dmub_hpd_callback(9)

🦋 dmub_hpd_callback(9) 🦋

okay so this icon is straight out of the Kernel API Manual, and bestie, it's giving “tiny callback with main character energy.” Let's get into it 💅

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💖 NAME 💖

dmub_hpd_callback — DMUB HPD interrupt processing callback. periodt.

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✨ SYNOPSIS ✨

here's the exact signature, no cap:

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

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🎀 ARGUMENTS 🎀

• adev — an amdgpu_device pointer, that's literally the whole vibe.
• notify — a dmub notification structure. iconic.

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🌸 DESCRIPTION 🌸

This is the DMUB HPD interrupt processing callback, fr fr. It gets the displayindex through the ink index and then calls a helper to do the processing. That's the whole plot 🫶

lowkey important: displayindex and ink index are exactly what the page says, so don't go “fixing” them in your notes, bestie 😭

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🔥 SEE ALSO 🔥

• Kernel file: ./drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
• overview(9)
• struct amdgpu_dm_irq_handler_data(9)
• dm_irq_work_func(9)
• amdgpu_dm_irq_register_interrupt(9)
• amdgpu_dm_irq_unregister_interrupt(9)
• amdgpu_dm_irq_init(9)
• amdgpu_dm_irq_fini(9)
• amdgpu_dm_irq_handler(9)
• amdgpu_dm_hpd_init(9)
• amdgpu_dm_hpd_fini(9)
• amdgpu_dm_hdmi_hpd_debounce_work(9)
• dmub_hpd_sense_callback(9)
• dm_pflip_high_irq(9)
• dm_crtc_high_irq_handler(9)
• dm_crtc_high_irq(9)
• dm_dcn_vertical_interrupt0_high_irq(9)
• dm_dmub_outbox1_low_irq(9)

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source/version: ./drivers/gpu/drm/amd/display/... · date: October 2026 · page: dmub_hpd_callback(9) — bye bestie, go interrupt something 💅✨