snd_hdac_bus_send_cmd(9)

📦 version 7.3.1, in nixpkgs unstable

✨ snd_hdac_bus_send_cmd(9) ✨

Okay so bestie, welcome to the snd_hdac_bus_send_cmd page — it's part of the Kernel API Manual, and honestly it's giving "tiny function, big responsibilities." 💅

🌸 NAME 🌸

snd_hdac_bus_send_cmd — literally just: send a command verb via CORB or PIO. That's the whole vibe. 🎀

🦋 SYNOPSIS 🦋

int snd_hdac_bus_send_cmd (struct hdac_bus *bus , unsigned int val );

Like, that's it. Two args, one int coming back at you. Iconic minimalism. ✨

💖 ARGUMENTS 💖

  • bus — the HD-audio core bus, aka the main character of this whole operation 👑
  • val — the encoded verb value you're sending out into the world 🚀

🔥 DESCRIPTION 🔥

So what does it actually do? It sends your command verb via CORB or PIO, and then it tells you how it went:

  • returns zero for success 🎉
  • returns a negative error code when things did NOT slay 😭

No cap, that's the entire description. Simple, clean, no notes. 🫶

👑 SEE ALSO 👑

Kernel file ./sound/hda/core/controller.c and its whole friend group — go say hi:

💫 and that's the page, bestie 💫

Cute little sign-off before you go: this whole thing lives in ./sound/hda/core, it's dated October 2026, and the manual is snd_hdac_bus_send_cmd(9). Go forth and send those verbs. 🧚💜

📦 where this page comes from