CS4236_VERSION
ver2 = snd_cs4236_ext_in(chip, CS4236_VERSION);
rev = snd_cs4236_ext_in(chip, CS4236_VERSION);
snd_cs4236_ext_out(chip, CS4236_VERSION, 0xff);
id = snd_cs4236_ext_in(chip, CS4236_VERSION);
snd_cs4236_ext_out(chip, CS4236_VERSION, rev);