linux-kernel - Re: [PATCH 1/2] Alps HID I2C T4 device support

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Date:   Tue, 04 Apr 2017 16:42:40 -0700
From:   Nikolaus Rath <Nikolaus@...h.org>
To:     Masaki Ota <masaki.ota@...alps.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        "linux-input\@vger.kernel.org" <linux-input@...r.kernel.org>
Subject: Re: [PATCH 1/2] Alps HID I2C T4 device support

Hi Masaki,

Yes, without your patch the touchpad is mostly working - I just can't
configure it.

Please take a look at https://bugs.freedesktop.org/show_bug.cgi?id=100345.

Best,
-Nikolaus

On Apr 04 2017, Masaki Ota <masaki.ota@...alps.com> wrote:
> Hi, Nikolaus,
>
> There is no 044E:120C device, but it looks like Alps Touchpad is detected as PS/2 Touchpad.
>
> Actually, this Touchpad has two interfaces. One is I2C, the other is PS/2.
> Default setting is I2C, and if the system does not support I2C, Touchpad works as PS/2.
>
> However, both of interface should work properly on Linux.
> I tested it on Ubuntu +4.10 kernel.
>
> If you don't apply my patch, does device work as I2C? (044E:120C appears?)
>
> Best Regards,
> Masaki Ota
> -----Original Message-----
> From: Nikolaus Rath [mailto:Nikolaus@...h.org] 
> Sent: Wednesday, April 05, 2017 2:09 AM
> To: 太田 真喜 Masaki Ota <masaki.ota@...alps.com>
> Cc: linux-kernel <linux-kernel@...r.kernel.org>; linux-input@...r.kernel.org
> Subject: Re: [PATCH 1/2] Alps HID I2C T4 device support
>
> Hi Masaki,
>
> Yes, I think I have a 044E:120C. Is there a way to find out for sure?
> It's not listed by e.g. lspci.
>
> The touchpad is definitely not reacting to anything. evemu-record does not show any events either.
>
> I have attached the dmesg output.
>
> Best,
> -Nikolaus
>
>
> On Apr 04 2017, Masaki Ota <masaki.ota@...alps.com> wrote:
>> Hi, Nikolaus,
>>
>> Your Touchpad is 044E:120C, right?
>>
>> PATCH 1/2 supports 044E:120C Touchpad device.
>> I think you can use all features of this Touchpad.
>>
>> PATCH 2/2 supports 044E:1215 Touchpad device.
>> You don't need to care about this.
>>
>> If Touchpad does not work completely, there is something an error.
>> What does dmesg show?
>>
>> Best Regards,
>> Masaki Ota
>> -----Original Message-----
>> From: Nikolaus Rath [mailto:Nikolaus@...h.org]
>> Sent: Tuesday, April 04, 2017 12:09 PM
>> To: 太田 真喜 Masaki Ota <masaki.ota@...alps.com>; linux-kernel 
>> <linux-kernel@...r.kernel.org>; linux-input@...r.kernel.org
>> Subject: Re: [PATCH 1/2] Alps HID I2C T4 device support
>>
>> Hi Ota,
>>
>>> -Support Alps HID I2C T4 Touchpad device.
>>> -Laptop names that use this Touchpad:HP Zbook Studio, Elitebook Folio 
>>> G1, Elitebook 1030 G1, Elitebook 1040 G3
>>>
>>> Signed-off-by: Masaki Ota <masaki.ota@...xxxxxxxx>
>>> ---
>>>  drivers/hid/hid-alps.c | 500 +++++++++++++++++++++++++++++++++++++++----------
>>>  drivers/hid/hid-core.c |   3 +-
>>>  drivers/hid/hid-ids.h  |   1 +
>>>  3 files changed, 403 insertions(+), 101 deletions(-)
>>  
>> I tried your patch on an HP Elitebook, but with rather limited
>> success. Before, I was able to use the touchpad in limited fashion
>> (https://bugs.freedesktop.org/show_bug.cgi?id=100345). With your
>> patch (applied on top of 4.10), the touchpad no longer reacts at
>> all.
>>
>> That said, I didn't find a patch 2/2 anywhere.. is there something missing?
>>
>> Thanks,
>> -Nikolaus
>>
>> --
>> GPG Fingerprint: ED31 791B 2C5C 1613 AF38 8B8A D113 FCAC 3C4E 599F
>>
>>              »Time flies like an arrow, fruit flies like a Banana.«
>
>
> --
> GPG Fingerprint: ED31 791B 2C5C 1613 AF38 8B8A D113 FCAC 3C4E 599F
>
>              »Time flies like an arrow, fruit flies like a Banana.«


-- 
GPG Fingerprint: ED31 791B 2C5C 1613 AF38 8B8A D113 FCAC 3C4E 599F

             »Time flies like an arrow, fruit flies like a Banana.«