dm_dmub_aux_...fig_callback(9)

💅 dm_dmub_aux_...fig_callback(9) — Kernel API Manual 🎀

okay bestie, so this is a Kernel API Manual page, and no cap, the name up top is a whole mood: dm_dmub_aux_...fig_callback(9). Like, the kernel literally said "…" and moved on. Iconic behaviour, honestly. Let's get into it 💖

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✨ NAME ✨

dm_dmub_aux_setconfig_callback — the callback for the AUX or SET_CONFIG command. That's it, that's the whole vibe. 🦋

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🌸 SYNOPSIS 🌸

void dm_dmub_aux_setconfig_callback (struct amdgpu_device *adev , struct
dmub_notification *notify );

yes, it returns void. it does its thing and it does not report back. main character energy, honestly. 💅

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⭐ ARGUMENTS ⭐

• adev — an amdgpu_device pointer. just your friendly neighbourhood amdgpu device pointer, living its life 🫶
• notify — the dmub notification structure. this is the lil message bag that gets passed around, iykyk 🎀

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🦋 DESCRIPTION 🦋

so this right here is the DMUB AUX or SET_CONFIG command completion processing callback. say that five times fast, I dare you 😭

what it does: it copies the dmub notification to DM, and that copied notification is what's meant to be read by the AUX command. tea. ☕

and then — the issuing thread — it also signals the event to wake up the thread. so the thread that's out here waiting gets its little wake-up call. literally "rise and grind" but for kernel threads ✨🔥

that's the whole job, bestie. copy the notification over, then poke the event so the waiting thread wakes up. no extra steps, no drama. periodt. 👑

real talk: this page is describing completion processing — it's the callback that gets fired when the AUX or SET_CONFIG command finishes. it does not do your taxes. 💜

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🌈 SEE ALSO 🌈

• kernel file ./drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_dmub.c — go read it, it's giving source code realness 🍓
• dm_register_dmub_notify_callback(9) — the other callback-flavoured page you'll probably want next, fr fr 🧚

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🎀 cute lil sign-off 🎀

this page lives at ./drivers/gpu/drm/amd/display/... (yes, truncated with dots, we love a mystery 💀), it's dated October 2026, and you can find it filed under dm_dmub_aux_...fig_callback(9) — same truncated name, same chaotic energy. slay, drink water, and always signal your events. 💖✨🌸