Re: [PATCH v2 0/3] Introduce usb charger framework to deal with the usb gadget power negotation

[Li Jun]

On Fri, Aug 14, 2015 at 07:04:56PM +0800, Baolin Wang wrote:
> On 14 August 2015 at 16:55, Li Jun <b47624@xxxxxxxxxxxxx> wrote:
> > Hi Baolin,
> >
> > On Fri, Aug 14, 2015 at 05:47:43PM +0800, Baolin Wang wrote:
> >> Currently the Linux kernel does not provide any standard integration of this
> >> feature that integrates the USB subsystem with the system power regulation
> >> provided by PMICs meaning that either vendors must add this in their kernels
> >> or USB gadget devices based on Linux (such as mobile phones) may not behave
> >> as they should.
> >>
> >> Providing a standard framework for doing this in the kernel.
> >>
> >
> > Why not add power supply class support into this?
> >
> 
> Hi Jun,
> 
> We don't need the power supply class support into the usb charger,
I suppose usb charger is also a power supply for the system, we can use power
supply class framework for notify mechanism and get/set many attributes(maybe
also the current limit), I see those usb charger drivers under ./driver/power/
are designed with power supply supported.

Li Jun
> just introduce the notify mechanism for power to set the current limit
> when notifying some events from usb charger. Maybe I misunderstand
> your meanings, please describe it detailedly. Thanks for your
> comments.
> 
> > Li Jun
> >
> 
> 
> 
> -- 
> Baolin.wang
> Best Regards
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