drivers/media/video/ir-kbd-gpio.c

   1 /*
   2  * $Id: ir-kbd-gpio.c,v 1.12 2005/02/22 12:28:40 kraxel Exp $
   3  *
   4  * Copyright (c) 2003 Gerd Knorr
   5  * Copyright (c) 2003 Pavel Machek
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/moduleparam.h>
  24 #include <linux/init.h>
  25 #include <linux/delay.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/input.h>
  28 #include <linux/pci.h>
  29
  30 #include <media/ir-common.h>
  31
  32 #include "bttv.h"
  33
  34 /* ---------------------------------------------------------------------- */
  35
  36 static IR_KEYTAB_TYPE ir_codes_avermedia[IR_KEYTAB_SIZE] = {
  37         [ 34 ] = KEY_KP0,
  38         [ 40 ] = KEY_KP1,
  39         [ 24 ] = KEY_KP2,
  40         [ 56 ] = KEY_KP3,
  41         [ 36 ] = KEY_KP4,
  42         [ 20 ] = KEY_KP5,
  43         [ 52 ] = KEY_KP6,
  44         [ 44 ] = KEY_KP7,
  45         [ 28 ] = KEY_KP8,
  46         [ 60 ] = KEY_KP9,
  47
  48         [ 48 ] = KEY_EJECTCD,     // Unmarked on my controller
  49         [  0 ] = KEY_POWER,
  50         [ 18 ] = BTN_LEFT,        // DISPLAY/L
  51         [ 50 ] = BTN_RIGHT,       // LOOP/R
  52         [ 10 ] = KEY_MUTE,
  53         [ 38 ] = KEY_RECORD,
  54         [ 22 ] = KEY_PAUSE,
  55         [ 54 ] = KEY_STOP,
  56         [ 30 ] = KEY_VOLUMEDOWN,
  57         [ 62 ] = KEY_VOLUMEUP,
  58
  59         [ 32 ] = KEY_TUNER,       // TV/FM
  60         [ 16 ] = KEY_CD,
  61         [  8 ] = KEY_VIDEO,
  62         [  4 ] = KEY_AUDIO,
  63         [ 12 ] = KEY_ZOOM,        // full screen
  64         [  2 ] = KEY_INFO,        // preview
  65         [ 42 ] = KEY_SEARCH,      // autoscan
  66         [ 26 ] = KEY_STOP,        // freeze
  67         [ 58 ] = KEY_RECORD,      // capture
  68         [  6 ] = KEY_PLAY,        // unmarked
  69         [ 46 ] = KEY_RED,         // unmarked
  70         [ 14 ] = KEY_GREEN,       // unmarked
  71
  72         [ 33 ] = KEY_YELLOW,      // unmarked
  73         [ 17 ] = KEY_CHANNELDOWN,
  74         [ 49 ] = KEY_CHANNELUP,
  75         [  1 ] = KEY_BLUE,        // unmarked
  76 };
  77
  78 /* Matt Jesson <dvb@jesson.eclipse.co.uk */
  79 static IR_KEYTAB_TYPE ir_codes_avermedia_dvbt[IR_KEYTAB_SIZE] = {
  80         [ 0x28 ] = KEY_KP0,         //'0' / 'enter'
  81         [ 0x22 ] = KEY_KP1,         //'1'
  82         [ 0x12 ] = KEY_KP2,         //'2' / 'up arrow'
  83         [ 0x32 ] = KEY_KP3,         //'3'
  84         [ 0x24 ] = KEY_KP4,         //'4' / 'left arrow'
  85         [ 0x14 ] = KEY_KP5,         //'5'
  86         [ 0x34 ] = KEY_KP6,         //'6' / 'right arrow'
  87         [ 0x26 ] = KEY_KP7,         //'7'
  88         [ 0x16 ] = KEY_KP8,         //'8' / 'down arrow'
  89         [ 0x36 ] = KEY_KP9,         //'9'
  90
  91         [ 0x20 ] = KEY_LIST,        // 'source'
  92         [ 0x10 ] = KEY_TEXT,        // 'teletext'
  93         [ 0x00 ] = KEY_POWER,       // 'power'
  94         [ 0x04 ] = KEY_AUDIO,       // 'audio'
  95         [ 0x06 ] = KEY_ZOOM,        // 'full screen'
  96         [ 0x18 ] = KEY_VIDEO,       // 'display'
  97         [ 0x38 ] = KEY_SEARCH,      // 'loop'
  98         [ 0x08 ] = KEY_INFO,        // 'preview'
  99         [ 0x2a ] = KEY_REWIND,      // 'backward <<'
 100         [ 0x1a ] = KEY_FASTFORWARD, // 'forward >>'
 101         [ 0x3a ] = KEY_RECORD,      // 'capture'
 102         [ 0x0a ] = KEY_MUTE,        // 'mute'
 103         [ 0x2c ] = KEY_RECORD,      // 'record'
 104         [ 0x1c ] = KEY_PAUSE,       // 'pause'
 105         [ 0x3c ] = KEY_STOP,        // 'stop'
 106         [ 0x0c ] = KEY_PLAY,        // 'play'
 107         [ 0x2e ] = KEY_RED,         // 'red'
 108         [ 0x01 ] = KEY_BLUE,        // 'blue' / 'cancel'
 109         [ 0x0e ] = KEY_YELLOW,      // 'yellow' / 'ok'
 110         [ 0x21 ] = KEY_GREEN,       // 'green'
 111         [ 0x11 ] = KEY_CHANNELDOWN, // 'channel -'
 112         [ 0x31 ] = KEY_CHANNELUP,   // 'channel +'
 113         [ 0x1e ] = KEY_VOLUMEDOWN,  // 'volume -'
 114         [ 0x3e ] = KEY_VOLUMEUP,    // 'volume +'
 115 };
 116
 117 static IR_KEYTAB_TYPE ir_codes_pixelview[IR_KEYTAB_SIZE] = {
 118         [  2 ] = KEY_KP0,
 119         [  1 ] = KEY_KP1,
 120         [ 11 ] = KEY_KP2,
 121         [ 27 ] = KEY_KP3,
 122         [  5 ] = KEY_KP4,
 123         [  9 ] = KEY_KP5,
 124         [ 21 ] = KEY_KP6,
 125         [  6 ] = KEY_KP7,
 126         [ 10 ] = KEY_KP8,
 127         [ 18 ] = KEY_KP9,
 128
 129         [  3 ] = KEY_TUNER,       // TV/FM
 130         [  7 ] = KEY_SEARCH,      // scan
 131         [ 28 ] = KEY_ZOOM,        // full screen
 132         [ 30 ] = KEY_POWER,
 133         [ 23 ] = KEY_VOLUMEDOWN,
 134         [ 31 ] = KEY_VOLUMEUP,
 135         [ 20 ] = KEY_CHANNELDOWN,
 136         [ 22 ] = KEY_CHANNELUP,
 137         [ 24 ] = KEY_MUTE,
 138
 139         [  0 ] = KEY_LIST,        // source
 140         [ 19 ] = KEY_INFO,        // loop
 141         [ 16 ] = KEY_LAST,        // +100
 142         [ 13 ] = KEY_CLEAR,       // reset
 143         [ 12 ] = BTN_RIGHT,       // fun++
 144         [  4 ] = BTN_LEFT,        // fun--
 145         [ 14 ] = KEY_GOTO,        // function
 146         [ 15 ] = KEY_STOP,         // freeze
 147 };
 148
 149 /* Attila Kondoros <attila.kondoros@chello.hu> */
 150 static IR_KEYTAB_TYPE ir_codes_apac_viewcomp[IR_KEYTAB_SIZE] = {
 151
 152         [  1 ] = KEY_KP1,
 153         [  2 ] = KEY_KP2,
 154         [  3 ] = KEY_KP3,
 155         [  4 ] = KEY_KP4,
 156         [  5 ] = KEY_KP5,
 157         [  6 ] = KEY_KP6,
 158         [  7 ] = KEY_KP7,
 159         [  8 ] = KEY_KP8,
 160         [  9 ] = KEY_KP9,
 161         [  0 ] = KEY_KP0,
 162         [ 23 ] = KEY_LAST,        // +100
 163         [ 10 ] = KEY_LIST,        // recall
 164
 165
 166         [ 28 ] = KEY_TUNER,       // TV/FM
 167         [ 21 ] = KEY_SEARCH,      // scan
 168         [ 18 ] = KEY_POWER,       // power
 169         [ 31 ] = KEY_VOLUMEDOWN,  // vol up
 170         [ 27 ] = KEY_VOLUMEUP,    // vol down
 171         [ 30 ] = KEY_CHANNELDOWN, // chn up
 172         [ 26 ] = KEY_CHANNELUP,   // chn down
 173
 174         [ 17 ] = KEY_VIDEO,       // video
 175         [ 15 ] = KEY_ZOOM,        // full screen
 176         [ 19 ] = KEY_MUTE,        // mute/unmute
 177         [ 16 ] = KEY_TEXT,        // min
 178
 179         [ 13 ] = KEY_STOP,        // freeze
 180         [ 14 ] = KEY_RECORD,      // record
 181         [ 29 ] = KEY_PLAYPAUSE,   // stop
 182         [ 25 ] = KEY_PLAY,        // play
 183
 184         [ 22 ] = KEY_GOTO,        // osd
 185         [ 20 ] = KEY_REFRESH,     // default
 186         [ 12 ] = KEY_KPPLUS,      // fine tune >>>>
 187         [ 24 ] = KEY_KPMINUS      // fine tune <<<<
 188 };
 189
 190 /* ---------------------------------------------------------------------- */
 191
 192 struct IR {
 193         struct bttv_sub_device  *sub;
 194         struct input_dev        input;
 195         struct ir_input_state   ir;
 196         char                    name[32];
 197         char                    phys[32];
 198         u32                     mask_keycode;
 199         u32                     mask_keydown;
 200         u32                     mask_keyup;
 201
 202         int                     polling;
 203         u32                     last_gpio;
 204         struct work_struct      work;
 205         struct timer_list       timer;
 206 };
 207
 208 static int debug;
 209 module_param(debug, int, 0644);    /* debug level (0,1,2) */
 210
 211 #define DEVNAME "ir-kbd-gpio"
 212 #define dprintk(fmt, arg...)    if (debug) \
 213         printk(KERN_DEBUG DEVNAME ": " fmt , ## arg)
 214
 215 static void ir_irq(struct bttv_sub_device *sub);
 216 static int ir_probe(struct device *dev);
 217 static int ir_remove(struct device *dev);
 218
 219 static struct bttv_sub_driver driver = {
 220         .drv = {
 221                 .name   = DEVNAME,
 222                 .probe  = ir_probe,
 223                 .remove = ir_remove,
 224         },
 225         .gpio_irq       = ir_irq,
 226 };
 227
 228 /* ---------------------------------------------------------------------- */
 229
 230 static void ir_handle_key(struct IR *ir)
 231 {
 232         u32 gpio,data;
 233
 234         /* read gpio value */
 235         gpio = bttv_gpio_read(ir->sub->core);
 236         if (ir->polling) {
 237                 if (ir->last_gpio == gpio)
 238                         return;
 239                 ir->last_gpio = gpio;
 240         }
 241
 242         /* extract data */
 243         data = ir_extract_bits(gpio, ir->mask_keycode);
 244         dprintk(DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
 245                 gpio, data,
 246                 ir->polling               ? "poll"  : "irq",
 247                 (gpio & ir->mask_keydown) ? " down" : "",
 248                 (gpio & ir->mask_keyup)   ? " up"   : "");
 249
 250         if (ir->mask_keydown) {
 251                 /* bit set on keydown */
 252                 if (gpio & ir->mask_keydown) {
 253                         ir_input_keydown(&ir->input,&ir->ir,data,data);
 254                 } else {
 255                         ir_input_nokey(&ir->input,&ir->ir);
 256                 }
 257
 258         } else if (ir->mask_keyup) {
 259                 /* bit cleared on keydown */
 260                 if (0 == (gpio & ir->mask_keyup)) {
 261                         ir_input_keydown(&ir->input,&ir->ir,data,data);
 262                 } else {
 263                         ir_input_nokey(&ir->input,&ir->ir);
 264                 }
 265
 266         } else {
 267                 /* can't disturgissh keydown/up :-/ */
 268                 ir_input_keydown(&ir->input,&ir->ir,data,data);
 269                 ir_input_nokey(&ir->input,&ir->ir);
 270         }
 271 }
 272
 273 static void ir_irq(struct bttv_sub_device *sub)
 274 {
 275         struct IR *ir = dev_get_drvdata(&sub->dev);
 276
 277         if (!ir->polling)
 278                 ir_handle_key(ir);
 279 }
 280
 281 static void ir_timer(unsigned long data)
 282 {
 283         struct IR *ir = (struct IR*)data;
 284
 285         schedule_work(&ir->work);
 286 }
 287
 288 static void ir_work(void *data)
 289 {
 290         struct IR *ir = data;
 291         unsigned long timeout;
 292
 293         ir_handle_key(ir);
 294         timeout = jiffies + (ir->polling * HZ / 1000);
 295         mod_timer(&ir->timer, timeout);
 296 }
 297
 298 /* ---------------------------------------------------------------------- */
 299
 300 static int ir_probe(struct device *dev)
 301 {
 302         struct bttv_sub_device *sub = to_bttv_sub_dev(dev);
 303         struct IR *ir;
 304         IR_KEYTAB_TYPE *ir_codes = NULL;
 305         int ir_type = IR_TYPE_OTHER;
 306
 307         ir = kmalloc(sizeof(*ir),GFP_KERNEL);
 308         if (NULL == ir)
 309                 return -ENOMEM;
 310         memset(ir,0,sizeof(*ir));
 311
 312         /* detect & configure */
 313         switch (sub->core->type) {
 314         case BTTV_AVERMEDIA:
 315         case BTTV_AVPHONE98:
 316         case BTTV_AVERMEDIA98:
 317                 ir_codes         = ir_codes_avermedia;
 318                 ir->mask_keycode = 0xf88000;
 319                 ir->mask_keydown = 0x010000;
 320                 ir->polling      = 50; // ms
 321                 break;
 322
 323         case BTTV_AVDVBT_761:
 324         case BTTV_AVDVBT_771:
 325                 ir_codes         = ir_codes_avermedia_dvbt;
 326                 ir->mask_keycode = 0x0f00c0;
 327                 ir->mask_keydown = 0x000020;
 328                 ir->polling      = 50; // ms
 329                 break;
 330
 331         case BTTV_PXELVWPLTVPAK:
 332                 ir_codes         = ir_codes_pixelview;
 333                 ir->mask_keycode = 0x003e00;
 334                 ir->mask_keyup   = 0x010000;
 335                 ir->polling      = 50; // ms
 336                 break;
 337         case BTTV_PV_BT878P_9B:
 338         case BTTV_PV_BT878P_PLUS:
 339                 ir_codes         = ir_codes_pixelview;
 340                 ir->mask_keycode = 0x001f00;
 341                 ir->mask_keyup   = 0x008000;
 342                 ir->polling      = 50; // ms
 343                 break;
 344
 345         case BTTV_WINFAST2000:
 346                 ir_codes         = ir_codes_winfast;
 347                 ir->mask_keycode = 0x1f8;
 348                 break;
 349         case BTTV_MAGICTVIEW061:
 350         case BTTV_MAGICTVIEW063:
 351                 ir_codes         = ir_codes_winfast;
 352                 ir->mask_keycode = 0x0008e000;
 353                 ir->mask_keydown = 0x00200000;
 354                 break;
 355         case BTTV_APAC_VIEWCOMP:
 356                 ir_codes         = ir_codes_apac_viewcomp;
 357                 ir->mask_keycode = 0x001f00;
 358                 ir->mask_keyup   = 0x008000;
 359                 ir->polling      = 50; // ms
 360                 break;
 361         }
 362         if (NULL == ir_codes) {
 363                 kfree(ir);
 364                 return -ENODEV;
 365         }
 366
 367         /* init hardware-specific stuff */
 368         bttv_gpio_inout(sub->core, ir->mask_keycode | ir->mask_keydown, 0);
 369         ir->sub = sub;
 370
 371         /* init input device */
 372         snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
 373                  sub->core->type);
 374         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
 375                  pci_name(sub->core->pci));
 376
 377         ir_input_init(&ir->input, &ir->ir, ir_type, ir_codes);
 378         ir->input.name = ir->name;
 379         ir->input.phys = ir->phys;
 380         ir->input.id.bustype = BUS_PCI;
 381         ir->input.id.version = 1;
 382         if (sub->core->pci->subsystem_vendor) {
 383                 ir->input.id.vendor  = sub->core->pci->subsystem_vendor;
 384                 ir->input.id.product = sub->core->pci->subsystem_device;
 385         } else {
 386                 ir->input.id.vendor  = sub->core->pci->vendor;
 387                 ir->input.id.product = sub->core->pci->device;
 388         }
 389
 390         if (ir->polling) {
 391                 INIT_WORK(&ir->work, ir_work, ir);
 392                 init_timer(&ir->timer);
 393                 ir->timer.function = ir_timer;
 394                 ir->timer.data     = (unsigned long)ir;
 395                 schedule_work(&ir->work);
 396         }
 397
 398         /* all done */
 399         dev_set_drvdata(dev,ir);
 400         input_register_device(&ir->input);
 401         printk(DEVNAME ": %s detected at %s\n",ir->input.name,ir->input.phys);
 402
 403         return 0;
 404 }
 405
 406 static int ir_remove(struct device *dev)
 407 {
 408         struct IR *ir = dev_get_drvdata(dev);
 409
 410         if (ir->polling) {
 411                 del_timer(&ir->timer);
 412                 flush_scheduled_work();
 413         }
 414
 415         input_unregister_device(&ir->input);
 416         kfree(ir);
 417         return 0;
 418 }
 419
 420 /* ---------------------------------------------------------------------- */
 421
 422 MODULE_AUTHOR("Gerd Knorr, Pavel Machek");
 423 MODULE_DESCRIPTION("input driver for bt8x8 gpio IR remote controls");
 424 MODULE_LICENSE("GPL");
 425
 426 static int ir_init(void)
 427 {
 428         return bttv_sub_register(&driver, "remote");
 429 }
 430
 431 static void ir_fini(void)
 432 {
 433         bttv_sub_unregister(&driver);
 434 }
 435
 436 module_init(ir_init);
 437 module_exit(ir_fini);
 438
 439
 440 /*
 441  * Local variables:
 442  * c-basic-offset: 8
 443  * End:
 444  */