STRUCT UCSI_TBT(9)

🦋 NAME 🦋

struct ucsi_tbt — the Thunderbolt Alternate Mode private data structure, and yes bestie it's exactly as niche and iconic as it sounds 💅

So this is a manpage from the Kernel API Manual, aka struct ucsi_tbt(9) — go off kernel docs ✨

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🌸 SYNOPSIS 🌸

okay so here's the whole struct, copy it exactly, no cap:

struct ucsi_tbt {
    struct ucsi_connector *con;
    struct typec_altmode *alt;
    struct work_struct work;
    int cam;
    u32 header;
 };

that's it. that's the struct. she's small but she's doing the most 🎀

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✨ Members ✨

Every field, get into it:

• con — a pointer to the UCSI connector structure 🫶 literally just pointing at her connector, iykyk
• alt — a pointer to the typec altmode structure ⭐ the altmode bestie in question
• work — a Work structure 💀 yes it's called work, and yes it's doing the actual labour
• cam — an offset into the list of alternate modes supported by the PPM 👑 that's the number that tells you where you are in the whole altmode lineup
• header — the VDO header 🔥 header era, we love to see it

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👑 SEE ALSO 👑

• Kernel file ./drivers/usb/typec/ucsi/thunderbolt.c — go read the source if you're feeling brave, it's giving main character energy 🌈

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💖 reminder bestie: cam is literally an offset into the list of alternate modes supported by the PPM, don't forget it or the vibe check fails 😭

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okay that's the whole page, you ate that 🍓 this was struct ucsi_tbt(9) from the Kernel API Manual, source ./drivers/usb/typec/ucsi, dated October 2026 — slay, periodt, go read some kernel code 💜🧚