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: <87wpp2hcdr.fsf@intel.com>
Date:	Wed, 16 Mar 2016 13:48:32 +0200
From:	Felipe Balbi <balbi@...nel.org>
To:	Baolin Wang <baolin.wang@...aro.org>, gregkh@...uxfoundation.org,
	sre@...nel.org, dbaryshkov@...il.com, dwmw2@...radead.org
Cc:	peter.chen@...escale.com, stern@...land.harvard.edu,
	r.baldyga@...sung.com, yoshihiro.shimoda.uh@...esas.com,
	lee.jones@...aro.org, broonie@...nel.org,
	ckeepax@...nsource.wolfsonmicro.com,
	patches@...nsource.wolfsonmicro.com, baolin.wang@...aro.org,
	linux-pm@...r.kernel.org, linux-usb@...r.kernel.org,
	device-mainlining@...ts.linuxfoundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 0/4] Introduce usb charger framework to deal with the usb gadget power negotation


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)

-- 
balbi

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