snd_hda_activate_path(9)

📦 version 7.3.1, in nixpkgs unstable

👑 snd_hda_activate_path — bestie edition

okay so this is a page from the Kernel API Manual, and it's literally about flipping a path on or off 🎀 like a light switch but for audio routing, no cap.

✨ NAME ✨

snd_hda_activate_path — activate or deactivate the given path 💅

🌸 SYNOPSIS 🌸

void snd_hda_activate_path (struct hda_codec *codec , struct nid_path *path , bool enable , bool add_aamix );

she takes four args and returns nothing. void. iconic, low-maintenance, does her job and leaves 🫶

💖 ARGUMENTS 💖

  • codec — the HDA codec. it's giving "the whole audio chip situation", she's the main character here 👑
  • path — the path to activate/deactivate. this is the thing you're flicking on or off 🦋
  • enable — flag to activate or not. true = go, false = girl bye 💀
  • add_aamix — enable the input from aamix NID. the extra little sprinkle ✨

🌈 DESCRIPTION 🌈

so here's the tea 🍓 — if add_aamix is set, you also enable the input from the aa-mix NID as well (if any). that's it. that's the whole vibe. "if any" is doing a lot of heavy lifting there so don't come for me 🙈

🧚 SEE ALSO 🧚

kernel file ./sound/hda/codecs/generic.c and honestly her whole friend group:

like, go read them. iykyk 💜

and that's the whole page bestie!! this one lives in ./sound/hda/codecs and it's dated October 2026 — so she's from the future, which honestly tracks 🔥 stay hydrated, read your kernel docs, mwah 💋

📦 where this page comes from