1What: /sys/class/power_supply/twl4030_ac/max_current 2 /sys/class/power_supply/twl4030_usb/max_current 3Description: 4 Read/Write limit on current which may 5 be drawn from the ac (Accessory Charger) or 6 USB port. 7 8 Value is in micro-Amps. 9 10 Value is set automatically to an appropriate 11 value when a cable is plugged or unplugged. 12 13 Value can the set by writing to the attribute. 14 The change will only persist until the next 15 plug event. These event are reported via udev. 16 17 18What: /sys/class/power_supply/twl4030_usb/mode 19Description: 20 Changing mode for USB port. 21 Writing to this can disable charging. 22 23 Possible values are: 24 "auto" - draw power as appropriate for detected 25 power source and battery status. 26 "off" - do not draw any power. 27 "continuous" 28 - activate mode described as "linear" in 29 TWL data sheets. This uses whatever 30 current is available and doesn't switch off 31 when voltage drops. 32 33 This is useful for unstable power sources 34 such as bicycle dynamo, but care should 35 be taken that battery is not over-charged. 36 37What: /sys/class/power_supply/twl4030_ac/mode 38Description: 39 Changing mode for 'ac' port. 40 Writing to this can disable charging. 41 42 Possible values are: 43 "auto" - draw power as appropriate for detected 44 power source and battery status. 45 "off" - do not draw any power. 46