drm_dp_dual_..._tmds_output(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_dp_dual_..._tmds_output(9) — like, the Kernel API Manual page, bestie ✨

okay so real talk, this is a page out of the Kernel API Manual, and it's about drm_dp_dual_mode_set_tmds_output — yes the whole name, we don't abbreviate 💀. It's a DP dual mode helper, and it's here to turn the TMDS output buffers on or off inside the adaptor. That's the whole vibe. Let's get into it 🫶

✨ NAME ✨

drm_dp_dual_mode_set_tmds_output — Enable/disable TMDS output buffers in the DP dual mode adaptor 🎀

🌸 SYNOPSIS 🌸

int drm_dp_dual_mode_set_tmds_output (const struct drm_device *dev ,
enum drm_dp_dual_mode_type type , struct i2c_adapter *adapter , bool
enable );

like, literally copy that verbatim, no cap 🔥

🦋 ARGUMENTS 🦋

  • dev — the drm_device to use 💖
  • type — the DP dual mode adaptor type, iykyk 👑
  • adapter — the I2C adapter for the DDC bus 🌈
  • enable — enable (as opposed to disable, duh) the TMDS output buffers ⭐

🎀 DESCRIPTION 🎀

So what this icon does is set the state of the TMDS output buffers in the adaptor. Periodt. 💅

For type2, this gets set via the DP_DUAL_MODE_TMDS_OEN register — that's the one, bestie, that's the main character register here 🧚

And for type1 adaptors? Whew. They do not support any register writes at all. Not even a little. So know your type before you come at it with a write, fr fr 😭

🌟 RETURN 🌟

  • 0 on success 🎉
  • negative error code on failure 💀

🍓 SEE ALSO 🍓

Lowkey the whole squad is linked here, go say hi 💜

ok that's the page!! 🫶 remember: type2 gets the DP_DUAL_MODE_TMDS_OEN register treatment, type1 gets nothing but vibes and zero register writes. Go be iconic with your TMDS buffers, bestie 💖

source/version: ./drivers/gpu/drm/display · October 2026 · drm_dp_dual_..._tmds_output(9) — mwah, catch you in the next manpage 🌸✨🎀

📦 where this page comes from