drm_dp_lttpr_init(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_dp_lttpr_init — like, the LTTPR transparency mode glow-up

okay so bestie, welcome to the Kernel API Manual ✨ this little page is all about drm_dp_lttpr_init(9), and yes the name is a mouthful, iykyk. it's the function that inits LTTPR transparency mode according to the DP standard. that's the whole vibe. no cap. 🦋

✨ NAME ✨

drm_dp_lttpr_init — init LTTPR transparency mode according to DP standard 🎀

like literally that's it. it sets up transparency mode, and it follows the DP standard, because we are not out here freestyling. periodt.

🌸 SYNOPSIS 🌸

int drm_dp_lttpr_init (struct drm_dp_aux *aux , int lttpr_count );

that's the whole signature, copy it exactly, don't be cute with it. 💅

🧚 ARGUMENTS 🧚

  • aux — the DisplayPort AUX channel. yes, that AUX channel. your main character struct. 💜
  • lttpr_count — the number of LTTPRs. it's gotta be between 0 and 8, according to the DP standard. and if it's any non-valid number, you're getting a negative error code back, sorry bestie 😭. also, go check drm_dp_lttpr_count for the deets on this one.

⭐ RETURN ⭐

0 on success, or a negative error code on failure. that's the whole deal. slay when it's 0, cry when it's negative 🫶

🔥 SEE ALSO 🔥

okay this list is genuinely iconic, it's giving "the entire DP helper cinematic universe" 👑. everything below is exactly what the page says, no cap, not one reference dropped:

the kernel file lives at ./drivers/gpu/drm/display/drm_dp_helper.c — that's the home base 🏠

yes bestie, they really made a function called drm_dp_lttpr_voltage_swing_level_3_supported(9). and another one right after it. we love a thorough cast list 💖

and that's the page!! this cutie came out of ./drivers/gpu/drm/display, dated October 2026 — go drink some water, call your mom, and may all your error codes be 0 🌈💅🫶

📦 where this page comes from