|  | What: /sys/class/power_supply/twl4030_usb/mode | 
|  | Description: | 
|  | Changing mode for USB port. | 
|  | Writing to this can disable charging. | 
|  |  | 
|  | Possible values are: | 
|  |  | 
|  | =============	=========================================== | 
|  | "auto"		draw power as appropriate for detected | 
|  | power source and battery status. | 
|  | "off"		do not draw any power. | 
|  | "continuous"	activate mode described as "linear" in | 
|  | TWL data sheets.  This uses whatever | 
|  | current is available and doesn't switch off | 
|  | when voltage drops. | 
|  |  | 
|  | This is useful for unstable power sources | 
|  | such as bicycle dynamo, but care should | 
|  | be taken that battery is not over-charged. | 
|  | =============	=========================================== | 
|  |  | 
|  | What: /sys/class/power_supply/twl4030_ac/mode | 
|  | Description: | 
|  | Changing mode for 'ac' port. | 
|  | Writing to this can disable charging. | 
|  |  | 
|  | Possible values are: | 
|  |  | 
|  | ======	=========================================== | 
|  | "auto"	draw power as appropriate for detected | 
|  | power source and battery status. | 
|  | "off"	do not draw any power. | 
|  | ======	=========================================== |