drivers/media/video/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  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  23  */
  24
  25 #include <linux/init.h>
  26 #include <linux/hrtimer.h>
  27 #include <linux/pci.h>
  28 #include <linux/slab.h>
  29 #include <linux/module.h>
  30
  31 #include "cx88.h"
  32 #include <media/rc-core.h>
  33
  34 #define MODULE_NAME "cx88xx"
  35
  36 /* ---------------------------------------------------------------------- */
  37
  38 struct cx88_IR {
  39         struct cx88_core *core;
  40         struct rc_dev *dev;
  41
  42         int users;
  43
  44         char name[32];
  45         char phys[32];
  46
  47         /* sample from gpio pin 16 */
  48         u32 sampling;
  49
  50         /* poll external decoder */
  51         int polling;
  52         struct hrtimer timer;
  53         u32 gpio_addr;
  54         u32 last_gpio;
  55         u32 mask_keycode;
  56         u32 mask_keydown;
  57         u32 mask_keyup;
  58 };
  59
  60 static unsigned ir_samplerate = 4;
  61 module_param(ir_samplerate, uint, 0444);
  62 MODULE_PARM_DESC(ir_samplerate, "IR samplerate in kHz, 1 - 20, default 4");
  63
  64 static int ir_debug;
  65 module_param(ir_debug, int, 0644);      /* debug level [IR] */
  66 MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
  67
  68 #define ir_dprintk(fmt, arg...) if (ir_debug) \
  69         printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)
  70
  71 #define dprintk(fmt, arg...)    if (ir_debug) \
  72         printk(KERN_DEBUG "cx88 IR: " fmt , ##arg)
  73
  74 /* ---------------------------------------------------------------------- */
  75
  76 static void cx88_ir_handle_key(struct cx88_IR *ir)
  77 {
  78         struct cx88_core *core = ir->core;
  79         u32 gpio, data, auxgpio;
  80
  81         /* read gpio value */
  82         gpio = cx_read(ir->gpio_addr);
  83         switch (core->boardnr) {
  84         case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
  85                 /* This board apparently uses a combination of 2 GPIO
  86                    to represent the keys. Additionally, the second GPIO
  87                    can be used for parity.
  88
  89                    Example:
  90
  91                    for key "5"
  92                         gpio = 0x758, auxgpio = 0xe5 or 0xf5
  93                    for key "Power"
  94                         gpio = 0x758, auxgpio = 0xed or 0xfd
  95                  */
  96
  97                 auxgpio = cx_read(MO_GP1_IO);
  98                 /* Take out the parity part */
  99                 gpio=(gpio & 0x7fd) + (auxgpio & 0xef);
 100                 break;
 101         case CX88_BOARD_WINFAST_DTV1000:
 102         case CX88_BOARD_WINFAST_DTV1800H:
 103         case CX88_BOARD_WINFAST_DTV1800H_XC4000:
 104         case CX88_BOARD_WINFAST_DTV2000H_PLUS:
 105         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
 106                 gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900);
 107                 auxgpio = gpio;
 108                 break;
 109         default:
 110                 auxgpio = gpio;
 111         }
 112         if (ir->polling) {
 113                 if (ir->last_gpio == auxgpio)
 114                         return;
 115                 ir->last_gpio = auxgpio;
 116         }
 117
 118         /* extract data */
 119         data = ir_extract_bits(gpio, ir->mask_keycode);
 120         ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
 121                    gpio, data,
 122                    ir->polling ? "poll" : "irq",
 123                    (gpio & ir->mask_keydown) ? " down" : "",
 124                    (gpio & ir->mask_keyup) ? " up" : "");
 125
 126         if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) {
 127                 u32 gpio_key = cx_read(MO_GP0_IO);
 128
 129                 data = (data << 4) | ((gpio_key & 0xf0) >> 4);
 130
 131                 rc_keydown(ir->dev, data, 0);
 132
 133         } else if (ir->mask_keydown) {
 134                 /* bit set on keydown */
 135                 if (gpio & ir->mask_keydown)
 136                         rc_keydown_notimeout(ir->dev, data, 0);
 137                 else
 138                         rc_keyup(ir->dev);
 139
 140         } else if (ir->mask_keyup) {
 141                 /* bit cleared on keydown */
 142                 if (0 == (gpio & ir->mask_keyup))
 143                         rc_keydown_notimeout(ir->dev, data, 0);
 144                 else
 145                         rc_keyup(ir->dev);
 146
 147         } else {
 148                 /* can't distinguish keydown/up :-/ */
 149                 rc_keydown_notimeout(ir->dev, data, 0);
 150                 rc_keyup(ir->dev);
 151         }
 152 }
 153
 154 static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer)
 155 {
 156         unsigned long missed;
 157         struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer);
 158
 159         cx88_ir_handle_key(ir);
 160         missed = hrtimer_forward_now(&ir->timer,
 161                                      ktime_set(0, ir->polling * 1000000));
 162         if (missed > 1)
 163                 ir_dprintk("Missed ticks %ld\n", missed - 1);
 164
 165         return HRTIMER_RESTART;
 166 }
 167
 168 static int __cx88_ir_start(void *priv)
 169 {
 170         struct cx88_core *core = priv;
 171         struct cx88_IR *ir;
 172
 173         if (!core || !core->ir)
 174                 return -EINVAL;
 175
 176         ir = core->ir;
 177
 178         if (ir->polling) {
 179                 hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 180                 ir->timer.function = cx88_ir_work;
 181                 hrtimer_start(&ir->timer,
 182                               ktime_set(0, ir->polling * 1000000),
 183                               HRTIMER_MODE_REL);
 184         }
 185         if (ir->sampling) {
 186                 core->pci_irqmask |= PCI_INT_IR_SMPINT;
 187                 cx_write(MO_DDS_IO, 0x33F286 * ir_samplerate); /* samplerate */
 188                 cx_write(MO_DDSCFG_IO, 0x5); /* enable */
 189         }
 190         return 0;
 191 }
 192
 193 static void __cx88_ir_stop(void *priv)
 194 {
 195         struct cx88_core *core = priv;
 196         struct cx88_IR *ir;
 197
 198         if (!core || !core->ir)
 199                 return;
 200
 201         ir = core->ir;
 202         if (ir->sampling) {
 203                 cx_write(MO_DDSCFG_IO, 0x0);
 204                 core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
 205         }
 206
 207         if (ir->polling)
 208                 hrtimer_cancel(&ir->timer);
 209 }
 210
 211 int cx88_ir_start(struct cx88_core *core)
 212 {
 213         if (core->ir->users)
 214                 return __cx88_ir_start(core);
 215
 216         return 0;
 217 }
 218
 219 void cx88_ir_stop(struct cx88_core *core)
 220 {
 221         if (core->ir->users)
 222                 __cx88_ir_stop(core);
 223 }
 224
 225 static int cx88_ir_open(struct rc_dev *rc)
 226 {
 227         struct cx88_core *core = rc->priv;
 228
 229         core->ir->users++;
 230         return __cx88_ir_start(core);
 231 }
 232
 233 static void cx88_ir_close(struct rc_dev *rc)
 234 {
 235         struct cx88_core *core = rc->priv;
 236
 237         core->ir->users--;
 238         if (!core->ir->users)
 239                 __cx88_ir_stop(core);
 240 }
 241
 242 /* ---------------------------------------------------------------------- */
 243
 244 int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
 245 {
 246         struct cx88_IR *ir;
 247         struct rc_dev *dev;
 248         char *ir_codes = NULL;
 249         u64 rc_type = RC_TYPE_OTHER;
 250         int err = -ENOMEM;
 251         u32 hardware_mask = 0;  /* For devices with a hardware mask, when
 252                                  * used with a full-code IR table
 253                                  */
 254
 255         ir = kzalloc(sizeof(*ir), GFP_KERNEL);
 256         dev = rc_allocate_device();
 257         if (!ir || !dev)
 258                 goto err_out_free;
 259
 260         ir->dev = dev;
 261
 262         /* detect & configure */
 263         switch (core->boardnr) {
 264         case CX88_BOARD_DNTV_LIVE_DVB_T:
 265         case CX88_BOARD_KWORLD_DVB_T:
 266         case CX88_BOARD_KWORLD_DVB_T_CX22702:
 267                 ir_codes = RC_MAP_DNTV_LIVE_DVB_T;
 268                 ir->gpio_addr = MO_GP1_IO;
 269                 ir->mask_keycode = 0x1f;
 270                 ir->mask_keyup = 0x60;
 271                 ir->polling = 50; /* ms */
 272                 break;
 273         case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
 274                 ir_codes = RC_MAP_CINERGY_1400;
 275                 ir->sampling = 0xeb04; /* address */
 276                 break;
 277         case CX88_BOARD_HAUPPAUGE:
 278         case CX88_BOARD_HAUPPAUGE_DVB_T1:
 279         case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 280         case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 281         case CX88_BOARD_HAUPPAUGE_HVR1100:
 282         case CX88_BOARD_HAUPPAUGE_HVR3000:
 283         case CX88_BOARD_HAUPPAUGE_HVR4000:
 284         case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
 285         case CX88_BOARD_PCHDTV_HD3000:
 286         case CX88_BOARD_PCHDTV_HD5500:
 287         case CX88_BOARD_HAUPPAUGE_IRONLY:
 288                 ir_codes = RC_MAP_HAUPPAUGE;
 289                 ir->sampling = 1;
 290                 break;
 291         case CX88_BOARD_WINFAST_DTV2000H:
 292         case CX88_BOARD_WINFAST_DTV2000H_J:
 293         case CX88_BOARD_WINFAST_DTV1800H:
 294         case CX88_BOARD_WINFAST_DTV1800H_XC4000:
 295         case CX88_BOARD_WINFAST_DTV2000H_PLUS:
 296                 ir_codes = RC_MAP_WINFAST;
 297                 ir->gpio_addr = MO_GP0_IO;
 298                 ir->mask_keycode = 0x8f8;
 299                 ir->mask_keyup = 0x100;
 300                 ir->polling = 50; /* ms */
 301                 break;
 302         case CX88_BOARD_WINFAST2000XP_EXPERT:
 303         case CX88_BOARD_WINFAST_DTV1000:
 304         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
 305                 ir_codes = RC_MAP_WINFAST;
 306                 ir->gpio_addr = MO_GP0_IO;
 307                 ir->mask_keycode = 0x8f8;
 308                 ir->mask_keyup = 0x100;
 309                 ir->polling = 1; /* ms */
 310                 break;
 311         case CX88_BOARD_IODATA_GVBCTV7E:
 312                 ir_codes = RC_MAP_IODATA_BCTV7E;
 313                 ir->gpio_addr = MO_GP0_IO;
 314                 ir->mask_keycode = 0xfd;
 315                 ir->mask_keydown = 0x02;
 316                 ir->polling = 5; /* ms */
 317                 break;
 318         case CX88_BOARD_PROLINK_PLAYTVPVR:
 319         case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
 320                 /*
 321                  * It seems that this hardware is paired with NEC extended
 322                  * address 0x866b. So, unfortunately, its usage with other
 323                  * IR's with different address won't work. Still, there are
 324                  * other IR's from the same manufacturer that works, like the
 325                  * 002-T mini RC, provided with newer PV hardware
 326                  */
 327                 ir_codes = RC_MAP_PIXELVIEW_MK12;
 328                 ir->gpio_addr = MO_GP1_IO;
 329                 ir->mask_keyup = 0x80;
 330                 ir->polling = 10; /* ms */
 331                 hardware_mask = 0x3f;   /* Hardware returns only 6 bits from command part */
 332                 break;
 333         case CX88_BOARD_PROLINK_PV_8000GT:
 334         case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
 335                 ir_codes = RC_MAP_PIXELVIEW_NEW;
 336                 ir->gpio_addr = MO_GP1_IO;
 337                 ir->mask_keycode = 0x3f;
 338                 ir->mask_keyup = 0x80;
 339                 ir->polling = 1; /* ms */
 340                 break;
 341         case CX88_BOARD_KWORLD_LTV883:
 342                 ir_codes = RC_MAP_PIXELVIEW;
 343                 ir->gpio_addr = MO_GP1_IO;
 344                 ir->mask_keycode = 0x1f;
 345                 ir->mask_keyup = 0x60;
 346                 ir->polling = 1; /* ms */
 347                 break;
 348         case CX88_BOARD_ADSTECH_DVB_T_PCI:
 349                 ir_codes = RC_MAP_ADSTECH_DVB_T_PCI;
 350                 ir->gpio_addr = MO_GP1_IO;
 351                 ir->mask_keycode = 0xbf;
 352                 ir->mask_keyup = 0x40;
 353                 ir->polling = 50; /* ms */
 354                 break;
 355         case CX88_BOARD_MSI_TVANYWHERE_MASTER:
 356                 ir_codes = RC_MAP_MSI_TVANYWHERE;
 357                 ir->gpio_addr = MO_GP1_IO;
 358                 ir->mask_keycode = 0x1f;
 359                 ir->mask_keyup = 0x40;
 360                 ir->polling = 1; /* ms */
 361                 break;
 362         case CX88_BOARD_AVERTV_303:
 363         case CX88_BOARD_AVERTV_STUDIO_303:
 364                 ir_codes         = RC_MAP_AVERTV_303;
 365                 ir->gpio_addr    = MO_GP2_IO;
 366                 ir->mask_keycode = 0xfb;
 367                 ir->mask_keydown = 0x02;
 368                 ir->polling      = 50; /* ms */
 369                 break;
 370         case CX88_BOARD_OMICOM_SS4_PCI:
 371         case CX88_BOARD_SATTRADE_ST4200:
 372         case CX88_BOARD_TBS_8920:
 373         case CX88_BOARD_TBS_8910:
 374         case CX88_BOARD_PROF_7300:
 375         case CX88_BOARD_PROF_7301:
 376         case CX88_BOARD_PROF_6200:
 377                 ir_codes = RC_MAP_TBS_NEC;
 378                 ir->sampling = 0xff00; /* address */
 379                 break;
 380         case CX88_BOARD_TEVII_S464:
 381         case CX88_BOARD_TEVII_S460:
 382         case CX88_BOARD_TEVII_S420:
 383                 ir_codes = RC_MAP_TEVII_NEC;
 384                 ir->sampling = 0xff00; /* address */
 385                 break;
 386         case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
 387                 ir_codes         = RC_MAP_DNTV_LIVE_DVBT_PRO;
 388                 ir->sampling     = 0xff00; /* address */
 389                 break;
 390         case CX88_BOARD_NORWOOD_MICRO:
 391                 ir_codes         = RC_MAP_NORWOOD;
 392                 ir->gpio_addr    = MO_GP1_IO;
 393                 ir->mask_keycode = 0x0e;
 394                 ir->mask_keyup   = 0x80;
 395                 ir->polling      = 50; /* ms */
 396                 break;
 397         case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
 398                 ir_codes         = RC_MAP_NPGTECH;
 399                 ir->gpio_addr    = MO_GP0_IO;
 400                 ir->mask_keycode = 0xfa;
 401                 ir->polling      = 50; /* ms */
 402                 break;
 403         case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 404                 ir_codes         = RC_MAP_PINNACLE_PCTV_HD;
 405                 ir->sampling     = 1;
 406                 break;
 407         case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
 408                 ir_codes         = RC_MAP_POWERCOLOR_REAL_ANGEL;
 409                 ir->gpio_addr    = MO_GP2_IO;
 410                 ir->mask_keycode = 0x7e;
 411                 ir->polling      = 100; /* ms */
 412                 break;
 413         case CX88_BOARD_TWINHAN_VP1027_DVBS:
 414                 ir_codes         = RC_MAP_TWINHAN_VP1027_DVBS;
 415                 rc_type          = RC_TYPE_NEC;
 416                 ir->sampling     = 0xff00; /* address */
 417                 break;
 418         }
 419
 420         if (!ir_codes) {
 421                 err = -ENODEV;
 422                 goto err_out_free;
 423         }
 424
 425         /*
 426          * The usage of mask_keycode were very convenient, due to several
 427          * reasons. Among others, the scancode tables were using the scancode
 428          * as the index elements. So, the less bits it was used, the smaller
 429          * the table were stored. After the input changes, the better is to use
 430          * the full scancodes, since it allows replacing the IR remote by
 431          * another one. Unfortunately, there are still some hardware, like
 432          * Pixelview Ultra Pro, where only part of the scancode is sent via
 433          * GPIO. So, there's no way to get the full scancode. Due to that,
 434          * hardware_mask were introduced here: it represents those hardware
 435          * that has such limits.
 436          */
 437         if (hardware_mask && !ir->mask_keycode)
 438                 ir->mask_keycode = hardware_mask;
 439
 440         /* init input device */
 441         snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
 442         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
 443
 444         dev->input_name = ir->name;
 445         dev->input_phys = ir->phys;
 446         dev->input_id.bustype = BUS_PCI;
 447         dev->input_id.version = 1;
 448         if (pci->subsystem_vendor) {
 449                 dev->input_id.vendor = pci->subsystem_vendor;
 450                 dev->input_id.product = pci->subsystem_device;
 451         } else {
 452                 dev->input_id.vendor = pci->vendor;
 453                 dev->input_id.product = pci->device;
 454         }
 455         dev->dev.parent = &pci->dev;
 456         dev->map_name = ir_codes;
 457         dev->driver_name = MODULE_NAME;
 458         dev->priv = core;
 459         dev->open = cx88_ir_open;
 460         dev->close = cx88_ir_close;
 461         dev->scanmask = hardware_mask;
 462
 463         if (ir->sampling) {
 464                 dev->driver_type = RC_DRIVER_IR_RAW;
 465                 dev->timeout = 10 * 1000 * 1000; /* 10 ms */
 466         } else {
 467                 dev->driver_type = RC_DRIVER_SCANCODE;
 468                 dev->allowed_protos = rc_type;
 469         }
 470
 471         ir->core = core;
 472         core->ir = ir;
 473
 474         /* all done */
 475         err = rc_register_device(dev);
 476         if (err)
 477                 goto err_out_free;
 478
 479         return 0;
 480
 481 err_out_free:
 482         rc_free_device(dev);
 483         core->ir = NULL;
 484         kfree(ir);
 485         return err;
 486 }
 487
 488 int cx88_ir_fini(struct cx88_core *core)
 489 {
 490         struct cx88_IR *ir = core->ir;
 491
 492         /* skip detach on non attached boards */
 493         if (NULL == ir)
 494                 return 0;
 495
 496         cx88_ir_stop(core);
 497         rc_unregister_device(ir->dev);
 498         kfree(ir);
 499
 500         /* done */
 501         core->ir = NULL;
 502         return 0;
 503 }
 504
 505 /* ---------------------------------------------------------------------- */
 506
 507 void cx88_ir_irq(struct cx88_core *core)
 508 {
 509         struct cx88_IR *ir = core->ir;
 510         u32 samples;
 511         unsigned todo, bits;
 512         struct ir_raw_event ev;
 513
 514         if (!ir || !ir->sampling)
 515                 return;
 516
 517         /*
 518          * Samples are stored in a 32 bit register, oldest sample in
 519          * the msb. A set bit represents space and an unset bit
 520          * represents a pulse.
 521          */
 522         samples = cx_read(MO_SAMPLE_IO);
 523
 524         if (samples == 0xff && ir->dev->idle)
 525                 return;
 526
 527         init_ir_raw_event(&ev);
 528         for (todo = 32; todo > 0; todo -= bits) {
 529                 ev.pulse = samples & 0x80000000 ? false : true;
 530                 bits = min(todo, 32U - fls(ev.pulse ? samples : ~samples));
 531                 ev.duration = (bits * (NSEC_PER_SEC / 1000)) / ir_samplerate;
 532                 ir_raw_event_store_with_filter(ir->dev, &ev);
 533                 samples <<= bits;
 534         }
 535         ir_raw_event_handle(ir->dev);
 536 }
 537
 538 static int get_key_pvr2000(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 539 {
 540         int flags, code;
 541
 542         /* poll IR chip */
 543         flags = i2c_smbus_read_byte_data(ir->c, 0x10);
 544         if (flags < 0) {
 545                 dprintk("read error\n");
 546                 return 0;
 547         }
 548         /* key pressed ? */
 549         if (0 == (flags & 0x80))
 550                 return 0;
 551
 552         /* read actual key code */
 553         code = i2c_smbus_read_byte_data(ir->c, 0x00);
 554         if (code < 0) {
 555                 dprintk("read error\n");
 556                 return 0;
 557         }
 558
 559         dprintk("IR Key/Flags: (0x%02x/0x%02x)\n",
 560                    code & 0xff, flags & 0xff);
 561
 562         *ir_key = code & 0xff;
 563         *ir_raw = code;
 564         return 1;
 565 }
 566
 567 void cx88_i2c_init_ir(struct cx88_core *core)
 568 {
 569         struct i2c_board_info info;
 570         const unsigned short default_addr_list[] = {
 571                 0x18, 0x6b, 0x71,
 572                 I2C_CLIENT_END
 573         };
 574         const unsigned short pvr2000_addr_list[] = {
 575                 0x18, 0x1a,
 576                 I2C_CLIENT_END
 577         };
 578         const unsigned short *addr_list = default_addr_list;
 579         const unsigned short *addrp;
 580         /* Instantiate the IR receiver device, if present */
 581         if (0 != core->i2c_rc)
 582                 return;
 583
 584         memset(&info, 0, sizeof(struct i2c_board_info));
 585         strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
 586
 587         switch (core->boardnr) {
 588         case CX88_BOARD_LEADTEK_PVR2000:
 589                 addr_list = pvr2000_addr_list;
 590                 core->init_data.name = "cx88 Leadtek PVR 2000 remote";
 591                 core->init_data.type = RC_TYPE_UNKNOWN;
 592                 core->init_data.get_key = get_key_pvr2000;
 593                 core->init_data.ir_codes = RC_MAP_EMPTY;
 594                 break;
 595         }
 596
 597         /*
 598          * We can't call i2c_new_probed_device() because it uses
 599          * quick writes for probing and at least some RC receiver
 600          * devices only reply to reads.
 601          * Also, Hauppauge XVR needs to be specified, as address 0x71
 602          * conflicts with another remote type used with saa7134
 603          */
 604         for (addrp = addr_list; *addrp != I2C_CLIENT_END; addrp++) {
 605                 info.platform_data = NULL;
 606                 memset(&core->init_data, 0, sizeof(core->init_data));
 607
 608                 if (*addrp == 0x71) {
 609                         /* Hauppauge XVR */
 610                         core->init_data.name = "cx88 Hauppauge XVR remote";
 611                         core->init_data.ir_codes = RC_MAP_HAUPPAUGE;
 612                         core->init_data.type = RC_TYPE_RC5;
 613                         core->init_data.internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR;
 614
 615                         info.platform_data = &core->init_data;
 616                 }
 617                 if (i2c_smbus_xfer(&core->i2c_adap, *addrp, 0,
 618                                         I2C_SMBUS_READ, 0,
 619                                         I2C_SMBUS_QUICK, NULL) >= 0) {
 620                         info.addr = *addrp;
 621                         i2c_new_device(&core->i2c_adap, &info);
 622                         break;
 623                 }
 624         }
 625 }
 626
 627 /* ---------------------------------------------------------------------- */
 628
 629 MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
 630 MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
 631 MODULE_LICENSE("GPL");