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         BUFFALO_UNKNOWN,
  74         BUFFALO_UNKNOWN_4710,
  75
  76         /* Siemens */
  77         SE505V1,
  78         SE505V2,
  79
  80         /* US Robotics */
  81         USR5461,
  82
  83         /* Dell */
  84         TM2300,
  85
  86         /* Motorola */
  87         WE800G,
  88         WR850GV1,
  89         WR850GV2V3,
  90
  91         /* Belkin */
  92         BELKIN_UNKNOWN,
  93 };
  94
  95 static struct platform_t __initdata platforms[] = {
  96         /* Linksys */
  97         [WAP54GV1] = {
  98                 .name           = "Linksys WAP54G V1",
  99                 .buttons        = {
 100                         { .name = "reset",      .gpio = 1 << 0 },
 101                 },
 102                 .leds           = {
 103                         { .name = "diag",       .gpio = 1 << 3 },
 104                         { .name = "wlan",       .gpio = 1 << 4 },
 105                 },
 106         },
 107         [WAP54GV3] = {
 108                 .name           = "Linksys WAP54G V3",
 109                 .buttons        = {
 110                         /* FIXME: verify this */
 111                         { .name = "reset",      .gpio = 1 << 7 },
 112                         { .name = "ses",        .gpio = 1 << 0 },
 113                 },
 114                 .leds           = {
 115                         /* FIXME: diag? */
 116                         { .name = "ses",        .gpio = 1 << 1 },
 117                 },
 118         },
 119         [WRT54GV1] = {
 120                 .name           = "Linksys WRT54G V1.x",
 121                 .buttons        = {
 122                         { .name = "reset",      .gpio = 1 << 6 },
 123                 },
 124                 .leds           = {
 125                         { .name = "diag",       .gpio = 0x13 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
 126                         { .name = "dmz",        .gpio = 0x12 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
 127                 },
 128         },
 129         [WRT54G] = {
 130                 .name           = "Linksys WRT54G/GS/GL",
 131                 .buttons        = {
 132                         { .name = "reset",      .gpio = 1 << 6 },
 133                         { .name = "ses",        .gpio = 1 << 4 },
 134                 },
 135                 .leds           = {
 136                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 137                         { .name = "dmz",        .gpio = 1 << 7, .polarity = REVERSE },
 138                         { .name = "ses_white",  .gpio = 1 << 2, .polarity = REVERSE },
 139                         { .name = "ses_orange", .gpio = 1 << 3, .polarity = REVERSE },
 140                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 141                 },
 142         },
 143         [WRTSL54GS] = {
 144                 .name           = "Linksys WRTSL54GS",
 145                 .buttons        = {
 146                         { .name = "reset",      .gpio = 1 << 6 },
 147                         { .name = "ses",        .gpio = 1 << 4 },
 148                 },
 149                 .leds           = {
 150                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 151                         { .name = "dmz",        .gpio = 1 << 0, .polarity = REVERSE },
 152                         { .name = "ses_white",  .gpio = 1 << 5, .polarity = REVERSE },
 153                         { .name = "ses_orange", .gpio = 1 << 7, .polarity = REVERSE },
 154                 },
 155         },
 156         [WRT54G3G] = {
 157                 .name           = "Linksys WRT54G3G",
 158                 .buttons        = {
 159                         { .name = "reset",      .gpio = 1 << 6 },
 160                         { .name = "3g",         .gpio = 1 << 4 },
 161                 },
 162                 .leds           = {
 163                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 164                         { .name = "dmz",        .gpio = 1 << 7, .polarity = REVERSE },
 165                         { .name = "3g_green",   .gpio = 1 << 2, .polarity = NORMAL },
 166                         { .name = "3g_blue",    .gpio = 1 << 3, .polarity = NORMAL },
 167                         { .name = "3g_blink",   .gpio = 1 << 5, .polarity = NORMAL },
 168                 },
 169         },
 170         /* Asus */
 171         [WLHDD] = {
 172                 .name           = "ASUS WL-HDD",
 173                 .buttons        = {
 174                         { .name = "reset",      .gpio = 1 << 6 },
 175                 },
 176                 .leds           = {
 177                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 178                 },
 179         },
 180         [WL300G] = {
 181                 .name           = "ASUS WL-300g",
 182                 .buttons        = {
 183                         { .name = "reset",      .gpio = 1 << 6 },
 184                 },
 185                 .leds           = {
 186                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 187                 },
 188         },
 189         [WL500G] = {
 190                 .name           = "ASUS WL-500g",
 191                 .buttons        = {
 192                         { .name = "reset",      .gpio = 1 << 6 },
 193                 },
 194                 .leds           = {
 195                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 196                 },
 197         },
 198         [WL500GD] = {
 199                 .name           = "ASUS WL-500g Deluxe",
 200                 .buttons        = {
 201                         { .name = "reset",      .gpio = 1 << 6 },
 202                 },
 203                 .leds           = {
 204                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 205                 },
 206         },
 207         [WL500GP] = {
 208                 .name           = "ASUS WL-500g Premium",
 209                 .buttons        = {
 210                         { .name = "reset",      .gpio = 1 << 0 },
 211                         { .name = "ses",        .gpio = 1 << 4 },
 212                 },
 213                 .leds           = {
 214                         { .name = "power",      .gpio = 1 << 1, .polarity = REVERSE },
 215                 },
 216         },
 217         [ASUS_4702] = {
 218                 .name           = "ASUS (unknown, BCM4702)",
 219                 .buttons        = {
 220                         { .name = "reset",      .gpio = 1 << 6 },
 221                 },
 222                 .leds           = {
 223                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 224                 },
 225         },
 226         /* Buffalo */
 227         [WHR_G54S] = {
 228                 .name           = "Buffalo WHR-G54S",
 229                 .buttons        = {
 230                         { .name = "reset",      .gpio = 1 << 4 },
 231                         { .name = "bridge",     .gpio = 1 << 5 },
 232                         { .name = "ses",        .gpio = 1 << 0 },
 233                 },
 234                 .leds           = {
 235                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 236                         { .name = "internal",   .gpio = 1 << 3, .polarity = REVERSE },
 237                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 238                         { .name = "bridge",     .gpio = 1 << 1, .polarity = REVERSE },
 239                 },
 240         },
 241         [WBR2_G54] = {
 242                 .name           = "Buffalo WBR2-G54",
 243                 /* FIXME: verify */
 244                 .buttons        = {
 245                         { .name = "reset",      .gpio = 1 << 7 },
 246                 },
 247                 .leds           = {
 248                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 249                 },
 250         },
 251         [WHR_HP_G54] = {
 252                 .name           = "Buffalo WHR-HP-G54",
 253                 .buttons        = {
 254                         { .name = "reset",      .gpio = 1 << 4 },
 255                         { .name = "bridge",     .gpio = 1 << 5 },
 256                         { .name = "ses",        .gpio = 1 << 0 },
 257                 },
 258                 .leds           = {
 259                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 260                         { .name = "bridge",     .gpio = 1 << 1, .polarity = REVERSE },
 261                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 262                 },
 263         },
 264         [WHR2_A54G54] = {
 265                 .name           = "Buffalo WHR2-A54G54",
 266                 .buttons        = {
 267                         { .name = "reset",      .gpio = 1 << 4 },
 268                 },
 269                 .leds           = {
 270                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 271                 },
 272         },
 273         [WLA2_G54L] = {
 274                 .name           = "Buffalo WLA2-G54L",
 275                 /* FIXME: verify */
 276                 .buttons        = {
 277                         { .name = "reset",      .gpio = 1 << 7 },
 278                 },
 279                 .leds           = {
 280                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 281                 },
 282         },
 283         [WZR_RS_G54] = {
 284                 .name           = "Buffalo WZR-RS-G54",
 285                 .buttons        = {
 286                         { .name = "ses",        .gpio = 1 << 0 },
 287                         { .name = "reset",      .gpio = 1 << 7 },
 288                 },
 289                 .leds           = {
 290                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 291                 },
 292         },
 293         [BUFFALO_UNKNOWN] = {
 294                 .name           = "Buffalo (unknown)",
 295                 .buttons        = {
 296                         { .name = "reset",      .gpio = 1 << 7 },
 297                 },
 298                 .leds           = {
 299                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 300                 },
 301         },
 302         [BUFFALO_UNKNOWN_4710] = {
 303                 .name           = "Buffalo (unknown, BCM4710)",
 304                 .buttons        = {
 305                         { .name = "reset",      .gpio = 1 << 4 },
 306                 },
 307                 .leds           = {
 308                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 309                 },
 310         },
 311         /* Siemens */
 312         [SE505V1] = {
 313                 .name           = "Siemens SE505 V1",
 314                 .buttons        = {
 315                         /* No usable buttons */
 316                 },
 317                 .leds           = {
 318                         { .name = "dmz",        .gpio = 1 << 4, .polarity = REVERSE },
 319                         { .name = "wlan",       .gpio = 1 << 3, .polarity = REVERSE },
 320                 },
 321         },
 322         [SE505V2] = {
 323                 .name           = "Siemens SE505 V2",
 324                 .buttons        = {
 325                         /* No usable buttons */
 326                 },
 327                 .leds           = {
 328                         { .name = "power",      .gpio = 1 << 5, .polarity = REVERSE },
 329                         { .name = "dmz",        .gpio = 1 << 0, .polarity = REVERSE },
 330                         { .name = "wlan",       .gpio = 1 << 3, .polarity = REVERSE },
 331                 },
 332         },
 333         /* US Robotics */
 334         [USR5461] = {
 335                 .name           = "U.S. Robotics USR5461",
 336                 .buttons        = {
 337                         /* No usable buttons */
 338                 },
 339                 .leds           = {
 340                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 341                         { .name = "printer",    .gpio = 1 << 1, .polarity = REVERSE },
 342                 },
 343         },
 344         /* Dell */
 345         [TM2300] = {
 346                 .name           = "Dell TrueMobile 2300",
 347                 .buttons        = {
 348                         { .name = "reset",      .gpio = 1 << 0 },
 349                 },
 350                 .leds           = {
 351                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 352                 },
 353         },
 354         /* Motorola */
 355         [WE800G] = {
 356                 .name           = "Motorola WE800G",
 357                 .buttons        = {
 358                         { .name = "reset",      .gpio = 1 << 0 },
 359                 },
 360                 .leds           = {
 361                         { .name = "power",      .gpio = 1 << 4, .polarity = NORMAL },
 362                         { .name = "diag",       .gpio = 1 << 2, .polarity = REVERSE },
 363                         { .name = "wlan_amber", .gpio = 1 << 1, .polarity = NORMAL },
 364                 },
 365         },
 366         [WR850GV1] = {
 367                 .name           = "Motorola WR850G V1",
 368                 .buttons        = {
 369                         { .name = "reset",      .gpio = 1 << 0 },
 370                 },
 371                 .leds           = {
 372                         { .name = "power",      .gpio = 1 << 4, .polarity = NORMAL },
 373                         { .name = "diag",       .gpio = 1 << 3, .polarity = REVERSE },
 374                         { .name = "dmz",        .gpio = 1 << 6, .polarity = NORMAL },
 375                         { .name = "wlan_red",   .gpio = 1 << 5, .polarity = REVERSE },
 376                         { .name = "wlan_green", .gpio = 1 << 7, .polarity = REVERSE },
 377                 },
 378         },
 379         [WR850GV2V3] = {
 380                 .name           = "Motorola WR850G V2/V3",
 381                 .buttons        = {
 382                         { .name = "reset",      .gpio = 1 << 5 },
 383                 },
 384                 .leds           = {
 385                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 386                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 387                         { .name = "dmz",        .gpio = 1 << 6, .polarity = REVERSE },
 388                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 389                 },
 390         },
 391         /* Belkin */
 392         [BELKIN_UNKNOWN] = {
 393                 .name           = "Belkin (unknown)",
 394                 /* FIXME: verify & add detection */
 395                 .buttons        = {
 396                         { .name = "reset",      .gpio = 1 << 7 },
 397                 },
 398                 .leds           = {
 399                         { .name = "power",      .gpio = 1 << 5, .polarity = NORMAL },
 400                         { .name = "wlan",       .gpio = 1 << 3, .polarity = NORMAL },
 401                         { .name = "connected",  .gpio = 1 << 0, .polarity = NORMAL },
 402                 },
 403         },
 404 };
 405
 406 static struct platform_t __init *platform_detect(void)
 407 {
 408         char *boardnum, *boardtype, *buf;
 409
 410         boardnum = getvar("boardnum");
 411         boardtype = getvar("boardtype");
 412         if (strncmp(getvar("pmon_ver"), "CFE", 3) == 0) {
 413                 /* CFE based - newer hardware */
 414                 if (!strcmp(boardnum, "42")) { /* Linksys */
 415                         if (!strcmp(boardtype, "0x0101") && !strcmp(getvar("boot_ver"), "v3.6"))
 416                                 return &platforms[WRT54G3G];
 417
 418                         if (!strcmp(getvar("et1phyaddr"),"5") && !strcmp(getvar("et1mdcport"), "1"))
 419                                 return &platforms[WRTSL54GS];
 420
 421                         /* default to WRT54G */
 422                         return &platforms[WRT54G];
 423                 }
 424
 425                 if (!strcmp(boardnum, "45")) { /* ASUS */
 426                         if (!strcmp(boardtype,"0x042f"))
 427                                 return &platforms[WL500GP];
 428                         else
 429                                 return &platforms[WL500GD];
 430                 }
 431
 432                 if (!strcmp(boardnum, "10496"))
 433                         return &platforms[USR5461];
 434         } else { /* PMON based - old stuff */
 435                 if ((simple_strtoul(getvar("GemtekPmonVer"), NULL, 0) == 9) &&
 436                         (simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 30)) {
 437                         if (!strncmp(getvar("ModelId"),"WE800G", 6))
 438                                 return &platforms[WE800G];
 439                         else
 440                                 return &platforms[WR850GV1];
 441                 }
 442                 if (!strncmp(boardtype, "bcm94710dev", 11)) {
 443                         if (!strcmp(boardnum, "42"))
 444                                 return &platforms[WRT54GV1];
 445                         if (simple_strtoul(boardnum, NULL, 0) == 2)
 446                                 return &platforms[WAP54GV1];
 447                 }
 448                 if (!strncmp(getvar("hardware_version"), "WL500-", 6))
 449                         return &platforms[WL500G];
 450                 if (!strncmp(getvar("hardware_version"), "WL300-", 6)) {
 451                         /* Either WL-300g or WL-HDD, do more extensive checks */
 452                         if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
 453                                 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 1))
 454                                 return &platforms[WLHDD];
 455                         if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
 456                                 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 10))
 457                                 return &platforms[WL300G];
 458                 }
 459
 460                 /* unknown asus stuff, probably bcm4702 */
 461                 if (!strncmp(boardnum, "asusX", 5))
 462                         return &platforms[ASUS_4702];
 463         }
 464
 465         if ((buf = (nvram_get("melco_id") ?: nvram_get("buffalo_id")))) {
 466                 /* Buffalo hardware, check id for specific hardware matches */
 467                 if (!strcmp(buf, "29bb0332"))
 468                         return &platforms[WBR2_G54];
 469                 if (!strcmp(buf, "29129"))
 470                         return &platforms[WLA2_G54L];
 471                 if (!strcmp(buf, "30189"))
 472                         return &platforms[WHR_HP_G54];
 473                 if (!strcmp(buf, "30182"))
 474                         return &platforms[WHR_G54S];
 475                 if (!strcmp(buf, "290441dd"))
 476                         return &platforms[WHR2_A54G54];
 477                 if (!strcmp(buf, "30083"))
 478                         return &platforms[WZR_RS_G54];
 479         }
 480
 481         if (buf || !strcmp(boardnum, "00")) {/* probably buffalo */
 482                 if (!strncmp(boardtype, "bcm94710ap", 10))
 483                         return &platforms[BUFFALO_UNKNOWN_4710];
 484                 else
 485                         return &platforms[BUFFALO_UNKNOWN];
 486         }
 487
 488
 489         if (!strcmp(getvar("CFEver"), "MotoWRv203") ||
 490                 !strcmp(getvar("MOTO_BOARD_TYPE"), "WR_FEM1")) {
 491
 492                 return &platforms[WR850GV2V3];
 493         }
 494
 495         /* not found */
 496         return NULL;
 497 }
 498
 499 static void register_buttons(struct button_t *b)
 500 {
 501         for (; b->name; b++)
 502                 platform.button_mask |= b->gpio;
 503
 504         platform.button_mask &= ~gpiomask;
 505
 506         gpio_outen(platform.button_mask, 0);
 507         gpio_control(platform.button_mask, 0);
 508         platform.button_polarity = gpio_in() & platform.button_mask;
 509         gpio_intpolarity(platform.button_mask, platform.button_polarity);
 510         gpio_intmask(platform.button_mask, platform.button_mask);
 511
 512         gpio_set_irqenable(1, button_handler);
 513 }
 514
 515 static void unregister_buttons(struct button_t *b)
 516 {
 517         gpio_intmask(platform.button_mask, 0);
 518
 519         gpio_set_irqenable(0, button_handler);
 520 }
 521
 522 static void hotplug_button(struct event_t *event)
 523 {
 524 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
 525         call_usermodehelper (event->argv[0], event->argv, event->envp, 1);
 526 #else
 527         call_usermodehelper (event->argv[0], event->argv, event->envp);
 528 #endif
 529         kfree(event);
 530 }
 531
 532 static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
 533 {
 534         struct button_t *b;
 535         u32 in, changed;
 536
 537         in = gpio_in() & platform.button_mask;
 538         gpio_intpolarity(platform.button_mask, in);
 539         changed = platform.button_polarity ^ in;
 540         platform.button_polarity = in;
 541
 542         for (b = platform.buttons; b->name; b++) {
 543                 struct event_t *event;
 544
 545                 if (!(b->gpio & changed)) continue;
 546
 547                 b->pressed ^= 1;
 548
 549                 if ((event = (struct event_t *)kmalloc (sizeof(struct event_t), GFP_ATOMIC))) {
 550                         int i;
 551                         char *scratch = event->buf;
 552
 553                         i = 0;
 554                         event->argv[i++] = hotplug_path;
 555                         event->argv[i++] = "button";
 556                         event->argv[i] = 0;
 557
 558                         i = 0;
 559                         event->envp[i++] = "HOME=/";
 560                         event->envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
 561                         event->envp[i++] = scratch;
 562                         scratch += sprintf (scratch, "ACTION=%s", b->pressed?"pressed":"released") + 1;
 563                         event->envp[i++] = scratch;
 564                         scratch += sprintf (scratch, "BUTTON=%s", b->name) + 1;
 565                         event->envp[i++] = scratch;
 566                         scratch += sprintf (scratch, "SEEN=%ld", (jiffies - b->seen)/HZ) + 1;
 567                         event->envp[i] = 0;
 568
 569                         INIT_WORK(&event->wq, (void *)(void *)hotplug_button, (void *)event);
 570                         schedule_work(&event->wq);
 571                 }
 572
 573                 b->seen = jiffies;
 574         }
 575         return IRQ_HANDLED;
 576 }
 577
 578 static void register_leds(struct led_t *l)
 579 {
 580         struct proc_dir_entry *p;
 581         u32 mask = 0;
 582         u32 val = 0;
 583
 584         leds = proc_mkdir("led", diag);
 585         if (!leds)
 586                 return;
 587
 588         for(; l->name; l++) {
 589                 if (l->gpio & gpiomask)
 590                         continue;
 591
 592                 if (l->gpio & GPIO_TYPE_EXTIF) {
 593                         l->state = 0;
 594                         set_led_extif(l);
 595                 } else {
 596                         mask |= l->gpio;
 597                         val |= (l->polarity == NORMAL)?0:l->gpio;
 598                 }
 599
 600                 if ((p = create_proc_entry(l->name, S_IRUSR, leds))) {
 601                         l->proc.type = PROC_LED;
 602                         l->proc.ptr = l;
 603                         p->data = (void *) &l->proc;
 604                         p->proc_fops = &diag_proc_fops;
 605                 }
 606         }
 607
 608         gpio_outen(mask, mask);
 609         gpio_control(mask, 0);
 610         gpio_out(mask, val);
 611 }
 612
 613 static void unregister_leds(struct led_t *l)
 614 {
 615         for(; l->name; l++)
 616                 remove_proc_entry(l->name, leds);
 617
 618         remove_proc_entry("led", diag);
 619 }
 620
 621 static void set_led_extif(struct led_t *led)
 622 {
 623         gpio_set_extif(led->gpio, led->state);
 624 }
 625
 626 static void led_flash(unsigned long dummy) {
 627         struct led_t *l;
 628         u32 mask = 0;
 629         u8 extif_blink = 0;
 630
 631         for (l = platform.leds; l->name; l++) {
 632                 if (l->flash) {
 633                         if (l->gpio & GPIO_TYPE_EXTIF) {
 634                                 extif_blink = 1;
 635                                 l->state = !l->state;
 636                                 set_led_extif(l);
 637                         } else {
 638                                 mask |= l->gpio;
 639                         }
 640                 }
 641         }
 642
 643         mask &= ~gpiomask;
 644         if (mask) {
 645                 u32 val = ~gpio_in();
 646
 647                 gpio_outen(mask, mask);
 648                 gpio_control(mask, 0);
 649                 gpio_out(mask, val);
 650         }
 651         if (mask || extif_blink) {
 652                 mod_timer(&led_timer, jiffies + FLASH_TIME);
 653         }
 654 }
 655
 656 static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
 657 {
 658 #ifdef LINUX_2_4
 659         struct inode *inode = file->f_dentry->d_inode;
 660         struct proc_dir_entry *dent = inode->u.generic_ip;
 661 #else
 662         struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
 663 #endif
 664         char *page;
 665         int len = 0;
 666
 667         if ((page = kmalloc(1024, GFP_KERNEL)) == NULL)
 668                 return -ENOBUFS;
 669
 670         if (dent->data != NULL) {
 671                 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
 672                 switch (handler->type) {
 673                         case PROC_LED: {
 674                                 struct led_t * led = (struct led_t *) handler->ptr;
 675                                 if (led->flash) {
 676                                         len = sprintf(page, "f\n");
 677                                 } else {
 678                                         if (led->gpio & GPIO_TYPE_EXTIF) {
 679                                                 len = sprintf(page, "%d\n", led->state);
 680                                         } else {
 681                                                 u32 in = (gpio_in() & led->gpio ? 1 : 0);
 682                                                 u8 p = (led->polarity == NORMAL ? 0 : 1);
 683                                                 len = sprintf(page, "%d\n", ((in ^ p) ? 1 : 0));
 684                                         }
 685                                 }
 686                                 break;
 687                         }
 688                         case PROC_MODEL:
 689                                 len = sprintf(page, "%s\n", platform.name);
 690                                 break;
 691                         case PROC_GPIOMASK:
 692                                 len = sprintf(page, "0x%04x\n", gpiomask);
 693                                 break;
 694                 }
 695         }
 696         len += 1;
 697
 698         if (*ppos < len) {
 699                 len = min_t(int, len - *ppos, count);
 700                 if (copy_to_user(buf, (page + *ppos), len)) {
 701                         kfree(page);
 702                         return -EFAULT;
 703                 }
 704                 *ppos += len;
 705         } else {
 706                 len = 0;
 707         }
 708
 709         return len;
 710 }
 711
 712
 713 static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
 714 {
 715 #ifdef LINUX_2_4
 716         struct inode *inode = file->f_dentry->d_inode;
 717         struct proc_dir_entry *dent = inode->u.generic_ip;
 718 #else
 719         struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
 720 #endif
 721         char *page;
 722         int ret = -EINVAL;
 723
 724         if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
 725                 return -ENOBUFS;
 726
 727         if (copy_from_user(page, buf, count)) {
 728                 kfree(page);
 729                 return -EINVAL;
 730         }
 731         page[count] = 0;
 732
 733         if (dent->data != NULL) {
 734                 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
 735                 switch (handler->type) {
 736                         case PROC_LED: {
 737                                 struct led_t *led = (struct led_t *) handler->ptr;
 738                                 int p = (led->polarity == NORMAL ? 0 : 1);
 739
 740                                 if (page[0] == 'f') {
 741                                         led->flash = 1;
 742                                         led_flash(0);
 743                                 } else {
 744                                         led->flash = 0;
 745                                         if (led->gpio & GPIO_TYPE_EXTIF) {
 746                                                 led->state = p ^ ((page[0] == '1') ? 1 : 0);
 747                                                 set_led_extif(led);
 748                                         } else {
 749                                                 gpio_outen(led->gpio, led->gpio);
 750                                                 gpio_control(led->gpio, 0);
 751                                                 gpio_out(led->gpio, ((p ^ (page[0] == '1')) ? led->gpio : 0));
 752                                         }
 753                                 }
 754                                 break;
 755                         }
 756                         case PROC_GPIOMASK:
 757                                 gpiomask = simple_strtoul(page, NULL, 0);
 758
 759                                 if (platform.buttons) {
 760                                         unregister_buttons(platform.buttons);
 761                                         register_buttons(platform.buttons);
 762                                 }
 763
 764                                 if (platform.leds) {
 765                                         unregister_leds(platform.leds);
 766                                         register_leds(platform.leds);
 767                                 }
 768                                 break;
 769                 }
 770                 ret = count;
 771         }
 772
 773         kfree(page);
 774         return ret;
 775 }
 776
 777 static int __init diag_init(void)
 778 {
 779         static struct proc_dir_entry *p;
 780         static struct platform_t *detected;
 781
 782         detected = platform_detect();
 783         if (!detected) {
 784                 printk(MODULE_NAME ": Router model not detected.\n");
 785                 return -ENODEV;
 786         }
 787         memcpy(&platform, detected, sizeof(struct platform_t));
 788
 789         printk(MODULE_NAME ": Detected '%s'\n", platform.name);
 790
 791         if (!(diag = proc_mkdir("diag", NULL))) {
 792                 printk(MODULE_NAME ": proc_mkdir on /proc/diag failed\n");
 793                 return -EINVAL;
 794         }
 795
 796         if ((p = create_proc_entry("model", S_IRUSR, diag))) {
 797                 p->data = (void *) &proc_model;
 798                 p->proc_fops = &diag_proc_fops;
 799         }
 800
 801         if ((p = create_proc_entry("gpiomask", S_IRUSR | S_IWUSR, diag))) {
 802                 p->data = (void *) &proc_gpiomask;
 803                 p->proc_fops = &diag_proc_fops;
 804         }
 805
 806         if (platform.buttons)
 807                 register_buttons(platform.buttons);
 808
 809         if (platform.leds)
 810                 register_leds(platform.leds);
 811
 812         return 0;
 813 }
 814
 815 static void __exit diag_exit(void)
 816 {
 817
 818         del_timer(&led_timer);
 819
 820         if (platform.buttons)
 821                 unregister_buttons(platform.buttons);
 822
 823         if (platform.leds)
 824                 unregister_leds(platform.leds);
 825
 826         remove_proc_entry("model", diag);
 827         remove_proc_entry("gpiomask", diag);
 828         remove_proc_entry("diag", NULL);
 829 }
 830
 831 module_init(diag_init);
 832 module_exit(diag_exit);
 833
 834 MODULE_AUTHOR("Mike Baker, Felix Fietkau / OpenWrt.org");
 835 MODULE_LICENSE("GPL");