linux-kernel - Re: [PATCH 3/5] drivers: thermal: make usage of CONFIG_THERMAL

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Date:	Wed, 28 Aug 2013 09:15:50 -0400
From:	Eduardo Valentin <eduardo.valentin@...com>
To:	Zhang Rui <rui.zhang@...el.com>
CC:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Eduardo Valentin <eduardo.valentin@...com>,
	<linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	Anton Vorontsov <anton@...msg.org>,
	David Woodhouse <dwmw2@...radead.org>,
	<devicetree@...r.kernel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Len Brown <lenb@...nel.org>, <linux-acpi@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-samsung-soc@...r.kernel.org>,
	Matthew Garrett <matthew.garrett@...ula.com>,
	Peter Feuerer <peter@...e.net>,
	<platform-driver-x86@...r.kernel.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Lan Tianyu <tianyu.lan@...el.com>
Subject: Re: [PATCH 3/5] drivers: thermal: make usage of CONFIG_THERMAL_HWMON
 optional

On 27-08-2013 20:13, Zhang Rui wrote:
> On 二, 2013-08-27 at 23:17 +0200, Rafael J. Wysocki wrote:
>> On Tuesday, August 27, 2013 02:26:41 PM Eduardo Valentin wrote:
>>> On 23-08-2013 19:08, Rafael J. Wysocki wrote:
>>>> On Friday, August 23, 2013 06:03:14 PM Eduardo Valentin wrote:
>>>>> When registering a new thermal_device, the thermal framework
>>>>> will always add a hwmon sysfs interface.
>>>>>
>>>>> This patch adds a flag to make this behavior optional. Now
>>>>> when registering a new thermal device, the caller needs
>>>>> to say if the hwmon interface is required.
>>>>>
>>>>> In order to keep same behavior as of today, all current
>>>>> calls will by default create the hwmon interface.
>>>>
>>>> Well, instead of modifying all of the callers this way, why don't
>>>> you add new versions taking the additional argument as, for example,
>>>>
>>>> thermal_zone_device_register_full()
>>>>
>>>> and redefine the old ones as static inline wrappers, for example
>>>>
>>>> static inline struct thermal_zone_device *thermal_zone_device_register(args)
>>>> {
>>>> 	return thermal_zone_device_register_full(args, true);
>>>> }
>>>>
>>>> ?
>>>
>>> Yeah, that is another way to go and I thought of doing it like that. I
>>> just could not come out with a good API naming:
>>>
>>> thermal_zone_device_register_full(all args)
>>>
>>> thermal_zone_device_register(args) /* on hwmon == true */
>>> thermal_zone_device_register_no_hwmon(args) /* on hwmon == false */
>>>
>>> Would this sound reasonable naming?
>>
>> Yeah, sounds good to me.
>>
> Well, actually, Tianyu is working on a patch set to move all the
> thermal_zone_device_register() parameters to struct thermal_zone_params.
> 
> But with that patch set done, what you need to do next is just to
> introduce a new field in struct thermal_zone_params and make sure 0
> means registering hwmon sysfs I/F.

Rui,

Do you have a pointer to his patch?

> 
> thanks,
> rui
> 
>> Thanks,
>> Rafael
>>
> 
> 
> 
> 


-- 
You have got to be excited about what you are doing. (L. Lamport)

Eduardo Valentin


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