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_TYPE_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_TYPE_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_TYPE_UNKNOWN, data, 0);
 158                 else
 159                         rc_keyup(ir->dev);
 160
 161         } else if (ir->mask_keyup) {
 162                 /* bit cleared on keydown */
 163                 if (0 == (gpio & ir->mask_keyup))
 164                         rc_keydown_notimeout(ir->dev, RC_TYPE_UNKNOWN, data, 0);
 165                 else
 166                         rc_keyup(ir->dev);
 167
 168         } else {
 169                 /* can't distinguish keydown/up :-/ */
 170                 rc_keydown_notimeout(ir->dev, RC_TYPE_UNKNOWN, data, 0);
 171                 rc_keyup(ir->dev);
 172         }
 173 }
 174
 175 static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer)
 176 {
 177         unsigned long missed;
 178         struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer);
 179
 180         cx88_ir_handle_key(ir);
 181         missed = hrtimer_forward_now(&ir->timer, ir->polling * 1000000);
 182         if (missed > 1)
 183                 ir_dprintk("Missed ticks %ld\n", missed - 1);
 184
 185         return HRTIMER_RESTART;
 186 }
 187
 188 static int __cx88_ir_start(void *priv)
 189 {
 190         struct cx88_core *core = priv;
 191         struct cx88_IR *ir;
 192
 193         if (!core || !core->ir)
 194                 return -EINVAL;
 195
 196         ir = core->ir;
 197
 198         if (ir->polling) {
 199                 hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 200                 ir->timer.function = cx88_ir_work;
 201                 hrtimer_start(&ir->timer, ir->polling * 1000000,
 202                               HRTIMER_MODE_REL);
 203         }
 204         if (ir->sampling) {
 205                 core->pci_irqmask |= PCI_INT_IR_SMPINT;
 206                 cx_write(MO_DDS_IO, 0x33F286 * ir_samplerate); /* samplerate */
 207                 cx_write(MO_DDSCFG_IO, 0x5); /* enable */
 208         }
 209         return 0;
 210 }
 211
 212 static void __cx88_ir_stop(void *priv)
 213 {
 214         struct cx88_core *core = priv;
 215         struct cx88_IR *ir;
 216
 217         if (!core || !core->ir)
 218                 return;
 219
 220         ir = core->ir;
 221         if (ir->sampling) {
 222                 cx_write(MO_DDSCFG_IO, 0x0);
 223                 core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
 224         }
 225
 226         if (ir->polling)
 227                 hrtimer_cancel(&ir->timer);
 228 }
 229
 230 int cx88_ir_start(struct cx88_core *core)
 231 {
 232         if (core->ir->users)
 233                 return __cx88_ir_start(core);
 234
 235         return 0;
 236 }
 237 EXPORT_SYMBOL(cx88_ir_start);
 238
 239 void cx88_ir_stop(struct cx88_core *core)
 240 {
 241         if (core->ir->users)
 242                 __cx88_ir_stop(core);
 243 }
 244 EXPORT_SYMBOL(cx88_ir_stop);
 245
 246 static int cx88_ir_open(struct rc_dev *rc)
 247 {
 248         struct cx88_core *core = rc->priv;
 249
 250         core->ir->users++;
 251         return __cx88_ir_start(core);
 252 }
 253
 254 static void cx88_ir_close(struct rc_dev *rc)
 255 {
 256         struct cx88_core *core = rc->priv;
 257
 258         core->ir->users--;
 259         if (!core->ir->users)
 260                 __cx88_ir_stop(core);
 261 }
 262
 263 /* ---------------------------------------------------------------------- */
 264
 265 int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
 266 {
 267         struct cx88_IR *ir;
 268         struct rc_dev *dev;
 269         char *ir_codes = NULL;
 270         u64 rc_type = RC_BIT_OTHER;
 271         int err = -ENOMEM;
 272         u32 hardware_mask = 0;  /* For devices with a hardware mask, when
 273                                  * used with a full-code IR table
 274                                  */
 275
 276         ir = kzalloc(sizeof(*ir), GFP_KERNEL);
 277         dev = rc_allocate_device();
 278         if (!ir || !dev)
 279                 goto err_out_free;
 280
 281         ir->dev = dev;
 282
 283         /* detect & configure */
 284         switch (core->boardnr) {
 285         case CX88_BOARD_DNTV_LIVE_DVB_T:
 286         case CX88_BOARD_KWORLD_DVB_T:
 287         case CX88_BOARD_KWORLD_DVB_T_CX22702:
 288                 ir_codes = RC_MAP_DNTV_LIVE_DVB_T;
 289                 ir->gpio_addr = MO_GP1_IO;
 290                 ir->mask_keycode = 0x1f;
 291                 ir->mask_keyup = 0x60;
 292                 ir->polling = 50; /* ms */
 293                 break;
 294         case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
 295                 ir_codes = RC_MAP_CINERGY_1400;
 296                 ir->sampling = 0xeb04; /* address */
 297                 break;
 298         case CX88_BOARD_HAUPPAUGE:
 299         case CX88_BOARD_HAUPPAUGE_DVB_T1:
 300         case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 301         case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 302         case CX88_BOARD_HAUPPAUGE_HVR1100:
 303         case CX88_BOARD_HAUPPAUGE_HVR3000:
 304         case CX88_BOARD_HAUPPAUGE_HVR4000:
 305         case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
 306         case CX88_BOARD_PCHDTV_HD3000:
 307         case CX88_BOARD_PCHDTV_HD5500:
 308         case CX88_BOARD_HAUPPAUGE_IRONLY:
 309                 ir_codes = RC_MAP_HAUPPAUGE;
 310                 ir->sampling = 1;
 311                 break;
 312         case CX88_BOARD_WINFAST_DTV2000H:
 313         case CX88_BOARD_WINFAST_DTV2000H_J:
 314         case CX88_BOARD_WINFAST_DTV1800H:
 315         case CX88_BOARD_WINFAST_DTV1800H_XC4000:
 316         case CX88_BOARD_WINFAST_DTV2000H_PLUS:
 317                 ir_codes = RC_MAP_WINFAST;
 318                 ir->gpio_addr = MO_GP0_IO;
 319                 ir->mask_keycode = 0x8f8;
 320                 ir->mask_keyup = 0x100;
 321                 ir->polling = 50; /* ms */
 322                 break;
 323         case CX88_BOARD_WINFAST2000XP_EXPERT:
 324         case CX88_BOARD_WINFAST_DTV1000:
 325         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
 326         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36:
 327         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43:
 328                 ir_codes = RC_MAP_WINFAST;
 329                 ir->gpio_addr = MO_GP0_IO;
 330                 ir->mask_keycode = 0x8f8;
 331                 ir->mask_keyup = 0x100;
 332                 ir->polling = 1; /* ms */
 333                 break;
 334         case CX88_BOARD_IODATA_GVBCTV7E:
 335                 ir_codes = RC_MAP_IODATA_BCTV7E;
 336                 ir->gpio_addr = MO_GP0_IO;
 337                 ir->mask_keycode = 0xfd;
 338                 ir->mask_keydown = 0x02;
 339                 ir->polling = 5; /* ms */
 340                 break;
 341         case CX88_BOARD_PROLINK_PLAYTVPVR:
 342         case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
 343                 /*
 344                  * It seems that this hardware is paired with NEC extended
 345                  * address 0x866b. So, unfortunately, its usage with other
 346                  * IR's with different address won't work. Still, there are
 347                  * other IR's from the same manufacturer that works, like the
 348                  * 002-T mini RC, provided with newer PV hardware
 349                  */
 350                 ir_codes = RC_MAP_PIXELVIEW_MK12;
 351                 rc_type = RC_BIT_NECX;
 352                 ir->gpio_addr = MO_GP1_IO;
 353                 ir->mask_keyup = 0x80;
 354                 ir->polling = 10; /* ms */
 355                 hardware_mask = 0x3f;   /* Hardware returns only 6 bits from command part */
 356                 break;
 357         case CX88_BOARD_PROLINK_PV_8000GT:
 358         case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
 359                 ir_codes = RC_MAP_PIXELVIEW_NEW;
 360                 ir->gpio_addr = MO_GP1_IO;
 361                 ir->mask_keycode = 0x3f;
 362                 ir->mask_keyup = 0x80;
 363                 ir->polling = 1; /* ms */
 364                 break;
 365         case CX88_BOARD_KWORLD_LTV883:
 366                 ir_codes = RC_MAP_PIXELVIEW;
 367                 ir->gpio_addr = MO_GP1_IO;
 368                 ir->mask_keycode = 0x1f;
 369                 ir->mask_keyup = 0x60;
 370                 ir->polling = 1; /* ms */
 371                 break;
 372         case CX88_BOARD_ADSTECH_DVB_T_PCI:
 373                 ir_codes = RC_MAP_ADSTECH_DVB_T_PCI;
 374                 ir->gpio_addr = MO_GP1_IO;
 375                 ir->mask_keycode = 0xbf;
 376                 ir->mask_keyup = 0x40;
 377                 ir->polling = 50; /* ms */
 378                 break;
 379         case CX88_BOARD_MSI_TVANYWHERE_MASTER:
 380                 ir_codes = RC_MAP_MSI_TVANYWHERE;
 381                 ir->gpio_addr = MO_GP1_IO;
 382                 ir->mask_keycode = 0x1f;
 383                 ir->mask_keyup = 0x40;
 384                 ir->polling = 1; /* ms */
 385                 break;
 386         case CX88_BOARD_AVERTV_303:
 387         case CX88_BOARD_AVERTV_STUDIO_303:
 388                 ir_codes         = RC_MAP_AVERTV_303;
 389                 ir->gpio_addr    = MO_GP2_IO;
 390                 ir->mask_keycode = 0xfb;
 391                 ir->mask_keydown = 0x02;
 392                 ir->polling      = 50; /* ms */
 393                 break;
 394         case CX88_BOARD_OMICOM_SS4_PCI:
 395         case CX88_BOARD_SATTRADE_ST4200:
 396         case CX88_BOARD_TBS_8920:
 397         case CX88_BOARD_TBS_8910:
 398         case CX88_BOARD_PROF_7300:
 399         case CX88_BOARD_PROF_7301:
 400         case CX88_BOARD_PROF_6200:
 401                 ir_codes = RC_MAP_TBS_NEC;
 402                 ir->sampling = 0xff00; /* address */
 403                 break;
 404         case CX88_BOARD_TEVII_S464:
 405         case CX88_BOARD_TEVII_S460:
 406         case CX88_BOARD_TEVII_S420:
 407                 ir_codes = RC_MAP_TEVII_NEC;
 408                 ir->sampling = 0xff00; /* address */
 409                 break;
 410         case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
 411                 ir_codes         = RC_MAP_DNTV_LIVE_DVBT_PRO;
 412                 ir->sampling     = 0xff00; /* address */
 413                 break;
 414         case CX88_BOARD_NORWOOD_MICRO:
 415                 ir_codes         = RC_MAP_NORWOOD;
 416                 ir->gpio_addr    = MO_GP1_IO;
 417                 ir->mask_keycode = 0x0e;
 418                 ir->mask_keyup   = 0x80;
 419                 ir->polling      = 50; /* ms */
 420                 break;
 421         case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
 422                 ir_codes         = RC_MAP_NPGTECH;
 423                 ir->gpio_addr    = MO_GP0_IO;
 424                 ir->mask_keycode = 0xfa;
 425                 ir->polling      = 50; /* ms */
 426                 break;
 427         case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 428                 ir_codes         = RC_MAP_PINNACLE_PCTV_HD;
 429                 ir->sampling     = 1;
 430                 break;
 431         case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
 432                 ir_codes         = RC_MAP_POWERCOLOR_REAL_ANGEL;
 433                 ir->gpio_addr    = MO_GP2_IO;
 434                 ir->mask_keycode = 0x7e;
 435                 ir->polling      = 100; /* ms */
 436                 break;
 437         case CX88_BOARD_TWINHAN_VP1027_DVBS:
 438                 ir_codes         = RC_MAP_TWINHAN_VP1027_DVBS;
 439                 ir->sampling     = 0xff00; /* address */
 440                 break;
 441         }
 442
 443         if (!ir_codes) {
 444                 err = -ENODEV;
 445                 goto err_out_free;
 446         }
 447
 448         /*
 449          * The usage of mask_keycode were very convenient, due to several
 450          * reasons. Among others, the scancode tables were using the scancode
 451          * as the index elements. So, the less bits it was used, the smaller
 452          * the table were stored. After the input changes, the better is to use
 453          * the full scancodes, since it allows replacing the IR remote by
 454          * another one. Unfortunately, there are still some hardware, like
 455          * Pixelview Ultra Pro, where only part of the scancode is sent via
 456          * GPIO. So, there's no way to get the full scancode. Due to that,
 457          * hardware_mask were introduced here: it represents those hardware
 458          * that has such limits.
 459          */
 460         if (hardware_mask && !ir->mask_keycode)
 461                 ir->mask_keycode = hardware_mask;
 462
 463         /* init input device */
 464         snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
 465         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
 466
 467         dev->input_name = ir->name;
 468         dev->input_phys = ir->phys;
 469         dev->input_id.bustype = BUS_PCI;
 470         dev->input_id.version = 1;
 471         if (pci->subsystem_vendor) {
 472                 dev->input_id.vendor = pci->subsystem_vendor;
 473                 dev->input_id.product = pci->subsystem_device;
 474         } else {
 475                 dev->input_id.vendor = pci->vendor;
 476                 dev->input_id.product = pci->device;
 477         }
 478         dev->dev.parent = &pci->dev;
 479         dev->map_name = ir_codes;
 480         dev->driver_name = MODULE_NAME;
 481         dev->priv = core;
 482         dev->open = cx88_ir_open;
 483         dev->close = cx88_ir_close;
 484         dev->scancode_mask = hardware_mask;
 485
 486         if (ir->sampling) {
 487                 dev->driver_type = RC_DRIVER_IR_RAW;
 488                 dev->timeout = 10 * 1000 * 1000; /* 10 ms */
 489         } else {
 490                 dev->driver_type = RC_DRIVER_SCANCODE;
 491                 dev->allowed_protocols = rc_type;
 492         }
 493
 494         ir->core = core;
 495         core->ir = ir;
 496
 497         /* all done */
 498         err = rc_register_device(dev);
 499         if (err)
 500                 goto err_out_free;
 501
 502         return 0;
 503
 504 err_out_free:
 505         rc_free_device(dev);
 506         core->ir = NULL;
 507         kfree(ir);
 508         return err;
 509 }
 510
 511 int cx88_ir_fini(struct cx88_core *core)
 512 {
 513         struct cx88_IR *ir = core->ir;
 514
 515         /* skip detach on non attached boards */
 516         if (!ir)
 517                 return 0;
 518
 519         cx88_ir_stop(core);
 520         rc_unregister_device(ir->dev);
 521         kfree(ir);
 522
 523         /* done */
 524         core->ir = NULL;
 525         return 0;
 526 }
 527
 528 /* ---------------------------------------------------------------------- */
 529
 530 void cx88_ir_irq(struct cx88_core *core)
 531 {
 532         struct cx88_IR *ir = core->ir;
 533         u32 samples;
 534         unsigned int todo, bits;
 535         struct ir_raw_event ev;
 536
 537         if (!ir || !ir->sampling)
 538                 return;
 539
 540         /*
 541          * Samples are stored in a 32 bit register, oldest sample in
 542          * the msb. A set bit represents space and an unset bit
 543          * represents a pulse.
 544          */
 545         samples = cx_read(MO_SAMPLE_IO);
 546
 547         if (samples == 0xff && ir->dev->idle)
 548                 return;
 549
 550         init_ir_raw_event(&ev);
 551         for (todo = 32; todo > 0; todo -= bits) {
 552                 ev.pulse = samples & 0x80000000 ? false : true;
 553                 bits = min(todo, 32U - fls(ev.pulse ? samples : ~samples));
 554                 ev.duration = (bits * (NSEC_PER_SEC / 1000)) / ir_samplerate;
 555                 ir_raw_event_store_with_filter(ir->dev, &ev);
 556                 samples <<= bits;
 557         }
 558         ir_raw_event_handle(ir->dev);
 559 }
 560
 561 static int get_key_pvr2000(struct IR_i2c *ir, enum rc_type *protocol,
 562                            u32 *scancode, u8 *toggle)
 563 {
 564         int flags, code;
 565
 566         /* poll IR chip */
 567         flags = i2c_smbus_read_byte_data(ir->c, 0x10);
 568         if (flags < 0) {
 569                 dprintk("read error\n");
 570                 return 0;
 571         }
 572         /* key pressed ? */
 573         if (0 == (flags & 0x80))
 574                 return 0;
 575
 576         /* read actual key code */
 577         code = i2c_smbus_read_byte_data(ir->c, 0x00);
 578         if (code < 0) {
 579                 dprintk("read error\n");
 580                 return 0;
 581         }
 582
 583         dprintk("IR Key/Flags: (0x%02x/0x%02x)\n",
 584                 code & 0xff, flags & 0xff);
 585
 586         *protocol = RC_TYPE_UNKNOWN;
 587         *scancode = code & 0xff;
 588         *toggle = 0;
 589         return 1;
 590 }
 591
 592 void cx88_i2c_init_ir(struct cx88_core *core)
 593 {
 594         struct i2c_board_info info;
 595         const unsigned short default_addr_list[] = {
 596                 0x18, 0x6b, 0x71,
 597                 I2C_CLIENT_END
 598         };
 599         const unsigned short pvr2000_addr_list[] = {
 600                 0x18, 0x1a,
 601                 I2C_CLIENT_END
 602         };
 603         const unsigned short *addr_list = default_addr_list;
 604         const unsigned short *addrp;
 605         /* Instantiate the IR receiver device, if present */
 606         if (core->i2c_rc != 0)
 607                 return;
 608
 609         memset(&info, 0, sizeof(struct i2c_board_info));
 610         strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
 611
 612         switch (core->boardnr) {
 613         case CX88_BOARD_LEADTEK_PVR2000:
 614                 addr_list = pvr2000_addr_list;
 615                 core->init_data.name = "cx88 Leadtek PVR 2000 remote";
 616                 core->init_data.type = RC_BIT_UNKNOWN;
 617                 core->init_data.get_key = get_key_pvr2000;
 618                 core->init_data.ir_codes = RC_MAP_EMPTY;
 619                 break;
 620         }
 621
 622         /*
 623          * We can't call i2c_new_probed_device() because it uses
 624          * quick writes for probing and at least some RC receiver
 625          * devices only reply to reads.
 626          * Also, Hauppauge XVR needs to be specified, as address 0x71
 627          * conflicts with another remote type used with saa7134
 628          */
 629         for (addrp = addr_list; *addrp != I2C_CLIENT_END; addrp++) {
 630                 info.platform_data = NULL;
 631                 memset(&core->init_data, 0, sizeof(core->init_data));
 632
 633                 if (*addrp == 0x71) {
 634                         /* Hauppauge XVR */
 635                         core->init_data.name = "cx88 Hauppauge XVR remote";
 636                         core->init_data.ir_codes = RC_MAP_HAUPPAUGE;
 637                         core->init_data.type = RC_BIT_RC5 | RC_BIT_RC6_MCE |
 638                                                         RC_BIT_RC6_6A_32;
 639                         core->init_data.internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR;
 640
 641                         info.platform_data = &core->init_data;
 642                 }
 643                 if (i2c_smbus_xfer(&core->i2c_adap, *addrp, 0,
 644                                    I2C_SMBUS_READ, 0,
 645                                    I2C_SMBUS_QUICK, NULL) >= 0) {
 646                         info.addr = *addrp;
 647                         i2c_new_device(&core->i2c_adap, &info);
 648                         break;
 649                 }
 650         }
 651 }
 652
 653 /* ---------------------------------------------------------------------- */
 654
 655 MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
 656 MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
 657 MODULE_LICENSE("GPL");