 };
356
357 static const struct gpio_led titan_leds[] = {
358         { .name = "status", .gpio = 8, .active_low = 1, },
359         { .name = "wifi", .gpio = 13, .active_low = 1, },
360 };
361
362 static const struct gpio_led dsl502t_leds[] = {
363         {
364                 .name                   = "status",
365                 .gpio                   = 9,
366                 .active_low             = 1,
367         },
368         {
369                 .name                   = "ethernet",
370                 .gpio                   = 7,
371                 .active_low             = 1,
372         },
373         {
374                 .name                   = "usb",
375                 .gpio                   = 12,
376                 .active_low             = 1,
377         },
378 };
379
380 static const struct gpio_led dg834g_leds[] = {
381         {
382                 .name                   = "ppp",
383                 .gpio                   = 6,
384                 .active_low             = 1,
385         },
386         {
387                 .name                   = "status",
388                 .gpio                   = 7,
389                 .active_low             = 1,
390         },
391         {
392                 .name                   = "adsl",
393                 .gpio                   = 8,
394                 .active_low             = 1,
395         },
396         {
397                 .name                   = "wifi",
398                 .gpio                   = 12,
399                 .active_low             = 1,
400         },
401         {
402                 .name                   = "power",
403                 .gpio                   = 14,
404                 .active_low             = 1,
405                 .default_trigger        = "default-on",
406         },
407 };
408
409 static const struct gpio_led fb_sl_leds[] = {
410         {
411                 .name                   = "1",
412                 .gpio                   = 7,
413         },
414         {
415                 .name                   = "2",
416                 .gpio                   = 13,
417                 .active_low             = 1,
418         },
419         {
420                 .name                   = "3",
421                 .gpio                   = 10,
422                 .active_low             = 1,
423         },
424         {
425                 .name                   = "4",
426                 .gpio                   = 12,
427                 .active_low             = 1,
428         },
429         {
430                 .name                   = "5",
431                 .gpio                   = 9,
432                 .active_low             = 1,
433         },
434 };
435
436 static const struct gpio_led fb_fon_leds[] = {
437         {
438                 .name                   = "1",
439                 .gpio                   = 8,
440         },
441         {
442                 .name                   = "2",
443                 .gpio                   = 3,
444                 .active_low             = 1,
445         },
446         {
447                 .name                   = "3",
448                 .gpio                   = 5,
449         },
450         {
451                 .name                   = "4",
452                 .gpio                   = 4,
453                 .active_low             = 1,
454         },
455         {
456                 .name                   = "5",
457                 .gpio                   = 11,
458                 .active_low             = 1,
459         },
460 };
461
462 static const struct gpio_led gt701_leds[] = {
463         {
464                 .name                   = "inet:green",
465                 .gpio                   = 13,
466                 .active_low             = 1,
467         },
468         {
469                 .name                   = "usb",
470                 .gpio                   = 12,
471                 .active_low             = 1,
472         },
473         {
474                 .name                   = "inet:red",
475                 .gpio                   = 9,
476                 .active_low             = 1,
477         },
478         {
479                 .name                   = "power:red",
480                 .gpio                   = 7,
481                 .active_low             = 1,
482         },
483         {
484                 .name                   = "power:green",
485                 .gpio                   = 8,
486                 .active_low             = 1,
487                 .default_trigger        = "default-on",
488         },
489         {
490                 .name                   = "ethernet",
491                 .gpio                   = 10,
492                 .active_low             = 1,
493         },
494 };
495
496 static struct gpio_led_platform_data ar7_led_data;
497
498 static struct platform_device ar7_gpio_leds = {
499         .name = "leds-gpio",
500         .dev = {
501                 .platform_data = &ar7_led_data,
502         }
503 };
504
505 static void __init detect_leds(void)
506 {
507         char *prid, *usb_prod;
508
509         /* Default LEDs */
510         ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
511         ar7_led_data.leds = default_leds;
512
513         /* FIXME: the whole thing is unreliable */
514         prid = prom_getenv("ProductID");
515         usb_prod = prom_getenv("usb_prod");
516
517         /* If we can't get the product id from PROM, use the default LEDs */
518         if (!prid)
519                 return;
520
521         if (strstr(prid, "Fritz_Box_FON")) {
522                 ar7_led_data.num_leds = ARRAY_SIZE(fb_fon_leds);
523                 ar7_led_data.leds = fb_fon_leds;
524         } else if (strstr(prid, "Fritz_Box_")) {
525                 ar7_led_data.num_leds = ARRAY_SIZE(fb_sl_leds);
526                 ar7_led_data.leds = fb_sl_leds;
527         } else if ((!strcmp(prid, "AR7RD") || !strcmp(prid, "AR7DB"))
528                 && usb_prod != NULL && strstr(usb_prod, "DSL-502T")) {
529                 ar7_led_data.num_leds = ARRAY_SIZE(dsl502t_leds);
530                 ar7_led_data.leds = dsl502t_leds;
531         } else if (strstr(prid, "DG834")) {
532                 ar7_led_data.num_leds = ARRAY_SIZE(dg834g_leds);
533                 ar7_led_data.leds = dg834g_leds;
534         } else if (strstr(prid, "CYWM") || strstr(prid, "CYWL")) {
535                 ar7_led_data.num_leds = ARRAY_SIZE(titan_leds);
536                 ar7_led_data.leds = titan_leds;
537         } else if (strstr(prid, "GT701")) {
538                 ar7_led_data.num_leds = ARRAY_SIZE(gt701_leds);
539                 ar7_led_data.leds = gt701_leds;
540         }
541 }
542
543 /*****************************************************************************
544  * Watchdog
545  ****************************************************************************/
546 static struct resource ar7_wdt_res = {
547         .name           = "regs",
548         .flags          = IORESOURCE_MEM,
549         .start          = -1,   /* Filled at runtime */
550         .end            = -1,   /* Filled at runtime */
551 };
552
553 static struct platform_device ar7_wdt = {
554         .name           = "ar7_wdt",
555         .resource       = &ar7_wdt_res,
556         .num_resources  = 1,
557 };
558
559 /*****************************************************************************
560  * Init
561  ****************************************************************************/
562 static int __init ar7_register_uarts(void)
563 {
564 #ifdef CONFIG_SERIAL_8250
565         static struct uart_port uart_port __initdata;
566         struct clk *bus_clk;
567         int res;
568
569         memset(&uart_port, 0, sizeof(struct uart_port));
570
571         bus_clk = clk_get(NULL, "bus");
572         if (IS_ERR(bus_clk))
573                 panic("unable to get bus clk");
574
575         uart_port.type          = PORT_AR7;
576         uart_port.uartclk       = clk_get_rate(bus_clk) / 2;
577         uart_port.iotype        = UPIO_MEM32;
578         uart_port.flags         = UPF_FIXED_TYPE | UPF_BOOT_AUTOCONF;
579         uart_port.regshift      = 2;
580
581         uart_port.line          = 0;
582         uart_port.irq           = AR7_IRQ_UART0;
583         uart_port.mapbase       = AR7_REGS_UART0;
584         uart_port.membase       = ioremap(uart_port.mapbase, 256);
585
586         res = early_serial_setup(&uart_port);
587         if (res)
588                 return res;
589
590         /* Only TNETD73xx have a second serial port */
591         if (ar7_has_second_uart()) {
592                 uart_port.line          = 1;
593                 uart_port.irq           = AR7_IRQ_UART1;
594                 uart_port.mapbase       = UR8_REGS_UART1;
595                 uart_port.membase       = ioremap(uart_port.mapbase, 256);
596
597                 res = early_serial_setup(&uart_port);
598                 if (res)
599                         return res;
600         }
601 #endif
602
603         return 0;
604 }
605
606 static void __init titan_fixup_devices(void)
607 {
608         /* Set vlynq0 data */
609         vlynq_low_data.reset_bit = 15;
610         vlynq_low_data.gpio_bit = 14;
611
612         /* Set vlynq1 data */
613         vlynq_high_data.reset_bit = 16;
614         vlynq_high_data.gpio_bit = 7;
615
616         /* Set vlynq0 resources */
617         vlynq_low_res[0].start = TITAN_REGS_VLYNQ0;
618         vlynq_low_res[0].end = TITAN_REGS_VLYNQ0 + 0xff;
619         vlynq_low_res[1].start = 33;
620         vlynq_low_res[1].end = 33;
621         vlynq_low_res[2].start = 0x0c000000;
622         vlynq_low_res[2].end = 0x0fffffff;
623         vlynq_low_res[3].start = 80;
624         vlynq_low_res[3].end = 111;
625
626         /* Set vlynq1 resources */
627         vlynq_high_res[0].start = TITAN_REGS_VLYNQ1;
628         vlynq_high_res[0].end = TITAN_REGS_VLYNQ1 + 0xff;
629         vlynq_high_res[1].start = 34;
630         vlynq_high_res[1].end = 34;
631         vlynq_high_res[2].start = 0x40000000;
632         vlynq_high_res[2].end = 0x43ffffff;
633         vlynq_high_res[3].start = 112;
634         vlynq_high_res[3].end = 143;
635
636         /* Set cpmac0 data */
637         cpmac_low_data.phy_mask = 0x40000000;
638
639         /* Set cpmac1 data */
640         cpmac_high_data.phy_mask = 0x80000000;
641
642         /* Set cpmac0 resources */
643         cpmac_low_res[0].start = TITAN_REGS_MAC0;
644         cpmac_low_res[0].end = TITAN_REGS_MAC0 + 0x7ff;
645
646         /* Set cpmac1 resources */
647         cpmac_high_res[0].start = TITAN_REGS_MAC1;
648         cpmac_high_res[0].end = TITAN_REGS_MAC1 + 0x7ff;
649 }
650
651 static int __init ar7_register_devices(void)
652 {
653         void __iomem *bootcr;
654         u32 val;
655         int res;
656
657         res = ar7_gpio_init();
658         if (res)
659                 pr_warn("unable to register gpios: %d\n", res);
660
661         res = ar7_register_uarts();
662         if (res)
663                 pr_err("unable to setup uart(s): %d\n", res);
664
665         res = platform_device_register(&physmap_flash);
666         if (res)
667                 pr_warn("unable to register physmap-flash: %d\n", res);
668
669         if (ar7_is_titan())
670                 titan_fixup_devices();
671
672         ar7_device_disable(vlynq_low_data.reset_bit);
673         res = platform_device_register(&vlynq_low);
674         if (res)
675                 pr_warn("unable to register vlynq-low: %d\n", res);
676
677         if (ar7_has_high_vlynq()) {
678                 ar7_device_disable(vlynq_high_data.reset_bit);
679                 res = platform_device_register(&vlynq_high);
680                 if (res)
681                         pr_warn("unable to register vlynq-high: %d\n", res);
682         }
683
684         if (ar7_has_high_cpmac()) {
685                 res = fixed_phy_add(PHY_POLL, cpmac_high.id,
686                                     &fixed_phy_status, -1);
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_warn("unable to register cpmac-high: %d\n",
693                                         res);
694                 } else
695                         pr_warn("unable to add cpmac-high phy: %d\n", res);
696         } else
697                 cpmac_low_data.phy_mask = 0xffffffff;
698
699         res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status, -1);
700         if (!res) {
701                 cpmac_get_mac(0, cpmac_low_data.dev_addr);
702                 res = platform_device_register(&cpmac_low);
703                 if (res)
704                         pr_warn("unable to register cpmac-low: %d\n", res);
705         } else
706                 pr_warn("unable to add cpmac-low phy: %d\n", res);
707
708         detect_leds();
709         res = platform_device_register(&ar7_gpio_leds);
710         if (res)
711                 pr_warn("unable to register leds: %d\n", res);
712
713         res = platform_device_register(&ar7_udc);
714         if (res)
715                 pr_warn("unable to register usb slave: %d\n", res);
716
717         /* Register watchdog only if enabled in hardware */
718         bootcr = ioremap_nocache(AR7_REGS_DCL, 4);
719         val = readl(bootcr);
720         iounmap(bootcr);
721         if (val & AR7_WDT_HW_ENA) {
722                 if (ar7_has_high_vlynq())
723                         ar7_wdt_res.start = UR8_REGS_WDT;
724                 else
725                         ar7_wdt_res.start = AR7_REGS_WDT;
726
727                 ar7_wdt_res.end = ar7_wdt_res.start + 0x20;
728                 res = platform_device_register(&ar7_wdt);
729                 if (res)
730                         pr_warn("unable to register watchdog: %d\n", res);
731         }
732
733         return 0;
734 }
735 device_initcall(ar7_register_devices);