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 13:34:52 +0800
From:	Peter Chen <peter.chen@...escale.com>
To:	Baolin Wang <baolin.wang@...aro.org>
CC:	<balbi@...com>, <broonie@...nel.org>,
	<linux-kernel@...r.kernel.org>, <gregkh@...uxfoundation.org>,
	<sojka@...ica.cz>, <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 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.

> 
> 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
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