diff options
| author | wahsu <wahsu@nvidia.com> | 2014-03-20 19:50:02 +0800 |
|---|---|---|
| committer | Riham Haidar <rhaidar@nvidia.com> | 2014-05-05 11:06:52 -0700 |
| commit | 299583f63a93fe4c2e6c1475b3682b8ed62b9427 (patch) | |
| tree | 204f4e1fff48a8eb0bf6c7345c15eb5eff5176b6 /drivers/power | |
| parent | 8970fd9f25ee29472718379e16a19321854657f5 (diff) | |
Batt: t124-tn8: add sysfs to read battery capacity
bug 1433349
Change-Id: I93d71ee6ae0f76f1a78ea272fb2d7b4210464e81
Signed-off-by: wahsu <wahsu@nvidia.com>
Reviewed-on: http://git-master/r/384366
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Change-Id: Ic87db2d5d7e07297eb111d11d1a6ead3c6c7fd39
Reviewed-on: http://git-master/r/404460
Reviewed-by: Wayne Hsu <wahsu@nvidia.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/battery-charger-gauge-comm.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/power/battery-charger-gauge-comm.c b/drivers/power/battery-charger-gauge-comm.c index ee4c44116498..3b615bcc82bb 100644 --- a/drivers/power/battery-charger-gauge-comm.c +++ b/drivers/power/battery-charger-gauge-comm.c @@ -39,6 +39,7 @@ #include <linux/power/reset/system-pmic.h> #include <linux/wakelock.h> #include <linux/iio/consumer.h> +#include <linux/iio/types.h> #include <linux/iio/iio.h> #define JETI_TEMP_COLD 0 @@ -264,15 +265,45 @@ static ssize_t battery_show_snapshot_capacity(struct device *dev, bg_dev->battery_snapshot_capacity); } +static ssize_t battery_show_max_capacity(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct iio_channel *channel; + int val, ret; + + channel = iio_channel_get(dev, "batt_id"); + if (IS_ERR(channel)) { + dev_err(dev, + "%s: Failed to get channel batt_id, %ld\n", + __func__, PTR_ERR(channel)); + return 0; + } + + ret = iio_read_channel_raw(channel, &val); + if (ret < 0) { + dev_err(dev, + "%s: Failed to read channel, %d\n", + __func__, ret); + return 0; + } + + return snprintf(buf, MAX_STR_PRINT, "%d\n", val); +} + static DEVICE_ATTR(battery_snapshot_voltage, S_IRUGO, battery_show_snapshot_voltage, NULL); static DEVICE_ATTR(battery_snapshot_capacity, S_IRUGO, battery_show_snapshot_capacity, NULL); +static DEVICE_ATTR(battery_max_capacity, S_IRUGO, + battery_show_max_capacity, NULL); + static struct attribute *battery_snapshot_attributes[] = { &dev_attr_battery_snapshot_voltage.attr, &dev_attr_battery_snapshot_capacity.attr, + &dev_attr_battery_max_capacity.attr, NULL }; |