sound.txt 3.3 KB

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  1. Information about PowerPC Sound support
  2. =====================================================================
  3. Please mail me (Cort Dougan, cort@fsmlabs.com) if you have questions,
  4. comments or corrections.
  5. Last Change: 6.16.99
  6. This just covers sound on the PReP and CHRP systems for now and later
  7. will contain information on the PowerMac's.
  8. Sound on PReP has been tested and is working with the PowerStack and IBM
  9. Power Series onboard sound systems which are based on the cs4231(2) chip.
  10. The sound options when doing the make config are a bit different from
  11. the default, though.
  12. The I/O base, irq and dma lines that you enter during the make config
  13. are ignored and are set when booting according to the machine type.
  14. This is so that one binary can be used for Motorola and IBM machines
  15. which use different values and isn't allowed by the driver, so things
  16. are hacked together in such a way as to allow this information to be
  17. set automatically on boot.
  18. 1. Motorola PowerStack PReP machines
  19. Enable support for "Crystal CS4232 based (PnP) cards" and for the
  20. Microsoft Sound System. The MSS isn't used, but some of the routines
  21. that the CS4232 driver uses are in it.
  22. Although the options you set are ignored and determined automatically
  23. on boot these are included for information only:
  24. (830) CS4232 audio I/O base 530, 604, E80 or F40
  25. (10) CS4232 audio IRQ 5, 7, 9, 11, 12 or 15
  26. (6) CS4232 audio DMA 0, 1 or 3
  27. (7) CS4232 second (duplex) DMA 0, 1 or 3
  28. This will allow simultaneous record and playback, as 2 different dma
  29. channels are used.
  30. The sound will be all left channel and very low volume since the
  31. auxiliary input isn't muted by default. I had the changes necessary
  32. for this in the kernel but the sound driver maintainer didn't want
  33. to include them since it wasn't common in other machines. To fix this
  34. you need to mute it using a mixer utility of some sort (if you find one
  35. please let me know) or by patching the driver yourself and recompiling.
  36. There is a problem on the PowerStack 2's (PowerStack Pro's) using a
  37. different irq/drq than the kernel expects. Unfortunately, I don't know
  38. which irq/drq it is so if anyone knows please email me.
  39. Midi is not supported since the cs4232 driver doesn't support midi yet.
  40. 2. IBM PowerPersonal PReP machines
  41. I've only tested sound on the Power Personal Series of IBM workstations
  42. so if you try it on others please let me know the result. I'm especially
  43. interested in the 43p's sound system, which I know nothing about.
  44. Enable support for "Crystal CS4232 based (PnP) cards" and for the
  45. Microsoft Sound System. The MSS isn't used, but some of the routines
  46. that the CS4232 driver uses are in it.
  47. Although the options you set are ignored and determined automatically
  48. on boot these are included for information only:
  49. (530) CS4232 audio I/O base 530, 604, E80 or F40
  50. (5) CS4232 audio IRQ 5, 7, 9, 11, 12 or 15
  51. (1) CS4232 audio DMA 0, 1 or 3
  52. (7) CS4232 second (duplex) DMA 0, 1 or 3
  53. (330) CS4232 MIDI I/O base 330, 370, 3B0 or 3F0
  54. (9) CS4232 MIDI IRQ 5, 7, 9, 11, 12 or 15
  55. This setup does _NOT_ allow for recording yet.
  56. Midi is not supported since the cs4232 driver doesn't support midi yet.
  57. 2. IBM CHRP
  58. I have only tested this on the 43P-150. Build the kernel with the cs4232
  59. set as a module and load the module with irq=9 dma=1 dma2=2 io=0x550