hdmi_spd_infoframe_pack(9)

📦 version 7.3.1, in nixpkgs unstable

💖 hdmi_spd_infoframe_pack(9) 💖

Okay so bestie, this is a page from the Kernel API Manual (the (9) is giving kernel-internal function, iykyk) and it's literally all about hdmi_spd_infoframe_pack — we're validating an HDMI SPD infoframe and then packing it into a binary buffer. No cap, it's iconic. ✨

🎀 NAME 🎀

hdmi_spd_infoframe_pack — check a HDMI SPD infoframe, and write it to binary buffer

📜 SYNOPSIS 📜

ssize_t hdmi_spd_infoframe_pack (struct hdmi_spd_infoframe *frame , void *buffer , size_t size );

🫶 ARGUMENTS 🫶

  • frame — the HDMI SPD infoframe, bestie. Like, the actual thing we're working with. 💅
  • buffer — destination buffer. This is where the packed bytes go. 🎀
  • size — size of buffer. Gotta know how much room we have, periodt. 🦋

🌸 DESCRIPTION 🌸

So what this function actually does is: it validates that the infoframe is consistent, and it updates derived fields (eg. length) based on other fields. Then it packs the information contained in the frame structure into a binary representation that can be written into the corresponding controller registers. It also computes the checksum as required by section 5.3.5 of the HDMI 1.4 specification. So it's giving thorough. 💖

It returns the number of bytes packed into the binary buffer, or a negative error code on failure. So if it works, you get a size; if it's a flop, you get a negative number. 😭

🔥 SEE ALSO 🔥

Kernel file ./drivers/video/hdmi.c

And literally the whole friend group of HDMI infoframe functions:

This page lives in ./drivers/video and it's dated October 2026. Stay iconic, bestie — pack those infoframes like the main character you are. 💅✨
📦 where this page comes from