kernel/sound/oss/pas2_mixer.c

   1
   2 /*
   3  * sound/oss/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  * Bartlomiej Zolnierkiewicz : added __init to pas_init_mixer()
  18  */
  19 #include <linux/init.h>
  20 #include "sound_config.h"
  21
  22 #include "pas2.h"
  23
  24 extern int      pas_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;
  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 + pas_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         left = level & 0x7f;
 120         right = (level & 0x7f00) >> 8;
 121
 122         if (whichDev < SOUND_MIXER_NRDEVICES) {
 123                 if ((1 << whichDev) & rec_devices)
 124                         mixer = 0x20;
 125                 else
 126                         mixer = 0x00;
 127         }
 128
 129         switch (whichDev)
 130           {
 131           case SOUND_MIXER_VOLUME:      /* Master volume (0-63) */
 132                   levels[whichDev] = mixer_output(right, left, 63, 0x01, 0);
 133                   break;
 134
 135                   /*
 136                    * Note! Bass and Treble are mono devices. Will use just the left
 137                    * channel.
 138                    */
 139           case SOUND_MIXER_BASS:        /* Bass (0-12) */
 140                   levels[whichDev] = mixer_output(right, left, 12, 0x03, 0);
 141                   break;
 142           case SOUND_MIXER_TREBLE:      /* Treble (0-12) */
 143                   levels[whichDev] = mixer_output(right, left, 12, 0x04, 0);
 144                   break;
 145
 146           case SOUND_MIXER_SYNTH:       /* Internal synthesizer (0-31) */
 147                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x00, mixer);
 148                   break;
 149           case SOUND_MIXER_PCM: /* PAS PCM (0-31) */
 150                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x05, mixer);
 151                   break;
 152           case SOUND_MIXER_ALTPCM:      /* SB PCM (0-31) */
 153                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x07, mixer);
 154                   break;
 155           case SOUND_MIXER_SPEAKER:     /* PC speaker (0-31) */
 156                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x06, mixer);
 157                   break;
 158           case SOUND_MIXER_LINE:        /* External line (0-31) */
 159                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x02, mixer);
 160                   break;
 161           case SOUND_MIXER_CD:  /* CD (0-31) */
 162                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x03, mixer);
 163                   break;
 164           case SOUND_MIXER_MIC: /* External microphone (0-31) */
 165                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x04, mixer);
 166                   break;
 167           case SOUND_MIXER_IMIX:        /* Recording monitor (0-31) (Output mixer only) */
 168                   levels[whichDev] = mixer_output(right, left, 31, 0x10 | 0x01,
 169                                                   0x00);
 170                   break;
 171           case SOUND_MIXER_RECLEV:      /* Recording level (0-15) */
 172                   levels[whichDev] = mixer_output(right, left, 15, 0x02, 0);
 173                   break;
 174
 175
 176           case SOUND_MIXER_RECSRC:
 177                   devmask = level & POSSIBLE_RECORDING_DEVICES;
 178
 179                   changed = devmask ^ rec_devices;
 180                   rec_devices = devmask;
 181
 182                   for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
 183                           if (changed & (1 << i))
 184                             {
 185                                     pas_mixer_set(i, levels[i]);
 186                             }
 187                   return rec_devices;
 188                   break;
 189
 190           default:
 191                   return -EINVAL;
 192           }
 193
 194         return (levels[whichDev]);
 195 }
 196
 197 /*****/
 198
 199 static void
 200 pas_mixer_reset(void)
 201 {
 202         int             foo;
 203
 204         for (foo = 0; foo < SOUND_MIXER_NRDEVICES; foo++)
 205                 pas_mixer_set(foo, levels[foo]);
 206
 207         set_mode(0x04 | 0x01);
 208 }
 209
 210 static int pas_mixer_ioctl(int dev, unsigned int cmd, void __user *arg)
 211 {
 212         int level,v ;
 213         int __user *p = (int __user *)arg;
 214
 215         if (cmd == SOUND_MIXER_PRIVATE1) { /* Set loudness bit */
 216                 if (get_user(level, p))
 217                         return -EFAULT;
 218                 if (level == -1)  /* Return current settings */
 219                         level = (mode_control & 0x04);
 220                 else {
 221                         mode_control &= ~0x04;
 222                         if (level)
 223                                 mode_control |= 0x04;
 224                         set_mode(mode_control);
 225                 }
 226                 level = !!level;
 227                 return put_user(level, p);
 228         }
 229         if (cmd == SOUND_MIXER_PRIVATE2) { /* Set enhance bit */
 230                 if (get_user(level, p))
 231                         return -EFAULT;
 232                 if (level == -1) { /* Return current settings */
 233                         if (!(mode_control & 0x03))
 234                                 level = 0;
 235                         else
 236                                 level = ((mode_control & 0x03) + 1) * 20;
 237                 } else {
 238                         int i = 0;
 239
 240                         level &= 0x7f;
 241                         if (level)
 242                                 i = (level / 20) - 1;
 243                         mode_control &= ~0x03;
 244                         mode_control |= i & 0x03;
 245                         set_mode(mode_control);
 246                         if (i)
 247                                 i = (i + 1) * 20;
 248                         level = i;
 249                 }
 250                 return put_user(level, p);
 251         }
 252         if (cmd == SOUND_MIXER_PRIVATE3) { /* Set mute bit */
 253                 if (get_user(level, p))
 254                         return -EFAULT;
 255                 if (level == -1)        /* Return current settings */
 256                         level = !(pas_read(0x0B8A) & 0x20);
 257                 else {
 258                         if (level)
 259                                 pas_write(pas_read(0x0B8A) & (~0x20), 0x0B8A);
 260                         else
 261                                 pas_write(pas_read(0x0B8A) | 0x20, 0x0B8A);
 262
 263                         level = !(pas_read(0x0B8A) & 0x20);
 264                 }
 265                 return put_user(level, p);
 266         }
 267         if (((cmd >> 8) & 0xff) == 'M') {
 268                 if (get_user(v, p))
 269                         return -EFAULT;
 270                 if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
 271                         v = pas_mixer_set(cmd & 0xff, v);
 272                 } else {
 273                         switch (cmd & 0xff) {
 274                         case SOUND_MIXER_RECSRC:
 275                                 v = rec_devices;
 276                                 break;
 277
 278                         case SOUND_MIXER_STEREODEVS:
 279                                 v = SUPPORTED_MIXER_DEVICES & ~(SOUND_MASK_BASS | SOUND_MASK_TREBLE);
 280                                 break;
 281
 282                         case SOUND_MIXER_DEVMASK:
 283                                 v = SUPPORTED_MIXER_DEVICES;
 284                                 break;
 285
 286                         case SOUND_MIXER_RECMASK:
 287                                 v = POSSIBLE_RECORDING_DEVICES & SUPPORTED_MIXER_DEVICES;
 288                                 break;
 289
 290                         case SOUND_MIXER_CAPS:
 291                                 v = 0;  /* No special capabilities */
 292                                 break;
 293
 294                         default:
 295                                 v = levels[cmd & 0xff];
 296                                 break;
 297                         }
 298                 }
 299                 return put_user(v, p);
 300         }
 301         return -EINVAL;
 302 }
 303
 304 static struct mixer_operations pas_mixer_operations =
 305 {
 306         .owner  = THIS_MODULE,
 307         .id     = "PAS16",
 308         .name   = "Pro Audio Spectrum 16",
 309         .ioctl  = pas_mixer_ioctl
 310 };
 311
 312 int __init
 313 pas_init_mixer(void)
 314 {
 315         int             d;
 316
 317         levels = load_mixer_volumes("PAS16_1", default_levels, 1);
 318
 319         pas_mixer_reset();
 320
 321         if ((d = sound_alloc_mixerdev()) != -1)
 322           {
 323                   audio_devs[pas_audiodev]->mixer_dev = d;
 324                   mixer_devs[d] = &pas_mixer_operations;
 325           }
 326         return 1;
 327 }