snd_hda_mixer_amp_tlv(9)

📦 version 7.3.1, in nixpkgs unstable

💅 snd_hda_mixer_amp_tlv — the Kernel API Manual page, bestie edition 🎀

okay so real talk, this is snd_hda_mixer_amp_tlv(9) from the Kernel API Manual, and it's literally a TLV callback for a standard AMP mixer volume ✨ like that's the whole vibe. tiny page, iconic energy, let's get into it 🦋

✨ NAME ✨

snd_hda_mixer_amp_tlv — the TLV callback for a standard AMP mixer volume. that's it, that's the function, she's a callback and she serves 💅

🌸 SYNOPSIS 🌸

int snd_hda_mixer_amp_tlv (struct snd_kcontrol *kcontrol , int op_flag ,
unsigned int size , unsigned int __user *_tlv );

not me copying the signature exactly so you don't have to squint at it 😭 take it, it's yours 🫶

🦋 ARGUMENTS 🦋

  • kcontrol — ctl element. this is the control element you're working with, she's the main character obvi 👑
  • op_flag — operation flag. the flag telling you what operation is going down.
  • size — byte size of input TLV. yes babe, in bytes 🔥
  • _tlv — TLV data. the actual TLV payload, right there, __user and everything 🙈

🌈 DESCRIPTION 🌈

okay so here's the tea: the control element is supposed to have its private_value field set up via HDA_COMPOSE_AMP_VAL*() or related macros. like that's the whole precondition, no cap. if you skipped that step that's on you bestie 😭

fr fr, the description is short and she means it — private_value comes from HDA_COMPOSE_AMP_VAL*() or the related macros, periodt ✨

⭐ SEE ALSO ⭐

the kernel file is ./sound/hda/common/codec.c and here's the whole friend group, iykyk 💜

and that's the page!! every single one of those references is here because i would never do you dirty like that 💖

okay so this little cutie lives under ./sound/hda/common and the date on her birth certificate says October 2026 🌸 so yeah, that's the source path and the date, consider it signed, sealed, and slayed 💅✨ mwah 🫶

📦 where this page comes from