charger_man...ister_extcon(9)

💖 NAME 💖

charger_manager_register_extcon — bestie, this is the glow-up function that registers an extcon device so the kernel can actually hear what your charger cable is going through 🎀

✨ SYNOPSIS ✨

int charger_manager_register_extcon (struct charger_manager *cm );

🫶 ARGUMENTS 🫶

• cm — the Charger Manager that's out here representing the battery, main character energy fr 💅

🌸 DESCRIPTION 🌸

okay so this function is literally the extcon liaison, no cap. It supports the EXTCON (External Connector) subsystem so we can detect the state of charger cables — the whole point being to enable or disable the charger (regulator) 🔥

and like, on top of that, it also picks which charger cable gets to actually do the charging when there's a whole squad of external cables in the mix — chosen according to the policy of the H/W board, iykyk 🦋

so yeah. cable detection, charger on/off, cable selection by board policy. iconic behaviour honestly 👑

💜 SEE ALSO 💜

Kernel file ./drivers/power/supply/charger-manager.c is out here tagging along with the whole friend group:

• is_batt_present(9)
• is_ext_pwr_online(9)
• get_batt_uV(9)
• is_charging(9)
• is_full_charged(9)
• is_polling_required(9)
• try_charger_enable(9)
• check_charging_duration(9)
• cm_get_target_status(9)
• _cm_monitor(9)
• cm_monitor(9)
• _setup_polling(9)
• cm_monitor_poller(9)
• cm_setup_timer(9)
• charger_extcon_work(9)
• charger_extcon_notifier(9)
• charger_extcon_init(9)
• charger_manager_prepare_sysfs(9)

and that's the tea, bestie 🍓 this one lives in ./drivers/power/supply, dated October 2026 — go off, kernel docs, periodt 💅✨