linux-kernel - Re: [PATCH v2 1/2] gpio / CrystalCove: support virtual GPIO

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Message-ID: <5424F80D.9070400@intel.com>
Date:	Fri, 26 Sep 2014 13:22:21 +0800
From:	Aaron Lu <aaron.lu@...el.com>
To:	Linus Walleij <linus.walleij@...aro.org>
CC:	Alexandre Courbot <gnurou@...il.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>,
	Arnd Bergmann <arnd@...db.de>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jacob Pan <jacob.jun.pan@...ux.intel.com>,
	Lejun Zhu <lejun.zhu@...el.com>,
	Radivoje Jovanovic <radivoje.jovanovic@...el.com>,
	Daniel Glöckner 
	<dg@...ix.com>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>
Subject: Re: [PATCH v2 1/2] gpio / CrystalCove: support virtual GPIO

On 09/25/2014 09:16 PM, Linus Walleij wrote:
> On Thu, Sep 25, 2014 at 4:57 AM, Aaron Lu <aaron.lu@...el.com> wrote:
> 
>> The virtual GPIO introduced in ACPI table of Baytrail-T based system is
>> used to solve a problem under Windows. We do not have such problems
>> under Linux so we do not actually need them. But we have to tell GPIO
>> library that the Crystal Cove GPIO chip has this many GPIO pins or the
>> common GPIO handler will refuse any access to those high number GPIO
>> pins, which will resulted in a failure evaluation of every ACPI control
>> method that is used to turn on/off power resource and/or report sensor
>> temperatures.
>>
>> Signed-off-by: Aaron Lu <aaron.lu@...el.com>
>> ---
>> v2: remove the hunk to increase NR_GPIO to 512.
> 
> Patch applied with Mika's ACK, also renumbered 0x5e to 94.

Thanks for taking care of this.

Regards,
Aaron

> 
> Yours,
> Linus Walleij
> 

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