ab8500_char...enance_timer(9)

💅 ab8500_char...enance_timer(9) — like, the whole manual, but make it make sense

okay bestie, gather round 🫶 this one is from the Kernel API Manual, and it's about one little function that keeps your battery from getting bored once it's fully charged. no cap, it's lowkey iconic. let's get into it ✨

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🌸 NAME 🌸

ab8500_chargalg_start_maintenance_timer — Start the charging maintenance timer ⏰🔋

like, that's literally the whole job. it starts the maintenance timer. slay.

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🎀 SYNOPSIS 🎀

void ab8500_chargalg_start_maintenance_timer (struct ab8500_chargalg *di
, int duration );

that's the whole signature, bestie — a pointer and an int, and it returns void (so it gives you nothing back, which is honestly such a mood 🙈).

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🦋 ARGUMENTS 🦋

• di — pointer to the ab8500_chargalg structure 💖 this is your main character struct, the whole charging algorithm lives in there.
• duration — how long the maintenance timer runs, measured in minutes ⏱️ yes, actual minutes, no weird units, we love to see it.

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✨ DESCRIPTION ✨

so here's the vibe check 👑 the maintenance timer exists to maintain the charge in the battery once the battery is considered full 🍓 like, the battery already ate, it's satisfied, but we're not just gonna abandon it — this timer keeps things topped up and happy.

and the timers themselves? "These timers are chosen to match the discharge curve of the battery." 📉🔋 that's the technical part, and I'm not gonna mess with it — they're picked to line up with how the battery naturally discharges. iykyk 💅

not me being obsessed with a timer that literally just matches a discharge curve — it's giving "engineer who actually read the datasheet" energy 🧚

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🔥 SEE ALSO 🔥

okay this is the part where the manpage dumps the entire friend group in the group chat 😭 but like, every single one of them matters, so here they are, no skipping:

Kernel file: ./drivers/power/supply/ab8500_chargalg.c

and the whole squad:

• struct ab8500_charge_curr_maximization(9)
• struct ab8500_chargalg(9)
• ab8500_chargalg_safety_timer_expired(9)
• ab8500_chargalg_maintenance_timer_expired(9)
• ab8500_chargalg_state_to(9)
• ab8500_chargalg_check_charger_connection(9)
• ab8500_chargalg_start_safety_timer(9)
• ab8500_chargalg_stop_safety_timer(9)
• ab8500_chargalg_stop_maintenance_timer(9)
• ab8500_chargalg_kick_watchdog(9)
• ab8500_chargalg_ac_en(9)
• ab8500_chargalg_usb_en(9)
• ab8500_chargalg_update_chg_curr(9)
• ab8500_chargalg_stop_charging(9)
• ab8500_chargalg_hold_charging(9)
• ab8500_chargalg_start_charging(9)
• ab8500_chargalg_check_temp(9)
• ab8500_chargalg_check_charger_voltage(9)
• ab8500_chargalg_end_of_charge(9)
• ab8500_chargalg_chg_curr_maxim(9)
• ab8500_chargalg_external_power_changed(9)
• ab8500_chargalg_time_to_restart(9)
• ab8500_chargalg_algorithm(9)
• ab8500_chargalg_periodic_work(9)
• ab8500_chargalg_wd_work(9)
• ab8500_chargalg_work(9)
• ab8500_chargalg_get_property(9)

every single one, bestie. not one skipped. that's the whole friend group and they're all invited to the party 🎉💜

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reminder: duration is in minutes. don't come at me later saying i didn't warn you 😭

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and that's the page!! 🫶 written from ./drivers/power/supply, dated October 2026, and signed off with the same header you started with — ab8500_char...enance_timer(9), Kernel API Manual — because the vibes are consistent and we keep the receipts 💅✨🎀