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kernel/linux-imx6_3.14.28/Documentation/sound/oss/ultrasound 1.02 KB
6b13f685e   김민수   BSP 최초 추가
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  modprobe sound
  insmod ad1848
  insmod gus io=* irq=* dma=* ...
  
  This loads the driver for the Gravis Ultrasound family of sound cards.
  
  The gus module takes the following arguments
  
  io		I/O address of the Ultrasound card (eg. io=0x220)
  irq		IRQ of the Sound Blaster card 
  dma     	DMA channel for the Sound Blaster
  dma16   	2nd DMA channel, only needed for full duplex operation
  type		1 for PnP card
  gus16		1 for using 16 bit sampling daughter board
  no_wave_dma	Set to disable DMA usage for wavetable (see note)
  db16		???
  
  
  no_wave_dma option
  
  This option defaults to a value of 0, which allows the Ultrasound wavetable
  DSP to use DMA for playback and downloading samples. This is the same
  as the old behaviour. If set to 1, no DMA is needed for downloading samples,
  and allows owners of a GUS MAX to make use of simultaneous digital audio
  (/dev/dsp), MIDI, and wavetable playback.
  
  
  If you have problems in recording with GUS MAX, you could try to use
  just one 8 bit DMA channel. Recording will not work with one DMA
  channel if it's a 16 bit one.