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: <20160125034405.GA25279@kroah.com>
Date:	Sun, 24 Jan 2016 19:44:05 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Baolin Wang <baolin.wang@...aro.org>
Cc:	balbi@...com, sre@...nel.org, dbaryshkov@...il.com,
	dwmw2@...radead.org, 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, 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

On Mon, Jan 04, 2016 at 11:04:26AM +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. 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 "4.4-rc7". 

You already sent out v7, so this should be v8, right?  What changed
since v7?  Why resend it if nothing changed?

confused,

greg k-h