typec_altmode_state_update(9)

💅 typec_altmode_state_update(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this page is all about typec_altmode_state_update, and honestly it's giving "quietly important little function that keeps everyone in the group chat updated" 🫶. Buckle in.

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🌸 NAME 🌸

typec_altmode_state_update — Report the current status of an Alternate Mode negotiation 💫

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✨ SYNOPSIS ✨

void typec_altmode_state_update (struct typec_partner *partner , const
u16 svid , const int result );

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🎀 ARGUMENTS 🎀

• partner — the handle to the Type-C partner device 🫶 like, this is who we're talking about, keep up.
• svid — the Standard or Vendor ID of the Alternate Mode. and listen — if no mode is currently active, you pass a value of 0. zero. nada. that's the "no thoughts head empty" value 😌
• result — the result of the entry operation. this should be 0 on success, or a negative error code if the negotiation failed 💀 don't try to be cute with it, that's the rule.

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🦋 DESCRIPTION 🦋

so the way that this works is — an Alternate Mode driver is supposed to call this function to report back the result of an asynchronous alternate mode entry request. it's literally the "hey bestie here's what happened" callback 🌈

it signals what the current active SVID is (or 0 if there's none, remember the empty-thoughts value 🫶) and the success or failure status of the last attempt. that's it. that's the whole vibe. iconic behaviour, no notes 👑

ngl the async part is the whole point — the request goes out, time passes, and then you come back and tell everyone how it went. communication queen 💅

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🌟 SEE ALSO 🌟

• the kernel file ./include/linux/usb/typec_altmode.h 📁
• struct typec_altmode(9)
• struct typec_altmode_ops(9)
• struct typec_cable_ops(9)
• typec_altmode_get_cable_svdm_version(9)
• typec_altmode_get_orientation(9)
• typec_altmode_get_svdm_version(9)
• typec_altmode_get_data_role(9)
• struct typec_altmode_driver(9)
• typec_altmode_register_driver(9)
• typec_altmode_unregister_driver(9)
• typec_mode_selection_start(9)
• typec_mode_selection_delete(9)

like, go read those too if you want the full lore 🍓

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okay that's the whole page, mwah 💖 this came from ./include/linux/usb, dated October 2026, and you were reading typec_altmode_state_update(9) the entire time — slay, go report some states responsibly ✨👑