linux-kernel - Re: [PATCH 1/2] RFC: ACPI: Interface for ACPI drivers to place quirk code which gets executed early

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Date:	Tue, 3 Feb 2009 14:45:17 +0100
From:	Luca Tettamanti <kronos.it@...il.com>
To:	Thomas Renninger <trenn@...e.de>
Cc:	Jean Delvare <khali@...ux-fr.org>,
	Hans de Goede <hdegoede@...hat.com>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Len Brown <lenb@...nel.org>
Subject: Re: [PATCH 1/2] RFC: ACPI: Interface for ACPI drivers to place quirk 
	code which gets executed early

On Tue, Feb 3, 2009 at 2:08 PM, Thomas Renninger <trenn@...e.de> wrote:
> On Monday 02 February 2009 21:22:46 Luca Tettamanti wrote:
>> Il Mon, Feb 02, 2009 at 06:22:10PM +0100, Thomas Renninger ha scritto:
>> > These two patches are tested on a ASUS machine and worked as expected,
>> > but probably may still need some cleanup.
>>
>> I'd keep the DMI+HID approach since it's more flexible:
>> - (AFAICS) Thinkpads have different methods for hwmon depending on the
>>   model and no fixed HID
>> - With DMI it would be possible to include ASUS motherboards (ATK w/
>>   hwmon) but exclude ASUS laptops (ATK w/o hwmon).
> I thought the ATK01[01]0 devices are ASUS specific.

Me too, I was thinking about using DMI_CHASSIS_TYPE to restrict the
match only to motherboard (not notebooks).

> I now found an ATK0100 (not the ATK0110 this is about) on a Sony and a
> Samsung.
> I still wonder why you want to restrict the check to ASUS.
> Your ATK0110 driver would also load on any other machine which has such
> a device. And why shouldn't a Samsung/Sony/... machine with a ATK0110
> device not access the hwmon sensor through it?

Ah, I was unaware that it was used also by other vendors. It the same
interface though? Do you have a dump of the DSDT of such machines?

> Should we already look a bit deeper into the ATK0110 device in the quirk
> to make sure it provides thermal, fan or other hwmon device accessing
> functionality?

Hum, maybe it's the best thing to do. Hans,  Jean what do you think?

Luca
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