radeon_irq_kms_enable_hpd(9)

📦 version 7.3.1, in nixpkgs unstable

💅 radeon_irq_kms_enable_hpd(9) — like, the Kernel API Manual page, bestie 🎀

okay so real talk, this whole page lives in the Kernel API Manual and it's about one tiny function that makes your monitor's "hey I got plugged in!!" interrupt actually fire. it's giving ✨unsung hero✨ energy, ngl.

🌸 NAME 🌸

radeon_irq_kms_enable_hpd — turn on the hotplug detect interrupt 🔌✨

like... the function that goes "bestie, something just got plugged into the port" and the kernel actually listens. iconic behaviour fr fr.

✨ SYNOPSIS ✨

void radeon_irq_kms_enable_hpd (struct radeon_device *rdev , unsigned hpd_mask );

that's it. that's the whole function. no return value, she just does the thing and dips 💅 (void, yk? no receipts, no return address).

🫶 ARGUMENTS 🫶

  • rdev — the radeon device pointer. literally the radeon device itself, hand it over, she needs it, don't ask questions 💖
  • hpd_mask — the mask of hpd pins you want to enable. one bit per pin, pick your faves, mask them in 🎀

🔥 DESCRIPTION 🔥

okay so here's the whole vibe: this thing enables the hotplug detect interrupt for a specific hpd pin, and it does it on all asics 👑

no caveats, no "only on the new ones", no fine print. every single asic gets the love. slay. 🌈

so when something gets plugged into that hpd pin, the interrupt fires and the kernel notices. that's the whole plot, no cap. 🦋

🧚 SEE ALSO 🧚

the source lives right here, iykyk:

Kernel file ./drivers/gpu/drm/radeon/radeon_irq_kms.c

and the whole friend group is in there too, all of them, in this exact order, do not come for me:

(and yes, radeon_irq_kms_disable_hpd(9) is literally right there. she's the opposite twin. the duality of woman 💀)

lowkey reminder: this page ships out of ./drivers/gpu/drm/radeon, dated October 2026. that's the source, the version vibe, and the date, all in one. kiss kiss, go enable some hotplug interrupts, ily 🍓💜🌸
📦 where this page comes from