SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/video/saa7134/saa7134-input.c

   1 /*
   2  *
   3  * handle saa7134 IR remotes via linux kernel input layer.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18  *
  19  */
  20
  21 #include <linux/module.h>
  22 #include <linux/init.h>
  23 #include <linux/delay.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/input.h>
  26
  27 #include "saa7134-reg.h"
  28 #include "saa7134.h"
  29
  30 static unsigned int disable_ir;
  31 module_param(disable_ir, int, 0444);
  32 MODULE_PARM_DESC(disable_ir,"disable infrared remote support");
  33
  34 static unsigned int ir_debug;
  35 module_param(ir_debug, int, 0644);
  36 MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
  37
  38 static int pinnacle_remote;
  39 module_param(pinnacle_remote, int, 0644);    /* Choose Pinnacle PCTV remote */
  40 MODULE_PARM_DESC(pinnacle_remote, "Specify Pinnacle PCTV remote: 0=coloured, 1=grey (defaults to 0)");
  41
  42 static int ir_rc5_remote_gap = 885;
  43 module_param(ir_rc5_remote_gap, int, 0644);
  44 static int ir_rc5_key_timeout = 115;
  45 module_param(ir_rc5_key_timeout, int, 0644);
  46
  47 static int repeat_delay = 500;
  48 module_param(repeat_delay, int, 0644);
  49 MODULE_PARM_DESC(repeat_delay, "delay before key repeat started");
  50 static int repeat_period = 33;
  51 module_param(repeat_period, int, 0644);
  52 MODULE_PARM_DESC(repeat_period, "repeat period between "
  53     "keypresses when key is down");
  54
  55 static unsigned int disable_other_ir;
  56 module_param(disable_other_ir, int, 0644);
  57 MODULE_PARM_DESC(disable_other_ir, "disable full codes of "
  58     "alternative remotes from other manufacturers");
  59
  60 #define dprintk(fmt, arg...)    if (ir_debug) \
  61         printk(KERN_DEBUG "%s/ir: " fmt, dev->name , ## arg)
  62 #define i2cdprintk(fmt, arg...)    if (ir_debug) \
  63         printk(KERN_DEBUG "%s/ir: " fmt, ir->c.name , ## arg)
  64
  65 /* Helper functions for RC5 and NEC decoding at GPIO16 or GPIO18 */
  66 static int saa7134_rc5_irq(struct saa7134_dev *dev);
  67 static int saa7134_nec_irq(struct saa7134_dev *dev);
  68 static void nec_task(unsigned long data);
  69 static void saa7134_nec_timer(unsigned long data);
  70
  71 /* -------------------- GPIO generic keycode builder -------------------- */
  72
  73 static int build_key(struct saa7134_dev *dev)
  74 {
  75         struct card_ir *ir = dev->remote;
  76         u32 gpio, data;
  77
  78         /* here comes the additional handshake steps for some cards */
  79         switch (dev->board) {
  80         case SAA7134_BOARD_GOTVIEW_7135:
  81                 saa_setb(SAA7134_GPIO_GPSTATUS1, 0x80);
  82                 saa_clearb(SAA7134_GPIO_GPSTATUS1, 0x80);
  83                 break;
  84         }
  85         /* rising SAA7134_GPIO_GPRESCAN reads the status */
  86         saa_clearb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
  87         saa_setb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
  88
  89         gpio = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2);
  90         if (ir->polling) {
  91                 if (ir->last_gpio == gpio)
  92                         return 0;
  93                 ir->last_gpio = gpio;
  94         }
  95
  96         data = ir_extract_bits(gpio, ir->mask_keycode);
  97         dprintk("build_key gpio=0x%x mask=0x%x data=%d\n",
  98                 gpio, ir->mask_keycode, data);
  99
 100         if (ir->polling) {
 101                 if ((ir->mask_keydown  &&  (0 != (gpio & ir->mask_keydown))) ||
 102                     (ir->mask_keyup    &&  (0 == (gpio & ir->mask_keyup)))) {
 103                         ir_input_keydown(ir->dev, &ir->ir, data, data);
 104                 } else {
 105                         ir_input_nokey(ir->dev, &ir->ir);
 106                 }
 107         }
 108         else {  /* IRQ driven mode - handle key press and release in one go */
 109                 if ((ir->mask_keydown  &&  (0 != (gpio & ir->mask_keydown))) ||
 110                     (ir->mask_keyup    &&  (0 == (gpio & ir->mask_keyup)))) {
 111                         ir_input_keydown(ir->dev, &ir->ir, data, data);
 112                         ir_input_nokey(ir->dev, &ir->ir);
 113                 }
 114         }
 115
 116         return 0;
 117 }
 118
 119 /* --------------------- Chip specific I2C key builders ----------------- */
 120
 121 static int get_key_purpletv(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 122 {
 123         unsigned char b;
 124
 125         /* poll IR chip */
 126         if (1 != i2c_master_recv(&ir->c,&b,1)) {
 127                 i2cdprintk("read error\n");
 128                 return -EIO;
 129         }
 130
 131         /* no button press */
 132         if (b==0)
 133                 return 0;
 134
 135         /* repeating */
 136         if (b & 0x80)
 137                 return 1;
 138
 139         *ir_key = b;
 140         *ir_raw = b;
 141         return 1;
 142 }
 143
 144 static int get_key_hvr1110(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 145 {
 146         unsigned char buf[5], cod4, code3, code4;
 147
 148         /* poll IR chip */
 149         if (5 != i2c_master_recv(&ir->c,buf,5))
 150                 return -EIO;
 151
 152         cod4    = buf[4];
 153         code4   = (cod4 >> 2);
 154         code3   = buf[3];
 155         if (code3 == 0)
 156                 /* no key pressed */
 157                 return 0;
 158
 159         /* return key */
 160         *ir_key = code4;
 161         *ir_raw = code4;
 162         return 1;
 163 }
 164
 165
 166 static int get_key_beholdm6xx(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 167 {
 168         unsigned char data[12];
 169         u32 gpio;
 170
 171         struct saa7134_dev *dev = ir->c.adapter->algo_data;
 172
 173         /* rising SAA7134_GPIO_GPRESCAN reads the status */
 174         saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 175         saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 176
 177         gpio = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2);
 178
 179         if (0x400000 & ~gpio)
 180                 return 0; /* No button press */
 181
 182         ir->c.addr = 0x5a >> 1;
 183
 184         if (12 != i2c_master_recv(&ir->c, data, 12)) {
 185                 i2cdprintk("read error\n");
 186                 return -EIO;
 187         }
 188         /* IR of this card normally decode signals NEC-standard from
 189          * - Sven IHOO MT 5.1R remote. xxyye718
 190          * - Sven DVD HD-10xx remote. xxyyf708
 191          * - BBK ...
 192          * - mayby others
 193          * So, skip not our, if disable full codes mode.
 194          */
 195         if (data[10] != 0x6b && data[11] != 0x86 && disable_other_ir)
 196                 return 0;
 197
 198         *ir_key = data[9];
 199         *ir_raw = data[9];
 200
 201         return 1;
 202 }
 203
 204 /* Common (grey or coloured) pinnacle PCTV remote handling
 205  *
 206  */
 207 static int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw,
 208                             int parity_offset, int marker, int code_modulo)
 209 {
 210         unsigned char b[4];
 211         unsigned int start = 0,parity = 0,code = 0;
 212
 213         /* poll IR chip */
 214         if (4 != i2c_master_recv(&ir->c, b, 4)) {
 215                 i2cdprintk("read error\n");
 216                 return -EIO;
 217         }
 218
 219         for (start = 0; start < ARRAY_SIZE(b); start++) {
 220                 if (b[start] == marker) {
 221                         code=b[(start+parity_offset + 1) % 4];
 222                         parity=b[(start+parity_offset) % 4];
 223                 }
 224         }
 225
 226         /* Empty Request */
 227         if (parity == 0)
 228                 return 0;
 229
 230         /* Repeating... */
 231         if (ir->old == parity)
 232                 return 0;
 233
 234         ir->old = parity;
 235
 236         /* drop special codes when a key is held down a long time for the grey controller
 237            In this case, the second bit of the code is asserted */
 238         if (marker == 0xfe && (code & 0x40))
 239                 return 0;
 240
 241         code %= code_modulo;
 242
 243         *ir_raw = code;
 244         *ir_key = code;
 245
 246         i2cdprintk("Pinnacle PCTV key %02x\n", code);
 247
 248         return 1;
 249 }
 250
 251 /* The grey pinnacle PCTV remote
 252  *
 253  *  There are one issue with this remote:
 254  *   - I2c packet does not change when the same key is pressed quickly. The workaround
 255  *     is to hold down each key for about half a second, so that another code is generated
 256  *     in the i2c packet, and the function can distinguish key presses.
 257  *
 258  * Sylvain Pasche <sylvain.pasche@gmail.com>
 259  */
 260 static int get_key_pinnacle_grey(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 261 {
 262
 263         return get_key_pinnacle(ir, ir_key, ir_raw, 1, 0xfe, 0xff);
 264 }
 265
 266
 267 /* The new pinnacle PCTV remote (with the colored buttons)
 268  *
 269  * Ricardo Cerqueira <v4l@cerqueira.org>
 270  */
 271 static int get_key_pinnacle_color(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 272 {
 273         /* code_modulo parameter (0x88) is used to reduce code value to fit inside IR_KEYTAB_SIZE
 274          *
 275          * this is the only value that results in 42 unique
 276          * codes < 128
 277          */
 278
 279         return get_key_pinnacle(ir, ir_key, ir_raw, 2, 0x80, 0x88);
 280 }
 281
 282 void saa7134_input_irq(struct saa7134_dev *dev)
 283 {
 284         struct card_ir *ir = dev->remote;
 285
 286         if (ir->nec_gpio) {
 287                 saa7134_nec_irq(dev);
 288         } else if (!ir->polling && !ir->rc5_gpio) {
 289                 build_key(dev);
 290         } else if (ir->rc5_gpio) {
 291                 saa7134_rc5_irq(dev);
 292         }
 293 }
 294
 295 static void saa7134_input_timer(unsigned long data)
 296 {
 297         struct saa7134_dev *dev = (struct saa7134_dev *)data;
 298         struct card_ir *ir = dev->remote;
 299
 300         build_key(dev);
 301         mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
 302 }
 303
 304 void saa7134_ir_start(struct saa7134_dev *dev, struct card_ir *ir)
 305 {
 306         if (ir->polling) {
 307                 setup_timer(&ir->timer, saa7134_input_timer,
 308                             (unsigned long)dev);
 309                 ir->timer.expires  = jiffies + HZ;
 310                 add_timer(&ir->timer);
 311         } else if (ir->rc5_gpio) {
 312                 /* set timer_end for code completion */
 313                 init_timer(&ir->timer_end);
 314                 ir->timer_end.function = ir_rc5_timer_end;
 315                 ir->timer_end.data = (unsigned long)ir;
 316                 init_timer(&ir->timer_keyup);
 317                 ir->timer_keyup.function = ir_rc5_timer_keyup;
 318                 ir->timer_keyup.data = (unsigned long)ir;
 319                 ir->shift_by = 2;
 320                 ir->start = 0x2;
 321                 ir->addr = 0x17;
 322                 ir->rc5_key_timeout = ir_rc5_key_timeout;
 323                 ir->rc5_remote_gap = ir_rc5_remote_gap;
 324         } else if (ir->nec_gpio) {
 325                 setup_timer(&ir->timer_keyup, saa7134_nec_timer,
 326                             (unsigned long)dev);
 327                 tasklet_init(&ir->tlet, nec_task, (unsigned long)dev);
 328         }
 329 }
 330
 331 void saa7134_ir_stop(struct saa7134_dev *dev)
 332 {
 333         if (dev->remote->polling)
 334                 del_timer_sync(&dev->remote->timer);
 335 }
 336
 337 int saa7134_input_init1(struct saa7134_dev *dev)
 338 {
 339         struct card_ir *ir;
 340         struct input_dev *input_dev;
 341         IR_KEYTAB_TYPE *ir_codes = NULL;
 342         u32 mask_keycode = 0;
 343         u32 mask_keydown = 0;
 344         u32 mask_keyup   = 0;
 345         int polling      = 0;
 346         int rc5_gpio     = 0;
 347         int nec_gpio     = 0;
 348         int ir_type      = IR_TYPE_OTHER;
 349         int err;
 350
 351         if (dev->has_remote != SAA7134_REMOTE_GPIO)
 352                 return -ENODEV;
 353         if (disable_ir)
 354                 return -ENODEV;
 355
 356         /* detect & configure */
 357         switch (dev->board) {
 358         case SAA7134_BOARD_FLYVIDEO2000:
 359         case SAA7134_BOARD_FLYVIDEO3000:
 360         case SAA7134_BOARD_FLYTVPLATINUM_FM:
 361         case SAA7134_BOARD_FLYTVPLATINUM_MINI2:
 362                 ir_codes     = ir_codes_flyvideo;
 363                 mask_keycode = 0xEC00000;
 364                 mask_keydown = 0x0040000;
 365                 break;
 366         case SAA7134_BOARD_CINERGY400:
 367         case SAA7134_BOARD_CINERGY600:
 368         case SAA7134_BOARD_CINERGY600_MK3:
 369                 ir_codes     = ir_codes_cinergy;
 370                 mask_keycode = 0x00003f;
 371                 mask_keyup   = 0x040000;
 372                 break;
 373         case SAA7134_BOARD_ECS_TVP3XP:
 374         case SAA7134_BOARD_ECS_TVP3XP_4CB5:
 375                 ir_codes     = ir_codes_eztv;
 376                 mask_keycode = 0x00017c;
 377                 mask_keyup   = 0x000002;
 378                 polling      = 50; // ms
 379                 break;
 380         case SAA7134_BOARD_KWORLD_XPERT:
 381         case SAA7134_BOARD_AVACSSMARTTV:
 382                 ir_codes     = ir_codes_pixelview;
 383                 mask_keycode = 0x00001F;
 384                 mask_keyup   = 0x000020;
 385                 polling      = 50; // ms
 386                 break;
 387         case SAA7134_BOARD_MD2819:
 388         case SAA7134_BOARD_KWORLD_VSTREAM_XPERT:
 389         case SAA7134_BOARD_AVERMEDIA_305:
 390         case SAA7134_BOARD_AVERMEDIA_307:
 391         case SAA7134_BOARD_AVERMEDIA_STUDIO_305:
 392         case SAA7134_BOARD_AVERMEDIA_STUDIO_307:
 393         case SAA7134_BOARD_AVERMEDIA_STUDIO_507:
 394         case SAA7134_BOARD_AVERMEDIA_GO_007_FM:
 395         case SAA7134_BOARD_AVERMEDIA_M102:
 396                 ir_codes     = ir_codes_avermedia;
 397                 mask_keycode = 0x0007C8;
 398                 mask_keydown = 0x000010;
 399                 polling      = 50; // ms
 400                 /* Set GPIO pin2 to high to enable the IR controller */
 401                 saa_setb(SAA7134_GPIO_GPMODE0, 0x4);
 402                 saa_setb(SAA7134_GPIO_GPSTATUS0, 0x4);
 403                 break;
 404         case SAA7134_BOARD_AVERMEDIA_M135A:
 405                 ir_codes     = ir_codes_avermedia_m135a;
 406                 mask_keydown = 0x0040000;
 407                 mask_keycode = 0x00013f;
 408                 nec_gpio     = 1;
 409                 break;
 410         case SAA7134_BOARD_AVERMEDIA_777:
 411         case SAA7134_BOARD_AVERMEDIA_A16AR:
 412                 ir_codes     = ir_codes_avermedia;
 413                 mask_keycode = 0x02F200;
 414                 mask_keydown = 0x000400;
 415                 polling      = 50; // ms
 416                 /* Without this we won't receive key up events */
 417                 saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
 418                 saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
 419                 break;
 420         case SAA7134_BOARD_AVERMEDIA_A16D:
 421                 ir_codes     = ir_codes_avermedia_a16d;
 422                 mask_keycode = 0x02F200;
 423                 mask_keydown = 0x000400;
 424                 polling      = 50; /* ms */
 425                 /* Without this we won't receive key up events */
 426                 saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
 427                 saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
 428                 break;
 429         case SAA7134_BOARD_KWORLD_TERMINATOR:
 430                 ir_codes     = ir_codes_pixelview;
 431                 mask_keycode = 0x00001f;
 432                 mask_keyup   = 0x000060;
 433                 polling      = 50; // ms
 434                 break;
 435         case SAA7134_BOARD_MANLI_MTV001:
 436         case SAA7134_BOARD_MANLI_MTV002:
 437                 ir_codes     = ir_codes_manli;
 438                 mask_keycode = 0x001f00;
 439                 mask_keyup   = 0x004000;
 440                 polling      = 50; /* ms */
 441                 break;
 442         case SAA7134_BOARD_BEHOLD_409FM:
 443         case SAA7134_BOARD_BEHOLD_401:
 444         case SAA7134_BOARD_BEHOLD_403:
 445         case SAA7134_BOARD_BEHOLD_403FM:
 446         case SAA7134_BOARD_BEHOLD_405:
 447         case SAA7134_BOARD_BEHOLD_405FM:
 448         case SAA7134_BOARD_BEHOLD_407:
 449         case SAA7134_BOARD_BEHOLD_407FM:
 450         case SAA7134_BOARD_BEHOLD_409:
 451         case SAA7134_BOARD_BEHOLD_505FM:
 452         case SAA7134_BOARD_BEHOLD_507_9FM:
 453                 ir_codes     = ir_codes_manli;
 454                 mask_keycode = 0x003f00;
 455                 mask_keyup   = 0x004000;
 456                 polling      = 50; /* ms */
 457                 break;
 458         case SAA7134_BOARD_BEHOLD_COLUMBUS_TVFM:
 459                 ir_codes     = ir_codes_behold_columbus;
 460                 mask_keycode = 0x003f00;
 461                 mask_keyup   = 0x004000;
 462                 polling      = 50; // ms
 463                 break;
 464         case SAA7134_BOARD_SEDNA_PC_TV_CARDBUS:
 465                 ir_codes     = ir_codes_pctv_sedna;
 466                 mask_keycode = 0x001f00;
 467                 mask_keyup   = 0x004000;
 468                 polling      = 50; // ms
 469                 break;
 470         case SAA7134_BOARD_GOTVIEW_7135:
 471                 ir_codes     = ir_codes_gotview7135;
 472                 mask_keycode = 0x0003CC;
 473                 mask_keydown = 0x000010;
 474                 polling      = 5; /* ms */
 475                 saa_setb(SAA7134_GPIO_GPMODE1, 0x80);
 476                 break;
 477         case SAA7134_BOARD_VIDEOMATE_TV_PVR:
 478         case SAA7134_BOARD_VIDEOMATE_GOLD_PLUS:
 479         case SAA7134_BOARD_VIDEOMATE_TV_GOLD_PLUSII:
 480                 ir_codes     = ir_codes_videomate_tv_pvr;
 481                 mask_keycode = 0x00003F;
 482                 mask_keyup   = 0x400000;
 483                 polling      = 50; // ms
 484                 break;
 485         case SAA7134_BOARD_PROTEUS_2309:
 486                 ir_codes     = ir_codes_proteus_2309;
 487                 mask_keycode = 0x00007F;
 488                 mask_keyup   = 0x000080;
 489                 polling      = 50; // ms
 490                 break;
 491         case SAA7134_BOARD_VIDEOMATE_DVBT_300:
 492         case SAA7134_BOARD_VIDEOMATE_DVBT_200:
 493                 ir_codes     = ir_codes_videomate_tv_pvr;
 494                 mask_keycode = 0x003F00;
 495                 mask_keyup   = 0x040000;
 496                 break;
 497         case SAA7134_BOARD_FLYDVBS_LR300:
 498         case SAA7134_BOARD_FLYDVBT_LR301:
 499         case SAA7134_BOARD_FLYDVBTDUO:
 500                 ir_codes     = ir_codes_flydvb;
 501                 mask_keycode = 0x0001F00;
 502                 mask_keydown = 0x0040000;
 503                 break;
 504         case SAA7134_BOARD_ASUSTeK_P7131_DUAL:
 505         case SAA7134_BOARD_ASUSTeK_P7131_HYBRID_LNA:
 506        case SAA7134_BOARD_ASUSTeK_P7131_ANALOG:
 507                 ir_codes     = ir_codes_asus_pc39;
 508                 mask_keydown = 0x0040000;
 509                 rc5_gpio = 1;
 510                 break;
 511         case SAA7134_BOARD_ENCORE_ENLTV:
 512         case SAA7134_BOARD_ENCORE_ENLTV_FM:
 513                 ir_codes     = ir_codes_encore_enltv;
 514                 mask_keycode = 0x00007f;
 515                 mask_keyup   = 0x040000;
 516                 polling      = 50; // ms
 517                 break;
 518         case SAA7134_BOARD_ENCORE_ENLTV_FM53:
 519                 ir_codes     = ir_codes_encore_enltv_fm53;
 520                 mask_keydown = 0x0040000;
 521                 mask_keycode = 0x00007f;
 522                 nec_gpio = 1;
 523                 break;
 524         case SAA7134_BOARD_10MOONSTVMASTER3:
 525                 ir_codes     = ir_codes_encore_enltv;
 526                 mask_keycode = 0x5f80000;
 527                 mask_keyup   = 0x8000000;
 528                 polling      = 50; //ms
 529                 break;
 530         case SAA7134_BOARD_GENIUS_TVGO_A11MCE:
 531                 ir_codes     = ir_codes_genius_tvgo_a11mce;
 532                 mask_keycode = 0xff;
 533                 mask_keydown = 0xf00000;
 534                 polling = 50; /* ms */
 535                 break;
 536         case SAA7134_BOARD_REAL_ANGEL_220:
 537                 ir_codes     = ir_codes_real_audio_220_32_keys;
 538                 mask_keycode = 0x3f00;
 539                 mask_keyup   = 0x4000;
 540                 polling = 50; /* ms */
 541                 break;
 542         }
 543         if (NULL == ir_codes) {
 544                 printk("%s: Oops: IR config error [card=%d]\n",
 545                        dev->name, dev->board);
 546                 return -ENODEV;
 547         }
 548
 549         ir = kzalloc(sizeof(*ir), GFP_KERNEL);
 550         input_dev = input_allocate_device();
 551         if (!ir || !input_dev) {
 552                 err = -ENOMEM;
 553                 goto err_out_free;
 554         }
 555
 556         ir->dev = input_dev;
 557
 558         /* init hardware-specific stuff */
 559         ir->mask_keycode = mask_keycode;
 560         ir->mask_keydown = mask_keydown;
 561         ir->mask_keyup   = mask_keyup;
 562         ir->polling      = polling;
 563         ir->rc5_gpio     = rc5_gpio;
 564         ir->nec_gpio     = nec_gpio;
 565
 566         /* init input device */
 567         snprintf(ir->name, sizeof(ir->name), "saa7134 IR (%s)",
 568                  saa7134_boards[dev->board].name);
 569         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
 570                  pci_name(dev->pci));
 571
 572         ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
 573         input_dev->name = ir->name;
 574         input_dev->phys = ir->phys;
 575         input_dev->id.bustype = BUS_PCI;
 576         input_dev->id.version = 1;
 577         if (dev->pci->subsystem_vendor) {
 578                 input_dev->id.vendor  = dev->pci->subsystem_vendor;
 579                 input_dev->id.product = dev->pci->subsystem_device;
 580         } else {
 581                 input_dev->id.vendor  = dev->pci->vendor;
 582                 input_dev->id.product = dev->pci->device;
 583         }
 584         input_dev->dev.parent = &dev->pci->dev;
 585
 586         dev->remote = ir;
 587         saa7134_ir_start(dev, ir);
 588
 589         err = input_register_device(ir->dev);
 590         if (err)
 591                 goto err_out_stop;
 592
 593         /* the remote isn't as bouncy as a keyboard */
 594         ir->dev->rep[REP_DELAY] = repeat_delay;
 595         ir->dev->rep[REP_PERIOD] = repeat_period;
 596
 597         return 0;
 598
 599  err_out_stop:
 600         saa7134_ir_stop(dev);
 601         dev->remote = NULL;
 602  err_out_free:
 603         input_free_device(input_dev);
 604         kfree(ir);
 605         return err;
 606 }
 607
 608 void saa7134_input_fini(struct saa7134_dev *dev)
 609 {
 610         if (NULL == dev->remote)
 611                 return;
 612
 613         saa7134_ir_stop(dev);
 614         input_unregister_device(dev->remote->dev);
 615         kfree(dev->remote);
 616         dev->remote = NULL;
 617 }
 618
 619 void saa7134_set_i2c_ir(struct saa7134_dev *dev, struct IR_i2c *ir)
 620 {
 621         if (disable_ir) {
 622                 dprintk("Found supported i2c remote, but IR has been disabled\n");
 623                 ir->get_key=NULL;
 624                 return;
 625         }
 626
 627         switch (dev->board) {
 628         case SAA7134_BOARD_PINNACLE_PCTV_110i:
 629         case SAA7134_BOARD_PINNACLE_PCTV_310i:
 630                 snprintf(ir->c.name, sizeof(ir->c.name), "Pinnacle PCTV");
 631                 if (pinnacle_remote == 0) {
 632                         ir->get_key   = get_key_pinnacle_color;
 633                         ir->ir_codes = ir_codes_pinnacle_color;
 634                 } else {
 635                         ir->get_key   = get_key_pinnacle_grey;
 636                         ir->ir_codes = ir_codes_pinnacle_grey;
 637                 }
 638                 break;
 639         case SAA7134_BOARD_UPMOST_PURPLE_TV:
 640                 snprintf(ir->c.name, sizeof(ir->c.name), "Purple TV");
 641                 ir->get_key   = get_key_purpletv;
 642                 ir->ir_codes  = ir_codes_purpletv;
 643                 break;
 644         case SAA7134_BOARD_HAUPPAUGE_HVR1110:
 645                 snprintf(ir->c.name, sizeof(ir->c.name), "HVR 1110");
 646                 ir->get_key   = get_key_hvr1110;
 647                 ir->ir_codes  = ir_codes_hauppauge_new;
 648                 break;
 649         case SAA7134_BOARD_BEHOLD_607_9FM:
 650         case SAA7134_BOARD_BEHOLD_M6:
 651         case SAA7134_BOARD_BEHOLD_M63:
 652         case SAA7134_BOARD_BEHOLD_M6_EXTRA:
 653         case SAA7134_BOARD_BEHOLD_H6:
 654                 snprintf(ir->c.name, sizeof(ir->c.name), "BeholdTV");
 655                 ir->get_key   = get_key_beholdm6xx;
 656                 ir->ir_codes  = ir_codes_behold;
 657                 break;
 658         default:
 659                 dprintk("Shouldn't get here: Unknown board %x for I2C IR?\n",dev->board);
 660                 break;
 661         }
 662
 663 }
 664
 665 static int saa7134_rc5_irq(struct saa7134_dev *dev)
 666 {
 667         struct card_ir *ir = dev->remote;
 668         struct timeval tv;
 669         u32 gap;
 670         unsigned long current_jiffies, timeout;
 671
 672         /* get time of bit */
 673         current_jiffies = jiffies;
 674         do_gettimeofday(&tv);
 675
 676         /* avoid overflow with gap >1s */
 677         if (tv.tv_sec - ir->base_time.tv_sec > 1) {
 678                 gap = 200000;
 679         } else {
 680                 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
 681                     tv.tv_usec - ir->base_time.tv_usec;
 682         }
 683
 684         /* active code => add bit */
 685         if (ir->active) {
 686                 /* only if in the code (otherwise spurious IRQ or timer
 687                    late) */
 688                 if (ir->last_bit < 28) {
 689                         ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
 690                             ir_rc5_remote_gap;
 691                         ir->code |= 1 << ir->last_bit;
 692                 }
 693                 /* starting new code */
 694         } else {
 695                 ir->active = 1;
 696                 ir->code = 0;
 697                 ir->base_time = tv;
 698                 ir->last_bit = 0;
 699
 700                 timeout = current_jiffies + (500 + 30 * HZ) / 1000;
 701                 mod_timer(&ir->timer_end, timeout);
 702         }
 703
 704         return 1;
 705 }
 706
 707
 708 /* On NEC protocol, One has 2.25 ms, and zero has 1.125 ms
 709    The first pulse (start) has 9 + 4.5 ms
 710  */
 711
 712 static void saa7134_nec_timer(unsigned long data)
 713 {
 714         struct saa7134_dev *dev = (struct saa7134_dev *) data;
 715         struct card_ir *ir = dev->remote;
 716
 717         dprintk("Cancel key repeat\n");
 718
 719         ir_input_nokey(ir->dev, &ir->ir);
 720 }
 721
 722 static void nec_task(unsigned long data)
 723 {
 724         struct saa7134_dev *dev = (struct saa7134_dev *) data;
 725         struct card_ir *ir;
 726         struct timeval tv;
 727         int count, pulse, oldpulse, gap;
 728         u32 ircode = 0, not_code = 0;
 729         int ngap = 0;
 730
 731         if (!data) {
 732                 printk(KERN_ERR "saa713x/ir: Can't recover dev struct\n");
 733                 /* GPIO will be kept disabled */
 734                 return;
 735         }
 736
 737         ir = dev->remote;
 738
 739         /* rising SAA7134_GPIO_GPRESCAN reads the status */
 740         saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 741         saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 742
 743         oldpulse = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2) & ir->mask_keydown;
 744         pulse = oldpulse;
 745
 746         do_gettimeofday(&tv);
 747         ir->base_time = tv;
 748
 749         /* Decode NEC pulsecode. This code can take up to 76.5 ms to run.
 750            Unfortunately, using IRQ to decode pulse didn't work, since it uses
 751            a pulse train of 38KHz. This means one pulse on each 52 us
 752          */
 753         do {
 754                 /* Wait until the end of pulse/space or 5 ms */
 755                 for (count = 0; count < 500; count++)  {
 756                         udelay(10);
 757                         /* rising SAA7134_GPIO_GPRESCAN reads the status */
 758                         saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 759                         saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 760                         pulse = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2)
 761                                 & ir->mask_keydown;
 762                         if (pulse != oldpulse)
 763                                 break;
 764                 }
 765
 766                 do_gettimeofday(&tv);
 767                 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
 768                                 tv.tv_usec - ir->base_time.tv_usec;
 769
 770                 if (!pulse) {
 771                         /* Bit 0 has 560 us, while bit 1 has 1120 us.
 772                            Do something only if bit == 1
 773                          */
 774                         if (ngap && (gap > 560 + 280)) {
 775                                 unsigned int shift = ngap - 1;
 776
 777                                 /* Address first, then command */
 778                                 if (shift < 8) {
 779                                         shift += 8;
 780                                         ircode |= 1 << shift;
 781                                 } else if (shift < 16) {
 782                                         not_code |= 1 << shift;
 783                                 } else if (shift < 24) {
 784                                         shift -= 16;
 785                                         ircode |= 1 << shift;
 786                                 } else {
 787                                         shift -= 24;
 788                                         not_code |= 1 << shift;
 789                                 }
 790                         }
 791                         ngap++;
 792                 }
 793
 794
 795                 ir->base_time = tv;
 796
 797                 /* TIMEOUT - Long pulse */
 798                 if (gap >= 5000)
 799                         break;
 800                 oldpulse = pulse;
 801         } while (ngap < 32);
 802
 803         if (ngap == 32) {
 804                 /* FIXME: should check if not_code == ~ircode */
 805                 ir->code = ir_extract_bits(ircode, ir->mask_keycode);
 806
 807                 dprintk("scancode = 0x%02x (code = 0x%02x, notcode= 0x%02x)\n",
 808                          ir->code, ircode, not_code);
 809
 810                 ir_input_keydown(ir->dev, &ir->ir, ir->code, ir->code);
 811         } else
 812                 dprintk("Repeat last key\n");
 813
 814         /* Keep repeating the last key */
 815         mod_timer(&ir->timer_keyup, jiffies + msecs_to_jiffies(150));
 816
 817         saa_setl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18);
 818 }
 819
 820 static int saa7134_nec_irq(struct saa7134_dev *dev)
 821 {
 822         struct card_ir *ir = dev->remote;
 823
 824         saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18);
 825         tasklet_schedule(&ir->tlet);
 826
 827         return 1;
 828 }