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 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/delay.h>
  27 #include <linux/input.h>
  28 #include <linux/pci.h>
  29 #include <linux/module.h>
  30 #include <linux/moduleparam.h>
  31
  32 #include <media/ir-common.h>
  33
  34 #include "cx88.h"
  35
  36 /* ---------------------------------------------------------------------- */
  37
  38 /* DigitalNow DNTV Live DVB-T Remote */
  39 static IR_KEYTAB_TYPE ir_codes_dntv_live_dvb_t[IR_KEYTAB_SIZE] = {
  40         [0x00] = KEY_ESC,               /* 'go up a level?' */
  41         /* Keys 0 to 9 */
  42         [0x0a] = KEY_KP0,
  43         [0x01] = KEY_KP1,
  44         [0x02] = KEY_KP2,
  45         [0x03] = KEY_KP3,
  46         [0x04] = KEY_KP4,
  47         [0x05] = KEY_KP5,
  48         [0x06] = KEY_KP6,
  49         [0x07] = KEY_KP7,
  50         [0x08] = KEY_KP8,
  51         [0x09] = KEY_KP9,
  52
  53         [0x0b] = KEY_TUNER,             /* tv/fm */
  54         [0x0c] = KEY_SEARCH,            /* scan */
  55         [0x0d] = KEY_STOP,
  56         [0x0e] = KEY_PAUSE,
  57         [0x0f] = KEY_LIST,              /* source */
  58
  59         [0x10] = KEY_MUTE,
  60         [0x11] = KEY_REWIND,            /* backward << */
  61         [0x12] = KEY_POWER,
  62         [0x13] = KEY_S,                 /* snap */
  63         [0x14] = KEY_AUDIO,             /* stereo */
  64         [0x15] = KEY_CLEAR,             /* reset */
  65         [0x16] = KEY_PLAY,
  66         [0x17] = KEY_ENTER,
  67         [0x18] = KEY_ZOOM,              /* full screen */
  68         [0x19] = KEY_FASTFORWARD,       /* forward >> */
  69         [0x1a] = KEY_CHANNELUP,
  70         [0x1b] = KEY_VOLUMEUP,
  71         [0x1c] = KEY_INFO,              /* preview */
  72         [0x1d] = KEY_RECORD,            /* record */
  73         [0x1e] = KEY_CHANNELDOWN,
  74         [0x1f] = KEY_VOLUMEDOWN,
  75 };
  76
  77 /* ---------------------------------------------------------------------- */
  78
  79 /* IO-DATA BCTV7E Remote */
  80 static IR_KEYTAB_TYPE ir_codes_iodata_bctv7e[IR_KEYTAB_SIZE] = {
  81         [0x40] = KEY_TV,
  82         [0x20] = KEY_RADIO,             /* FM */
  83         [0x60] = KEY_EPG,
  84         [0x00] = KEY_POWER,
  85
  86         /* Keys 0 to 9 */
  87         [0x44] = KEY_KP0,               /* 10 */
  88         [0x50] = KEY_KP1,
  89         [0x30] = KEY_KP2,
  90         [0x70] = KEY_KP3,
  91         [0x48] = KEY_KP4,
  92         [0x28] = KEY_KP5,
  93         [0x68] = KEY_KP6,
  94         [0x58] = KEY_KP7,
  95         [0x38] = KEY_KP8,
  96         [0x78] = KEY_KP9,
  97
  98         [0x10] = KEY_L,                 /* Live */
  99         [0x08] = KEY_T,                 /* Time Shift */
 100
 101         [0x18] = KEY_PLAYPAUSE,         /* Play */
 102
 103         [0x24] = KEY_ENTER,             /* 11 */
 104         [0x64] = KEY_ESC,               /* 12 */
 105         [0x04] = KEY_M,                 /* Multi */
 106
 107         [0x54] = KEY_VIDEO,
 108         [0x34] = KEY_CHANNELUP,
 109         [0x74] = KEY_VOLUMEUP,
 110         [0x14] = KEY_MUTE,
 111
 112         [0x4c] = KEY_S,                 /* SVIDEO */
 113         [0x2c] = KEY_CHANNELDOWN,
 114         [0x6c] = KEY_VOLUMEDOWN,
 115         [0x0c] = KEY_ZOOM,
 116
 117         [0x5c] = KEY_PAUSE,
 118         [0x3c] = KEY_C,                 /* || (red) */
 119         [0x7c] = KEY_RECORD,            /* recording */
 120         [0x1c] = KEY_STOP,
 121
 122         [0x41] = KEY_REWIND,            /* backward << */
 123         [0x21] = KEY_PLAY,
 124         [0x61] = KEY_FASTFORWARD,       /* forward >> */
 125         [0x01] = KEY_NEXT,              /* skip >| */
 126 };
 127
 128 /* ---------------------------------------------------------------------- */
 129
 130 /* ADS Tech Instant TV DVB-T PCI Remote */
 131 static IR_KEYTAB_TYPE ir_codes_adstech_dvb_t_pci[IR_KEYTAB_SIZE] = {
 132         /* Keys 0 to 9 */
 133         [0x4d] = KEY_0,
 134         [0x57] = KEY_1,
 135         [0x4f] = KEY_2,
 136         [0x53] = KEY_3,
 137         [0x56] = KEY_4,
 138         [0x4e] = KEY_5,
 139         [0x5e] = KEY_6,
 140         [0x54] = KEY_7,
 141         [0x4c] = KEY_8,
 142         [0x5c] = KEY_9,
 143
 144         [0x5b] = KEY_POWER,
 145         [0x5f] = KEY_MUTE,
 146         [0x55] = KEY_GOTO,
 147         [0x5d] = KEY_SEARCH,
 148         [0x17] = KEY_EPG,               /* Guide */
 149         [0x1f] = KEY_MENU,
 150         [0x0f] = KEY_UP,
 151         [0x46] = KEY_DOWN,
 152         [0x16] = KEY_LEFT,
 153         [0x1e] = KEY_RIGHT,
 154         [0x0e] = KEY_SELECT,            /* Enter */
 155         [0x5a] = KEY_INFO,
 156         [0x52] = KEY_EXIT,
 157         [0x59] = KEY_PREVIOUS,
 158         [0x51] = KEY_NEXT,
 159         [0x58] = KEY_REWIND,
 160         [0x50] = KEY_FORWARD,
 161         [0x44] = KEY_PLAYPAUSE,
 162         [0x07] = KEY_STOP,
 163         [0x1b] = KEY_RECORD,
 164         [0x13] = KEY_TUNER,             /* Live */
 165         [0x0a] = KEY_A,
 166         [0x12] = KEY_B,
 167         [0x03] = KEY_PROG1,             /* 1 */
 168         [0x01] = KEY_PROG2,             /* 2 */
 169         [0x00] = KEY_PROG3,             /* 3 */
 170         [0x06] = KEY_DVD,
 171         [0x48] = KEY_AUX,               /* Photo */
 172         [0x40] = KEY_VIDEO,
 173         [0x19] = KEY_AUDIO,             /* Music */
 174         [0x0b] = KEY_CHANNELUP,
 175         [0x08] = KEY_CHANNELDOWN,
 176         [0x15] = KEY_VOLUMEUP,
 177         [0x1c] = KEY_VOLUMEDOWN,
 178 };
 179
 180 /* ---------------------------------------------------------------------- */
 181
 182 /* MSI TV@nywhere remote */
 183 static IR_KEYTAB_TYPE ir_codes_msi_tvanywhere[IR_KEYTAB_SIZE] = {
 184         /* Keys 0 to 9 */
 185         [0x00] = KEY_0,
 186         [0x01] = KEY_1,
 187         [0x02] = KEY_2,
 188         [0x03] = KEY_3,
 189         [0x04] = KEY_4,
 190         [0x05] = KEY_5,
 191         [0x06] = KEY_6,
 192         [0x07] = KEY_7,
 193         [0x08] = KEY_8,
 194         [0x09] = KEY_9,
 195
 196         [0x0c] = KEY_MUTE,
 197         [0x0f] = KEY_SCREEN,            /* Full Screen */
 198         [0x10] = KEY_F,                 /* Funtion */
 199         [0x11] = KEY_T,                 /* Time shift */
 200         [0x12] = KEY_POWER,
 201         [0x13] = KEY_MEDIA,             /* MTS */
 202         [0x14] = KEY_SLOW,
 203         [0x16] = KEY_REWIND,            /* backward << */
 204         [0x17] = KEY_ENTER,             /* Return */
 205         [0x18] = KEY_FASTFORWARD,       /* forward >> */
 206         [0x1a] = KEY_CHANNELUP,
 207         [0x1b] = KEY_VOLUMEUP,
 208         [0x1e] = KEY_CHANNELDOWN,
 209         [0x1f] = KEY_VOLUMEDOWN,
 210 };
 211
 212 /* ---------------------------------------------------------------------- */
 213
 214 /* Cinergy 1400 DVB-T */
 215 static IR_KEYTAB_TYPE ir_codes_cinergy_1400[IR_KEYTAB_SIZE] = {
 216         [0x01] = KEY_POWER,
 217         [0x02] = KEY_1,
 218         [0x03] = KEY_2,
 219         [0x04] = KEY_3,
 220         [0x05] = KEY_4,
 221         [0x06] = KEY_5,
 222         [0x07] = KEY_6,
 223         [0x08] = KEY_7,
 224         [0x09] = KEY_8,
 225         [0x0a] = KEY_9,
 226         [0x0c] = KEY_0,
 227
 228         [0x0b] = KEY_VIDEO,
 229         [0x0d] = KEY_REFRESH,
 230         [0x0e] = KEY_SELECT,
 231         [0x0f] = KEY_EPG,
 232         [0x10] = KEY_UP,
 233         [0x11] = KEY_LEFT,
 234         [0x12] = KEY_OK,
 235         [0x13] = KEY_RIGHT,
 236         [0x14] = KEY_DOWN,
 237         [0x15] = KEY_TEXT,
 238         [0x16] = KEY_INFO,
 239
 240         [0x17] = KEY_RED,
 241         [0x18] = KEY_GREEN,
 242         [0x19] = KEY_YELLOW,
 243         [0x1a] = KEY_BLUE,
 244
 245         [0x1b] = KEY_CHANNELUP,
 246         [0x1c] = KEY_VOLUMEUP,
 247         [0x1d] = KEY_MUTE,
 248         [0x1e] = KEY_VOLUMEDOWN,
 249         [0x1f] = KEY_CHANNELDOWN,
 250
 251         [0x40] = KEY_PAUSE,
 252         [0x4c] = KEY_PLAY,
 253         [0x58] = KEY_RECORD,
 254         [0x54] = KEY_PREVIOUS,
 255         [0x48] = KEY_STOP,
 256         [0x5c] = KEY_NEXT,
 257 };
 258
 259 /* ---------------------------------------------------------------------- */
 260
 261 struct cx88_IR {
 262         struct cx88_core *core;
 263         struct input_dev input;
 264         struct ir_input_state ir;
 265         char name[32];
 266         char phys[32];
 267
 268         /* sample from gpio pin 16 */
 269         int sampling;
 270         u32 samples[16];
 271         int scount;
 272         unsigned long release;
 273
 274         /* poll external decoder */
 275         int polling;
 276         struct work_struct work;
 277         struct timer_list timer;
 278         u32 gpio_addr;
 279         u32 last_gpio;
 280         u32 mask_keycode;
 281         u32 mask_keydown;
 282         u32 mask_keyup;
 283 };
 284
 285 static int ir_debug = 0;
 286 module_param(ir_debug, int, 0644);      /* debug level [IR] */
 287 MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
 288
 289 #define ir_dprintk(fmt, arg...) if (ir_debug) \
 290         printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)
 291
 292 /* ---------------------------------------------------------------------- */
 293
 294 static void cx88_ir_handle_key(struct cx88_IR *ir)
 295 {
 296         struct cx88_core *core = ir->core;
 297         u32 gpio, data;
 298
 299         /* read gpio value */
 300         gpio = cx_read(ir->gpio_addr);
 301         if (ir->polling) {
 302                 if (ir->last_gpio == gpio)
 303                         return;
 304                 ir->last_gpio = gpio;
 305         }
 306
 307         /* extract data */
 308         data = ir_extract_bits(gpio, ir->mask_keycode);
 309         ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
 310                    gpio, data,
 311                    ir->polling ? "poll" : "irq",
 312                    (gpio & ir->mask_keydown) ? " down" : "",
 313                    (gpio & ir->mask_keyup) ? " up" : "");
 314
 315         if (ir->mask_keydown) {
 316                 /* bit set on keydown */
 317                 if (gpio & ir->mask_keydown) {
 318                         ir_input_keydown(&ir->input, &ir->ir, data, data);
 319                 } else {
 320                         ir_input_nokey(&ir->input, &ir->ir);
 321                 }
 322
 323         } else if (ir->mask_keyup) {
 324                 /* bit cleared on keydown */
 325                 if (0 == (gpio & ir->mask_keyup)) {
 326                         ir_input_keydown(&ir->input, &ir->ir, data, data);
 327                 } else {
 328                         ir_input_nokey(&ir->input, &ir->ir);
 329                 }
 330
 331         } else {
 332                 /* can't distinguish keydown/up :-/ */
 333                 ir_input_keydown(&ir->input, &ir->ir, data, data);
 334                 ir_input_nokey(&ir->input, &ir->ir);
 335         }
 336 }
 337
 338 static void ir_timer(unsigned long data)
 339 {
 340         struct cx88_IR *ir = (struct cx88_IR *)data;
 341
 342         schedule_work(&ir->work);
 343 }
 344
 345 static void cx88_ir_work(void *data)
 346 {
 347         struct cx88_IR *ir = data;
 348         unsigned long timeout;
 349
 350         cx88_ir_handle_key(ir);
 351         timeout = jiffies + (ir->polling * HZ / 1000);
 352         mod_timer(&ir->timer, timeout);
 353 }
 354
 355 /* ---------------------------------------------------------------------- */
 356
 357 int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
 358 {
 359         struct cx88_IR *ir;
 360         IR_KEYTAB_TYPE *ir_codes = NULL;
 361         int ir_type = IR_TYPE_OTHER;
 362
 363         ir = kmalloc(sizeof(*ir), GFP_KERNEL);
 364         if (NULL == ir)
 365                 return -ENOMEM;
 366         memset(ir, 0, sizeof(*ir));
 367
 368         /* detect & configure */
 369         switch (core->board) {
 370         case CX88_BOARD_DNTV_LIVE_DVB_T:
 371         case CX88_BOARD_KWORLD_DVB_T:
 372                 ir_codes = ir_codes_dntv_live_dvb_t;
 373                 ir->gpio_addr = MO_GP1_IO;
 374                 ir->mask_keycode = 0x1f;
 375                 ir->mask_keyup = 0x60;
 376                 ir->polling = 50; /* ms */
 377                 break;
 378         case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
 379                 ir_codes = ir_codes_cinergy_1400;
 380                 ir_type = IR_TYPE_PD;
 381                 ir->sampling = 1;
 382                 break;
 383         case CX88_BOARD_HAUPPAUGE:
 384         case CX88_BOARD_HAUPPAUGE_DVB_T1:
 385                 ir_codes = ir_codes_hauppauge_new;
 386                 ir_type = IR_TYPE_RC5;
 387                 ir->sampling = 1;
 388                 break;
 389         case CX88_BOARD_WINFAST2000XP_EXPERT:
 390                 ir_codes = ir_codes_winfast;
 391                 ir->gpio_addr = MO_GP0_IO;
 392                 ir->mask_keycode = 0x8f8;
 393                 ir->mask_keyup = 0x100;
 394                 ir->polling = 1; /* ms */
 395                 break;
 396         case CX88_BOARD_IODATA_GVBCTV7E:
 397                 ir_codes = ir_codes_iodata_bctv7e;
 398                 ir->gpio_addr = MO_GP0_IO;
 399                 ir->mask_keycode = 0xfd;
 400                 ir->mask_keydown = 0x02;
 401                 ir->polling = 5; /* ms */
 402                 break;
 403         case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
 404                 ir_codes = ir_codes_pixelview;
 405                 ir->gpio_addr = MO_GP1_IO;
 406                 ir->mask_keycode = 0x1f;
 407                 ir->mask_keyup = 0x80;
 408                 ir->polling = 1; /* ms */
 409                 break;
 410         case CX88_BOARD_ADSTECH_DVB_T_PCI:
 411                 ir_codes = ir_codes_adstech_dvb_t_pci;
 412                 ir->gpio_addr = MO_GP1_IO;
 413                 ir->mask_keycode = 0xbf;
 414                 ir->mask_keyup = 0x40;
 415                 ir->polling = 50; /* ms */
 416                 break;
 417         case CX88_BOARD_MSI_TVANYWHERE_MASTER:
 418                 ir_codes = ir_codes_msi_tvanywhere;
 419                 ir->gpio_addr = MO_GP1_IO;
 420                 ir->mask_keycode = 0x1f;
 421                 ir->mask_keyup = 0x40;
 422                 ir->polling = 1; /* ms */
 423                 break;
 424         }
 425
 426         if (NULL == ir_codes) {
 427                 kfree(ir);
 428                 return -ENODEV;
 429         }
 430
 431         /* init input device */
 432         snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)",
 433                  cx88_boards[core->board].name);
 434         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
 435
 436         ir_input_init(&ir->input, &ir->ir, ir_type, ir_codes);
 437         ir->input.name = ir->name;
 438         ir->input.phys = ir->phys;
 439         ir->input.id.bustype = BUS_PCI;
 440         ir->input.id.version = 1;
 441         if (pci->subsystem_vendor) {
 442                 ir->input.id.vendor = pci->subsystem_vendor;
 443                 ir->input.id.product = pci->subsystem_device;
 444         } else {
 445                 ir->input.id.vendor = pci->vendor;
 446                 ir->input.id.product = pci->device;
 447         }
 448         ir->input.dev = &pci->dev;
 449
 450         /* record handles to ourself */
 451         ir->core = core;
 452         core->ir = ir;
 453
 454         if (ir->polling) {
 455                 INIT_WORK(&ir->work, cx88_ir_work, ir);
 456                 init_timer(&ir->timer);
 457                 ir->timer.function = ir_timer;
 458                 ir->timer.data = (unsigned long)ir;
 459                 schedule_work(&ir->work);
 460         }
 461         if (ir->sampling) {
 462                 core->pci_irqmask |= (1 << 18); /* IR_SMP_INT */
 463                 cx_write(MO_DDS_IO, 0xa80a80);  /* 4 kHz sample rate */
 464                 cx_write(MO_DDSCFG_IO, 0x5);    /* enable */
 465         }
 466
 467         /* all done */
 468         input_register_device(&ir->input);
 469         printk("%s: registered IR remote control\n", core->name);
 470
 471         return 0;
 472 }
 473
 474 int cx88_ir_fini(struct cx88_core *core)
 475 {
 476         struct cx88_IR *ir = core->ir;
 477
 478         /* skip detach on non attached boards */
 479         if (NULL == ir)
 480                 return 0;
 481
 482         if (ir->polling) {
 483                 del_timer(&ir->timer);
 484                 flush_scheduled_work();
 485         }
 486
 487         input_unregister_device(&ir->input);
 488         kfree(ir);
 489
 490         /* done */
 491         core->ir = NULL;
 492         return 0;
 493 }
 494
 495 /* ---------------------------------------------------------------------- */
 496
 497 void cx88_ir_irq(struct cx88_core *core)
 498 {
 499         struct cx88_IR *ir = core->ir;
 500         u32 samples, ircode;
 501         int i;
 502
 503         if (NULL == ir)
 504                 return;
 505         if (!ir->sampling)
 506                 return;
 507
 508         samples = cx_read(MO_SAMPLE_IO);
 509         if (0 != samples && 0xffffffff != samples) {
 510                 /* record sample data */
 511                 if (ir->scount < ARRAY_SIZE(ir->samples))
 512                         ir->samples[ir->scount++] = samples;
 513                 return;
 514         }
 515         if (!ir->scount) {
 516                 /* nothing to sample */
 517                 if (ir->ir.keypressed && time_after(jiffies, ir->release))
 518                         ir_input_nokey(&ir->input, &ir->ir);
 519                 return;
 520         }
 521
 522         /* have a complete sample */
 523         if (ir->scount < ARRAY_SIZE(ir->samples))
 524                 ir->samples[ir->scount++] = samples;
 525         for (i = 0; i < ir->scount; i++)
 526                 ir->samples[i] = ~ir->samples[i];
 527         if (ir_debug)
 528                 ir_dump_samples(ir->samples, ir->scount);
 529
 530         /* decode it */
 531         switch (core->board) {
 532         case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
 533                 ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4);
 534
 535                 if (ircode == 0xffffffff) { /* decoding error */
 536                         ir_dprintk("pulse distance decoding error\n");
 537                         break;
 538                 }
 539
 540                 ir_dprintk("pulse distance decoded: %x\n", ircode);
 541
 542                 if (ircode == 0) { /* key still pressed */
 543                         ir_dprintk("pulse distance decoded repeat code\n");
 544                         ir->release = jiffies + msecs_to_jiffies(120);
 545                         break;
 546                 }
 547
 548                 if ((ircode & 0xffff) != 0xeb04) { /* wrong address */
 549                         ir_dprintk("pulse distance decoded wrong address\n");
 550                         break;
 551                 }
 552
 553                 if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */
 554                         ir_dprintk("pulse distance decoded wrong check sum\n");
 555                         break;
 556                 }
 557
 558                 ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f);
 559
 560                 ir_input_keydown(&ir->input, &ir->ir, (ircode >> 16) & 0x7f, (ircode >> 16) & 0xff);
 561                 ir->release = jiffies + msecs_to_jiffies(120);
 562                 break;
 563         case CX88_BOARD_HAUPPAUGE:
 564         case CX88_BOARD_HAUPPAUGE_DVB_T1:
 565                 ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
 566                 ir_dprintk("biphase decoded: %x\n", ircode);
 567                 if ((ircode & 0xfffff000) != 0x3000)
 568                         break;
 569                 ir_input_keydown(&ir->input, &ir->ir, ircode & 0x3f, ircode);
 570                 ir->release = jiffies + msecs_to_jiffies(120);
 571                 break;
 572         }
 573
 574         ir->scount = 0;
 575         return;
 576 }
 577
 578 /* ---------------------------------------------------------------------- */
 579
 580 MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
 581 MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
 582 MODULE_LICENSE("GPL");
 583
 584 /*
 585  * Local variables:
 586  * c-basic-offset: 8
 587  * End:
 588  */