diff options
| author | Alexey Starikovskiy <aystarik@gmail.com> | 2008-11-21 22:41:01 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-11-26 17:23:10 -0500 |
| commit | 558073dd56707864f09d563b64e7c37c021e89d2 (patch) | |
| tree | 0dcf13ad7676da7ac229b58a758546a70849cbe0 | |
| parent | 7b4d469228a92a00e412675817cedd60133de38a (diff) | |
ACPI: battery: Convert discharge energy rate to current properly
ACPI battery interface reports its state either in mW or in mA, and
discharge rate in your case is reported in mW. power_supply interface
does not have such a parameter, so current_now parameter is used
for all cases. But in case of mW, reported discharge should
be converted into mA.
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Tested-by: Ferenc Wagner <wferi@niif.hu>
Signed-off-by: Len Brown <len.brown@intel.com>
| -rw-r--r-- | drivers/acpi/battery.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 1423b0c0cd2..a0a178dd189 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -174,6 +174,15 @@ static int acpi_battery_get_property(struct power_supply *psy, break; case POWER_SUPPLY_PROP_CURRENT_NOW: val->intval = battery->current_now * 1000; + /* if power units are mW, convert to mA by + dividing by current voltage (mV/1000) */ + if (!battery->power_unit) { + if (battery->voltage_now) { + val->intval /= battery->voltage_now; + val->intval *= 1000; + } else + val->intval = -1; + } break; case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: |