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         WRT350N,
  58
  59         /* ASUS */
  60         WLHDD,
  61         WL300G,
  62         WL500G,
  63         WL500GD,
  64         WL500GP,
  65         ASUS_4702,
  66
  67         /* Buffalo */
  68         WBR2_G54,
  69         WHR_G54S,
  70         WHR_HP_G54,
  71         WHR2_A54G54,
  72         WLA2_G54L,
  73         WZR_G300N,
  74         WZR_RS_G54,
  75         WZR_RS_G54HP,
  76         BUFFALO_UNKNOWN,
  77         BUFFALO_UNKNOWN_4710,
  78
  79         /* Siemens */
  80         SE505V1,
  81         SE505V2,
  82
  83         /* US Robotics */
  84         USR5461,
  85
  86         /* Dell */
  87         TM2300,
  88
  89         /* Motorola */
  90         WE800G,
  91         WR850GV1,
  92         WR850GV2V3,
  93
  94         /* Belkin */
  95         BELKIN_UNKNOWN,
  96
  97         /* Netgear */
  98         WGT634U,
  99
 100         /* Trendware */
 101         TEW411BRPP,
 102 };
 103
 104 static struct platform_t __initdata platforms[] = {
 105         /* Linksys */
 106         [WAP54GV1] = {
 107                 .name           = "Linksys WAP54G V1",
 108                 .buttons        = {
 109                         { .name = "reset",      .gpio = 1 << 0 },
 110                 },
 111                 .leds           = {
 112                         { .name = "diag",       .gpio = 1 << 3 },
 113                         { .name = "wlan",       .gpio = 1 << 4 },
 114                 },
 115         },
 116         [WAP54GV3] = {
 117                 .name           = "Linksys WAP54G V3",
 118                 .buttons        = {
 119                         /* FIXME: verify this */
 120                         { .name = "reset",      .gpio = 1 << 7 },
 121                         { .name = "ses",        .gpio = 1 << 0 },
 122                 },
 123                 .leds           = {
 124                         /* FIXME: diag? */
 125                         { .name = "ses",        .gpio = 1 << 1 },
 126                 },
 127         },
 128         [WRT54GV1] = {
 129                 .name           = "Linksys WRT54G V1.x",
 130                 .buttons        = {
 131                         { .name = "reset",      .gpio = 1 << 6 },
 132                 },
 133                 .leds           = {
 134                         { .name = "diag",       .gpio = 0x13 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
 135                         { .name = "dmz",        .gpio = 0x12 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
 136                 },
 137         },
 138         [WRT54G] = {
 139                 .name           = "Linksys WRT54G/GS/GL",
 140                 .buttons        = {
 141                         { .name = "reset",      .gpio = 1 << 6 },
 142                         { .name = "ses",        .gpio = 1 << 4 },
 143                 },
 144                 .leds           = {
 145                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 146                         { .name = "dmz",        .gpio = 1 << 7, .polarity = REVERSE },
 147                         { .name = "ses_white",  .gpio = 1 << 2, .polarity = REVERSE },
 148                         { .name = "ses_orange", .gpio = 1 << 3, .polarity = REVERSE },
 149                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 150                 },
 151         },
 152         [WRTSL54GS] = {
 153                 .name           = "Linksys WRTSL54GS",
 154                 .buttons        = {
 155                         { .name = "reset",      .gpio = 1 << 6 },
 156                         { .name = "ses",        .gpio = 1 << 4 },
 157                 },
 158                 .leds           = {
 159                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 160                         { .name = "dmz",        .gpio = 1 << 0, .polarity = REVERSE },
 161                         { .name = "ses_white",  .gpio = 1 << 5, .polarity = REVERSE },
 162                         { .name = "ses_orange", .gpio = 1 << 7, .polarity = REVERSE },
 163                 },
 164         },
 165         [WRT54G3G] = {
 166                 .name           = "Linksys WRT54G3G",
 167                 .buttons        = {
 168                         { .name = "reset",      .gpio = 1 << 6 },
 169                         { .name = "3g",         .gpio = 1 << 4 },
 170                 },
 171                 .leds           = {
 172                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 173                         { .name = "dmz",        .gpio = 1 << 7, .polarity = REVERSE },
 174                         { .name = "3g_green",   .gpio = 1 << 2, .polarity = NORMAL },
 175                         { .name = "3g_blue",    .gpio = 1 << 3, .polarity = NORMAL },
 176                         { .name = "3g_blink",   .gpio = 1 << 5, .polarity = NORMAL },
 177                 },
 178         },
 179         [WRT350N] = {
 180                 .name           = "Linksys WRT350N",
 181                 .buttons        = {
 182                         { .name = "reset",      .gpio = 1 << 6 },
 183                         { .name = "ses",        .gpio = 1 << 8 },
 184                 },
 185                 .leds           = {
 186                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 187                         { .name = "ses",        .gpio = 1 << 3, .polarity = REVERSE },
 188                 },
 189         },
 190         /* Asus */
 191         [WLHDD] = {
 192                 .name           = "ASUS WL-HDD",
 193                 .buttons        = {
 194                         { .name = "reset",      .gpio = 1 << 6 },
 195                 },
 196                 .leds           = {
 197                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 198                 },
 199         },
 200         [WL300G] = {
 201                 .name           = "ASUS WL-300g",
 202                 .buttons        = {
 203                         { .name = "reset",      .gpio = 1 << 6 },
 204                 },
 205                 .leds           = {
 206                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 207                 },
 208         },
 209         [WL500G] = {
 210                 .name           = "ASUS WL-500g",
 211                 .buttons        = {
 212                         { .name = "reset",      .gpio = 1 << 6 },
 213                 },
 214                 .leds           = {
 215                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 216                 },
 217         },
 218         [WL500GD] = {
 219                 .name           = "ASUS WL-500g Deluxe",
 220                 .buttons        = {
 221                         { .name = "reset",      .gpio = 1 << 6 },
 222                 },
 223                 .leds           = {
 224                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 225                 },
 226         },
 227         [WL500GP] = {
 228                 .name           = "ASUS WL-500g Premium",
 229                 .buttons        = {
 230                         { .name = "reset",      .gpio = 1 << 0 },
 231                         { .name = "ses",        .gpio = 1 << 4 },
 232                 },
 233                 .leds           = {
 234                         { .name = "power",      .gpio = 1 << 1, .polarity = REVERSE },
 235                 },
 236         },
 237         [ASUS_4702] = {
 238                 .name           = "ASUS (unknown, BCM4702)",
 239                 .buttons        = {
 240                         { .name = "reset",      .gpio = 1 << 6 },
 241                 },
 242                 .leds           = {
 243                         { .name = "power",      .gpio = 1 << 0, .polarity = REVERSE },
 244                 },
 245         },
 246         /* Buffalo */
 247         [WHR_G54S] = {
 248                 .name           = "Buffalo WHR-G54S",
 249                 .buttons        = {
 250                         { .name = "reset",      .gpio = 1 << 4 },
 251                         { .name = "bridge",     .gpio = 1 << 5 },
 252                         { .name = "ses",        .gpio = 1 << 0 },
 253                 },
 254                 .leds           = {
 255                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 256                         { .name = "internal",   .gpio = 1 << 3, .polarity = REVERSE },
 257                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 258                         { .name = "bridge",     .gpio = 1 << 1, .polarity = REVERSE },
 259                 },
 260         },
 261         [WBR2_G54] = {
 262                 .name           = "Buffalo WBR2-G54",
 263                 /* FIXME: verify */
 264                 .buttons        = {
 265                         { .name = "reset",      .gpio = 1 << 7 },
 266                 },
 267                 .leds           = {
 268                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 269                 },
 270         },
 271         [WHR_HP_G54] = {
 272                 .name           = "Buffalo WHR-HP-G54",
 273                 .buttons        = {
 274                         { .name = "reset",      .gpio = 1 << 4 },
 275                         { .name = "bridge",     .gpio = 1 << 5 },
 276                         { .name = "ses",        .gpio = 1 << 0 },
 277                 },
 278                 .leds           = {
 279                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 280                         { .name = "bridge",     .gpio = 1 << 1, .polarity = REVERSE },
 281                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 282                 },
 283         },
 284         [WHR2_A54G54] = {
 285                 .name           = "Buffalo WHR2-A54G54",
 286                 .buttons        = {
 287                         { .name = "reset",      .gpio = 1 << 4 },
 288                 },
 289                 .leds           = {
 290                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 291                 },
 292         },
 293         [WLA2_G54L] = {
 294                 .name           = "Buffalo WLA2-G54L",
 295                 /* FIXME: verify */
 296                 .buttons        = {
 297                         { .name = "reset",      .gpio = 1 << 7 },
 298                 },
 299                 .leds           = {
 300                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 301                 },
 302         },
 303         [WZR_G300N] = {
 304                 .name           = "Buffalo WZR-G300N",
 305                 .buttons        = {
 306                         { .name = "reset",      .gpio = 1 << 4 },
 307                 },
 308                 .leds           = {
 309                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 310                         { .name = "bridge",     .gpio = 1 << 1, .polarity = REVERSE },
 311                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 312                 },
 313         },
 314         [WZR_RS_G54] = {
 315                 .name           = "Buffalo WZR-RS-G54",
 316                 .buttons        = {
 317                         { .name = "ses",        .gpio = 1 << 0 },
 318                         { .name = "reset",      .gpio = 1 << 4 },
 319                 },
 320                 .leds           = {
 321                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 322                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 323                         { .name = "vpn",        .gpio = 1 << 1, .polarity = REVERSE },
 324                 },
 325         },
 326         [WZR_RS_G54HP] = {
 327                 .name           = "Buffalo WZR-RS-G54HP",
 328                 .buttons        = {
 329                         { .name = "ses",        .gpio = 1 << 0 },
 330                         { .name = "reset",      .gpio = 1 << 4 },
 331                 },
 332                 .leds           = {
 333                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 334                         { .name = "ses",        .gpio = 1 << 6, .polarity = REVERSE },
 335                         { .name = "vpn",        .gpio = 1 << 1, .polarity = REVERSE },
 336                 },
 337         },
 338         [BUFFALO_UNKNOWN] = {
 339                 .name           = "Buffalo (unknown)",
 340                 .buttons        = {
 341                         { .name = "reset",      .gpio = 1 << 7 },
 342                 },
 343                 .leds           = {
 344                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 345                 },
 346         },
 347         [BUFFALO_UNKNOWN_4710] = {
 348                 .name           = "Buffalo (unknown, BCM4710)",
 349                 .buttons        = {
 350                         { .name = "reset",      .gpio = 1 << 4 },
 351                 },
 352                 .leds           = {
 353                         { .name = "diag",       .gpio = 1 << 1, .polarity = REVERSE },
 354                 },
 355         },
 356         /* Siemens */
 357         [SE505V1] = {
 358                 .name           = "Siemens SE505 V1",
 359                 .buttons        = {
 360                         /* No usable buttons */
 361                 },
 362                 .leds           = {
 363                         { .name = "dmz",        .gpio = 1 << 4, .polarity = REVERSE },
 364                         { .name = "wlan",       .gpio = 1 << 3, .polarity = REVERSE },
 365                 },
 366         },
 367         [SE505V2] = {
 368                 .name           = "Siemens SE505 V2",
 369                 .buttons        = {
 370                         /* No usable buttons */
 371                 },
 372                 .leds           = {
 373                         { .name = "power",      .gpio = 1 << 5, .polarity = REVERSE },
 374                         { .name = "dmz",        .gpio = 1 << 0, .polarity = REVERSE },
 375                         { .name = "wlan",       .gpio = 1 << 3, .polarity = REVERSE },
 376                 },
 377         },
 378         /* US Robotics */
 379         [USR5461] = {
 380                 .name           = "U.S. Robotics USR5461",
 381                 .buttons        = {
 382                         /* No usable buttons */
 383                 },
 384                 .leds           = {
 385                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 386                         { .name = "printer",    .gpio = 1 << 1, .polarity = REVERSE },
 387                 },
 388         },
 389         /* Dell */
 390         [TM2300] = {
 391                 .name           = "Dell TrueMobile 2300",
 392                 .buttons        = {
 393                         { .name = "reset",      .gpio = 1 << 0 },
 394                 },
 395                 .leds           = {
 396                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 397                 },
 398         },
 399         /* Motorola */
 400         [WE800G] = {
 401                 .name           = "Motorola WE800G",
 402                 .buttons        = {
 403                         { .name = "reset",      .gpio = 1 << 0 },
 404                 },
 405                 .leds           = {
 406                         { .name = "power",      .gpio = 1 << 4, .polarity = NORMAL },
 407                         { .name = "diag",       .gpio = 1 << 2, .polarity = REVERSE },
 408                         { .name = "wlan_amber", .gpio = 1 << 1, .polarity = NORMAL },
 409                 },
 410         },
 411         [WR850GV1] = {
 412                 .name           = "Motorola WR850G V1",
 413                 .buttons        = {
 414                         { .name = "reset",      .gpio = 1 << 0 },
 415                 },
 416                 .leds           = {
 417                         { .name = "power",      .gpio = 1 << 4, .polarity = NORMAL },
 418                         { .name = "diag",       .gpio = 1 << 3, .polarity = REVERSE },
 419                         { .name = "dmz",        .gpio = 1 << 6, .polarity = NORMAL },
 420                         { .name = "wlan_red",   .gpio = 1 << 5, .polarity = REVERSE },
 421                         { .name = "wlan_green", .gpio = 1 << 7, .polarity = REVERSE },
 422                 },
 423         },
 424         [WR850GV2V3] = {
 425                 .name           = "Motorola WR850G V2/V3",
 426                 .buttons        = {
 427                         { .name = "reset",      .gpio = 1 << 5 },
 428                 },
 429                 .leds           = {
 430                         { .name = "power",      .gpio = 1 << 1, .polarity = NORMAL },
 431                         { .name = "wlan",       .gpio = 1 << 0, .polarity = REVERSE },
 432                         { .name = "dmz",        .gpio = 1 << 6, .polarity = REVERSE },
 433                         { .name = "diag",       .gpio = 1 << 7, .polarity = REVERSE },
 434                 },
 435         },
 436         /* Belkin */
 437         [BELKIN_UNKNOWN] = {
 438                 .name           = "Belkin (unknown)",
 439                 /* FIXME: verify & add detection */
 440                 .buttons        = {
 441                         { .name = "reset",      .gpio = 1 << 7 },
 442                 },
 443                 .leds           = {
 444                         { .name = "power",      .gpio = 1 << 5, .polarity = NORMAL },
 445                         { .name = "wlan",       .gpio = 1 << 3, .polarity = NORMAL },
 446                         { .name = "connected",  .gpio = 1 << 0, .polarity = NORMAL },
 447                 },
 448         },
 449         /* Netgear */
 450         [WGT634U] = {
 451                 .name           = "Netgear WGT634U",
 452                 .buttons        = {
 453                         { .name = "reset",      .gpio = 1 << 2 },
 454                 },
 455                 .leds           = {
 456                         { .name = "power",      .gpio = 1 << 3, .polarity = REVERSE },
 457                 },
 458         },
 459         /* Trendware */
 460         [TEW411BRPP] = {
 461                 .name           = "Trendware TEW411BRP+",
 462                 .buttons        = {
 463                         { /* No usable buttons */ },
 464                 },
 465                 .leds           = {
 466                         { .name = "power",      .gpio = 1 << 7, .polarity = NORMAL },
 467                         { .name = "wlan",       .gpio = 1 << 1, .polarity = NORMAL },
 468                         { .name = "bridge",     .gpio = 1 << 6, .polarity = NORMAL },
 469                 },
 470         },
 471 };
 472
 473 static struct platform_t __init *platform_detect(void)
 474 {
 475         char *boardnum, *boardtype, *buf;
 476
 477         boardnum = getvar("boardnum");
 478         boardtype = getvar("boardtype");
 479         if (strncmp(getvar("pmon_ver"), "CFE", 3) == 0) {
 480                 /* CFE based - newer hardware */
 481                 if (!strcmp(boardnum, "42")) { /* Linksys */
 482                         if (!strcmp(boardtype, "0x478") && !strcmp(getvar("cardbus"), 1))
 483                                 return &platforms[WRT350N];
 484
 485                         if (!strcmp(boardtype, "0x0101") && !strcmp(getvar("boot_ver"), "v3.6"))
 486                                 return &platforms[WRT54G3G];
 487
 488                         if (!strcmp(getvar("et1phyaddr"),"5") && !strcmp(getvar("et1mdcport"), "1"))
 489                                 return &platforms[WRTSL54GS];
 490
 491                         /* default to WRT54G */
 492                         return &platforms[WRT54G];
 493                 }
 494
 495                 if (!strcmp(boardnum, "45")) { /* ASUS */
 496                         if (!strcmp(boardtype,"0x042f"))
 497                                 return &platforms[WL500GP];
 498                         else
 499                                 return &platforms[WL500GD];
 500                 }
 501
 502                 if (!strcmp(boardnum, "10496"))
 503                         return &platforms[USR5461];
 504         } else { /* PMON based - old stuff */
 505                 if ((simple_strtoul(getvar("GemtekPmonVer"), NULL, 0) == 9) &&
 506                         (simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 30)) {
 507                         if (!strncmp(getvar("ModelId"),"WE800G", 6))
 508                                 return &platforms[WE800G];
 509                         else
 510                                 return &platforms[WR850GV1];
 511                 }
 512                 if (!strncmp(boardtype, "bcm94710dev", 11)) {
 513                         if (!strcmp(boardnum, "42"))
 514                                 return &platforms[WRT54GV1];
 515                         if (simple_strtoul(boardnum, NULL, 0) == 2)
 516                                 return &platforms[WAP54GV1];
 517                 }
 518                 if (!strncmp(getvar("hardware_version"), "WL500-", 6))
 519                         return &platforms[WL500G];
 520                 if (!strncmp(getvar("hardware_version"), "WL300-", 6)) {
 521                         /* Either WL-300g or WL-HDD, do more extensive checks */
 522                         if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
 523                                 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 1))
 524                                 return &platforms[WLHDD];
 525                         if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
 526                                 (simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 10))
 527                                 return &platforms[WL300G];
 528                 }
 529
 530                 /* unknown asus stuff, probably bcm4702 */
 531                 if (!strncmp(boardnum, "asusX", 5))
 532                         return &platforms[ASUS_4702];
 533         }
 534
 535         if ((buf = (nvram_get("melco_id") ?: nvram_get("buffalo_id")))) {
 536                 /* Buffalo hardware, check id for specific hardware matches */
 537                 if (!strcmp(buf, "29bb0332"))
 538                         return &platforms[WBR2_G54];
 539                 if (!strcmp(buf, "29129"))
 540                         return &platforms[WLA2_G54L];
 541                 if (!strcmp(buf, "30189"))
 542                         return &platforms[WHR_HP_G54];
 543                 if (!strcmp(buf, "30182"))
 544                         return &platforms[WHR_G54S];
 545                 if (!strcmp(buf, "290441dd"))
 546                         return &platforms[WHR2_A54G54];
 547                 if (!strcmp(buf, "31120"))
 548                         return &platforms[WZR_G300N];
 549                 if (!strcmp(buf, "30083"))
 550                         return &platforms[WZR_RS_G54];
 551                 if (!strcmp(buf, "30103"))
 552                         return &platforms[WZR_RS_G54HP];
 553         }
 554
 555         if (buf || !strcmp(boardnum, "00")) {/* probably buffalo */
 556                 if (!strncmp(boardtype, "bcm94710ap", 10))
 557                         return &platforms[BUFFALO_UNKNOWN_4710];
 558                 else
 559                         return &platforms[BUFFALO_UNKNOWN];
 560         }
 561
 562         if (!strcmp(getvar("CFEver"), "MotoWRv203") ||
 563                 !strcmp(getvar("MOTO_BOARD_TYPE"), "WR_FEM1")) {
 564
 565                 return &platforms[WR850GV2V3];
 566         }
 567
 568         if (!strcmp(boardnum, "44")) {  /* Trendware TEW-411BRP+ */
 569                 return &platforms[TEW411BRPP];
 570         }
 571
 572         /* not found */
 573         return NULL;
 574 }
 575
 576 static void register_buttons(struct button_t *b)
 577 {
 578         for (; b->name; b++)
 579                 platform.button_mask |= b->gpio;
 580
 581         platform.button_mask &= ~gpiomask;
 582
 583         gpio_outen(platform.button_mask, 0);
 584         gpio_control(platform.button_mask, 0);
 585         platform.button_polarity = gpio_in() & platform.button_mask;
 586         gpio_intpolarity(platform.button_mask, platform.button_polarity);
 587         gpio_intmask(platform.button_mask, platform.button_mask);
 588
 589         gpio_set_irqenable(1, button_handler);
 590 }
 591
 592 static void unregister_buttons(struct button_t *b)
 593 {
 594         gpio_intmask(platform.button_mask, 0);
 595
 596         gpio_set_irqenable(0, button_handler);
 597 }
 598
 599 static void hotplug_button(struct event_t *event)
 600 {
 601 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
 602         call_usermodehelper (event->argv[0], event->argv, event->envp, 1);
 603 #else
 604         call_usermodehelper (event->argv[0], event->argv, event->envp);
 605 #endif
 606         kfree(event);
 607 }
 608
 609 static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
 610 {
 611         struct button_t *b;
 612         u32 in, changed;
 613
 614         in = gpio_in() & platform.button_mask;
 615         gpio_intpolarity(platform.button_mask, in);
 616         changed = platform.button_polarity ^ in;
 617         platform.button_polarity = in;
 618
 619         changed &= ~gpio_outen(0, 0);
 620
 621         for (b = platform.buttons; b->name; b++) {
 622                 struct event_t *event;
 623
 624                 if (!(b->gpio & changed)) continue;
 625
 626                 b->pressed ^= 1;
 627
 628                 if ((event = (struct event_t *)kmalloc (sizeof(struct event_t), GFP_ATOMIC))) {
 629                         int i;
 630                         char *scratch = event->buf;
 631
 632                         i = 0;
 633                         event->argv[i++] = hotplug_path;
 634                         event->argv[i++] = "button";
 635                         event->argv[i] = 0;
 636
 637                         i = 0;
 638                         event->envp[i++] = "HOME=/";
 639                         event->envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
 640                         event->envp[i++] = scratch;
 641                         scratch += sprintf (scratch, "ACTION=%s", b->pressed?"pressed":"released") + 1;
 642                         event->envp[i++] = scratch;
 643                         scratch += sprintf (scratch, "BUTTON=%s", b->name) + 1;
 644                         event->envp[i++] = scratch;
 645                         scratch += sprintf (scratch, "SEEN=%ld", (jiffies - b->seen)/HZ) + 1;
 646                         event->envp[i] = 0;
 647
 648                         INIT_WORK(&event->wq, (void *)(void *)hotplug_button, (void *)event);
 649                         schedule_work(&event->wq);
 650                 }
 651
 652                 b->seen = jiffies;
 653         }
 654         return IRQ_HANDLED;
 655 }
 656
 657 static void register_leds(struct led_t *l)
 658 {
 659         struct proc_dir_entry *p;
 660         u32 mask = 0;
 661         u32 val = 0;
 662
 663         leds = proc_mkdir("led", diag);
 664         if (!leds)
 665                 return;
 666
 667         for(; l->name; l++) {
 668                 if (l->gpio & gpiomask)
 669                         continue;
 670
 671                 if (l->gpio & GPIO_TYPE_EXTIF) {
 672                         l->state = 0;
 673                         set_led_extif(l);
 674                 } else {
 675                         mask |= l->gpio;
 676                         val |= (l->polarity == NORMAL)?0:l->gpio;
 677                 }
 678
 679                 if ((p = create_proc_entry(l->name, S_IRUSR, leds))) {
 680                         l->proc.type = PROC_LED;
 681                         l->proc.ptr = l;
 682                         p->data = (void *) &l->proc;
 683                         p->proc_fops = &diag_proc_fops;
 684                 }
 685         }
 686
 687         gpio_outen(mask, mask);
 688         gpio_control(mask, 0);
 689         gpio_out(mask, val);
 690 }
 691
 692 static void unregister_leds(struct led_t *l)
 693 {
 694         for(; l->name; l++)
 695                 remove_proc_entry(l->name, leds);
 696
 697         remove_proc_entry("led", diag);
 698 }
 699
 700 static void set_led_extif(struct led_t *led)
 701 {
 702         gpio_set_extif(led->gpio, led->state);
 703 }
 704
 705 static void led_flash(unsigned long dummy) {
 706         struct led_t *l;
 707         u32 mask = 0;
 708         u8 extif_blink = 0;
 709
 710         for (l = platform.leds; l->name; l++) {
 711                 if (l->flash) {
 712                         if (l->gpio & GPIO_TYPE_EXTIF) {
 713                                 extif_blink = 1;
 714                                 l->state = !l->state;
 715                                 set_led_extif(l);
 716                         } else {
 717                                 mask |= l->gpio;
 718                         }
 719                 }
 720         }
 721
 722         mask &= ~gpiomask;
 723         if (mask) {
 724                 u32 val = ~gpio_in();
 725
 726                 gpio_outen(mask, mask);
 727                 gpio_control(mask, 0);
 728                 gpio_out(mask, val);
 729         }
 730         if (mask || extif_blink) {
 731                 mod_timer(&led_timer, jiffies + FLASH_TIME);
 732         }
 733 }
 734
 735 static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
 736 {
 737 #ifdef LINUX_2_4
 738         struct inode *inode = file->f_dentry->d_inode;
 739         struct proc_dir_entry *dent = inode->u.generic_ip;
 740 #else
 741         struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
 742 #endif
 743         char *page;
 744         int len = 0;
 745
 746         if ((page = kmalloc(1024, GFP_KERNEL)) == NULL)
 747                 return -ENOBUFS;
 748
 749         if (dent->data != NULL) {
 750                 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
 751                 switch (handler->type) {
 752                         case PROC_LED: {
 753                                 struct led_t * led = (struct led_t *) handler->ptr;
 754                                 if (led->flash) {
 755                                         len = sprintf(page, "f\n");
 756                                 } else {
 757                                         if (led->gpio & GPIO_TYPE_EXTIF) {
 758                                                 len = sprintf(page, "%d\n", led->state);
 759                                         } else {
 760                                                 u32 in = (gpio_in() & led->gpio ? 1 : 0);
 761                                                 u8 p = (led->polarity == NORMAL ? 0 : 1);
 762                                                 len = sprintf(page, "%d\n", ((in ^ p) ? 1 : 0));
 763                                         }
 764                                 }
 765                                 break;
 766                         }
 767                         case PROC_MODEL:
 768                                 len = sprintf(page, "%s\n", platform.name);
 769                                 break;
 770                         case PROC_GPIOMASK:
 771                                 len = sprintf(page, "0x%04x\n", gpiomask);
 772                                 break;
 773                 }
 774         }
 775         len += 1;
 776
 777         if (*ppos < len) {
 778                 len = min_t(int, len - *ppos, count);
 779                 if (copy_to_user(buf, (page + *ppos), len)) {
 780                         kfree(page);
 781                         return -EFAULT;
 782                 }
 783                 *ppos += len;
 784         } else {
 785                 len = 0;
 786         }
 787
 788         return len;
 789 }
 790
 791
 792 static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
 793 {
 794 #ifdef LINUX_2_4
 795         struct inode *inode = file->f_dentry->d_inode;
 796         struct proc_dir_entry *dent = inode->u.generic_ip;
 797 #else
 798         struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
 799 #endif
 800         char *page;
 801         int ret = -EINVAL;
 802
 803         if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
 804                 return -ENOBUFS;
 805
 806         if (copy_from_user(page, buf, count)) {
 807                 kfree(page);
 808                 return -EINVAL;
 809         }
 810         page[count] = 0;
 811
 812         if (dent->data != NULL) {
 813                 struct prochandler_t *handler = (struct prochandler_t *) dent->data;
 814                 switch (handler->type) {
 815                         case PROC_LED: {
 816                                 struct led_t *led = (struct led_t *) handler->ptr;
 817                                 int p = (led->polarity == NORMAL ? 0 : 1);
 818
 819                                 if (page[0] == 'f') {
 820                                         led->flash = 1;
 821                                         led_flash(0);
 822                                 } else {
 823                                         led->flash = 0;
 824                                         if (led->gpio & GPIO_TYPE_EXTIF) {
 825                                                 led->state = p ^ ((page[0] == '1') ? 1 : 0);
 826                                                 set_led_extif(led);
 827                                         } else {
 828                                                 gpio_outen(led->gpio, led->gpio);
 829                                                 gpio_control(led->gpio, 0);
 830                                                 gpio_out(led->gpio, ((p ^ (page[0] == '1')) ? led->gpio : 0));
 831                                         }
 832                                 }
 833                                 break;
 834                         }
 835                         case PROC_GPIOMASK:
 836                                 gpiomask = simple_strtoul(page, NULL, 0);
 837
 838                                 if (platform.buttons) {
 839                                         unregister_buttons(platform.buttons);
 840                                         register_buttons(platform.buttons);
 841                                 }
 842
 843                                 if (platform.leds) {
 844                                         unregister_leds(platform.leds);
 845                                         register_leds(platform.leds);
 846                                 }
 847                                 break;
 848                 }
 849                 ret = count;
 850         }
 851
 852         kfree(page);
 853         return ret;
 854 }
 855
 856 static int __init diag_init(void)
 857 {
 858         static struct proc_dir_entry *p;
 859         static struct platform_t *detected;
 860
 861         detected = platform_detect();
 862         if (!detected) {
 863                 printk(MODULE_NAME ": Router model not detected.\n");
 864                 return -ENODEV;
 865         }
 866         memcpy(&platform, detected, sizeof(struct platform_t));
 867
 868         printk(MODULE_NAME ": Detected '%s'\n", platform.name);
 869
 870         if (!(diag = proc_mkdir("diag", NULL))) {
 871                 printk(MODULE_NAME ": proc_mkdir on /proc/diag failed\n");
 872                 return -EINVAL;
 873         }
 874
 875         if ((p = create_proc_entry("model", S_IRUSR, diag))) {
 876                 p->data = (void *) &proc_model;
 877                 p->proc_fops = &diag_proc_fops;
 878         }
 879
 880         if ((p = create_proc_entry("gpiomask", S_IRUSR | S_IWUSR, diag))) {
 881                 p->data = (void *) &proc_gpiomask;
 882                 p->proc_fops = &diag_proc_fops;
 883         }
 884
 885         if (platform.buttons)
 886                 register_buttons(platform.buttons);
 887
 888         if (platform.leds)
 889                 register_leds(platform.leds);
 890
 891         return 0;
 892 }
 893
 894 static void __exit diag_exit(void)
 895 {
 896
 897         del_timer(&led_timer);
 898
 899         if (platform.buttons)
 900                 unregister_buttons(platform.buttons);
 901
 902         if (platform.leds)
 903                 unregister_leds(platform.leds);
 904
 905         remove_proc_entry("model", diag);
 906         remove_proc_entry("gpiomask", diag);
 907         remove_proc_entry("diag", NULL);
 908 }
 909
 910 module_init(diag_init);
 911 module_exit(diag_exit);
 912
 913 MODULE_AUTHOR("Mike Baker, Felix Fietkau / OpenWrt.org");
 914 MODULE_LICENSE("GPL");