drm_dp_dual_mode_read(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_dp_dual_mode_read(9)

Okay bestie, so this one lives in the Kernel API Manual — it's the kernel's little helper for talking to DP dual mode adaptors. Let's get into it ✨

🌸 NAME 🌸

drm_dp_dual_mode_read — literally just "read from the DP dual mode adaptor register(s)" 💖 that's the whole vibe

🦋 SYNOPSIS 🦋

ssize_t drm_dp_dual_mode_read (struct i2c_adapter *adapter , u8 offset ,
       void *buffer , size_t size );

🎀 ARGUMENTS 🎀

  • adapter — the I2C adapter for the DDC bus 🚌 no cap, this is the wire you're chatting over
  • offset — register offset, aka where in the register map you're pointing 👉
  • buffer — buffer for return data, the little bucket where the bytes land 🪣
  • size — size of the buffer, so nobody overflows anything 🙈

✨ DESCRIPTION ✨

Reads size bytes from the DP dual mode adaptor registers starting at offset. That's it, that's the whole function — it's giving "reliable friend who does exactly what she says she'll do" energy 👑

🔥 RETURN 🔥

0 on success 🎉, negative error code on failure 😭 (iykyk, the negative numbers are never the fun ones)

🌈 SEE ALSO 🌈

💀 real talk: these are all the sibling functions, go read them if you want the full lore — the whole friend group ate, fr fr.

That's the page, bestie — go forth and read those registers 🫶

Source / version: ./drivers/gpu/drm/display — dated October 2026. Slay, see you in the next release 💅✨

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