Hi all,
I am currently working on an AC'97 driver for ATMEL boards(AT91), and I encounter some problems. On the board we have an AD1981b, and looking at the file ac97_patch.c I was wondering in the function patch_ad1881 why is there 3 codecs? I've got the AD1981b datasheet, but the registers description is not really clear to me(vendor id register).
My problem is: when I try to read this registers(vendor id) during the probe(in snd_ac97_mixer), it will fail, and from time to time I will even not be able to recognize the codec...
So my question is: is that normal that in the function patch_ad1881 the code fails to read these lines: codecs[1] = patch_ad1881_unchained(ac97, 1, (1<<14)); codecs[2] = patch_ad1881_unchained(ac97, 2, (1<<13));
Regards, Sedji