i3c_master_...c_dev_locked(9)

📦 version 7.3.1, in nixpkgs unstable

💜 i3c_master_add_i3c_dev_locked — kernel API manual energy 🎀

okay so bestie, welcome to the Kernel API Manual ✨ this one's short but she's important, and honestly the vibe is "quietly running the whole party" 🫶

✨ NAME ✨

i3c_master_add_i3c_dev_locked — literally the function that adds an I3C slave to the bus 💅 no cap, that's the whole job description.

🌸 SYNOPSIS 🌸

void i3c_master_add_i3c_dev_locked (struct i3c_master_controller *master
, u8 addr );

she's a void, she returns nothing, she simply does 💖 the way that this function just shows up and makes a device exist? iconic.

🦋 ARGUMENTS 🦋

  • master — the master controller used to send frames on the bus. think of her as the one holding the aux cord 🎧 every frame goes through her.
  • addr — the I3C slave dynamic address assigned to the device 🏷️ this is the device's little name tag at the party.

👑 DESCRIPTION 👑

so what she actually does: this function instantiates an I3C device object and adds it to the I3C device list 🎀 and the best part? all device information is automatically retrieved using standard CCC commands ✨ not me, not you, the CCC commands are doing the heavy lifting. main character energy fr fr.

🚨 IMPORTANT, like actually important: this function must be called with the bus lock held in write mode 💀 do not skip this. the lock is not decorative. she is not a suggestion. hold the lock, in write mode, periodt.

ngl it's giving "small function, big responsibilities" 😭 respect her.

🔥 SEE ALSO 🔥

Kernel file ./drivers/i3c/master.c 💫 and the whole friend group:

like, that's a whole group chat right there and every single one of them is invited 📲💖

✨ that's the whole page bestie ✨ this little gem lives in the ./drivers/i3c corner of the kernel tree 🌈 and she was dated October 2026 🎀 go forth, hold that write lock, and add your devices with confidence 💅💜

📦 where this page comes from