On Tue, Sep 22, 2015 at 05:10:45PM -0500, Andreas Dannenberg wrote: > On Tue, Sep 22, 2015 at 09:16:49PM +0200, Sebastian Reichel wrote: > > On Fri, Sep 18, 2015 at 04:39:57PM -0500, Andreas Dannenberg wrote: > > > This patch allows reading (and writing, if the D+/D- USB signal-based > > > charger type detection is disabled) of the input current limit through > > > the power supply's input_current_limit sysfs property. This allows > > > userspace to see what charger was detected and to re-configure the > > > maximum current drawn from the external supply at runtime based on > > > system-level knowledge or user input. > > > > Maybe also support writing into input_current_limit in auto mode. > > Just disable auto detection until "auto" is written into sysfs node. > > Auto-detection was enabled by default in the original driver so I think > that should be left intact. I added the ability to manually override > this via DT with a fixed value, and then configure said fixed value > through sysfs at runtime. > > I'm not 100% clear on the usecase of runtime enabling/disabling auto so > I'd rather leave the implementation as-is. Either auto mode is enabled > or not -- and this is directly tied to the DT setting. But if someone > has a strong usecase for this I can certainly add it. For some usb power supplies auto-detection doesn't work very well, resulting in a 100mA default fallback. Users knowing their hardware could force charging with the correct input current limitation. -- Sebastian
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