drivers/sound/dmasound.h

   1
   2 /* linux/drivers/sound/dmasound.h */
   3
   4 /*
   5  * Minor numbers for the sound driver.
   6  *
   7  * Unfortunately Creative called the codec chip of SB as a DSP. For this
   8  * reason the /dev/dsp is reserved for digitized audio use. There is a
   9  * device for true DSP processors but it will be called something else.
  10  * In v3.0 it's /dev/sndproc but this could be a temporary solution.
  11  */
  12
  13 #define SND_NDEVS       256     /* Number of supported devices */
  14 #define SND_DEV_CTL     0       /* Control port /dev/mixer */
  15 #define SND_DEV_SEQ     1       /* Sequencer output /dev/sequencer (FM
  16                                    synthesizer and MIDI output) */
  17 #define SND_DEV_MIDIN   2       /* Raw midi access */
  18 #define SND_DEV_DSP     3       /* Digitized voice /dev/dsp */
  19 #define SND_DEV_AUDIO   4       /* Sparc compatible /dev/audio */
  20 #define SND_DEV_DSP16   5       /* Like /dev/dsp but 16 bits/sample */
  21 #define SND_DEV_STATUS  6       /* /dev/sndstat */
  22 /* #7 not in use now. Was in 2.4. Free for use after v3.0. */
  23 #define SND_DEV_SEQ2    8       /* /dev/sequencer, level 2 interface */
  24 #define SND_DEV_SNDPROC 9       /* /dev/sndproc for programmable devices */
  25 #define SND_DEV_PSS     SND_DEV_SNDPROC
  26
  27 #define DSP_DEFAULT_SPEED       8000
  28
  29 #define ON              1
  30 #define OFF             0
  31
  32 #define MAX_AUDIO_DEV   5
  33 #define MAX_MIXER_DEV   2
  34 #define MAX_SYNTH_DEV   3
  35 #define MAX_MIDI_DEV    6
  36 #define MAX_TIMER_DEV   3