post-1.29 BIOS), but as of Nov. 2012, no such update is
available for the 2010 models. */
ACPI_BATTERY_QUIRK_THINKPAD_MAH,
+ /* for batteries reporting current capacity with design capacity
+ * on a full charge, but showing degradation in full charge cap.
+ */
+ ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE,
};
struct acpi_battery {
return 0;
}
+static bool acpi_battery_is_degraded(struct acpi_battery *battery)
+{
+ return battery->full_charge_capacity && battery->design_capacity &&
+ battery->full_charge_capacity < battery->design_capacity;
+}
+
static int acpi_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
it's impossible to tell if they would need an adjustment
or not if their values were higher. */
}
+ if (test_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags) &&
+ battery->capacity_now > battery->full_charge_capacity)
+ battery->capacity_now = battery->full_charge_capacity;
+
return result;
}
battery->capacity_now = battery->capacity_now *
10000 / battery->design_voltage;
}
+ if (test_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags) &&
+ battery->capacity_now > battery->full_charge_capacity)
+ battery->capacity_now = battery->full_charge_capacity;
+
return result;
}
}
}
}
+
+ if (test_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags))
+ return;
+
+ if (acpi_battery_is_degraded(battery) &&
+ battery->capacity_now > battery->full_charge_capacity) {
+ set_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags);
+ battery->capacity_now = battery->full_charge_capacity;
+ }
}
static int acpi_battery_update(struct acpi_battery *battery, bool resume)