drivers/media/pci/cx88/cx88-input.c

   1 /*
   2  *
   3  * Device driver for GPIO attached remote control interfaces
   4  * on Conexant 2388x based TV/DVB cards.
   5  *
   6  * Copyright (c) 2003 Pavel Machek
   7  * Copyright (c) 2004 Gerd Knorr
   8  * Copyright (c) 2004, 2005 Chris Pascoe
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  */
  20
  21 #include "cx88.h"
  22
  23 #include <linux/init.h>
  24 #include <linux/hrtimer.h>
  25 #include <linux/pci.h>
  26 #include <linux/slab.h>
  27 #include <linux/module.h>
  28
  29 #include <media/rc-core.h>
  30
  31 #define MODULE_NAME "cx88xx"
  32
  33 /* ---------------------------------------------------------------------- */
  34
  35 struct cx88_IR {
  36         struct cx88_core *core;
  37         struct rc_dev *dev;
  38
  39         int users;
  40
  41         char name[32];
  42         char phys[32];
  43
  44         /* sample from gpio pin 16 */
  45         u32 sampling;
  46
  47         /* poll external decoder */
  48         int polling;
  49         struct hrtimer timer;
  50         u32 gpio_addr;
  51         u32 last_gpio;
  52         u32 mask_keycode;
  53         u32 mask_keydown;
  54         u32 mask_keyup;
  55 };
  56
  57 static unsigned int ir_samplerate = 4;
  58 module_param(ir_samplerate, uint, 0444);
  59 MODULE_PARM_DESC(ir_samplerate, "IR samplerate in kHz, 1 - 20, default 4");
  60
  61 static int ir_debug;
  62 module_param(ir_debug, int, 0644);      /* debug level [IR] */
  63 MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
  64
  65 #define ir_dprintk(fmt, arg...) do {                                    \
  66         if (ir_debug)                                                   \
  67                 printk(KERN_DEBUG "%s IR: " fmt, ir->core->name, ##arg);\
  68 } while (0)
  69
  70 #define dprintk(fmt, arg...) do {                                       \
  71         if (ir_debug)                                                   \
  72                 printk(KERN_DEBUG "cx88 IR: " fmt, ##arg);              \
  73 } while (0)
  74
  75 /* ---------------------------------------------------------------------- */
  76
  77 static void cx88_ir_handle_key(struct cx88_IR *ir)
  78 {
  79         struct cx88_core *core = ir->core;
  80         u32 gpio, data, auxgpio;
  81
  82         /* read gpio value */
  83         gpio = cx_read(ir->gpio_addr);
  84         switch (core->boardnr) {
  85         case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
  86                 /*
  87                  * This board apparently uses a combination of 2 GPIO
  88                  * to represent the keys. Additionally, the second GPIO
  89                  * can be used for parity.
  90                  *
  91                  * Example:
  92                  *
  93                  * for key "5"
  94                  *      gpio = 0x758, auxgpio = 0xe5 or 0xf5
  95                  * for key "Power"
  96                  *      gpio = 0x758, auxgpio = 0xed or 0xfd
  97                  */
  98
  99                 auxgpio = cx_read(MO_GP1_IO);
 100                 /* Take out the parity part */
 101                 gpio = (gpio & 0x7fd) + (auxgpio & 0xef);
 102                 break;
 103         case CX88_BOARD_WINFAST_DTV1000:
 104         case CX88_BOARD_WINFAST_DTV1800H:
 105         case CX88_BOARD_WINFAST_DTV1800H_XC4000:
 106         case CX88_BOARD_WINFAST_DTV2000H_PLUS:
 107         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
 108         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36:
 109         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43:
 110                 gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900);
 111                 auxgpio = gpio;
 112                 break;
 113         default:
 114                 auxgpio = gpio;
 115         }
 116         if (ir->polling) {
 117                 if (ir->last_gpio == auxgpio)
 118                         return;
 119                 ir->last_gpio = auxgpio;
 120         }
 121
 122         /* extract data */
 123         data = ir_extract_bits(gpio, ir->mask_keycode);
 124         ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
 125                    gpio, data,
 126                    ir->polling ? "poll" : "irq",
 127                    (gpio & ir->mask_keydown) ? " down" : "",
 128                    (gpio & ir->mask_keyup) ? " up" : "");
 129
 130         if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) {
 131                 u32 gpio_key = cx_read(MO_GP0_IO);
 132
 133                 data = (data << 4) | ((gpio_key & 0xf0) >> 4);
 134
 135                 rc_keydown(ir->dev, RC_PROTO_UNKNOWN, data, 0);
 136
 137         } else if (ir->core->boardnr == CX88_BOARD_PROLINK_PLAYTVPVR ||
 138                    ir->core->boardnr == CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO) {
 139                 /* bit cleared on keydown, NEC scancode, 0xAAAACC, A = 0x866b */
 140                 u16 addr;
 141                 u8 cmd;
 142                 u32 scancode;
 143
 144                 addr = (data >> 8) & 0xffff;
 145                 cmd  = (data >> 0) & 0x00ff;
 146                 scancode = RC_SCANCODE_NECX(addr, cmd);
 147
 148                 if (0 == (gpio & ir->mask_keyup))
 149                         rc_keydown_notimeout(ir->dev, RC_PROTO_NECX, scancode,
 150                                              0);
 151                 else
 152                         rc_keyup(ir->dev);
 153
 154         } else if (ir->mask_keydown) {
 155                 /* bit set on keydown */
 156                 if (gpio & ir->mask_keydown)
 157                         rc_keydown_notimeout(ir->dev, RC_PROTO_UNKNOWN, data,
 158                                              0);
 159                 else
 160                         rc_keyup(ir->dev);
 161
 162         } else if (ir->mask_keyup) {
 163                 /* bit cleared on keydown */
 164                 if (0 == (gpio & ir->mask_keyup))
 165                         rc_keydown_notimeout(ir->dev, RC_PROTO_UNKNOWN, data,
 166                                              0);
 167                 else
 168                         rc_keyup(ir->dev);
 169
 170         } else {
 171                 /* can't distinguish keydown/up :-/ */
 172                 rc_keydown_notimeout(ir->dev, RC_PROTO_UNKNOWN, data, 0);
 173                 rc_keyup(ir->dev);
 174         }
 175 }
 176
 177 static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer)
 178 {
 179         unsigned long missed;
 180         struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer);
 181
 182         cx88_ir_handle_key(ir);
 183         missed = hrtimer_forward_now(&ir->timer,
 184                                      ktime_set(0, ir->polling * 1000000));
 185         if (missed > 1)
 186                 ir_dprintk("Missed ticks %ld\n", missed - 1);
 187
 188         return HRTIMER_RESTART;
 189 }
 190
 191 static int __cx88_ir_start(void *priv)
 192 {
 193         struct cx88_core *core = priv;
 194         struct cx88_IR *ir;
 195
 196         if (!core || !core->ir)
 197                 return -EINVAL;
 198
 199         ir = core->ir;
 200
 201         if (ir->polling) {
 202                 hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 203                 ir->timer.function = cx88_ir_work;
 204                 hrtimer_start(&ir->timer,
 205                               ktime_set(0, ir->polling * 1000000),
 206                               HRTIMER_MODE_REL);
 207         }
 208         if (ir->sampling) {
 209                 core->pci_irqmask |= PCI_INT_IR_SMPINT;
 210                 cx_write(MO_DDS_IO, 0x33F286 * ir_samplerate); /* samplerate */
 211                 cx_write(MO_DDSCFG_IO, 0x5); /* enable */
 212         }
 213         return 0;
 214 }
 215
 216 static void __cx88_ir_stop(void *priv)
 217 {
 218         struct cx88_core *core = priv;
 219         struct cx88_IR *ir;
 220
 221         if (!core || !core->ir)
 222                 return;
 223
 224         ir = core->ir;
 225         if (ir->sampling) {
 226                 cx_write(MO_DDSCFG_IO, 0x0);
 227                 core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
 228         }
 229
 230         if (ir->polling)
 231                 hrtimer_cancel(&ir->timer);
 232 }
 233
 234 int cx88_ir_start(struct cx88_core *core)
 235 {
 236         if (core->ir->users)
 237                 return __cx88_ir_start(core);
 238
 239         return 0;
 240 }
 241 EXPORT_SYMBOL(cx88_ir_start);
 242
 243 void cx88_ir_stop(struct cx88_core *core)
 244 {
 245         if (core->ir->users)
 246                 __cx88_ir_stop(core);
 247 }
 248 EXPORT_SYMBOL(cx88_ir_stop);
 249
 250 static int cx88_ir_open(struct rc_dev *rc)
 251 {
 252         struct cx88_core *core = rc->priv;
 253
 254         core->ir->users++;
 255         return __cx88_ir_start(core);
 256 }
 257
 258 static void cx88_ir_close(struct rc_dev *rc)
 259 {
 260         struct cx88_core *core = rc->priv;
 261
 262         core->ir->users--;
 263         if (!core->ir->users)
 264                 __cx88_ir_stop(core);
 265 }
 266
 267 /* ---------------------------------------------------------------------- */
 268
 269 int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
 270 {
 271         struct cx88_IR *ir;
 272         struct rc_dev *dev;
 273         char *ir_codes = NULL;
 274         u64 rc_proto = RC_PROTO_BIT_OTHER;
 275         int err = -ENOMEM;
 276         u32 hardware_mask = 0;  /* For devices with a hardware mask, when
 277                                  * used with a full-code IR table
 278                                  */
 279
 280         ir = kzalloc(sizeof(*ir), GFP_KERNEL);
 281         dev = rc_allocate_device(RC_DRIVER_IR_RAW);
 282         if (!ir || !dev)
 283                 goto err_out_free;
 284
 285         ir->dev = dev;
 286
 287         /* detect & configure */
 288         switch (core->boardnr) {
 289         case CX88_BOARD_DNTV_LIVE_DVB_T:
 290         case CX88_BOARD_KWORLD_DVB_T:
 291         case CX88_BOARD_KWORLD_DVB_T_CX22702:
 292                 ir_codes = RC_MAP_DNTV_LIVE_DVB_T;
 293                 ir->gpio_addr = MO_GP1_IO;
 294                 ir->mask_keycode = 0x1f;
 295                 ir->mask_keyup = 0x60;
 296                 ir->polling = 50; /* ms */
 297                 break;
 298         case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
 299                 ir_codes = RC_MAP_CINERGY_1400;
 300                 ir->sampling = 0xeb04; /* address */
 301                 break;
 302         case CX88_BOARD_HAUPPAUGE:
 303         case CX88_BOARD_HAUPPAUGE_DVB_T1:
 304         case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 305         case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 306         case CX88_BOARD_HAUPPAUGE_HVR1100:
 307         case CX88_BOARD_HAUPPAUGE_HVR3000:
 308         case CX88_BOARD_HAUPPAUGE_HVR4000:
 309         case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
 310         case CX88_BOARD_PCHDTV_HD3000:
 311         case CX88_BOARD_PCHDTV_HD5500:
 312         case CX88_BOARD_HAUPPAUGE_IRONLY:
 313                 ir_codes = RC_MAP_HAUPPAUGE;
 314                 ir->sampling = 1;
 315                 break;
 316         case CX88_BOARD_WINFAST_DTV2000H:
 317         case CX88_BOARD_WINFAST_DTV2000H_J:
 318         case CX88_BOARD_WINFAST_DTV1800H:
 319         case CX88_BOARD_WINFAST_DTV1800H_XC4000:
 320         case CX88_BOARD_WINFAST_DTV2000H_PLUS:
 321                 ir_codes = RC_MAP_WINFAST;
 322                 ir->gpio_addr = MO_GP0_IO;
 323                 ir->mask_keycode = 0x8f8;
 324                 ir->mask_keyup = 0x100;
 325                 ir->polling = 50; /* ms */
 326                 break;
 327         case CX88_BOARD_WINFAST2000XP_EXPERT:
 328         case CX88_BOARD_WINFAST_DTV1000:
 329         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
 330         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36:
 331         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43:
 332                 ir_codes = RC_MAP_WINFAST;
 333                 ir->gpio_addr = MO_GP0_IO;
 334                 ir->mask_keycode = 0x8f8;
 335                 ir->mask_keyup = 0x100;
 336                 ir->polling = 1; /* ms */
 337                 break;
 338         case CX88_BOARD_IODATA_GVBCTV7E:
 339                 ir_codes = RC_MAP_IODATA_BCTV7E;
 340                 ir->gpio_addr = MO_GP0_IO;
 341                 ir->mask_keycode = 0xfd;
 342                 ir->mask_keydown = 0x02;
 343                 ir->polling = 5; /* ms */
 344                 break;
 345         case CX88_BOARD_PROLINK_PLAYTVPVR:
 346         case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
 347                 /*
 348                  * It seems that this hardware is paired with NEC extended
 349                  * address 0x866b. So, unfortunately, its usage with other
 350                  * IR's with different address won't work. Still, there are
 351                  * other IR's from the same manufacturer that works, like the
 352                  * 002-T mini RC, provided with newer PV hardware
 353                  */
 354                 ir_codes = RC_MAP_PIXELVIEW_MK12;
 355                 rc_proto = RC_PROTO_BIT_NECX;
 356                 ir->gpio_addr = MO_GP1_IO;
 357                 ir->mask_keyup = 0x80;
 358                 ir->polling = 10; /* ms */
 359                 hardware_mask = 0x3f;   /* Hardware returns only 6 bits from command part */
 360                 break;
 361         case CX88_BOARD_PROLINK_PV_8000GT:
 362         case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
 363                 ir_codes = RC_MAP_PIXELVIEW_NEW;
 364                 ir->gpio_addr = MO_GP1_IO;
 365                 ir->mask_keycode = 0x3f;
 366                 ir->mask_keyup = 0x80;
 367                 ir->polling = 1; /* ms */
 368                 break;
 369         case CX88_BOARD_KWORLD_LTV883:
 370                 ir_codes = RC_MAP_PIXELVIEW;
 371                 ir->gpio_addr = MO_GP1_IO;
 372                 ir->mask_keycode = 0x1f;
 373                 ir->mask_keyup = 0x60;
 374                 ir->polling = 1; /* ms */
 375                 break;
 376         case CX88_BOARD_ADSTECH_DVB_T_PCI:
 377                 ir_codes = RC_MAP_ADSTECH_DVB_T_PCI;
 378                 ir->gpio_addr = MO_GP1_IO;
 379                 ir->mask_keycode = 0xbf;
 380                 ir->mask_keyup = 0x40;
 381                 ir->polling = 50; /* ms */
 382                 break;
 383         case CX88_BOARD_MSI_TVANYWHERE_MASTER:
 384                 ir_codes = RC_MAP_MSI_TVANYWHERE;
 385                 ir->gpio_addr = MO_GP1_IO;
 386                 ir->mask_keycode = 0x1f;
 387                 ir->mask_keyup = 0x40;
 388                 ir->polling = 1; /* ms */
 389                 break;
 390         case CX88_BOARD_AVERTV_303:
 391         case CX88_BOARD_AVERTV_STUDIO_303:
 392                 ir_codes         = RC_MAP_AVERTV_303;
 393                 ir->gpio_addr    = MO_GP2_IO;
 394                 ir->mask_keycode = 0xfb;
 395                 ir->mask_keydown = 0x02;
 396                 ir->polling      = 50; /* ms */
 397                 break;
 398         case CX88_BOARD_OMICOM_SS4_PCI:
 399         case CX88_BOARD_SATTRADE_ST4200:
 400         case CX88_BOARD_TBS_8920:
 401         case CX88_BOARD_TBS_8910:
 402         case CX88_BOARD_PROF_7300:
 403         case CX88_BOARD_PROF_7301:
 404         case CX88_BOARD_PROF_6200:
 405                 ir_codes = RC_MAP_TBS_NEC;
 406                 ir->sampling = 0xff00; /* address */
 407                 break;
 408         case CX88_BOARD_TEVII_S464:
 409         case CX88_BOARD_TEVII_S460:
 410         case CX88_BOARD_TEVII_S420:
 411                 ir_codes = RC_MAP_TEVII_NEC;
 412                 ir->sampling = 0xff00; /* address */
 413                 break;
 414         case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
 415                 ir_codes         = RC_MAP_DNTV_LIVE_DVBT_PRO;
 416                 ir->sampling     = 0xff00; /* address */
 417                 break;
 418         case CX88_BOARD_NORWOOD_MICRO:
 419                 ir_codes         = RC_MAP_NORWOOD;
 420                 ir->gpio_addr    = MO_GP1_IO;
 421                 ir->mask_keycode = 0x0e;
 422                 ir->mask_keyup   = 0x80;
 423                 ir->polling      = 50; /* ms */
 424                 break;
 425         case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
 426                 ir_codes         = RC_MAP_NPGTECH;
 427                 ir->gpio_addr    = MO_GP0_IO;
 428                 ir->mask_keycode = 0xfa;
 429                 ir->polling      = 50; /* ms */
 430                 break;
 431         case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 432                 ir_codes         = RC_MAP_PINNACLE_PCTV_HD;
 433                 ir->sampling     = 1;
 434                 break;
 435         case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
 436                 ir_codes         = RC_MAP_POWERCOLOR_REAL_ANGEL;
 437                 ir->gpio_addr    = MO_GP2_IO;
 438                 ir->mask_keycode = 0x7e;
 439                 ir->polling      = 100; /* ms */
 440                 break;
 441         case CX88_BOARD_TWINHAN_VP1027_DVBS:
 442                 ir_codes         = RC_MAP_TWINHAN_VP1027_DVBS;
 443                 ir->sampling     = 0xff00; /* address */
 444                 break;
 445         }
 446
 447         if (!ir_codes) {
 448                 err = -ENODEV;
 449                 goto err_out_free;
 450         }
 451
 452         /*
 453          * The usage of mask_keycode were very convenient, due to several
 454          * reasons. Among others, the scancode tables were using the scancode
 455          * as the index elements. So, the less bits it was used, the smaller
 456          * the table were stored. After the input changes, the better is to use
 457          * the full scancodes, since it allows replacing the IR remote by
 458          * another one. Unfortunately, there are still some hardware, like
 459          * Pixelview Ultra Pro, where only part of the scancode is sent via
 460          * GPIO. So, there's no way to get the full scancode. Due to that,
 461          * hardware_mask were introduced here: it represents those hardware
 462          * that has such limits.
 463          */
 464         if (hardware_mask && !ir->mask_keycode)
 465                 ir->mask_keycode = hardware_mask;
 466
 467         /* init input device */
 468         snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
 469         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
 470
 471         dev->device_name = ir->name;
 472         dev->input_phys = ir->phys;
 473         dev->input_id.bustype = BUS_PCI;
 474         dev->input_id.version = 1;
 475         if (pci->subsystem_vendor) {
 476                 dev->input_id.vendor = pci->subsystem_vendor;
 477                 dev->input_id.product = pci->subsystem_device;
 478         } else {
 479                 dev->input_id.vendor = pci->vendor;
 480                 dev->input_id.product = pci->device;
 481         }
 482         dev->dev.parent = &pci->dev;
 483         dev->map_name = ir_codes;
 484         dev->driver_name = MODULE_NAME;
 485         dev->priv = core;
 486         dev->open = cx88_ir_open;
 487         dev->close = cx88_ir_close;
 488         dev->scancode_mask = hardware_mask;
 489
 490         if (ir->sampling) {
 491                 dev->timeout = 10 * 1000 * 1000; /* 10 ms */
 492         } else {
 493                 dev->driver_type = RC_DRIVER_SCANCODE;
 494                 dev->allowed_protocols = rc_proto;
 495         }
 496
 497         ir->core = core;
 498         core->ir = ir;
 499
 500         /* all done */
 501         err = rc_register_device(dev);
 502         if (err)
 503                 goto err_out_free;
 504
 505         return 0;
 506
 507 err_out_free:
 508         rc_free_device(dev);
 509         core->ir = NULL;
 510         kfree(ir);
 511         return err;
 512 }
 513
 514 int cx88_ir_fini(struct cx88_core *core)
 515 {
 516         struct cx88_IR *ir = core->ir;
 517
 518         /* skip detach on non attached boards */
 519         if (!ir)
 520                 return 0;
 521
 522         cx88_ir_stop(core);
 523         rc_unregister_device(ir->dev);
 524         kfree(ir);
 525
 526         /* done */
 527         core->ir = NULL;
 528         return 0;
 529 }
 530
 531 /* ---------------------------------------------------------------------- */
 532
 533 void cx88_ir_irq(struct cx88_core *core)
 534 {
 535         struct cx88_IR *ir = core->ir;
 536         u32 samples;
 537         unsigned int todo, bits;
 538         struct ir_raw_event ev;
 539
 540         if (!ir || !ir->sampling)
 541                 return;
 542
 543         /*
 544          * Samples are stored in a 32 bit register, oldest sample in
 545          * the msb. A set bit represents space and an unset bit
 546          * represents a pulse.
 547          */
 548         samples = cx_read(MO_SAMPLE_IO);
 549
 550         if (samples == 0xff && ir->dev->idle)
 551                 return;
 552
 553         init_ir_raw_event(&ev);
 554         for (todo = 32; todo > 0; todo -= bits) {
 555                 ev.pulse = samples & 0x80000000 ? false : true;
 556                 bits = min(todo, 32U - fls(ev.pulse ? samples : ~samples));
 557                 ev.duration = (bits * (NSEC_PER_SEC / 1000)) / ir_samplerate;
 558                 ir_raw_event_store_with_filter(ir->dev, &ev);
 559                 samples <<= bits;
 560         }
 561         ir_raw_event_handle(ir->dev);
 562 }
 563
 564 static int get_key_pvr2000(struct IR_i2c *ir, enum rc_proto *protocol,
 565                            u32 *scancode, u8 *toggle)
 566 {
 567         int flags, code;
 568
 569         /* poll IR chip */
 570         flags = i2c_smbus_read_byte_data(ir->c, 0x10);
 571         if (flags < 0) {
 572                 dprintk("read error\n");
 573                 return 0;
 574         }
 575         /* key pressed ? */
 576         if (0 == (flags & 0x80))
 577                 return 0;
 578
 579         /* read actual key code */
 580         code = i2c_smbus_read_byte_data(ir->c, 0x00);
 581         if (code < 0) {
 582                 dprintk("read error\n");
 583                 return 0;
 584         }
 585
 586         dprintk("IR Key/Flags: (0x%02x/0x%02x)\n",
 587                 code & 0xff, flags & 0xff);
 588
 589         *protocol = RC_PROTO_UNKNOWN;
 590         *scancode = code & 0xff;
 591         *toggle = 0;
 592         return 1;
 593 }
 594
 595 void cx88_i2c_init_ir(struct cx88_core *core)
 596 {
 597         struct i2c_board_info info;
 598         static const unsigned short default_addr_list[] = {
 599                 0x18, 0x6b, 0x71,
 600                 I2C_CLIENT_END
 601         };
 602         static const unsigned short pvr2000_addr_list[] = {
 603                 0x18, 0x1a,
 604                 I2C_CLIENT_END
 605         };
 606         const unsigned short *addr_list = default_addr_list;
 607         const unsigned short *addrp;
 608         /* Instantiate the IR receiver device, if present */
 609         if (core->i2c_rc != 0)
 610                 return;
 611
 612         memset(&info, 0, sizeof(struct i2c_board_info));
 613         strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
 614
 615         switch (core->boardnr) {
 616         case CX88_BOARD_LEADTEK_PVR2000:
 617                 addr_list = pvr2000_addr_list;
 618                 core->init_data.name = "cx88 Leadtek PVR 2000 remote";
 619                 core->init_data.type = RC_PROTO_BIT_UNKNOWN;
 620                 core->init_data.get_key = get_key_pvr2000;
 621                 core->init_data.ir_codes = RC_MAP_EMPTY;
 622                 break;
 623         }
 624
 625         /*
 626          * We can't call i2c_new_probed_device() because it uses
 627          * quick writes for probing and at least some RC receiver
 628          * devices only reply to reads.
 629          * Also, Hauppauge XVR needs to be specified, as address 0x71
 630          * conflicts with another remote type used with saa7134
 631          */
 632         for (addrp = addr_list; *addrp != I2C_CLIENT_END; addrp++) {
 633                 info.platform_data = NULL;
 634                 memset(&core->init_data, 0, sizeof(core->init_data));
 635
 636                 if (*addrp == 0x71) {
 637                         /* Hauppauge Z8F0811 */
 638                         strlcpy(info.type, "ir_z8f0811_haup", I2C_NAME_SIZE);
 639                         core->init_data.name = core->board.name;
 640                         core->init_data.ir_codes = RC_MAP_HAUPPAUGE;
 641                         core->init_data.type = RC_PROTO_BIT_RC5 |
 642                                 RC_PROTO_BIT_RC6_MCE | RC_PROTO_BIT_RC6_6A_32;
 643                         core->init_data.internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR;
 644
 645                         info.platform_data = &core->init_data;
 646                 }
 647                 if (i2c_smbus_xfer(&core->i2c_adap, *addrp, 0,
 648                                    I2C_SMBUS_READ, 0,
 649                                    I2C_SMBUS_QUICK, NULL) >= 0) {
 650                         info.addr = *addrp;
 651                         i2c_new_device(&core->i2c_adap, &info);
 652                         break;
 653                 }
 654         }
 655 }
 656
 657 /* ---------------------------------------------------------------------- */
 658
 659 MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
 660 MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
 661 MODULE_LICENSE("GPL");