hdmi_spd_inf...me_pack_only(9)

📦 version 7.3.1, in nixpkgs unstable

🎀 NAME 🎀

okay so welcome to the hdmi_spd_inf...me_pack_only(9) page, bestie — the header lowkey truncates it but the real name is hdmi_spd_infoframe_pack_only, and this is the Kernel API Manual, so you know it's the good stuff ✨

short version: it writes an HDMI SPD infoframe to a binary buffer. that's it. that's the whole vibe 💅

🌸 SYNOPSIS 🌸

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

like, she takes three things and gives you back a ssize_t. main character energy fr fr 👑

🦋 ARGUMENTS 🦋

okay let's meet the cast 🫶

  • frame — the HDMI SPD infoframe itself. this is the source material.
  • buffer — the destination buffer. where the packed bytes are gonna land.
  • size — size of buffer. pls know it, she needs it.

💖 DESCRIPTION 💖

so what she actually does: she packs all the information contained in the frame structure into a binary representation that can be written into the corresponding controller registers. iconic behavior, no notes 🌈

and because she's thorough (we love a detail-oriented queen), she also computes the checksum as required by section 5.3.5 of the HDMI 1.4 specification. yes, section 5.3.5 specifically. we don't guess, we cite 📖✨

then she returns the number of bytes packed into the binary buffer, or a negative error code on failure. so like — positive number = slay, negative number = something went wrong, handle it 😭

ngl, the "only" in the name is doing a lot of heavy lifting here — this one writes to the binary buffer, it doesn't do the extra checking step. that's a different function, and she's down in SEE ALSO if you're curious 👀

🔥 SEE ALSO 🔥

buckle up bestie, this is the whole group chat 💀

kernel file: ./drivers/video/hdmi.c

and the extended family:

that's the whole page, bestie. go pack some infoframes, drink water, and remember: section 5.3.5 of the HDMI 1.4 spec said checksum, so we checksum 💜

mwah 💋 this came from ./drivers/video, dated October 2026, and the footer still calls it hdmi_spd_inf...me_pack_only(9) because she's a little truncated and we love her anyway 🎀

📦 where this page comes from