readme.txt

Source files for pxa ac97 sound driver The packet contains the files that is listed below driv

Source files for pxa ac97 sound driver
========================================

The packet contains the files that is listed below

driver files
  /SOURCE/drivers/sound
    Makefile ac97.c ac97.h ac97_codec.c pxa-ac97.c
    pxa-audio.c pxa-audio.h sound_core.c
  /SOURCE/include/linux
    soundcard.h

module files
    initsnd(a bash file to load drivers)
    soundcore.o ac97_codec.o pxa-audio.o pxa-ac97.o

test files
  source
    play.c rec.c soundcard.h fmtheaders.h
  executable
    play rec

sample wave file
    BOMB.wav

How to install and test the driver
  1.Copy the "driver files" to the destination directory, where "SOURCE" is the linux kernel root directory.
  2.Type "make menuconfig" in the linux kernel root directory. Choose "Sound" and select "Sound support" and "Intel PXA250/210 AC97 audio" as modules then save the config.
  3.Type "make modules" in the same directory to compile module drivers. After this, it will produce "soundcore.o" "ac97_codec.o" "pxa-audio.o" "pxa-ac97.o" in the /SOURCE/drivers/sound directory.
  4.Copy the 4 ".o" files to a driver directory and copy the initsnd to the same directory. Boot up the destination machine and type "./initsnd" in the driver directory to install the driver or you can add the command to start-up shell.
  5.Type "arm-linux-gcc -o play play.c" and "arm-linux-gcc -o rec rec.c" to make the executable test files or you can directly use "play" and "rec" in the packet instead(they are compiled for arm architecture).
  6.Type "./play BOMB.wav" to test the play function and type "./rec filename" to test the record function. Note that the record function should be terminated by CTRL+c when you do not want it to record anymore.