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         /* Trendware */
  96         TEW411BRPP,
  97 };
  98
  99 static struct platform_t __initdata platforms[] = {
 100         /* Linksys */
 101         [WAP54GV1] = {
 102                 .name           = "Linksys WAP54G V1",
 103                 .buttons        = {
 104                         { .name = "reset",      .gpio = 1 << 0 },
 105                 },
 106                 .leds           = {
 107                         { .name = "diag",       .gpio = 1 << 3 },
 108                         { .name = "wlan",       .gpio = 1 << 4 },
 109                 },
 110         },
 111         [WAP54GV3] = {
 112                 .name           = "Linksys WAP54G V3",
 113                 .buttons        = {
 114                         /* FIXME: verify this */
 115                         { .name = "reset",      .gpio = 1 << 7 },
 116                         { .name = "ses",        .gpio = 1 << 0 },
 117                 },
 118                 .leds           = {
 119                         /* FIXME: diag? */
 120                         { .name = "ses",        .gpio = 1 << 1 },
 121                 },
 122         },
 123         [WRT54GV1] = {
 124                 .name           = "Linksys WRT54G V1.x",
 125                 .buttons        = {
 126                         { .name = "reset",      .gpio = 1 << 6 },
 127                 },
 128                 .leds           = {
 129                         { .name = "diag",       .gpio = 0x13 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
 130                         { .name = "dmz",        .gpio = 0x12 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
 131                 },
 132         },
 133         [WRT54G] = {
 134                 .name           = "Linksys WRT54G/GS/GL",
 135                 .buttons        = {
 136                         { .name = "reset",      .gpio = 1 << 6 },
 137                         { .name = "ses",        .gpio = 1 << 4 },
 138                 },
 139                 .leds           = {
 140                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 141                         { .name = "dmz",        .gpio = 1 << 7, .polarity = REVERSE },
 142                         { .name = "ses_white",  .gpio = 1 << 2, .polarity = REVERSE },
 143                         { .name = "ses_orange", .gpio = 1 << 3, .polarity = REVERSE },
 144                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 145                 },
 146         },
 147         [WRTSL54GS] = {
 148                 .name           = "Linksys WRTSL54GS",
 149                 .buttons        = {
 150                         { .name = "reset",      .gpio = 1 << 6 },
 151                         { .name = "ses",        .gpio = 1 << 4 },
 152                 },
 153                 .leds           = {
 154                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 155                         { .name = "dmz",        .gpio = 1 << 0, .polarity = REVERSE },
 156                         { .name = "ses_white",  .gpio = 1 << 5, .polarity = REVERSE },
 157                         { .name = "ses_orange", .gpio = 1 << 7, .polarity = REVERSE },
 158                 },
 159         },
 160         [WRT54G3G] = {
 161                 .name           = "Linksys WRT54G3G",
 162                 .buttons        = {
 163                         { .name = "reset",      .gpio = 1 << 6 },
 164                         { .name = "3g",         .gpio = 1 << 4 },
 165                 },
 166                 .leds           = {
 167                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 168                         { .name = "dmz",        .gpio = 1 << 7, .polarity = REVERSE },
 169                         { .name = "3g_green",   .gpio = 1 << 2, .polarity = NORMAL },
 170                         { .name = "3g_blue",    .gpio = 1 << 3, .polarity = NORMAL },
 171                         { .name = "3g_blink",   .gpio = 1 << 5, .polarity = NORMAL },
 172                 },
 173         },
 174         /* Asus */
 175         [WLHDD] = {
 176                 .name           = "ASUS WL-HDD",
 177                 .buttons        = {
 178                         { .name = "reset",      .gpio = 1 << 6 },
 179                 },
 180                 .leds           = {
 181                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 182                 },
 183         },
 184         [WL300G] = {
 185                 .name           = "ASUS WL-300g",
 186                 .buttons        = {
 187                         { .name = "reset",      .gpio = 1 << 6 },
 188                 },
 189                 .leds           = {
 190                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 191                 },
 192         },
 193         [WL500G] = {
 194                 .name           = "ASUS WL-500g",
 195                 .buttons        = {
 196                         { .name = "reset",      .gpio = 1 << 6 },
 197                 },
 198                 .leds           = {
 199                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 200                 },
 201         },
 202         [WL500GD] = {
 203                 .name           = "ASUS WL-500g Deluxe",
 204                 .buttons        = {
 205                         { .name = "reset",      .gpio = 1 << 6 },
 206                 },
 207                 .leds           = {
 208                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 209                 },
 210         },
 211         [WL500GP] = {
 212                 .name           = "ASUS WL-500g Premium",
 213                 .buttons        = {
 214                         { .name = "reset",      .gpio = 1 << 0 },
 215                         { .name = "ses",        .gpio = 1 << 4 },
 216                 },
 217                 .leds           = {
 218                         { .name = "power",      .gpio = 1 << 1, .polarity = REVERSE },
 219                 },
 220         },
 221         [ASUS_4702] = {
 222                 .name           = "ASUS (unknown, BCM4702)",
 223                 .buttons        = {
 224                         { .name = "reset",      .gpio = 1 << 6 },
 225                 },
 226                 .leds           = {
 227                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 228                 },
 229         },
 230         /* Buffalo */
 231         [WHR_G54S] = {
 232                 .name           = "Buffalo WHR-G54S",
 233                 .buttons        = {
 234                         { .name = "reset",      .gpio = 1 << 4 },
 235                         { .name = "bridge",     .gpio = 1 << 5 },
 236                         { .name = "ses",        .gpio = 1 << 0 },
 237                 },
 238                 .leds           = {
 239                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 240                         { .name = "internal",   .gpio = 1 << 3, .polarity = REVERSE },
 241                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 242                         { .name = "bridge",     .gpio = 1 << 1, .polarity = REVERSE },
 243                 },
 244         },
 245         [WBR2_G54] = {
 246                 .name           = "Buffalo WBR2-G54",
 247                 /* FIXME: verify */
 248                 .buttons        = {
 249                         { .name = "reset",      .gpio = 1 << 7 },
 250                 },
 251                 .leds           = {
 252                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 253                 },
 254         },
 255         [WHR_HP_G54] = {
 256                 .name           = "Buffalo WHR-HP-G54",
 257                 .buttons        = {
 258                         { .name = "reset",      .gpio = 1 << 4 },
 259                         { .name = "bridge",     .gpio = 1 << 5 },
 260                         { .name = "ses",        .gpio = 1 << 0 },
 261                 },
 262                 .leds           = {
 263                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 264                         { .name = "bridge",     .gpio = 1 << 1, .polarity = REVERSE },
 265                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 266                 },
 267         },
 268         [WHR2_A54G54] = {
 269                 .name           = "Buffalo WHR2-A54G54",
 270                 .buttons        = {
 271                         { .name = "reset",      .gpio = 1 << 4 },
 272                 },
 273                 .leds           = {
 274                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 275                 },
 276         },
 277         [WLA2_G54L] = {
 278                 .name           = "Buffalo WLA2-G54L",
 279                 /* FIXME: verify */
 280                 .buttons        = {
 281                         { .name = "reset",      .gpio = 1 << 7 },
 282                 },
 283                 .leds           = {
 284                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 285                 },
 286         },
 287         [WZR_RS_G54] = {
 288                 .name           = "Buffalo WZR-RS-G54",
 289                 .buttons        = {
 290                         { .name = "ses",        .gpio = 1 << 0 },
 291                         { .name = "reset",      .gpio = 1 << 4 },
 292                 },
 293                 .leds           = {
 294                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 295                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 296                         { .name = "vpn",        .gpio = 1 << 1, .polarity = REVERSE },
 297                 },
 298         },
 299         [WZR_RS_G54HP] = {
 300                 .name           = "Buffalo WZR-RS-G54HP",
 301                 .buttons        = {
 302                         { .name = "ses",        .gpio = 1 << 0 },
 303                         { .name = "reset",      .gpio = 1 << 4 },
 304                 },
 305                 .leds           = {
 306                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 307                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 308                         { .name = "vpn",        .gpio = 1 << 1, .polarity = REVERSE },
 309                 },
 310         },
 311         [BUFFALO_UNKNOWN] = {
 312                 .name           = "Buffalo (unknown)",
 313                 .buttons        = {
 314                         { .name = "reset",      .gpio = 1 << 7 },
 315                 },
 316                 .leds           = {
 317                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 318                 },
 319         },
 320         [BUFFALO_UNKNOWN_4710] = {
 321                 .name           = "Buffalo (unknown, BCM4710)",
 322                 .buttons        = {
 323                         { .name = "reset",      .gpio = 1 << 4 },
 324                 },
 325                 .leds           = {
 326                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 327                 },
 328         },
 329         /* Siemens */
 330         [SE505V1] = {
 331                 .name           = "Siemens SE505 V1",
 332                 .buttons        = {
 333                         /* No usable buttons */
 334                 },
 335                 .leds           = {
 336                         { .name = "dmz",        .gpio = 1 << 4, .polarity = REVERSE },
 337                         { .name = "wlan",       .gpio = 1 << 3, .polarity = REVERSE },
 338                 },
 339         },
 340         [SE505V2] = {
 341                 .name           = "Siemens SE505 V2",
 342                 .buttons        = {
 343                         /* No usable buttons */
 344                 },
 345                 .leds           = {
 346                         { .name = "power",      .gpio = 1 << 5, .polarity = REVERSE },
 347                         { .name = "dmz",        .gpio = 1 << 0, .polarity = REVERSE },
 348                         { .name = "wlan",       .gpio = 1 << 3, .polarity = REVERSE },
 349                 },
 350         },
 351         /* US Robotics */
 352         [USR5461] = {
 353                 .name           = "U.S. Robotics USR5461",
 354                 .buttons        = {
 355                         /* No usable buttons */
 356                 },
 357                 .leds           = {
 358                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 359                         { .name = "printer",    .gpio = 1 << 1, .polarity = REVERSE },
 360                 },
 361         },
 362         /* Dell */
 363         [TM2300] = {
 364                 .name           = "Dell TrueMobile 2300",
 365                 .buttons        = {
 366                         { .name = "reset",      .gpio = 1 << 0 },
 367                 },
 368                 .leds           = {
 369                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 370                 },
 371         },
 372         /* Motorola */
 373         [WE800G] = {
 374                 .name           = "Motorola WE800G",
 375                 .buttons        = {
 376                         { .name = "reset",      .gpio = 1 << 0 },
 377                 },
 378                 .leds           = {
 379                         { .name = "power",      .gpio = 1 << 4, .polarity = NORMAL },
 380                         { .name = "diag",       .gpio = 1 << 2, .polarity = REVERSE },
 381                         { .name = "wlan_amber", .gpio = 1 << 1, .polarity = NORMAL },
 382                 },
 383         },
 384         [WR850GV1] = {
 385                 .name           = "Motorola WR850G V1",
 386                 .buttons        = {
 387                         { .name = "reset",      .gpio = 1 << 0 },
 388                 },
 389                 .leds           = {
 390                         { .name = "power",      .gpio = 1 << 4, .polarity = NORMAL },
 391                         { .name = "diag",       .gpio = 1 << 3, .polarity = REVERSE },
 392                         { .name = "dmz",        .gpio = 1 << 6, .polarity = NORMAL },
 393                         { .name = "wlan_red",   .gpio = 1 << 5, .polarity = REVERSE },
 394                         { .name = "wlan_green", .gpio = 1 << 7, .polarity = REVERSE },
 395                 },
 396         },
 397         [WR850GV2V3] = {
 398                 .name           = "Motorola WR850G V2/V3",
 399                 .buttons        = {
 400                         { .name = "reset",      .gpio = 1 << 5 },
 401                 },
 402                 .leds           = {
 403                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 404                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 405                         { .name = "dmz",        .gpio = 1 << 6, .polarity = REVERSE },
 406                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 407                 },
 408         },
 409         /* Belkin */
 410         [BELKIN_UNKNOWN] = {
 411                 .name           = "Belkin (unknown)",
 412                 /* FIXME: verify & add detection */
 413                 .buttons        = {
 414                         { .name = "reset",      .gpio = 1 << 7 },
 415                 },
 416                 .leds           = {
 417                         { .name = "power",      .gpio = 1 << 5, .polarity = NORMAL },
 418                         { .name = "wlan",       .gpio = 1 << 3, .polarity = NORMAL },
 419                         { .name = "connected",  .gpio = 1 << 0, .polarity = NORMAL },
 420                 },
 421         },
 422         /* Trendware */
 423         [TEW411BRPP] = {
 424                 .name           = "Trendware TEW411BRP+",
 425                 .buttons        = {
 426                         { /* No usable buttons */ },
 427                 },
 428                 .leds           = {
 429                         { .name = "power",      .gpio = 1 << 7, .polarity = NORMAL },
 430                         { .name = "wlan",       .gpio = 1 << 1, .polarity = NORMAL },
 431                         { .name = "bridge",     .gpio = 1 << 6, .polarity = NORMAL },
 432                 },
 433         },
 434 };
 435
 436 static struct platform_t __init *platform_detect(void)
 437 {
 438         char *boardnum, *boardtype, *buf;
 439
 440         boardnum = getvar("boardnum");
 441         boardtype = getvar("boardtype");
 442         if (strncmp(getvar("pmon_ver"), "CFE", 3) == 0) {
 443                 /* CFE based - newer hardware */
 444                 if (!strcmp(boardnum, "42")) { /* Linksys */
 445                         if (!strcmp(boardtype, "0x0101") && !strcmp(getvar("boot_ver"), "v3.6"))
 446                                 return &platforms[WRT54G3G];
 447
 448                         if (!strcmp(getvar("et1phyaddr"),"5") && !strcmp(getvar("et1mdcport"), "1"))
 449                                 return &platforms[WRTSL54GS];
 450
 451                         /* default to WRT54G */
 452                         return &platforms[WRT54G];
 453                 }
 454
 455                 if (!strcmp(boardnum, "45")) { /* ASUS */
 456                         if (!strcmp(boardtype,"0x042f"))
 457                                 return &platforms[WL500GP];
 458                         else
 459                                 return &platforms[WL500GD];
 460                 }
 461
 462                 if (!strcmp(boardnum, "10496"))
 463                         return &platforms[USR5461];
 464         } else { /* PMON based - old stuff */
 465                 if ((simple_strtoul(getvar("GemtekPmonVer"), NULL, 0) == 9) &&
 466                         (simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 30)) {
 467                         if (!strncmp(getvar("ModelId"),"WE800G", 6))
 468                                 return &platforms[WE800G];
 469                         else
 470                                 return &platforms[WR850GV1];
 471                 }
 472                 if (!strncmp(boardtype, "bcm94710dev", 11)) {
 473                         if (!strcmp(boardnum, "42"))
 474                                 return &platforms[WRT54GV1];
 475                         if (simple_strtoul(boardnum, NULL, 0) == 2)
 476                                 return &platforms[WAP54GV1];
 477                 }
 478                 if (!strncmp(getvar("hardware_version"), "WL500-", 6))
 479                         return &platforms[WL500G];
 480                 if (!strncmp(getvar("hardware_version"), "WL300-", 6)) {
 481                         /* Either WL-300g or WL-HDD, do more extensive checks */
 482                         if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
 483                                 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 1))
 484                                 return &platforms[WLHDD];
 485                         if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
 486                                 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 10))
 487                                 return &platforms[WL300G];
 488                 }
 489
 490                 /* unknown asus stuff, probably bcm4702 */
 491                 if (!strncmp(boardnum, "asusX", 5))
 492                         return &platforms[ASUS_4702];
 493         }
 494
 495         if ((buf = (nvram_get("melco_id") ?: nvram_get("buffalo_id")))) {
 496                 /* Buffalo hardware, check id for specific hardware matches */
 497                 if (!strcmp(buf, "29bb0332"))
 498                         return &platforms[WBR2_G54];
 499                 if (!strcmp(buf, "29129"))
 500                         return &platforms[WLA2_G54L];
 501                 if (!strcmp(buf, "30189"))
 502                         return &platforms[WHR_HP_G54];
 503                 if (!strcmp(buf, "30182"))
 504                         return &platforms[WHR_G54S];
 505                 if (!strcmp(buf, "290441dd"))
 506                         return &platforms[WHR2_A54G54];
 507                 if (!strcmp(buf, "30083"))
 508                         return &platforms[WZR_RS_G54];
 509                 if (!strcmp(buf, "30103"))
 510                         return &platforms[WZR_RS_G54HP];
 511         }
 512
 513         if (buf || !strcmp(boardnum, "00")) {/* probably buffalo */
 514                 if (!strncmp(boardtype, "bcm94710ap", 10))
 515                         return &platforms[BUFFALO_UNKNOWN_4710];
 516                 else
 517                         return &platforms[BUFFALO_UNKNOWN];
 518         }
 519
 520
 521         if (!strcmp(getvar("CFEver"), "MotoWRv203") ||
 522                 !strcmp(getvar("MOTO_BOARD_TYPE"), "WR_FEM1")) {
 523
 524                 return &platforms[WR850GV2V3];
 525         }
 526
 527         if (!strcmp(boardnum, "44")) {  /* Trendware TEW-411BRP+ */
 528                 return &platforms[TEW411BRPP];
 529         }
 530
 531         /* not found */
 532         return NULL;
 533 }
 534
 535 static void register_buttons(struct button_t *b)
 536 {
 537         for (; b->name; b++)
 538                 platform.button_mask |= b->gpio;
 539
 540         platform.button_mask &= ~gpiomask;
 541
 542         gpio_outen(platform.button_mask, 0);
 543         gpio_control(platform.button_mask, 0);
 544         platform.button_polarity = gpio_in() & platform.button_mask;
 545         gpio_intpolarity(platform.button_mask, platform.button_polarity);
 546         gpio_intmask(platform.button_mask, platform.button_mask);
 547
 548         gpio_set_irqenable(1, button_handler);
 549 }
 550
 551 static void unregister_buttons(struct button_t *b)
 552 {
 553         gpio_intmask(platform.button_mask, 0);
 554
 555         gpio_set_irqenable(0, button_handler);
 556 }
 557
 558 static void hotplug_button(struct event_t *event)
 559 {
 560 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
 561         call_usermodehelper (event->argv[0], event->argv, event->envp, 1);
 562 #else
 563         call_usermodehelper (event->argv[0], event->argv, event->envp);
 564 #endif
 565         kfree(event);
 566 }
 567
 568 static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
 569 {
 570         struct button_t *b;
 571         u32 in, changed;
 572
 573         in = gpio_in() & platform.button_mask;
 574         gpio_intpolarity(platform.button_mask, in);
 575         changed = platform.button_polarity ^ in;
 576         platform.button_polarity = in;
 577
 578         changed &= ~gpio_outen(0, 0);
 579
 580         for (b = platform.buttons; b->name; b++) {
 581                 struct event_t *event;
 582
 583                 if (!(b->gpio & changed)) continue;
 584
 585                 b->pressed ^= 1;
 586
 587                 if ((event = (struct event_t *)kmalloc (sizeof(struct event_t), GFP_ATOMIC))) {
 588                         int i;
 589                         char *scratch = event->buf;
 590
 591                         i = 0;
 592                         event->argv[i++] = hotplug_path;
 593                         event->argv[i++] = "button";
 594                         event->argv[i] = 0;
 595
 596                         i = 0;
 597                         event->envp[i++] = "HOME=/";
 598                         event->envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
 599                         event->envp[i++] = scratch;
 600                         scratch += sprintf (scratch, "ACTION=%s", b->pressed?"pressed":"released") + 1;
 601                         event->envp[i++] = scratch;
 602                         scratch += sprintf (scratch, "BUTTON=%s", b->name) + 1;
 603                         event->envp[i++] = scratch;
 604                         scratch += sprintf (scratch, "SEEN=%ld", (jiffies - b->seen)/HZ) + 1;
 605                         event->envp[i] = 0;
 606
 607                         INIT_WORK(&event->wq, (void *)(void *)hotplug_button, (void *)event);
 608                         schedule_work(&event->wq);
 609                 }
 610
 611                 b->seen = jiffies;
 612         }
 613         return IRQ_HANDLED;
 614 }
 615
 616 static void register_leds(struct led_t *l)
 617 {
 618         struct proc_dir_entry *p;
 619         u32 mask = 0;
 620         u32 val = 0;
 621
 622         leds = proc_mkdir("led", diag);
 623         if (!leds)
 624                 return;
 625
 626         for(; l->name; l++) {
 627                 if (l->gpio & gpiomask)
 628                         continue;
 629
 630                 if (l->gpio & GPIO_TYPE_EXTIF) {
 631                         l->state = 0;
 632                         set_led_extif(l);
 633                 } else {
 634                         mask |= l->gpio;
 635                         val |= (l->polarity == NORMAL)?0:l->gpio;
 636                 }
 637
 638                 if ((p = create_proc_entry(l->name, S_IRUSR, leds))) {
 639                         l->proc.type = PROC_LED;
 640                         l->proc.ptr = l;
 641                         p->data = (void *) &l->proc;
 642                         p->proc_fops = &diag_proc_fops;
 643                 }
 644         }
 645
 646         gpio_outen(mask, mask);
 647         gpio_control(mask, 0);
 648         gpio_out(mask, val);
 649 }
 650
 651 static void unregister_leds(struct led_t *l)
 652 {
 653         for(; l->name; l++)
 654                 remove_proc_entry(l->name, leds);
 655
 656         remove_proc_entry("led", diag);
 657 }
 658
 659 static void set_led_extif(struct led_t *led)
 660 {
 661         gpio_set_extif(led->gpio, led->state);
 662 }
 663
 664 static void led_flash(unsigned long dummy) {
 665         struct led_t *l;
 666         u32 mask = 0;
 667         u8 extif_blink = 0;
 668
 669         for (l = platform.leds; l->name; l++) {
 670                 if (l->flash) {
 671                         if (l->gpio & GPIO_TYPE_EXTIF) {
 672                                 extif_blink = 1;
 673                                 l->state = !l->state;
 674                                 set_led_extif(l);
 675                         } else {
 676                                 mask |= l->gpio;
 677                         }
 678                 }
 679         }
 680
 681         mask &= ~gpiomask;
 682         if (mask) {
 683                 u32 val = ~gpio_in();
 684
 685                 gpio_outen(mask, mask);
 686                 gpio_control(mask, 0);
 687                 gpio_out(mask, val);
 688         }
 689         if (mask || extif_blink) {
 690                 mod_timer(&led_timer, jiffies + FLASH_TIME);
 691         }
 692 }
 693
 694 static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
 695 {
 696 #ifdef LINUX_2_4
 697         struct inode *inode = file->f_dentry->d_inode;
 698         struct proc_dir_entry *dent = inode->u.generic_ip;
 699 #else
 700         struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
 701 #endif
 702         char *page;
 703         int len = 0;
 704
 705         if ((page = kmalloc(1024, GFP_KERNEL)) == NULL)
 706                 return -ENOBUFS;
 707
 708         if (dent->data != NULL) {
 709                 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
 710                 switch (handler->type) {
 711                         case PROC_LED: {
 712                                 struct led_t * led = (struct led_t *) handler->ptr;
 713                                 if (led->flash) {
 714                                         len = sprintf(page, "f\n");
 715                                 } else {
 716                                         if (led->gpio & GPIO_TYPE_EXTIF) {
 717                                                 len = sprintf(page, "%d\n", led->state);
 718                                         } else {
 719                                                 u32 in = (gpio_in() & led->gpio ? 1 : 0);
 720                                                 u8 p = (led->polarity == NORMAL ? 0 : 1);
 721                                                 len = sprintf(page, "%d\n", ((in ^ p) ? 1 : 0));
 722                                         }
 723                                 }
 724                                 break;
 725                         }
 726                         case PROC_MODEL:
 727                                 len = sprintf(page, "%s\n", platform.name);
 728                                 break;
 729                         case PROC_GPIOMASK:
 730                                 len = sprintf(page, "0x%04x\n", gpiomask);
 731                                 break;
 732                 }
 733         }
 734         len += 1;
 735
 736         if (*ppos < len) {
 737                 len = min_t(int, len - *ppos, count);
 738                 if (copy_to_user(buf, (page + *ppos), len)) {
 739                         kfree(page);
 740                         return -EFAULT;
 741                 }
 742                 *ppos += len;
 743         } else {
 744                 len = 0;
 745         }
 746
 747         return len;
 748 }
 749
 750
 751 static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
 752 {
 753 #ifdef LINUX_2_4
 754         struct inode *inode = file->f_dentry->d_inode;
 755         struct proc_dir_entry *dent = inode->u.generic_ip;
 756 #else
 757         struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
 758 #endif
 759         char *page;
 760         int ret = -EINVAL;
 761
 762         if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
 763                 return -ENOBUFS;
 764
 765         if (copy_from_user(page, buf, count)) {
 766                 kfree(page);
 767                 return -EINVAL;
 768         }
 769         page[count] = 0;
 770
 771         if (dent->data != NULL) {
 772                 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
 773                 switch (handler->type) {
 774                         case PROC_LED: {
 775                                 struct led_t *led = (struct led_t *) handler->ptr;
 776                                 int p = (led->polarity == NORMAL ? 0 : 1);
 777
 778                                 if (page[0] == 'f') {
 779                                         led->flash = 1;
 780                                         led_flash(0);
 781                                 } else {
 782                                         led->flash = 0;
 783                                         if (led->gpio & GPIO_TYPE_EXTIF) {
 784                                                 led->state = p ^ ((page[0] == '1') ? 1 : 0);
 785                                                 set_led_extif(led);
 786                                         } else {
 787                                                 gpio_outen(led->gpio, led->gpio);
 788                                                 gpio_control(led->gpio, 0);
 789                                                 gpio_out(led->gpio, ((p ^ (page[0] == '1')) ? led->gpio : 0));
 790                                         }
 791                                 }
 792                                 break;
 793                         }
 794                         case PROC_GPIOMASK:
 795                                 gpiomask = simple_strtoul(page, NULL, 0);
 796
 797                                 if (platform.buttons) {
 798                                         unregister_buttons(platform.buttons);
 799                                         register_buttons(platform.buttons);
 800                                 }
 801
 802                                 if (platform.leds) {
 803                                         unregister_leds(platform.leds);
 804                                         register_leds(platform.leds);
 805                                 }
 806                                 break;
 807                 }
 808                 ret = count;
 809         }
 810
 811         kfree(page);
 812         return ret;
 813 }
 814
 815 static int __init diag_init(void)
 816 {
 817         static struct proc_dir_entry *p;
 818         static struct platform_t *detected;
 819
 820         detected = platform_detect();
 821         if (!detected) {
 822                 printk(MODULE_NAME ": Router model not detected.\n");
 823                 return -ENODEV;
 824         }
 825         memcpy(&platform, detected, sizeof(struct platform_t));
 826
 827         printk(MODULE_NAME ": Detected '%s'\n", platform.name);
 828
 829         if (!(diag = proc_mkdir("diag", NULL))) {
 830                 printk(MODULE_NAME ": proc_mkdir on /proc/diag failed\n");
 831                 return -EINVAL;
 832         }
 833
 834         if ((p = create_proc_entry("model", S_IRUSR, diag))) {
 835                 p->data = (void *) &proc_model;
 836                 p->proc_fops = &diag_proc_fops;
 837         }
 838
 839         if ((p = create_proc_entry("gpiomask", S_IRUSR | S_IWUSR, diag))) {
 840                 p->data = (void *) &proc_gpiomask;
 841                 p->proc_fops = &diag_proc_fops;
 842         }
 843
 844         if (platform.buttons)
 845                 register_buttons(platform.buttons);
 846
 847         if (platform.leds)
 848                 register_leds(platform.leds);
 849
 850         return 0;
 851 }
 852
 853 static void __exit diag_exit(void)
 854 {
 855
 856         del_timer(&led_timer);
 857
 858         if (platform.buttons)
 859                 unregister_buttons(platform.buttons);
 860
 861         if (platform.leds)
 862                 unregister_leds(platform.leds);
 863
 864         remove_proc_entry("model", diag);
 865         remove_proc_entry("gpiomask", diag);
 866         remove_proc_entry("diag", NULL);
 867 }
 868
 869 module_init(diag_init);
 870 module_exit(diag_exit);
 871
 872 MODULE_AUTHOR("Mike Baker, Felix Fietkau / OpenWrt.org");
 873 MODULE_LICENSE("GPL");