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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 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 << 0, .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 ((simple_strtoul(getvar("GemtekPmonVer"), NULL, 0) == 9) &&
425 (simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 30)) {
426 if (!strncmp(getvar("ModelId"),"WE800G", 6))
427 return &platforms[WE800G];
428 else
429 return &platforms[WR850GV1];
430 }
431 if (!strncmp(boardtype, "bcm94710dev", 11)) {
432 if (!strcmp(boardnum, "42"))
433 return &platforms[WRT54GV1];
434 if (simple_strtoul(boardnum, NULL, 0) == 2)
435 return &platforms[WAP54GV1];
436 }
437 if (!strncmp(getvar("hardware_version"), "WL500-", 6))
438 return &platforms[WL500G];
439 if (!strncmp(getvar("hardware_version"), "WL300-", 6)) {
440 /* Either WL-300g or WL-HDD, do more extensive checks */
441 if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
442 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 1))
443 return &platforms[WLHDD];
444 if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
445 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 10))
446 return &platforms[WL300G];
447 }
448
449 /* unknown asus stuff, probably bcm4702 */
450 if (!strncmp(boardnum, "asusX", 5))
451 return &platforms[ASUS_4702];
452 }
453
454 if ((buf = (nvram_get("melco_id") ?: nvram_get("buffalo_id")))) {
455 /* Buffalo hardware, check id for specific hardware matches */
456 if (!strcmp(buf, "29bb0332"))
457 return &platforms[WBR2_G54];
458 if (!strcmp(buf, "29129"))
459 return &platforms[WLA2_G54L];
460 if (!strcmp(buf, "30189"))
461 return &platforms[WHR_HP_G54];
462 if (!strcmp(buf, "30182"))
463 return &platforms[WHR_G54S];
464 if (!strcmp(buf, "290441dd"))
465 return &platforms[WHR2_A54G54];
466 }
467
468 if (buf || !strcmp(boardnum, "00")) {/* probably buffalo */
469 if (!strncmp(boardtype, "bcm94710ap", 10))
470 return &platforms[BUFFALO_UNKNOWN_4710];
471 else
472 return &platforms[BUFFALO_UNKNOWN];
473 }
474
475
476 if (!strcmp(getvar("CFEver"), "MotoWRv203") ||
477 !strcmp(getvar("MOTO_BOARD_TYPE"), "WR_FEM1")) {
478
479 return &platforms[WR850GV2V3];
480 }
481
482 /* not found */
483 return NULL;
484 }
485
486 static void register_buttons(struct button_t *b)
487 {
488 for (; b->name; b++)
489 platform.button_mask |= b->gpio;
490
491 platform.button_mask &= ~gpiomask;
492
493 gpio_outen(platform.button_mask, 0);
494 gpio_control(platform.button_mask, 0);
495 platform.button_polarity = gpio_in() & platform.button_mask;
496 gpio_intpolarity(platform.button_mask, platform.button_polarity);
497 gpio_intmask(platform.button_mask, platform.button_mask);
498
499 gpio_set_irqenable(1, button_handler);
500 }
501
502 static void unregister_buttons(struct button_t *b)
503 {
504 gpio_intmask(platform.button_mask, 0);
505
506 gpio_set_irqenable(0, button_handler);
507 }
508
509 static void hotplug_button(struct event_t *event)
510 {
511 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
512 call_usermodehelper (event->argv[0], event->argv, event->envp, 1);
513 #else
514 call_usermodehelper (event->argv[0], event->argv, event->envp);
515 #endif
516 kfree(event);
517 }
518
519 static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
520 {
521 struct button_t *b;
522 u32 in, changed;
523
524 in = gpio_in() & platform.button_mask;
525 gpio_intpolarity(platform.button_mask, in);
526 changed = platform.button_polarity ^ in;
527 platform.button_polarity = in;
528
529 for (b = platform.buttons; b->name; b++) {
530 struct event_t *event;
531
532 if (!(b->gpio & changed)) continue;
533
534 b->pressed ^= 1;
535
536 if ((event = (struct event_t *)kmalloc (sizeof(struct event_t), GFP_ATOMIC))) {
537 int i;
538 char *scratch = event->buf;
539
540 i = 0;
541 event->argv[i++] = hotplug_path;
542 event->argv[i++] = "button";
543 event->argv[i] = 0;
544
545 i = 0;
546 event->envp[i++] = "HOME=/";
547 event->envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
548 event->envp[i++] = scratch;
549 scratch += sprintf (scratch, "ACTION=%s", b->pressed?"pressed":"released") + 1;
550 event->envp[i++] = scratch;
551 scratch += sprintf (scratch, "BUTTON=%s", b->name) + 1;
552 event->envp[i++] = scratch;
553 scratch += sprintf (scratch, "SEEN=%ld", (jiffies - b->seen)/HZ) + 1;
554 event->envp[i] = 0;
555
556 INIT_WORK(&event->wq, (void *)(void *)hotplug_button, (void *)event);
557 schedule_work(&event->wq);
558 }
559
560 b->seen = jiffies;
561 }
562 return IRQ_HANDLED;
563 }
564
565 static void register_leds(struct led_t *l)
566 {
567 struct proc_dir_entry *p;
568 u32 mask = 0;
569 u32 val = 0;
570
571 leds = proc_mkdir("led", diag);
572 if (!leds)
573 return;
574
575 for(; l->name; l++) {
576 if (l->gpio & gpiomask)
577 continue;
578
579 if (l->gpio & GPIO_TYPE_EXTIF) {
580 l->state = 0;
581 set_led_extif(l);
582 } else {
583 mask |= l->gpio;
584 val |= (l->polarity == NORMAL)?0:l->gpio;
585 }
586
587 if ((p = create_proc_entry(l->name, S_IRUSR, leds))) {
588 l->proc.type = PROC_LED;
589 l->proc.ptr = l;
590 p->data = (void *) &l->proc;
591 p->proc_fops = &diag_proc_fops;
592 }
593 }
594
595 gpio_outen(mask, mask);
596 gpio_control(mask, 0);
597 gpio_out(mask, val);
598 }
599
600 static void unregister_leds(struct led_t *l)
601 {
602 for(; l->name; l++)
603 remove_proc_entry(l->name, leds);
604
605 remove_proc_entry("led", diag);
606 }
607
608 static void set_led_extif(struct led_t *led)
609 {
610 gpio_set_extif(led->gpio, led->state);
611 }
612
613 static void led_flash(unsigned long dummy) {
614 struct led_t *l;
615 u32 mask = 0;
616 u8 extif_blink = 0;
617
618 for (l = platform.leds; l->name; l++) {
619 if (l->flash) {
620 if (l->gpio & GPIO_TYPE_EXTIF) {
621 extif_blink = 1;
622 l->state = !l->state;
623 set_led_extif(l);
624 } else {
625 mask |= l->gpio;
626 }
627 }
628 }
629
630 mask &= ~gpiomask;
631 if (mask) {
632 u32 val = ~gpio_in();
633
634 gpio_outen(mask, mask);
635 gpio_control(mask, 0);
636 gpio_out(mask, val);
637 }
638 if (mask || extif_blink) {
639 mod_timer(&led_timer, jiffies + FLASH_TIME);
640 }
641 }
642
643 static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
644 {
645 #ifdef LINUX_2_4
646 struct inode *inode = file->f_dentry->d_inode;
647 struct proc_dir_entry *dent = inode->u.generic_ip;
648 #else
649 struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
650 #endif
651 char *page;
652 int len = 0;
653
654 if ((page = kmalloc(1024, GFP_KERNEL)) == NULL)
655 return -ENOBUFS;
656
657 if (dent->data != NULL) {
658 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
659 switch (handler->type) {
660 case PROC_LED: {
661 struct led_t * led = (struct led_t *) handler->ptr;
662 if (led->flash) {
663 len = sprintf(page, "f\n");
664 } else {
665 if (led->gpio & GPIO_TYPE_EXTIF) {
666 len = sprintf(page, "%d\n", led->state);
667 } else {
668 u32 in = (gpio_in() & led->gpio ? 1 : 0);
669 u8 p = (led->polarity == NORMAL ? 0 : 1);
670 len = sprintf(page, "%d\n", ((in ^ p) ? 1 : 0));
671 }
672 }
673 break;
674 }
675 case PROC_MODEL:
676 len = sprintf(page, "%s\n", platform.name);
677 break;
678 case PROC_GPIOMASK:
679 len = sprintf(page, "0x%04x\n", gpiomask);
680 break;
681 }
682 }
683 len += 1;
684
685 if (*ppos < len) {
686 len = min_t(int, len - *ppos, count);
687 if (copy_to_user(buf, (page + *ppos), len)) {
688 kfree(page);
689 return -EFAULT;
690 }
691 *ppos += len;
692 } else {
693 len = 0;
694 }
695
696 return len;
697 }
698
699
700 static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
701 {
702 #ifdef LINUX_2_4
703 struct inode *inode = file->f_dentry->d_inode;
704 struct proc_dir_entry *dent = inode->u.generic_ip;
705 #else
706 struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
707 #endif
708 char *page;
709 int ret = -EINVAL;
710
711 if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
712 return -ENOBUFS;
713
714 if (copy_from_user(page, buf, count)) {
715 kfree(page);
716 return -EINVAL;
717 }
718 page[count] = 0;
719
720 if (dent->data != NULL) {
721 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
722 switch (handler->type) {
723 case PROC_LED: {
724 struct led_t *led = (struct led_t *) handler->ptr;
725 int p = (led->polarity == NORMAL ? 0 : 1);
726
727 if (page[0] == 'f') {
728 led->flash = 1;
729 led_flash(0);
730 } else {
731 led->flash = 0;
732 if (led->gpio & GPIO_TYPE_EXTIF) {
733 led->state = p ^ ((page[0] == '1') ? 1 : 0);
734 set_led_extif(led);
735 } else {
736 gpio_outen(led->gpio, led->gpio);
737 gpio_control(led->gpio, 0);
738 gpio_out(led->gpio, ((p ^ (page[0] == '1')) ? led->gpio : 0));
739 }
740 }
741 break;
742 }
743 case PROC_GPIOMASK:
744 gpiomask = simple_strtoul(page, NULL, 0);
745
746 if (platform.buttons) {
747 unregister_buttons(platform.buttons);
748 register_buttons(platform.buttons);
749 }
750
751 if (platform.leds) {
752 unregister_leds(platform.leds);
753 register_leds(platform.leds);
754 }
755 break;
756 }
757 ret = count;
758 }
759
760 kfree(page);
761 return ret;
762 }
763
764 static int __init diag_init(void)
765 {
766 static struct proc_dir_entry *p;
767 static struct platform_t *detected;
768
769 detected = platform_detect();
770 if (!detected) {
771 printk(MODULE_NAME ": Router model not detected.\n");
772 return -ENODEV;
773 }
774 memcpy(&platform, detected, sizeof(struct platform_t));
775
776 printk(MODULE_NAME ": Detected '%s'\n", platform.name);
777
778 if (!(diag = proc_mkdir("diag", NULL))) {
779 printk(MODULE_NAME ": proc_mkdir on /proc/diag failed\n");
780 return -EINVAL;
781 }
782
783 if ((p = create_proc_entry("model", S_IRUSR, diag))) {
784 p->data = (void *) &proc_model;
785 p->proc_fops = &diag_proc_fops;
786 }
787
788 if ((p = create_proc_entry("gpiomask", S_IRUSR | S_IWUSR, diag))) {
789 p->data = (void *) &proc_gpiomask;
790 p->proc_fops = &diag_proc_fops;
791 }
792
793 if (platform.buttons)
794 register_buttons(platform.buttons);
795
796 if (platform.leds)
797 register_leds(platform.leds);
798
799 return 0;
800 }
801
802 static void __exit diag_exit(void)
803 {
804
805 del_timer(&led_timer);
806
807 if (platform.buttons)
808 unregister_buttons(platform.buttons);
809
810 if (platform.leds)
811 unregister_leds(platform.leds);
812
813 remove_proc_entry("model", diag);
814 remove_proc_entry("gpiomask", diag);
815 remove_proc_entry("diag", NULL);
816 }
817
818 module_init(diag_init);
819 module_exit(diag_exit);
820
821 MODULE_AUTHOR("Mike Baker, Felix Fietkau / OpenWrt.org");
822 MODULE_LICENSE("GPL");
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