linux-kernel - Re: [BUG] i2c-hid: ELAN Touchpad does not work on ASUS X580GD

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Date:   Fri, 18 May 2018 16:15:37 +0300
From:   Jarkko Nikula <jarkko.nikula@...ux.intel.com>
To:     Hans de Goede <hdegoede@...hat.com>, Chris Chiu <chiu@...lessm.com>
Cc:     Daniel Drake <drake@...lessm.com>,
        Jian-Hong Pan <jian-hong@...lessm.com>,
        Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Jani Nikula <jani.nikula@...el.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Adrian Salido <salidoa@...gle.com>,
        Jason Gerecke <killertofu@...il.com>,
        linux-input <linux-input@...r.kernel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Wolfram Sang <wsa@...-dreams.de>, linux-i2c@...r.kernel.org,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        Linux Upstreaming Team <linux@...lessm.com>
Subject: Re: [BUG] i2c-hid: ELAN Touchpad does not work on ASUS X580GD

On 05/18/2018 10:48 AM, Hans de Goede wrote:
> Could it be the i2c input clock definition in drivers/mfd/intel-lpss-pci.c
> is also wrong for Apollo Lake (N3450) ?  There are lots of people having
> various issues with i2c attached touchpads on Apollo Lake devices, this 
> bug:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1728244
> 
> Is sort of a collection bug for these. Various models laptops, lots of
> reporters. Note not sure thie is an i2c-designware issue, but it would
> be good to double check the input clock on Apollo Lake.
> 
Does i2c_designware_core.dyndbg=+p and i2c-hid.debug=1 command line 
arguments give any useful debug information from those machines?

-- 
Jarkko