linux-kernel - Re: [PATCH] dell-wmi: add module param to control Dell Instant Launch hotkey processing

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Message-ID: <20151130205542.GD30553@malice.jf.intel.com>
Date:	Mon, 30 Nov 2015 12:55:42 -0800
From:	Darren Hart <dvhart@...radead.org>
To:	Michał Kępień <kernel@...pniu.pl>
Cc:	Pali Rohár <pali.rohar@...il.com>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dell-wmi: add module param to control Dell Instant
 Launch hotkey processing

On Mon, Nov 30, 2015 at 03:54:58PM +0100, Michał Kępień wrote:
> > The best would be if embedded controller could be configured to send
> > events via i8042 bus...
> 
> Yes, but if I correctly understand Mario's message back from July [1],
> V131's EC simply does not support generating scancodes at all.
> 
> > I'm starting to thing that blacklist or whitelist of machines is needed
> > to collect. And via it decide if WMI event will be accepted or dropped.
> 
> If you believe this is the way to go, I'm perfectly fine with that.

This is a common approach among platform drivers since we try to support
multiple products with a single driver.

Ideally, we could detect if this was necessary by the response of some ACPI call
or another, but failing that, DMI matching is our fallback.

-- 
Darren Hart
Intel Open Source Technology Center
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