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

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