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linux-sg2042/Documentation/ABI/testing/sysfs-class-power-twl4030

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twl4030_charger: enable manual enable/disable of usb charging. 'off' or 'auto' to /sys/class/power/twl4030_usb/mode will now enable or disable charging from USB port. Normally this is enabled on 'plug' and disabled on 'unplug'. Unplug will still disable charging. 'plug' will only enable it if 'auto' if selected. Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: NeilBrown <neil@brown.name> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-07-30 08:11:24 +08:00
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.
twl4030_charger: add software controlled linear charging mode. Add a 'continuous' option for usb charging which enables the "linear" charging mode of the twl4030. Linear charging does a good job with not-so-reliable power sources. Auto mode does not work well as it switches off when voltage drops momentarily. Care must be taken not to over-charge. It was used with a bike hub dynamo since a year or so. In that case there are automatically charging stops when the cyclist needs a break. Original-by: Andreas Kemnade <andreas@kemnade.info> Signed-off-by: NeilBrown <neil@brown.name> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-07-30 08:11:24 +08:00
"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.
twl4030_charger: add ac/mode to match usb/mode This allows AC charging to be turned off, much like usb charging. "continuous" mode is not available though. Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: NeilBrown <neil@brown.name> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-07-30 08:11:24 +08:00
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.