On Asus GL502VSK and UX305LA, ACPI incorrectly reports discharging when battery is full and AC is plugged.
However rate_now is correct under this circumstance, hence we can use "rate_now == 0" as a predicate to report battery full status correctly. BugLink: https://bugs.launchpad.net/bugs/1482390 Signed-off-by: Kai-Heng Feng <kai.heng.f...@canonical.com> --- drivers/acpi/battery.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 13e7b56e33ae..f9f008cf3da7 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -70,6 +70,7 @@ static async_cookie_t async_cookie; static bool battery_driver_registered; static int battery_bix_broken_package; static int battery_notification_delay_ms; +static int battery_full_discharging; static unsigned int cache_time = 1000; module_param(cache_time, uint, 0644); MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); @@ -214,7 +215,10 @@ static int acpi_battery_get_property(struct power_supply *psy, return -ENODEV; switch (psp) { case POWER_SUPPLY_PROP_STATUS: - if (battery->state & ACPI_BATTERY_STATE_DISCHARGING) + if (battery_full_discharging && battery->rate_now == 0 && + battery->state & ACPI_BATTERY_STATE_DISCHARGING) + val->intval = POWER_SUPPLY_STATUS_FULL; + else if (battery->state & ACPI_BATTERY_STATE_DISCHARGING) val->intval = POWER_SUPPLY_STATUS_DISCHARGING; else if (battery->state & ACPI_BATTERY_STATE_CHARGING) val->intval = POWER_SUPPLY_STATUS_CHARGING; @@ -1166,6 +1170,13 @@ battery_notification_delay_quirk(const struct dmi_system_id *d) return 0; } +static int __init +battery_full_discharging_quirk(const struct dmi_system_id *d) +{ + battery_full_discharging = 1; + return 0; +} + static const struct dmi_system_id bat_dmi_table[] __initconst = { { .callback = battery_bix_broken_package_quirk, @@ -1183,6 +1194,22 @@ static const struct dmi_system_id bat_dmi_table[] __initconst = { DMI_MATCH(DMI_PRODUCT_NAME, "Aspire V5-573G"), }, }, + { + .callback = battery_full_discharging_quirk, + .ident = "ASUS GL502VSK", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), + DMI_MATCH(DMI_PRODUCT_NAME, "GL502VSK"), + }, + }, + { + .callback = battery_full_discharging_quirk, + .ident = "ASUS UX305LA", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), + DMI_MATCH(DMI_PRODUCT_NAME, "UX305LA"), + }, + }, {}, }; -- 2.14.1
