linux-kernel - Re: sonypc with Sony Vaio VGN-SZ1VP

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Message-Id: <200609282348.58888.luming.yu@gmail.com>
Date:	Thu, 28 Sep 2006 23:48:58 +0800
From:	Yu Luming <luming.yu@...il.com>
To:	Ismail Donmez <ismail@...dus.org.tr>
Cc:	Len Brown <lenb@...nel.org>, Andrew Morton <akpm@...l.org>,
	Stelian Pop <stelian@...ies.net>,
	Andrea Gelmini <gelma@...ma.net>, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: Re: sonypc with Sony Vaio VGN-SZ1VP

On Wednesday 27 September 2006 15:50, Ismail Donmez wrote:
> Hi,
> 27 Eyl 2006 Çar 09:04 tarihinde, Len Brown şunları yazmıştı:
> [...]
>
> > > > Will sony_acpi ever make it to the mainline? Its very useful for new
> > > > Vaio models.
> >
> > Nope, not as it is.  Useful != supportable.
> >
> > 1. It must not create any files under /proc/acpi
> >     This is creating a machine-specific API, which
> >     is exactly what we don't want  Nobody can maintain
> >     50 machine specific APIs.
> >
> >     These objects must appear generic and under sysfs
> >     as if acpi were not involved in providing them.

Yes, the idea of generic code and sysfs things can
remove the supportable issues as to complete different
user interface exposed in /proc/acpi/ by different
platform specific drivers such as ibm_acpi.c,
asus_acpi.c, and toshiba_acpi.c,....

> >
> > 2. its source code shall not live in drivers/acpi
> >     it is not part of the ACPI implementation after all --
> >     it is a platform specific driver.
>
> Is there a such example code under kernel now, so one could look at it and
> fix sony_acpi driver.

Please take a look at drivers/video/backlight..
And here is a example to use backlight class for acpi video driver:
http://marc.theaimsgroup.com/?l=linux-acpi&m=115574087203605&w=2

Please let me know if you have any other ideas to consolidate the
platform specific drivers such as ibm_acpi.c ,asus_acpi.c, toshiba_acpi.c
panasonic_acpi.c, sony_acpi.c , msi s270.c .....

Thanks,
Luming

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