linux/drivers/media/pci/cx88/cx88-input.c
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   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
  35struct 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
  57static unsigned int ir_samplerate = 4;
  58module_param(ir_samplerate, uint, 0444);
  59MODULE_PARM_DESC(ir_samplerate, "IR samplerate in kHz, 1 - 20, default 4");
  60
  61static int ir_debug;
  62module_param(ir_debug, int, 0644);      /* debug level [IR] */
  63MODULE_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
  77static 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
 177static 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
 190static 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
 214static 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
 232int cx88_ir_start(struct cx88_core *core)
 233{
 234        if (core->ir->users)
 235                return __cx88_ir_start(core);
 236
 237        return 0;
 238}
 239EXPORT_SYMBOL(cx88_ir_start);
 240
 241void cx88_ir_stop(struct cx88_core *core)
 242{
 243        if (core->ir->users)
 244                __cx88_ir_stop(core);
 245}
 246EXPORT_SYMBOL(cx88_ir_stop);
 247
 248static 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
 256static 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
 267int 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
 505err_out_free:
 506        rc_free_device(dev);
 507        core->ir = NULL;
 508        kfree(ir);
 509        return err;
 510}
 511
 512int 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
 531void 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
 562static 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
 593void cx88_i2c_init_ir(struct cx88_core *core)
 594{
 595        struct i2c_board_info info;
 596        static const unsigned short default_addr_list[] = {
 597                0x18, 0x6b, 0x71,
 598                I2C_CLIENT_END
 599        };
 600        static 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
 656MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
 657MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
 658MODULE_LICENSE("GPL");
 659