dmub_srv_send_gpint_command(9)

📦 version 7.3.1, in nixpkgs unstable

👑 dmub_srv_send_gpint_command — Kernel API Manual tea time ✨

okay so bestie, gather round, because we're about to get into dmub_srv_send_gpint_command from the Kernel API Manual — this is the section dmub_srv_send_gpint_command(9) and she is, and I say this with my whole chest, that girl. 💅

🌸 NAME 🌸

dmub_srv_send_gpint_command — Sends a GPINT based command.

like, she literally sends a GPINT based command. no notes. 🎀

✨ SYNOPSIS ✨

enum dmub_status dmub_srv_send_gpint_command (struct dmub_srv *dmub ,
enum dmub_gpint_command command_code , uint16_t param , uint32_t
timeout_us );

look at her signature, she's gorgeous 🦋

🫶 ARGUMENTS 🫶

  • dmub — the dmub service. your main character, the whole vibe. 👑
  • command_code — the command code to send. like the actual message you're sliding into the GPINT's DMs. 💌
  • param — the command parameter to send. the little extra details attached, iykyk. 🍓
  • timeout_us — the maximum number of microseconds to wait. queen has limits and honestly? valid. ⏳

💜 DESCRIPTION 💜

So basically: she sends a command via the general purpose interrupt (GPINT). that's the whole assignment and she ate. 🔥

Then — and this is the part where you gotta be patient — she waits for the number of microseconds specified by timeout_us for the command ACK before returning. not a single second longer, not a single second less, she's got places to be. 😭

Oh and good news bestie: she can be called after software initialization. so once everything's set up, you're free to call her, no cap. ⭐

🌈 RETURN 🌈

the vibes she may come back with, fr fr:

  • DMUB_STATUS_OK — success. we love a happy ending. 🎀✨
  • DMUB_STATUS_TIMEOUT — wait for ACK timed out. she waited, she gave it her all, and the ACK simply did not show up. 💀
  • DMUB_STATUS_INVALID — unspecified error. mysterious, iconic, unhelpful. 🙈

💖 SEE ALSO 💖

the full bestie group chat, in the order she says them:

ngl that's a lot of friends but she's a social butterfly, what can I say 🦋

okay that's the whole page bestie, mwah 💋 — brought to you by ./drivers/gpu/drm/amd/display/..., October 2026, and the one and only dmub_srv_send_gpint_command(9). go forth and send those GPINT commands, periodt. 🧚‍♀️💜

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