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, ir->polling * 1000000);
 184         if (missed > 1)
 185                 ir_dprintk("Missed ticks %ld\n", missed - 1);
 186
 187         return HRTIMER_RESTART;
 188 }
 189
 190 static int __cx88_ir_start(void *priv)
 191 {
 192         struct cx88_core *core = priv;
 193         struct cx88_IR *ir;
 194
 195         if (!core || !core->ir)
 196                 return -EINVAL;
 197
 198         ir = core->ir;
 199
 200         if (ir->polling) {
 201                 hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 202                 ir->timer.function = cx88_ir_work;
 203                 hrtimer_start(&ir->timer, ir->polling * 1000000,
 204                               HRTIMER_MODE_REL);
 205         }
 206         if (ir->sampling) {
 207                 core->pci_irqmask |= PCI_INT_IR_SMPINT;
 208                 cx_write(MO_DDS_IO, 0x33F286 * ir_samplerate); /* samplerate */
 209                 cx_write(MO_DDSCFG_IO, 0x5); /* enable */
 210         }
 211         return 0;
 212 }
 213
 214 static void __cx88_ir_stop(void *priv)
 215 {
 216         struct cx88_core *core = priv;
 217         struct cx88_IR *ir;
 218
 219         if (!core || !core->ir)
 220                 return;
 221
 222         ir = core->ir;
 223         if (ir->sampling) {
 224                 cx_write(MO_DDSCFG_IO, 0x0);
 225                 core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
 226         }
 227
 228         if (ir->polling)
 229                 hrtimer_cancel(&ir->timer);
 230 }
 231
 232 int cx88_ir_start(struct cx88_core *core)
 233 {
 234         if (core->ir->users)
 235                 return __cx88_ir_start(core);
 236
 237         return 0;
 238 }
 239 EXPORT_SYMBOL(cx88_ir_start);
 240
 241 void cx88_ir_stop(struct cx88_core *core)
 242 {
 243         if (core->ir->users)
 244                 __cx88_ir_stop(core);
 245 }
 246 EXPORT_SYMBOL(cx88_ir_stop);
 247
 248 static int cx88_ir_open(struct rc_dev *rc)
 249 {
 250         struct cx88_core *core = rc->priv;
 251
 252         core->ir->users++;
 253         return __cx88_ir_start(core);
 254 }
 255
 256 static void cx88_ir_close(struct rc_dev *rc)
 257 {
 258         struct cx88_core *core = rc->priv;
 259
 260         core->ir->users--;
 261         if (!core->ir->users)
 262                 __cx88_ir_stop(core);
 263 }
 264
 265 /* ---------------------------------------------------------------------- */
 266
 267 int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
 268 {
 269         struct cx88_IR *ir;
 270         struct rc_dev *dev;
 271         char *ir_codes = NULL;
 272         u64 rc_proto = RC_PROTO_BIT_OTHER;
 273         int err = -ENOMEM;
 274         u32 hardware_mask = 0;  /* For devices with a hardware mask, when
 275                                  * used with a full-code IR table
 276                                  */
 277
 278         ir = kzalloc(sizeof(*ir), GFP_KERNEL);
 279         dev = rc_allocate_device(RC_DRIVER_IR_RAW);
 280         if (!ir || !dev)
 281                 goto err_out_free;
 282
 283         ir->dev = dev;
 284
 285         /* detect & configure */
 286         switch (core->boardnr) {
 287         case CX88_BOARD_DNTV_LIVE_DVB_T:
 288         case CX88_BOARD_KWORLD_DVB_T:
 289         case CX88_BOARD_KWORLD_DVB_T_CX22702:
 290                 ir_codes = RC_MAP_DNTV_LIVE_DVB_T;
 291                 ir->gpio_addr = MO_GP1_IO;
 292                 ir->mask_keycode = 0x1f;
 293                 ir->mask_keyup = 0x60;
 294                 ir->polling = 50; /* ms */
 295                 break;
 296         case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
 297                 ir_codes = RC_MAP_CINERGY_1400;
 298                 ir->sampling = 0xeb04; /* address */
 299                 break;
 300         case CX88_BOARD_HAUPPAUGE:
 301         case CX88_BOARD_HAUPPAUGE_DVB_T1:
 302         case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 303         case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 304         case CX88_BOARD_HAUPPAUGE_HVR1100:
 305         case CX88_BOARD_HAUPPAUGE_HVR3000:
 306         case CX88_BOARD_HAUPPAUGE_HVR4000:
 307         case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
 308         case CX88_BOARD_PCHDTV_HD3000:
 309         case CX88_BOARD_PCHDTV_HD5500:
 310         case CX88_BOARD_HAUPPAUGE_IRONLY:
 311                 ir_codes = RC_MAP_HAUPPAUGE;
 312                 ir->sampling = 1;
 313                 break;
 314         case CX88_BOARD_WINFAST_DTV2000H:
 315         case CX88_BOARD_WINFAST_DTV2000H_J:
 316         case CX88_BOARD_WINFAST_DTV1800H:
 317         case CX88_BOARD_WINFAST_DTV1800H_XC4000:
 318         case CX88_BOARD_WINFAST_DTV2000H_PLUS:
 319                 ir_codes = RC_MAP_WINFAST;
 320                 ir->gpio_addr = MO_GP0_IO;
 321                 ir->mask_keycode = 0x8f8;
 322                 ir->mask_keyup = 0x100;
 323                 ir->polling = 50; /* ms */
 324                 break;
 325         case CX88_BOARD_WINFAST2000XP_EXPERT:
 326         case CX88_BOARD_WINFAST_DTV1000:
 327         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
 328         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36:
 329         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43:
 330                 ir_codes = RC_MAP_WINFAST;
 331                 ir->gpio_addr = MO_GP0_IO;
 332                 ir->mask_keycode = 0x8f8;
 333                 ir->mask_keyup = 0x100;
 334                 ir->polling = 1; /* ms */
 335                 break;
 336         case CX88_BOARD_IODATA_GVBCTV7E:
 337                 ir_codes = RC_MAP_IODATA_BCTV7E;
 338                 ir->gpio_addr = MO_GP0_IO;
 339                 ir->mask_keycode = 0xfd;
 340                 ir->mask_keydown = 0x02;
 341                 ir->polling = 5; /* ms */
 342                 break;
 343         case CX88_BOARD_PROLINK_PLAYTVPVR:
 344         case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
 345                 /*
 346                  * It seems that this hardware is paired with NEC extended
 347                  * address 0x866b. So, unfortunately, its usage with other
 348                  * IR's with different address won't work. Still, there are
 349                  * other IR's from the same manufacturer that works, like the
 350                  * 002-T mini RC, provided with newer PV hardware
 351                  */
 352                 ir_codes = RC_MAP_PIXELVIEW_MK12;
 353                 rc_proto = RC_PROTO_BIT_NECX;
 354                 ir->gpio_addr = MO_GP1_IO;
 355                 ir->mask_keyup = 0x80;
 356                 ir->polling = 10; /* ms */
 357                 hardware_mask = 0x3f;   /* Hardware returns only 6 bits from command part */
 358                 break;
 359         case CX88_BOARD_PROLINK_PV_8000GT:
 360         case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
 361                 ir_codes = RC_MAP_PIXELVIEW_NEW;
 362                 ir->gpio_addr = MO_GP1_IO;
 363                 ir->mask_keycode = 0x3f;
 364                 ir->mask_keyup = 0x80;
 365                 ir->polling = 1; /* ms */
 366                 break;
 367         case CX88_BOARD_KWORLD_LTV883:
 368                 ir_codes = RC_MAP_PIXELVIEW;
 369                 ir->gpio_addr = MO_GP1_IO;
 370                 ir->mask_keycode = 0x1f;
 371                 ir->mask_keyup = 0x60;
 372                 ir->polling = 1; /* ms */
 373                 break;
 374         case CX88_BOARD_ADSTECH_DVB_T_PCI:
 375                 ir_codes = RC_MAP_ADSTECH_DVB_T_PCI;
 376                 ir->gpio_addr = MO_GP1_IO;
 377                 ir->mask_keycode = 0xbf;
 378                 ir->mask_keyup = 0x40;
 379                 ir->polling = 50; /* ms */
 380                 break;
 381         case CX88_BOARD_MSI_TVANYWHERE_MASTER:
 382                 ir_codes = RC_MAP_MSI_TVANYWHERE;
 383                 ir->gpio_addr = MO_GP1_IO;
 384                 ir->mask_keycode = 0x1f;
 385                 ir->mask_keyup = 0x40;
 386                 ir->polling = 1; /* ms */
 387                 break;
 388         case CX88_BOARD_AVERTV_303:
 389         case CX88_BOARD_AVERTV_STUDIO_303:
 390                 ir_codes         = RC_MAP_AVERTV_303;
 391                 ir->gpio_addr    = MO_GP2_IO;
 392                 ir->mask_keycode = 0xfb;
 393                 ir->mask_keydown = 0x02;
 394                 ir->polling      = 50; /* ms */
 395                 break;
 396         case CX88_BOARD_OMICOM_SS4_PCI:
 397         case CX88_BOARD_SATTRADE_ST4200:
 398         case CX88_BOARD_TBS_8920:
 399         case CX88_BOARD_TBS_8910:
 400         case CX88_BOARD_PROF_7300:
 401         case CX88_BOARD_PROF_7301:
 402         case CX88_BOARD_PROF_6200:
 403                 ir_codes = RC_MAP_TBS_NEC;
 404                 ir->sampling = 0xff00; /* address */
 405                 break;
 406         case CX88_BOARD_TEVII_S464:
 407         case CX88_BOARD_TEVII_S460:
 408         case CX88_BOARD_TEVII_S420:
 409                 ir_codes = RC_MAP_TEVII_NEC;
 410                 ir->sampling = 0xff00; /* address */
 411                 break;
 412         case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
 413                 ir_codes         = RC_MAP_DNTV_LIVE_DVBT_PRO;
 414                 ir->sampling     = 0xff00; /* address */
 415                 break;
 416         case CX88_BOARD_NORWOOD_MICRO:
 417                 ir_codes         = RC_MAP_NORWOOD;
 418                 ir->gpio_addr    = MO_GP1_IO;
 419                 ir->mask_keycode = 0x0e;
 420                 ir->mask_keyup   = 0x80;
 421                 ir->polling      = 50; /* ms */
 422                 break;
 423         case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
 424                 ir_codes         = RC_MAP_NPGTECH;
 425                 ir->gpio_addr    = MO_GP0_IO;
 426                 ir->mask_keycode = 0xfa;
 427                 ir->polling      = 50; /* ms */
 428                 break;
 429         case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 430                 ir_codes         = RC_MAP_PINNACLE_PCTV_HD;
 431                 ir->sampling     = 1;
 432                 break;
 433         case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
 434                 ir_codes         = RC_MAP_POWERCOLOR_REAL_ANGEL;
 435                 ir->gpio_addr    = MO_GP2_IO;
 436                 ir->mask_keycode = 0x7e;
 437                 ir->polling      = 100; /* ms */
 438                 break;
 439         case CX88_BOARD_TWINHAN_VP1027_DVBS:
 440                 ir_codes         = RC_MAP_TWINHAN_VP1027_DVBS;
 441                 ir->sampling     = 0xff00; /* address */
 442                 break;
 443         }
 444
 445         if (!ir_codes) {
 446                 err = -ENODEV;
 447                 goto err_out_free;
 448         }
 449
 450         /*
 451          * The usage of mask_keycode were very convenient, due to several
 452          * reasons. Among others, the scancode tables were using the scancode
 453          * as the index elements. So, the less bits it was used, the smaller
 454          * the table were stored. After the input changes, the better is to use
 455          * the full scancodes, since it allows replacing the IR remote by
 456          * another one. Unfortunately, there are still some hardware, like
 457          * Pixelview Ultra Pro, where only part of the scancode is sent via
 458          * GPIO. So, there's no way to get the full scancode. Due to that,
 459          * hardware_mask were introduced here: it represents those hardware
 460          * that has such limits.
 461          */
 462         if (hardware_mask && !ir->mask_keycode)
 463                 ir->mask_keycode = hardware_mask;
 464
 465         /* init input device */
 466         snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
 467         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
 468
 469         dev->device_name = ir->name;
 470         dev->input_phys = ir->phys;
 471         dev->input_id.bustype = BUS_PCI;
 472         dev->input_id.version = 1;
 473         if (pci->subsystem_vendor) {
 474                 dev->input_id.vendor = pci->subsystem_vendor;
 475                 dev->input_id.product = pci->subsystem_device;
 476         } else {
 477                 dev->input_id.vendor = pci->vendor;
 478                 dev->input_id.product = pci->device;
 479         }
 480         dev->dev.parent = &pci->dev;
 481         dev->map_name = ir_codes;
 482         dev->driver_name = MODULE_NAME;
 483         dev->priv = core;
 484         dev->open = cx88_ir_open;
 485         dev->close = cx88_ir_close;
 486         dev->scancode_mask = hardware_mask;
 487
 488         if (ir->sampling) {
 489                 dev->timeout = 10 * 1000 * 1000; /* 10 ms */
 490         } else {
 491                 dev->driver_type = RC_DRIVER_SCANCODE;
 492                 dev->allowed_protocols = rc_proto;
 493         }
 494
 495         ir->core = core;
 496         core->ir = ir;
 497
 498         /* all done */
 499         err = rc_register_device(dev);
 500         if (err)
 501                 goto err_out_free;
 502
 503         return 0;
 504
 505 err_out_free:
 506         rc_free_device(dev);
 507         core->ir = NULL;
 508         kfree(ir);
 509         return err;
 510 }
 511
 512 int cx88_ir_fini(struct cx88_core *core)
 513 {
 514         struct cx88_IR *ir = core->ir;
 515
 516         /* skip detach on non attached boards */
 517         if (!ir)
 518                 return 0;
 519
 520         cx88_ir_stop(core);
 521         rc_unregister_device(ir->dev);
 522         kfree(ir);
 523
 524         /* done */
 525         core->ir = NULL;
 526         return 0;
 527 }
 528
 529 /* ---------------------------------------------------------------------- */
 530
 531 void cx88_ir_irq(struct cx88_core *core)
 532 {
 533         struct cx88_IR *ir = core->ir;
 534         u32 samples;
 535         unsigned int todo, bits;
 536         struct ir_raw_event ev;
 537
 538         if (!ir || !ir->sampling)
 539                 return;
 540
 541         /*
 542          * Samples are stored in a 32 bit register, oldest sample in
 543          * the msb. A set bit represents space and an unset bit
 544          * represents a pulse.
 545          */
 546         samples = cx_read(MO_SAMPLE_IO);
 547
 548         if (samples == 0xff && ir->dev->idle)
 549                 return;
 550
 551         init_ir_raw_event(&ev);
 552         for (todo = 32; todo > 0; todo -= bits) {
 553                 ev.pulse = samples & 0x80000000 ? false : true;
 554                 bits = min(todo, 32U - fls(ev.pulse ? samples : ~samples));
 555                 ev.duration = (bits * (NSEC_PER_SEC / 1000)) / ir_samplerate;
 556                 ir_raw_event_store_with_filter(ir->dev, &ev);
 557                 samples <<= bits;
 558         }
 559         ir_raw_event_handle(ir->dev);
 560 }
 561
 562 static int get_key_pvr2000(struct IR_i2c *ir, enum rc_proto *protocol,
 563                            u32 *scancode, u8 *toggle)
 564 {
 565         int flags, code;
 566
 567         /* poll IR chip */
 568         flags = i2c_smbus_read_byte_data(ir->c, 0x10);
 569         if (flags < 0) {
 570                 dprintk("read error\n");
 571                 return 0;
 572         }
 573         /* key pressed ? */
 574         if (0 == (flags & 0x80))
 575                 return 0;
 576
 577         /* read actual key code */
 578         code = i2c_smbus_read_byte_data(ir->c, 0x00);
 579         if (code < 0) {
 580                 dprintk("read error\n");
 581                 return 0;
 582         }
 583
 584         dprintk("IR Key/Flags: (0x%02x/0x%02x)\n",
 585                 code & 0xff, flags & 0xff);
 586
 587         *protocol = RC_PROTO_UNKNOWN;
 588         *scancode = code & 0xff;
 589         *toggle = 0;
 590         return 1;
 591 }
 592
 593 void cx88_i2c_init_ir(struct cx88_core *core)
 594 {
 595         struct i2c_board_info info;
 596         const unsigned short default_addr_list[] = {
 597                 0x18, 0x6b, 0x71,
 598                 I2C_CLIENT_END
 599         };
 600         const unsigned short pvr2000_addr_list[] = {
 601                 0x18, 0x1a,
 602                 I2C_CLIENT_END
 603         };
 604         const unsigned short *addr_list = default_addr_list;
 605         const unsigned short *addrp;
 606         /* Instantiate the IR receiver device, if present */
 607         if (core->i2c_rc != 0)
 608                 return;
 609
 610         memset(&info, 0, sizeof(struct i2c_board_info));
 611         strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
 612
 613         switch (core->boardnr) {
 614         case CX88_BOARD_LEADTEK_PVR2000:
 615                 addr_list = pvr2000_addr_list;
 616                 core->init_data.name = "cx88 Leadtek PVR 2000 remote";
 617                 core->init_data.type = RC_PROTO_BIT_UNKNOWN;
 618                 core->init_data.get_key = get_key_pvr2000;
 619                 core->init_data.ir_codes = RC_MAP_EMPTY;
 620                 break;
 621         }
 622
 623         /*
 624          * We can't call i2c_new_probed_device() because it uses
 625          * quick writes for probing and at least some RC receiver
 626          * devices only reply to reads.
 627          * Also, Hauppauge XVR needs to be specified, as address 0x71
 628          * conflicts with another remote type used with saa7134
 629          */
 630         for (addrp = addr_list; *addrp != I2C_CLIENT_END; addrp++) {
 631                 info.platform_data = NULL;
 632                 memset(&core->init_data, 0, sizeof(core->init_data));
 633
 634                 if (*addrp == 0x71) {
 635                         /* Hauppauge XVR */
 636                         core->init_data.name = "cx88 Hauppauge XVR remote";
 637                         core->init_data.ir_codes = RC_MAP_HAUPPAUGE;
 638                         core->init_data.type = RC_PROTO_BIT_RC5 |
 639                                 RC_PROTO_BIT_RC6_MCE | RC_PROTO_BIT_RC6_6A_32;
 640                         core->init_data.internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR;
 641
 642                         info.platform_data = &core->init_data;
 643                 }
 644                 if (i2c_smbus_xfer(&core->i2c_adap, *addrp, 0,
 645                                    I2C_SMBUS_READ, 0,
 646                                    I2C_SMBUS_QUICK, NULL) >= 0) {
 647                         info.addr = *addrp;
 648                         i2c_new_device(&core->i2c_adap, &info);
 649                         break;
 650                 }
 651         }
 652 }
 653
 654 /* ---------------------------------------------------------------------- */
 655
 656 MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
 657 MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
 658 MODULE_LICENSE("GPL");