drivers/media/video/cx88/cx88-input.c

   1 /*
   2  * $Id: cx88-input.c,v 1.15 2005/07/07 13:58:38 mchehab Exp $
   3  *
   4  * Device driver for GPIO attached remote control interfaces
   5  * on Conexant 2388x based TV/DVB cards.
   6  *
   7  * Copyright (c) 2003 Pavel Machek
   8  * Copyright (c) 2004 Gerd Knorr
   9  * Copyright (c) 2004 Chris Pascoe
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  24  */
  25
  26 #include <linux/init.h>
  27 #include <linux/delay.h>
  28 #include <linux/input.h>
  29 #include <linux/pci.h>
  30 #include <linux/module.h>
  31 #include <linux/moduleparam.h>
  32
  33 #include <media/ir-common.h>
  34
  35 #include "cx88.h"
  36
  37 /* ---------------------------------------------------------------------- */
  38
  39 /* DigitalNow DNTV Live DVB-T Remote */
  40 static IR_KEYTAB_TYPE ir_codes_dntv_live_dvb_t[IR_KEYTAB_SIZE] = {
  41         [0x00] = KEY_ESC,               /* 'go up a level?' */
  42         /* Keys 0 to 9 */
  43         [0x0a] = KEY_KP0,
  44         [0x01] = KEY_KP1,
  45         [0x02] = KEY_KP2,
  46         [0x03] = KEY_KP3,
  47         [0x04] = KEY_KP4,
  48         [0x05] = KEY_KP5,
  49         [0x06] = KEY_KP6,
  50         [0x07] = KEY_KP7,
  51         [0x08] = KEY_KP8,
  52         [0x09] = KEY_KP9,
  53
  54         [0x0b] = KEY_TUNER,             /* tv/fm */
  55         [0x0c] = KEY_SEARCH,            /* scan */
  56         [0x0d] = KEY_STOP,
  57         [0x0e] = KEY_PAUSE,
  58         [0x0f] = KEY_LIST,              /* source */
  59
  60         [0x10] = KEY_MUTE,
  61         [0x11] = KEY_REWIND,            /* backward << */
  62         [0x12] = KEY_POWER,
  63         [0x13] = KEY_S,                 /* snap */
  64         [0x14] = KEY_AUDIO,             /* stereo */
  65         [0x15] = KEY_CLEAR,             /* reset */
  66         [0x16] = KEY_PLAY,
  67         [0x17] = KEY_ENTER,
  68         [0x18] = KEY_ZOOM,              /* full screen */
  69         [0x19] = KEY_FASTFORWARD,       /* forward >> */
  70         [0x1a] = KEY_CHANNELUP,
  71         [0x1b] = KEY_VOLUMEUP,
  72         [0x1c] = KEY_INFO,              /* preview */
  73         [0x1d] = KEY_RECORD,            /* record */
  74         [0x1e] = KEY_CHANNELDOWN,
  75         [0x1f] = KEY_VOLUMEDOWN,
  76 };
  77
  78 /* ---------------------------------------------------------------------- */
  79
  80 /* IO-DATA BCTV7E Remote */
  81 static IR_KEYTAB_TYPE ir_codes_iodata_bctv7e[IR_KEYTAB_SIZE] = {
  82         [0x40] = KEY_TV,
  83         [0x20] = KEY_RADIO,             /* FM */
  84         [0x60] = KEY_EPG,
  85         [0x00] = KEY_POWER,
  86
  87         /* Keys 0 to 9 */
  88         [0x44] = KEY_KP0,               /* 10 */
  89         [0x50] = KEY_KP1,
  90         [0x30] = KEY_KP2,
  91         [0x70] = KEY_KP3,
  92         [0x48] = KEY_KP4,
  93         [0x28] = KEY_KP5,
  94         [0x68] = KEY_KP6,
  95         [0x58] = KEY_KP7,
  96         [0x38] = KEY_KP8,
  97         [0x78] = KEY_KP9,
  98
  99         [0x10] = KEY_L,                 /* Live */
 100         [0x08] = KEY_T,                 /* Time Shift */
 101
 102         [0x18] = KEY_PLAYPAUSE,         /* Play */
 103
 104         [0x24] = KEY_ENTER,             /* 11 */
 105         [0x64] = KEY_ESC,               /* 12 */
 106         [0x04] = KEY_M,                 /* Multi */
 107
 108         [0x54] = KEY_VIDEO,
 109         [0x34] = KEY_CHANNELUP,
 110         [0x74] = KEY_VOLUMEUP,
 111         [0x14] = KEY_MUTE,
 112
 113         [0x4c] = KEY_S,                 /* SVIDEO */
 114         [0x2c] = KEY_CHANNELDOWN,
 115         [0x6c] = KEY_VOLUMEDOWN,
 116         [0x0c] = KEY_ZOOM,
 117
 118         [0x5c] = KEY_PAUSE,
 119         [0x3c] = KEY_C,                 /* || (red) */
 120         [0x7c] = KEY_RECORD,            /* recording */
 121         [0x1c] = KEY_STOP,
 122
 123         [0x41] = KEY_REWIND,            /* backward << */
 124         [0x21] = KEY_PLAY,
 125         [0x61] = KEY_FASTFORWARD,       /* forward >> */
 126         [0x01] = KEY_NEXT,              /* skip >| */
 127 };
 128
 129 /* ---------------------------------------------------------------------- */
 130
 131 /* ADS Tech Instant TV DVB-T PCI Remote */
 132 static IR_KEYTAB_TYPE ir_codes_adstech_dvb_t_pci[IR_KEYTAB_SIZE] = {
 133         /* Keys 0 to 9 */
 134         [0x4d] = KEY_0,
 135         [0x57] = KEY_1,
 136         [0x4f] = KEY_2,
 137         [0x53] = KEY_3,
 138         [0x56] = KEY_4,
 139         [0x4e] = KEY_5,
 140         [0x5e] = KEY_6,
 141         [0x54] = KEY_7,
 142         [0x4c] = KEY_8,
 143         [0x5c] = KEY_9,
 144
 145         [0x5b] = KEY_POWER,
 146         [0x5f] = KEY_MUTE,
 147         [0x55] = KEY_GOTO,
 148         [0x5d] = KEY_SEARCH,
 149         [0x17] = KEY_EPG,               /* Guide */
 150         [0x1f] = KEY_MENU,
 151         [0x0f] = KEY_UP,
 152         [0x46] = KEY_DOWN,
 153         [0x16] = KEY_LEFT,
 154         [0x1e] = KEY_RIGHT,
 155         [0x0e] = KEY_SELECT,            /* Enter */
 156         [0x5a] = KEY_INFO,
 157         [0x52] = KEY_EXIT,
 158         [0x59] = KEY_PREVIOUS,
 159         [0x51] = KEY_NEXT,
 160         [0x58] = KEY_REWIND,
 161         [0x50] = KEY_FORWARD,
 162         [0x44] = KEY_PLAYPAUSE,
 163         [0x07] = KEY_STOP,
 164         [0x1b] = KEY_RECORD,
 165         [0x13] = KEY_TUNER,             /* Live */
 166         [0x0a] = KEY_A,
 167         [0x12] = KEY_B,
 168         [0x03] = KEY_PROG1,             /* 1 */
 169         [0x01] = KEY_PROG2,             /* 2 */
 170         [0x00] = KEY_PROG3,             /* 3 */
 171         [0x06] = KEY_DVD,
 172         [0x48] = KEY_AUX,               /* Photo */
 173         [0x40] = KEY_VIDEO,
 174         [0x19] = KEY_AUDIO,             /* Music */
 175         [0x0b] = KEY_CHANNELUP,
 176         [0x08] = KEY_CHANNELDOWN,
 177         [0x15] = KEY_VOLUMEUP,
 178         [0x1c] = KEY_VOLUMEDOWN,
 179 };
 180
 181 /* ---------------------------------------------------------------------- */
 182
 183 /* MSI TV@nywhere remote */
 184 static IR_KEYTAB_TYPE ir_codes_msi_tvanywhere[IR_KEYTAB_SIZE] = {
 185         /* Keys 0 to 9 */
 186         [0x00] = KEY_0,
 187         [0x01] = KEY_1,
 188         [0x02] = KEY_2,
 189         [0x03] = KEY_3,
 190         [0x04] = KEY_4,
 191         [0x05] = KEY_5,
 192         [0x06] = KEY_6,
 193         [0x07] = KEY_7,
 194         [0x08] = KEY_8,
 195         [0x09] = KEY_9,
 196
 197         [0x0c] = KEY_MUTE,
 198         [0x0f] = KEY_SCREEN,            /* Full Screen */
 199         [0x10] = KEY_F,                 /* Funtion */
 200         [0x11] = KEY_T,                 /* Time shift */
 201         [0x12] = KEY_POWER,
 202         [0x13] = KEY_MEDIA,             /* MTS */
 203         [0x14] = KEY_SLOW,
 204         [0x16] = KEY_REWIND,            /* backward << */
 205         [0x17] = KEY_ENTER,             /* Return */
 206         [0x18] = KEY_FASTFORWARD,       /* forward >> */
 207         [0x1a] = KEY_CHANNELUP,
 208         [0x1b] = KEY_VOLUMEUP,
 209         [0x1e] = KEY_CHANNELDOWN,
 210         [0x1f] = KEY_VOLUMEDOWN,
 211 };
 212
 213 /* ---------------------------------------------------------------------- */
 214
 215 struct cx88_IR {
 216         struct cx88_core *core;
 217         struct input_dev input;
 218         struct ir_input_state ir;
 219         char name[32];
 220         char phys[32];
 221
 222         /* sample from gpio pin 16 */
 223         int sampling;
 224         u32 samples[16];
 225         int scount;
 226         unsigned long release;
 227
 228         /* poll external decoder */
 229         int polling;
 230         struct work_struct work;
 231         struct timer_list timer;
 232         u32 gpio_addr;
 233         u32 last_gpio;
 234         u32 mask_keycode;
 235         u32 mask_keydown;
 236         u32 mask_keyup;
 237 };
 238
 239 static int ir_debug = 0;
 240 module_param(ir_debug, int, 0644);      /* debug level [IR] */
 241 MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
 242
 243 #define ir_dprintk(fmt, arg...) if (ir_debug) \
 244         printk(KERN_DEBUG "%s IR: " fmt , ir->core->name, ## arg)
 245
 246 /* ---------------------------------------------------------------------- */
 247
 248 static void cx88_ir_handle_key(struct cx88_IR *ir)
 249 {
 250         struct cx88_core *core = ir->core;
 251         u32 gpio, data;
 252
 253         /* read gpio value */
 254         gpio = cx_read(ir->gpio_addr);
 255         if (ir->polling) {
 256                 if (ir->last_gpio == gpio)
 257                         return;
 258                 ir->last_gpio = gpio;
 259         }
 260
 261         /* extract data */
 262         data = ir_extract_bits(gpio, ir->mask_keycode);
 263         ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
 264                    gpio, data,
 265                    ir->polling ? "poll" : "irq",
 266                    (gpio & ir->mask_keydown) ? " down" : "",
 267                    (gpio & ir->mask_keyup) ? " up" : "");
 268
 269         if (ir->mask_keydown) {
 270                 /* bit set on keydown */
 271                 if (gpio & ir->mask_keydown) {
 272                         ir_input_keydown(&ir->input, &ir->ir, data, data);
 273                 } else {
 274                         ir_input_nokey(&ir->input, &ir->ir);
 275                 }
 276
 277         } else if (ir->mask_keyup) {
 278                 /* bit cleared on keydown */
 279                 if (0 == (gpio & ir->mask_keyup)) {
 280                         ir_input_keydown(&ir->input, &ir->ir, data, data);
 281                 } else {
 282                         ir_input_nokey(&ir->input, &ir->ir);
 283                 }
 284
 285         } else {
 286                 /* can't distinguish keydown/up :-/ */
 287                 ir_input_keydown(&ir->input, &ir->ir, data, data);
 288                 ir_input_nokey(&ir->input, &ir->ir);
 289         }
 290 }
 291
 292 static void ir_timer(unsigned long data)
 293 {
 294         struct cx88_IR *ir = (struct cx88_IR *)data;
 295
 296         schedule_work(&ir->work);
 297 }
 298
 299 static void cx88_ir_work(void *data)
 300 {
 301         struct cx88_IR *ir = data;
 302         unsigned long timeout;
 303
 304         cx88_ir_handle_key(ir);
 305         timeout = jiffies + (ir->polling * HZ / 1000);
 306         mod_timer(&ir->timer, timeout);
 307 }
 308
 309 /* ---------------------------------------------------------------------- */
 310
 311 int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
 312 {
 313         struct cx88_IR *ir;
 314         IR_KEYTAB_TYPE *ir_codes = NULL;
 315         int ir_type = IR_TYPE_OTHER;
 316
 317         ir = kmalloc(sizeof(*ir), GFP_KERNEL);
 318         if (NULL == ir)
 319                 return -ENOMEM;
 320         memset(ir, 0, sizeof(*ir));
 321
 322         /* detect & configure */
 323         switch (core->board) {
 324         case CX88_BOARD_DNTV_LIVE_DVB_T:
 325         case CX88_BOARD_KWORLD_DVB_T:
 326                 ir_codes = ir_codes_dntv_live_dvb_t;
 327                 ir->gpio_addr = MO_GP1_IO;
 328                 ir->mask_keycode = 0x1f;
 329                 ir->mask_keyup = 0x60;
 330                 ir->polling = 50; /* ms */
 331                 break;
 332         case CX88_BOARD_HAUPPAUGE:
 333         case CX88_BOARD_HAUPPAUGE_DVB_T1:
 334                 ir_codes = ir_codes_hauppauge_new;
 335                 ir_type = IR_TYPE_RC5;
 336                 ir->sampling = 1;
 337                 break;
 338         case CX88_BOARD_WINFAST2000XP_EXPERT:
 339                 ir_codes = ir_codes_winfast;
 340                 ir->gpio_addr = MO_GP0_IO;
 341                 ir->mask_keycode = 0x8f8;
 342                 ir->mask_keyup = 0x100;
 343                 ir->polling = 1; /* ms */
 344                 break;
 345         case CX88_BOARD_IODATA_GVBCTV7E:
 346                 ir_codes = ir_codes_iodata_bctv7e;
 347                 ir->gpio_addr = MO_GP0_IO;
 348                 ir->mask_keycode = 0xfd;
 349                 ir->mask_keydown = 0x02;
 350                 ir->polling = 5; /* ms */
 351                 break;
 352         case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
 353                 ir_codes = ir_codes_pixelview;
 354                 ir->gpio_addr = MO_GP1_IO;
 355                 ir->mask_keycode = 0x1f;
 356                 ir->mask_keyup = 0x80;
 357                 ir->polling = 1; /* ms */
 358                 break;
 359         case CX88_BOARD_ADSTECH_DVB_T_PCI:
 360                 ir_codes = ir_codes_adstech_dvb_t_pci;
 361                 ir->gpio_addr = MO_GP1_IO;
 362                 ir->mask_keycode = 0xbf;
 363                 ir->mask_keyup = 0x40;
 364                 ir->polling = 50; /* ms */
 365                 break;
 366         case CX88_BOARD_MSI_TVANYWHERE_MASTER:
 367                 ir_codes = ir_codes_msi_tvanywhere;
 368                 ir->gpio_addr = MO_GP1_IO;
 369                 ir->mask_keycode = 0x1f;
 370                 ir->mask_keyup = 0x40;
 371                 ir->polling = 1; /* ms */
 372                 break;
 373         }
 374
 375         if (NULL == ir_codes) {
 376                 kfree(ir);
 377                 return -ENODEV;
 378         }
 379
 380         /* init input device */
 381         snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)",
 382                  cx88_boards[core->board].name);
 383         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
 384
 385         ir_input_init(&ir->input, &ir->ir, ir_type, ir_codes);
 386         ir->input.name = ir->name;
 387         ir->input.phys = ir->phys;
 388         ir->input.id.bustype = BUS_PCI;
 389         ir->input.id.version = 1;
 390         if (pci->subsystem_vendor) {
 391                 ir->input.id.vendor = pci->subsystem_vendor;
 392                 ir->input.id.product = pci->subsystem_device;
 393         } else {
 394                 ir->input.id.vendor = pci->vendor;
 395                 ir->input.id.product = pci->device;
 396         }
 397
 398         /* record handles to ourself */
 399         ir->core = core;
 400         core->ir = ir;
 401
 402         if (ir->polling) {
 403                 INIT_WORK(&ir->work, cx88_ir_work, ir);
 404                 init_timer(&ir->timer);
 405                 ir->timer.function = ir_timer;
 406                 ir->timer.data = (unsigned long)ir;
 407                 schedule_work(&ir->work);
 408         }
 409         if (ir->sampling) {
 410                 core->pci_irqmask |= (1 << 18); /* IR_SMP_INT */
 411                 cx_write(MO_DDS_IO, 0xa80a80);  /* 4 kHz sample rate */
 412                 cx_write(MO_DDSCFG_IO, 0x5);    /* enable */
 413         }
 414
 415         /* all done */
 416         input_register_device(&ir->input);
 417         printk("%s: registered IR remote control\n", core->name);
 418
 419         return 0;
 420 }
 421
 422 int cx88_ir_fini(struct cx88_core *core)
 423 {
 424         struct cx88_IR *ir = core->ir;
 425
 426         /* skip detach on non attached boards */
 427         if (NULL == ir)
 428                 return 0;
 429
 430         if (ir->polling) {
 431                 del_timer(&ir->timer);
 432                 flush_scheduled_work();
 433         }
 434
 435         input_unregister_device(&ir->input);
 436         kfree(ir);
 437
 438         /* done */
 439         core->ir = NULL;
 440         return 0;
 441 }
 442
 443 /* ---------------------------------------------------------------------- */
 444
 445 void cx88_ir_irq(struct cx88_core *core)
 446 {
 447         struct cx88_IR *ir = core->ir;
 448         u32 samples, rc5;
 449         int i;
 450
 451         if (NULL == ir)
 452                 return;
 453         if (!ir->sampling)
 454                 return;
 455
 456         samples = cx_read(MO_SAMPLE_IO);
 457         if (0 != samples && 0xffffffff != samples) {
 458                 /* record sample data */
 459                 if (ir->scount < ARRAY_SIZE(ir->samples))
 460                         ir->samples[ir->scount++] = samples;
 461                 return;
 462         }
 463         if (!ir->scount) {
 464                 /* nothing to sample */
 465                 if (ir->ir.keypressed && time_after(jiffies, ir->release))
 466                         ir_input_nokey(&ir->input, &ir->ir);
 467                 return;
 468         }
 469
 470         /* have a complete sample */
 471         if (ir->scount < ARRAY_SIZE(ir->samples))
 472                 ir->samples[ir->scount++] = samples;
 473         for (i = 0; i < ir->scount; i++)
 474                 ir->samples[i] = ~ir->samples[i];
 475         if (ir_debug)
 476                 ir_dump_samples(ir->samples, ir->scount);
 477
 478         /* decode it */
 479         switch (core->board) {
 480         case CX88_BOARD_HAUPPAUGE:
 481         case CX88_BOARD_HAUPPAUGE_DVB_T1:
 482                 rc5 = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
 483                 ir_dprintk("biphase decoded: %x\n", rc5);
 484                 if ((rc5 & 0xfffff000) != 0x3000)
 485                         break;
 486                 ir_input_keydown(&ir->input, &ir->ir, rc5 & 0x3f, rc5);
 487                 ir->release = jiffies + msecs_to_jiffies(120);
 488                 break;
 489         }
 490
 491         ir->scount = 0;
 492         return;
 493 }
 494
 495 /* ---------------------------------------------------------------------- */
 496
 497 MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
 498 MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
 499 MODULE_LICENSE("GPL");
 500
 501 /*
 502  * Local variables:
 503  * c-basic-offset: 8
 504  * End:
 505  */