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update to imq patch version 2.6.19-imq3 - fixes kernel oops from #1397
[openwrt.git] / package / broadcom-diag / src / diag.c
1 /*
2 * diag.c - GPIO interface driver for Broadcom boards
3 *
4 * Copyright (C) 2006 Mike Baker <mbm@openwrt.org>,
5 * Felix Fietkau <nbd@openwrt.org>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 *
21 * $Id$
22 */
23 #include <linux/module.h>
24 #include <linux/pci.h>
25 #include <linux/kmod.h>
26 #include <linux/proc_fs.h>
27 #include <linux/timer.h>
28 #include <linux/version.h>
29 #include <asm/uaccess.h>
30
31 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
32 #include <linux/kobject.h>
33 #include <linux/workqueue.h>
34 #define hotplug_path uevent_helper
35 #else
36 #include <linux/tqueue.h>
37 #define INIT_WORK INIT_TQUEUE
38 #define schedule_work schedule_task
39 #define work_struct tq_struct
40 #endif
41
42 #include "gpio.h"
43 #include "diag.h"
44 #define getvar(str) (nvram_get(str)?:"")
45
46 static unsigned int gpiomask = 0;
47 module_param(gpiomask, int, 0644);
48
49 enum {
50 /* Linksys */
51 WAP54GV1,
52 WAP54GV3,
53 WRT54GV1,
54 WRT54G,
55 WRTSL54GS,
56 WRT54G3G,
57 WRT350N,
58
59 /* ASUS */
60 WLHDD,
61 WL300G,
62 WL500G,
63 WL500GD,
64 WL500GP,
65 WL500W,
66 ASUS_4702,
67 WL700GE,
68
69 /* Buffalo */
70 WBR2_G54,
71 WHR_G54S,
72 WHR_HP_G54,
73 WHR2_A54G54,
74 WLA2_G54L,
75 WZR_G300N,
76 WZR_RS_G54,
77 WZR_RS_G54HP,
78 BUFFALO_UNKNOWN,
79 BUFFALO_UNKNOWN_4710,
80
81 /* Siemens */
82 SE505V1,
83 SE505V2,
84
85 /* US Robotics */
86 USR5461,
87
88 /* Dell */
89 TM2300,
90
91 /* Motorola */
92 WE800G,
93 WR850GV1,
94 WR850GV2V3,
95
96 /* Belkin */
97 BELKIN_UNKNOWN,
98
99 /* Netgear */
100 WGT634U,
101
102 /* Trendware */
103 TEW411BRPP,
104 };
105
106 static void __init wl700ge_init(void) {
107 int pin = 1 << 3;
108
109 /* Enables GPIO 3 that controls HDD and led power on ASUS WL-700gE */
110 printk(MODULE_NAME ": Spinning up HDD and enabling leds\n");
111 gpio_outen(pin, pin);
112 gpio_control(pin, 0);
113 gpio_out(pin, pin);
114
115 /* Wait 5s, so the HDD can spin up */
116 set_current_state(TASK_INTERRUPTIBLE);
117 schedule_timeout(HZ * 5);
118 }
119
120 static struct platform_t __initdata platforms[] = {
121 /* Linksys */
122 [WAP54GV1] = {
123 .name = "Linksys WAP54G V1",
124 .buttons = {
125 { .name = "reset", .gpio = 1 << 0 },
126 },
127 .leds = {
128 { .name = "diag", .gpio = 1 << 3 },
129 { .name = "wlan", .gpio = 1 << 4 },
130 },
131 },
132 [WAP54GV3] = {
133 .name = "Linksys WAP54G V3",
134 .buttons = {
135 /* FIXME: verify this */
136 { .name = "reset", .gpio = 1 << 7 },
137 { .name = "ses", .gpio = 1 << 0 },
138 },
139 .leds = {
140 /* FIXME: diag? */
141 { .name = "ses", .gpio = 1 << 1 },
142 },
143 },
144 [WRT54GV1] = {
145 .name = "Linksys WRT54G V1.x",
146 .buttons = {
147 { .name = "reset", .gpio = 1 << 6 },
148 },
149 .leds = {
150 { .name = "diag", .gpio = 0x13 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
151 { .name = "dmz", .gpio = 0x12 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
152 },
153 },
154 [WRT54G] = {
155 .name = "Linksys WRT54G/GS/GL",
156 .buttons = {
157 { .name = "reset", .gpio = 1 << 6 },
158 { .name = "ses", .gpio = 1 << 4 },
159 },
160 .leds = {
161 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
162 { .name = "dmz", .gpio = 1 << 7, .polarity = REVERSE },
163 { .name = "ses_white", .gpio = 1 << 2, .polarity = REVERSE },
164 { .name = "ses_orange", .gpio = 1 << 3, .polarity = REVERSE },
165 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
166 },
167 },
168 [WRTSL54GS] = {
169 .name = "Linksys WRTSL54GS",
170 .buttons = {
171 { .name = "reset", .gpio = 1 << 6 },
172 { .name = "ses", .gpio = 1 << 4 },
173 },
174 .leds = {
175 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
176 { .name = "dmz", .gpio = 1 << 0, .polarity = REVERSE },
177 { .name = "ses_white", .gpio = 1 << 5, .polarity = REVERSE },
178 { .name = "ses_orange", .gpio = 1 << 7, .polarity = REVERSE },
179 },
180 },
181 [WRT54G3G] = {
182 .name = "Linksys WRT54G3G",
183 .buttons = {
184 { .name = "reset", .gpio = 1 << 6 },
185 { .name = "3g", .gpio = 1 << 4 },
186 },
187 .leds = {
188 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
189 { .name = "dmz", .gpio = 1 << 7, .polarity = REVERSE },
190 { .name = "3g_green", .gpio = 1 << 2, .polarity = NORMAL },
191 { .name = "3g_blue", .gpio = 1 << 3, .polarity = NORMAL },
192 { .name = "3g_blink", .gpio = 1 << 5, .polarity = NORMAL },
193 },
194 },
195 [WRT350N] = {
196 .name = "Linksys WRT350N",
197 .buttons = {
198 { .name = "reset", .gpio = 1 << 6 },
199 { .name = "ses", .gpio = 1 << 8 },
200 },
201 .leds = {
202 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
203 { .name = "ses", .gpio = 1 << 3, .polarity = REVERSE },
204 },
205 },
206 /* Asus */
207 [WLHDD] = {
208 .name = "ASUS WL-HDD",
209 .buttons = {
210 { .name = "reset", .gpio = 1 << 6 },
211 },
212 .leds = {
213 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
214 { .name = "usb", .gpio = 1 << 2, .polarity = NORMAL },
215 },
216 },
217 [WL300G] = {
218 .name = "ASUS WL-300g",
219 .buttons = {
220 { .name = "reset", .gpio = 1 << 6 },
221 },
222 .leds = {
223 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
224 },
225 },
226 [WL500G] = {
227 .name = "ASUS WL-500g",
228 .buttons = {
229 { .name = "reset", .gpio = 1 << 6 },
230 },
231 .leds = {
232 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
233 },
234 },
235 [WL500GD] = {
236 .name = "ASUS WL-500g Deluxe",
237 .buttons = {
238 { .name = "reset", .gpio = 1 << 6 },
239 },
240 .leds = {
241 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
242 },
243 },
244 [WL500GP] = {
245 .name = "ASUS WL-500g Premium",
246 .buttons = {
247 { .name = "reset", .gpio = 1 << 0 },
248 { .name = "ses", .gpio = 1 << 4 },
249 },
250 .leds = {
251 { .name = "power", .gpio = 1 << 1, .polarity = REVERSE },
252 },
253 },
254 [WL500W] = {
255 .name = "ASUS WL-500W",
256 .buttons = {
257 { .name = "reset", .gpio = 1 << 6 },
258 { .name = "ses", .gpio = 1 << 7 },
259 },
260 .leds = {
261 { .name = "power", .gpio = 1 << 5, .polarity = REVERSE },
262 },
263 },
264 [ASUS_4702] = {
265 .name = "ASUS (unknown, BCM4702)",
266 .buttons = {
267 { .name = "reset", .gpio = 1 << 6 },
268 },
269 .leds = {
270 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
271 },
272 },
273 [WL700GE] = {
274 .name = "ASUS WL-700gE",
275 .buttons = {
276 { .name = "reset", .gpio = 1 << 7 }, // on back, hardwired, always resets device regardless OS state
277 { .name = "ses", .gpio = 1 << 4 }, // on back, actual name ezsetup
278 { .name = "power", .gpio = 1 << 0 }, // on front
279 { .name = "copy", .gpio = 1 << 6 }, // on front
280 },
281 .leds = {
282 #if 0
283 // GPIO that controls power led also enables/disables some essential functions
284 // - power to HDD
285 // - switch leds
286 { .name = "power", .gpio = 1 << 3, .polarity = NORMAL }, // actual name power
287 #endif
288 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE }, // actual name ready
289 },
290 .platform_init = wl700ge_init,
291 },
292 /* Buffalo */
293 [WHR_G54S] = {
294 .name = "Buffalo WHR-G54S",
295 .buttons = {
296 { .name = "reset", .gpio = 1 << 4 },
297 { .name = "bridge", .gpio = 1 << 5 },
298 { .name = "ses", .gpio = 1 << 0 },
299 },
300 .leds = {
301 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
302 { .name = "internal", .gpio = 1 << 3, .polarity = REVERSE },
303 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
304 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
305 },
306 },
307 [WBR2_G54] = {
308 .name = "Buffalo WBR2-G54",
309 /* FIXME: verify */
310 .buttons = {
311 { .name = "reset", .gpio = 1 << 7 },
312 },
313 .leds = {
314 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
315 },
316 },
317 [WHR_HP_G54] = {
318 .name = "Buffalo WHR-HP-G54",
319 .buttons = {
320 { .name = "reset", .gpio = 1 << 4 },
321 { .name = "bridge", .gpio = 1 << 5 },
322 { .name = "ses", .gpio = 1 << 0 },
323 },
324 .leds = {
325 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
326 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
327 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
328 },
329 },
330 [WHR2_A54G54] = {
331 .name = "Buffalo WHR2-A54G54",
332 .buttons = {
333 { .name = "reset", .gpio = 1 << 4 },
334 },
335 .leds = {
336 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
337 },
338 },
339 [WLA2_G54L] = {
340 .name = "Buffalo WLA2-G54L",
341 /* FIXME: verify */
342 .buttons = {
343 { .name = "reset", .gpio = 1 << 7 },
344 },
345 .leds = {
346 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
347 },
348 },
349 [WZR_G300N] = {
350 .name = "Buffalo WZR-G300N",
351 .buttons = {
352 { .name = "reset", .gpio = 1 << 4 },
353 },
354 .leds = {
355 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
356 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
357 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
358 },
359 },
360 [WZR_RS_G54] = {
361 .name = "Buffalo WZR-RS-G54",
362 .buttons = {
363 { .name = "ses", .gpio = 1 << 0 },
364 { .name = "reset", .gpio = 1 << 4 },
365 },
366 .leds = {
367 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
368 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
369 { .name = "vpn", .gpio = 1 << 1, .polarity = REVERSE },
370 },
371 },
372 [WZR_RS_G54HP] = {
373 .name = "Buffalo WZR-RS-G54HP",
374 .buttons = {
375 { .name = "ses", .gpio = 1 << 0 },
376 { .name = "reset", .gpio = 1 << 4 },
377 },
378 .leds = {
379 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
380 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
381 { .name = "vpn", .gpio = 1 << 1, .polarity = REVERSE },
382 },
383 },
384 [BUFFALO_UNKNOWN] = {
385 .name = "Buffalo (unknown)",
386 .buttons = {
387 { .name = "reset", .gpio = 1 << 7 },
388 },
389 .leds = {
390 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
391 },
392 },
393 [BUFFALO_UNKNOWN_4710] = {
394 .name = "Buffalo (unknown, BCM4710)",
395 .buttons = {
396 { .name = "reset", .gpio = 1 << 4 },
397 },
398 .leds = {
399 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
400 },
401 },
402 /* Siemens */
403 [SE505V1] = {
404 .name = "Siemens SE505 V1",
405 .buttons = {
406 /* No usable buttons */
407 },
408 .leds = {
409 { .name = "dmz", .gpio = 1 << 4, .polarity = REVERSE },
410 { .name = "wlan", .gpio = 1 << 3, .polarity = REVERSE },
411 },
412 },
413 [SE505V2] = {
414 .name = "Siemens SE505 V2",
415 .buttons = {
416 /* No usable buttons */
417 },
418 .leds = {
419 { .name = "power", .gpio = 1 << 5, .polarity = REVERSE },
420 { .name = "dmz", .gpio = 1 << 0, .polarity = REVERSE },
421 { .name = "wlan", .gpio = 1 << 3, .polarity = REVERSE },
422 },
423 },
424 /* US Robotics */
425 [USR5461] = {
426 .name = "U.S. Robotics USR5461",
427 .buttons = {
428 /* No usable buttons */
429 },
430 .leds = {
431 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
432 { .name = "printer", .gpio = 1 << 1, .polarity = REVERSE },
433 },
434 },
435 /* Dell */
436 [TM2300] = {
437 .name = "Dell TrueMobile 2300",
438 .buttons = {
439 { .name = "reset", .gpio = 1 << 0 },
440 },
441 .leds = {
442 { .name = "wlan", .gpio = 1 << 6, .polarity = REVERSE },
443 { .name = "power", .gpio = 1 << 7, .polarity = REVERSE },
444 },
445 },
446 /* Motorola */
447 [WE800G] = {
448 .name = "Motorola WE800G",
449 .buttons = {
450 { .name = "reset", .gpio = 1 << 0 },
451 },
452 .leds = {
453 { .name = "power", .gpio = 1 << 4, .polarity = NORMAL },
454 { .name = "diag", .gpio = 1 << 2, .polarity = REVERSE },
455 { .name = "wlan_amber", .gpio = 1 << 1, .polarity = NORMAL },
456 },
457 },
458 [WR850GV1] = {
459 .name = "Motorola WR850G V1",
460 .buttons = {
461 { .name = "reset", .gpio = 1 << 0 },
462 },
463 .leds = {
464 { .name = "power", .gpio = 1 << 4, .polarity = NORMAL },
465 { .name = "diag", .gpio = 1 << 3, .polarity = REVERSE },
466 { .name = "dmz", .gpio = 1 << 6, .polarity = NORMAL },
467 { .name = "wlan_red", .gpio = 1 << 5, .polarity = REVERSE },
468 { .name = "wlan_green", .gpio = 1 << 7, .polarity = REVERSE },
469 },
470 },
471 [WR850GV2V3] = {
472 .name = "Motorola WR850G V2/V3",
473 .buttons = {
474 { .name = "reset", .gpio = 1 << 5 },
475 },
476 .leds = {
477 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
478 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
479 { .name = "dmz", .gpio = 1 << 6, .polarity = REVERSE },
480 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
481 },
482 },
483 /* Belkin */
484 [BELKIN_UNKNOWN] = {
485 .name = "Belkin (unknown)",
486 /* FIXME: verify & add detection */
487 .buttons = {
488 { .name = "reset", .gpio = 1 << 7 },
489 },
490 .leds = {
491 { .name = "power", .gpio = 1 << 5, .polarity = NORMAL },
492 { .name = "wlan", .gpio = 1 << 3, .polarity = NORMAL },
493 { .name = "connected", .gpio = 1 << 0, .polarity = NORMAL },
494 },
495 },
496 /* Netgear */
497 [WGT634U] = {
498 .name = "Netgear WGT634U",
499 .buttons = {
500 { .name = "reset", .gpio = 1 << 2 },
501 },
502 .leds = {
503 { .name = "power", .gpio = 1 << 3, .polarity = REVERSE },
504 },
505 },
506 /* Trendware */
507 [TEW411BRPP] = {
508 .name = "Trendware TEW411BRP+",
509 .buttons = {
510 { /* No usable buttons */ },
511 },
512 .leds = {
513 { .name = "power", .gpio = 1 << 7, .polarity = NORMAL },
514 { .name = "wlan", .gpio = 1 << 1, .polarity = NORMAL },
515 { .name = "bridge", .gpio = 1 << 6, .polarity = NORMAL },
516 },
517 },
518 };
519
520 static struct platform_t __init *platform_detect(void)
521 {
522 char *boardnum, *boardtype, *buf;
523
524 boardnum = getvar("boardnum");
525 boardtype = getvar("boardtype");
526
527 if (strncmp(getvar("model_no"), "WL700",5) == 0) {
528 return &platforms[WL700GE]; }
529
530 if (strncmp(getvar("pmon_ver"), "CFE", 3) == 0) {
531 /* CFE based - newer hardware */
532 if (!strcmp(boardnum, "42")) { /* Linksys */
533 if (!strcmp(boardtype, "0x478") && !strcmp(getvar("cardbus"), "1"))
534 return &platforms[WRT350N];
535
536 if (!strcmp(boardtype, "0x0101") && !strcmp(getvar("boot_ver"), "v3.6"))
537 return &platforms[WRT54G3G];
538
539 if (!strcmp(getvar("et1phyaddr"),"5") && !strcmp(getvar("et1mdcport"), "1"))
540 return &platforms[WRTSL54GS];
541
542 /* default to WRT54G */
543 return &platforms[WRT54G];
544 }
545
546 if (!strcmp(boardnum, "45")) { /* ASUS */
547 if (!strcmp(boardtype,"0x042f"))
548 return &platforms[WL500GP];
549 else if (!strcmp(boardtype,"0x0472"))
550 return &platforms[WL500W];
551 else
552 return &platforms[WL500GD];
553 }
554
555 if (!strcmp(boardnum, "10496"))
556 return &platforms[USR5461];
557 } else { /* PMON based - old stuff */
558
559 /* Dell TrueMobile 2300 */
560 if (!strcmp(getvar("ModelId"),"WX-5565"))
561 return &platforms[TM2300];
562
563 if ((simple_strtoul(getvar("GemtekPmonVer"), NULL, 0) == 9) &&
564 (simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 30)) {
565 if (!strncmp(getvar("ModelId"),"WE800G", 6))
566 return &platforms[WE800G];
567 else
568 return &platforms[WR850GV1];
569 }
570 if (!strncmp(boardtype, "bcm94710dev", 11)) {
571 if (!strcmp(boardnum, "42"))
572 return &platforms[WRT54GV1];
573 if (simple_strtoul(boardnum, NULL, 0) == 2)
574 return &platforms[WAP54GV1];
575 }
576 if (!strncmp(getvar("hardware_version"), "WL500-", 6))
577 return &platforms[WL500G];
578 if (!strncmp(getvar("hardware_version"), "WL300-", 6)) {
579 /* Either WL-300g or WL-HDD, do more extensive checks */
580 if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
581 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 1))
582 return &platforms[WLHDD];
583 if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
584 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 10))
585 return &platforms[WL300G];
586 }
587
588 /* unknown asus stuff, probably bcm4702 */
589 if (!strncmp(boardnum, "asusX", 5))
590 return &platforms[ASUS_4702];
591 }
592
593 if ((buf = (nvram_get("melco_id") ?: nvram_get("buffalo_id")))) {
594 /* Buffalo hardware, check id for specific hardware matches */
595 if (!strcmp(buf, "29bb0332"))
596 return &platforms[WBR2_G54];
597 if (!strcmp(buf, "29129"))
598 return &platforms[WLA2_G54L];
599 if (!strcmp(buf, "30189"))
600 return &platforms[WHR_HP_G54];
601 if (!strcmp(buf, "30182"))
602 return &platforms[WHR_G54S];
603 if (!strcmp(buf, "290441dd"))
604 return &platforms[WHR2_A54G54];
605 if (!strcmp(buf, "31120"))
606 return &platforms[WZR_G300N];
607 if (!strcmp(buf, "30083"))
608 return &platforms[WZR_RS_G54];
609 if (!strcmp(buf, "30103"))
610 return &platforms[WZR_RS_G54HP];
611 }
612
613 if (buf || !strcmp(boardnum, "00")) {/* probably buffalo */
614 if (!strncmp(boardtype, "bcm94710ap", 10))
615 return &platforms[BUFFALO_UNKNOWN_4710];
616 else
617 return &platforms[BUFFALO_UNKNOWN];
618 }
619
620 if (!strcmp(getvar("CFEver"), "MotoWRv203") ||
621 !strcmp(getvar("MOTO_BOARD_TYPE"), "WR_FEM1")) {
622
623 return &platforms[WR850GV2V3];
624 }
625
626 if (!strcmp(boardnum, "44")) { /* Trendware TEW-411BRP+ */
627 return &platforms[TEW411BRPP];
628 }
629
630 /* not found */
631 return NULL;
632 }
633
634 static void register_buttons(struct button_t *b)
635 {
636 for (; b->name; b++)
637 platform.button_mask |= b->gpio;
638
639 platform.button_mask &= ~gpiomask;
640
641 gpio_outen(platform.button_mask, 0);
642 gpio_control(platform.button_mask, 0);
643 platform.button_polarity = gpio_in() & platform.button_mask;
644 gpio_intpolarity(platform.button_mask, platform.button_polarity);
645 gpio_intmask(platform.button_mask, platform.button_mask);
646
647 gpio_set_irqenable(1, button_handler);
648 }
649
650 static void unregister_buttons(struct button_t *b)
651 {
652 gpio_intmask(platform.button_mask, 0);
653
654 gpio_set_irqenable(0, button_handler);
655 }
656
657 static void hotplug_button(struct event_t *event)
658 {
659 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
660 call_usermodehelper (event->argv[0], event->argv, event->envp, 1);
661 #else
662 call_usermodehelper (event->argv[0], event->argv, event->envp);
663 #endif
664 kfree(event);
665 }
666
667 static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
668 {
669 struct button_t *b;
670 u32 in, changed;
671
672 in = gpio_in() & platform.button_mask;
673 gpio_intpolarity(platform.button_mask, in);
674 changed = platform.button_polarity ^ in;
675 platform.button_polarity = in;
676
677 changed &= ~gpio_outen(0, 0);
678
679 for (b = platform.buttons; b->name; b++) {
680 struct event_t *event;
681
682 if (!(b->gpio & changed)) continue;
683
684 b->pressed ^= 1;
685
686 if ((event = (struct event_t *)kmalloc (sizeof(struct event_t), GFP_ATOMIC))) {
687 int i;
688 char *scratch = event->buf;
689
690 i = 0;
691 event->argv[i++] = hotplug_path;
692 event->argv[i++] = "button";
693 event->argv[i] = 0;
694
695 i = 0;
696 event->envp[i++] = "HOME=/";
697 event->envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
698 event->envp[i++] = scratch;
699 scratch += sprintf (scratch, "ACTION=%s", b->pressed?"pressed":"released") + 1;
700 event->envp[i++] = scratch;
701 scratch += sprintf (scratch, "BUTTON=%s", b->name) + 1;
702 event->envp[i++] = scratch;
703 scratch += sprintf (scratch, "SEEN=%ld", (jiffies - b->seen)/HZ) + 1;
704 event->envp[i] = 0;
705
706 INIT_WORK(&event->wq, (void *)(void *)hotplug_button, (void *)event);
707 schedule_work(&event->wq);
708 }
709
710 b->seen = jiffies;
711 }
712 return IRQ_HANDLED;
713 }
714
715 static void register_leds(struct led_t *l)
716 {
717 struct proc_dir_entry *p;
718 u32 mask = 0;
719 u32 val = 0;
720
721 leds = proc_mkdir("led", diag);
722 if (!leds)
723 return;
724
725 for(; l->name; l++) {
726 if (l->gpio & gpiomask)
727 continue;
728
729 if (l->gpio & GPIO_TYPE_EXTIF) {
730 l->state = 0;
731 set_led_extif(l);
732 } else {
733 mask |= l->gpio;
734 val |= (l->polarity == NORMAL)?0:l->gpio;
735 }
736
737 if ((p = create_proc_entry(l->name, S_IRUSR, leds))) {
738 l->proc.type = PROC_LED;
739 l->proc.ptr = l;
740 p->data = (void *) &l->proc;
741 p->proc_fops = &diag_proc_fops;
742 }
743 }
744
745 gpio_outen(mask, mask);
746 gpio_control(mask, 0);
747 gpio_out(mask, val);
748 }
749
750 static void unregister_leds(struct led_t *l)
751 {
752 for(; l->name; l++)
753 remove_proc_entry(l->name, leds);
754
755 remove_proc_entry("led", diag);
756 }
757
758 static void set_led_extif(struct led_t *led)
759 {
760 gpio_set_extif(led->gpio, led->state);
761 }
762
763 static void led_flash(unsigned long dummy) {
764 struct led_t *l;
765 u32 mask = 0;
766 u8 extif_blink = 0;
767
768 for (l = platform.leds; l->name; l++) {
769 if (l->flash) {
770 if (l->gpio & GPIO_TYPE_EXTIF) {
771 extif_blink = 1;
772 l->state = !l->state;
773 set_led_extif(l);
774 } else {
775 mask |= l->gpio;
776 }
777 }
778 }
779
780 mask &= ~gpiomask;
781 if (mask) {
782 u32 val = ~gpio_in();
783
784 gpio_outen(mask, mask);
785 gpio_control(mask, 0);
786 gpio_out(mask, val);
787 }
788 if (mask || extif_blink) {
789 mod_timer(&led_timer, jiffies + FLASH_TIME);
790 }
791 }
792
793 static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
794 {
795 #ifdef LINUX_2_4
796 struct inode *inode = file->f_dentry->d_inode;
797 struct proc_dir_entry *dent = inode->u.generic_ip;
798 #else
799 struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
800 #endif
801 char *page;
802 int len = 0;
803
804 if ((page = kmalloc(1024, GFP_KERNEL)) == NULL)
805 return -ENOBUFS;
806
807 if (dent->data != NULL) {
808 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
809 switch (handler->type) {
810 case PROC_LED: {
811 struct led_t * led = (struct led_t *) handler->ptr;
812 if (led->flash) {
813 len = sprintf(page, "f\n");
814 } else {
815 if (led->gpio & GPIO_TYPE_EXTIF) {
816 len = sprintf(page, "%d\n", led->state);
817 } else {
818 u32 in = (gpio_in() & led->gpio ? 1 : 0);
819 u8 p = (led->polarity == NORMAL ? 0 : 1);
820 len = sprintf(page, "%d\n", ((in ^ p) ? 1 : 0));
821 }
822 }
823 break;
824 }
825 case PROC_MODEL:
826 len = sprintf(page, "%s\n", platform.name);
827 break;
828 case PROC_GPIOMASK:
829 len = sprintf(page, "0x%04x\n", gpiomask);
830 break;
831 }
832 }
833 len += 1;
834
835 if (*ppos < len) {
836 len = min_t(int, len - *ppos, count);
837 if (copy_to_user(buf, (page + *ppos), len)) {
838 kfree(page);
839 return -EFAULT;
840 }
841 *ppos += len;
842 } else {
843 len = 0;
844 }
845
846 return len;
847 }
848
849
850 static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
851 {
852 #ifdef LINUX_2_4
853 struct inode *inode = file->f_dentry->d_inode;
854 struct proc_dir_entry *dent = inode->u.generic_ip;
855 #else
856 struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
857 #endif
858 char *page;
859 int ret = -EINVAL;
860
861 if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
862 return -ENOBUFS;
863
864 if (copy_from_user(page, buf, count)) {
865 kfree(page);
866 return -EINVAL;
867 }
868 page[count] = 0;
869
870 if (dent->data != NULL) {
871 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
872 switch (handler->type) {
873 case PROC_LED: {
874 struct led_t *led = (struct led_t *) handler->ptr;
875 int p = (led->polarity == NORMAL ? 0 : 1);
876
877 if (page[0] == 'f') {
878 led->flash = 1;
879 led_flash(0);
880 } else {
881 led->flash = 0;
882 if (led->gpio & GPIO_TYPE_EXTIF) {
883 led->state = p ^ ((page[0] == '1') ? 1 : 0);
884 set_led_extif(led);
885 } else {
886 gpio_outen(led->gpio, led->gpio);
887 gpio_control(led->gpio, 0);
888 gpio_out(led->gpio, ((p ^ (page[0] == '1')) ? led->gpio : 0));
889 }
890 }
891 break;
892 }
893 case PROC_GPIOMASK:
894 gpiomask = simple_strtoul(page, NULL, 0);
895
896 if (platform.buttons) {
897 unregister_buttons(platform.buttons);
898 register_buttons(platform.buttons);
899 }
900
901 if (platform.leds) {
902 unregister_leds(platform.leds);
903 register_leds(platform.leds);
904 }
905 break;
906 }
907 ret = count;
908 }
909
910 kfree(page);
911 return ret;
912 }
913
914 static int __init diag_init(void)
915 {
916 static struct proc_dir_entry *p;
917 static struct platform_t *detected;
918
919 detected = platform_detect();
920 if (!detected) {
921 printk(MODULE_NAME ": Router model not detected.\n");
922 return -ENODEV;
923 }
924 memcpy(&platform, detected, sizeof(struct platform_t));
925
926 printk(MODULE_NAME ": Detected '%s'\n", platform.name);
927 if (platform.platform_init != NULL) {
928 platform.platform_init();
929 }
930
931 if (!(diag = proc_mkdir("diag", NULL))) {
932 printk(MODULE_NAME ": proc_mkdir on /proc/diag failed\n");
933 return -EINVAL;
934 }
935
936 if ((p = create_proc_entry("model", S_IRUSR, diag))) {
937 p->data = (void *) &proc_model;
938 p->proc_fops = &diag_proc_fops;
939 }
940
941 if ((p = create_proc_entry("gpiomask", S_IRUSR | S_IWUSR, diag))) {
942 p->data = (void *) &proc_gpiomask;
943 p->proc_fops = &diag_proc_fops;
944 }
945
946 if (platform.buttons)
947 register_buttons(platform.buttons);
948
949 if (platform.leds)
950 register_leds(platform.leds);
951
952 return 0;
953 }
954
955 static void __exit diag_exit(void)
956 {
957
958 del_timer(&led_timer);
959
960 if (platform.buttons)
961 unregister_buttons(platform.buttons);
962
963 if (platform.leds)
964 unregister_leds(platform.leds);
965
966 remove_proc_entry("model", diag);
967 remove_proc_entry("gpiomask", diag);
968 remove_proc_entry("diag", NULL);
969 }
970
971 module_init(diag_init);
972 module_exit(diag_exit);
973
974 MODULE_AUTHOR("Mike Baker, Felix Fietkau / OpenWrt.org");
975 MODULE_LICENSE("GPL");
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