battery plugin: read linux sysfs charge files #3190
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maclomhair
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This patch will enable the collectd battery module to read capacity off the sysfs power_supply charge_now, charge_full and charge_full_design files since some systems do not offer the "energy_now", "energy_full" and "energy_full_design" files that are currently used.
The module will still check for the energy files but fall back to the new method.
Since the charge files are provided in microamps/hour, the values are adjusted to be Wh and therefore the same as provided by the original approach. (The same conversion factor voltage_min_design is used by xfce4 power manager so the values match)
ChangeLog: battery plugin: read linux sysfs charge files