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Date: Tue, 4 Apr 2017 23:40:02 +0000
From: Masaki Ota <masaki.ota@...alps.com>
To: Nikolaus Rath <Nikolaus@...h.org>
CC: linux-kernel <linux-kernel@...r.kernel.org>,
"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>
Subject: RE: [PATCH 1/2] Alps HID I2C T4 device support
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
>
> --
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