drivers/media/video/saa7134/saa7134-input.c

   1 /*
   2  *
   3  * handle saa7134 IR remotes via linux kernel input layer.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18  *
  19  */
  20
  21 #include <linux/module.h>
  22 #include <linux/moduleparam.h>
  23 #include <linux/init.h>
  24 #include <linux/delay.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/input.h>
  27
  28 #include "saa7134-reg.h"
  29 #include "saa7134.h"
  30
  31 static unsigned int disable_ir = 0;
  32 module_param(disable_ir, int, 0444);
  33 MODULE_PARM_DESC(disable_ir,"disable infrared remote support");
  34
  35 static unsigned int ir_debug = 0;
  36 module_param(ir_debug, int, 0644);
  37 MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
  38
  39 static int pinnacle_remote = 0;
  40 module_param(pinnacle_remote, int, 0644);    /* Choose Pinnacle PCTV remote */
  41 MODULE_PARM_DESC(pinnacle_remote, "Specify Pinnacle PCTV remote: 0=coloured, 1=grey (defaults to 0)");
  42
  43 static int ir_rc5_remote_gap = 885;
  44 module_param(ir_rc5_remote_gap, int, 0644);
  45 static int ir_rc5_key_timeout = 115;
  46 module_param(ir_rc5_key_timeout, int, 0644);
  47
  48 #define dprintk(fmt, arg...)    if (ir_debug) \
  49         printk(KERN_DEBUG "%s/ir: " fmt, dev->name , ## arg)
  50 #define i2cdprintk(fmt, arg...)    if (ir_debug) \
  51         printk(KERN_DEBUG "%s/ir: " fmt, ir->c.name , ## arg)
  52
  53 /** rc5 functions */
  54 static int saa7134_rc5_irq(struct saa7134_dev *dev);
  55
  56 /* -------------------- GPIO generic keycode builder -------------------- */
  57
  58 static int build_key(struct saa7134_dev *dev)
  59 {
  60         struct card_ir *ir = dev->remote;
  61         u32 gpio, data;
  62
  63         /* rising SAA7134_GPIO_GPRESCAN reads the status */
  64         saa_clearb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
  65         saa_setb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
  66
  67         gpio = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2);
  68         if (ir->polling) {
  69                 if (ir->last_gpio == gpio)
  70                         return 0;
  71                 ir->last_gpio = gpio;
  72         }
  73
  74         data = ir_extract_bits(gpio, ir->mask_keycode);
  75         dprintk("build_key gpio=0x%x mask=0x%x data=%d\n",
  76                 gpio, ir->mask_keycode, data);
  77
  78         if (ir->polling) {
  79                 if ((ir->mask_keydown  &&  (0 != (gpio & ir->mask_keydown))) ||
  80                     (ir->mask_keyup    &&  (0 == (gpio & ir->mask_keyup)))) {
  81                         ir_input_keydown(ir->dev, &ir->ir, data, data);
  82                 } else {
  83                         ir_input_nokey(ir->dev, &ir->ir);
  84                 }
  85         }
  86         else {  /* IRQ driven mode - handle key press and release in one go */
  87                 if ((ir->mask_keydown  &&  (0 != (gpio & ir->mask_keydown))) ||
  88                     (ir->mask_keyup    &&  (0 == (gpio & ir->mask_keyup)))) {
  89                         ir_input_keydown(ir->dev, &ir->ir, data, data);
  90                         ir_input_nokey(ir->dev, &ir->ir);
  91                 }
  92         }
  93
  94         return 0;
  95 }
  96
  97 /* --------------------- Chip specific I2C key builders ----------------- */
  98
  99 static int get_key_purpletv(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 100 {
 101         unsigned char b;
 102
 103         /* poll IR chip */
 104         if (1 != i2c_master_recv(&ir->c,&b,1)) {
 105                 i2cdprintk("read error\n");
 106                 return -EIO;
 107         }
 108
 109         /* no button press */
 110         if (b==0)
 111                 return 0;
 112
 113         /* repeating */
 114         if (b & 0x80)
 115                 return 1;
 116
 117         *ir_key = b;
 118         *ir_raw = b;
 119         return 1;
 120 }
 121
 122 static int get_key_hvr1110(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 123 {
 124         unsigned char buf[5], cod4, code3, code4;
 125
 126         /* poll IR chip */
 127         if (5 != i2c_master_recv(&ir->c,buf,5))
 128                 return -EIO;
 129
 130         cod4    = buf[4];
 131         code4   = (cod4 >> 2);
 132         code3   = buf[3];
 133         if (code3 == 0)
 134                 /* no key pressed */
 135                 return 0;
 136
 137         /* return key */
 138         *ir_key = code4;
 139         *ir_raw = code4;
 140         return 1;
 141 }
 142
 143 void saa7134_input_irq(struct saa7134_dev *dev)
 144 {
 145         struct card_ir *ir = dev->remote;
 146
 147         if (!ir->polling && !ir->rc5_gpio) {
 148                 build_key(dev);
 149         } else if (ir->rc5_gpio) {
 150                 saa7134_rc5_irq(dev);
 151         }
 152 }
 153
 154 static void saa7134_input_timer(unsigned long data)
 155 {
 156         struct saa7134_dev *dev = (struct saa7134_dev *)data;
 157         struct card_ir *ir = dev->remote;
 158
 159         build_key(dev);
 160         mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
 161 }
 162
 163 static void saa7134_ir_start(struct saa7134_dev *dev, struct card_ir *ir)
 164 {
 165         if (ir->polling) {
 166                 setup_timer(&ir->timer, saa7134_input_timer,
 167                             (unsigned long)dev);
 168                 ir->timer.expires  = jiffies + HZ;
 169                 add_timer(&ir->timer);
 170         } else if (ir->rc5_gpio) {
 171                 /* set timer_end for code completion */
 172                 init_timer(&ir->timer_end);
 173                 ir->timer_end.function = ir_rc5_timer_end;
 174                 ir->timer_end.data = (unsigned long)ir;
 175                 init_timer(&ir->timer_keyup);
 176                 ir->timer_keyup.function = ir_rc5_timer_keyup;
 177                 ir->timer_keyup.data = (unsigned long)ir;
 178                 ir->shift_by = 2;
 179                 ir->start = 0x2;
 180                 ir->addr = 0x17;
 181                 ir->rc5_key_timeout = ir_rc5_key_timeout;
 182                 ir->rc5_remote_gap = ir_rc5_remote_gap;
 183         }
 184 }
 185
 186 static void saa7134_ir_stop(struct saa7134_dev *dev)
 187 {
 188         if (dev->remote->polling)
 189                 del_timer_sync(&dev->remote->timer);
 190 }
 191
 192 int saa7134_input_init1(struct saa7134_dev *dev)
 193 {
 194         struct card_ir *ir;
 195         struct input_dev *input_dev;
 196         IR_KEYTAB_TYPE *ir_codes = NULL;
 197         u32 mask_keycode = 0;
 198         u32 mask_keydown = 0;
 199         u32 mask_keyup   = 0;
 200         int polling      = 0;
 201         int rc5_gpio     = 0;
 202         int ir_type      = IR_TYPE_OTHER;
 203         int err;
 204
 205         if (dev->has_remote != SAA7134_REMOTE_GPIO)
 206                 return -ENODEV;
 207         if (disable_ir)
 208                 return -ENODEV;
 209
 210         /* detect & configure */
 211         switch (dev->board) {
 212         case SAA7134_BOARD_FLYVIDEO2000:
 213         case SAA7134_BOARD_FLYVIDEO3000:
 214         case SAA7134_BOARD_FLYTVPLATINUM_FM:
 215         case SAA7134_BOARD_FLYTVPLATINUM_MINI2:
 216                 ir_codes     = ir_codes_flyvideo;
 217                 mask_keycode = 0xEC00000;
 218                 mask_keydown = 0x0040000;
 219                 break;
 220         case SAA7134_BOARD_CINERGY400:
 221         case SAA7134_BOARD_CINERGY600:
 222         case SAA7134_BOARD_CINERGY600_MK3:
 223                 ir_codes     = ir_codes_cinergy;
 224                 mask_keycode = 0x00003f;
 225                 mask_keyup   = 0x040000;
 226                 break;
 227         case SAA7134_BOARD_ECS_TVP3XP:
 228         case SAA7134_BOARD_ECS_TVP3XP_4CB5:
 229                 ir_codes     = ir_codes_eztv;
 230                 mask_keycode = 0x00017c;
 231                 mask_keyup   = 0x000002;
 232                 polling      = 50; // ms
 233                 break;
 234         case SAA7134_BOARD_KWORLD_XPERT:
 235         case SAA7134_BOARD_AVACSSMARTTV:
 236                 ir_codes     = ir_codes_pixelview;
 237                 mask_keycode = 0x00001F;
 238                 mask_keyup   = 0x000020;
 239                 polling      = 50; // ms
 240                 break;
 241         case SAA7134_BOARD_MD2819:
 242         case SAA7134_BOARD_KWORLD_VSTREAM_XPERT:
 243         case SAA7134_BOARD_AVERMEDIA_305:
 244         case SAA7134_BOARD_AVERMEDIA_307:
 245         case SAA7134_BOARD_AVERMEDIA_STUDIO_305:
 246         case SAA7134_BOARD_AVERMEDIA_STUDIO_307:
 247         case SAA7134_BOARD_AVERMEDIA_STUDIO_507:
 248         case SAA7134_BOARD_AVERMEDIA_GO_007_FM:
 249                 ir_codes     = ir_codes_avermedia;
 250                 mask_keycode = 0x0007C8;
 251                 mask_keydown = 0x000010;
 252                 polling      = 50; // ms
 253                 /* Set GPIO pin2 to high to enable the IR controller */
 254                 saa_setb(SAA7134_GPIO_GPMODE0, 0x4);
 255                 saa_setb(SAA7134_GPIO_GPSTATUS0, 0x4);
 256                 break;
 257         case SAA7134_BOARD_AVERMEDIA_777:
 258         case SAA7134_BOARD_AVERMEDIA_A16AR:
 259                 ir_codes     = ir_codes_avermedia;
 260                 mask_keycode = 0x02F200;
 261                 mask_keydown = 0x000400;
 262                 polling      = 50; // ms
 263                 /* Without this we won't receive key up events */
 264                 saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
 265                 saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
 266                 break;
 267         case SAA7134_BOARD_KWORLD_TERMINATOR:
 268                 ir_codes     = ir_codes_pixelview;
 269                 mask_keycode = 0x00001f;
 270                 mask_keyup   = 0x000060;
 271                 polling      = 50; // ms
 272                 break;
 273         case SAA7134_BOARD_MANLI_MTV001:
 274         case SAA7134_BOARD_MANLI_MTV002:
 275         case SAA7134_BOARD_BEHOLD_409FM:
 276                 ir_codes     = ir_codes_manli;
 277                 mask_keycode = 0x001f00;
 278                 mask_keyup   = 0x004000;
 279                 polling      = 50; // ms
 280                 break;
 281         case SAA7134_BOARD_SEDNA_PC_TV_CARDBUS:
 282                 ir_codes     = ir_codes_pctv_sedna;
 283                 mask_keycode = 0x001f00;
 284                 mask_keyup   = 0x004000;
 285                 polling      = 50; // ms
 286                 break;
 287         case SAA7134_BOARD_GOTVIEW_7135:
 288                 ir_codes     = ir_codes_gotview7135;
 289                 mask_keycode = 0x0003EC;
 290                 mask_keyup   = 0x008000;
 291                 mask_keydown = 0x000010;
 292                 polling      = 50; // ms
 293                 break;
 294         case SAA7134_BOARD_VIDEOMATE_TV_PVR:
 295         case SAA7134_BOARD_VIDEOMATE_GOLD_PLUS:
 296         case SAA7134_BOARD_VIDEOMATE_TV_GOLD_PLUSII:
 297                 ir_codes     = ir_codes_videomate_tv_pvr;
 298                 mask_keycode = 0x00003F;
 299                 mask_keyup   = 0x400000;
 300                 polling      = 50; // ms
 301                 break;
 302         case SAA7134_BOARD_PROTEUS_2309:
 303                 ir_codes     = ir_codes_proteus_2309;
 304                 mask_keycode = 0x00007F;
 305                 mask_keyup   = 0x000080;
 306                 polling      = 50; // ms
 307                 break;
 308         case SAA7134_BOARD_VIDEOMATE_DVBT_300:
 309         case SAA7134_BOARD_VIDEOMATE_DVBT_200:
 310                 ir_codes     = ir_codes_videomate_tv_pvr;
 311                 mask_keycode = 0x003F00;
 312                 mask_keyup   = 0x040000;
 313                 break;
 314         case SAA7134_BOARD_FLYDVBT_LR301:
 315         case SAA7134_BOARD_FLYDVBTDUO:
 316                 ir_codes     = ir_codes_flydvb;
 317                 mask_keycode = 0x0001F00;
 318                 mask_keydown = 0x0040000;
 319                 break;
 320         case SAA7134_BOARD_ASUSTeK_P7131_DUAL:
 321         case SAA7134_BOARD_ASUSTeK_P7131_HYBRID_LNA:
 322                 ir_codes     = ir_codes_asus_pc39;
 323                 mask_keydown = 0x0040000;
 324                 rc5_gpio = 1;
 325                 break;
 326         case SAA7134_BOARD_ENCORE_ENLTV:
 327         case SAA7134_BOARD_ENCORE_ENLTV_FM:
 328                 ir_codes     = ir_codes_encore_enltv;
 329                 mask_keycode = 0x00007f;
 330                 mask_keyup   = 0x040000;
 331                 polling      = 50; // ms
 332                 break;
 333         case SAA7134_BOARD_10MOONSTVMASTER3:
 334                 ir_codes     = ir_codes_encore_enltv;
 335                 mask_keycode = 0x5f80000;
 336                 mask_keyup   = 0x8000000;
 337                 polling      = 50; //ms
 338                 break;
 339         }
 340         if (NULL == ir_codes) {
 341                 printk("%s: Oops: IR config error [card=%d]\n",
 342                        dev->name, dev->board);
 343                 return -ENODEV;
 344         }
 345
 346         ir = kzalloc(sizeof(*ir), GFP_KERNEL);
 347         input_dev = input_allocate_device();
 348         if (!ir || !input_dev) {
 349                 err = -ENOMEM;
 350                 goto err_out_free;
 351         }
 352
 353         ir->dev = input_dev;
 354
 355         /* init hardware-specific stuff */
 356         ir->mask_keycode = mask_keycode;
 357         ir->mask_keydown = mask_keydown;
 358         ir->mask_keyup   = mask_keyup;
 359         ir->polling      = polling;
 360         ir->rc5_gpio     = rc5_gpio;
 361
 362         /* init input device */
 363         snprintf(ir->name, sizeof(ir->name), "saa7134 IR (%s)",
 364                  saa7134_boards[dev->board].name);
 365         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
 366                  pci_name(dev->pci));
 367
 368         ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
 369         input_dev->name = ir->name;
 370         input_dev->phys = ir->phys;
 371         input_dev->id.bustype = BUS_PCI;
 372         input_dev->id.version = 1;
 373         if (dev->pci->subsystem_vendor) {
 374                 input_dev->id.vendor  = dev->pci->subsystem_vendor;
 375                 input_dev->id.product = dev->pci->subsystem_device;
 376         } else {
 377                 input_dev->id.vendor  = dev->pci->vendor;
 378                 input_dev->id.product = dev->pci->device;
 379         }
 380         input_dev->cdev.dev = &dev->pci->dev;
 381
 382         dev->remote = ir;
 383         saa7134_ir_start(dev, ir);
 384
 385         err = input_register_device(ir->dev);
 386         if (err)
 387                 goto err_out_stop;
 388
 389         return 0;
 390
 391  err_out_stop:
 392         saa7134_ir_stop(dev);
 393         dev->remote = NULL;
 394  err_out_free:
 395         input_free_device(input_dev);
 396         kfree(ir);
 397         return err;
 398 }
 399
 400 void saa7134_input_fini(struct saa7134_dev *dev)
 401 {
 402         if (NULL == dev->remote)
 403                 return;
 404
 405         saa7134_ir_stop(dev);
 406         input_unregister_device(dev->remote->dev);
 407         kfree(dev->remote);
 408         dev->remote = NULL;
 409 }
 410
 411 void saa7134_set_i2c_ir(struct saa7134_dev *dev, struct IR_i2c *ir)
 412 {
 413         if (disable_ir) {
 414                 dprintk("Found supported i2c remote, but IR has been disabled\n");
 415                 ir->get_key=NULL;
 416                 return;
 417         }
 418
 419         switch (dev->board) {
 420         case SAA7134_BOARD_PINNACLE_PCTV_110i:
 421         case SAA7134_BOARD_PINNACLE_PCTV_310i:
 422                 snprintf(ir->c.name, sizeof(ir->c.name), "Pinnacle PCTV");
 423                 if (pinnacle_remote == 0) {
 424                         ir->get_key   = get_key_pinnacle_color;
 425                         ir->ir_codes = ir_codes_pinnacle_color;
 426                 } else {
 427                         ir->get_key   = get_key_pinnacle_grey;
 428                         ir->ir_codes = ir_codes_pinnacle_grey;
 429                 }
 430                 break;
 431         case SAA7134_BOARD_UPMOST_PURPLE_TV:
 432                 snprintf(ir->c.name, sizeof(ir->c.name), "Purple TV");
 433                 ir->get_key   = get_key_purpletv;
 434                 ir->ir_codes  = ir_codes_purpletv;
 435                 break;
 436         case SAA7134_BOARD_HAUPPAUGE_HVR1110:
 437                 snprintf(ir->c.name, sizeof(ir->c.name), "HVR 1110");
 438                 ir->get_key   = get_key_hvr1110;
 439                 ir->ir_codes  = ir_codes_hauppauge_new;
 440                 break;
 441         default:
 442                 dprintk("Shouldn't get here: Unknown board %x for I2C IR?\n",dev->board);
 443                 break;
 444         }
 445
 446 }
 447
 448 static int saa7134_rc5_irq(struct saa7134_dev *dev)
 449 {
 450         struct card_ir *ir = dev->remote;
 451         struct timeval tv;
 452         u32 gap;
 453         unsigned long current_jiffies, timeout;
 454
 455         /* get time of bit */
 456         current_jiffies = jiffies;
 457         do_gettimeofday(&tv);
 458
 459         /* avoid overflow with gap >1s */
 460         if (tv.tv_sec - ir->base_time.tv_sec > 1) {
 461                 gap = 200000;
 462         } else {
 463                 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
 464                     tv.tv_usec - ir->base_time.tv_usec;
 465         }
 466
 467         /* active code => add bit */
 468         if (ir->active) {
 469                 /* only if in the code (otherwise spurious IRQ or timer
 470                    late) */
 471                 if (ir->last_bit < 28) {
 472                         ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
 473                             ir_rc5_remote_gap;
 474                         ir->code |= 1 << ir->last_bit;
 475                 }
 476                 /* starting new code */
 477         } else {
 478                 ir->active = 1;
 479                 ir->code = 0;
 480                 ir->base_time = tv;
 481                 ir->last_bit = 0;
 482
 483                 timeout = current_jiffies + (500 + 30 * HZ) / 1000;
 484                 mod_timer(&ir->timer_end, timeout);
 485         }
 486
 487         return 1;
 488 }
 489
 490 /* ----------------------------------------------------------------------
 491  * Local variables:
 492  * c-basic-offset: 8
 493  * End:
 494  */