Re: [alsa-devel] Where is simple mixer control "Surround" defined for ac97 or via82xx? I cant find it anywhere in ac97....

John L. Utz III wrote:

amixer controls | grep Surround numid=20,iface=MIXER,name='Surround Playback Switch' numid=21,iface=MIXER,name='Surround Playback Volume'

But for the life of me, i cant find the code that implements it!

Around line 1350 in ac97_codec.c:

/* build surround controls */ if ((snd_ac97_try_volume_mix(ac97, AC97_SURROUND_MASTER)) && !(ac97->flags & AC97_AD_MULTI)) { /* Surround Master (0x38) is with stereo mutes */ if ((err = snd_ac97_cmix_new_stereo(card, "Surround Playback", AC97_SURROUND_MASTER, 1, 0, ac97)) < 0) return err; }

HTH Clemens