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

   1 /*
   2  * handle saa7134 IR remotes via linux kernel input layer.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  17  *
  18  */
  19
  20 #include <linux/module.h>
  21 #include <linux/init.h>
  22 #include <linux/delay.h>
  23 #include <linux/sched.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/input.h>
  26
  27 #include "saa7134-reg.h"
  28 #include "saa7134.h"
  29
  30 static unsigned int disable_ir = 0;
  31 MODULE_PARM(disable_ir,"i");
  32 MODULE_PARM_DESC(disable_ir,"disable infrared remote support");
  33
  34 static unsigned int ir_debug = 0;
  35 MODULE_PARM(ir_debug,"i");
  36 MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
  37
  38 #define dprintk(fmt, arg...)    if (ir_debug) \
  39         printk(KERN_DEBUG "%s/ir: " fmt, dev->name , ## arg)
  40
  41 /* ---------------------------------------------------------------------- */
  42
  43 static IR_KEYTAB_TYPE flyvideo_codes[IR_KEYTAB_SIZE] = {
  44         [   15 ] = KEY_KP0,
  45         [    3 ] = KEY_KP1,
  46         [    4 ] = KEY_KP2,
  47         [    5 ] = KEY_KP3,
  48         [    7 ] = KEY_KP4,
  49         [    8 ] = KEY_KP5,
  50         [    9 ] = KEY_KP6,
  51         [   11 ] = KEY_KP7,
  52         [   12 ] = KEY_KP8,
  53         [   13 ] = KEY_KP9,
  54
  55         [   14 ] = KEY_TUNER,        // Air/Cable
  56         [   17 ] = KEY_VIDEO,        // Video
  57         [   21 ] = KEY_AUDIO,        // Audio
  58         [    0 ] = KEY_POWER,        // Pover
  59         [    2 ] = KEY_ZOOM,         // Fullscreen
  60         [   27 ] = KEY_MUTE,         // Mute
  61         [   20 ] = KEY_VOLUMEUP,
  62         [   23 ] = KEY_VOLUMEDOWN,
  63         [   18 ] = KEY_CHANNELUP,    // Channel +
  64         [   19 ] = KEY_CHANNELDOWN,  // Channel -
  65         [    6 ] = KEY_AGAIN,        // Recal
  66         [   16 ] = KEY_KPENTER,      // Enter
  67
  68 #if 1 /* FIXME */
  69         [   26 ] = KEY_F22,          // Stereo
  70         [   24 ] = KEY_EDIT,         // AV Source
  71 #endif
  72 };
  73
  74 static IR_KEYTAB_TYPE cinergy_codes[IR_KEYTAB_SIZE] = {
  75         [    0 ] = KEY_KP0,
  76         [    1 ] = KEY_KP1,
  77         [    2 ] = KEY_KP2,
  78         [    3 ] = KEY_KP3,
  79         [    4 ] = KEY_KP4,
  80         [    5 ] = KEY_KP5,
  81         [    6 ] = KEY_KP6,
  82         [    7 ] = KEY_KP7,
  83         [    8 ] = KEY_KP8,
  84         [    9 ] = KEY_KP9,
  85
  86         [ 0x0a ] = KEY_POWER,
  87         [ 0x0b ] = KEY_PROG1,           // app
  88         [ 0x0c ] = KEY_ZOOM,            // zoom/fullscreen
  89         [ 0x0d ] = KEY_CHANNELUP,       // channel
  90         [ 0x0e ] = KEY_CHANNELDOWN,     // channel-
  91         [ 0x0f ] = KEY_VOLUMEUP,
  92         [ 0x10 ] = KEY_VOLUMEDOWN,
  93         [ 0x11 ] = KEY_TUNER,           // AV
  94         [ 0x12 ] = KEY_NUMLOCK,         // -/--
  95         [ 0x13 ] = KEY_AUDIO,           // audio
  96         [ 0x14 ] = KEY_MUTE,
  97         [ 0x15 ] = KEY_UP,
  98         [ 0x16 ] = KEY_DOWN,
  99         [ 0x17 ] = KEY_LEFT,
 100         [ 0x18 ] = KEY_RIGHT,
 101         [ 0x19 ] = BTN_LEFT,
 102         [ 0x1a ] = BTN_RIGHT,
 103         [ 0x1b ] = KEY_WWW,             // text
 104         [ 0x1c ] = KEY_REWIND,
 105         [ 0x1d ] = KEY_FORWARD,
 106         [ 0x1e ] = KEY_RECORD,
 107         [ 0x1f ] = KEY_PLAY,
 108         [ 0x20 ] = KEY_PREVIOUSSONG,
 109         [ 0x21 ] = KEY_NEXTSONG,
 110         [ 0x22 ] = KEY_PAUSE,
 111         [ 0x23 ] = KEY_STOP,
 112 };
 113
 114 /* Alfons Geser <a.geser@cox.net>
 115  * updates from Job D. R. Borges <jobdrb@ig.com.br> */
 116 static IR_KEYTAB_TYPE eztv_codes[IR_KEYTAB_SIZE] = {
 117         [ 18 ] = KEY_POWER,
 118         [  1 ] = KEY_TV,             // DVR
 119         [ 21 ] = KEY_DVD,            // DVD
 120         [ 23 ] = KEY_AUDIO,          // music
 121                                      // DVR mode / DVD mode / music mode
 122
 123         [ 27 ] = KEY_MUTE,           // mute
 124         [  2 ] = KEY_LANGUAGE,       // MTS/SAP / audio / autoseek
 125         [ 30 ] = KEY_SUBTITLE,       // closed captioning / subtitle / seek
 126         [ 22 ] = KEY_ZOOM,           // full screen
 127         [ 28 ] = KEY_VIDEO,          // video source / eject / delall
 128         [ 29 ] = KEY_RESTART,        // playback / angle / del
 129         [ 47 ] = KEY_SEARCH,         // scan / menu / playlist
 130         [ 48 ] = KEY_CHANNEL,        // CH surfing / bookmark / memo
 131
 132         [ 49 ] = KEY_HELP,           // help
 133         [ 50 ] = KEY_MODE,           // num/memo
 134         [ 51 ] = KEY_ESC,            // cancel
 135
 136         [ 12 ] = KEY_UP,             // up
 137         [ 16 ] = KEY_DOWN,           // down
 138         [  8 ] = KEY_LEFT,           // left
 139         [  4 ] = KEY_RIGHT,          // right
 140         [  3 ] = KEY_SELECT,         // select
 141
 142         [ 31 ] = KEY_REWIND,         // rewind
 143         [ 32 ] = KEY_PLAYPAUSE,      // play/pause
 144         [ 41 ] = KEY_FORWARD,        // forward
 145         [ 20 ] = KEY_AGAIN,          // repeat
 146         [ 43 ] = KEY_RECORD,         // recording
 147         [ 44 ] = KEY_STOP,           // stop
 148         [ 45 ] = KEY_PLAY,           // play
 149         [ 46 ] = KEY_SHUFFLE,        // snapshot / shuffle
 150
 151         [  0 ] = KEY_KP0,
 152         [  5 ] = KEY_KP1,
 153         [  6 ] = KEY_KP2,
 154         [  7 ] = KEY_KP3,
 155         [  9 ] = KEY_KP4,
 156         [ 10 ] = KEY_KP5,
 157         [ 11 ] = KEY_KP6,
 158         [ 13 ] = KEY_KP7,
 159         [ 14 ] = KEY_KP8,
 160         [ 15 ] = KEY_KP9,
 161
 162         [ 42 ] = KEY_VOLUMEUP,
 163         [ 17 ] = KEY_VOLUMEDOWN,
 164         [ 24 ] = KEY_CHANNELUP,      // CH.tracking up
 165         [ 25 ] = KEY_CHANNELDOWN,    // CH.tracking down
 166
 167         [ 19 ] = KEY_KPENTER,        // enter
 168         [ 33 ] = KEY_KPDOT,          // . (decimal dot)
 169 };
 170
 171 static IR_KEYTAB_TYPE avacssmart_codes[IR_KEYTAB_SIZE] = {
 172         [ 30 ] = KEY_POWER,             // power
 173         [ 28 ] = KEY_SEARCH,            // scan
 174         [  7 ] = KEY_SELECT,            // source
 175
 176         [ 22 ] = KEY_VOLUMEUP,
 177         [ 20 ] = KEY_VOLUMEDOWN,
 178         [ 31 ] = KEY_CHANNELUP,
 179         [ 23 ] = KEY_CHANNELDOWN,
 180         [ 24 ] = KEY_MUTE,
 181
 182         [  2 ] = KEY_KP0,
 183         [  1 ] = KEY_KP1,
 184         [ 11 ] = KEY_KP2,
 185         [ 27 ] = KEY_KP3,
 186         [  5 ] = KEY_KP4,
 187         [  9 ] = KEY_KP5,
 188         [ 21 ] = KEY_KP6,
 189         [  6 ] = KEY_KP7,
 190         [ 10 ] = KEY_KP8,
 191         [ 18 ] = KEY_KP9,
 192         [ 16 ] = KEY_KPDOT,
 193
 194         [  3 ] = KEY_TUNER,             // tv/fm
 195         [  4 ] = KEY_REWIND,            // fm tuning left or function left
 196         [ 12 ] = KEY_FORWARD,           // fm tuning right or function right
 197
 198         [  0 ] = KEY_RECORD,
 199         [  8 ] = KEY_STOP,
 200         [ 17 ] = KEY_PLAY,
 201
 202         [ 25 ] = KEY_ZOOM,
 203         [ 14 ] = KEY_MENU,              // function
 204         [ 19 ] = KEY_AGAIN,             // recall
 205         [ 29 ] = KEY_RESTART,           // reset
 206
 207 // FIXME
 208         [ 13 ] = KEY_F21,               // mts
 209         [ 15 ] = KEY_F22,               // min
 210         [ 26 ] = KEY_F23,               // freeze
 211 };
 212 /* ---------------------------------------------------------------------- */
 213
 214 static int build_key(struct saa7134_dev *dev)
 215 {
 216         struct saa7134_ir *ir = dev->remote;
 217         u32 gpio, data;
 218
 219         /* rising SAA7134_GPIO_GPRESCAN reads the status */
 220         saa_clearb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
 221         saa_setb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
 222
 223         gpio = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2);
 224         if (ir->polling) {
 225                 if (ir->last_gpio == gpio)
 226                         return 0;
 227                 ir->last_gpio = gpio;
 228         }
 229
 230         data = ir_extract_bits(gpio, ir->mask_keycode);
 231         dprintk("build_key gpio=0x%x mask=0x%x data=%d\n",
 232                 gpio, ir->mask_keycode, data);
 233
 234         if ((ir->mask_keydown  &&  (0 != (gpio & ir->mask_keydown))) ||
 235             (ir->mask_keyup    &&  (0 == (gpio & ir->mask_keyup)))) {
 236                 ir_input_keydown(&ir->dev,&ir->ir,data,data);
 237         } else {
 238                 ir_input_nokey(&ir->dev,&ir->ir);
 239         }
 240         return 0;
 241 }
 242
 243 /* ---------------------------------------------------------------------- */
 244
 245 void saa7134_input_irq(struct saa7134_dev *dev)
 246 {
 247         struct saa7134_ir *ir = dev->remote;
 248
 249         if (!ir->polling)
 250                 build_key(dev);
 251 }
 252
 253 static void saa7134_input_timer(unsigned long data)
 254 {
 255         struct saa7134_dev *dev = (struct saa7134_dev*)data;
 256         struct saa7134_ir *ir = dev->remote;
 257         unsigned long timeout;
 258
 259         build_key(dev);
 260         timeout = jiffies + (ir->polling * HZ / 1000);
 261         mod_timer(&ir->timer, timeout);
 262 }
 263
 264 int saa7134_input_init1(struct saa7134_dev *dev)
 265 {
 266         struct saa7134_ir *ir;
 267         IR_KEYTAB_TYPE *ir_codes = NULL;
 268         u32 mask_keycode = 0;
 269         u32 mask_keydown = 0;
 270         u32 mask_keyup   = 0;
 271         int polling      = 0;
 272         int ir_type      = IR_TYPE_OTHER;
 273
 274         if (!dev->has_remote)
 275                 return -ENODEV;
 276         if (disable_ir)
 277                 return -ENODEV;
 278
 279         /* detect & configure */
 280         switch (dev->board) {
 281         case SAA7134_BOARD_FLYVIDEO2000:
 282         case SAA7134_BOARD_FLYVIDEO3000:
 283                 ir_codes     = flyvideo_codes;
 284                 mask_keycode = 0xEC00000;
 285                 mask_keydown = 0x0040000;
 286                 break;
 287         case SAA7134_BOARD_CINERGY400:
 288         case SAA7134_BOARD_CINERGY600:
 289                 ir_codes     = cinergy_codes;
 290                 mask_keycode = 0x00003f;
 291                 mask_keyup   = 0x040000;
 292                 break;
 293         case SAA7134_BOARD_ECS_TVP3XP:
 294         case SAA7134_BOARD_ECS_TVP3XP_4CB5:
 295                 ir_codes     = eztv_codes;
 296                 mask_keycode = 0x00017c;
 297                 mask_keyup   = 0x000002;
 298                 polling      = 50; // ms
 299                 break;
 300         case SAA7134_BOARD_AVACSSMARTTV:
 301                 ir_codes     = avacssmart_codes;
 302                 mask_keycode = 0x00001F;
 303                 mask_keyup   = 0x000020;
 304                 polling      = 50; // ms
 305                 break;
 306         }
 307         if (NULL == ir_codes) {
 308                 printk("%s: Oops: IR config error [card=%d]\n",
 309                        dev->name, dev->board);
 310                 return -ENODEV;
 311         }
 312
 313         ir = kmalloc(sizeof(*ir),GFP_KERNEL);
 314         if (NULL == ir)
 315                 return -ENOMEM;
 316         memset(ir,0,sizeof(*ir));
 317
 318         /* init hardware-specific stuff */
 319         ir->mask_keycode = mask_keycode;
 320         ir->mask_keydown = mask_keydown;
 321         ir->mask_keyup   = mask_keyup;
 322         ir->polling      = polling;
 323
 324         /* init input device */
 325         snprintf(ir->name, sizeof(ir->name), "saa7134 IR (%s)",
 326                  saa7134_boards[dev->board].name);
 327         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
 328                  pci_name(dev->pci));
 329
 330         ir_input_init(&ir->dev, &ir->ir, ir_type, ir_codes);
 331         ir->dev.name = ir->name;
 332         ir->dev.phys = ir->phys;
 333         ir->dev.id.bustype = BUS_PCI;
 334         ir->dev.id.version = 1;
 335         if (dev->pci->subsystem_vendor) {
 336                 ir->dev.id.vendor  = dev->pci->subsystem_vendor;
 337                 ir->dev.id.product = dev->pci->subsystem_device;
 338         } else {
 339                 ir->dev.id.vendor  = dev->pci->vendor;
 340                 ir->dev.id.product = dev->pci->device;
 341         }
 342
 343         /* all done */
 344         dev->remote = ir;
 345         if (ir->polling) {
 346                 init_timer(&ir->timer);
 347                 ir->timer.function = saa7134_input_timer;
 348                 ir->timer.data     = (unsigned long)dev;
 349                 ir->timer.expires  = jiffies + HZ;
 350                 add_timer(&ir->timer);
 351         }
 352
 353         input_register_device(&dev->remote->dev);
 354         printk("%s: registered input device for IR\n",dev->name);
 355         return 0;
 356 }
 357
 358 void saa7134_input_fini(struct saa7134_dev *dev)
 359 {
 360         if (NULL == dev->remote)
 361                 return;
 362
 363         input_unregister_device(&dev->remote->dev);
 364         if (dev->remote->polling)
 365                 del_timer_sync(&dev->remote->timer);
 366         kfree(dev->remote);
 367         dev->remote = NULL;
 368 }
 369
 370 /* ----------------------------------------------------------------------
 371  * Local variables:
 372  * c-basic-offset: 8
 373  * End:
 374  */