ac97_setrate
ch->spd = ((uint64_t)ac97_setrate(sc->codec, ch->spdreg, r) *
return (ac97_setrate(via->codec, AC97_REGEXT_LADCRATE, speed));
return (ac97_setrate(via->codec, AC97_REGEXT_FDACRATE, speed));
return ac97_setrate(via->codec, reg, speed);
int ac97_setrate(struct ac97_info *codec, int which, int rate);