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/interrupt.h>
  24 #include <linux/input.h>
  25
  26 #include "saa7134-reg.h"
  27 #include "saa7134.h"
  28
  29 /* ---------------------------------------------------------------------- */
  30
  31 static IR_KEYTAB_TYPE flyvideo_codes[IR_KEYTAB_SIZE] = {
  32         [   15 ] = KEY_KP0,
  33         [    3 ] = KEY_KP1,
  34         [    4 ] = KEY_KP2,
  35         [    5 ] = KEY_KP3,
  36         [    7 ] = KEY_KP4,
  37         [    8 ] = KEY_KP5,
  38         [    9 ] = KEY_KP6,
  39         [   11 ] = KEY_KP7,
  40         [   12 ] = KEY_KP8,
  41         [   13 ] = KEY_KP9,
  42
  43         [   14 ] = KEY_TUNER,        // Air/Cable
  44         [   17 ] = KEY_VIDEO,        // Video
  45         [   21 ] = KEY_AUDIO,        // Audio
  46         [    0 ] = KEY_POWER,        // Pover
  47         [    2 ] = KEY_ZOOM,         // Fullscreen
  48         [   27 ] = KEY_MUTE,         // Mute
  49         [   20 ] = KEY_VOLUMEUP,
  50         [   23 ] = KEY_VOLUMEDOWN,
  51         [   18 ] = KEY_CHANNELUP,    // Channel +
  52         [   19 ] = KEY_CHANNELDOWN,  // Channel -
  53         [    6 ] = KEY_AGAIN,        // Recal
  54         [   16 ] = KEY_KPENTER,      // Enter
  55
  56 #if 1 /* FIXME */
  57         [   26 ] = KEY_F22,          // Stereo
  58         [   24 ] = KEY_EDIT,         // AV Source
  59 #endif
  60 };
  61
  62 static IR_KEYTAB_TYPE cinergy_codes[IR_KEYTAB_SIZE] = {
  63         [    0 ] = KEY_KP0,
  64         [    1 ] = KEY_KP1,
  65         [    2 ] = KEY_KP2,
  66         [    3 ] = KEY_KP3,
  67         [    4 ] = KEY_KP4,
  68         [    5 ] = KEY_KP5,
  69         [    6 ] = KEY_KP6,
  70         [    7 ] = KEY_KP7,
  71         [    8 ] = KEY_KP8,
  72         [    9 ] = KEY_KP9,
  73
  74         [ 0x0a ] = KEY_POWER,
  75         [ 0x0b ] = KEY_PROG1,           // app
  76         [ 0x0c ] = KEY_ZOOM,            // zoom/fullscreen
  77         [ 0x0d ] = KEY_CHANNELUP,       // channel
  78         [ 0x0e ] = KEY_CHANNELDOWN,     // channel-
  79         [ 0x0f ] = KEY_VOLUMEUP,
  80         [ 0x10 ] = KEY_VOLUMEDOWN,
  81         [ 0x11 ] = KEY_TUNER,           // AV
  82         [ 0x12 ] = KEY_NUMLOCK,         // -/--
  83         [ 0x13 ] = KEY_AUDIO,           // audio
  84         [ 0x14 ] = KEY_MUTE,
  85         [ 0x15 ] = KEY_UP,
  86         [ 0x16 ] = KEY_DOWN,
  87         [ 0x17 ] = KEY_LEFT,
  88         [ 0x18 ] = KEY_RIGHT,
  89         [ 0x19 ] = BTN_LEFT,
  90         [ 0x1a ] = BTN_RIGHT,
  91         [ 0x1b ] = KEY_WWW,             // text
  92         [ 0x1c ] = KEY_REWIND,
  93         [ 0x1d ] = KEY_FORWARD,
  94         [ 0x1e ] = KEY_RECORD,
  95         [ 0x1f ] = KEY_PLAY,
  96         [ 0x20 ] = KEY_PREVIOUSSONG,
  97         [ 0x21 ] = KEY_NEXTSONG,
  98         [ 0x22 ] = KEY_PAUSE,
  99         [ 0x23 ] = KEY_STOP,
 100 };
 101
 102 /* Alfons Geser <a.geser@cox.net>
 103  * updates from Job D. R. Borges <jobdrb@ig.com.br> */
 104 static IR_KEYTAB_TYPE eztv_codes[IR_KEYTAB_SIZE] = {
 105         [ 18 ] = KEY_POWER,
 106         [  1 ] = KEY_TV,             // DVR
 107         [ 21 ] = KEY_DVD,            // DVD
 108         [ 23 ] = KEY_AUDIO,          // music
 109                                      // DVR mode / DVD mode / music mode
 110
 111         [ 27 ] = KEY_MUTE,           // mute
 112         [  2 ] = KEY_LANGUAGE,       // MTS/SAP / audio / autoseek
 113         [ 30 ] = KEY_SUBTITLE,       // closed captioning / subtitle / seek
 114         [ 22 ] = KEY_ZOOM,           // full screen
 115         [ 28 ] = KEY_VIDEO,          // video source / eject / delall
 116         [ 29 ] = KEY_RESTART,        // playback / angle / del
 117         [ 47 ] = KEY_SEARCH,         // scan / menu / playlist
 118         [ 48 ] = KEY_CHANNEL,        // CH surfing / bookmark / memo
 119
 120         [ 49 ] = KEY_HELP,           // help
 121         [ 50 ] = KEY_MODE,           // num/memo
 122         [ 51 ] = KEY_ESC,            // cancel
 123
 124         [ 12 ] = KEY_UP,             // up
 125         [ 16 ] = KEY_DOWN,           // down
 126         [  8 ] = KEY_LEFT,           // left
 127         [  4 ] = KEY_RIGHT,          // right
 128         [  3 ] = KEY_SELECT,         // select
 129
 130         [ 31 ] = KEY_REWIND,         // rewind
 131         [ 32 ] = KEY_PLAYPAUSE,      // play/pause
 132         [ 41 ] = KEY_FORWARD,        // forward
 133         [ 20 ] = KEY_AGAIN,          // repeat
 134         [ 43 ] = KEY_RECORD,         // recording
 135         [ 44 ] = KEY_STOP,           // stop
 136         [ 45 ] = KEY_PLAY,           // play
 137         [ 46 ] = KEY_SHUFFLE,        // snapshot / shuffle
 138
 139         [  0 ] = KEY_KP0,
 140         [  5 ] = KEY_KP1,
 141         [  6 ] = KEY_KP2,
 142         [  7 ] = KEY_KP3,
 143         [  9 ] = KEY_KP4,
 144         [ 10 ] = KEY_KP5,
 145         [ 11 ] = KEY_KP6,
 146         [ 13 ] = KEY_KP7,
 147         [ 14 ] = KEY_KP8,
 148         [ 15 ] = KEY_KP9,
 149
 150         [ 42 ] = KEY_VOLUMEUP,
 151         [ 17 ] = KEY_VOLUMEDOWN,
 152         [ 24 ] = KEY_CHANNELUP,      // CH.tracking up
 153         [ 25 ] = KEY_CHANNELDOWN,    // CH.tracking down
 154
 155         [ 19 ] = KEY_KPENTER,        // enter
 156         [ 33 ] = KEY_KPDOT,          // . (decimal dot)
 157 };
 158
 159 /* ---------------------------------------------------------------------- */
 160
 161 static int build_key(struct saa7134_dev *dev)
 162 {
 163         struct saa7134_ir *ir = dev->remote;
 164         u32 gpio, data;
 165
 166         /* rising SAA7134_GPIO_GPRESCAN reads the status */
 167         saa_clearb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
 168         saa_setb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
 169
 170         gpio = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2);
 171         if (ir->polling) {
 172                 if (ir->last_gpio == gpio)
 173                         return 0;
 174                 ir->last_gpio = gpio;
 175         }
 176
 177         data = ir_extract_bits(gpio, ir->mask_keycode);
 178         printk("%s: build_key gpio=0x%x mask=0x%x data=%d\n",
 179                dev->name, gpio, ir->mask_keycode, data);
 180
 181         if ((ir->mask_keydown  &&  (0 != (gpio & ir->mask_keydown))) ||
 182             (ir->mask_keyup    &&  (0 == (gpio & ir->mask_keyup)))) {
 183                 ir_input_keydown(&ir->dev,&ir->ir,data,data);
 184         } else {
 185                 ir_input_nokey(&ir->dev,&ir->ir);
 186         }
 187         return 0;
 188 }
 189
 190 /* ---------------------------------------------------------------------- */
 191
 192 void saa7134_input_irq(struct saa7134_dev *dev)
 193 {
 194         struct saa7134_ir *ir = dev->remote;
 195
 196         if (!ir->polling)
 197                 build_key(dev);
 198 }
 199
 200 static void saa7134_input_timer(unsigned long data)
 201 {
 202         struct saa7134_dev *dev = (struct saa7134_dev*)data;
 203         struct saa7134_ir *ir = dev->remote;
 204         unsigned long timeout;
 205
 206         build_key(dev);
 207         timeout = jiffies + (ir->polling * HZ / 1000);
 208         mod_timer(&ir->timer, timeout);
 209 }
 210
 211 int saa7134_input_init1(struct saa7134_dev *dev)
 212 {
 213         struct saa7134_ir *ir;
 214         IR_KEYTAB_TYPE *ir_codes = NULL;
 215         u32 mask_keycode = 0;
 216         u32 mask_keydown = 0;
 217         u32 mask_keyup   = 0;
 218         int polling      = 0;
 219         int ir_type      = IR_TYPE_OTHER;
 220
 221         /* detect & configure */
 222         if (!dev->has_remote)
 223                 return -ENODEV;
 224         switch (dev->board) {
 225         case SAA7134_BOARD_FLYVIDEO2000:
 226         case SAA7134_BOARD_FLYVIDEO3000:
 227                 ir_codes     = flyvideo_codes;
 228                 mask_keycode = 0xEC00000;
 229                 mask_keydown = 0x0040000;
 230                 break;
 231         case SAA7134_BOARD_CINERGY400:
 232         case SAA7134_BOARD_CINERGY600:
 233                 ir_codes     = cinergy_codes;
 234                 mask_keycode = 0x00003f;
 235                 mask_keyup   = 0x040000;
 236                 break;
 237         case SAA7134_BOARD_ECS_TVP3XP:
 238         case SAA7134_BOARD_ECS_TVP3XP_4CB5:
 239                 ir_codes     = eztv_codes;
 240                 mask_keycode = 0x00017c;
 241                 mask_keyup   = 0x000002;
 242                 polling      = 50; // ms
 243                 break;
 244         }
 245         if (NULL == ir_codes) {
 246                 printk("%s: Oops: IR config error [card=%d]\n",
 247                        dev->name, dev->board);
 248                 return -ENODEV;
 249         }
 250
 251         ir = kmalloc(sizeof(*ir),GFP_KERNEL);
 252         if (NULL == ir)
 253                 return -ENOMEM;
 254         memset(ir,0,sizeof(*ir));
 255
 256         /* init hardware-specific stuff */
 257         ir->mask_keycode = mask_keycode;
 258         ir->mask_keydown = mask_keydown;
 259         ir->mask_keyup   = mask_keyup;
 260         ir->polling      = polling;
 261
 262         /* init input device */
 263         snprintf(ir->name, sizeof(ir->name), "saa7134 IR (%s)",
 264                  saa7134_boards[dev->board].name);
 265         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
 266                  pci_name(dev->pci));
 267
 268         ir_input_init(&ir->dev, &ir->ir, ir_type, ir_codes);
 269         ir->dev.name = ir->name;
 270         ir->dev.phys = ir->phys;
 271         ir->dev.id.bustype = BUS_PCI;
 272         ir->dev.id.version = 1;
 273         if (dev->pci->subsystem_vendor) {
 274                 ir->dev.id.vendor  = dev->pci->subsystem_vendor;
 275                 ir->dev.id.product = dev->pci->subsystem_device;
 276         } else {
 277                 ir->dev.id.vendor  = dev->pci->vendor;
 278                 ir->dev.id.product = dev->pci->device;
 279         }
 280
 281         /* all done */
 282         dev->remote = ir;
 283         if (ir->polling) {
 284                 init_timer(&ir->timer);
 285                 ir->timer.function = saa7134_input_timer;
 286                 ir->timer.data     = (unsigned long)dev;
 287                 ir->timer.expires  = jiffies + HZ;
 288                 add_timer(&ir->timer);
 289         }
 290
 291         input_register_device(&dev->remote->dev);
 292         printk("%s: registered input device for IR\n",dev->name);
 293         return 0;
 294 }
 295
 296 void saa7134_input_fini(struct saa7134_dev *dev)
 297 {
 298         if (NULL == dev->remote)
 299                 return;
 300
 301         input_unregister_device(&dev->remote->dev);
 302         if (dev->remote->polling)
 303                 del_timer_sync(&dev->remote->timer);
 304         kfree(dev->remote);
 305         dev->remote = NULL;
 306 }
 307
 308 /* ----------------------------------------------------------------------
 309  * Local variables:
 310  * c-basic-offset: 8
 311  * End:
 312  */