drm_dp_set_phy_test_pattern(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_dp_set_phy_test_pattern(9) — the girlypop guide 💅

okay so bestie, welcome to the Kernel API Manual entry for drm_dp_set_phy_test_pattern — yes that's a whole mouthful, but it's giving "tiny function, big job" energy and we're gonna get through it together 🫶✨

🌸 NAME 🌸

drm_dp_set_phy_test_pattern — set the pattern to the sink. That's it, that's the whole vibe 💅

🦋 SYNOPSIS 🦋

int drm_dp_set_phy_test_pattern (struct drm_dp_aux *aux , struct
       drm_dp_phy_test_params *data , u8 dp_rev );

🎀 ARGUMENTS 🎀

  • aux — the DisplayPort AUX channel, aka your direct little hotline 💌
  • data — the DP phy compliance test parameters, all the deets for the test 🧪
  • dp_rev — the DP revision to use for compliance testing, like which era of lore we're operating in 🕰️

🔥 DESCRIPTION 🔥

This one is lowkey short and sweet — the description is literally just the return contract, no cap:

Returns 0 on success or a negative error code on failure. ✨

So like, check the return value, bestie. 0 = slay, negative = something's not slaying and you should handle it 🙈

no cap: the only thing the description promises is that return behaviour, so don't go reading extra secret powers into it 👑

👑 SEE ALSO 👑

okay this list is long — like, genuinely iconic levels of long — but every single one is here, so let's go 🌈

Kernel file ./drivers/gpu/drm/display/drm_dp_helper.c:

and that's the whole page, bestie — go forth and set those test patterns 💖

🌟 cute lil sign-off: this page lives under ./drivers/gpu/drm/display, and it's dated October 2026. periodt. 💅✨
📦 where this page comes from