dm_test_crtc..._ips_restore(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dm_test_crtc_enable_vblank_ips_restore(9) 💅

okay so this is a page straight out of the Kernel API Manual, bestie — welcome, pull up a chair 🫶

✨ NAME ✨

dm_test_crtc_enable_vblank_ips_restore — the test for IPS/self-refresh vblank restore, and honestly? she's iconic 👑

🌸 SYNOPSIS 🌸

void dm_test_crtc_enable_vblank_ips_restore (struct kunit *test );

🎀 ARGUMENTS 🎀

  • test — the KUnit test context 💖 this is the one and only thing you hand her, and she takes it from there.

🦋 DESCRIPTION 🦋

okay so here's the vibe check 🔍 — when the DC advertises IPS support with IPS not fully disabled, self-refresh is supported, and immediate vblank disable is configured, then the enable path must call drm_crtc_vblank_restore to estimate missed vblanks before arming the IRQs. literally the order matters, no cap ✋

after that lil restore moment, the enable path then runs to completion 🌈 that's it, that's the whole test. periodt. 💅

fr fr, this test is just making sure the restore call actually happens at the right spot before the IRQs get armed — it's giving "small but crucial" energy 🧚

👑 SEE ALSO 👑

the kernel file lives riiight here, bestie 📁:

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

and here's the whole friend group — the entire test fam, all of them, in order 💜:

okay that's the whole page, bestie 🍓 ngl you ate that reading session. this one comes from ./drivers/gpu/drm/amd/display/... and it's dated October 2026 — go off, future era 📅✨ mwah, see u in the next man page 💋💖

📦 where this page comes from