usb_phy_notify_charger_work(9)

📦 version 7.3.1, in nixpkgs unstable

💅 usb_phy_notify_charger_work(9) 💅

okay so bestie, this page is straight out of the Kernel API Manual, and today’s main character is the charger-state notification work. It’s giving “tell everyone the charger situation changed” energy, fr fr. ✨

🎀 NAME 🎀

usb_phy_notify_charger_work — notify the USB charger state. literally the whole point, no cap. 💖

🌸 SYNOPSIS 🌸

void usb_phy_notify_charger_work (struct work_struct *work );

🦋 ARGUMENTS 🦋

  • work — the charger work that gets to notify the USB charger state. that’s the one and only arg, bestie. 🫶

💖 DESCRIPTION 💖

This work can be issued when the USB charger state has been changed or when the USB charger current has been changed. Then we can notify the current — like what can be drawn to power user — and the charger state to userspace. So yeah, it’s the little messenger of charger updates. iconic behavior, honestly. 🌈

If we get the charger type from the extcon subsystem, we can notify the charger state to the power user automatically by usb_phy_get_charger_type issuing from the extcon subsystem. iykyk — extcon handles the auto-notify vibe. ✨

If we get the charger type from ->charger_detect instead of the extcon subsystem, the usb phy driver should issue usb_phy_set_charger_state to set the charger state when the charger state has been changed. No skipping that step, bestie — that’s the manual’s rule. 💅

lowkey important: on the ->charger_detect path, the usb phy driver has to call usb_phy_set_charger_state itself when the charger state changes. The extcon path is the automatic one. 🦋

👑 SEE ALSO 👑

Kernel file ./drivers/usb/phy/phy.c, plus these absolute icons:

mwah 💋 — source/version tag is ./drivers/usb/phy, and the date stamp is October 2026. that’s the whole page, bestie; go forth and notify that charger state 🫶🌈

📦 where this page comes from