linux-kernel - Re: [PATCH] intel-hid: fix volume buttons on Thinkpad X12 Detachable Tablet Gen 1

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Message-ID: <87f0e7ba-a02d-81a4-9479-42c8c9c365ca@linux.intel.com>
Date: Tue, 12 Nov 2024 12:27:08 +0200 (EET)
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Hans de Goede <hdegoede@...hat.com>
cc: Cole Stowell <cole@...well.pro>, platform-driver-x86@...r.kernel.org, 
    LKML <linux-kernel@...r.kernel.org>, alexhung@...il.com, 
    Mary Strodl <mstrodl@....rit.edu>
Subject: Re: [PATCH] intel-hid: fix volume buttons on Thinkpad X12 Detachable
 Tablet Gen 1

On Thu, 7 Nov 2024, Hans de Goede wrote:

> Hi,
> 
> Thank you for the patch.
> 
> On 7-Nov-24 9:59 PM, Cole Stowell wrote:
> > Volume buttons on Lenovo Thinkpad X12 Detachable Tablet Gen 1 did not
> > send any input events when pressed. When loading intel-hid with the 5
> > Button Array explicitly enabled, the buttons functioned normally.
> > 
> > Adds the X12 Detachable Tablet Gen 1 to the `button_array_table`.
> > 
> > However, the driver is unable to call INTEL_HID_DSM_BTNE_FN and prints
> > the warning "failed to set button capability" when attempting to enable
> > or disable the 5 Button Array. I'm not sure if this is normal,
> > but the warning seems harmless.
> 
> Yes the warning should be harmless and adding more special handling
> is not worth it IMHO.
> 
> Patch looks good to me:
> 
> Reviewed-by: Hans de Goede <hdegoede@...hat.com>

Hi,

I've applied this into review-ilpo branch but edited the commit message 
slightly by using the text from Hans' reply.

-- 
 i.

> > Co-developed-by: Mary Strodl <mstrodl@....rit.edu>
> > Signed-off-by: Mary Strodl <mstrodl@....rit.edu>
> > Signed-off-by: Cole Stowell <cole@...well.pro>
> > ---
> >  drivers/platform/x86/intel/hid.c | 7 +++++++
> >  1 file changed, 7 insertions(+)
> > 
> > diff --git a/drivers/platform/x86/intel/hid.c b/drivers/platform/x86/intel/hid.c
> > index 445e7a59beb4..48ad75a56199 100644
> > --- a/drivers/platform/x86/intel/hid.c
> > +++ b/drivers/platform/x86/intel/hid.c
> > @@ -118,6 +118,13 @@ static const s
> > truct dmi_system_id button_array_table[] = {
> >  			DMI_MATCH(DMI_PRODUCT_NAME, "HP Spectre x2 Detachable"),
> >  		},
> >  	},
> > +	{
> > +		.ident = "Lenovo ThinkPad X1 Tablet Gen 1",
> > +		.matches = {
> > +			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> > +			DMI_MATCH(DMI_PRODUCT_FAMILY, "ThinkPad X12 Detachable Gen 1"),
> > +		},
> > +	},
> >  	{
> >  		.ident = "Lenovo ThinkPad X1 Tablet Gen 2",
> >  		.matches = {
>