linux-kernel - Re: [PATCH] Platform: add Samsung Laptop platform driver

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Date:	Wed, 9 Feb 2011 15:02:59 -0800
From:	Greg KH <greg@...ah.com>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Randy Dunlap <rdunlap@...otime.net>, linux-kernel@...r.kernel.org,
	platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH] Platform: add Samsung Laptop platform driver

On Wed, Feb 09, 2011 at 10:50:56PM +0000, Matthew Garrett wrote:
> \o/
> 
> A quick glance suggests that the firmware interface is an abomination 
> and really there's no reason for them not to have used an existing 
> interface of some sort, but that's par for the course. I'll review it 
> properly now.

The firmware interface pre-dates ACPI.  Samsung seems to have only
started using ACPI for their newest models, as it's a requirement for
Win7 certification.  But even there, they still rely on their SABI
interface for the majority of the "odd" hardware control knobs,
including the backlight control, which baffles me even to this day.

thanks,

greg k-h
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