STRUCT BQ257XX_CHG(9)

struct bq257xx_chg(9) 💖

✨ NAME ✨

From the Kernel API Manual, bestie: struct bq257xx_chg — driver data for charger. That's the whole vibe. It's the little struct that holds all the charger's main-character state 💅

🌸 SYNOPSIS 🌸

struct bq257xx_chg {
    const struct bq257xx_chip_info *chip;
    struct bq257xx_device *bq;
    struct power_supply *charger;
    bool online;
    bool charging;
    bool fast_charge;
    bool pre_charge;
    bool overvoltage;
    bool ov_fault;
    bool batoc_fault;
    bool oc_fault;
    int usb_type;
    int supplied;
    u32 iindpm_max;
    u32 vbat_max;
    u32 ichg_max;
    u32 vsys_min;
 };

🎀 Members 🎀

Okay so these are the fields, and every single one is iconic in its own way:

• chip — hw specific functions. The hardware-specific function pointers, aka the custom moves this chip family brings to the party 💅
• bq — parent MFD device. The parent multifunction device, iykyk.
• charger — power supply device. The actual power supply device — the charger star of the show ⭐
• online — charger input is present. A bool that's true when charger input is present, like "we have power at the door" 🚪
• charging — charger is actively charging the battery. A bool for "yup, it's actively charging the battery rn" 🔋
• fast_charge — charger is in fast charge mode. A bool for fast charge mode — zoom zoom ⚡
• pre_charge — charger is in pre-charge mode. A bool for pre-charge mode, the lil warm-up era 🧚
• overvoltage — overvoltage fault detected. A bool saying an overvoltage fault was detected — red flag 🚩
• ov_fault — charger reports over voltage fault. A bool where the charger itself reports an over voltage fault. Slightly different vibe from overvoltage, do not mix them up bestie 😭
• batoc_fault — charger reports battery over current fault. A bool for the charger reporting a battery over current fault.
• oc_fault — charger reports over current fault. A bool for the charger reporting an over current fault.
• usb_type — USB type reported from parent power supply. An int holding the USB type reported from the parent power supply.
• supplied — Status of parent power supply. An int for the status of the parent power supply.
• iindpm_max — maximum input current limit (uA). A u32, and the unit is uA, fr fr.
• vbat_max — maximum charge voltage (uV). A u32, measured in uV.
• ichg_max — maximum charge current (uA). A u32, measured in uA.
• vsys_min — minimum system voltage (uV). A u32, measured in uV.

🦋 SEE ALSO 🦋

Kernel file ./drivers/power/supply/bq257xx_charger.c — and here's the whole friend group, no cap:

• struct bq257xx_chip_info(9)
• bq25792_read16(9)
• bq25792_write16(9)
• bq25703_get_state(9)
• bq25792_get_state(9)
• bq25703_get_min_vsys(9)
• bq25792_get_min_vsys(9)
• bq25703_set_min_vsys(9)
• bq25792_set_min_vsys(9)
• bq25703_get_cur(9)
• bq25792_get_cur(9)
• bq25703_get_ichg_cur(9)
• bq25792_get_ichg_cur(9)
• bq25703_set_ichg_cur(9)
• bq25792_set_ichg_cur(9)
• bq25703_get_chrg_volt(9)
• bq25792_get_chrg_volt(9)
• bq25703_set_chrg_volt(9)
• bq25792_set_chrg_volt(9)
• bq25703_get_iindpm(9)
• bq25792_get_iindpm(9)
• bq25703_set_iindpm(9)
• bq25792_set_iindpm(9)
• bq25703_get_vbat(9)
• bq25792_get_vbat(9)
• bq25703_hw_init(9)
• bq25792_hw_init(9)
• bq25703_hw_shutdown(9)
• bq25792_hw_shutdown(9)
• bq257xx_set_charger_property(9)
• bq257xx_get_charger_property(9)
• bq257xx_property_is_writeable(9)
• bq257xx_external_power_changed(9)
• bq257xx_irq_handler_thread(9)
• bq257xx_parse_dt(9)
• bq257xx_charger_probe(9)
• bq257xx_charger_shutdown(9)

And that's the page, bestie. Source/version is ./drivers/power/supply, dated October 2026 — periodt. 💅✨