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improve accuracy of the diag detection of the wrt54g3g
[openwrt/staging/yousong.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 BUFFALO_UNKNOWN,
73 BUFFALO_UNKNOWN_4710,
74
75 /* Siemens */
76 SE505V1,
77 SE505V2,
78
79 /* US Robotics */
80 USR5461,
81
82 /* Dell */
83 TM2300,
84
85 /* Motorola */
86 WE800G,
87 WR850GV1,
88 WR850GV2V3,
89
90 /* Belkin */
91 BELKIN_UNKNOWN,
92 };
93
94 static struct platform_t __initdata platforms[] = {
95 /* Linksys */
96 [WAP54GV1] = {
97 .name = "Linksys WAP54G V1",
98 .buttons = {
99 { .name = "reset", .gpio = 1 << 0 },
100 },
101 .leds = {
102 { .name = "diag", .gpio = 1 << 3 },
103 { .name = "wlan", .gpio = 1 << 4 },
104 },
105 },
106 [WAP54GV3] = {
107 .name = "Linksys WAP54G V3",
108 .buttons = {
109 /* FIXME: verify this */
110 { .name = "reset", .gpio = 1 << 7 },
111 { .name = "ses", .gpio = 1 << 0 },
112 },
113 .leds = {
114 /* FIXME: diag? */
115 { .name = "ses", .gpio = 1 << 1 },
116 },
117 },
118 [WRT54GV1] = {
119 .name = "Linksys WRT54G V1.x",
120 .buttons = {
121 { .name = "reset", .gpio = 1 << 6 },
122 },
123 .leds = {
124 { .name = "diag", .gpio = 0x13 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
125 { .name = "dmz", .gpio = 0x12 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
126 },
127 },
128 [WRT54G] = {
129 .name = "Linksys WRT54G/GS/GL",
130 .buttons = {
131 { .name = "reset", .gpio = 1 << 6 },
132 { .name = "ses", .gpio = 1 << 4 },
133 },
134 .leds = {
135 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
136 { .name = "dmz", .gpio = 1 << 7, .polarity = REVERSE },
137 { .name = "ses_white", .gpio = 1 << 2, .polarity = REVERSE },
138 { .name = "ses_orange", .gpio = 1 << 3, .polarity = REVERSE },
139 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
140 },
141 },
142 [WRTSL54GS] = {
143 .name = "Linksys WRTSL54GS",
144 .buttons = {
145 { .name = "reset", .gpio = 1 << 6 },
146 { .name = "ses", .gpio = 1 << 4 },
147 },
148 .leds = {
149 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
150 { .name = "dmz", .gpio = 1 << 7, .polarity = REVERSE },
151 { .name = "ses_white", .gpio = 1 << 5, .polarity = REVERSE },
152 { .name = "ses_orange", .gpio = 1 << 7, .polarity = REVERSE },
153 },
154 },
155 [WRT54G3G] = {
156 .name = "Linksys WRT54G3G",
157 .buttons = {
158 { .name = "reset", .gpio = 1 << 6 },
159 { .name = "3g", .gpio = 1 << 4 },
160 },
161 .leds = {
162 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
163 { .name = "dmz", .gpio = 1 << 7, .polarity = REVERSE },
164 { .name = "3g_green", .gpio = 1 << 2, .polarity = NORMAL },
165 { .name = "3g_blue", .gpio = 1 << 3, .polarity = NORMAL },
166 { .name = "3g_blink", .gpio = 1 << 5, .polarity = NORMAL },
167 },
168 },
169 /* Asus */
170 [WLHDD] = {
171 .name = "ASUS WL-HDD",
172 .buttons = {
173 { .name = "reset", .gpio = 1 << 6 },
174 },
175 .leds = {
176 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
177 },
178 },
179 [WL300G] = {
180 .name = "ASUS WL-300g",
181 .buttons = {
182 { .name = "reset", .gpio = 1 << 6 },
183 },
184 .leds = {
185 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
186 },
187 },
188 [WL500G] = {
189 .name = "ASUS WL-500g",
190 .buttons = {
191 { .name = "reset", .gpio = 1 << 6 },
192 },
193 .leds = {
194 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
195 },
196 },
197 [WL500GD] = {
198 .name = "ASUS WL-500g Deluxe",
199 .buttons = {
200 { .name = "reset", .gpio = 1 << 6 },
201 },
202 .leds = {
203 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
204 },
205 },
206 [WL500GP] = {
207 .name = "ASUS WL-500g Premium",
208 .buttons = {
209 { .name = "reset", .gpio = 1 << 0 },
210 { .name = "ses", .gpio = 1 << 4 },
211 },
212 .leds = {
213 { .name = "power", .gpio = 1 << 1, .polarity = REVERSE },
214 },
215 },
216 [ASUS_4702] = {
217 .name = "ASUS (unknown, BCM4702)",
218 .buttons = {
219 { .name = "reset", .gpio = 1 << 6 },
220 },
221 .leds = {
222 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
223 },
224 },
225 /* Buffalo */
226 [WHR_G54S] = {
227 .name = "Buffalo WHR-G54S",
228 .buttons = {
229 { .name = "reset", .gpio = 1 << 4 },
230 { .name = "bridge", .gpio = 1 << 5 },
231 { .name = "ses", .gpio = 1 << 0 },
232 },
233 .leds = {
234 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
235 { .name = "internal", .gpio = 1 << 3, .polarity = REVERSE },
236 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
237 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
238 },
239 },
240 [WBR2_G54] = {
241 .name = "Buffalo WBR2-G54",
242 /* FIXME: verify */
243 .buttons = {
244 { .name = "reset", .gpio = 1 << 7 },
245 },
246 .leds = {
247 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
248 },
249 },
250 [WHR_HP_G54] = {
251 .name = "Buffalo WHR-HP-G54",
252 .buttons = {
253 { .name = "reset", .gpio = 1 << 4 },
254 { .name = "bridge", .gpio = 1 << 5 },
255 { .name = "ses", .gpio = 1 << 0 },
256 },
257 .leds = {
258 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
259 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
260 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
261 },
262 },
263 [WHR2_A54G54] = {
264 .name = "Buffalo WHR2-A54G54",
265 .buttons = {
266 { .name = "reset", .gpio = 1 << 4 },
267 },
268 .leds = {
269 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
270 },
271 },
272 [WLA2_G54L] = {
273 .name = "Buffalo WLA2-G54L",
274 /* FIXME: verify */
275 .buttons = {
276 { .name = "reset", .gpio = 1 << 7 },
277 },
278 .leds = {
279 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
280 },
281 },
282 [BUFFALO_UNKNOWN] = {
283 .name = "Buffalo (unknown)",
284 .buttons = {
285 { .name = "reset", .gpio = 1 << 7 },
286 },
287 .leds = {
288 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
289 },
290 },
291 [BUFFALO_UNKNOWN_4710] = {
292 .name = "Buffalo (unknown, BCM4710)",
293 .buttons = {
294 { .name = "reset", .gpio = 1 << 4 },
295 },
296 .leds = {
297 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
298 },
299 },
300 /* Siemens */
301 [SE505V1] = {
302 .name = "Siemens SE505 V1",
303 .buttons = {
304 /* No usable buttons */
305 },
306 .leds = {
307 { .name = "dmz", .gpio = 1 << 4, .polarity = REVERSE },
308 { .name = "wlan", .gpio = 1 << 3, .polarity = REVERSE },
309 },
310 },
311 [SE505V2] = {
312 .name = "Siemens SE505 V2",
313 .buttons = {
314 /* No usable buttons */
315 },
316 .leds = {
317 { .name = "power", .gpio = 1 << 5, .polarity = REVERSE },
318 { .name = "dmz", .gpio = 1 << 0, .polarity = REVERSE },
319 { .name = "wlan", .gpio = 1 << 3, .polarity = REVERSE },
320 },
321 },
322 /* US Robotics */
323 [USR5461] = {
324 .name = "U.S. Robotics USR5461",
325 .buttons = {
326 /* No usable buttons */
327 },
328 .leds = {
329 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
330 { .name = "printer", .gpio = 1 << 1, .polarity = REVERSE },
331 },
332 },
333 /* Dell */
334 [TM2300] = {
335 .name = "Dell TrueMobile 2300",
336 .buttons = {
337 { .name = "reset", .gpio = 1 << 0 },
338 },
339 .leds = {
340 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
341 },
342 },
343 /* Motorola */
344 [WE800G] = {
345 .name = "Motorola WE800G",
346 .buttons = {
347 { .name = "reset", .gpio = 1 << 0 },
348 },
349 .leds = {
350 { .name = "power", .gpio = 1 << 4, .polarity = NORMAL },
351 { .name = "diag", .gpio = 1 << 2, .polarity = REVERSE },
352 { .name = "wlan_amber", .gpio = 1 << 1, .polarity = NORMAL },
353 },
354 },
355 [WR850GV1] = {
356 .name = "Motorola WR850G V1",
357 .buttons = {
358 { .name = "reset", .gpio = 1 << 0 },
359 },
360 .leds = {
361 { .name = "power", .gpio = 1 << 4, .polarity = NORMAL },
362 { .name = "diag", .gpio = 1 << 3, .polarity = REVERSE },
363 { .name = "dmz", .gpio = 1 << 6, .polarity = NORMAL },
364 { .name = "wlan_red", .gpio = 1 << 5, .polarity = REVERSE },
365 { .name = "wlan_green", .gpio = 1 << 7, .polarity = REVERSE },
366 },
367 },
368 [WR850GV2V3] = {
369 .name = "Motorola WR850G V2/V3",
370 .buttons = {
371 { .name = "reset", .gpio = 1 << 5 },
372 },
373 .leds = {
374 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
375 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
376 { .name = "dmz", .gpio = 1 << 6, .polarity = REVERSE },
377 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
378 },
379 },
380 /* Belkin */
381 [BELKIN_UNKNOWN] = {
382 .name = "Belkin (unknown)",
383 /* FIXME: verify & add detection */
384 .buttons = {
385 { .name = "reset", .gpio = 1 << 7 },
386 },
387 .leds = {
388 { .name = "power", .gpio = 1 << 5, .polarity = NORMAL },
389 { .name = "wlan", .gpio = 1 << 3, .polarity = NORMAL },
390 { .name = "connected", .gpio = 1 << 0, .polarity = NORMAL },
391 },
392 },
393 };
394
395 static struct platform_t __init *platform_detect(void)
396 {
397 char *boardnum, *boardtype, *buf;
398
399 boardnum = getvar("boardnum");
400 boardtype = getvar("boardtype");
401 if (strncmp(getvar("pmon_ver"), "CFE", 3) == 0) {
402 /* CFE based - newer hardware */
403 if (!strcmp(boardnum, "42")) { /* Linksys */
404 if (!strcmp(boardtype, "0x0101") && !strcmp(getvar("boot_ver"), "v3.6"))
405 return &platforms[WRT54G3G];
406
407 if (!strcmp(getvar("et1phyaddr"),"5") && !strcmp(getvar("et1mdcport"), "1"))
408 return &platforms[WRTSL54GS];
409
410 /* default to WRT54G */
411 return &platforms[WRT54G];
412 }
413
414 if (!strcmp(boardnum, "45")) { /* ASUS */
415 if (!strcmp(boardtype,"0x042f"))
416 return &platforms[WL500GP];
417 else
418 return &platforms[WL500GD];
419 }
420
421 if (!strcmp(boardnum, "10496"))
422 return &platforms[USR5461];
423 } else { /* PMON based - old stuff */
424 if (!strncmp(boardtype, "bcm94710dev", 11)) {
425 if (!strcmp(boardnum, "42"))
426 return &platforms[WRT54GV1];
427 if (simple_strtoul(boardnum, NULL, 0) == 2)
428 return &platforms[WAP54GV1];
429 }
430 if (!strncmp(getvar("hardware_version"), "WL500-", 6))
431 return &platforms[WL500G];
432 if (!strncmp(getvar("hardware_version"), "WL300-", 6)) {
433 /* Either WL-300g or WL-HDD, do more extensive checks */
434 if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
435 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 1))
436 return &platforms[WLHDD];
437 if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
438 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 10))
439 return &platforms[WL300G];
440 }
441
442 /* unknown asus stuff, probably bcm4702 */
443 if (!strncmp(boardnum, "asusX", 5))
444 return &platforms[ASUS_4702];
445
446 if ((simple_strtoul(getvar("GemtekPmonVer"), NULL, 0) == 9) &&
447 (simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 30)) {
448 if (!strncmp(getvar("ModelId"),"WE800G", 6))
449 return &platforms[WE800G];
450 else
451 return &platforms[WR850GV1];
452 }
453 }
454
455 if ((buf = (nvram_get("melco_id") ?: nvram_get("buffalo_id")))) {
456 /* Buffalo hardware, check id for specific hardware matches */
457 if (!strcmp(buf, "29bb0332"))
458 return &platforms[WBR2_G54];
459 if (!strcmp(buf, "29129"))
460 return &platforms[WLA2_G54L];
461 if (!strcmp(buf, "30189"))
462 return &platforms[WHR_HP_G54];
463 if (!strcmp(buf, "30182"))
464 return &platforms[WHR_G54S];
465 if (!strcmp(buf, "290441dd"))
466 return &platforms[WHR2_A54G54];
467 }
468
469 if (buf || !strcmp(boardnum, "00")) {/* probably buffalo */
470 if (!strncmp(boardtype, "bcm94710ap", 10))
471 return &platforms[BUFFALO_UNKNOWN_4710];
472 else
473 return &platforms[BUFFALO_UNKNOWN];
474 }
475
476
477 if (!strcmp(getvar("CFEver"), "MotoWRv203") ||
478 !strcmp(getvar("MOTO_BOARD_TYPE"), "WR_FEM1")) {
479
480 return &platforms[WR850GV2V3];
481 }
482
483 /* not found */
484 return NULL;
485 }
486
487 static void register_buttons(struct button_t *b)
488 {
489 for (; b->name; b++)
490 platform.button_mask |= b->gpio;
491
492 platform.button_mask &= ~gpiomask;
493
494 gpio_outen(platform.button_mask, 0);
495 gpio_control(platform.button_mask, 0);
496 platform.button_polarity = gpio_in() & platform.button_mask;
497 gpio_intpolarity(platform.button_mask, platform.button_polarity);
498 gpio_intmask(platform.button_mask, platform.button_mask);
499
500 gpio_set_irqenable(1, button_handler);
501 }
502
503 static void unregister_buttons(struct button_t *b)
504 {
505 gpio_intmask(platform.button_mask, 0);
506
507 gpio_set_irqenable(0, button_handler);
508 }
509
510 static void hotplug_button(struct event_t *event)
511 {
512 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
513 call_usermodehelper (event->argv[0], event->argv, event->envp, 1);
514 #else
515 call_usermodehelper (event->argv[0], event->argv, event->envp);
516 #endif
517 kfree(event);
518 }
519
520 static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
521 {
522 struct button_t *b;
523 u32 in, changed;
524
525 in = gpio_in() & platform.button_mask;
526 gpio_intpolarity(platform.button_mask, in);
527 changed = platform.button_polarity ^ in;
528 platform.button_polarity = in;
529
530 for (b = platform.buttons; b->name; b++) {
531 struct event_t *event;
532
533 if (!(b->gpio & changed)) continue;
534
535 b->pressed ^= 1;
536
537 if ((event = (struct event_t *)kmalloc (sizeof(struct event_t), GFP_ATOMIC))) {
538 int i;
539 char *scratch = event->buf;
540
541 i = 0;
542 event->argv[i++] = hotplug_path;
543 event->argv[i++] = "button";
544 event->argv[i] = 0;
545
546 i = 0;
547 event->envp[i++] = "HOME=/";
548 event->envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
549 event->envp[i++] = scratch;
550 scratch += sprintf (scratch, "ACTION=%s", b->pressed?"pressed":"released") + 1;
551 event->envp[i++] = scratch;
552 scratch += sprintf (scratch, "BUTTON=%s", b->name) + 1;
553 event->envp[i++] = scratch;
554 scratch += sprintf (scratch, "SEEN=%ld", (jiffies - b->seen)/HZ) + 1;
555 event->envp[i] = 0;
556
557 INIT_WORK(&event->wq, (void *)(void *)hotplug_button, (void *)event);
558 schedule_work(&event->wq);
559 }
560
561 b->seen = jiffies;
562 }
563 return IRQ_HANDLED;
564 }
565
566 static void register_leds(struct led_t *l)
567 {
568 struct proc_dir_entry *p;
569 u32 mask = 0;
570 u32 val = 0;
571
572 leds = proc_mkdir("led", diag);
573 if (!leds)
574 return;
575
576 for(; l->name; l++) {
577 if (l->gpio & gpiomask)
578 continue;
579
580 if (l->gpio & GPIO_TYPE_EXTIF) {
581 l->state = 0;
582 set_led_extif(l);
583 } else {
584 mask |= l->gpio;
585 val |= (l->polarity == NORMAL)?0:l->gpio;
586 }
587
588 if ((p = create_proc_entry(l->name, S_IRUSR, leds))) {
589 l->proc.type = PROC_LED;
590 l->proc.ptr = l;
591 p->data = (void *) &l->proc;
592 p->proc_fops = &diag_proc_fops;
593 }
594 }
595
596 gpio_outen(mask, mask);
597 gpio_control(mask, 0);
598 gpio_out(mask, val);
599 }
600
601 static void unregister_leds(struct led_t *l)
602 {
603 for(; l->name; l++)
604 remove_proc_entry(l->name, leds);
605
606 remove_proc_entry("led", diag);
607 }
608
609 static void set_led_extif(struct led_t *led)
610 {
611 gpio_set_extif(led->gpio, led->state);
612 }
613
614 static void led_flash(unsigned long dummy) {
615 struct led_t *l;
616 u32 mask = 0;
617 u8 extif_blink = 0;
618
619 for (l = platform.leds; l->name; l++) {
620 if (l->flash) {
621 if (l->gpio & GPIO_TYPE_EXTIF) {
622 extif_blink = 1;
623 l->state = !l->state;
624 set_led_extif(l);
625 } else {
626 mask |= l->gpio;
627 }
628 }
629 }
630
631 mask &= ~gpiomask;
632 if (mask) {
633 u32 val = ~gpio_in();
634
635 gpio_outen(mask, mask);
636 gpio_control(mask, 0);
637 gpio_out(mask, val);
638 }
639 if (mask || extif_blink) {
640 mod_timer(&led_timer, jiffies + FLASH_TIME);
641 }
642 }
643
644 static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
645 {
646 #ifdef LINUX_2_4
647 struct inode *inode = file->f_dentry->d_inode;
648 struct proc_dir_entry *dent = inode->u.generic_ip;
649 #else
650 struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
651 #endif
652 char *page;
653 int len = 0;
654
655 if ((page = kmalloc(1024, GFP_KERNEL)) == NULL)
656 return -ENOBUFS;
657
658 if (dent->data != NULL) {
659 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
660 switch (handler->type) {
661 case PROC_LED: {
662 struct led_t * led = (struct led_t *) handler->ptr;
663 if (led->flash) {
664 len = sprintf(page, "f\n");
665 } else {
666 if (led->gpio & GPIO_TYPE_EXTIF) {
667 len = sprintf(page, "%d\n", led->state);
668 } else {
669 u32 in = (gpio_in() & led->gpio ? 1 : 0);
670 u8 p = (led->polarity == NORMAL ? 0 : 1);
671 len = sprintf(page, "%d\n", ((in ^ p) ? 1 : 0));
672 }
673 }
674 break;
675 }
676 case PROC_MODEL:
677 len = sprintf(page, "%s\n", platform.name);
678 break;
679 case PROC_GPIOMASK:
680 len = sprintf(page, "0x%04x\n", gpiomask);
681 break;
682 }
683 }
684 len += 1;
685
686 if (*ppos < len) {
687 len = min_t(int, len - *ppos, count);
688 if (copy_to_user(buf, (page + *ppos), len)) {
689 kfree(page);
690 return -EFAULT;
691 }
692 *ppos += len;
693 } else {
694 len = 0;
695 }
696
697 return len;
698 }
699
700
701 static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
702 {
703 #ifdef LINUX_2_4
704 struct inode *inode = file->f_dentry->d_inode;
705 struct proc_dir_entry *dent = inode->u.generic_ip;
706 #else
707 struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
708 #endif
709 char *page;
710 int ret = -EINVAL;
711
712 if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
713 return -ENOBUFS;
714
715 if (copy_from_user(page, buf, count)) {
716 kfree(page);
717 return -EINVAL;
718 }
719 page[count] = 0;
720
721 if (dent->data != NULL) {
722 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
723 switch (handler->type) {
724 case PROC_LED: {
725 struct led_t *led = (struct led_t *) handler->ptr;
726 int p = (led->polarity == NORMAL ? 0 : 1);
727
728 if (page[0] == 'f') {
729 led->flash = 1;
730 led_flash(0);
731 } else {
732 led->flash = 0;
733 if (led->gpio & GPIO_TYPE_EXTIF) {
734 led->state = p ^ ((page[0] == '1') ? 1 : 0);
735 set_led_extif(led);
736 } else {
737 gpio_outen(led->gpio, led->gpio);
738 gpio_control(led->gpio, 0);
739 gpio_out(led->gpio, ((p ^ (page[0] == '1')) ? led->gpio : 0));
740 }
741 }
742 break;
743 }
744 case PROC_GPIOMASK:
745 gpiomask = simple_strtoul(page, NULL, 0);
746
747 if (platform.buttons) {
748 unregister_buttons(platform.buttons);
749 register_buttons(platform.buttons);
750 }
751
752 if (platform.leds) {
753 unregister_leds(platform.leds);
754 register_leds(platform.leds);
755 }
756 break;
757 }
758 ret = count;
759 }
760
761 kfree(page);
762 return ret;
763 }
764
765 static int __init diag_init(void)
766 {
767 static struct proc_dir_entry *p;
768 static struct platform_t *detected;
769
770 detected = platform_detect();
771 if (!detected) {
772 printk(MODULE_NAME ": Router model not detected.\n");
773 return -ENODEV;
774 }
775 memcpy(&platform, detected, sizeof(struct platform_t));
776
777 printk(MODULE_NAME ": Detected '%s'\n", platform.name);
778
779 if (!(diag = proc_mkdir("diag", NULL))) {
780 printk(MODULE_NAME ": proc_mkdir on /proc/diag failed\n");
781 return -EINVAL;
782 }
783
784 if ((p = create_proc_entry("model", S_IRUSR, diag))) {
785 p->data = (void *) &proc_model;
786 p->proc_fops = &diag_proc_fops;
787 }
788
789 if ((p = create_proc_entry("gpiomask", S_IRUSR | S_IWUSR, diag))) {
790 p->data = (void *) &proc_gpiomask;
791 p->proc_fops = &diag_proc_fops;
792 }
793
794 if (platform.buttons)
795 register_buttons(platform.buttons);
796
797 if (platform.leds)
798 register_leds(platform.leds);
799
800 return 0;
801 }
802
803 static void __exit diag_exit(void)
804 {
805
806 del_timer(&led_timer);
807
808 if (platform.buttons)
809 unregister_buttons(platform.buttons);
810
811 if (platform.leds)
812 unregister_leds(platform.leds);
813
814 remove_proc_entry("model", diag);
815 remove_proc_entry("gpiomask", diag);
816 remove_proc_entry("diag", NULL);
817 }
818
819 module_init(diag_init);
820 module_exit(diag_exit);
821
822 MODULE_AUTHOR("Mike Baker, Felix Fietkau / OpenWrt.org");
823 MODULE_LICENSE("GPL");
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