diff options
| author | Ramakrishna Pallala <ramakrishna.pallala@intel.com> | 2012-04-10 16:21:20 +0530 |
|---|---|---|
| committer | Anton Vorontsov <anton.vorontsov@linaro.org> | 2012-05-04 20:44:29 -0700 |
| commit | a2ebfe2fc6e088a70d06cd15a5bc9bcb621cc195 (patch) | |
| tree | e9c03e1cbcb7b98f6049c17bb6000ae5218ae754 /drivers/power | |
| parent | 48e41c70c10f10541d922fc67e7952f06ad59d9a (diff) | |
power_supply: Add voltage_ocv property and use it for max17042 driver
This adds a new sysfs file called 'voltage_ocv' which gives the
Open Circuit Voltage of the battery.
This property can be used for platform shutdown policies and
can be useful for initial capacity estimations.
Note: This patch is generated against linux-next branch.
Signed-off-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/max17042_battery.c | 8 | ||||
| -rw-r--r-- | drivers/power/power_supply_sysfs.c | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/power/max17042_battery.c b/drivers/power/max17042_battery.c index 738648d1d9f..42c4be9a664 100644 --- a/drivers/power/max17042_battery.c +++ b/drivers/power/max17042_battery.c @@ -106,6 +106,7 @@ static enum power_supply_property max17042_battery_props[] = { POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, POWER_SUPPLY_PROP_VOLTAGE_NOW, POWER_SUPPLY_PROP_VOLTAGE_AVG, + POWER_SUPPLY_PROP_VOLTAGE_OCV, POWER_SUPPLY_PROP_CAPACITY, POWER_SUPPLY_PROP_CHARGE_FULL, POWER_SUPPLY_PROP_TEMP, @@ -172,6 +173,13 @@ static int max17042_get_property(struct power_supply *psy, val->intval = ret * 625 / 8; break; + case POWER_SUPPLY_PROP_VOLTAGE_OCV: + ret = max17042_read_reg(chip->client, MAX17042_OCVInternal); + if (ret < 0) + return ret; + + val->intval = ret * 625 / 8; + break; case POWER_SUPPLY_PROP_CAPACITY: ret = max17042_read_reg(chip->client, MAX17042_RepSOC); if (ret < 0) diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c index 4368e7d6131..4150747f918 100644 --- a/drivers/power/power_supply_sysfs.c +++ b/drivers/power/power_supply_sysfs.c @@ -146,6 +146,7 @@ static struct device_attribute power_supply_attrs[] = { POWER_SUPPLY_ATTR(voltage_min_design), POWER_SUPPLY_ATTR(voltage_now), POWER_SUPPLY_ATTR(voltage_avg), + POWER_SUPPLY_ATTR(voltage_ocv), POWER_SUPPLY_ATTR(current_max), POWER_SUPPLY_ATTR(current_now), POWER_SUPPLY_ATTR(current_avg), |