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

   1 /*
   2  * $Id: ir-kbd-gpio.c,v 1.13 2005/05/15 19:01:26 mchehab 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 /* Attila Kondoros <attila.kondoros@chello.hu> */
 118 static IR_KEYTAB_TYPE ir_codes_apac_viewcomp[IR_KEYTAB_SIZE] = {
 119
 120         [  1 ] = KEY_KP1,
 121         [  2 ] = KEY_KP2,
 122         [  3 ] = KEY_KP3,
 123         [  4 ] = KEY_KP4,
 124         [  5 ] = KEY_KP5,
 125         [  6 ] = KEY_KP6,
 126         [  7 ] = KEY_KP7,
 127         [  8 ] = KEY_KP8,
 128         [  9 ] = KEY_KP9,
 129         [  0 ] = KEY_KP0,
 130         [ 23 ] = KEY_LAST,        // +100
 131         [ 10 ] = KEY_LIST,        // recall
 132
 133
 134         [ 28 ] = KEY_TUNER,       // TV/FM
 135         [ 21 ] = KEY_SEARCH,      // scan
 136         [ 18 ] = KEY_POWER,       // power
 137         [ 31 ] = KEY_VOLUMEDOWN,  // vol up
 138         [ 27 ] = KEY_VOLUMEUP,    // vol down
 139         [ 30 ] = KEY_CHANNELDOWN, // chn up
 140         [ 26 ] = KEY_CHANNELUP,   // chn down
 141
 142         [ 17 ] = KEY_VIDEO,       // video
 143         [ 15 ] = KEY_ZOOM,        // full screen
 144         [ 19 ] = KEY_MUTE,        // mute/unmute
 145         [ 16 ] = KEY_TEXT,        // min
 146
 147         [ 13 ] = KEY_STOP,        // freeze
 148         [ 14 ] = KEY_RECORD,      // record
 149         [ 29 ] = KEY_PLAYPAUSE,   // stop
 150         [ 25 ] = KEY_PLAY,        // play
 151
 152         [ 22 ] = KEY_GOTO,        // osd
 153         [ 20 ] = KEY_REFRESH,     // default
 154         [ 12 ] = KEY_KPPLUS,      // fine tune >>>>
 155         [ 24 ] = KEY_KPMINUS      // fine tune <<<<
 156 };
 157
 158 /* ---------------------------------------------------------------------- */
 159
 160 struct IR {
 161         struct bttv_sub_device  *sub;
 162         struct input_dev        input;
 163         struct ir_input_state   ir;
 164         char                    name[32];
 165         char                    phys[32];
 166         u32                     mask_keycode;
 167         u32                     mask_keydown;
 168         u32                     mask_keyup;
 169
 170         int                     polling;
 171         u32                     last_gpio;
 172         struct work_struct      work;
 173         struct timer_list       timer;
 174 };
 175
 176 static int debug;
 177 module_param(debug, int, 0644);    /* debug level (0,1,2) */
 178
 179 #define DEVNAME "ir-kbd-gpio"
 180 #define dprintk(fmt, arg...)    if (debug) \
 181         printk(KERN_DEBUG DEVNAME ": " fmt , ## arg)
 182
 183 static void ir_irq(struct bttv_sub_device *sub);
 184 static int ir_probe(struct device *dev);
 185 static int ir_remove(struct device *dev);
 186
 187 static struct bttv_sub_driver driver = {
 188         .drv = {
 189                 .name   = DEVNAME,
 190                 .probe  = ir_probe,
 191                 .remove = ir_remove,
 192         },
 193         .gpio_irq       = ir_irq,
 194 };
 195
 196 /* ---------------------------------------------------------------------- */
 197
 198 static void ir_handle_key(struct IR *ir)
 199 {
 200         u32 gpio,data;
 201
 202         /* read gpio value */
 203         gpio = bttv_gpio_read(ir->sub->core);
 204         if (ir->polling) {
 205                 if (ir->last_gpio == gpio)
 206                         return;
 207                 ir->last_gpio = gpio;
 208         }
 209
 210         /* extract data */
 211         data = ir_extract_bits(gpio, ir->mask_keycode);
 212         dprintk(DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
 213                 gpio, data,
 214                 ir->polling               ? "poll"  : "irq",
 215                 (gpio & ir->mask_keydown) ? " down" : "",
 216                 (gpio & ir->mask_keyup)   ? " up"   : "");
 217
 218         if (ir->mask_keydown) {
 219                 /* bit set on keydown */
 220                 if (gpio & ir->mask_keydown) {
 221                         ir_input_keydown(&ir->input,&ir->ir,data,data);
 222                 } else {
 223                         ir_input_nokey(&ir->input,&ir->ir);
 224                 }
 225
 226         } else if (ir->mask_keyup) {
 227                 /* bit cleared on keydown */
 228                 if (0 == (gpio & ir->mask_keyup)) {
 229                         ir_input_keydown(&ir->input,&ir->ir,data,data);
 230                 } else {
 231                         ir_input_nokey(&ir->input,&ir->ir);
 232                 }
 233
 234         } else {
 235                 /* can't disturgissh keydown/up :-/ */
 236                 ir_input_keydown(&ir->input,&ir->ir,data,data);
 237                 ir_input_nokey(&ir->input,&ir->ir);
 238         }
 239 }
 240
 241 static void ir_irq(struct bttv_sub_device *sub)
 242 {
 243         struct IR *ir = dev_get_drvdata(&sub->dev);
 244
 245         if (!ir->polling)
 246                 ir_handle_key(ir);
 247 }
 248
 249 static void ir_timer(unsigned long data)
 250 {
 251         struct IR *ir = (struct IR*)data;
 252
 253         schedule_work(&ir->work);
 254 }
 255
 256 static void ir_work(void *data)
 257 {
 258         struct IR *ir = data;
 259         unsigned long timeout;
 260
 261         ir_handle_key(ir);
 262         timeout = jiffies + (ir->polling * HZ / 1000);
 263         mod_timer(&ir->timer, timeout);
 264 }
 265
 266 /* ---------------------------------------------------------------------- */
 267
 268 static int ir_probe(struct device *dev)
 269 {
 270         struct bttv_sub_device *sub = to_bttv_sub_dev(dev);
 271         struct IR *ir;
 272         IR_KEYTAB_TYPE *ir_codes = NULL;
 273         int ir_type = IR_TYPE_OTHER;
 274
 275         ir = kmalloc(sizeof(*ir),GFP_KERNEL);
 276         if (NULL == ir)
 277                 return -ENOMEM;
 278         memset(ir,0,sizeof(*ir));
 279
 280         /* detect & configure */
 281         switch (sub->core->type) {
 282         case BTTV_AVERMEDIA:
 283         case BTTV_AVPHONE98:
 284         case BTTV_AVERMEDIA98:
 285                 ir_codes         = ir_codes_avermedia;
 286                 ir->mask_keycode = 0xf88000;
 287                 ir->mask_keydown = 0x010000;
 288                 ir->polling      = 50; // ms
 289                 break;
 290
 291         case BTTV_AVDVBT_761:
 292         case BTTV_AVDVBT_771:
 293                 ir_codes         = ir_codes_avermedia_dvbt;
 294                 ir->mask_keycode = 0x0f00c0;
 295                 ir->mask_keydown = 0x000020;
 296                 ir->polling      = 50; // ms
 297                 break;
 298
 299         case BTTV_PXELVWPLTVPAK:
 300                 ir_codes         = ir_codes_pixelview;
 301                 ir->mask_keycode = 0x003e00;
 302                 ir->mask_keyup   = 0x010000;
 303                 ir->polling      = 50; // ms
 304                 break;
 305         case BTTV_PV_BT878P_9B:
 306         case BTTV_PV_BT878P_PLUS:
 307                 ir_codes         = ir_codes_pixelview;
 308                 ir->mask_keycode = 0x001f00;
 309                 ir->mask_keyup   = 0x008000;
 310                 ir->polling      = 50; // ms
 311                 break;
 312
 313         case BTTV_WINFAST2000:
 314                 ir_codes         = ir_codes_winfast;
 315                 ir->mask_keycode = 0x1f8;
 316                 break;
 317         case BTTV_MAGICTVIEW061:
 318         case BTTV_MAGICTVIEW063:
 319                 ir_codes         = ir_codes_winfast;
 320                 ir->mask_keycode = 0x0008e000;
 321                 ir->mask_keydown = 0x00200000;
 322                 break;
 323         case BTTV_APAC_VIEWCOMP:
 324                 ir_codes         = ir_codes_apac_viewcomp;
 325                 ir->mask_keycode = 0x001f00;
 326                 ir->mask_keyup   = 0x008000;
 327                 ir->polling      = 50; // ms
 328                 break;
 329         }
 330         if (NULL == ir_codes) {
 331                 kfree(ir);
 332                 return -ENODEV;
 333         }
 334
 335         /* init hardware-specific stuff */
 336         bttv_gpio_inout(sub->core, ir->mask_keycode | ir->mask_keydown, 0);
 337         ir->sub = sub;
 338
 339         /* init input device */
 340         snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
 341                  sub->core->type);
 342         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
 343                  pci_name(sub->core->pci));
 344
 345         ir_input_init(&ir->input, &ir->ir, ir_type, ir_codes);
 346         ir->input.name = ir->name;
 347         ir->input.phys = ir->phys;
 348         ir->input.id.bustype = BUS_PCI;
 349         ir->input.id.version = 1;
 350         if (sub->core->pci->subsystem_vendor) {
 351                 ir->input.id.vendor  = sub->core->pci->subsystem_vendor;
 352                 ir->input.id.product = sub->core->pci->subsystem_device;
 353         } else {
 354                 ir->input.id.vendor  = sub->core->pci->vendor;
 355                 ir->input.id.product = sub->core->pci->device;
 356         }
 357
 358         if (ir->polling) {
 359                 INIT_WORK(&ir->work, ir_work, ir);
 360                 init_timer(&ir->timer);
 361                 ir->timer.function = ir_timer;
 362                 ir->timer.data     = (unsigned long)ir;
 363                 schedule_work(&ir->work);
 364         }
 365
 366         /* all done */
 367         dev_set_drvdata(dev,ir);
 368         input_register_device(&ir->input);
 369         printk(DEVNAME ": %s detected at %s\n",ir->input.name,ir->input.phys);
 370
 371         return 0;
 372 }
 373
 374 static int ir_remove(struct device *dev)
 375 {
 376         struct IR *ir = dev_get_drvdata(dev);
 377
 378         if (ir->polling) {
 379                 del_timer(&ir->timer);
 380                 flush_scheduled_work();
 381         }
 382
 383         input_unregister_device(&ir->input);
 384         kfree(ir);
 385         return 0;
 386 }
 387
 388 /* ---------------------------------------------------------------------- */
 389
 390 MODULE_AUTHOR("Gerd Knorr, Pavel Machek");
 391 MODULE_DESCRIPTION("input driver for bt8x8 gpio IR remote controls");
 392 MODULE_LICENSE("GPL");
 393
 394 static int ir_init(void)
 395 {
 396         return bttv_sub_register(&driver, "remote");
 397 }
 398
 399 static void ir_fini(void)
 400 {
 401         bttv_sub_unregister(&driver);
 402 }
 403
 404 module_init(ir_init);
 405 module_exit(ir_fini);
 406
 407
 408 /*
 409  * Local variables:
 410  * c-basic-offset: 8
 411  * End:
 412  */