diff options
Diffstat (limited to 'drivers/acpi/battery.c')
| -rw-r--r-- | drivers/acpi/battery.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index f14a2bb1f7cd..cfdef4c1d097 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -74,6 +74,7 @@ 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_quirk_notcharging; static int battery_full_discharging; static unsigned int cache_time = 1000; module_param(cache_time, uint, 0644); @@ -229,6 +230,8 @@ static int acpi_battery_get_property(struct power_supply *psy, val->intval = POWER_SUPPLY_STATUS_CHARGING; else if (acpi_battery_is_charged(battery)) val->intval = POWER_SUPPLY_STATUS_FULL; + else if (battery_quirk_notcharging) + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; else val->intval = POWER_SUPPLY_STATUS_UNKNOWN; break; @@ -707,7 +710,7 @@ EXPORT_SYMBOL_GPL(battery_hook_register); * This function gets called right after the battery sysfs * attributes have been added, so that the drivers that * define custom sysfs attributes can add their own. -*/ + */ static void battery_hook_add_battery(struct acpi_battery *battery) { struct acpi_battery_hook *hook_node; @@ -1315,6 +1318,12 @@ static int __init battery_full_discharging_quirk(const struct dmi_system_id *d) return 0; } +static int __init battery_quirk_not_charging(const struct dmi_system_id *d) +{ + battery_quirk_notcharging = 1; + return 0; +} + static const struct dmi_system_id bat_dmi_table[] __initconst = { { .callback = battery_bix_broken_package_quirk, @@ -1364,6 +1373,19 @@ static const struct dmi_system_id bat_dmi_table[] __initconst = { DMI_MATCH(DMI_PRODUCT_NAME, "UX410UAK"), }, }, + { + /* + * On Lenovo ThinkPads the BIOS specification defines + * a state when the bits for charging and discharging + * are both set to 0. That state is "Not Charging". + */ + .callback = battery_quirk_not_charging, + .ident = "Lenovo ThinkPad", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad"), + }, + }, {}, }; |