Re: [RFC PATCH 5/6] ACPI: Introduce ACPI I2C controller enumeration driver

-----Original Message-----
From: Alan Cox [mailto:alan@lxorguk.ukuu.org.uk]
Sent: Friday, September 28, 2012 8:54 PM
To: Zhang, Rui
Cc: LKML; linux-pm; linux-i2c; linux-acpi@vger.kernel.org; Len, Brown;
Rafael J. Wysocki; Grant Likely; Dirk Brandewie
Subject: Re: [RFC PATCH 5/6] ACPI: Introduce ACPI I2C controller
enumeration driver
Importance: High

On Fri, 28 Sep 2012 15:40:32 +0800
Zhang Rui [off-list ref] wrote:

quoted

quoted

From 6077a62f2865201ab6727ca7d628ee5e43aa57e1 Mon Sep 17 00:00:00
2001

From: Zhang Rui <rui.zhang@intel.com>
Date: Fri, 24 Aug 2012 15:18:25 +0800
Subject: [RFC PATCH 5/6] ACPI: Introduce ACPI I2C controller
enumeration  driver

This driver is able to
1) enumerate I2C controller via ACPI namespace
   and register it as a platform device.
2) enumerate I2C slave devices via ACPI namespace.

Will this also trigger and work with the ACPI4 based devices that seem
to have I²C tables that Linux currently doesn't understand (eq some
GMA600/Oaktrail platforms) ?

I'm not aware of this. I think the answer is probably "No"
because these PNPids are pretty new.
But we can check FADT.revision to make the driver work
on ACPI5 platforms only.

Thanks,
rui