From b8fe9902f3c6c50ca6a23e24fcea99582beebc65 Mon Sep 17 00:00:00 2001 From: Martin Pitt Date: Tue, 22 Oct 2013 10:02:51 +0200 Subject: linux: Clamp percentage for overfull batteries Some batteries report energy > energy_full and a percentage ("capacity" attribute) > 100%. Clamp these within 0 and 100% for both plausibility as well as to avoid setting an out-of-range property which would then become 0%. https://launchpad.net/bugs/1240673 --- src/linux/integration-test | 33 +++++++++++++++++++++++++++++++++ src/linux/up-device-supply.c | 4 ++++ 2 files changed, 37 insertions(+) diff --git a/src/linux/integration-test b/src/linux/integration-test index 8489bf3..4be1922 100755 --- a/src/linux/integration-test +++ b/src/linux/integration-test @@ -442,6 +442,39 @@ class Tests(unittest.TestCase): self.assertEqual(self.get_dbus_property('OnLowBattery'), False) self.stop_daemon() + def test_battery_overfull(self): + '''battery which reports a > 100% percentage for a full battery''' + + self.testbed.add_device('power_supply', 'BAT0', None, + ['type', 'Battery', + 'present', '1', + 'status', 'Full', + 'current_now', '1000', + 'charge_now', '11000000', + 'charge_full', '10000000', + 'charge_full_design', '11000000', + 'capacity', '110', + 'voltage_now', '12000000'], []) + + self.start_daemon() + devs = self.proxy.EnumerateDevices() + self.assertEqual(len(devs), 1) + bat0_up = devs[0] + + # should clamp percentage + self.assertEqual(self.get_dbus_dev_property(bat0_up, 'Percentage'), 100.0) + self.assertEqual(self.get_dbus_dev_property(bat0_up, 'IsPresent'), True) + self.assertEqual(self.get_dbus_dev_property(bat0_up, 'State'), + UP_DEVICE_STATE_FULLY_CHARGED) + self.assertEqual(self.get_dbus_dev_property(bat0_up, 'Energy'), 132.0) + # should adjust EnergyFull to reality, not what the battery claims + self.assertEqual(self.get_dbus_dev_property(bat0_up, 'EnergyFull'), 132.0) + self.assertEqual(self.get_dbus_dev_property(bat0_up, 'EnergyFullDesign'), 132.0) + self.assertEqual(self.get_dbus_dev_property(bat0_up, 'Voltage'), 12.0) + self.assertEqual(self.get_dbus_dev_property(bat0_up, 'PowerSupply'), True) + self.assertEqual(self.get_dbus_dev_property(bat0_up, 'Type'), 2) + self.stop_daemon() + def test_battery_temperature(self): '''battery which reports temperature''' diff --git a/src/linux/up-device-supply.c b/src/linux/up-device-supply.c index 8020277..b953d65 100644 --- a/src/linux/up-device-supply.c +++ b/src/linux/up-device-supply.c @@ -708,6 +708,10 @@ up_device_supply_refresh_battery (UpDeviceSupply *supply) /* get a precise percentage */ if (sysfs_file_exists (native_path, "capacity")) { percentage = sysfs_get_double (native_path, "capacity"); + if (percentage < 0.0f) + percentage = 0.0f; + if (percentage > 100.0f) + percentage = 100.0f; /* for devices which provide capacity, but not {energy,charge}_now */ if (energy < 0.1f && energy_full > 0.0f) energy = energy_full * percentage / 100; -- cgit v1.2.3