snd_hda_mul..._analog_open(9)

📦 version 7.3.1, in nixpkgs unstable

💖 snd_hda_mul..._analog_open(9) — the Kernel API Manual glow-up 🎀

okay bestie, so this one lives in the Kernel API Manual, section 9 (kernel interfaces, iykyk), and it's literally just about opening up your analog outputs. short page, big main character energy. let's go ✨

✨ NAME ✨

snd_hda_multi_out_analog_open — open analog outputs 🎧

🌸 SYNOPSIS 🌸

int snd_hda_multi_out_analog_open (struct hda_codec *codec , struct
       hda_multi_out *mout , struct snd_pcm_substream *substream , struct
       hda_pcm_stream *hinfo );

so it returns an int, and it takes four things. that's it. that's the whole vibe check. 💅

🦋 ARGUMENTS 🦋

  • codec — the HDA codec 🎛️ like, the actual chip-side situation.
  • mout — an hda_multi_out object. yes girl, the whole multi-out struct.
  • substream — the PCM substream you're assigning. pasting it in, no cap.
  • hinfo — the PCM information you're assigning. also getting set. 🫶

👑 DESCRIPTION 👑

so what does it actually do? it opens the analog outputs and sets up the hw-constraints. that's the job. iconic behavior, honestly.

and then there's the little bonus clause: if the digital outputs can be opened as a follower, it opens the digital outputs too. 🎀 not me giving you extra functionality on the side, slay.

fr fr, that "if" is doing real work — the digital outputs only get opened when they can be opened as a follower. don't skip the conditional bestie.

🔥 SEE ALSO 🔥

it's giving linked list of destiny, because this page has a lot of friends. all of these, exactly as written, bestie — go read them if you want the full lore 📚

Kernel file ./sound/hda/common/codec.c, plus:

and that's the whole page, bestie 💜 it also points you at the source dir ./sound/hda/common — and the page itself is dated October 2026 🗓️✨ go open some analog outputs, you've got this 🫶🎀

📦 where this page comes from