linux-kernel - Re: [PATCH v9 1/4] gadget: Introduce the usb charger framework

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Message-ID: <87vb3v2nm8.fsf@intel.com>
Date:	Wed, 06 Apr 2016 10:38:23 +0300
From:	Felipe Balbi <balbi@...nel.org>
To:	Peter Chen <hzpeterchen@...il.com>,
	Baolin Wang <baolin.wang@...aro.org>
Cc:	gregkh@...uxfoundation.org, 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 v9 1/4] gadget: Introduce the usb charger framework

Peter Chen <hzpeterchen@...il.com> writes:
> On Fri, Apr 01, 2016 at 03:21:49PM +0800, Baolin Wang wrote:
>  +
>> +static struct attribute *usb_charger_attrs[] = {
>> +	&dev_attr_sdp_current.attr,
>> +	&dev_attr_dcp_current.attr,
>> +	&dev_attr_cdp_current.attr,
>> +	&dev_attr_aca_current.attr,
>> +	&dev_attr_charger_type.attr,
>> +	&dev_attr_charger_state.attr,
>> +	NULL
>> +};
>
> The user may only care about current limit, type and state, why they
> need to care what type's current limit, it is the usb charger
> framework handles, the framework judge the current according to
> charger type and USB state (connect/configured/suspended).

it might be useful if we want to know that $this charger doesn't really
give us as much current as it advertises.

-- 
balbi

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