linux-kernel - Re: [PATCH 0/2] Introduce usb charger framework to deal with the usb gadget power negotation

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Date:	Fri, 7 Aug 2015 16:19:40 +0800
From:	Baolin Wang <baolin.wang@...aro.org>
To:	Peter Chen <peter.chen@...escale.com>
Cc:	Felipe Balbi <balbi@...com>, Mark Brown <broonie@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...uxfoundation.org>, sojka@...ica.cz,
	Alan Stern <stern@...land.harvard.edu>, andreas@...sler.com,
	linux-usb@...r.kernel.org,
	device-mainlining@...ts.linuxfoundation.org
Subject: Re: [PATCH 0/2] Introduce usb charger framework to deal with the usb
 gadget power negotation

On 7 August 2015 at 13:34, Peter Chen <peter.chen@...escale.com> wrote:
> On Thu, Aug 06, 2015 at 03:03:47PM +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.
>
> Baolin, thanks for introducing a framework for doing it, we do support
> USB Charger for chipidea driver at internal tree, but it is specific
> for imx, and still have some problems to upstream due to need to
> change some common code.
>
> One suggestion, would you add your user next time? In that case, we can
> know better for this framework.
>

Peter, Thanks for your reviewing and comments. Now I just introduce
the framework to review for more feedbacks and do not have a useful
user to use it. I just can show you some example code to show how to
use it. Thanks.

>>
>> Baolin Wang (2):
>>   gadget: Introduce the usb charger framework
>>   gadget: Support for the usb charger framework
>>
>>  drivers/usb/gadget/charger.c      |  547 +++++++++++++++++++++++++++++++++++++
>>  drivers/usb/gadget/udc/udc-core.c |   41 +++
>>  include/linux/usb/gadget.h        |   20 ++
>>  include/linux/usb/usb_charger.h   |  101 +++++++
>>  4 files changed, 709 insertions(+)
>>  create mode 100644 drivers/usb/gadget/charger.c
>>  create mode 100644 include/linux/usb/usb_charger.h
>>
>> --
>> 1.7.9.5
>>
>
> --
>
> Best Regards,
> Peter Chen



-- 
Baolin.wang
Best Regards
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