package/broadcom-diag/src/diag.c

   1 /*
   2  * diag.c - GPIO interface driver for Broadcom boards
   3  *
   4  * Copyright (C) 2006 Mike Baker <mbm@openwrt.org>,
   5  *                    Felix Fietkau <nbd@openwrt.org>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20  *
  21  * $Id:$
  22  */
  23 #include <linux/module.h>
  24 #include <linux/pci.h>
  25 #include <linux/kmod.h>
  26 #include <linux/proc_fs.h>
  27 #include <linux/timer.h>
  28 #include <linux/version.h>
  29 #include <asm/uaccess.h>
  30
  31 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
  32 #include <linux/kobject.h>
  33 #include <linux/workqueue.h>
  34 #define hotplug_path uevent_helper
  35 #else
  36 #include <linux/tqueue.h>
  37 #define INIT_WORK INIT_TQUEUE
  38 #define schedule_work schedule_task
  39 #define work_struct tq_struct
  40 #endif
  41
  42 #include "gpio.h"
  43 #include "diag.h"
  44 #define getvar(str) (nvram_get(str)?:"")
  45
  46 static unsigned int gpiomask = 0;
  47 module_param(gpiomask, int, 0644);
  48
  49 enum {
  50         /* Linksys */
  51         WAP54GV1,
  52         WAP54GV3,
  53         WRT54GV1,
  54         WRT54G,
  55         WRTSL54GS,
  56         WRT54G3G,
  57
  58         /* ASUS */
  59         WLHDD,
  60         WL300G,
  61         WL500G,
  62         WL500GD,
  63         WL500GP,
  64         ASUS_4702,
  65
  66         /* Buffalo */
  67         WBR2_G54,
  68         WHR_G54S,
  69         WHR_HP_G54,
  70         WHR2_A54G54,
  71         WLA2_G54L,
  72         BUFFALO_UNKNOWN,
  73         BUFFALO_UNKNOWN_4710,
  74
  75         /* Siemens */
  76         SE505V1,
  77         SE505V2,
  78
  79         /* US Robotics */
  80         USR5461,
  81
  82         /* Dell */
  83         TM2300,
  84
  85         /* Motorola */
  86         WE800G,
  87         WR850GV1,
  88         WR850GV2V3,
  89
  90         /* Belkin */
  91         BELKIN_UNKNOWN,
  92 };
  93
  94 static struct platform_t __initdata platforms[] = {
  95         /* Linksys */
  96         [WAP54GV1] = {
  97                 .name           = "Linksys WAP54G V1",
  98                 .buttons        = {
  99                         { .name = "reset",      .gpio = 1 << 0 },
 100                 },
 101                 .leds           = {
 102                         { .name = "diag",       .gpio = 1 << 3 },
 103                         { .name = "wlan",       .gpio = 1 << 4 },
 104                 },
 105         },
 106         [WAP54GV3] = {
 107                 .name           = "Linksys WAP54G V3",
 108                 .buttons        = {
 109                         /* FIXME: verify this */
 110                         { .name = "reset",      .gpio = 1 << 7 },
 111                         { .name = "ses",        .gpio = 1 << 0 },
 112                 },
 113                 .leds           = {
 114                         /* FIXME: diag? */
 115                         { .name = "ses",        .gpio = 1 << 1 },
 116                 },
 117         },
 118         [WRT54GV1] = {
 119                 .name           = "Linksys WRT54G V1.x",
 120                 .buttons        = {
 121                         { .name = "reset",      .gpio = 1 << 6 },
 122                 },
 123                 .leds           = {
 124                         { .name = "diag",       .gpio = 0x13 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
 125                         { .name = "dmz",        .gpio = 0x12 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
 126                 },
 127         },
 128         [WRT54G] = {
 129                 .name           = "Linksys WRT54G/GS/GL",
 130                 .buttons        = {
 131                         { .name = "reset",      .gpio = 1 << 6 },
 132                         { .name = "ses",        .gpio = 1 << 4 },
 133                 },
 134                 .leds           = {
 135                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 136                         { .name = "dmz",        .gpio = 1 << 7, .polarity = REVERSE },
 137                         { .name = "ses_white",  .gpio = 1 << 2, .polarity = REVERSE },
 138                         { .name = "ses_orange", .gpio = 1 << 3, .polarity = REVERSE },
 139                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 140                 },
 141         },
 142         [WRTSL54GS] = {
 143                 .name           = "Linksys WRTSL54GS",
 144                 .buttons        = {
 145                         { .name = "reset",      .gpio = 1 << 6 },
 146                         { .name = "ses",        .gpio = 1 << 4 },
 147                 },
 148                 .leds           = {
 149                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 150                         { .name = "dmz",        .gpio = 1 << 7, .polarity = REVERSE },
 151                         { .name = "ses_white",  .gpio = 1 << 5, .polarity = REVERSE },
 152                         { .name = "ses_orange", .gpio = 1 << 7, .polarity = REVERSE },
 153                 },
 154         },
 155         [WRT54G3G] = {
 156                 .name           = "Linksys WRT54G3G",
 157                 .buttons        = {
 158                         { .name = "reset",      .gpio = 1 << 6 },
 159                         { .name = "3g",         .gpio = 1 << 4 },
 160                 },
 161                 .leds           = {
 162                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 163                         { .name = "dmz",        .gpio = 1 << 7, .polarity = REVERSE },
 164                         { .name = "3g_green",   .gpio = 1 << 2, .polarity = NORMAL },
 165                         { .name = "3g_blue",    .gpio = 1 << 3, .polarity = NORMAL },
 166                         { .name = "3g_blink",   .gpio = 1 << 5, .polarity = NORMAL },
 167                 },
 168         },
 169         /* Asus */
 170         [WLHDD] = {
 171                 .name           = "ASUS WL-HDD",
 172                 .buttons        = {
 173                         { .name = "reset",      .gpio = 1 << 6 },
 174                 },
 175                 .leds           = {
 176                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 177                 },
 178         },
 179         [WL300G] = {
 180                 .name           = "ASUS WL-300g",
 181                 .buttons        = {
 182                         { .name = "reset",      .gpio = 1 << 6 },
 183                 },
 184                 .leds           = {
 185                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 186                 },
 187         },
 188         [WL500G] = {
 189                 .name           = "ASUS WL-500g",
 190                 .buttons        = {
 191                         { .name = "reset",      .gpio = 1 << 6 },
 192                 },
 193                 .leds           = {
 194                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 195                 },
 196         },
 197         [WL500GD] = {
 198                 .name           = "ASUS WL-500g Deluxe",
 199                 .buttons        = {
 200                         { .name = "reset",      .gpio = 1 << 6 },
 201                 },
 202                 .leds           = {
 203                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 204                 },
 205         },
 206         [WL500GP] = {
 207                 .name           = "ASUS WL-500g Premium",
 208                 .buttons        = {
 209                         { .name = "reset",      .gpio = 1 << 0 },
 210                         { .name = "ses",        .gpio = 1 << 4 },
 211                 },
 212                 .leds           = {
 213                         { .name = "power",      .gpio = 1 << 1, .polarity = REVERSE },
 214                 },
 215         },
 216         [ASUS_4702] = {
 217                 .name           = "ASUS (unknown, BCM4702)",
 218                 .buttons        = {
 219                         { .name = "reset",      .gpio = 1 << 6 },
 220                 },
 221                 .leds           = {
 222                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 223                 },
 224         },
 225         /* Buffalo */
 226         [WHR_G54S] = {
 227                 .name           = "Buffalo WHR-G54S",
 228                 .buttons        = {
 229                         { .name = "reset",      .gpio = 1 << 4 },
 230                         { .name = "bridge",     .gpio = 1 << 5 },
 231                         { .name = "ses",        .gpio = 1 << 0 },
 232                 },
 233                 .leds           = {
 234                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 235                         { .name = "internal",   .gpio = 1 << 3, .polarity = REVERSE },
 236                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 237                         { .name = "bridge",     .gpio = 1 << 1, .polarity = REVERSE },
 238                 },
 239         },
 240         [WBR2_G54] = {
 241                 .name           = "Buffalo WBR2-G54",
 242                 /* FIXME: verify */
 243                 .buttons        = {
 244                         { .name = "reset",      .gpio = 1 << 7 },
 245                 },
 246                 .leds           = {
 247                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 248                 },
 249         },
 250         [WHR_HP_G54] = {
 251                 .name           = "Buffalo WHR-HP-G54",
 252                 .buttons        = {
 253                         { .name = "reset",      .gpio = 1 << 4 },
 254                         { .name = "bridge",     .gpio = 1 << 5 },
 255                         { .name = "ses",        .gpio = 1 << 0 },
 256                 },
 257                 .leds           = {
 258                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 259                         { .name = "bridge",     .gpio = 1 << 1, .polarity = REVERSE },
 260                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 261                 },
 262         },
 263         [WHR2_A54G54] = {
 264                 .name           = "Buffalo WHR2-A54G54",
 265                 .buttons        = {
 266                         { .name = "reset",      .gpio = 1 << 4 },
 267                 },
 268                 .leds           = {
 269                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 270                 },
 271         },
 272         [WLA2_G54L] = {
 273                 .name           = "Buffalo WLA2-G54L",
 274                 /* FIXME: verify */
 275                 .buttons        = {
 276                         { .name = "reset",      .gpio = 1 << 7 },
 277                 },
 278                 .leds           = {
 279                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 280                 },
 281         },
 282         [BUFFALO_UNKNOWN] = {
 283                 .name           = "Buffalo (unknown)",
 284                 .buttons        = {
 285                         { .name = "reset",      .gpio = 1 << 7 },
 286                 },
 287                 .leds           = {
 288                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 289                 },
 290         },
 291         [BUFFALO_UNKNOWN_4710] = {
 292                 .name           = "Buffalo (unknown, BCM4710)",
 293                 .buttons        = {
 294                         { .name = "reset",      .gpio = 1 << 4 },
 295                 },
 296                 .leds           = {
 297                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 298                 },
 299         },
 300         /* Siemens */
 301         [SE505V1] = {
 302                 .name           = "Siemens SE505 V1",
 303                 .buttons        = {
 304                         /* No usable buttons */
 305                 },
 306                 .leds           = {
 307                         { .name = "dmz",        .gpio = 1 << 4, .polarity = REVERSE },
 308                         { .name = "wlan",       .gpio = 1 << 3, .polarity = REVERSE },
 309                 },
 310         },
 311         [SE505V2] = {
 312                 .name           = "Siemens SE505 V2",
 313                 .buttons        = {
 314                         /* No usable buttons */
 315                 },
 316                 .leds           = {
 317                         { .name = "power",      .gpio = 1 << 5, .polarity = REVERSE },
 318                         { .name = "dmz",        .gpio = 1 << 0, .polarity = REVERSE },
 319                         { .name = "wlan",       .gpio = 1 << 3, .polarity = REVERSE },
 320                 },
 321         },
 322         /* US Robotics */
 323         [USR5461] = {
 324                 .name           = "U.S. Robotics USR5461",
 325                 .buttons        = {
 326                         /* No usable buttons */
 327                 },
 328                 .leds           = {
 329                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 330                         { .name = "printer",    .gpio = 1 << 1, .polarity = REVERSE },
 331                 },
 332         },
 333         /* Dell */
 334         [TM2300] = {
 335                 .name           = "Dell TrueMobile 2300",
 336                 .buttons        = {
 337                         { .name = "reset",      .gpio = 1 << 0 },
 338                 },
 339                 .leds           = {
 340                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 341                 },
 342         },
 343         /* Motorola */
 344         [WE800G] = {
 345                 .name           = "Motorola WE800G",
 346                 .buttons        = {
 347                         { .name = "reset",      .gpio = 1 << 0 },
 348                 },
 349                 .leds           = {
 350                         { .name = "power",      .gpio = 1 << 4, .polarity = NORMAL },
 351                         { .name = "diag",       .gpio = 1 << 2, .polarity = REVERSE },
 352                         { .name = "wlan_amber", .gpio = 1 << 1, .polarity = NORMAL },
 353                 },
 354         },
 355         [WR850GV1] = {
 356                 .name           = "Motorola WR850G V1",
 357                 .buttons        = {
 358                         { .name = "reset",      .gpio = 1 << 0 },
 359                 },
 360                 .leds           = {
 361                         { .name = "power",      .gpio = 1 << 4, .polarity = NORMAL },
 362                         { .name = "diag",       .gpio = 1 << 3, .polarity = REVERSE },
 363                         { .name = "dmz",        .gpio = 1 << 6, .polarity = NORMAL },
 364                         { .name = "wlan_red",   .gpio = 1 << 5, .polarity = REVERSE },
 365                         { .name = "wlan_green", .gpio = 1 << 7, .polarity = REVERSE },
 366                 },
 367         },
 368         [WR850GV2V3] = {
 369                 .name           = "Motorola WR850G V2/V3",
 370                 .buttons        = {
 371                         { .name = "reset",      .gpio = 1 << 5 },
 372                 },
 373                 .leds           = {
 374                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 375                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 376                         { .name = "dmz",        .gpio = 1 << 6, .polarity = REVERSE },
 377                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 378                 },
 379         },
 380         /* Belkin */
 381         [BELKIN_UNKNOWN] = {
 382                 .name           = "Belkin (unknown)",
 383                 /* FIXME: verify & add detection */
 384                 .buttons        = {
 385                         { .name = "reset",      .gpio = 1 << 7 },
 386                 },
 387                 .leds           = {
 388                         { .name = "power",      .gpio = 1 << 5, .polarity = NORMAL },
 389                         { .name = "wlan",       .gpio = 1 << 3, .polarity = NORMAL },
 390                         { .name = "connected",  .gpio = 1 << 0, .polarity = NORMAL },
 391                 },
 392         },
 393 };
 394
 395 static struct platform_t __init *platform_detect(void)
 396 {
 397         char *boardnum, *boardtype, *buf;
 398
 399         boardnum = getvar("boardnum");
 400         boardtype = getvar("boardtype");
 401         if (strncmp(getvar("pmon_ver"), "CFE", 3) == 0) {
 402                 /* CFE based - newer hardware */
 403                 if (!strcmp(boardnum, "42")) { /* Linksys */
 404                         if (!strcmp(boardtype, "0x0101"))
 405                                 return &platforms[WRT54G3G];
 406
 407                         if (!strcmp(getvar("et1phyaddr"),"5") && !strcmp(getvar("et1mdcport"), "1"))
 408                                 return &platforms[WRTSL54GS];
 409
 410                         /* default to WRT54G */
 411                         return &platforms[WRT54G];
 412                 }
 413
 414                 if (!strcmp(boardnum, "45")) { /* ASUS */
 415                         if (!strcmp(boardtype,"0x042f"))
 416                                 return &platforms[WL500GP];
 417                         else
 418                                 return &platforms[WL500GD];
 419                 }
 420
 421                 if (!strcmp(boardnum, "10496"))
 422                         return &platforms[USR5461];
 423         } else { /* PMON based - old stuff */
 424                 if (!strncmp(boardtype, "bcm94710dev", 11)) {
 425                         if (!strcmp(boardnum, "42"))
 426                                 return &platforms[WRT54GV1];
 427                         if (simple_strtoul(boardnum, NULL, 0) == 2)
 428                                 return &platforms[WAP54GV1];
 429                 }
 430                 if (!strncmp(getvar("hardware_version"), "WL500-", 6))
 431                         return &platforms[WL500G];
 432                 if (!strncmp(getvar("hardware_version"), "WL300-", 6)) {
 433                         /* Either WL-300g or WL-HDD, do more extensive checks */
 434                         if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
 435                                 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 1))
 436                                 return &platforms[WLHDD];
 437                         if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
 438                                 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 10))
 439                                 return &platforms[WL300G];
 440                 }
 441
 442                 /* unknown asus stuff, probably bcm4702 */
 443                 if (!strncmp(boardnum, "asusX", 5))
 444                         return &platforms[ASUS_4702];
 445
 446                 if ((simple_strtoul(getvar("GemtekPmonVer"), NULL, 0) == 9) &&
 447                         (simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 30)) {
 448                         if (!strncmp(getvar("ModelId"),"WE800G", 6))
 449                                 return &platforms[WE800G];
 450                         else
 451                                 return &platforms[WR850GV1];
 452                 }
 453         }
 454
 455         if ((buf = (nvram_get("melco_id") ?: nvram_get("buffalo_id")))) {
 456                 /* Buffalo hardware, check id for specific hardware matches */
 457                 if (!strcmp(buf, "29bb0332"))
 458                         return &platforms[WBR2_G54];
 459                 if (!strcmp(buf, "29129"))
 460                         return &platforms[WLA2_G54L];
 461                 if (!strcmp(buf, "30189"))
 462                         return &platforms[WHR_HP_G54];
 463                 if (!strcmp(buf, "30182"))
 464                         return &platforms[WHR_G54S];
 465                 if (!strcmp(buf, "290441dd"))
 466                         return &platforms[WHR2_A54G54];
 467         }
 468
 469         if (buf || !strcmp(boardnum, "00")) {/* probably buffalo */
 470                 if (!strncmp(boardtype, "bcm94710ap", 10))
 471                         return &platforms[BUFFALO_UNKNOWN_4710];
 472                 else
 473                         return &platforms[BUFFALO_UNKNOWN];
 474         }
 475
 476
 477         if (!strcmp(getvar("CFEver"), "MotoWRv203") ||
 478                 !strcmp(getvar("MOTO_BOARD_TYPE"), "WR_FEM1")) {
 479
 480                 return &platforms[WR850GV2V3];
 481         }
 482
 483         /* not found */
 484         return NULL;
 485 }
 486
 487 static void register_buttons(struct button_t *b)
 488 {
 489         for (; b->name; b++)
 490                 platform.button_mask |= b->gpio;
 491
 492         platform.button_mask &= ~gpiomask;
 493
 494         gpio_outen(platform.button_mask, 0);
 495         gpio_control(platform.button_mask, 0);
 496         platform.button_polarity = gpio_in() & platform.button_mask;
 497         gpio_intpolarity(platform.button_mask, platform.button_polarity);
 498         gpio_intmask(platform.button_mask, platform.button_mask);
 499
 500         gpio_set_irqenable(1, button_handler);
 501 }
 502
 503 static void unregister_buttons(struct button_t *b)
 504 {
 505         gpio_intmask(platform.button_mask, 0);
 506
 507         gpio_set_irqenable(0, button_handler);
 508 }
 509
 510 static void hotplug_button(struct event_t *event)
 511 {
 512 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
 513         call_usermodehelper (event->argv[0], event->argv, event->envp, 1);
 514 #else
 515         call_usermodehelper (event->argv[0], event->argv, event->envp);
 516 #endif
 517         kfree(event);
 518 }
 519
 520 static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
 521 {
 522         struct button_t *b;
 523         u32 in, changed;
 524
 525         in = gpio_in() & platform.button_mask;
 526         gpio_intpolarity(platform.button_mask, in);
 527         changed = platform.button_polarity ^ in;
 528         platform.button_polarity = in;
 529
 530         for (b = platform.buttons; b->name; b++) {
 531                 struct event_t *event;
 532
 533                 if (!(b->gpio & changed)) continue;
 534
 535                 b->pressed ^= 1;
 536
 537                 if ((event = (struct event_t *)kmalloc (sizeof(struct event_t), GFP_ATOMIC))) {
 538                         int i;
 539                         char *scratch = event->buf;
 540
 541                         i = 0;
 542                         event->argv[i++] = hotplug_path;
 543                         event->argv[i++] = "button";
 544                         event->argv[i] = 0;
 545
 546                         i = 0;
 547                         event->envp[i++] = "HOME=/";
 548                         event->envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
 549                         event->envp[i++] = scratch;
 550                         scratch += sprintf (scratch, "ACTION=%s", b->pressed?"pressed":"released") + 1;
 551                         event->envp[i++] = scratch;
 552                         scratch += sprintf (scratch, "BUTTON=%s", b->name) + 1;
 553                         event->envp[i++] = scratch;
 554                         scratch += sprintf (scratch, "SEEN=%ld", (jiffies - b->seen)/HZ) + 1;
 555                         event->envp[i] = 0;
 556
 557                         INIT_WORK(&event->wq, (void *)(void *)hotplug_button, (void *)event);
 558                         schedule_work(&event->wq);
 559                 }
 560
 561                 b->seen = jiffies;
 562         }
 563         return IRQ_HANDLED;
 564 }
 565
 566 static void register_leds(struct led_t *l)
 567 {
 568         struct proc_dir_entry *p;
 569         u32 mask = 0;
 570         u32 val = 0;
 571
 572         leds = proc_mkdir("led", diag);
 573         if (!leds)
 574                 return;
 575
 576         for(; l->name; l++) {
 577                 if (l->gpio & gpiomask)
 578                         continue;
 579
 580                 if (l->gpio & GPIO_TYPE_EXTIF) {
 581                         l->state = 0;
 582                         set_led_extif(l);
 583                 } else {
 584                         mask |= l->gpio;
 585                         val |= (l->polarity == NORMAL)?0:l->gpio;
 586                 }
 587
 588                 if ((p = create_proc_entry(l->name, S_IRUSR, leds))) {
 589                         l->proc.type = PROC_LED;
 590                         l->proc.ptr = l;
 591                         p->data = (void *) &l->proc;
 592                         p->proc_fops = &diag_proc_fops;
 593                 }
 594         }
 595
 596         gpio_outen(mask, mask);
 597         gpio_control(mask, 0);
 598         gpio_out(mask, val);
 599 }
 600
 601 static void unregister_leds(struct led_t *l)
 602 {
 603         for(; l->name; l++)
 604                 remove_proc_entry(l->name, leds);
 605
 606         remove_proc_entry("led", diag);
 607 }
 608
 609 static void set_led_extif(struct led_t *led)
 610 {
 611         gpio_set_extif(led->gpio, led->state);
 612 }
 613
 614 static void led_flash(unsigned long dummy) {
 615         struct led_t *l;
 616         u32 mask = 0;
 617         u8 extif_blink = 0;
 618
 619         for (l = platform.leds; l->name; l++) {
 620                 if (l->flash) {
 621                         if (l->gpio & GPIO_TYPE_EXTIF) {
 622                                 extif_blink = 1;
 623                                 l->state = !l->state;
 624                                 set_led_extif(l);
 625                         } else {
 626                                 mask |= l->gpio;
 627                         }
 628                 }
 629         }
 630
 631         mask &= ~gpiomask;
 632         if (mask) {
 633                 u32 val = ~gpio_in();
 634
 635                 gpio_outen(mask, mask);
 636                 gpio_control(mask, 0);
 637                 gpio_out(mask, val);
 638         }
 639         if (mask || extif_blink) {
 640                 mod_timer(&led_timer, jiffies + FLASH_TIME);
 641         }
 642 }
 643
 644 static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
 645 {
 646 #ifdef LINUX_2_4
 647         struct inode *inode = file->f_dentry->d_inode;
 648         struct proc_dir_entry *dent = inode->u.generic_ip;
 649 #else
 650         struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
 651 #endif
 652         char *page;
 653         int len = 0;
 654
 655         if ((page = kmalloc(1024, GFP_KERNEL)) == NULL)
 656                 return -ENOBUFS;
 657
 658         if (dent->data != NULL) {
 659                 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
 660                 switch (handler->type) {
 661                         case PROC_LED: {
 662                                 struct led_t * led = (struct led_t *) handler->ptr;
 663                                 if (led->flash) {
 664                                         len = sprintf(page, "f\n");
 665                                 } else {
 666                                         if (led->gpio & GPIO_TYPE_EXTIF) {
 667                                                 len = sprintf(page, "%d\n", led->state);
 668                                         } else {
 669                                                 u32 in = (gpio_in() & led->gpio ? 1 : 0);
 670                                                 u8 p = (led->polarity == NORMAL ? 0 : 1);
 671                                                 len = sprintf(page, "%d\n", ((in ^ p) ? 1 : 0));
 672                                         }
 673                                 }
 674                                 break;
 675                         }
 676                         case PROC_MODEL:
 677                                 len = sprintf(page, "%s\n", platform.name);
 678                                 break;
 679                         case PROC_GPIOMASK:
 680                                 len = sprintf(page, "0x%04x\n", gpiomask);
 681                                 break;
 682                 }
 683         }
 684         len += 1;
 685
 686         if (*ppos < len) {
 687                 len = min_t(int, len - *ppos, count);
 688                 if (copy_to_user(buf, (page + *ppos), len)) {
 689                         kfree(page);
 690                         return -EFAULT;
 691                 }
 692                 *ppos += len;
 693         } else {
 694                 len = 0;
 695         }
 696
 697         return len;
 698 }
 699
 700
 701 static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
 702 {
 703 #ifdef LINUX_2_4
 704         struct inode *inode = file->f_dentry->d_inode;
 705         struct proc_dir_entry *dent = inode->u.generic_ip;
 706 #else
 707         struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
 708 #endif
 709         char *page;
 710         int ret = -EINVAL;
 711
 712         if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
 713                 return -ENOBUFS;
 714
 715         if (copy_from_user(page, buf, count)) {
 716                 kfree(page);
 717                 return -EINVAL;
 718         }
 719         page[count] = 0;
 720
 721         if (dent->data != NULL) {
 722                 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
 723                 switch (handler->type) {
 724                         case PROC_LED: {
 725                                 struct led_t *led = (struct led_t *) handler->ptr;
 726                                 int p = (led->polarity == NORMAL ? 0 : 1);
 727
 728                                 if (page[0] == 'f') {
 729                                         led->flash = 1;
 730                                         led_flash(0);
 731                                 } else {
 732                                         led->flash = 0;
 733                                         if (led->gpio & GPIO_TYPE_EXTIF) {
 734                                                 led->state = p ^ ((page[0] == '1') ? 1 : 0);
 735                                                 set_led_extif(led);
 736                                         } else {
 737                                                 gpio_outen(led->gpio, led->gpio);
 738                                                 gpio_control(led->gpio, 0);
 739                                                 gpio_out(led->gpio, ((p ^ (page[0] == '1')) ? led->gpio : 0));
 740                                         }
 741                                 }
 742                                 break;
 743                         }
 744                         case PROC_GPIOMASK:
 745                                 gpiomask = simple_strtoul(page, NULL, 0);
 746
 747                                 if (platform.buttons) {
 748                                         unregister_buttons(platform.buttons);
 749                                         register_buttons(platform.buttons);
 750                                 }
 751
 752                                 if (platform.leds) {
 753                                         unregister_leds(platform.leds);
 754                                         register_leds(platform.leds);
 755                                 }
 756                                 break;
 757                 }
 758                 ret = count;
 759         }
 760
 761         kfree(page);
 762         return ret;
 763 }
 764
 765 static int __init diag_init(void)
 766 {
 767         static struct proc_dir_entry *p;
 768         static struct platform_t *detected;
 769
 770         detected = platform_detect();
 771         if (!detected) {
 772                 printk(MODULE_NAME ": Router model not detected.\n");
 773                 return -ENODEV;
 774         }
 775         memcpy(&platform, detected, sizeof(struct platform_t));
 776
 777         printk(MODULE_NAME ": Detected '%s'\n", platform.name);
 778
 779         if (!(diag = proc_mkdir("diag", NULL))) {
 780                 printk(MODULE_NAME ": proc_mkdir on /proc/diag failed\n");
 781                 return -EINVAL;
 782         }
 783
 784         if ((p = create_proc_entry("model", S_IRUSR, diag))) {
 785                 p->data = (void *) &proc_model;
 786                 p->proc_fops = &diag_proc_fops;
 787         }
 788
 789         if ((p = create_proc_entry("gpiomask", S_IRUSR | S_IWUSR, diag))) {
 790                 p->data = (void *) &proc_gpiomask;
 791                 p->proc_fops = &diag_proc_fops;
 792         }
 793
 794         if (platform.buttons)
 795                 register_buttons(platform.buttons);
 796
 797         if (platform.leds)
 798                 register_leds(platform.leds);
 799
 800         return 0;
 801 }
 802
 803 static void __exit diag_exit(void)
 804 {
 805
 806         del_timer(&led_timer);
 807
 808         if (platform.buttons)
 809                 unregister_buttons(platform.buttons);
 810
 811         if (platform.leds)
 812                 unregister_leds(platform.leds);
 813
 814         remove_proc_entry("model", diag);
 815         remove_proc_entry("gpiomask", diag);
 816         remove_proc_entry("diag", NULL);
 817 }
 818
 819 module_init(diag_init);
 820 module_exit(diag_exit);
 821
 822 MODULE_AUTHOR("Mike Baker, Felix Fietkau / OpenWrt.org");
 823 MODULE_LICENSE("GPL");