From: "Pali Rohár" <pali.rohar@gmail.com>
To: Ben Gamari <ben@smart-cactus.org>
Cc: Allen_Hung@Dell.com, Mario_Limonciello@Dell.com,
linux-input@vger.kernel.org
Subject: Re: Dell Latitude E7470 touchpad status
Date: Tue, 17 May 2016 10:23:09 +0200 [thread overview]
Message-ID: <20160517082309.GZ29844@pali> (raw)
In-Reply-To: <87bn45gr0e.fsf@smart-cactus.org>
On Tuesday 17 May 2016 08:03:45 Ben Gamari wrote:
> Allen_Hung@Dell.com writes:
>
> > Dell - Internal Use - Confidential
> > Hi Ben,
> >
> > We have just confirmed the touchpad on Latitude E7470 is a PS/2
> > device, not an I2C-HID input device. The code you listed is common
> > among many Dell products and the value of SDS0 should be provided
> > somewhere (I can't find it out) to specify a PS/2 device.
> >
> Thanks Allen,
>
> I rather suspected this; I suppose it's probably hard to find I2C-HID
> hardware that integrates a touchstick. This explains why SDS0 is 0 on my
> hardware.
>
> In this case I suppose this is yet another Alps device? I've tried
> bringing it up with all of the recent Alps protocols supported by the
> alps.ko driver but sadly nothing seems to emit multitouch events, so
> it seems likely that there is yet another protocol variant waiting to be
> implemented. Is there any chance you could see whether Alps might now be
> more willing to provide protocol documentation? If not, perhaps there's
> a Linux binary driver available?
>
> Cheers,
>
> - Ben
Hi Ben!
Maybe it could help you, look at my email sent to linux-input ML year
ago: http://thread.gmane.org/gmane.linux.kernel.input/41210
Also try to look at dell drivers page, there could be linux package for
your laptop with drivers. Lot of them used to be in dkms format
(upstream source code with dell changes).
ALPS code from Dell were open source, it was just hard to find it and
compile it on other then one kernel version. And harder to generate
patch (like I did in above email)...
If you need help with ALPS touchpad, I could try to help.
--
Pali Rohár
pali.rohar@gmail.com
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next prev parent reply other threads:[~2016-05-17 8:23 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-03 13:31 Dell Latitude E7470 touchpad status Ben Gamari
[not found] ` <23E0F704395E694FA4710C833FA087E50D40B8BF13@TPEX7ADC101.APAC.DELL.COM>
2016-05-17 6:03 ` Ben Gamari
2016-05-17 8:23 ` Pali Rohár [this message]
2016-05-17 9:50 ` Ben Gamari
2016-05-17 13:16 ` Pali Rohár
2016-05-17 14:46 ` Allen_Hung
2016-05-17 15:22 ` Pali Rohár
2016-05-25 4:38 ` Allen_Hung
2016-05-25 7:39 ` Pali Rohár
2016-05-25 12:09 ` Ben Gamari
2016-05-25 14:45 ` Pali Rohár
2016-05-25 15:19 ` Hans de Goede
2016-05-25 15:32 ` Pali Rohár
2016-05-25 12:32 ` Ben Gamari
2016-05-25 15:43 ` Pali Rohár
2016-05-25 15:47 ` Hans de Goede
2016-05-25 15:53 ` Ben Gamari
2016-05-25 16:01 ` Packet format for ALPS V8 trackstick (Was: Re: Dell Latitude E7470 touchpad status) Pali Rohár
2016-05-26 8:55 ` [PATCH] Alps SS4 V2 support for Dell Latitude 7470 Ben Gamari
2016-05-26 8:55 ` [PATCH 1/3] input/alps: Split up ALPS_BUTTONPAD behavior change Ben Gamari
2016-05-26 8:55 ` [PATCH 2/3] input/alps: Add touchstick support for V8 protocol devices Ben Gamari
2016-05-26 8:55 ` [PATCH 3/3] input/alps: Add device description for Dell Latitude E7470 Ben Gamari
2016-05-26 9:05 ` Pali Rohár
2016-05-26 12:19 ` Hans de Goede
2016-05-26 12:35 ` Pali Rohár
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