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  * 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         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36:
 107         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43:
 108                 gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900);
 109                 auxgpio = gpio;
 110                 break;
 111         default:
 112                 auxgpio = gpio;
 113         }
 114         if (ir->polling) {
 115                 if (ir->last_gpio == auxgpio)
 116                         return;
 117                 ir->last_gpio = auxgpio;
 118         }
 119
 120         /* extract data */
 121         data = ir_extract_bits(gpio, ir->mask_keycode);
 122         ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
 123                    gpio, data,
 124                    ir->polling ? "poll" : "irq",
 125                    (gpio & ir->mask_keydown) ? " down" : "",
 126                    (gpio & ir->mask_keyup) ? " up" : "");
 127
 128         if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) {
 129                 u32 gpio_key = cx_read(MO_GP0_IO);
 130
 131                 data = (data << 4) | ((gpio_key & 0xf0) >> 4);
 132
 133                 rc_keydown(ir->dev, RC_TYPE_UNKNOWN, data, 0);
 134
 135         } else if (ir->core->boardnr == CX88_BOARD_PROLINK_PLAYTVPVR ||
 136                    ir->core->boardnr == CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO) {
 137                 /* bit cleared on keydown, NEC scancode, 0xAAAACC, A = 0x866b */
 138                 u16 addr;
 139                 u8 cmd;
 140                 u32 scancode;
 141
 142                 addr = (data >> 8) & 0xffff;
 143                 cmd  = (data >> 0) & 0x00ff;
 144                 scancode = RC_SCANCODE_NECX(addr, cmd);
 145
 146                 if (0 == (gpio & ir->mask_keyup))
 147                         rc_keydown_notimeout(ir->dev, RC_TYPE_NEC, scancode, 0);
 148                 else
 149                         rc_keyup(ir->dev);
 150
 151         } else if (ir->mask_keydown) {
 152                 /* bit set on keydown */
 153                 if (gpio & ir->mask_keydown)
 154                         rc_keydown_notimeout(ir->dev, RC_TYPE_UNKNOWN, data, 0);
 155                 else
 156                         rc_keyup(ir->dev);
 157
 158         } else if (ir->mask_keyup) {
 159                 /* bit cleared on keydown */
 160                 if (0 == (gpio & ir->mask_keyup))
 161                         rc_keydown_notimeout(ir->dev, RC_TYPE_UNKNOWN, data, 0);
 162                 else
 163                         rc_keyup(ir->dev);
 164
 165         } else {
 166                 /* can't distinguish keydown/up :-/ */
 167                 rc_keydown_notimeout(ir->dev, RC_TYPE_UNKNOWN, data, 0);
 168                 rc_keyup(ir->dev);
 169         }
 170 }
 171
 172 static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer)
 173 {
 174         unsigned long missed;
 175         struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer);
 176
 177         cx88_ir_handle_key(ir);
 178         missed = hrtimer_forward_now(&ir->timer,
 179                                      ktime_set(0, ir->polling * 1000000));
 180         if (missed > 1)
 181                 ir_dprintk("Missed ticks %ld\n", missed - 1);
 182
 183         return HRTIMER_RESTART;
 184 }
 185
 186 static int __cx88_ir_start(void *priv)
 187 {
 188         struct cx88_core *core = priv;
 189         struct cx88_IR *ir;
 190
 191         if (!core || !core->ir)
 192                 return -EINVAL;
 193
 194         ir = core->ir;
 195
 196         if (ir->polling) {
 197                 hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 198                 ir->timer.function = cx88_ir_work;
 199                 hrtimer_start(&ir->timer,
 200                               ktime_set(0, ir->polling * 1000000),
 201                               HRTIMER_MODE_REL);
 202         }
 203         if (ir->sampling) {
 204                 core->pci_irqmask |= PCI_INT_IR_SMPINT;
 205                 cx_write(MO_DDS_IO, 0x33F286 * ir_samplerate); /* samplerate */
 206                 cx_write(MO_DDSCFG_IO, 0x5); /* enable */
 207         }
 208         return 0;
 209 }
 210
 211 static void __cx88_ir_stop(void *priv)
 212 {
 213         struct cx88_core *core = priv;
 214         struct cx88_IR *ir;
 215
 216         if (!core || !core->ir)
 217                 return;
 218
 219         ir = core->ir;
 220         if (ir->sampling) {
 221                 cx_write(MO_DDSCFG_IO, 0x0);
 222                 core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
 223         }
 224
 225         if (ir->polling)
 226                 hrtimer_cancel(&ir->timer);
 227 }
 228
 229 int cx88_ir_start(struct cx88_core *core)
 230 {
 231         if (core->ir->users)
 232                 return __cx88_ir_start(core);
 233
 234         return 0;
 235 }
 236
 237 void cx88_ir_stop(struct cx88_core *core)
 238 {
 239         if (core->ir->users)
 240                 __cx88_ir_stop(core);
 241 }
 242
 243 static int cx88_ir_open(struct rc_dev *rc)
 244 {
 245         struct cx88_core *core = rc->priv;
 246
 247         core->ir->users++;
 248         return __cx88_ir_start(core);
 249 }
 250
 251 static void cx88_ir_close(struct rc_dev *rc)
 252 {
 253         struct cx88_core *core = rc->priv;
 254
 255         core->ir->users--;
 256         if (!core->ir->users)
 257                 __cx88_ir_stop(core);
 258 }
 259
 260 /* ---------------------------------------------------------------------- */
 261
 262 int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
 263 {
 264         struct cx88_IR *ir;
 265         struct rc_dev *dev;
 266         char *ir_codes = NULL;
 267         u64 rc_type = RC_BIT_OTHER;
 268         int err = -ENOMEM;
 269         u32 hardware_mask = 0;  /* For devices with a hardware mask, when
 270                                  * used with a full-code IR table
 271                                  */
 272
 273         ir = kzalloc(sizeof(*ir), GFP_KERNEL);
 274         dev = rc_allocate_device();
 275         if (!ir || !dev)
 276                 goto err_out_free;
 277
 278         ir->dev = dev;
 279
 280         /* detect & configure */
 281         switch (core->boardnr) {
 282         case CX88_BOARD_DNTV_LIVE_DVB_T:
 283         case CX88_BOARD_KWORLD_DVB_T:
 284         case CX88_BOARD_KWORLD_DVB_T_CX22702:
 285                 ir_codes = RC_MAP_DNTV_LIVE_DVB_T;
 286                 ir->gpio_addr = MO_GP1_IO;
 287                 ir->mask_keycode = 0x1f;
 288                 ir->mask_keyup = 0x60;
 289                 ir->polling = 50; /* ms */
 290                 break;
 291         case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
 292                 ir_codes = RC_MAP_CINERGY_1400;
 293                 ir->sampling = 0xeb04; /* address */
 294                 break;
 295         case CX88_BOARD_HAUPPAUGE:
 296         case CX88_BOARD_HAUPPAUGE_DVB_T1:
 297         case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 298         case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 299         case CX88_BOARD_HAUPPAUGE_HVR1100:
 300         case CX88_BOARD_HAUPPAUGE_HVR3000:
 301         case CX88_BOARD_HAUPPAUGE_HVR4000:
 302         case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
 303         case CX88_BOARD_PCHDTV_HD3000:
 304         case CX88_BOARD_PCHDTV_HD5500:
 305         case CX88_BOARD_HAUPPAUGE_IRONLY:
 306                 ir_codes = RC_MAP_HAUPPAUGE;
 307                 ir->sampling = 1;
 308                 break;
 309         case CX88_BOARD_WINFAST_DTV2000H:
 310         case CX88_BOARD_WINFAST_DTV2000H_J:
 311         case CX88_BOARD_WINFAST_DTV1800H:
 312         case CX88_BOARD_WINFAST_DTV1800H_XC4000:
 313         case CX88_BOARD_WINFAST_DTV2000H_PLUS:
 314                 ir_codes = RC_MAP_WINFAST;
 315                 ir->gpio_addr = MO_GP0_IO;
 316                 ir->mask_keycode = 0x8f8;
 317                 ir->mask_keyup = 0x100;
 318                 ir->polling = 50; /* ms */
 319                 break;
 320         case CX88_BOARD_WINFAST2000XP_EXPERT:
 321         case CX88_BOARD_WINFAST_DTV1000:
 322         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
 323         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36:
 324         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43:
 325                 ir_codes = RC_MAP_WINFAST;
 326                 ir->gpio_addr = MO_GP0_IO;
 327                 ir->mask_keycode = 0x8f8;
 328                 ir->mask_keyup = 0x100;
 329                 ir->polling = 1; /* ms */
 330                 break;
 331         case CX88_BOARD_IODATA_GVBCTV7E:
 332                 ir_codes = RC_MAP_IODATA_BCTV7E;
 333                 ir->gpio_addr = MO_GP0_IO;
 334                 ir->mask_keycode = 0xfd;
 335                 ir->mask_keydown = 0x02;
 336                 ir->polling = 5; /* ms */
 337                 break;
 338         case CX88_BOARD_PROLINK_PLAYTVPVR:
 339         case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
 340                 /*
 341                  * It seems that this hardware is paired with NEC extended
 342                  * address 0x866b. So, unfortunately, its usage with other
 343                  * IR's with different address won't work. Still, there are
 344                  * other IR's from the same manufacturer that works, like the
 345                  * 002-T mini RC, provided with newer PV hardware
 346                  */
 347                 ir_codes = RC_MAP_PIXELVIEW_MK12;
 348                 rc_type = RC_BIT_NEC;
 349                 ir->gpio_addr = MO_GP1_IO;
 350                 ir->mask_keyup = 0x80;
 351                 ir->polling = 10; /* ms */
 352                 hardware_mask = 0x3f;   /* Hardware returns only 6 bits from command part */
 353                 break;
 354         case CX88_BOARD_PROLINK_PV_8000GT:
 355         case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
 356                 ir_codes = RC_MAP_PIXELVIEW_NEW;
 357                 ir->gpio_addr = MO_GP1_IO;
 358                 ir->mask_keycode = 0x3f;
 359                 ir->mask_keyup = 0x80;
 360                 ir->polling = 1; /* ms */
 361                 break;
 362         case CX88_BOARD_KWORLD_LTV883:
 363                 ir_codes = RC_MAP_PIXELVIEW;
 364                 ir->gpio_addr = MO_GP1_IO;
 365                 ir->mask_keycode = 0x1f;
 366                 ir->mask_keyup = 0x60;
 367                 ir->polling = 1; /* ms */
 368                 break;
 369         case CX88_BOARD_ADSTECH_DVB_T_PCI:
 370                 ir_codes = RC_MAP_ADSTECH_DVB_T_PCI;
 371                 ir->gpio_addr = MO_GP1_IO;
 372                 ir->mask_keycode = 0xbf;
 373                 ir->mask_keyup = 0x40;
 374                 ir->polling = 50; /* ms */
 375                 break;
 376         case CX88_BOARD_MSI_TVANYWHERE_MASTER:
 377                 ir_codes = RC_MAP_MSI_TVANYWHERE;
 378                 ir->gpio_addr = MO_GP1_IO;
 379                 ir->mask_keycode = 0x1f;
 380                 ir->mask_keyup = 0x40;
 381                 ir->polling = 1; /* ms */
 382                 break;
 383         case CX88_BOARD_AVERTV_303:
 384         case CX88_BOARD_AVERTV_STUDIO_303:
 385                 ir_codes         = RC_MAP_AVERTV_303;
 386                 ir->gpio_addr    = MO_GP2_IO;
 387                 ir->mask_keycode = 0xfb;
 388                 ir->mask_keydown = 0x02;
 389                 ir->polling      = 50; /* ms */
 390                 break;
 391         case CX88_BOARD_OMICOM_SS4_PCI:
 392         case CX88_BOARD_SATTRADE_ST4200:
 393         case CX88_BOARD_TBS_8920:
 394         case CX88_BOARD_TBS_8910:
 395         case CX88_BOARD_PROF_7300:
 396         case CX88_BOARD_PROF_7301:
 397         case CX88_BOARD_PROF_6200:
 398                 ir_codes = RC_MAP_TBS_NEC;
 399                 ir->sampling = 0xff00; /* address */
 400                 break;
 401         case CX88_BOARD_TEVII_S464:
 402         case CX88_BOARD_TEVII_S460:
 403         case CX88_BOARD_TEVII_S420:
 404                 ir_codes = RC_MAP_TEVII_NEC;
 405                 ir->sampling = 0xff00; /* address */
 406                 break;
 407         case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
 408                 ir_codes         = RC_MAP_DNTV_LIVE_DVBT_PRO;
 409                 ir->sampling     = 0xff00; /* address */
 410                 break;
 411         case CX88_BOARD_NORWOOD_MICRO:
 412                 ir_codes         = RC_MAP_NORWOOD;
 413                 ir->gpio_addr    = MO_GP1_IO;
 414                 ir->mask_keycode = 0x0e;
 415                 ir->mask_keyup   = 0x80;
 416                 ir->polling      = 50; /* ms */
 417                 break;
 418         case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
 419                 ir_codes         = RC_MAP_NPGTECH;
 420                 ir->gpio_addr    = MO_GP0_IO;
 421                 ir->mask_keycode = 0xfa;
 422                 ir->polling      = 50; /* ms */
 423                 break;
 424         case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 425                 ir_codes         = RC_MAP_PINNACLE_PCTV_HD;
 426                 ir->sampling     = 1;
 427                 break;
 428         case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
 429                 ir_codes         = RC_MAP_POWERCOLOR_REAL_ANGEL;
 430                 ir->gpio_addr    = MO_GP2_IO;
 431                 ir->mask_keycode = 0x7e;
 432                 ir->polling      = 100; /* ms */
 433                 break;
 434         case CX88_BOARD_TWINHAN_VP1027_DVBS:
 435                 ir_codes         = RC_MAP_TWINHAN_VP1027_DVBS;
 436                 ir->sampling     = 0xff00; /* address */
 437                 break;
 438         }
 439
 440         if (!ir_codes) {
 441                 err = -ENODEV;
 442                 goto err_out_free;
 443         }
 444
 445         /*
 446          * The usage of mask_keycode were very convenient, due to several
 447          * reasons. Among others, the scancode tables were using the scancode
 448          * as the index elements. So, the less bits it was used, the smaller
 449          * the table were stored. After the input changes, the better is to use
 450          * the full scancodes, since it allows replacing the IR remote by
 451          * another one. Unfortunately, there are still some hardware, like
 452          * Pixelview Ultra Pro, where only part of the scancode is sent via
 453          * GPIO. So, there's no way to get the full scancode. Due to that,
 454          * hardware_mask were introduced here: it represents those hardware
 455          * that has such limits.
 456          */
 457         if (hardware_mask && !ir->mask_keycode)
 458                 ir->mask_keycode = hardware_mask;
 459
 460         /* init input device */
 461         snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
 462         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
 463
 464         dev->input_name = ir->name;
 465         dev->input_phys = ir->phys;
 466         dev->input_id.bustype = BUS_PCI;
 467         dev->input_id.version = 1;
 468         if (pci->subsystem_vendor) {
 469                 dev->input_id.vendor = pci->subsystem_vendor;
 470                 dev->input_id.product = pci->subsystem_device;
 471         } else {
 472                 dev->input_id.vendor = pci->vendor;
 473                 dev->input_id.product = pci->device;
 474         }
 475         dev->dev.parent = &pci->dev;
 476         dev->map_name = ir_codes;
 477         dev->driver_name = MODULE_NAME;
 478         dev->priv = core;
 479         dev->open = cx88_ir_open;
 480         dev->close = cx88_ir_close;
 481         dev->scancode_mask = hardware_mask;
 482
 483         if (ir->sampling) {
 484                 dev->driver_type = RC_DRIVER_IR_RAW;
 485                 dev->timeout = 10 * 1000 * 1000; /* 10 ms */
 486         } else {
 487                 dev->driver_type = RC_DRIVER_SCANCODE;
 488                 dev->allowed_protocols = rc_type;
 489         }
 490
 491         ir->core = core;
 492         core->ir = ir;
 493
 494         /* all done */
 495         err = rc_register_device(dev);
 496         if (err)
 497                 goto err_out_free;
 498
 499         return 0;
 500
 501 err_out_free:
 502         rc_free_device(dev);
 503         core->ir = NULL;
 504         kfree(ir);
 505         return err;
 506 }
 507
 508 int cx88_ir_fini(struct cx88_core *core)
 509 {
 510         struct cx88_IR *ir = core->ir;
 511
 512         /* skip detach on non attached boards */
 513         if (NULL == ir)
 514                 return 0;
 515
 516         cx88_ir_stop(core);
 517         rc_unregister_device(ir->dev);
 518         kfree(ir);
 519
 520         /* done */
 521         core->ir = NULL;
 522         return 0;
 523 }
 524
 525 /* ---------------------------------------------------------------------- */
 526
 527 void cx88_ir_irq(struct cx88_core *core)
 528 {
 529         struct cx88_IR *ir = core->ir;
 530         u32 samples;
 531         unsigned todo, bits;
 532         struct ir_raw_event ev;
 533
 534         if (!ir || !ir->sampling)
 535                 return;
 536
 537         /*
 538          * Samples are stored in a 32 bit register, oldest sample in
 539          * the msb. A set bit represents space and an unset bit
 540          * represents a pulse.
 541          */
 542         samples = cx_read(MO_SAMPLE_IO);
 543
 544         if (samples == 0xff && ir->dev->idle)
 545                 return;
 546
 547         init_ir_raw_event(&ev);
 548         for (todo = 32; todo > 0; todo -= bits) {
 549                 ev.pulse = samples & 0x80000000 ? false : true;
 550                 bits = min(todo, 32U - fls(ev.pulse ? samples : ~samples));
 551                 ev.duration = (bits * (NSEC_PER_SEC / 1000)) / ir_samplerate;
 552                 ir_raw_event_store_with_filter(ir->dev, &ev);
 553                 samples <<= bits;
 554         }
 555         ir_raw_event_handle(ir->dev);
 556 }
 557
 558 static int get_key_pvr2000(struct IR_i2c *ir, enum rc_type *protocol,
 559                            u32 *scancode, u8 *toggle)
 560 {
 561         int flags, code;
 562
 563         /* poll IR chip */
 564         flags = i2c_smbus_read_byte_data(ir->c, 0x10);
 565         if (flags < 0) {
 566                 dprintk("read error\n");
 567                 return 0;
 568         }
 569         /* key pressed ? */
 570         if (0 == (flags & 0x80))
 571                 return 0;
 572
 573         /* read actual key code */
 574         code = i2c_smbus_read_byte_data(ir->c, 0x00);
 575         if (code < 0) {
 576                 dprintk("read error\n");
 577                 return 0;
 578         }
 579
 580         dprintk("IR Key/Flags: (0x%02x/0x%02x)\n",
 581                    code & 0xff, flags & 0xff);
 582
 583         *protocol = RC_TYPE_UNKNOWN;
 584         *scancode = code & 0xff;
 585         *toggle = 0;
 586         return 1;
 587 }
 588
 589 void cx88_i2c_init_ir(struct cx88_core *core)
 590 {
 591         struct i2c_board_info info;
 592         const unsigned short default_addr_list[] = {
 593                 0x18, 0x6b, 0x71,
 594                 I2C_CLIENT_END
 595         };
 596         const unsigned short pvr2000_addr_list[] = {
 597                 0x18, 0x1a,
 598                 I2C_CLIENT_END
 599         };
 600         const unsigned short *addr_list = default_addr_list;
 601         const unsigned short *addrp;
 602         /* Instantiate the IR receiver device, if present */
 603         if (0 != core->i2c_rc)
 604                 return;
 605
 606         memset(&info, 0, sizeof(struct i2c_board_info));
 607         strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
 608
 609         switch (core->boardnr) {
 610         case CX88_BOARD_LEADTEK_PVR2000:
 611                 addr_list = pvr2000_addr_list;
 612                 core->init_data.name = "cx88 Leadtek PVR 2000 remote";
 613                 core->init_data.type = RC_BIT_UNKNOWN;
 614                 core->init_data.get_key = get_key_pvr2000;
 615                 core->init_data.ir_codes = RC_MAP_EMPTY;
 616                 break;
 617         }
 618
 619         /*
 620          * We can't call i2c_new_probed_device() because it uses
 621          * quick writes for probing and at least some RC receiver
 622          * devices only reply to reads.
 623          * Also, Hauppauge XVR needs to be specified, as address 0x71
 624          * conflicts with another remote type used with saa7134
 625          */
 626         for (addrp = addr_list; *addrp != I2C_CLIENT_END; addrp++) {
 627                 info.platform_data = NULL;
 628                 memset(&core->init_data, 0, sizeof(core->init_data));
 629
 630                 if (*addrp == 0x71) {
 631                         /* Hauppauge XVR */
 632                         core->init_data.name = "cx88 Hauppauge XVR remote";
 633                         core->init_data.ir_codes = RC_MAP_HAUPPAUGE;
 634                         core->init_data.type = RC_BIT_RC5;
 635                         core->init_data.internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR;
 636
 637                         info.platform_data = &core->init_data;
 638                 }
 639                 if (i2c_smbus_xfer(&core->i2c_adap, *addrp, 0,
 640                                         I2C_SMBUS_READ, 0,
 641                                         I2C_SMBUS_QUICK, NULL) >= 0) {
 642                         info.addr = *addrp;
 643                         i2c_new_device(&core->i2c_adap, &info);
 644                         break;
 645                 }
 646         }
 647 }
 648
 649 /* ---------------------------------------------------------------------- */
 650
 651 MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
 652 MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
 653 MODULE_LICENSE("GPL");