2 * diag.c - GPIO interface driver for Broadcom boards
4 * Copyright (C) 2006 Mike Baker <mbm@openwrt.org>,
5 * Copyright (C) 2006-2007 Felix Fietkau <nbd@openwrt.org>
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.
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.
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.
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>
32 #include <linux/workqueue.h>
33 #include <linux/skbuff.h>
34 #include <linux/netlink.h>
36 extern struct sock *uevent_sock;
37 extern u64 uevent_next_seqnum(void);
39 #include <linux/tqueue.h>
40 #define INIT_WORK INIT_TQUEUE
41 #define schedule_work schedule_task
42 #define work_struct tq_struct
47 #define getvar(str) (nvram_get(str)?:"")
49 static int fill_event(struct event_t *);
50 static unsigned int gpiomask = 0;
51 module_param(gpiomask, int, 0644);
120 static void __init bcm4780_init(void) {
123 /* Enables GPIO 3 that controls HDD and led power on ASUS WL-700gE */
124 printk(MODULE_NAME ": Spinning up HDD and enabling leds\n");
125 gpio_outen(pin, pin);
126 gpio_control(pin, 0);
129 /* Wait 5s, so the HDD can spin up */
130 set_current_state(TASK_INTERRUPTIBLE);
131 schedule_timeout(HZ * 5);
134 static struct platform_t __initdata platforms[] = {
137 .name = "Linksys WAP54G V1",
139 { .name = "reset", .gpio = 1 << 0 },
142 { .name = "diag", .gpio = 1 << 3 },
143 { .name = "wlan", .gpio = 1 << 4 },
147 .name = "Linksys WAP54G V3",
149 /* FIXME: verify this */
150 { .name = "reset", .gpio = 1 << 7 },
151 { .name = "ses", .gpio = 1 << 0 },
155 { .name = "ses", .gpio = 1 << 1 },
159 .name = "Linksys WRT54G V1.x",
161 { .name = "reset", .gpio = 1 << 6 },
164 { .name = "diag", .gpio = 0x13 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
165 { .name = "dmz", .gpio = 0x12 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
169 .name = "Linksys WRT54G/GS/GL",
171 { .name = "reset", .gpio = 1 << 6 },
172 { .name = "ses", .gpio = 1 << 4 },
175 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
176 { .name = "dmz", .gpio = 1 << 7, .polarity = REVERSE },
177 { .name = "ses_white", .gpio = 1 << 2, .polarity = REVERSE },
178 { .name = "ses_orange", .gpio = 1 << 3, .polarity = REVERSE },
179 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
183 .name = "Linksys WRTSL54GS",
185 { .name = "reset", .gpio = 1 << 6 },
186 { .name = "ses", .gpio = 1 << 4 },
189 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
190 { .name = "dmz", .gpio = 1 << 0, .polarity = REVERSE },
191 { .name = "ses_white", .gpio = 1 << 5, .polarity = REVERSE },
192 { .name = "ses_orange", .gpio = 1 << 7, .polarity = REVERSE },
196 .name = "Linksys WRT54G3G",
198 { .name = "reset", .gpio = 1 << 6 },
199 { .name = "3g", .gpio = 1 << 4 },
202 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
203 { .name = "dmz", .gpio = 1 << 7, .polarity = REVERSE },
204 { .name = "3g_green", .gpio = 1 << 2, .polarity = NORMAL },
205 { .name = "3g_blue", .gpio = 1 << 3, .polarity = NORMAL },
206 { .name = "3g_blink", .gpio = 1 << 5, .polarity = NORMAL },
210 .name = "Linksys WRT350N",
212 { .name = "reset", .gpio = 1 << 6 },
213 { .name = "ses", .gpio = 1 << 8 },
216 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
217 { .name = "ses", .gpio = 1 << 3, .polarity = REVERSE },
222 .name = "ASUS WL-HDD",
224 { .name = "reset", .gpio = 1 << 6 },
227 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
228 { .name = "usb", .gpio = 1 << 2, .polarity = NORMAL },
232 .name = "ASUS WL-300g",
234 { .name = "reset", .gpio = 1 << 6 },
237 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
241 .name = "ASUS WL-500g",
243 { .name = "reset", .gpio = 1 << 6 },
246 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
250 .name = "ASUS WL-500g Deluxe",
252 { .name = "reset", .gpio = 1 << 6 },
255 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
259 .name = "ASUS WL-500g Premium",
261 { .name = "reset", .gpio = 1 << 0 },
262 { .name = "ses", .gpio = 1 << 4 },
265 { .name = "power", .gpio = 1 << 1, .polarity = REVERSE },
269 .name = "ASUS WL-500W",
271 { .name = "reset", .gpio = 1 << 6 },
272 { .name = "ses", .gpio = 1 << 7 },
275 { .name = "power", .gpio = 1 << 5, .polarity = REVERSE },
279 .name = "ASUS (unknown, BCM4702)",
281 { .name = "reset", .gpio = 1 << 6 },
284 { .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
288 .name = "ASUS WL-700gE",
290 { .name = "reset", .gpio = 1 << 7 }, // on back, hardwired, always resets device regardless OS state
291 { .name = "ses", .gpio = 1 << 4 }, // on back, actual name ezsetup
292 { .name = "power", .gpio = 1 << 0 }, // on front
293 { .name = "copy", .gpio = 1 << 6 }, // on front
297 // GPIO that controls power led also enables/disables some essential functions
300 { .name = "power", .gpio = 1 << 3, .polarity = NORMAL }, // actual name power
302 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE }, // actual name ready
304 .platform_init = bcm4780_init,
308 .name = "Buffalo WHR-G54S",
310 { .name = "reset", .gpio = 1 << 4 },
311 { .name = "bridge", .gpio = 1 << 5 },
312 { .name = "ses", .gpio = 1 << 0 },
315 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
316 { .name = "internal", .gpio = 1 << 3, .polarity = REVERSE },
317 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
318 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
319 { .name = "wlan", .gpio = 1 << 2, .polarity = REVERSE },
323 .name = "Buffalo WBR2-G54",
326 { .name = "reset", .gpio = 1 << 7 },
329 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
333 .name = "Buffalo WHR-HP-G54",
335 { .name = "reset", .gpio = 1 << 4 },
336 { .name = "bridge", .gpio = 1 << 5 },
337 { .name = "ses", .gpio = 1 << 0 },
340 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
341 { .name = "internal", .gpio = 1 << 3, .polarity = REVERSE },
342 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
343 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
344 { .name = "wlan", .gpio = 1 << 2, .polarity = REVERSE },
348 .name = "Buffalo WHR-G125",
350 { .name = "reset", .gpio = 1 << 4 },
351 { .name = "bridge", .gpio = 1 << 5 },
352 { .name = "ses", .gpio = 1 << 0 },
355 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
356 { .name = "internal", .gpio = 1 << 3, .polarity = REVERSE },
357 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
358 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
359 { .name = "wlan", .gpio = 1 << 2, .polarity = REVERSE },
363 .name = "Buffalo WHR2-A54G54",
365 { .name = "reset", .gpio = 1 << 4 },
368 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
372 .name = "Buffalo WLA2-G54L",
375 { .name = "reset", .gpio = 1 << 7 },
378 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
382 .name = "Buffalo WZR-G300N",
384 { .name = "reset", .gpio = 1 << 4 },
387 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
388 { .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
389 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
393 .name = "Buffalo WZR-RS-G54",
395 { .name = "ses", .gpio = 1 << 0 },
396 { .name = "reset", .gpio = 1 << 4 },
399 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
400 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
401 { .name = "vpn", .gpio = 1 << 1, .polarity = REVERSE },
405 .name = "Buffalo WZR-RS-G54HP",
407 { .name = "ses", .gpio = 1 << 0 },
408 { .name = "reset", .gpio = 1 << 4 },
411 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
412 { .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
413 { .name = "vpn", .gpio = 1 << 1, .polarity = REVERSE },
416 [BUFFALO_UNKNOWN] = {
417 .name = "Buffalo (unknown)",
419 { .name = "reset", .gpio = 1 << 7 },
422 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
425 [BUFFALO_UNKNOWN_4710] = {
426 .name = "Buffalo (unknown, BCM4710)",
428 { .name = "reset", .gpio = 1 << 4 },
431 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
436 .name = "Siemens SE505 V1",
438 /* No usable buttons */
441 { .name = "dmz", .gpio = 1 << 4, .polarity = REVERSE },
442 { .name = "wlan", .gpio = 1 << 3, .polarity = REVERSE },
446 .name = "Siemens SE505 V2",
448 /* No usable buttons */
451 { .name = "power", .gpio = 1 << 5, .polarity = REVERSE },
452 { .name = "dmz", .gpio = 1 << 0, .polarity = REVERSE },
453 { .name = "wlan", .gpio = 1 << 3, .polarity = REVERSE },
458 .name = "U.S. Robotics USR5461",
460 /* No usable buttons */
463 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
464 { .name = "printer", .gpio = 1 << 1, .polarity = REVERSE },
469 .name = "Dell TrueMobile 2300",
471 { .name = "reset", .gpio = 1 << 0 },
474 { .name = "wlan", .gpio = 1 << 6, .polarity = REVERSE },
475 { .name = "power", .gpio = 1 << 7, .polarity = REVERSE },
480 .name = "Motorola WE800G",
482 { .name = "reset", .gpio = 1 << 0 },
485 { .name = "power", .gpio = 1 << 4, .polarity = NORMAL },
486 { .name = "diag", .gpio = 1 << 2, .polarity = REVERSE },
487 { .name = "wlan_amber", .gpio = 1 << 1, .polarity = NORMAL },
491 .name = "Motorola WR850G V1",
493 { .name = "reset", .gpio = 1 << 0 },
496 { .name = "power", .gpio = 1 << 4, .polarity = NORMAL },
497 { .name = "diag", .gpio = 1 << 3, .polarity = REVERSE },
498 { .name = "dmz", .gpio = 1 << 6, .polarity = NORMAL },
499 { .name = "wlan_red", .gpio = 1 << 5, .polarity = REVERSE },
500 { .name = "wlan_green", .gpio = 1 << 7, .polarity = REVERSE },
504 .name = "Motorola WR850G V2/V3",
506 { .name = "reset", .gpio = 1 << 5 },
509 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
510 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
511 { .name = "wan", .gpio = 1 << 6, .polarity = INPUT },
512 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
516 .name = "Motorola WR850GP",
518 { .name = "reset", .gpio = 1 << 5 },
521 { .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
522 { .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
523 { .name = "dmz", .gpio = 1 << 6, .polarity = REVERSE },
524 { .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
530 .name = "Belkin (unknown)",
531 /* FIXME: verify & add detection */
533 { .name = "reset", .gpio = 1 << 7 },
536 { .name = "power", .gpio = 1 << 5, .polarity = NORMAL },
537 { .name = "wlan", .gpio = 1 << 3, .polarity = NORMAL },
538 { .name = "connected", .gpio = 1 << 0, .polarity = NORMAL },
543 .name = "Netgear WGT634U",
545 { .name = "reset", .gpio = 1 << 2 },
548 { .name = "power", .gpio = 1 << 3, .polarity = NORMAL },
553 .name = "Trendware TEW411BRP+",
555 { /* No usable buttons */ },
558 { .name = "power", .gpio = 1 << 7, .polarity = NORMAL },
559 { .name = "wlan", .gpio = 1 << 1, .polarity = NORMAL },
560 { .name = "bridge", .gpio = 1 << 6, .polarity = NORMAL },
565 .name = "SimpleTech SimpleShare NAS",
567 { .name = "reset", .gpio = 1 << 7 }, // on back, hardwired, always resets device regardless OS state
568 { .name = "power", .gpio = 1 << 0 }, // on back
571 { .name = "diag", .gpio = 1 << 1, .polarity = REVERSE }, // actual name ready
573 .platform_init = bcm4780_init,
577 .name = "D-Link DIR-130",
579 { .name = "reset", .gpio = 1 << 3},
580 { .name = "reserved", .gpio = 1 << 7},
583 { .name = "diag", .gpio = 1 << 0},
584 { .name = "blue", .gpio = 1 << 6},
588 .name = "D-Link DIR-330",
590 { .name = "reset", .gpio = 1 << 3},
591 { .name = "reserved", .gpio = 1 << 7},
594 { .name = "diag", .gpio = 1 << 0},
595 { .name = "usb", .gpio = 1 << 4},
596 { .name = "blue", .gpio = 1 << 6},
600 .name = "D-Link DWL-3150",
602 { .name = "reset", .gpio = 1 << 7},
605 { .name = "diag", .gpio = 1 << 2},
606 { .name = "status", .gpio = 1 << 1},
611 static struct platform_t __init *platform_detect(void)
613 char *boardnum, *boardtype, *buf;
615 if (strcmp(getvar("nvram_type"), "cfe") == 0)
616 return &platforms[WGT634U];
618 /* Look for a model identifier */
620 /* Based on "model_name" */
621 if (buf = nvram_get("model_name")) {
622 if (!strcmp(buf, "DIR-130"))
623 return &platforms[DIR130];
624 if (!strcmp(buf, "DIR-330"))
625 return &platforms[DIR330];
628 /* Based on "model_no" */
629 if (buf = nvram_get("model_no")) {
630 if (!strncmp(buf,"WL700", 5)) /* WL700* */
631 return &platforms[WL700GE];
634 /* Based on "ModelId" */
635 if (buf = nvram_get("ModelId")) {
636 if (!strcmp(buf, "WR850GP"))
637 return &platforms[WR850GP];
638 if (!strcmp(buf,"WX-5565"))
639 return &platforms[TM2300];
640 if (!strncmp(buf,"WE800G", 6)) /* WE800G* */
641 return &platforms[WE800G];
645 if ((buf = (nvram_get("melco_id") ?: nvram_get("buffalo_id")))) {
646 /* Buffalo hardware, check id for specific hardware matches */
647 if (!strcmp(buf, "29bb0332"))
648 return &platforms[WBR2_G54];
649 if (!strcmp(buf, "29129"))
650 return &platforms[WLA2_G54L];
651 if (!strcmp(buf, "30189"))
652 return &platforms[WHR_HP_G54];
653 if (!strcmp(buf, "32093"))
654 return &platforms[WHR_G125];
655 if (!strcmp(buf, "30182"))
656 return &platforms[WHR_G54S];
657 if (!strcmp(buf, "290441dd"))
658 return &platforms[WHR2_A54G54];
659 if (!strcmp(buf, "31120"))
660 return &platforms[WZR_G300N];
661 if (!strcmp(buf, "30083"))
662 return &platforms[WZR_RS_G54];
663 if (!strcmp(buf, "30103"))
664 return &platforms[WZR_RS_G54HP];
667 /* no easy model number, attempt to guess */
668 boardnum = getvar("boardnum");
669 boardtype = getvar("boardtype");
671 if (strncmp(getvar("pmon_ver"), "CFE", 3) == 0) {
672 /* CFE based - newer hardware */
673 if (!strcmp(boardnum, "42")) { /* Linksys */
674 if (!strcmp(boardtype, "0x478") && !strcmp(getvar("cardbus"), "1"))
675 return &platforms[WRT350N];
677 if (!strcmp(boardtype, "0x0101") && !strcmp(getvar("boot_ver"), "v3.6"))
678 return &platforms[WRT54G3G];
680 if (!strcmp(getvar("et1phyaddr"),"5") && !strcmp(getvar("et1mdcport"), "1"))
681 return &platforms[WRTSL54GS];
683 /* default to WRT54G */
684 return &platforms[WRT54G];
687 if (!strcmp(boardnum, "45")) { /* ASUS */
688 if (!strcmp(boardtype,"0x042f"))
689 return &platforms[WL500GP];
690 else if (!strcmp(boardtype,"0x0472"))
691 return &platforms[WL500W];
693 return &platforms[WL500GD];
696 if (!strcmp(boardnum, "10496"))
697 return &platforms[USR5461];
699 } else { /* PMON based - old stuff */
700 if ((simple_strtoul(getvar("GemtekPmonVer"), NULL, 0) == 9) &&
701 (simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 30)) {
702 return &platforms[WR850GV1];
704 if (!strncmp(boardtype, "bcm94710dev", 11)) {
705 if (!strcmp(boardnum, "42"))
706 return &platforms[WRT54GV1];
707 if (simple_strtoul(boardnum, NULL, 0) == 2)
708 return &platforms[WAP54GV1];
710 if (!strncmp(getvar("hardware_version"), "WL500-", 6))
711 return &platforms[WL500G];
712 if (!strncmp(getvar("hardware_version"), "WL300-", 6)) {
713 /* Either WL-300g or WL-HDD, do more extensive checks */
714 if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
715 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 1))
716 return &platforms[WLHDD];
717 if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
718 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 10))
719 return &platforms[WL300G];
722 /* unknown asus stuff, probably bcm4702 */
723 if (!strncmp(boardnum, "asusX", 5))
724 return &platforms[ASUS_4702];
727 if (buf || !strcmp(boardnum, "00")) {/* probably buffalo */
728 if (!strncmp(boardtype, "bcm94710ap", 10))
729 return &platforms[BUFFALO_UNKNOWN_4710];
731 return &platforms[BUFFALO_UNKNOWN];
734 if (!strncmp(getvar("CFEver"), "MotoWRv2", 8) ||
735 !strncmp(getvar("CFEver"), "MotoWRv3", 8) ||
736 !strcmp(getvar("MOTO_BOARD_TYPE"), "WR_FEM1")) {
738 return &platforms[WR850GV2V3];
741 if (!strcmp(boardnum, "44")) { /* Trendware TEW-411BRP+ */
742 return &platforms[TEW411BRPP];
745 if (!strncmp(boardnum, "04FN52", 6)) /* SimpleTech SimpleShare */
746 return &platforms[STI_NAS];
748 if (!strcmp(getvar("boardnum"), "10") && !strcmp(getvar("boardrev"), "0x13")) /* D-Link DWL-3150 */
749 return &platforms[DWL3150];
755 static void register_buttons(struct button_t *b)
758 platform.button_mask |= b->gpio;
760 platform.button_mask &= ~gpiomask;
762 gpio_outen(platform.button_mask, 0);
763 gpio_control(platform.button_mask, 0);
764 platform.button_polarity = gpio_in() & platform.button_mask;
765 gpio_intpolarity(platform.button_mask, platform.button_polarity);
766 gpio_intmask(platform.button_mask, platform.button_mask);
768 gpio_set_irqenable(1, button_handler);
771 static void unregister_buttons(struct button_t *b)
773 gpio_intmask(platform.button_mask, 0);
775 gpio_set_irqenable(0, button_handler);
780 static void add_msg(struct event_t *event, char *msg, int argv)
787 s = skb_put(event->skb, strlen(msg) + 1);
791 static void hotplug_button(struct work_struct *work)
793 struct event_t *event = container_of(work, struct event_t, wq);
799 event->skb = alloc_skb(2048, GFP_KERNEL);
801 s = skb_put(event->skb, strlen(event->action) + 2);
802 sprintf(s, "%s@", event->action);
805 NETLINK_CB(event->skb).dst_group = 1;
806 netlink_broadcast(uevent_sock, event->skb, 0, 1, GFP_KERNEL);
811 #else /* !LINUX_2_4 */
812 static inline char *kzalloc(unsigned int size, unsigned int gfp)
816 p = kmalloc(size, gfp);
825 static void add_msg(struct event_t *event, char *msg, int argv)
828 event->argv[event->anr++] = event->scratch;
830 event->envp[event->enr++] = event->scratch;
832 event->scratch += sprintf(event->scratch, "%s", msg) + 1;
835 static void hotplug_button(struct event_t *event)
837 char *scratch = kzalloc(256, GFP_KERNEL);
838 event->scratch = scratch;
840 add_msg(event, hotplug_path, 1);
841 add_msg(event, "button", 1);
843 call_usermodehelper (event->argv[0], event->argv, event->envp);
847 #endif /* !LINUX_2_4 */
849 static int fill_event (struct event_t *event)
851 static char buf[128];
853 add_msg(event, "HOME=/", 0);
854 add_msg(event, "PATH=/sbin:/bin:/usr/sbin:/usr/bin", 0);
855 add_msg(event, "SUBSYSTEM=button", 0);
856 snprintf(buf, 128, "ACTION=%s", event->action);
857 add_msg(event, buf, 0);
858 snprintf(buf, 128, "BUTTON=%s", event->name);
859 add_msg(event, buf, 0);
860 snprintf(buf, 128, "SEEN=%ld", event->seen);
861 add_msg(event, buf, 0);
863 snprintf(buf, 128, "SEQNUM=%llu", uevent_next_seqnum());
864 add_msg(event, buf, 0);
872 static irqreturn_t button_handler(int irq, void *dev_id)
874 static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
880 in = gpio_in() & platform.button_mask;
881 gpio_intpolarity(platform.button_mask, in);
882 changed = platform.button_polarity ^ in;
883 platform.button_polarity = in;
885 changed &= ~gpio_outen(0, 0);
887 for (b = platform.buttons; b->name; b++) {
888 struct event_t *event;
890 if (!(b->gpio & changed)) continue;
894 if ((event = (struct event_t *)kzalloc (sizeof(struct event_t), GFP_ATOMIC))) {
895 event->seen = (jiffies - b->seen)/HZ;
896 event->name = b->name;
897 event->action = b->pressed ? "pressed" : "released";
898 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
899 INIT_WORK(&event->wq, (void *)(void *)hotplug_button);
901 INIT_WORK(&event->wq, (void *)(void *)hotplug_button, (void *)event);
903 schedule_work(&event->wq);
911 static void register_leds(struct led_t *l)
913 struct proc_dir_entry *p;
918 leds = proc_mkdir("led", diag);
922 for(; l->name; l++) {
923 if (l->gpio & gpiomask)
926 if (l->gpio & GPIO_TYPE_EXTIF) {
930 if (l->polarity != INPUT) oe_mask != l->gpio;
932 val |= (l->polarity == NORMAL)?0:l->gpio;
935 if (l->polarity == INPUT) continue;
937 if ((p = create_proc_entry(l->name, S_IRUSR, leds))) {
938 l->proc.type = PROC_LED;
940 p->data = (void *) &l->proc;
941 p->proc_fops = &diag_proc_fops;
945 gpio_outen(mask, oe_mask);
946 gpio_control(mask, 0);
950 static void unregister_leds(struct led_t *l)
953 remove_proc_entry(l->name, leds);
955 remove_proc_entry("led", diag);
958 static void set_led_extif(struct led_t *led)
960 gpio_set_extif(led->gpio, led->state);
963 static void led_flash(unsigned long dummy) {
968 for (l = platform.leds; l->name; l++) {
970 if (l->gpio & GPIO_TYPE_EXTIF) {
972 l->state = !l->state;
982 u32 val = ~gpio_in();
984 gpio_outen(mask, mask);
985 gpio_control(mask, 0);
988 if (mask || extif_blink) {
989 mod_timer(&led_timer, jiffies + FLASH_TIME);
993 static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
996 struct inode *inode = file->f_dentry->d_inode;
997 struct proc_dir_entry *dent = inode->u.generic_ip;
999 struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
1004 if ((page = kmalloc(1024, GFP_KERNEL)) == NULL)
1007 if (dent->data != NULL) {
1008 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
1009 switch (handler->type) {
1011 struct led_t * led = (struct led_t *) handler->ptr;
1013 len = sprintf(page, "f\n");
1015 if (led->gpio & GPIO_TYPE_EXTIF) {
1016 len = sprintf(page, "%d\n", led->state);
1018 u32 in = (gpio_in() & led->gpio ? 1 : 0);
1019 u8 p = (led->polarity == NORMAL ? 0 : 1);
1020 len = sprintf(page, "%d\n", ((in ^ p) ? 1 : 0));
1026 len = sprintf(page, "%s\n", platform.name);
1029 len = sprintf(page, "0x%04x\n", gpiomask);
1036 len = min_t(int, len - *ppos, count);
1037 if (copy_to_user(buf, (page + *ppos), len)) {
1051 static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
1054 struct inode *inode = file->f_dentry->d_inode;
1055 struct proc_dir_entry *dent = inode->u.generic_ip;
1057 struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
1062 if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
1065 if (copy_from_user(page, buf, count)) {
1071 if (dent->data != NULL) {
1072 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
1073 switch (handler->type) {
1075 struct led_t *led = (struct led_t *) handler->ptr;
1076 int p = (led->polarity == NORMAL ? 0 : 1);
1078 if (page[0] == 'f') {
1083 if (led->gpio & GPIO_TYPE_EXTIF) {
1084 led->state = p ^ ((page[0] == '1') ? 1 : 0);
1087 gpio_outen(led->gpio, led->gpio);
1088 gpio_control(led->gpio, 0);
1089 gpio_out(led->gpio, ((p ^ (page[0] == '1')) ? led->gpio : 0));
1095 gpiomask = simple_strtoul(page, NULL, 0);
1097 if (platform.buttons) {
1098 unregister_buttons(platform.buttons);
1099 register_buttons(platform.buttons);
1102 if (platform.leds) {
1103 unregister_leds(platform.leds);
1104 register_leds(platform.leds);
1115 static int __init diag_init(void)
1117 static struct proc_dir_entry *p;
1118 static struct platform_t *detected;
1120 detected = platform_detect();
1122 printk(MODULE_NAME ": Router model not detected.\n");
1125 memcpy(&platform, detected, sizeof(struct platform_t));
1127 printk(MODULE_NAME ": Detected '%s'\n", platform.name);
1128 if (platform.platform_init != NULL) {
1129 platform.platform_init();
1132 if (!(diag = proc_mkdir("diag", NULL))) {
1133 printk(MODULE_NAME ": proc_mkdir on /proc/diag failed\n");
1137 if ((p = create_proc_entry("model", S_IRUSR, diag))) {
1138 p->data = (void *) &proc_model;
1139 p->proc_fops = &diag_proc_fops;
1142 if ((p = create_proc_entry("gpiomask", S_IRUSR | S_IWUSR, diag))) {
1143 p->data = (void *) &proc_gpiomask;
1144 p->proc_fops = &diag_proc_fops;
1147 if (platform.buttons)
1148 register_buttons(platform.buttons);
1151 register_leds(platform.leds);
1156 static void __exit diag_exit(void)
1158 del_timer(&led_timer);
1160 if (platform.buttons)
1161 unregister_buttons(platform.buttons);
1164 unregister_leds(platform.leds);
1166 remove_proc_entry("model", diag);
1167 remove_proc_entry("gpiomask", diag);
1168 remove_proc_entry("diag", NULL);
1171 module_init(diag_init);
1172 module_exit(diag_exit);
1174 MODULE_AUTHOR("Mike Baker, Felix Fietkau / OpenWrt.org");
1175 MODULE_LICENSE("GPL");