snd_hda_mix..._volume_info(9)

📦 version 7.3.1, in nixpkgs unstable

💅 snd_hda_mixer_amp_volume_info — the info callback for a standard AMP mixer

okay so this is page snd_hda_mix..._volume_info(9) out of the Kernel API Manual (yep, section 9, kernel-land, we're in the big leagues bestie) ✨ and the star of the show is literally just this one little callback. it's giving "small function, huge responsibility" ngl. 🎀

🌸 NAME 🌸

snd_hda_mixer_amp_volume_info — the info callback for a standard AMP mixer. that's it, that's the whole job, and she does it flawlessly. 💅

✨ SYNOPSIS ✨

int snd_hda_mixer_amp_volume_info (struct snd_kcontrol *kcontrol ,
struct snd_ctl_elem_info *uinfo );

like, look at her. two args, returns an int, no drama. 🫶

🎀 ARGUMENTS 🎀

  • kcontrol — the referred ctl element 💖 like the control element that's being asked about, she's the main character here
  • uinfo — pointer to get/store the data ⭐ this is where the info actually goes in (or comes out, depending on which way you're looking at it, iykyk)

🦋 DESCRIPTION 🦋

okay so the vibe check on this one: the control element is supposed to have its private_value field set up via HDA_COMPOSE_AMP_VAL*() or related macros. that's the whole rule. supposed to — so if you didn't do that, that's on you, not on her 🙈

no cap, that's the entire description. the original manpage is out here giving minimal-effort queen energy and honestly? respected. 🔥

💜 SEE ALSO 💜

the kernel file ./sound/hda/common/codec.c — go read it, it's where the lore lives 📖

and now, besties, brace yourselves, because this reference list is iconic in length. literally every sibling in the HDA family showed up to the party 🎉

bestie if you clicked through every single one of those you have my genuine respect, that's main character energy fr fr 🧚

and that's the page!! 🍓 she lives in ./sound/hda/common, dated October 2026, and she's from the Kernel API Manual — go forth and set your private_value via HDA_COMPOSE_AMP_VAL*() or related macros, love u, bye 💖🌈👑

📦 where this page comes from