ec_i2c_construct_message(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ec_i2c_construct_message(9) — from the Kernel API Manual, bestie 🎀

Okay so picture this: you're deep in the kernel, you've got some i2c messages, and the EC is sitting there waiting for them in its own little language. This page is literally the translator. Let's get into it ✨

🌸 NAME 🌸

ec_i2c_construct_message — construct a message to go to the EC. That's it, that's the whole vibe. We're building a message. For the EC. Slay 💖

🦋 SYNOPSIS 🦋

int ec_i2c_construct_message (u8 *buf , const struct i2c_msg i2c_msgs[]
, int num , u16 bus_num );

Yes the line break in the middle is real, no I did not do that, that's just how it's printed. Copy it exactly, periodt 💅

✨ ARGUMENTS ✨

  • buf — the buffer to fill, bestie. And like… we assume the buffer is big enough. We do not check. We do not ask. We simply trust. 🙈
  • i2c_msgs — the i2c messages to read. These are your raw materials, your main characters. 👑
  • num — the number of i2c messages. Gotta know how many you're working with, obviously. 🔢
  • bus_num — the remote bus number we want to talk to. Which bus? That one. Over there. 🚌💨

💜 DESCRIPTION 💜

Lowkey this function is just a translator with main character energy. It effectively stuffs the standard i2c_msg format of Linux into a format that the EC understands. Linux speaks one dialect, the EC speaks another, and this function is the friend who's fluent in both 🧚✨

Returns 0 or a negative error number. So like, zero means we ate and left no crumbs, and negative means something went sideways 😭

🔥 SEE ALSO 🔥

The whole friend group, honestly 🫶 go say hi.

🎀 A little sign-off 🎀

This iconic little page lives in ./drivers/i2c/busses, and it's dated October 2026 — yes, the future, we're ahead of schedule, we're thriving. Go forth and construct those messages, bestie. You've got this 💖🌈⭐

📦 where this page comes from