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[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
58 /* ASUS */
59 WLHDD,
60 WL300G,
61 WL500G,
62 WL500GD,
63 WL500GP,
64 ASUS_4702,
65
66 /* Buffalo */
67 WBR2_G54,
68 WHR_G54S,
69 WHR_HP_G54,
70 WHR2_A54G54,
71 WLA2_G54L,
72 WZR_RS_G54,
73 WZR_RS_G54HP,
74 BUFFALO_UNKNOWN,
75 BUFFALO_UNKNOWN_4710,
76
77 /* Siemens */
78 SE505V1,
79 SE505V2,
80
81 /* US Robotics */
82 USR5461,
83
84 /* Dell */
85 TM2300,
86
87 /* Motorola */
88 WE800G,
89 WR850GV1,
90 WR850GV2V3,
91
92 /* Belkin */
93 BELKIN_UNKNOWN,
94 };
95
96 static struct platform_t __initdata platforms[] = {
97 /* Linksys */
98 [WAP54GV1] = {
99 .name = "Linksys WAP54G V1",
100 .buttons = {
101 { .name = "reset", .gpio = 1 << 0 },
102 },
103 .leds = {
104 { .name = "diag", .gpio = 1 << 3 },
105 { .name = "wlan", .gpio = 1 << 4 },
106 },
107 },
108 [WAP54GV3] = {
109 .name = "Linksys WAP54G V3",
110 .buttons = {
111 /* FIXME: verify this */
112 { .name = "reset", .gpio = 1 << 7 },
113 { .name = "ses", .gpio = 1 << 0 },
114 },
115 .leds = {
116 /* FIXME: diag? */
117 { .name = "ses", .gpio = 1 << 1 },
118 },
119 },
120 [WRT54GV1] = {
121 .name = "Linksys WRT54G V1.x",
122 .buttons = {
123 { .name = "reset", .gpio = 1 << 6 },
124 },
125 .leds = {
126 { .name = "diag", .gpio = 0x13 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
127 { .name = "dmz", .gpio = 0x12 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
128 },
129 },
130 [WRT54G] = {
131 .name = "Linksys WRT54G/GS/GL",
132 .buttons = {
133 { .name = "reset", .gpio = 1 << 6 },
134 { .name = "ses", .gpio = 1 << 4 },
135 },
136 .leds = {
137 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
138 { .name = "dmz", .gpio = 1 << 7, .polarity = REVERSE },
139 { .name = "ses_white", .gpio = 1 << 2, .polarity = REVERSE },
140 { .name = "ses_orange", .gpio = 1 << 3, .polarity = REVERSE },
141 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
142 },
143 },
144 [WRTSL54GS] = {
145 .name = "Linksys WRTSL54GS",
146 .buttons = {
147 { .name = "reset", .gpio = 1 << 6 },
148 { .name = "ses", .gpio = 1 << 4 },
149 },
150 .leds = {
151 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
152 { .name = "dmz", .gpio = 1 << 0, .polarity = REVERSE },
153 { .name = "ses_white", .gpio = 1 << 5, .polarity = REVERSE },
154 { .name = "ses_orange", .gpio = 1 << 7, .polarity = REVERSE },
155 },
156 },
157 [WRT54G3G] = {
158 .name = "Linksys WRT54G3G",
159 .buttons = {
160 { .name = "reset", .gpio = 1 << 6 },
161 { .name = "3g", .gpio = 1 << 4 },
162 },
163 .leds = {
164 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
165 { .name = "dmz", .gpio = 1 << 7, .polarity = REVERSE },
166 { .name = "3g_green", .gpio = 1 << 2, .polarity = NORMAL },
167 { .name = "3g_blue", .gpio = 1 << 3, .polarity = NORMAL },
168 { .name = "3g_blink", .gpio = 1 << 5, .polarity = NORMAL },
169 },
170 },
171 /* Asus */
172 [WLHDD] = {
173 .name = "ASUS WL-HDD",
174 .buttons = {
175 { .name = "reset", .gpio = 1 << 6 },
176 },
177 .leds = {
178 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
179 },
180 },
181 [WL300G] = {
182 .name = "ASUS WL-300g",
183 .buttons = {
184 { .name = "reset", .gpio = 1 << 6 },
185 },
186 .leds = {
187 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
188 },
189 },
190 [WL500G] = {
191 .name = "ASUS WL-500g",
192 .buttons = {
193 { .name = "reset", .gpio = 1 << 6 },
194 },
195 .leds = {
196 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
197 },
198 },
199 [WL500GD] = {
200 .name = "ASUS WL-500g Deluxe",
201 .buttons = {
202 { .name = "reset", .gpio = 1 << 6 },
203 },
204 .leds = {
205 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
206 },
207 },
208 [WL500GP] = {
209 .name = "ASUS WL-500g Premium",
210 .buttons = {
211 { .name = "reset", .gpio = 1 << 0 },
212 { .name = "ses", .gpio = 1 << 4 },
213 },
214 .leds = {
215 { .name = "power", .gpio = 1 << 1, .polarity = REVERSE },
216 },
217 },
218 [ASUS_4702] = {
219 .name = "ASUS (unknown, BCM4702)",
220 .buttons = {
221 { .name = "reset", .gpio = 1 << 6 },
222 },
223 .leds = {
224 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
225 },
226 },
227 /* Buffalo */
228 [WHR_G54S] = {
229 .name = "Buffalo WHR-G54S",
230 .buttons = {
231 { .name = "reset", .gpio = 1 << 4 },
232 { .name = "bridge", .gpio = 1 << 5 },
233 { .name = "ses", .gpio = 1 << 0 },
234 },
235 .leds = {
236 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
237 { .name = "internal", .gpio = 1 << 3, .polarity = REVERSE },
238 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
239 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
240 },
241 },
242 [WBR2_G54] = {
243 .name = "Buffalo WBR2-G54",
244 /* FIXME: verify */
245 .buttons = {
246 { .name = "reset", .gpio = 1 << 7 },
247 },
248 .leds = {
249 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
250 },
251 },
252 [WHR_HP_G54] = {
253 .name = "Buffalo WHR-HP-G54",
254 .buttons = {
255 { .name = "reset", .gpio = 1 << 4 },
256 { .name = "bridge", .gpio = 1 << 5 },
257 { .name = "ses", .gpio = 1 << 0 },
258 },
259 .leds = {
260 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
261 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
262 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
263 },
264 },
265 [WHR2_A54G54] = {
266 .name = "Buffalo WHR2-A54G54",
267 .buttons = {
268 { .name = "reset", .gpio = 1 << 4 },
269 },
270 .leds = {
271 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
272 },
273 },
274 [WLA2_G54L] = {
275 .name = "Buffalo WLA2-G54L",
276 /* FIXME: verify */
277 .buttons = {
278 { .name = "reset", .gpio = 1 << 7 },
279 },
280 .leds = {
281 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
282 },
283 },
284 [WZR_RS_G54] = {
285 .name = "Buffalo WZR-RS-G54",
286 .buttons = {
287 { .name = "ses", .gpio = 1 << 0 },
288 { .name = "reset", .gpio = 1 << 4 },
289 },
290 .leds = {
291 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
292 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
293 { .name = "vpn", .gpio = 1 << 1, .polarity = REVERSE },
294 },
295 },
296 [WZR_RS_G54HP] = {
297 .name = "Buffalo WZR-RS-G54HP",
298 .buttons = {
299 { .name = "ses", .gpio = 1 << 0 },
300 { .name = "reset", .gpio = 1 << 4 },
301 },
302 .leds = {
303 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
304 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
305 { .name = "vpn", .gpio = 1 << 1, .polarity = REVERSE },
306 },
307 },
308 [BUFFALO_UNKNOWN] = {
309 .name = "Buffalo (unknown)",
310 .buttons = {
311 { .name = "reset", .gpio = 1 << 7 },
312 },
313 .leds = {
314 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
315 },
316 },
317 [BUFFALO_UNKNOWN_4710] = {
318 .name = "Buffalo (unknown, BCM4710)",
319 .buttons = {
320 { .name = "reset", .gpio = 1 << 4 },
321 },
322 .leds = {
323 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
324 },
325 },
326 /* Siemens */
327 [SE505V1] = {
328 .name = "Siemens SE505 V1",
329 .buttons = {
330 /* No usable buttons */
331 },
332 .leds = {
333 { .name = "dmz", .gpio = 1 << 4, .polarity = REVERSE },
334 { .name = "wlan", .gpio = 1 << 3, .polarity = REVERSE },
335 },
336 },
337 [SE505V2] = {
338 .name = "Siemens SE505 V2",
339 .buttons = {
340 /* No usable buttons */
341 },
342 .leds = {
343 { .name = "power", .gpio = 1 << 5, .polarity = REVERSE },
344 { .name = "dmz", .gpio = 1 << 0, .polarity = REVERSE },
345 { .name = "wlan", .gpio = 1 << 3, .polarity = REVERSE },
346 },
347 },
348 /* US Robotics */
349 [USR5461] = {
350 .name = "U.S. Robotics USR5461",
351 .buttons = {
352 /* No usable buttons */
353 },
354 .leds = {
355 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
356 { .name = "printer", .gpio = 1 << 1, .polarity = REVERSE },
357 },
358 },
359 /* Dell */
360 [TM2300] = {
361 .name = "Dell TrueMobile 2300",
362 .buttons = {
363 { .name = "reset", .gpio = 1 << 0 },
364 },
365 .leds = {
366 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
367 },
368 },
369 /* Motorola */
370 [WE800G] = {
371 .name = "Motorola WE800G",
372 .buttons = {
373 { .name = "reset", .gpio = 1 << 0 },
374 },
375 .leds = {
376 { .name = "power", .gpio = 1 << 4, .polarity = NORMAL },
377 { .name = "diag", .gpio = 1 << 2, .polarity = REVERSE },
378 { .name = "wlan_amber", .gpio = 1 << 1, .polarity = NORMAL },
379 },
380 },
381 [WR850GV1] = {
382 .name = "Motorola WR850G V1",
383 .buttons = {
384 { .name = "reset", .gpio = 1 << 0 },
385 },
386 .leds = {
387 { .name = "power", .gpio = 1 << 4, .polarity = NORMAL },
388 { .name = "diag", .gpio = 1 << 3, .polarity = REVERSE },
389 { .name = "dmz", .gpio = 1 << 6, .polarity = NORMAL },
390 { .name = "wlan_red", .gpio = 1 << 5, .polarity = REVERSE },
391 { .name = "wlan_green", .gpio = 1 << 7, .polarity = REVERSE },
392 },
393 },
394 [WR850GV2V3] = {
395 .name = "Motorola WR850G V2/V3",
396 .buttons = {
397 { .name = "reset", .gpio = 1 << 5 },
398 },
399 .leds = {
400 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
401 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
402 { .name = "dmz", .gpio = 1 << 6, .polarity = REVERSE },
403 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
404 },
405 },
406 /* Belkin */
407 [BELKIN_UNKNOWN] = {
408 .name = "Belkin (unknown)",
409 /* FIXME: verify & add detection */
410 .buttons = {
411 { .name = "reset", .gpio = 1 << 7 },
412 },
413 .leds = {
414 { .name = "power", .gpio = 1 << 5, .polarity = NORMAL },
415 { .name = "wlan", .gpio = 1 << 3, .polarity = NORMAL },
416 { .name = "connected", .gpio = 1 << 0, .polarity = NORMAL },
417 },
418 },
419 };
420
421 static struct platform_t __init *platform_detect(void)
422 {
423 char *boardnum, *boardtype, *buf;
424
425 boardnum = getvar("boardnum");
426 boardtype = getvar("boardtype");
427 if (strncmp(getvar("pmon_ver"), "CFE", 3) == 0) {
428 /* CFE based - newer hardware */
429 if (!strcmp(boardnum, "42")) { /* Linksys */
430 if (!strcmp(boardtype, "0x0101") && !strcmp(getvar("boot_ver"), "v3.6"))
431 return &platforms[WRT54G3G];
432
433 if (!strcmp(getvar("et1phyaddr"),"5") && !strcmp(getvar("et1mdcport"), "1"))
434 return &platforms[WRTSL54GS];
435
436 /* default to WRT54G */
437 return &platforms[WRT54G];
438 }
439
440 if (!strcmp(boardnum, "45")) { /* ASUS */
441 if (!strcmp(boardtype,"0x042f"))
442 return &platforms[WL500GP];
443 else
444 return &platforms[WL500GD];
445 }
446
447 if (!strcmp(boardnum, "10496"))
448 return &platforms[USR5461];
449 } else { /* PMON based - old stuff */
450 if ((simple_strtoul(getvar("GemtekPmonVer"), NULL, 0) == 9) &&
451 (simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 30)) {
452 if (!strncmp(getvar("ModelId"),"WE800G", 6))
453 return &platforms[WE800G];
454 else
455 return &platforms[WR850GV1];
456 }
457 if (!strncmp(boardtype, "bcm94710dev", 11)) {
458 if (!strcmp(boardnum, "42"))
459 return &platforms[WRT54GV1];
460 if (simple_strtoul(boardnum, NULL, 0) == 2)
461 return &platforms[WAP54GV1];
462 }
463 if (!strncmp(getvar("hardware_version"), "WL500-", 6))
464 return &platforms[WL500G];
465 if (!strncmp(getvar("hardware_version"), "WL300-", 6)) {
466 /* Either WL-300g or WL-HDD, do more extensive checks */
467 if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
468 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 1))
469 return &platforms[WLHDD];
470 if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
471 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 10))
472 return &platforms[WL300G];
473 }
474
475 /* unknown asus stuff, probably bcm4702 */
476 if (!strncmp(boardnum, "asusX", 5))
477 return &platforms[ASUS_4702];
478 }
479
480 if ((buf = (nvram_get("melco_id") ?: nvram_get("buffalo_id")))) {
481 /* Buffalo hardware, check id for specific hardware matches */
482 if (!strcmp(buf, "29bb0332"))
483 return &platforms[WBR2_G54];
484 if (!strcmp(buf, "29129"))
485 return &platforms[WLA2_G54L];
486 if (!strcmp(buf, "30189"))
487 return &platforms[WHR_HP_G54];
488 if (!strcmp(buf, "30182"))
489 return &platforms[WHR_G54S];
490 if (!strcmp(buf, "290441dd"))
491 return &platforms[WHR2_A54G54];
492 if (!strcmp(buf, "30083"))
493 return &platforms[WZR_RS_G54];
494 if (!strcmp(buf, "30103"))
495 return &platforms[WZR_RS_G54HP];
496 }
497
498 if (buf || !strcmp(boardnum, "00")) {/* probably buffalo */
499 if (!strncmp(boardtype, "bcm94710ap", 10))
500 return &platforms[BUFFALO_UNKNOWN_4710];
501 else
502 return &platforms[BUFFALO_UNKNOWN];
503 }
504
505
506 if (!strcmp(getvar("CFEver"), "MotoWRv203") ||
507 !strcmp(getvar("MOTO_BOARD_TYPE"), "WR_FEM1")) {
508
509 return &platforms[WR850GV2V3];
510 }
511
512 /* not found */
513 return NULL;
514 }
515
516 static void register_buttons(struct button_t *b)
517 {
518 for (; b->name; b++)
519 platform.button_mask |= b->gpio;
520
521 platform.button_mask &= ~gpiomask;
522
523 gpio_outen(platform.button_mask, 0);
524 gpio_control(platform.button_mask, 0);
525 platform.button_polarity = gpio_in() & platform.button_mask;
526 gpio_intpolarity(platform.button_mask, platform.button_polarity);
527 gpio_intmask(platform.button_mask, platform.button_mask);
528
529 gpio_set_irqenable(1, button_handler);
530 }
531
532 static void unregister_buttons(struct button_t *b)
533 {
534 gpio_intmask(platform.button_mask, 0);
535
536 gpio_set_irqenable(0, button_handler);
537 }
538
539 static void hotplug_button(struct event_t *event)
540 {
541 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
542 call_usermodehelper (event->argv[0], event->argv, event->envp, 1);
543 #else
544 call_usermodehelper (event->argv[0], event->argv, event->envp);
545 #endif
546 kfree(event);
547 }
548
549 static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
550 {
551 struct button_t *b;
552 u32 in, changed;
553
554 in = gpio_in() & platform.button_mask;
555 gpio_intpolarity(platform.button_mask, in);
556 changed = platform.button_polarity ^ in;
557 platform.button_polarity = in;
558
559 changed &= ~gpio_outen(0, 0);
560
561 for (b = platform.buttons; b->name; b++) {
562 struct event_t *event;
563
564 if (!(b->gpio & changed)) continue;
565
566 b->pressed ^= 1;
567
568 if ((event = (struct event_t *)kmalloc (sizeof(struct event_t), GFP_ATOMIC))) {
569 int i;
570 char *scratch = event->buf;
571
572 i = 0;
573 event->argv[i++] = hotplug_path;
574 event->argv[i++] = "button";
575 event->argv[i] = 0;
576
577 i = 0;
578 event->envp[i++] = "HOME=/";
579 event->envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
580 event->envp[i++] = scratch;
581 scratch += sprintf (scratch, "ACTION=%s", b->pressed?"pressed":"released") + 1;
582 event->envp[i++] = scratch;
583 scratch += sprintf (scratch, "BUTTON=%s", b->name) + 1;
584 event->envp[i++] = scratch;
585 scratch += sprintf (scratch, "SEEN=%ld", (jiffies - b->seen)/HZ) + 1;
586 event->envp[i] = 0;
587
588 INIT_WORK(&event->wq, (void *)(void *)hotplug_button, (void *)event);
589 schedule_work(&event->wq);
590 }
591
592 b->seen = jiffies;
593 }
594 return IRQ_HANDLED;
595 }
596
597 static void register_leds(struct led_t *l)
598 {
599 struct proc_dir_entry *p;
600 u32 mask = 0;
601 u32 val = 0;
602
603 leds = proc_mkdir("led", diag);
604 if (!leds)
605 return;
606
607 for(; l->name; l++) {
608 if (l->gpio & gpiomask)
609 continue;
610
611 if (l->gpio & GPIO_TYPE_EXTIF) {
612 l->state = 0;
613 set_led_extif(l);
614 } else {
615 mask |= l->gpio;
616 val |= (l->polarity == NORMAL)?0:l->gpio;
617 }
618
619 if ((p = create_proc_entry(l->name, S_IRUSR, leds))) {
620 l->proc.type = PROC_LED;
621 l->proc.ptr = l;
622 p->data = (void *) &l->proc;
623 p->proc_fops = &diag_proc_fops;
624 }
625 }
626
627 gpio_outen(mask, mask);
628 gpio_control(mask, 0);
629 gpio_out(mask, val);
630 }
631
632 static void unregister_leds(struct led_t *l)
633 {
634 for(; l->name; l++)
635 remove_proc_entry(l->name, leds);
636
637 remove_proc_entry("led", diag);
638 }
639
640 static void set_led_extif(struct led_t *led)
641 {
642 gpio_set_extif(led->gpio, led->state);
643 }
644
645 static void led_flash(unsigned long dummy) {
646 struct led_t *l;
647 u32 mask = 0;
648 u8 extif_blink = 0;
649
650 for (l = platform.leds; l->name; l++) {
651 if (l->flash) {
652 if (l->gpio & GPIO_TYPE_EXTIF) {
653 extif_blink = 1;
654 l->state = !l->state;
655 set_led_extif(l);
656 } else {
657 mask |= l->gpio;
658 }
659 }
660 }
661
662 mask &= ~gpiomask;
663 if (mask) {
664 u32 val = ~gpio_in();
665
666 gpio_outen(mask, mask);
667 gpio_control(mask, 0);
668 gpio_out(mask, val);
669 }
670 if (mask || extif_blink) {
671 mod_timer(&led_timer, jiffies + FLASH_TIME);
672 }
673 }
674
675 static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
676 {
677 #ifdef LINUX_2_4
678 struct inode *inode = file->f_dentry->d_inode;
679 struct proc_dir_entry *dent = inode->u.generic_ip;
680 #else
681 struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
682 #endif
683 char *page;
684 int len = 0;
685
686 if ((page = kmalloc(1024, GFP_KERNEL)) == NULL)
687 return -ENOBUFS;
688
689 if (dent->data != NULL) {
690 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
691 switch (handler->type) {
692 case PROC_LED: {
693 struct led_t * led = (struct led_t *) handler->ptr;
694 if (led->flash) {
695 len = sprintf(page, "f\n");
696 } else {
697 if (led->gpio & GPIO_TYPE_EXTIF) {
698 len = sprintf(page, "%d\n", led->state);
699 } else {
700 u32 in = (gpio_in() & led->gpio ? 1 : 0);
701 u8 p = (led->polarity == NORMAL ? 0 : 1);
702 len = sprintf(page, "%d\n", ((in ^ p) ? 1 : 0));
703 }
704 }
705 break;
706 }
707 case PROC_MODEL:
708 len = sprintf(page, "%s\n", platform.name);
709 break;
710 case PROC_GPIOMASK:
711 len = sprintf(page, "0x%04x\n", gpiomask);
712 break;
713 }
714 }
715 len += 1;
716
717 if (*ppos < len) {
718 len = min_t(int, len - *ppos, count);
719 if (copy_to_user(buf, (page + *ppos), len)) {
720 kfree(page);
721 return -EFAULT;
722 }
723 *ppos += len;
724 } else {
725 len = 0;
726 }
727
728 return len;
729 }
730
731
732 static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
733 {
734 #ifdef LINUX_2_4
735 struct inode *inode = file->f_dentry->d_inode;
736 struct proc_dir_entry *dent = inode->u.generic_ip;
737 #else
738 struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
739 #endif
740 char *page;
741 int ret = -EINVAL;
742
743 if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
744 return -ENOBUFS;
745
746 if (copy_from_user(page, buf, count)) {
747 kfree(page);
748 return -EINVAL;
749 }
750 page[count] = 0;
751
752 if (dent->data != NULL) {
753 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
754 switch (handler->type) {
755 case PROC_LED: {
756 struct led_t *led = (struct led_t *) handler->ptr;
757 int p = (led->polarity == NORMAL ? 0 : 1);
758
759 if (page[0] == 'f') {
760 led->flash = 1;
761 led_flash(0);
762 } else {
763 led->flash = 0;
764 if (led->gpio & GPIO_TYPE_EXTIF) {
765 led->state = p ^ ((page[0] == '1') ? 1 : 0);
766 set_led_extif(led);
767 } else {
768 gpio_outen(led->gpio, led->gpio);
769 gpio_control(led->gpio, 0);
770 gpio_out(led->gpio, ((p ^ (page[0] == '1')) ? led->gpio : 0));
771 }
772 }
773 break;
774 }
775 case PROC_GPIOMASK:
776 gpiomask = simple_strtoul(page, NULL, 0);
777
778 if (platform.buttons) {
779 unregister_buttons(platform.buttons);
780 register_buttons(platform.buttons);
781 }
782
783 if (platform.leds) {
784 unregister_leds(platform.leds);
785 register_leds(platform.leds);
786 }
787 break;
788 }
789 ret = count;
790 }
791
792 kfree(page);
793 return ret;
794 }
795
796 static int __init diag_init(void)
797 {
798 static struct proc_dir_entry *p;
799 static struct platform_t *detected;
800
801 detected = platform_detect();
802 if (!detected) {
803 printk(MODULE_NAME ": Router model not detected.\n");
804 return -ENODEV;
805 }
806 memcpy(&platform, detected, sizeof(struct platform_t));
807
808 printk(MODULE_NAME ": Detected '%s'\n", platform.name);
809
810 if (!(diag = proc_mkdir("diag", NULL))) {
811 printk(MODULE_NAME ": proc_mkdir on /proc/diag failed\n");
812 return -EINVAL;
813 }
814
815 if ((p = create_proc_entry("model", S_IRUSR, diag))) {
816 p->data = (void *) &proc_model;
817 p->proc_fops = &diag_proc_fops;
818 }
819
820 if ((p = create_proc_entry("gpiomask", S_IRUSR | S_IWUSR, diag))) {
821 p->data = (void *) &proc_gpiomask;
822 p->proc_fops = &diag_proc_fops;
823 }
824
825 if (platform.buttons)
826 register_buttons(platform.buttons);
827
828 if (platform.leds)
829 register_leds(platform.leds);
830
831 return 0;
832 }
833
834 static void __exit diag_exit(void)
835 {
836
837 del_timer(&led_timer);
838
839 if (platform.buttons)
840 unregister_buttons(platform.buttons);
841
842 if (platform.leds)
843 unregister_leds(platform.leds);
844
845 remove_proc_entry("model", diag);
846 remove_proc_entry("gpiomask", diag);
847 remove_proc_entry("diag", NULL);
848 }
849
850 module_init(diag_init);
851 module_exit(diag_exit);
852
853 MODULE_AUTHOR("Mike Baker, Felix Fietkau / OpenWrt.org");
854 MODULE_LICENSE("GPL");
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