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         for (b = platform.buttons; b->name; b++) {
 560                 struct event_t *event;
 561
 562                 if (!(b->gpio & changed)) continue;
 563
 564                 b->pressed ^= 1;
 565
 566                 if ((event = (struct event_t *)kmalloc (sizeof(struct event_t), GFP_ATOMIC))) {
 567                         int i;
 568                         char *scratch = event->buf;
 569
 570                         i = 0;
 571                         event->argv[i++] = hotplug_path;
 572                         event->argv[i++] = "button";
 573                         event->argv[i] = 0;
 574
 575                         i = 0;
 576                         event->envp[i++] = "HOME=/";
 577                         event->envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
 578                         event->envp[i++] = scratch;
 579                         scratch += sprintf (scratch, "ACTION=%s", b->pressed?"pressed":"released") + 1;
 580                         event->envp[i++] = scratch;
 581                         scratch += sprintf (scratch, "BUTTON=%s", b->name) + 1;
 582                         event->envp[i++] = scratch;
 583                         scratch += sprintf (scratch, "SEEN=%ld", (jiffies - b->seen)/HZ) + 1;
 584                         event->envp[i] = 0;
 585
 586                         INIT_WORK(&event->wq, (void *)(void *)hotplug_button, (void *)event);
 587                         schedule_work(&event->wq);
 588                 }
 589
 590                 b->seen = jiffies;
 591         }
 592         return IRQ_HANDLED;
 593 }
 594
 595 static void register_leds(struct led_t *l)
 596 {
 597         struct proc_dir_entry *p;
 598         u32 mask = 0;
 599         u32 val = 0;
 600
 601         leds = proc_mkdir("led", diag);
 602         if (!leds)
 603                 return;
 604
 605         for(; l->name; l++) {
 606                 if (l->gpio & gpiomask)
 607                         continue;
 608
 609                 if (l->gpio & GPIO_TYPE_EXTIF) {
 610                         l->state = 0;
 611                         set_led_extif(l);
 612                 } else {
 613                         mask |= l->gpio;
 614                         val |= (l->polarity == NORMAL)?0:l->gpio;
 615                 }
 616
 617                 if ((p = create_proc_entry(l->name, S_IRUSR, leds))) {
 618                         l->proc.type = PROC_LED;
 619                         l->proc.ptr = l;
 620                         p->data = (void *) &l->proc;
 621                         p->proc_fops = &diag_proc_fops;
 622                 }
 623         }
 624
 625         gpio_outen(mask, mask);
 626         gpio_control(mask, 0);
 627         gpio_out(mask, val);
 628 }
 629
 630 static void unregister_leds(struct led_t *l)
 631 {
 632         for(; l->name; l++)
 633                 remove_proc_entry(l->name, leds);
 634
 635         remove_proc_entry("led", diag);
 636 }
 637
 638 static void set_led_extif(struct led_t *led)
 639 {
 640         gpio_set_extif(led->gpio, led->state);
 641 }
 642
 643 static void led_flash(unsigned long dummy) {
 644         struct led_t *l;
 645         u32 mask = 0;
 646         u8 extif_blink = 0;
 647
 648         for (l = platform.leds; l->name; l++) {
 649                 if (l->flash) {
 650                         if (l->gpio & GPIO_TYPE_EXTIF) {
 651                                 extif_blink = 1;
 652                                 l->state = !l->state;
 653                                 set_led_extif(l);
 654                         } else {
 655                                 mask |= l->gpio;
 656                         }
 657                 }
 658         }
 659
 660         mask &= ~gpiomask;
 661         if (mask) {
 662                 u32 val = ~gpio_in();
 663
 664                 gpio_outen(mask, mask);
 665                 gpio_control(mask, 0);
 666                 gpio_out(mask, val);
 667         }
 668         if (mask || extif_blink) {
 669                 mod_timer(&led_timer, jiffies + FLASH_TIME);
 670         }
 671 }
 672
 673 static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
 674 {
 675 #ifdef LINUX_2_4
 676         struct inode *inode = file->f_dentry->d_inode;
 677         struct proc_dir_entry *dent = inode->u.generic_ip;
 678 #else
 679         struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
 680 #endif
 681         char *page;
 682         int len = 0;
 683
 684         if ((page = kmalloc(1024, GFP_KERNEL)) == NULL)
 685                 return -ENOBUFS;
 686
 687         if (dent->data != NULL) {
 688                 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
 689                 switch (handler->type) {
 690                         case PROC_LED: {
 691                                 struct led_t * led = (struct led_t *) handler->ptr;
 692                                 if (led->flash) {
 693                                         len = sprintf(page, "f\n");
 694                                 } else {
 695                                         if (led->gpio & GPIO_TYPE_EXTIF) {
 696                                                 len = sprintf(page, "%d\n", led->state);
 697                                         } else {
 698                                                 u32 in = (gpio_in() & led->gpio ? 1 : 0);
 699                                                 u8 p = (led->polarity == NORMAL ? 0 : 1);
 700                                                 len = sprintf(page, "%d\n", ((in ^ p) ? 1 : 0));
 701                                         }
 702                                 }
 703                                 break;
 704                         }
 705                         case PROC_MODEL:
 706                                 len = sprintf(page, "%s\n", platform.name);
 707                                 break;
 708                         case PROC_GPIOMASK:
 709                                 len = sprintf(page, "0x%04x\n", gpiomask);
 710                                 break;
 711                 }
 712         }
 713         len += 1;
 714
 715         if (*ppos < len) {
 716                 len = min_t(int, len - *ppos, count);
 717                 if (copy_to_user(buf, (page + *ppos), len)) {
 718                         kfree(page);
 719                         return -EFAULT;
 720                 }
 721                 *ppos += len;
 722         } else {
 723                 len = 0;
 724         }
 725
 726         return len;
 727 }
 728
 729
 730 static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
 731 {
 732 #ifdef LINUX_2_4
 733         struct inode *inode = file->f_dentry->d_inode;
 734         struct proc_dir_entry *dent = inode->u.generic_ip;
 735 #else
 736         struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
 737 #endif
 738         char *page;
 739         int ret = -EINVAL;
 740
 741         if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
 742                 return -ENOBUFS;
 743
 744         if (copy_from_user(page, buf, count)) {
 745                 kfree(page);
 746                 return -EINVAL;
 747         }
 748         page[count] = 0;
 749
 750         if (dent->data != NULL) {
 751                 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
 752                 switch (handler->type) {
 753                         case PROC_LED: {
 754                                 struct led_t *led = (struct led_t *) handler->ptr;
 755                                 int p = (led->polarity == NORMAL ? 0 : 1);
 756
 757                                 if (page[0] == 'f') {
 758                                         led->flash = 1;
 759                                         led_flash(0);
 760                                 } else {
 761                                         led->flash = 0;
 762                                         if (led->gpio & GPIO_TYPE_EXTIF) {
 763                                                 led->state = p ^ ((page[0] == '1') ? 1 : 0);
 764                                                 set_led_extif(led);
 765                                         } else {
 766                                                 gpio_outen(led->gpio, led->gpio);
 767                                                 gpio_control(led->gpio, 0);
 768                                                 gpio_out(led->gpio, ((p ^ (page[0] == '1')) ? led->gpio : 0));
 769                                         }
 770                                 }
 771                                 break;
 772                         }
 773                         case PROC_GPIOMASK:
 774                                 gpiomask = simple_strtoul(page, NULL, 0);
 775
 776                                 if (platform.buttons) {
 777                                         unregister_buttons(platform.buttons);
 778                                         register_buttons(platform.buttons);
 779                                 }
 780
 781                                 if (platform.leds) {
 782                                         unregister_leds(platform.leds);
 783                                         register_leds(platform.leds);
 784                                 }
 785                                 break;
 786                 }
 787                 ret = count;
 788         }
 789
 790         kfree(page);
 791         return ret;
 792 }
 793
 794 static int __init diag_init(void)
 795 {
 796         static struct proc_dir_entry *p;
 797         static struct platform_t *detected;
 798
 799         detected = platform_detect();
 800         if (!detected) {
 801                 printk(MODULE_NAME ": Router model not detected.\n");
 802                 return -ENODEV;
 803         }
 804         memcpy(&platform, detected, sizeof(struct platform_t));
 805
 806         printk(MODULE_NAME ": Detected '%s'\n", platform.name);
 807
 808         if (!(diag = proc_mkdir("diag", NULL))) {
 809                 printk(MODULE_NAME ": proc_mkdir on /proc/diag failed\n");
 810                 return -EINVAL;
 811         }
 812
 813         if ((p = create_proc_entry("model", S_IRUSR, diag))) {
 814                 p->data = (void *) &proc_model;
 815                 p->proc_fops = &diag_proc_fops;
 816         }
 817
 818         if ((p = create_proc_entry("gpiomask", S_IRUSR | S_IWUSR, diag))) {
 819                 p->data = (void *) &proc_gpiomask;
 820                 p->proc_fops = &diag_proc_fops;
 821         }
 822
 823         if (platform.buttons)
 824                 register_buttons(platform.buttons);
 825
 826         if (platform.leds)
 827                 register_leds(platform.leds);
 828
 829         return 0;
 830 }
 831
 832 static void __exit diag_exit(void)
 833 {
 834
 835         del_timer(&led_timer);
 836
 837         if (platform.buttons)
 838                 unregister_buttons(platform.buttons);
 839
 840         if (platform.leds)
 841                 unregister_leds(platform.leds);
 842
 843         remove_proc_entry("model", diag);
 844         remove_proc_entry("gpiomask", diag);
 845         remove_proc_entry("diag", NULL);
 846 }
 847
 848 module_init(diag_init);
 849 module_exit(diag_exit);
 850
 851 MODULE_AUTHOR("Mike Baker, Felix Fietkau / OpenWrt.org");
 852 MODULE_LICENSE("GPL");