linux-kernel - Re: [PATCH v7 0/4] Introduce usb charger framework to deal with the usb gadget power negotation

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Message-ID: <CAMz4kuLU=tps0yVPJMR34G-HLL-cwML+N4LTj_G0ohtvK9DYOg@mail.gmail.com>
Date:	Wed, 16 Mar 2016 19:56:33 +0800
From:	Baolin Wang <baolin.wang@...aro.org>
To:	Felipe Balbi <balbi@...nel.org>
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	Sebastian Reichel <sre@...nel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Peter Chen <peter.chen@...escale.com>,
	Alan Stern <stern@...land.harvard.edu>, r.baldyga@...sung.com,
	yoshihiro.shimoda.uh@...esas.com, Lee Jones <lee.jones@...aro.org>,
	Mark Brown <broonie@...nel.org>,
	ckeepax@...nsource.wolfsonmicro.com,
	patches@...nsource.wolfsonmicro.com, linux-pm@...r.kernel.org,
	USB <linux-usb@...r.kernel.org>,
	device-mainlining@...ts.linuxfoundation.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 0/4] Introduce usb charger framework to deal with the
 usb gadget power negotation

On 16 March 2016 at 19:48, Felipe Balbi <balbi@...nel.org> wrote:
>
> Hi Baolin,
>
> Baolin Wang <baolin.wang@...aro.org> writes:
>> [ text/plain ]
>> 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. Thus provide a standard framework for doing this in kernel.
>>
>> Now introduce one user with wm831x_power to support and test the usb charger,
>> which is pending testing. Moreover there may be other potential users will use
>> it in future.
>>
>> Changes since v5:
>>  - Remove the notifier chain things from the gadget and introduce one callback
>>  function to report to the usb charger when the gadget state is changed.
>>  - Flesh out the port type detection which combines the USB negotiation and
>>  PMICs detection.
>>  - Supply the notification mechanism to userspace when charger state is changed.
>>  - Integrate with the vbus staff in the gadget API.
>>  - Spilt up the functionality for userspace with one file per USB charger type.
>>  - Rebase on "4.5-rc4".
>>
>> Baolin Wang (4):
>>   gadget: Introduce the usb charger framework
>>   gadget: Support for the usb charger framework
>>   gadget: Integrate with the usb gadget supporting for usb charger
>>   power: wm831x_power: Support USB charger current limit management
>
> Thank you for resending this. I'll review it ASAP (probably tomorrow
> when I get to the office. If I have time, still today)

OK. Thanks:)

>
> --
> balbi



-- 
Baolin.wang
Best Regards