linux-kernel - Re: [PATCH v10 0/4] Introduce usb charger framework to deal with the usb gadget power negotation

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Date:	Mon, 18 Apr 2016 13:45:53 +0800
From:	Baolin Wang <baolin.wang@...aro.org>
To:	Felipe Balbi <balbi@...nel.org>,
	Greg KH <gregkh@...uxfoundation.org>,
	Sebastian Reichel <sre@...nel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>
Cc:	Peter Chen <peter.chen@...escale.com>,
	Alan Stern <stern@...land.harvard.edu>, r.baldyga@...sung.com,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	Lee Jones <lee.jones@...aro.org>,
	Mark Brown <broonie@...nel.org>,
	Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>,
	patches@...nsource.wolfsonmicro.com,
	Baolin Wang <baolin.wang@...aro.org>,
	Linux PM list <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 v10 0/4] Introduce usb charger framework to deal with the
 usb gadget power negotation

Hi Felipe,

What do you think of this version patchset? Could you review this
patchset when you feel free? I really hope to move the usb charger
forwards with suggestions. Thanks.

On 7 April 2016 at 19:48, Baolin Wang <baolin.wang@...aro.org> 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 v9:
>  - Remove some redundant sysfs attributes.
>  - Change the SDP charger default current if gadget is SS.
>  - Remove the 'get_charger_type' callback in gadget->ops.
>
> 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
>
>  drivers/power/wm831x_power.c      |   69 ++++
>  drivers/usb/gadget/Kconfig        |    7 +
>  drivers/usb/gadget/udc/Makefile   |    1 +
>  drivers/usb/gadget/udc/charger.c  |  766 +++++++++++++++++++++++++++++++++++++
>  drivers/usb/gadget/udc/udc-core.c |   11 +
>  include/linux/mfd/wm831x/pdata.h  |    3 +
>  include/linux/usb/charger.h       |  173 +++++++++
>  include/linux/usb/gadget.h        |   13 +
>  include/uapi/linux/usb/charger.h  |   31 ++
>  9 files changed, 1074 insertions(+)
>  create mode 100644 drivers/usb/gadget/udc/charger.c
>  create mode 100644 include/linux/usb/charger.h
>  create mode 100644 include/uapi/linux/usb/charger.h
>
> --
> 1.7.9.5
>



-- 
Baolin.wang
Best Regards