amdgpu_dm_hpd_init(9)

✨ amdgpu_dm_hpd_init(9) ✨

okay so bestie, welcome to the Kernel API Manual 💖 — this page is literally all about amdgpu_dm_hpd_init, and yes it's a kernel thing, but like... it's the fun kernel thing (hotplug detection, iykyk 🦋). Buckle up, it's short and it slays.

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🌸 NAME 🌸

amdgpu_dm_hpd_init — the hpd setup callback. that's it. that's the vibe check 💅

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✨ SYNOPSIS ✨

void amdgpu_dm_hpd_init (struct amdgpu_device *adev );

no cap, that's the whole signature 👑

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🎀 ARGUMENTS 🎀

• adev — an amdgpu_device pointer. that's the main character right there 🫶

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🔥 DESCRIPTION 🔥

so what does this beauty actually do? it sets up the hpd pins that the card uses — and yes, we're talking evergreen+, so your fave old-ish hardware is included too, iconic ✨

the three little jobs it does:

1. enable the pin 🎀
2. set the polarity 🌈
3. enable the hpd interrupts 💖

that's the whole arc. setup, polarity, interrupts, done. periodt 💅

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🦋 SEE ALSO 🦋

kernel file ./drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c — go read it, it's giving lore 📖

and the whole friend group of related pages (ngl they all showed up together and it's a lot of besties):

• 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_fini(9)
• amdgpu_dm_hdmi_hpd_debounce_work(9)
• dmub_hpd_callback(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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anyway bestie, that's the page 💜 it came from the source path ./drivers/gpu/drm/amd/display/..., it's dated October 2026, and it answers to the name amdgpu_dm_hpd_init(9) — go set up some hotplug pins, you've got this, mwah 😭💖