dm_test_hpd_...tomated_test(9)

📦 version 7.3.1, in nixpkgs unstable

💅 NAME 💅

ok so bestie, welcome to the manual page for dm_test_hpd_...tomated_test(9) — that's the Kernel API Manual entry, and yes the name is abbreviated in the header because it's a whole mouthful. The actual full name of the function is:

dm_test_hpd_rx_offload_work_automated_test — the KUnit test that checks the AUTOMATED_TEST branch. slay. ✨

✨ SYNOPSIS ✨

void dm_test_hpd_rx_offload_work_automated_test (struct kunit *test );

🎀 ARGUMENTS 🎀

  • test — the KUnit test context. that's it, that's the whole argument list, we love a low-maintenance queen 🫶

🦋 DESCRIPTION 🦋

okay so picture it: there's a present connection and the AUTOMATED_TEST service-IRQ bit is set. that combo is the whole vibe check for this test 💅

when that happens, the worker goes ahead and runs dc_link_dp_handle_automated_test — which is stubbed via link_srv, ngl we're not touching the real one — and then it writes the test response with core_link_write_dpcd. iconic behavior, no cap.

a couple of details that matter, fr fr:

  • timing_changed is left false on purpose, so force_connector_state — which needs a registered DRM device — is skipped. it's giving "we simply don't need that drama today" 🙈
  • aux_access_disabled makes that DPCD write a safe no-op, so nobody gets hurt. lowkey the most responsible thing in this whole test 🧚

🌈 SEE ALSO 🌈

the whole squad, bestie. every single one of these is a (9) page and we are not leaving a single one out 👑

📁 the source

  • Kernel file
  • ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_irq_test.c

🔌 hpd → dal irq source crew

🪞 the are_sinks_equal girlies

🔔 notification_str era

📋 irq register / unregister / fini

🎯 crtc lookup + irq funcs

😴 suspend / resume behavior

🧵 hpd rx irq workqueue

🎛️ crtc / pflip / vline0 / vupdate irq state

⚡ immediate + scheduled work

🚫 null dc + outbox init

🔗 hpd init / fini

🔄 hpd rx offload work siblings

🍓 hdmi hpd debounce

🩹 handle_hpd_irq helpers

📨 handle_hpd_rx_irq family

📬 dmub hpd callback

🧷 register_hpd_handlers

👑 high irq crew

🧚 hpd work + outbox1 low irq

🏗️ handler registration, big finale energy

bestie that was literally like a hundred cross-references and we read every single one. go drink some water 💜

and that's the page!! 🎀 sourced from ./drivers/gpu/drm/amd/display/..., dated October 2026, and yeah the title out front and on the footer is still dm_test_hpd_...tomated_test(9) because some things never change 💅✨

📦 where this page comes from