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SubjectRe: [PATCH] ACPI / battery: add quirk for Asus GL502VSK and UX305LA
Date
On Friday, September 22, 2017 10:27:44 AM CET Kai-Heng Feng wrote:
> 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.feng@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)

You are adding a special sub-case to the
(battery->state & ACPI_BATTERY_STATE_DISCHARGING) case, so it would be cleaner
to do that in the following way:

if (battery->state & ACPI_BATTERY_STATE_DISCHARGING) {
if (battery_full_discharging && battery->rate_now == 0)
val->intval = POWER_SUPPLY_STATUS_FULL;
else
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
} else if (battery->state & ACPI_BATTERY_STATE_CHARGING) {
val->intval = POWER_SUPPLY_STATUS_CHARGING;
}

> 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"),
> + },
> + },
> {},
> };
>
>

Thanks,
Rafael

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