Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
[linux-2.6.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 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 void __init cpmac_get_mac(int instance, unsigned char *dev_addr)
296 {
297         char name[5], *mac;
298
299         sprintf(name, "mac%c", 'a' + instance);
300         mac = prom_getenv(name);
301         if (!mac && instance) {
302                 sprintf(name, "mac%c", 'a');
303                 mac = prom_getenv(name);
304         }
305
306         if (mac) {
307                 if (sscanf(mac, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
308                                         &dev_addr[0], &dev_addr[1],
309                                         &dev_addr[2], &dev_addr[3],
310                                         &dev_addr[4], &dev_addr[5]) != 6) {
311                         pr_warning("cannot parse mac address, "
312                                         "using random address\n");
313                         random_ether_addr(dev_addr);
314                 }
315         } else
316                 random_ether_addr(dev_addr);
317 }
318
319 /*****************************************************************************
320  * USB
321  ****************************************************************************/
322 static struct resource usb_res[] = {
323         {
324                 .name   = "regs",
325                 .flags  = IORESOURCE_MEM,
326                 .start  = AR7_REGS_USB,
327                 .end    = AR7_REGS_USB + 0xff,
328         },
329         {
330                 .name   = "irq",
331                 .flags  = IORESOURCE_IRQ,
332                 .start  = 32,
333                 .end    = 32,
334         },
335         {
336                 .name   = "mem",
337                 .flags  = IORESOURCE_MEM,
338                 .start  = 0x03400000,
339                 .end    = 0x03401fff,
340         },
341 };
342
343 static struct platform_device ar7_udc = {
344         .name           = "ar7_udc",
345         .resource       = usb_res,
346         .num_resources  = ARRAY_SIZE(usb_res),
347 };
348
349 /*****************************************************************************
350  * LEDs
351  ****************************************************************************/
352 static struct gpio_led default_leds[] = {
353         {
354                 .name                   = "status",
355                 .gpio                   = 8,
356                 .active_low             = 1,
357         },
358 };
359
360 static struct gpio_led titan_leds[] = {
361         { .name = "status", .gpio = 8, .active_low = 1, },
362         { .name = "wifi", .gpio = 13, .active_low = 1, },
363 };
364
365 static struct gpio_led dsl502t_leds[] = {
366         {
367                 .name                   = "status",
368                 .gpio                   = 9,
369                 .active_low             = 1,
370         },
371         {
372                 .name                   = "ethernet",
373                 .gpio                   = 7,
374                 .active_low             = 1,
375         },
376         {
377                 .name                   = "usb",
378                 .gpio                   = 12,
379                 .active_low             = 1,
380         },
381 };
382
383 static struct gpio_led dg834g_leds[] = {
384         {
385                 .name                   = "ppp",
386                 .gpio                   = 6,
387                 .active_low             = 1,
388         },
389         {
390                 .name                   = "status",
391                 .gpio                   = 7,
392                 .active_low             = 1,
393         },
394         {
395                 .name                   = "adsl",
396                 .gpio                   = 8,
397                 .active_low             = 1,
398         },
399         {
400                 .name                   = "wifi",
401                 .gpio                   = 12,
402                 .active_low             = 1,
403         },
404         {
405                 .name                   = "power",
406                 .gpio                   = 14,
407                 .active_low             = 1,
408                 .default_trigger        = "default-on",
409         },
410 };
411
412 static struct gpio_led fb_sl_leds[] = {
413         {
414                 .name                   = "1",
415                 .gpio                   = 7,
416         },
417         {
418                 .name                   = "2",
419                 .gpio                   = 13,
420                 .active_low             = 1,
421         },
422         {
423                 .name                   = "3",
424                 .gpio                   = 10,
425                 .active_low             = 1,
426         },
427         {
428                 .name                   = "4",
429                 .gpio                   = 12,
430                 .active_low             = 1,
431         },
432         {
433                 .name                   = "5",
434                 .gpio                   = 9,
435                 .active_low             = 1,
436         },
437 };
438
439 static struct gpio_led fb_fon_leds[] = {
440         {
441                 .name                   = "1",
442                 .gpio                   = 8,
443         },
444         {
445                 .name                   = "2",
446                 .gpio                   = 3,
447                 .active_low             = 1,
448         },
449         {
450                 .name                   = "3",
451                 .gpio                   = 5,
452         },
453         {
454                 .name                   = "4",
455                 .gpio                   = 4,
456                 .active_low             = 1,
457         },
458         {
459                 .name                   = "5",
460                 .gpio                   = 11,
461                 .active_low             = 1,
462         },
463 };
464
465 static struct gpio_led_platform_data ar7_led_data;
466
467 static struct platform_device ar7_gpio_leds = {
468         .name = "leds-gpio",
469         .dev = {
470                 .platform_data = &ar7_led_data,
471         }
472 };
473
474 static void __init detect_leds(void)
475 {
476         char *prid, *usb_prod;
477
478         /* Default LEDs */
479         ar7_led_data.num_leds = ARRAY_SIZE(default_leds);
480         ar7_led_data.leds = default_leds;
481
482         /* FIXME: the whole thing is unreliable */
483         prid = prom_getenv("ProductID");
484         usb_prod = prom_getenv("usb_prod");
485
486         /* If we can't get the product id from PROM, use the default LEDs */
487         if (!prid)
488                 return;
489
490         if (strstr(prid, "Fritz_Box_FON")) {
491                 ar7_led_data.num_leds = ARRAY_SIZE(fb_fon_leds);
492                 ar7_led_data.leds = fb_fon_leds;
493         } else if (strstr(prid, "Fritz_Box_")) {
494                 ar7_led_data.num_leds = ARRAY_SIZE(fb_sl_leds);
495                 ar7_led_data.leds = fb_sl_leds;
496         } else if ((!strcmp(prid, "AR7RD") || !strcmp(prid, "AR7DB"))
497                 && usb_prod != NULL && strstr(usb_prod, "DSL-502T")) {
498                 ar7_led_data.num_leds = ARRAY_SIZE(dsl502t_leds);
499                 ar7_led_data.leds = dsl502t_leds;
500         } else if (strstr(prid, "DG834")) {
501                 ar7_led_data.num_leds = ARRAY_SIZE(dg834g_leds);
502                 ar7_led_data.leds = dg834g_leds;
503         } else if (strstr(prid, "CYWM") || strstr(prid, "CYWL")) {
504                 ar7_led_data.num_leds = ARRAY_SIZE(titan_leds);
505                 ar7_led_data.leds = titan_leds;
506         }
507 }
508
509 /*****************************************************************************
510  * Watchdog
511  ****************************************************************************/
512 static struct resource ar7_wdt_res = {
513         .name           = "regs",
514         .flags          = IORESOURCE_MEM,
515         .start          = -1,   /* Filled at runtime */
516         .end            = -1,   /* Filled at runtime */
517 };
518
519 static struct platform_device ar7_wdt = {
520         .name           = "ar7_wdt",
521         .resource       = &ar7_wdt_res,
522         .num_resources  = 1,
523 };
524
525 /*****************************************************************************
526  * Init
527  ****************************************************************************/
528 static int __init ar7_register_uarts(void)
529 {
530 #ifdef CONFIG_SERIAL_8250
531         static struct uart_port uart_port __initdata;
532         struct clk *bus_clk;
533         int res;
534
535         memset(&uart_port, 0, sizeof(struct uart_port));
536
537         bus_clk = clk_get(NULL, "bus");
538         if (IS_ERR(bus_clk))
539                 panic("unable to get bus clk\n");
540
541         uart_port.type          = PORT_AR7;
542         uart_port.uartclk       = clk_get_rate(bus_clk) / 2;
543         uart_port.iotype        = UPIO_MEM32;
544         uart_port.regshift      = 2;
545
546         uart_port.line          = 0;
547         uart_port.irq           = AR7_IRQ_UART0;
548         uart_port.mapbase       = AR7_REGS_UART0;
549         uart_port.membase       = ioremap(uart_port.mapbase, 256);
550
551         res = early_serial_setup(&uart_port);
552         if (res)
553                 return res;
554
555         /* Only TNETD73xx have a second serial port */
556         if (ar7_has_second_uart()) {
557                 uart_port.line          = 1;
558                 uart_port.irq           = AR7_IRQ_UART1;
559                 uart_port.mapbase       = UR8_REGS_UART1;
560                 uart_port.membase       = ioremap(uart_port.mapbase, 256);
561
562                 res = early_serial_setup(&uart_port);
563                 if (res)
564                         return res;
565         }
566 #endif
567
568         return 0;
569 }
570
571 static void __init titan_fixup_devices(void)
572 {
573         /* Set vlynq0 data */
574         vlynq_low_data.reset_bit = 15;
575         vlynq_low_data.gpio_bit = 14;
576
577         /* Set vlynq1 data */
578         vlynq_high_data.reset_bit = 16;
579         vlynq_high_data.gpio_bit = 7;
580
581         /* Set vlynq0 resources */
582         vlynq_low_res[0].start = TITAN_REGS_VLYNQ0;
583         vlynq_low_res[0].end = TITAN_REGS_VLYNQ0 + 0xff;
584         vlynq_low_res[1].start = 33;
585         vlynq_low_res[1].end = 33;
586         vlynq_low_res[2].start = 0x0c000000;
587         vlynq_low_res[2].end = 0x0fffffff;
588         vlynq_low_res[3].start = 80;
589         vlynq_low_res[3].end = 111;
590
591         /* Set vlynq1 resources */
592         vlynq_high_res[0].start = TITAN_REGS_VLYNQ1;
593         vlynq_high_res[0].end = TITAN_REGS_VLYNQ1 + 0xff;
594         vlynq_high_res[1].start = 34;
595         vlynq_high_res[1].end = 34;
596         vlynq_high_res[2].start = 0x40000000;
597         vlynq_high_res[2].end = 0x43ffffff;
598         vlynq_high_res[3].start = 112;
599         vlynq_high_res[3].end = 143;
600
601         /* Set cpmac0 data */
602         cpmac_low_data.phy_mask = 0x40000000;
603
604         /* Set cpmac1 data */
605         cpmac_high_data.phy_mask = 0x80000000;
606
607         /* Set cpmac0 resources */
608         cpmac_low_res[0].start = TITAN_REGS_MAC0;
609         cpmac_low_res[0].end = TITAN_REGS_MAC0 + 0x7ff;
610
611         /* Set cpmac1 resources */
612         cpmac_high_res[0].start = TITAN_REGS_MAC1;
613         cpmac_high_res[0].end = TITAN_REGS_MAC1 + 0x7ff;
614 }
615
616 static int __init ar7_register_devices(void)
617 {
618         void __iomem *bootcr;
619         u32 val;
620         int res;
621
622         res = ar7_register_uarts();
623         if (res)
624                 pr_err("unable to setup uart(s): %d\n", res);
625
626         res = platform_device_register(&physmap_flash);
627         if (res)
628                 pr_warning("unable to register physmap-flash: %d\n", res);
629
630         if (ar7_is_titan())
631                 titan_fixup_devices();
632
633         ar7_device_disable(vlynq_low_data.reset_bit);
634         res = platform_device_register(&vlynq_low);
635         if (res)
636                 pr_warning("unable to register vlynq-low: %d\n", res);
637
638         if (ar7_has_high_vlynq()) {
639                 ar7_device_disable(vlynq_high_data.reset_bit);
640                 res = platform_device_register(&vlynq_high);
641                 if (res)
642                         pr_warning("unable to register vlynq-high: %d\n", res);
643         }
644
645         if (ar7_has_high_cpmac()) {
646                 res = fixed_phy_add(PHY_POLL, cpmac_high.id, &fixed_phy_status);
647                 if (!res) {
648                         cpmac_get_mac(1, cpmac_high_data.dev_addr);
649
650                         res = platform_device_register(&cpmac_high);
651                         if (res)
652                                 pr_warning("unable to register cpmac-high: %d\n", res);
653                 } else
654                         pr_warning("unable to add cpmac-high phy: %d\n", res);
655         } else
656                 cpmac_low_data.phy_mask = 0xffffffff;
657
658         res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status);
659         if (!res) {
660                 cpmac_get_mac(0, cpmac_low_data.dev_addr);
661                 res = platform_device_register(&cpmac_low);
662                 if (res)
663                         pr_warning("unable to register cpmac-low: %d\n", res);
664         } else
665                 pr_warning("unable to add cpmac-low phy: %d\n", res);
666
667         detect_leds();
668         res = platform_device_register(&ar7_gpio_leds);
669         if (res)
670                 pr_warning("unable to register leds: %d\n", res);
671
672         res = platform_device_register(&ar7_udc);
673         if (res)
674                 pr_warning("unable to register usb slave: %d\n", res);
675
676         /* Register watchdog only if enabled in hardware */
677         bootcr = ioremap_nocache(AR7_REGS_DCL, 4);
678         val = readl(bootcr);
679         iounmap(bootcr);
680         if (val & AR7_WDT_HW_ENA) {
681                 if (ar7_has_high_vlynq())
682                         ar7_wdt_res.start = UR8_REGS_WDT;
683                 else
684                         ar7_wdt_res.start = AR7_REGS_WDT;
685
686                 ar7_wdt_res.end = ar7_wdt_res.start + 0x20;
687                 res = platform_device_register(&ar7_wdt);
688                 if (res)
689                         pr_warning("unable to register watchdog: %d\n", res);
690         }
691
692         return 0;
693 }
694 device_initcall(ar7_register_devices);