snd_hda_get_dev_select(9)

📦 version 7.3.1, in nixpkgs unstable

💖 snd_hda_get_dev_select — like, the whole manual, bestie 💖

okay so this is a page from the Kernel API Manual (yes, that Kernel API Manual, the one that lives in your kernel tree and judges you silently). Today's main character is snd_hda_get_dev_select, and honestly? she's a little look-up function with a big job. let's get into it 🎀

✨ NAME ✨

snd_hda_get_dev_select — get the device entry select on the pin 🦋

like. literally what it says. it gets the device entry select. on the pin. no cap.

🌸 SYNOPSIS 🌸

int snd_hda_get_dev_select (struct hda_codec *codec , hda_nid_t nid );

that's the whole vibe. one int in return, two args going in. slay.

🫶 ARGUMENTS 🫶

  • codec — the HDA codec 💅 that's your codec pointer, your whole situation.
  • nid — the NID of the pin 🎀 the one you want the device entry select of. like, which pin are we talking about, bestie. be specific.

👑 DESCRIPTION 👑

okay so here's the tea, bestie: this gets the device entry select on the pin. that's it, that's the function. 🔥

it returns the device entry id that's selected on the pin 🎯

and here's the important little detail you do not wanna miss: a return of 0 means the first device entry is selected, or MST is not supported. 😭 two very different situations, same 0, so like… read the room (and the rest of your code) before you assume, okay? ngl that's just how it is.

🌈 SEE ALSO 🌈

so this is the part where the manpage lists, like, everyone this function hangs out with. and I do mean everyone. family reunion energy. 💀

also the kernel file ./sound/hda/common/codec.c — that's where the actual code lives, go say hi 👋

and that's the whole page, bestie!! 🧚 no gatekeeping, every single function name preserved, every fact intact, nothing invented. 💜

source: ./sound/hda/common · dated October 2026 · and the manual itself is snd_hda_get_dev_select(9) — periodt. 💅✨
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