Hi silicom, On Fri, 2007-07-13 at 13:22 +0800, silicom wrote: > I have a simple oss ac97 playback driver for xilinx ml403 and > linux2.6.17 kernel,but when I test it with a *.wav file with sample > rate 44.1k, there is much noisy, and I want to know whether there's > problem with my ml403 board or ac97 driver,could anyone be kind to > help me test it on your board or point out my problem?
Today I took some time and tried to compile your driver, but one of the first things I saw was that there is a file missing: "xac97_l.h". I think, it contains your "low level" functions. If you post the file, and I have some time, I'll test your driver and what it does on the board, which I have available. Furthermore your driver depends on xbasic_types.c/h, xio.c/h, which some people might not have, too ... especially xio.c/h (in my experience ;-) ) ... In my last mail (last week) I announced my driver for the AC97 Controller of Xilinx and said that I'm going to release/post it. Since then, I worked on it once more and now it seems to be pretty stable and usable (playback support). I added capture support, too. [Capturing basically works, but there is a problem with higher rates and ALSA not reading from the intermediate buffer anymore ... not yet investigated.] My driver will be published on a website soon. I'll post the link as soon as possible. Meanwhile, if you or anyone want to try it, just mail me ([EMAIL PROTECTED]). Joachim
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