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

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Date:	Wed, 8 Jun 2016 01:00:08 +0200
From:	Pali Rohár <pali.rohar@...il.com>
To:	Gabriele Mazzotta <gabriele.mzt@...il.com>,
	Mario Limonciello <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?

> Anyway, I've been using this patch set and didn't notice any issue, so
> 
> Tested-by: Gabriele Mazzotta <gabriele.mzt@...il.com>
> 
> >  	/* Wifi Catcher */
> >  	{ KE_KEY,    0xe011, { KEY_PROG2 } },
> >  
> > @@ -118,21 +121,45 @@ static const struct key_entry dell_wmi_legacy_keymap[] __initconst = {
> >  
> >  	{ KE_IGNORE, 0xe020, { KEY_MUTE } },
> >  
> > +	/* Unknown, defined in ACPI DSDT */
> > +	/* { KE_IGNORE, 0xe023, { KEY_RESERVED } }, */
> > +
> > +	/* Untested, Dell Instant Launch key on Inspiron 7520 */
> > +	/* { KE_IGNORE, 0xe024, { KEY_RESERVED } }, */
> > +
> >  	/* Dell Instant Launch key */
> >  	{ KE_KEY,    0xe025, { KEY_PROG4 } },
> >  
> >  	/* Audio panel key */
> >  	{ KE_IGNORE, 0xe026, { KEY_RESERVED } },
> >  
> > +	/* Untested, Multimedia key on Dell Vostro 3560 */
> > +	/* { KE_IGNORE, 0xe028, { KEY_RESERVED } }, */
> > +
> >  	/* Dell Instant Launch key */
> >  	{ KE_KEY,    0xe029, { KEY_PROG4 } },
> >  
> > +	/* Untested, Windows Mobility Center button on Inspiron 7520 */
> > +	/* { KE_IGNORE, 0xe02a, { KEY_RESERVED } }, */
> > +
> > +	/* Unknown, defined in ACPI DSDT */
> > +	/* { KE_IGNORE, 0xe02b, { KEY_RESERVED } }, */
> > +
> > +	/* Untested, Dell Audio With Preset Switch button on Inspiron 7520 */
> > +	/* { KE_IGNORE, 0xe02c, { KEY_RESERVED } }, */
> > +
> >  	{ KE_IGNORE, 0xe02e, { KEY_VOLUMEDOWN } },
> >  	{ KE_IGNORE, 0xe030, { KEY_VOLUMEUP } },
> >  	{ KE_IGNORE, 0xe033, { KEY_KBDILLUMUP } },
> >  	{ KE_IGNORE, 0xe034, { KEY_KBDILLUMDOWN } },
> >  	{ KE_IGNORE, 0xe03a, { KEY_CAPSLOCK } },
> >  
> > +	/* NIC Link is Up */
> > +	{ KE_IGNORE, 0xe043, { KEY_RESERVED } },
> > +
> > +	/* NIC Link is Down */
> > +	{ KE_IGNORE, 0xe044, { KEY_RESERVED } },
> > +
> >  	/*
> >  	 * This entry is very suspicious!
> >  	 * Originally Matthew Garrett created this dell-wmi driver specially for
> > @@ -145,7 +172,12 @@ static const struct key_entry dell_wmi_legacy_keymap[] __initconst = {
> >  	 */
> >  	{ KE_IGNORE, 0xe045, { KEY_NUMLOCK } },
> >  
> > +	/* Scroll lock and also going to tablet mode on portable devices */
> >  	{ KE_IGNORE, 0xe046, { KEY_SCROLLLOCK } },
> > +
> > +	/* Untested, going from tablet mode on portable devices */
> > +	/* { KE_IGNORE, 0xe047, { KEY_RESERVED } }, */
> > +
> >  	{ KE_IGNORE, 0xe0f7, { KEY_MUTE } },
> >  	{ KE_IGNORE, 0xe0f8, { KEY_VOLUMEDOWN } },
> >  	{ KE_IGNORE, 0xe0f9, { KEY_VOLUMEUP } },
> > 

-- 
Pali Rohár
pali.rohar@...il.com