drivers/sound/pas2_mixer.c

   1
   2 /*
   3  * sound/pas2_mixer.c
   4  *
   5  * Mixer routines for the Pro Audio Spectrum cards.
   6  */
   7
   8 /*
   9  * Copyright (C) by Hannu Savolainen 1993-1997
  10  *
  11  * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
  12  * Version 2 (June 1991). See the "COPYING" file distributed with this software
  13  * for more info.
  14  */
  15 /*
  16  * Thomas Sailer   : ioctl code reworked (vmalloc/vfree removed)
  17  */
  18 #include "sound_config.h"
  19
  20 #ifndef DEB
  21 #define DEB(what)               /* (what) */
  22 #endif
  23
  24 extern int      translate_code;
  25 extern char     pas_model;
  26 extern int     *pas_osp;
  27 extern int      pas_audiodev;
  28
  29 static int      rec_devices = (SOUND_MASK_MIC);         /* Default recording source */
  30 static int      mode_control = 0;
  31
  32 #define POSSIBLE_RECORDING_DEVICES      (SOUND_MASK_SYNTH | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
  33                                          SOUND_MASK_CD | SOUND_MASK_ALTPCM)
  34
  35 #define SUPPORTED_MIXER_DEVICES         (SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
  36                                          SOUND_MASK_CD | SOUND_MASK_ALTPCM | SOUND_MASK_IMIX | \
  37                                          SOUND_MASK_VOLUME | SOUND_MASK_BASS | SOUND_MASK_TREBLE | SOUND_MASK_RECLEV)
  38
  39 static int     *levels;
  40
  41 static int      default_levels[32] =
  42 {
  43         0x3232,                 /* Master Volume */
  44         0x3232,                 /* Bass */
  45         0x3232,                 /* Treble */
  46         0x5050,                 /* FM */
  47         0x4b4b,                 /* PCM */
  48         0x3232,                 /* PC Speaker */
  49         0x4b4b,                 /* Ext Line */
  50         0x4b4b,                 /* Mic */
  51         0x4b4b,                 /* CD */
  52         0x6464,                 /* Recording monitor */
  53         0x4b4b,                 /* SB PCM */
  54         0x6464                  /* Recording level */
  55 };
  56
  57 void
  58 mix_write(unsigned char data, int ioaddr)
  59 {
  60         /*
  61          * The Revision D cards have a problem with their MVA508 interface. The
  62          * kludge-o-rama fix is to make a 16-bit quantity with identical LSB and
  63          * MSBs out of the output byte and to do a 16-bit out to the mixer port -
  64          * 1. We need to do this because it isn't timing problem but chip access
  65          * sequence problem.
  66          */
  67
  68         if (pas_model == 4)
  69           {
  70                   outw(data | (data << 8), (ioaddr ^ translate_code) - 1);
  71                   outb((0x80), 0);
  72         } else
  73                 pas_write(data, ioaddr);
  74 }
  75
  76 static int
  77 mixer_output(int right_vol, int left_vol, int div, int bits,
  78              int mixer)         /* Input or output mixer */
  79 {
  80         int             left = left_vol * div / 100;
  81         int             right = right_vol * div / 100;
  82
  83
  84         if (bits & 0x10)
  85           {
  86                   left |= mixer;
  87                   right |= mixer;
  88           }
  89         if (bits == 0x03 || bits == 0x04)
  90           {
  91                   mix_write(0x80 | bits, 0x078B);
  92                   mix_write(left, 0x078B);
  93                   right_vol = left_vol;
  94         } else
  95           {
  96                   mix_write(0x80 | 0x20 | bits, 0x078B);
  97                   mix_write(left, 0x078B);
  98                   mix_write(0x80 | 0x40 | bits, 0x078B);
  99                   mix_write(right, 0x078B);
 100           }
 101
 102         return (left_vol | (right_vol << 8));
 103 }
 104
 105 static void
 106 set_mode(int new_mode)
 107 {
 108         mix_write(0x80 | 0x05, 0x078B);
 109         mix_write(new_mode, 0x078B);
 110
 111         mode_control = new_mode;
 112 }
 113
 114 static int
 115 pas_mixer_set(int whichDev, unsigned int level)
 116 {
 117         int             left, right, devmask, changed, i, mixer = 0;
 118
 119         DEB(printk("static int pas_mixer_set(int whichDev = %d, unsigned int level = %X)\n", whichDev, level));
 120
 121         left = level & 0x7f;
 122         right = (level & 0x7f00) >> 8;
 123
 124         if (whichDev < SOUND_MIXER_NRDEVICES) {
 125                 if ((1 << whichDev) & rec_devices)
 126                         mixer = 0x20;
 127                 else
 128                         mixer = 0x00;
 129         }
 130
 131         switch (whichDev)
 132           {
 133           case SOUND_MIXER_VOLUME:      /* Master volume (0-63) */
 134                   levels[whichDev] = mixer_output(right, left, 63, 0x01, 0);
 135                   break;
 136
 137                   /*
 138                    * Note! Bass and Treble are mono devices. Will use just the left
 139                    * channel.
 140                    */
 141           case SOUND_MIXER_BASS:        /* Bass (0-12) */
 142                   levels[whichDev] = mixer_output(right, left, 12, 0x03, 0);
 143                   break;
 144           case SOUND_MIXER_TREBLE:      /* Treble (0-12) */
 145                   levels[whichDev] = mixer_output(right, left, 12, 0x04, 0);
 146                   break;
 147
 148           case SOUND_MIXER_SYNTH:       /* Internal synthesizer (0-31) */
 149                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x00, mixer);
 150                   break;
 151           case SOUND_MIXER_PCM: /* PAS PCM (0-31) */
 152                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x05, mixer);
 153                   break;
 154           case SOUND_MIXER_ALTPCM:      /* SB PCM (0-31) */
 155                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x07, mixer);
 156                   break;
 157           case SOUND_MIXER_SPEAKER:     /* PC speaker (0-31) */
 158                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x06, mixer);
 159                   break;
 160           case SOUND_MIXER_LINE:        /* External line (0-31) */
 161                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x02, mixer);
 162                   break;
 163           case SOUND_MIXER_CD:  /* CD (0-31) */
 164                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x03, mixer);
 165                   break;
 166           case SOUND_MIXER_MIC: /* External microphone (0-31) */
 167                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x04, mixer);
 168                   break;
 169           case SOUND_MIXER_IMIX:        /* Recording monitor (0-31) (Output mixer only) */
 170                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x01,
 171                                                   0x00);
 172                   break;
 173           case SOUND_MIXER_RECLEV:      /* Recording level (0-15) */
 174                   levels[whichDev] = mixer_output(right, left, 15, 0x02, 0);
 175                   break;
 176
 177
 178           case SOUND_MIXER_RECSRC:
 179                   devmask = level & POSSIBLE_RECORDING_DEVICES;
 180
 181                   changed = devmask ^ rec_devices;
 182                   rec_devices = devmask;
 183
 184                   for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
 185                           if (changed & (1 << i))
 186                             {
 187                                     pas_mixer_set(i, levels[i]);
 188                             }
 189                   return rec_devices;
 190                   break;
 191
 192           default:
 193                   return -EINVAL;
 194           }
 195
 196         return (levels[whichDev]);
 197 }
 198
 199 /*****/
 200
 201 static void
 202 pas_mixer_reset(void)
 203 {
 204         int             foo;
 205
 206         DEB(printk("pas2_mixer.c: void pas_mixer_reset(void)\n"));
 207
 208         for (foo = 0; foo < SOUND_MIXER_NRDEVICES; foo++)
 209                 pas_mixer_set(foo, levels[foo]);
 210
 211         set_mode(0x04 | 0x01);
 212 }
 213
 214 static int pas_mixer_ioctl(int dev, unsigned int cmd, caddr_t arg)
 215 {
 216         int level,v ;
 217
 218         DEB(printk("pas2_mixer.c: int pas_mixer_ioctl(unsigned int cmd = %X, unsigned int arg = %X)\n", cmd, arg));
 219         if (cmd == SOUND_MIXER_PRIVATE1) { /* Set loudness bit */
 220                 if (get_user(level, (int *)arg))
 221                         return -EFAULT;
 222                 if (level == -1)  /* Return current settings */
 223                         level = (mode_control & 0x04);
 224                 else {
 225                         mode_control &= ~0x04;
 226                         if (level)
 227                                 mode_control |= 0x04;
 228                         set_mode(mode_control);
 229                 }
 230                 level = !!level;
 231                 return put_user(level, (int *)arg);
 232         }
 233         if (cmd == SOUND_MIXER_PRIVATE2) { /* Set enhance bit */
 234                 if (get_user(level, (int *)arg))
 235                         return -EFAULT;
 236                 if (level == -1) { /* Return current settings */
 237                         if (!(mode_control & 0x03))
 238                                 level = 0;
 239                         else
 240                                 level = ((mode_control & 0x03) + 1) * 20;
 241                 } else {
 242                         int i = 0;
 243
 244                         level &= 0x7f;
 245                         if (level)
 246                                 i = (level / 20) - 1;
 247                         mode_control &= ~0x03;
 248                         mode_control |= i & 0x03;
 249                         set_mode(mode_control);
 250                         if (i)
 251                                 i = (i + 1) * 20;
 252                         level = i;
 253                 }
 254                 return put_user(level, (int *)arg);
 255         }
 256         if (cmd == SOUND_MIXER_PRIVATE3) { /* Set mute bit */
 257                 if (get_user(level, (int *)arg))
 258                         return -EFAULT;
 259                 if (level == -1)        /* Return current settings */
 260                         level = !(pas_read(0x0B8A) & 0x20);
 261                 else {
 262                         if (level)
 263                                 pas_write(pas_read(0x0B8A) & (~0x20), 0x0B8A);
 264                         else
 265                                 pas_write(pas_read(0x0B8A) | 0x20, 0x0B8A);
 266
 267                         level = !(pas_read(0x0B8A) & 0x20);
 268                 }
 269                 return put_user(level, (int *)arg);
 270         }
 271         if (((cmd >> 8) & 0xff) == 'M') {
 272                 if (get_user(v, (int *)arg))
 273                         return -EFAULT;
 274                 if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
 275                         v = pas_mixer_set(cmd & 0xff, v);
 276                 } else {
 277                         switch (cmd & 0xff) {
 278                         case SOUND_MIXER_RECSRC:
 279                                 v = rec_devices;
 280                                 break;
 281
 282                         case SOUND_MIXER_STEREODEVS:
 283                                 v = SUPPORTED_MIXER_DEVICES & ~(SOUND_MASK_BASS | SOUND_MASK_TREBLE);
 284                                 break;
 285
 286                         case SOUND_MIXER_DEVMASK:
 287                                 v = SUPPORTED_MIXER_DEVICES;
 288                                 break;
 289
 290                         case SOUND_MIXER_RECMASK:
 291                                 v = POSSIBLE_RECORDING_DEVICES & SUPPORTED_MIXER_DEVICES;
 292                                 break;
 293
 294                         case SOUND_MIXER_CAPS:
 295                                 v = 0;  /* No special capabilities */
 296                                 break;
 297
 298                         default:
 299                                 v = levels[cmd & 0xff];
 300                                 break;
 301                         }
 302                 }
 303                 return put_user(v, (int *)arg);
 304         }
 305         return -EINVAL;
 306 }
 307
 308 static struct mixer_operations pas_mixer_operations =
 309 {
 310         "PAS16",
 311         "Pro Audio Spectrum 16",
 312         pas_mixer_ioctl
 313 };
 314
 315 int
 316 pas_init_mixer(void)
 317 {
 318         int             d;
 319
 320         levels = load_mixer_volumes("PAS16_1", default_levels, 1);
 321
 322         pas_mixer_reset();
 323
 324         if ((d = sound_alloc_mixerdev()) != -1)
 325           {
 326                   audio_devs[pas_audiodev]->mixer_dev = d;
 327                   mixer_devs[d] = &pas_mixer_operations;
 328           }
 329         return 1;
 330 }