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         unsigned long timeout;
 159
 160         build_key(dev);
 161         timeout = jiffies + (ir->polling * HZ / 1000);
 162         mod_timer(&ir->timer, timeout);
 163 }
 164
 165 static void saa7134_ir_start(struct saa7134_dev *dev, struct card_ir *ir)
 166 {
 167         if (ir->polling) {
 168                 init_timer(&ir->timer);
 169                 ir->timer.function = saa7134_input_timer;
 170                 ir->timer.data     = (unsigned long)dev;
 171                 ir->timer.expires  = jiffies + HZ;
 172                 add_timer(&ir->timer);
 173         } else if (ir->rc5_gpio) {
 174                 /* set timer_end for code completion */
 175                 init_timer(&ir->timer_end);
 176                 ir->timer_end.function = ir_rc5_timer_end;
 177                 ir->timer_end.data = (unsigned long)ir;
 178                 init_timer(&ir->timer_keyup);
 179                 ir->timer_keyup.function = ir_rc5_timer_keyup;
 180                 ir->timer_keyup.data = (unsigned long)ir;
 181                 ir->shift_by = 2;
 182                 ir->start = 0x2;
 183                 ir->addr = 0x17;
 184                 ir->rc5_key_timeout = ir_rc5_key_timeout;
 185                 ir->rc5_remote_gap = ir_rc5_remote_gap;
 186         }
 187 }
 188
 189 static void saa7134_ir_stop(struct saa7134_dev *dev)
 190 {
 191         if (dev->remote->polling)
 192                 del_timer_sync(&dev->remote->timer);
 193 }
 194
 195 int saa7134_input_init1(struct saa7134_dev *dev)
 196 {
 197         struct card_ir *ir;
 198         struct input_dev *input_dev;
 199         IR_KEYTAB_TYPE *ir_codes = NULL;
 200         u32 mask_keycode = 0;
 201         u32 mask_keydown = 0;
 202         u32 mask_keyup   = 0;
 203         int polling      = 0;
 204         int rc5_gpio     = 0;
 205         int ir_type      = IR_TYPE_OTHER;
 206         int err;
 207
 208         if (dev->has_remote != SAA7134_REMOTE_GPIO)
 209                 return -ENODEV;
 210         if (disable_ir)
 211                 return -ENODEV;
 212
 213         /* detect & configure */
 214         switch (dev->board) {
 215         case SAA7134_BOARD_FLYVIDEO2000:
 216         case SAA7134_BOARD_FLYVIDEO3000:
 217         case SAA7134_BOARD_FLYTVPLATINUM_FM:
 218         case SAA7134_BOARD_FLYTVPLATINUM_MINI2:
 219                 ir_codes     = ir_codes_flyvideo;
 220                 mask_keycode = 0xEC00000;
 221                 mask_keydown = 0x0040000;
 222                 break;
 223         case SAA7134_BOARD_CINERGY400:
 224         case SAA7134_BOARD_CINERGY600:
 225         case SAA7134_BOARD_CINERGY600_MK3:
 226                 ir_codes     = ir_codes_cinergy;
 227                 mask_keycode = 0x00003f;
 228                 mask_keyup   = 0x040000;
 229                 break;
 230         case SAA7134_BOARD_ECS_TVP3XP:
 231         case SAA7134_BOARD_ECS_TVP3XP_4CB5:
 232                 ir_codes     = ir_codes_eztv;
 233                 mask_keycode = 0x00017c;
 234                 mask_keyup   = 0x000002;
 235                 polling      = 50; // ms
 236                 break;
 237         case SAA7134_BOARD_KWORLD_XPERT:
 238         case SAA7134_BOARD_AVACSSMARTTV:
 239                 ir_codes     = ir_codes_pixelview;
 240                 mask_keycode = 0x00001F;
 241                 mask_keyup   = 0x000020;
 242                 polling      = 50; // ms
 243                 break;
 244         case SAA7134_BOARD_MD2819:
 245         case SAA7134_BOARD_KWORLD_VSTREAM_XPERT:
 246         case SAA7134_BOARD_AVERMEDIA_305:
 247         case SAA7134_BOARD_AVERMEDIA_307:
 248         case SAA7134_BOARD_AVERMEDIA_STUDIO_305:
 249         case SAA7134_BOARD_AVERMEDIA_STUDIO_307:
 250         case SAA7134_BOARD_AVERMEDIA_STUDIO_507:
 251         case SAA7134_BOARD_AVERMEDIA_GO_007_FM:
 252                 ir_codes     = ir_codes_avermedia;
 253                 mask_keycode = 0x0007C8;
 254                 mask_keydown = 0x000010;
 255                 polling      = 50; // ms
 256                 /* Set GPIO pin2 to high to enable the IR controller */
 257                 saa_setb(SAA7134_GPIO_GPMODE0, 0x4);
 258                 saa_setb(SAA7134_GPIO_GPSTATUS0, 0x4);
 259                 break;
 260         case SAA7134_BOARD_AVERMEDIA_777:
 261         case SAA7134_BOARD_AVERMEDIA_A16AR:
 262                 ir_codes     = ir_codes_avermedia;
 263                 mask_keycode = 0x02F200;
 264                 mask_keydown = 0x000400;
 265                 polling      = 50; // ms
 266                 /* Without this we won't receive key up events */
 267                 saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
 268                 saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
 269                 break;
 270         case SAA7134_BOARD_KWORLD_TERMINATOR:
 271                 ir_codes     = ir_codes_pixelview;
 272                 mask_keycode = 0x00001f;
 273                 mask_keyup   = 0x000060;
 274                 polling      = 50; // ms
 275                 break;
 276         case SAA7134_BOARD_MANLI_MTV001:
 277         case SAA7134_BOARD_MANLI_MTV002:
 278         case SAA7134_BOARD_BEHOLD_409FM:
 279                 ir_codes     = ir_codes_manli;
 280                 mask_keycode = 0x001f00;
 281                 mask_keyup   = 0x004000;
 282                 polling      = 50; // ms
 283                 break;
 284         case SAA7134_BOARD_SEDNA_PC_TV_CARDBUS:
 285                 ir_codes     = ir_codes_pctv_sedna;
 286                 mask_keycode = 0x001f00;
 287                 mask_keyup   = 0x004000;
 288                 polling      = 50; // ms
 289                 break;
 290         case SAA7134_BOARD_GOTVIEW_7135:
 291                 ir_codes     = ir_codes_gotview7135;
 292                 mask_keycode = 0x0003EC;
 293                 mask_keyup   = 0x008000;
 294                 mask_keydown = 0x000010;
 295                 polling      = 50; // ms
 296                 break;
 297         case SAA7134_BOARD_VIDEOMATE_TV_PVR:
 298         case SAA7134_BOARD_VIDEOMATE_GOLD_PLUS:
 299         case SAA7134_BOARD_VIDEOMATE_TV_GOLD_PLUSII:
 300                 ir_codes     = ir_codes_videomate_tv_pvr;
 301                 mask_keycode = 0x00003F;
 302                 mask_keyup   = 0x400000;
 303                 polling      = 50; // ms
 304                 break;
 305         case SAA7134_BOARD_PROTEUS_2309:
 306                 ir_codes     = ir_codes_proteus_2309;
 307                 mask_keycode = 0x00007F;
 308                 mask_keyup   = 0x000080;
 309                 polling      = 50; // ms
 310                 break;
 311         case SAA7134_BOARD_VIDEOMATE_DVBT_300:
 312         case SAA7134_BOARD_VIDEOMATE_DVBT_200:
 313                 ir_codes     = ir_codes_videomate_tv_pvr;
 314                 mask_keycode = 0x003F00;
 315                 mask_keyup   = 0x040000;
 316                 break;
 317         case SAA7134_BOARD_FLYDVBT_LR301:
 318         case SAA7134_BOARD_FLYDVBTDUO:
 319                 ir_codes     = ir_codes_flydvb;
 320                 mask_keycode = 0x0001F00;
 321                 mask_keydown = 0x0040000;
 322                 break;
 323         case SAA7134_BOARD_ASUSTeK_P7131_DUAL:
 324                 ir_codes     = ir_codes_asus_pc39;
 325                 mask_keydown = 0x0040000;
 326                 rc5_gpio = 1;
 327                 break;
 328         case SAA7134_BOARD_ENCORE_ENLTV:
 329         case SAA7134_BOARD_ENCORE_ENLTV_FM:
 330                 ir_codes     = ir_codes_encore_enltv;
 331                 mask_keycode = 0x00007f;
 332                 mask_keyup   = 0x040000;
 333                 polling      = 50; // ms
 334                 break;
 335         }
 336         if (NULL == ir_codes) {
 337                 printk("%s: Oops: IR config error [card=%d]\n",
 338                        dev->name, dev->board);
 339                 return -ENODEV;
 340         }
 341
 342         ir = kzalloc(sizeof(*ir), GFP_KERNEL);
 343         input_dev = input_allocate_device();
 344         if (!ir || !input_dev) {
 345                 err = -ENOMEM;
 346                 goto err_out_free;
 347         }
 348
 349         ir->dev = input_dev;
 350
 351         /* init hardware-specific stuff */
 352         ir->mask_keycode = mask_keycode;
 353         ir->mask_keydown = mask_keydown;
 354         ir->mask_keyup   = mask_keyup;
 355         ir->polling      = polling;
 356         ir->rc5_gpio     = rc5_gpio;
 357
 358         /* init input device */
 359         snprintf(ir->name, sizeof(ir->name), "saa7134 IR (%s)",
 360                  saa7134_boards[dev->board].name);
 361         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
 362                  pci_name(dev->pci));
 363
 364         ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
 365         input_dev->name = ir->name;
 366         input_dev->phys = ir->phys;
 367         input_dev->id.bustype = BUS_PCI;
 368         input_dev->id.version = 1;
 369         if (dev->pci->subsystem_vendor) {
 370                 input_dev->id.vendor  = dev->pci->subsystem_vendor;
 371                 input_dev->id.product = dev->pci->subsystem_device;
 372         } else {
 373                 input_dev->id.vendor  = dev->pci->vendor;
 374                 input_dev->id.product = dev->pci->device;
 375         }
 376         input_dev->cdev.dev = &dev->pci->dev;
 377
 378         dev->remote = ir;
 379         saa7134_ir_start(dev, ir);
 380
 381         err = input_register_device(ir->dev);
 382         if (err)
 383                 goto err_out_stop;
 384
 385         return 0;
 386
 387  err_out_stop:
 388         saa7134_ir_stop(dev);
 389         dev->remote = NULL;
 390  err_out_free:
 391         input_free_device(input_dev);
 392         kfree(ir);
 393         return err;
 394 }
 395
 396 void saa7134_input_fini(struct saa7134_dev *dev)
 397 {
 398         if (NULL == dev->remote)
 399                 return;
 400
 401         saa7134_ir_stop(dev);
 402         input_unregister_device(dev->remote->dev);
 403         kfree(dev->remote);
 404         dev->remote = NULL;
 405 }
 406
 407 void saa7134_set_i2c_ir(struct saa7134_dev *dev, struct IR_i2c *ir)
 408 {
 409         if (disable_ir) {
 410                 dprintk("Found supported i2c remote, but IR has been disabled\n");
 411                 ir->get_key=NULL;
 412                 return;
 413         }
 414
 415         switch (dev->board) {
 416         case SAA7134_BOARD_PINNACLE_PCTV_110i:
 417         case SAA7134_BOARD_PINNACLE_PCTV_310i:
 418                 snprintf(ir->c.name, sizeof(ir->c.name), "Pinnacle PCTV");
 419                 if (pinnacle_remote == 0) {
 420                         ir->get_key   = get_key_pinnacle_color;
 421                         ir->ir_codes = ir_codes_pinnacle_color;
 422                 } else {
 423                         ir->get_key   = get_key_pinnacle_grey;
 424                         ir->ir_codes = ir_codes_pinnacle_grey;
 425                 }
 426                 break;
 427         case SAA7134_BOARD_UPMOST_PURPLE_TV:
 428                 snprintf(ir->c.name, sizeof(ir->c.name), "Purple TV");
 429                 ir->get_key   = get_key_purpletv;
 430                 ir->ir_codes  = ir_codes_purpletv;
 431                 break;
 432         case SAA7134_BOARD_HAUPPAUGE_HVR1110:
 433                 snprintf(ir->c.name, sizeof(ir->c.name), "HVR 1110");
 434                 ir->get_key   = get_key_hvr1110;
 435                 ir->ir_codes  = ir_codes_hauppauge_new;
 436                 break;
 437         default:
 438                 dprintk("Shouldn't get here: Unknown board %x for I2C IR?\n",dev->board);
 439                 break;
 440         }
 441
 442 }
 443
 444 static int saa7134_rc5_irq(struct saa7134_dev *dev)
 445 {
 446         struct card_ir *ir = dev->remote;
 447         struct timeval tv;
 448         u32 gap;
 449         unsigned long current_jiffies, timeout;
 450
 451         /* get time of bit */
 452         current_jiffies = jiffies;
 453         do_gettimeofday(&tv);
 454
 455         /* avoid overflow with gap >1s */
 456         if (tv.tv_sec - ir->base_time.tv_sec > 1) {
 457                 gap = 200000;
 458         } else {
 459                 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
 460                     tv.tv_usec - ir->base_time.tv_usec;
 461         }
 462
 463         /* active code => add bit */
 464         if (ir->active) {
 465                 /* only if in the code (otherwise spurious IRQ or timer
 466                    late) */
 467                 if (ir->last_bit < 28) {
 468                         ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
 469                             ir_rc5_remote_gap;
 470                         ir->code |= 1 << ir->last_bit;
 471                 }
 472                 /* starting new code */
 473         } else {
 474                 ir->active = 1;
 475                 ir->code = 0;
 476                 ir->base_time = tv;
 477                 ir->last_bit = 0;
 478
 479                 timeout = current_jiffies + (500 + 30 * HZ) / 1000;
 480                 mod_timer(&ir->timer_end, timeout);
 481         }
 482
 483         return 1;
 484 }
 485
 486 /* ----------------------------------------------------------------------
 487  * Local variables:
 488  * c-basic-offset: 8
 489  * End:
 490  */