linux-kernel - RE: [PATCH] platform/x86: dell-laptop: Add 2-in-1 devices to the DMI whitelist

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Message-ID: <d72f1065c98d4073b3f112cf8538f508@ausx13mpc120.AMER.DELL.COM>
Date:   Fri, 26 Jan 2018 14:42:19 +0000
From:   <Mario.Limonciello@...l.com>
To:     <pali.rohar@...il.com>, <dvhart@...radead.org>
CC:     <alexander.n.abrosimov@...il.com>, <mjg59@...f.ucam.org>,
        <andy@...radead.org>, <platform-driver-x86@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] platform/x86: dell-laptop: Add 2-in-1 devices to the DMI
 whitelist

> -----Original Message-----
> From: Pali Rohár [mailto:pali.rohar@...il.com]
> Sent: Thursday, January 25, 2018 5:06 PM
> To: Darren Hart <dvhart@...radead.org>
> Cc: Alexander Abrosimov <alexander.n.abrosimov@...il.com>; Matthew Garrett
> <mjg59@...f.ucam.org>; Limonciello, Mario <Mario_Limonciello@...l.com>; Andy
> Shevchenko <andy@...radead.org>; platform-driver-x86@...r.kernel.org; linux-
> kernel@...r.kernel.org
> Subject: Re: [PATCH] platform/x86: dell-laptop: Add 2-in-1 devices to the DMI
> whitelist
> 
> On Thursday 25 January 2018 15:02:39 Darren Hart wrote:
> > On Fri, Jan 26, 2018 at 01:48:57AM +0300, Alexander Abrosimov wrote:
> > > SMBIOS 3.0.0 Specification introduced new Chassis Types field values for
> > > 2-in-1 devices like tablets, convertibles and detachables. Dell's
> > > Inspiron 2-in-1 and XPS 2-in-1 fall into this category and they have to
> > > be added to the DMI whitelist, so rfkill and backlight can be controlled
> > > for them as for other laptops.
> > >
> > > Signed-off-by: Alexander Abrosimov <alexander.n.abrosimov@...il.com>
> >
> > Thanks Alexander. Looks good - just going to give Pali and +Mario a chance to
> > respond before merging...
> 
> I have no comments for this. This should be confirmed by Mario or
> somebody else from Dell, which DMI names are used for a new products.

Yes these chassis types from SMBIOS 3.0 are covered by Dell specs and used for 
some products.

This patch looks good to me.

Reviewed-by: Mario Limonciello <mario.limonciello@...l.com>
> 
> > > ---
> > >  drivers/platform/x86/dell-laptop.c | 18 ++++++++++++++++++
> > >  1 file changed, 18 insertions(+)
> > >
> > > diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-
> laptop.c
> > > index cd4725e7e0b5..23fc94d70ea1 100644
> > > --- a/drivers/platform/x86/dell-laptop.c
> > > +++ b/drivers/platform/x86/dell-laptop.c
> > > @@ -110,6 +110,24 @@ static const struct dmi_system_id dell_device_table[]
> __initconst = {
> > >  		},
> > >  	},
> > >  	{
> > > +		.matches = {
> > > +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> > > +			DMI_MATCH(DMI_CHASSIS_TYPE, "30"), /*Tablet*/
> > > +		},
> > > +	},
> > > +	{
> > > +		.matches = {
> > > +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> > > +			DMI_MATCH(DMI_CHASSIS_TYPE, "31"), /*Convertible*/
> > > +		},
> > > +	},
> > > +	{
> > > +		.matches = {
> > > +			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> > > +			DMI_MATCH(DMI_CHASSIS_TYPE, "32"), /*Detachable*/
> > > +		},
> > > +	},
> > > +	{
> > >  		.ident = "Dell Computer Corporation",
> > >  		.matches = {
> > >  			DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer
> Corporation"),
> > > --
> > > 2.13.6
> > >
> > >
> >
> 
> --
> Pali Rohár
> pali.rohar@...il.com