dm_test_rep...edded_signal(9)

💅 dm_test_rep...edded_signal(9) — from the Kernel API Manual ✨

okay so bestie, welcome to the Kernel API Manual — and yes the page name up top is literally truncated to dm_test_rep...edded_signal(9) (the full thing won't fit, it's giving "username too long for the UI" 😭). Anyway. It's a KUnit test for the amdgpu display driver and it's here to prove one very specific thing gets rejected. Let's go 🫶

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✨ NAME ✨

dm_test_replay_set_caps_non_embedded_signal — verify non-eDP rejection, periodt. 💅

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🌸 SYNOPSIS 🌸

void dm_test_replay_set_caps_non_embedded_signal (struct kunit *test );

literally one function, one argument, void return, no notes. clean. ✨

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🎀 ARGUMENTS 🎀

• test — the KUnit test context. that's it, that's the whole job. it's the little container that holds the test's state and knows where to report results 🧚

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💖 DESCRIPTION 💖

okay here's the tea ☕ and it's a good one.

When the link signal is not embedded, amdgpu_dm_set_replay_caps should reject Replay — even if the sink capability fields are otherwise valid. 🚫

read that again bestie. even if everything else looks totally fine, even if the caps check out, if the signal isn't embedded then it's a no. the function has to say no anyway. that's the whole personality of this test: it feeds in a situation where the capability fields are otherwise valid and confirms the embedded-ness check wins. no cap. 👑

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🦋 SEE ALSO 🦋

Kernel file — and here's the literal path so you can go snooping:

./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_replay_test.c

and the whole friend group, all of them, in order, because we don't leave anyone out of the group chat:

• dm_test_replay_set_caps_already_supported(9)
• dm_test_replay_set_caps_disallowed_by_panel(9)
• dm_test_replay_set_caps_link_not_supported(9)
• dm_test_replay_set_caps_missing_dmub_srv(9)
• dm_test_replay_set_caps_success(9)
• dm_test_replay_link_setup_null_stream(9)
• dm_test_replay_link_setup_null_link(9)
• dm_test_replay_link_setup_null_vrr_params(9)
• dm_test_replay_link_setup_not_supported(9)
• dm_test_replay_link_setup_already_enabled(9)
• dm_test_replay_link_setup_success(9)
• dm_test_replay_set_event_null_stream(9)
• dm_test_replay_set_event_null_link(9)
• dm_test_replay_set_event_feature_disabled(9)
• dm_test_replay_set_event_missing_power_module(9)
• dm_test_replay_set_event_already_set(9)
• dm_test_replay_set_event_already_clear(9)

every single one accounted for, not a single bestie left behind 🌈

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and that's the page!! 💜 it came from the source path ./drivers/gpu/drm/amd/display/... and it's dated October 2026 — future-coded of it honestly ⭐ so yeah, that's the version and the date, mwah, bye bestie 🍓💅