linux-kernel - Re: [Resend Patch 0/9] I2C ACPI operation region handler support

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Date:	Wed, 23 Apr 2014 16:03:28 -0700
From:	Adam Williamson <awilliam@...hat.com>
To:	Lan Tianyu <tianyu.lan@...el.com>
Cc:	wsa@...-dreams.de, rjw@...ysocki.net,
	mika.westerberg@...ux.intel.com, lenb@...nel.org,
	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: Re: [Resend Patch 0/9] I2C ACPI operation region handler support

On Tue, 2014-04-22 at 14:24 +0800, Lan Tianyu wrote:
> ACPI 5.0 spec(5.5.2.4.5) defines GenericSerialBus(i2c, spi, uart) operation
> region. It allows ACPI aml code able to access such kind of devices to
> implement some ACPI standard method.
> 
> On the Asus T100TA, Bios use GenericSerialBus operation region to access
> i2c device to get battery info. So battery function depends on the I2C
> operation region support. Here is the bug link.
> https://bugzilla.kernel.org/show_bug.cgi?id=69011
> 
> This patchset is to add I2C ACPI operation region handler support.

For what it's worth, I've tested this patchset with the exception of
patch 9/9 - which I leave out because it would require annoying fiddling
with my kernel builds - and it gives apparently-accurate battery/AC
information on my Venue 8 Pro.

It doesn't *obviously* cause any other problems, though there are a few
other issues I'm dealing with ATM. If any of them turn out to be related
to this patch set, I'll send a follow-up.
-- 
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | XMPP: adamw AT happyassassin . net
http://www.happyassassin.net

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