SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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/delay.h>
  27 #include <linux/input.h>
  28 #include <linux/pci.h>
  29 #include <linux/module.h>
  30
  31 #include "cx88.h"
  32 #include <media/ir-common.h>
  33
  34 /* ---------------------------------------------------------------------- */
  35
  36 struct cx88_IR {
  37         struct cx88_core *core;
  38         struct input_dev *input;
  39         struct ir_input_state ir;
  40         char name[32];
  41         char phys[32];
  42
  43         /* sample from gpio pin 16 */
  44         u32 sampling;
  45         u32 samples[16];
  46         int scount;
  47         unsigned long release;
  48
  49         /* poll external decoder */
  50         int polling;
  51         struct delayed_work work;
  52         u32 gpio_addr;
  53         u32 last_gpio;
  54         u32 mask_keycode;
  55         u32 mask_keydown;
  56         u32 mask_keyup;
  57 };
  58
  59 static int ir_debug;
  60 module_param(ir_debug, int, 0644);      /* debug level [IR] */
  61 MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
  62
  63 #define ir_dprintk(fmt, arg...) if (ir_debug) \
  64         printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)
  65
  66 /* ---------------------------------------------------------------------- */
  67
  68 static void cx88_ir_handle_key(struct cx88_IR *ir)
  69 {
  70         struct cx88_core *core = ir->core;
  71         u32 gpio, data, auxgpio;
  72
  73         /* read gpio value */
  74         gpio = cx_read(ir->gpio_addr);
  75         switch (core->boardnr) {
  76         case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
  77                 /* This board apparently uses a combination of 2 GPIO
  78                    to represent the keys. Additionally, the second GPIO
  79                    can be used for parity.
  80
  81                    Example:
  82
  83                    for key "5"
  84                         gpio = 0x758, auxgpio = 0xe5 or 0xf5
  85                    for key "Power"
  86                         gpio = 0x758, auxgpio = 0xed or 0xfd
  87                  */
  88
  89                 auxgpio = cx_read(MO_GP1_IO);
  90                 /* Take out the parity part */
  91                 gpio=(gpio & 0x7fd) + (auxgpio & 0xef);
  92                 break;
  93         case CX88_BOARD_WINFAST_DTV1000:
  94         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
  95                 gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900);
  96                 auxgpio = gpio;
  97                 break;
  98         default:
  99                 auxgpio = gpio;
 100         }
 101         if (ir->polling) {
 102                 if (ir->last_gpio == auxgpio)
 103                         return;
 104                 ir->last_gpio = auxgpio;
 105         }
 106
 107         /* extract data */
 108         data = ir_extract_bits(gpio, ir->mask_keycode);
 109         ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
 110                    gpio, data,
 111                    ir->polling ? "poll" : "irq",
 112                    (gpio & ir->mask_keydown) ? " down" : "",
 113                    (gpio & ir->mask_keyup) ? " up" : "");
 114
 115         if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) {
 116                 u32 gpio_key = cx_read(MO_GP0_IO);
 117
 118                 data = (data << 4) | ((gpio_key & 0xf0) >> 4);
 119
 120                 ir_input_keydown(ir->input, &ir->ir, data, data);
 121                 ir_input_nokey(ir->input, &ir->ir);
 122
 123         } else if (ir->mask_keydown) {
 124                 /* bit set on keydown */
 125                 if (gpio & ir->mask_keydown) {
 126                         ir_input_keydown(ir->input, &ir->ir, data, data);
 127                 } else {
 128                         ir_input_nokey(ir->input, &ir->ir);
 129                 }
 130
 131         } else if (ir->mask_keyup) {
 132                 /* bit cleared on keydown */
 133                 if (0 == (gpio & ir->mask_keyup)) {
 134                         ir_input_keydown(ir->input, &ir->ir, data, data);
 135                 } else {
 136                         ir_input_nokey(ir->input, &ir->ir);
 137                 }
 138
 139         } else {
 140                 /* can't distinguish keydown/up :-/ */
 141                 ir_input_keydown(ir->input, &ir->ir, data, data);
 142                 ir_input_nokey(ir->input, &ir->ir);
 143         }
 144 }
 145
 146 static void cx88_ir_work(struct work_struct *work)
 147 {
 148         struct cx88_IR *ir = container_of(work, struct cx88_IR, work.work);
 149
 150         cx88_ir_handle_key(ir);
 151         schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
 152 }
 153
 154 void cx88_ir_start(struct cx88_core *core, struct cx88_IR *ir)
 155 {
 156         if (ir->polling) {
 157                 INIT_DELAYED_WORK(&ir->work, cx88_ir_work);
 158                 schedule_delayed_work(&ir->work, 0);
 159         }
 160         if (ir->sampling) {
 161                 core->pci_irqmask |= PCI_INT_IR_SMPINT;
 162                 cx_write(MO_DDS_IO, 0xa80a80);  /* 4 kHz sample rate */
 163                 cx_write(MO_DDSCFG_IO, 0x5);    /* enable */
 164         }
 165 }
 166
 167 void cx88_ir_stop(struct cx88_core *core, struct cx88_IR *ir)
 168 {
 169         if (ir->sampling) {
 170                 cx_write(MO_DDSCFG_IO, 0x0);
 171                 core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
 172         }
 173
 174         if (ir->polling)
 175                 cancel_delayed_work_sync(&ir->work);
 176 }
 177
 178 /* ---------------------------------------------------------------------- */
 179
 180 int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
 181 {
 182         struct cx88_IR *ir;
 183         struct input_dev *input_dev;
 184         IR_KEYTAB_TYPE *ir_codes = NULL;
 185         int ir_type = IR_TYPE_OTHER;
 186         int err = -ENOMEM;
 187
 188         ir = kzalloc(sizeof(*ir), GFP_KERNEL);
 189         input_dev = input_allocate_device();
 190         if (!ir || !input_dev)
 191                 goto err_out_free;
 192
 193         ir->input = input_dev;
 194
 195         /* detect & configure */
 196         switch (core->boardnr) {
 197         case CX88_BOARD_DNTV_LIVE_DVB_T:
 198         case CX88_BOARD_KWORLD_DVB_T:
 199         case CX88_BOARD_KWORLD_DVB_T_CX22702:
 200                 ir_codes = ir_codes_dntv_live_dvb_t;
 201                 ir->gpio_addr = MO_GP1_IO;
 202                 ir->mask_keycode = 0x1f;
 203                 ir->mask_keyup = 0x60;
 204                 ir->polling = 50; /* ms */
 205                 break;
 206         case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
 207                 ir_codes = ir_codes_cinergy_1400;
 208                 ir_type = IR_TYPE_PD;
 209                 ir->sampling = 0xeb04; /* address */
 210                 break;
 211         case CX88_BOARD_HAUPPAUGE:
 212         case CX88_BOARD_HAUPPAUGE_DVB_T1:
 213         case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 214         case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 215         case CX88_BOARD_HAUPPAUGE_HVR1100:
 216         case CX88_BOARD_HAUPPAUGE_HVR3000:
 217         case CX88_BOARD_HAUPPAUGE_HVR4000:
 218         case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
 219         case CX88_BOARD_PCHDTV_HD3000:
 220         case CX88_BOARD_PCHDTV_HD5500:
 221         case CX88_BOARD_HAUPPAUGE_IRONLY:
 222                 ir_codes = ir_codes_hauppauge_new;
 223                 ir_type = IR_TYPE_RC5;
 224                 ir->sampling = 1;
 225                 break;
 226         case CX88_BOARD_WINFAST_DTV2000H:
 227                 ir_codes = ir_codes_winfast;
 228                 ir->gpio_addr = MO_GP0_IO;
 229                 ir->mask_keycode = 0x8f8;
 230                 ir->mask_keyup = 0x100;
 231                 ir->polling = 50; /* ms */
 232                 break;
 233         case CX88_BOARD_WINFAST2000XP_EXPERT:
 234         case CX88_BOARD_WINFAST_DTV1000:
 235         case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
 236                 ir_codes = ir_codes_winfast;
 237                 ir->gpio_addr = MO_GP0_IO;
 238                 ir->mask_keycode = 0x8f8;
 239                 ir->mask_keyup = 0x100;
 240                 ir->polling = 1; /* ms */
 241                 break;
 242         case CX88_BOARD_IODATA_GVBCTV7E:
 243                 ir_codes = ir_codes_iodata_bctv7e;
 244                 ir->gpio_addr = MO_GP0_IO;
 245                 ir->mask_keycode = 0xfd;
 246                 ir->mask_keydown = 0x02;
 247                 ir->polling = 5; /* ms */
 248                 break;
 249         case CX88_BOARD_PROLINK_PLAYTVPVR:
 250         case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
 251                 ir_codes = ir_codes_pixelview;
 252                 ir->gpio_addr = MO_GP1_IO;
 253                 ir->mask_keycode = 0x1f;
 254                 ir->mask_keyup = 0x80;
 255                 ir->polling = 1; /* ms */
 256                 break;
 257         case CX88_BOARD_PROLINK_PV_8000GT:
 258         case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
 259                 ir_codes = ir_codes_pixelview_new;
 260                 ir->gpio_addr = MO_GP1_IO;
 261                 ir->mask_keycode = 0x3f;
 262                 ir->mask_keyup = 0x80;
 263                 ir->polling = 1; /* ms */
 264                 break;
 265         case CX88_BOARD_KWORLD_LTV883:
 266                 ir_codes = ir_codes_pixelview;
 267                 ir->gpio_addr = MO_GP1_IO;
 268                 ir->mask_keycode = 0x1f;
 269                 ir->mask_keyup = 0x60;
 270                 ir->polling = 1; /* ms */
 271                 break;
 272         case CX88_BOARD_ADSTECH_DVB_T_PCI:
 273                 ir_codes = ir_codes_adstech_dvb_t_pci;
 274                 ir->gpio_addr = MO_GP1_IO;
 275                 ir->mask_keycode = 0xbf;
 276                 ir->mask_keyup = 0x40;
 277                 ir->polling = 50; /* ms */
 278                 break;
 279         case CX88_BOARD_MSI_TVANYWHERE_MASTER:
 280                 ir_codes = ir_codes_msi_tvanywhere;
 281                 ir->gpio_addr = MO_GP1_IO;
 282                 ir->mask_keycode = 0x1f;
 283                 ir->mask_keyup = 0x40;
 284                 ir->polling = 1; /* ms */
 285                 break;
 286         case CX88_BOARD_AVERTV_303:
 287         case CX88_BOARD_AVERTV_STUDIO_303:
 288                 ir_codes         = ir_codes_avertv_303;
 289                 ir->gpio_addr    = MO_GP2_IO;
 290                 ir->mask_keycode = 0xfb;
 291                 ir->mask_keydown = 0x02;
 292                 ir->polling      = 50; /* ms */
 293                 break;
 294         case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
 295                 ir_codes = ir_codes_dntv_live_dvbt_pro;
 296                 ir_type = IR_TYPE_PD;
 297                 ir->sampling = 0xff00; /* address */
 298                 break;
 299         case CX88_BOARD_NORWOOD_MICRO:
 300                 ir_codes         = ir_codes_norwood;
 301                 ir->gpio_addr    = MO_GP1_IO;
 302                 ir->mask_keycode = 0x0e;
 303                 ir->mask_keyup   = 0x80;
 304                 ir->polling      = 50; /* ms */
 305                 break;
 306         case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
 307                 ir_codes = ir_codes_npgtech;
 308                 ir->gpio_addr = MO_GP0_IO;
 309                 ir->mask_keycode = 0xfa;
 310                 ir->polling = 50; /* ms */
 311                 break;
 312         case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 313                 ir_codes = ir_codes_pinnacle_pctv_hd;
 314                 ir_type = IR_TYPE_RC5;
 315                 ir->sampling = 1;
 316                 break;
 317         case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
 318                 ir_codes = ir_codes_powercolor_real_angel;
 319                 ir->gpio_addr = MO_GP2_IO;
 320                 ir->mask_keycode = 0x7e;
 321                 ir->polling = 100; /* ms */
 322                 break;
 323         }
 324
 325         if (NULL == ir_codes) {
 326                 err = -ENODEV;
 327                 goto err_out_free;
 328         }
 329
 330         /* init input device */
 331         snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
 332         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
 333
 334         ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
 335         input_dev->name = ir->name;
 336         input_dev->phys = ir->phys;
 337         input_dev->id.bustype = BUS_PCI;
 338         input_dev->id.version = 1;
 339         if (pci->subsystem_vendor) {
 340                 input_dev->id.vendor = pci->subsystem_vendor;
 341                 input_dev->id.product = pci->subsystem_device;
 342         } else {
 343                 input_dev->id.vendor = pci->vendor;
 344                 input_dev->id.product = pci->device;
 345         }
 346         input_dev->dev.parent = &pci->dev;
 347         /* record handles to ourself */
 348         ir->core = core;
 349         core->ir = ir;
 350
 351         cx88_ir_start(core, ir);
 352
 353         /* all done */
 354         err = input_register_device(ir->input);
 355         if (err)
 356                 goto err_out_stop;
 357
 358         return 0;
 359
 360  err_out_stop:
 361         cx88_ir_stop(core, ir);
 362         core->ir = NULL;
 363  err_out_free:
 364         input_free_device(input_dev);
 365         kfree(ir);
 366         return err;
 367 }
 368
 369 int cx88_ir_fini(struct cx88_core *core)
 370 {
 371         struct cx88_IR *ir = core->ir;
 372
 373         /* skip detach on non attached boards */
 374         if (NULL == ir)
 375                 return 0;
 376
 377         cx88_ir_stop(core, ir);
 378         input_unregister_device(ir->input);
 379         kfree(ir);
 380
 381         /* done */
 382         core->ir = NULL;
 383         return 0;
 384 }
 385
 386 /* ---------------------------------------------------------------------- */
 387
 388 void cx88_ir_irq(struct cx88_core *core)
 389 {
 390         struct cx88_IR *ir = core->ir;
 391         u32 samples, ircode;
 392         int i, start, range, toggle, dev, code;
 393
 394         if (NULL == ir)
 395                 return;
 396         if (!ir->sampling)
 397                 return;
 398
 399         samples = cx_read(MO_SAMPLE_IO);
 400         if (0 != samples && 0xffffffff != samples) {
 401                 /* record sample data */
 402                 if (ir->scount < ARRAY_SIZE(ir->samples))
 403                         ir->samples[ir->scount++] = samples;
 404                 return;
 405         }
 406         if (!ir->scount) {
 407                 /* nothing to sample */
 408                 if (ir->ir.keypressed && time_after(jiffies, ir->release))
 409                         ir_input_nokey(ir->input, &ir->ir);
 410                 return;
 411         }
 412
 413         /* have a complete sample */
 414         if (ir->scount < ARRAY_SIZE(ir->samples))
 415                 ir->samples[ir->scount++] = samples;
 416         for (i = 0; i < ir->scount; i++)
 417                 ir->samples[i] = ~ir->samples[i];
 418         if (ir_debug)
 419                 ir_dump_samples(ir->samples, ir->scount);
 420
 421         /* decode it */
 422         switch (core->boardnr) {
 423         case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
 424         case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
 425                 ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4);
 426
 427                 if (ircode == 0xffffffff) { /* decoding error */
 428                         ir_dprintk("pulse distance decoding error\n");
 429                         break;
 430                 }
 431
 432                 ir_dprintk("pulse distance decoded: %x\n", ircode);
 433
 434                 if (ircode == 0) { /* key still pressed */
 435                         ir_dprintk("pulse distance decoded repeat code\n");
 436                         ir->release = jiffies + msecs_to_jiffies(120);
 437                         break;
 438                 }
 439
 440                 if ((ircode & 0xffff) != (ir->sampling & 0xffff)) { /* wrong address */
 441                         ir_dprintk("pulse distance decoded wrong address\n");
 442                         break;
 443                 }
 444
 445                 if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */
 446                         ir_dprintk("pulse distance decoded wrong check sum\n");
 447                         break;
 448                 }
 449
 450                 ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f);
 451
 452                 ir_input_keydown(ir->input, &ir->ir, (ircode >> 16) & 0x7f, (ircode >> 16) & 0xff);
 453                 ir->release = jiffies + msecs_to_jiffies(120);
 454                 break;
 455         case CX88_BOARD_HAUPPAUGE:
 456         case CX88_BOARD_HAUPPAUGE_DVB_T1:
 457         case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 458         case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 459         case CX88_BOARD_HAUPPAUGE_HVR1100:
 460         case CX88_BOARD_HAUPPAUGE_HVR3000:
 461         case CX88_BOARD_HAUPPAUGE_HVR4000:
 462         case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
 463         case CX88_BOARD_PCHDTV_HD3000:
 464         case CX88_BOARD_PCHDTV_HD5500:
 465         case CX88_BOARD_HAUPPAUGE_IRONLY:
 466                 ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
 467                 ir_dprintk("biphase decoded: %x\n", ircode);
 468                 /*
 469                  * RC5 has an extension bit which adds a new range
 470                  * of available codes, this is detected here. Also
 471                  * hauppauge remotes (black/silver) always use
 472                  * specific device ids. If we do not filter the
 473                  * device ids then messages destined for devices
 474                  * such as TVs (id=0) will get through to the
 475                  * device causing mis-fired events.
 476                  */
 477                 /* split rc5 data block ... */
 478                 start = (ircode & 0x2000) >> 13;
 479                 range = (ircode & 0x1000) >> 12;
 480                 toggle= (ircode & 0x0800) >> 11;
 481                 dev   = (ircode & 0x07c0) >> 6;
 482                 code  = (ircode & 0x003f) | ((range << 6) ^ 0x0040);
 483                 if( start != 1)
 484                         /* no key pressed */
 485                         break;
 486                 if ( dev != 0x1e && dev != 0x1f )
 487                         /* not a hauppauge remote */
 488                         break;
 489                 ir_input_keydown(ir->input, &ir->ir, code, ircode);
 490                 ir->release = jiffies + msecs_to_jiffies(120);
 491                 break;
 492         case CX88_BOARD_PINNACLE_PCTV_HD_800i:
 493                 ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
 494                 ir_dprintk("biphase decoded: %x\n", ircode);
 495                 if ((ircode & 0xfffff000) != 0x3000)
 496                         break;
 497                 ir_input_keydown(ir->input, &ir->ir, ircode & 0x3f, ircode);
 498                 ir->release = jiffies + msecs_to_jiffies(120);
 499                 break;
 500         }
 501
 502         ir->scount = 0;
 503         return;
 504 }
 505
 506 /* ---------------------------------------------------------------------- */
 507
 508 MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
 509 MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
 510 MODULE_LICENSE("GPL");
 511 /*
 512  * Local variables:
 513  * c-basic-offset: 8
 514  * End:
 515  */