linux-kernel - RE: [PATCH 3/4] dell-wmi: Add information about other WMI event codes

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Message-ID: <01b8e172bca546728b596c8cc4ebd932@ausx13mpc124.AMER.DELL.COM>
Date:	Wed, 8 Jun 2016 06:02:29 +0000
From:	<Mario_Limonciello@...l.com>
To:	<pali.rohar@...il.com>, <gabriele.mzt@...il.com>
CC:	<mjg59@...f.ucam.org>, <dvhart@...radead.org>, <kernel@...pniu.pl>,
	<luto@...nel.org>, <alex.hung@...onical.com>,
	<platform-driver-x86@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 3/4] dell-wmi: Add information about other WMI event codes

> -----Original Message-----
> From: Pali Rohár [mailto:pali.rohar@...il.com]
> Sent: Tuesday, June 7, 2016 6:00 PM
> To: Gabriele Mazzotta <gabriele.mzt@...il.com>; Limonciello, Mario
> <Mario_Limonciello@...l.com>
> Cc: Matthew Garrett <mjg59@...f.ucam.org>; Darren Hart
> <dvhart@...radead.org>; Michał Kępień <kernel@...pniu.pl>; Andy Lutomirski
> <luto@...nel.org>; Alex Hung <alex.hung@...onical.com>; platform-driver-
> x86@...r.kernel.org; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH 3/4] dell-wmi: Add information about other WMI event
> codes
> 
> On Friday 27 May 2016 00:04:23 Gabriele Mazzotta wrote:
> > On 22/05/2016 13:36, Pali Rohár wrote:
> > > ACPI DSDT tables have defined other WMI codes, but does not contain
> > > any description when those codes are emitted. Some other codes can
> > > be found in logs on internet. In this patch are all which I saw, but
> > > lot of them are not tested properly (e.g. for duplicate events with
> > > AT keyboard). Now we have all WMI event codes at one place and in
> > > future after proper testing those codes can be correctly enabled or
> disabled...
> > >
> > > Signed-off-by: Pali Rohár <pali.rohar@...il.com>
> > > ---
> > >  drivers/platform/x86/dell-wmi.c |   32
> ++++++++++++++++++++++++++++++++
> > >  1 file changed, 32 insertions(+)
> > >
> > > diff --git a/drivers/platform/x86/dell-wmi.c
> > > b/drivers/platform/x86/dell-wmi.c index 363d927..7aac1dc 100644
> > > --- a/drivers/platform/x86/dell-wmi.c
> > > +++ b/drivers/platform/x86/dell-wmi.c
> > > @@ -110,6 +110,9 @@ static const struct key_entry
> dell_wmi_legacy_keymap[] __initconst = {
> > >  	/* BIOS error detected */
> > >  	{ KE_IGNORE, 0xe00d, { KEY_RESERVED } },
> > >
> > > +	/* Unknown, defined in ACPI DSDT */
> > > +	/* { KE_IGNORE, 0xe00e, { KEY_RESERVED } }, */
> > > +
> >
> > I'm interested in knowing what's the meaning of this 0xe00e. This
> > event is sent multiple times when I suspend/resume my laptop and it's
> > definitely not a keypress.
> 
> From DSDT dumps which I have seen, I guess it could be something with battery
> charging... but that is only my guess.
> 
> Mario, do you have any idea, what these unknown events are?

Off-hand I'm not sure, it would require some more digging.

Can you please remind me what model numbers and BIOS combinations you have 
found e00e in DSDT and what context the events are actually happening?   
Anything released in the past two years?