linux-kernel - RE: problem: Re: [PATCH] input: fixup X86

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Date:	Mon, 28 Jun 2010 16:22:03 -0700
From:	"Pan, Jacob jun" <jacob.jun.pan@...el.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	Randy Dunlap <randy.dunlap@...cle.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	akpm <akpm@...ux-foundation.org>,
	"chuck.lever@...cle.com" <chuck.lever@...cle.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: RE: problem: Re: [PATCH] input: fixup X86_MRST selects

There is no DMI support yet in MRST FW.
We have a new x86 HW subarch ID in boot_param, then we use it to select x86_init abstractions. Both boot_param and x86_init are x86 arch specific so I guess we can use them in 8042 driver under CONFIG_X86. Not sure if it is possible to move x86 i8042_platform_init under x86_init (the x86 part).

>-----Original Message-----
>From: Dmitry Torokhov [mailto:dmitry.torokhov@...il.com]
>Sent: Monday, June 28, 2010 3:45 PM
>To: Pan, Jacob jun
>Cc: Randy Dunlap; Stephen Rothwell; linux-next@...r.kernel.org; LKML;
>linux-input@...r.kernel.org; akpm; chuck.lever@...cle.com; H. Peter
>Anvin
>Subject: Re: problem: Re: [PATCH] input: fixup X86_MRST selects
>
>On Mon, Jun 28, 2010 at 02:12:03PM -0700, Pan, Jacob jun wrote:
>> >
>> We do intend to maintain binary compatibility between generic kernel
>and Moorestown.
>> I guess the challenge is not having enumeration of i8042 pass to the
>driver. Do you
>> prefer abort i8042_platform_init() based on #define CONFIG_X86_MRST?
>It is no safe
>> to probe HW on Moorestown, unfortunately.
>
>Any check based on CONFIG_X86_MRST means that kernel is not generic.
>We'd need a runtime check (but not necessarily one that bangs ports). Is
>there something in processor flags, or DMI, or similar that woudl allow
>i8042 to see that it runs on Moorestown?
>
>--
>Dmitry
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