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From: Michael Welling <mwelling-EkmVulN54Sk@public.gmane.org>
To: dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	vigneshr-l0cyMroinI0@public.gmane.org,
	bgriffis-l0cyMroinI0@public.gmane.org,
	jic23-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org,
	balbi-l0cyMroinI0@public.gmane.org,
	linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: GWilson-+8BKOH/0X5NWk0Htik3J/w@public.gmane.org,
	linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: AM335x touchscreen issues
Date: Tue, 26 May 2015 13:11:57 -0500	[thread overview]
Message-ID: <20150526181157.GA8009@deathray> (raw)

Greetings,

I have been porting Linux to a new AM3554 based SoM and have found issues
with the touchscreen reporting touch releases repeatedly to userspace
without actually touching the screen when running ts_calibrate, ts_test
or other graphical touchscreen applications.

This started happening after updating pulling recent changes.

It has also been confirmed to be happening on the beagle bone black:
http://www.spinics.net/lists/linux-iio/msg18580.html

If you look further into this thread you will see a workaround patch that
I came up with:
http://www.spinics.net/lists/linux-iio/msg18583.html

Though this fix stops the reported events in userspace, interrupts are
still occuring repeatedly.

Does anyone have any suggestions beyond what I have done to remedy this
issue?

Regards,

Michael

WARNING: multiple messages have this Message-ID (diff)
From: Michael Welling <mwelling@ieee.org>
To: dmitry.torokhov@gmail.com, vigneshr@ti.com, bgriffis@ti.com,
	jic23@kernel.org, wsa@the-dreams.de, balbi@ti.com,
	linux-input@vger.kernel.org
Cc: GWilson@sakuraus.com, linux-iio@vger.kernel.org
Subject: AM335x touchscreen issues
Date: Tue, 26 May 2015 13:11:57 -0500	[thread overview]
Message-ID: <20150526181157.GA8009@deathray> (raw)

Greetings,

I have been porting Linux to a new AM3554 based SoM and have found issues
with the touchscreen reporting touch releases repeatedly to userspace
without actually touching the screen when running ts_calibrate, ts_test
or other graphical touchscreen applications.

This started happening after updating pulling recent changes.

It has also been confirmed to be happening on the beagle bone black:
http://www.spinics.net/lists/linux-iio/msg18580.html

If you look further into this thread you will see a workaround patch that
I came up with:
http://www.spinics.net/lists/linux-iio/msg18583.html

Though this fix stops the reported events in userspace, interrupts are
still occuring repeatedly.

Does anyone have any suggestions beyond what I have done to remedy this
issue?

Regards,

Michael

             reply	other threads:[~2015-05-26 18:11 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-26 18:11 Michael Welling [this message]
2015-05-26 18:11 ` AM335x touchscreen issues Michael Welling
2015-05-26 18:37 ` Felipe Balbi
2015-05-26 18:37   ` Felipe Balbi
     [not found]   ` <20150526183713.GU26599-HgARHv6XitJaoMGHk7MhZQC/G2K4zDHf@public.gmane.org>
2015-05-26 20:53     ` Michael Welling
2015-05-26 20:53       ` Michael Welling
2015-05-26 21:15       ` Cooper Jr., Franklin
2015-05-26 21:15         ` Cooper Jr., Franklin
     [not found]         ` <8F29D6B095ED194EA1980491A5E029710C89C445-CXzTdvP5/9qIQmiDNMet8wC/G2K4zDHf@public.gmane.org>
2015-05-26 21:28           ` Michael Welling
2015-05-26 21:28             ` Michael Welling
2015-05-26 21:34             ` Cooper Jr., Franklin
2015-05-26 21:34               ` Cooper Jr., Franklin
     [not found]               ` <8F29D6B095ED194EA1980491A5E029710C89C4E0-CXzTdvP5/9qIQmiDNMet8wC/G2K4zDHf@public.gmane.org>
2015-05-26 21:36                 ` Griffis, Brad
2015-05-26 21:36                   ` Griffis, Brad
     [not found]                   ` <912A29987EAE174BA6CF187D7CDFA9CE270A8C43-YmePFLaaepqIQmiDNMet8wC/G2K4zDHf@public.gmane.org>
2015-05-26 21:50                     ` Michael Welling
2015-05-26 21:50                       ` Michael Welling
2015-05-26 22:25                       ` Griffis, Brad
2015-05-26 22:25                         ` Griffis, Brad
     [not found]                         ` <912A29987EAE174BA6CF187D7CDFA9CE270A8D48-YmePFLaaepqIQmiDNMet8wC/G2K4zDHf@public.gmane.org>
2015-05-26 22:46                           ` Michael Welling
2015-05-26 22:46                             ` Michael Welling
2015-05-26 22:31                       ` Cooper Jr., Franklin
2015-05-26 22:31                         ` Cooper Jr., Franklin
     [not found]                         ` <8F29D6B095ED194EA1980491A5E029710C89C70D-CXzTdvP5/9qIQmiDNMet8wC/G2K4zDHf@public.gmane.org>
2015-05-26 23:06                           ` Michael Welling
2015-05-26 23:06                             ` Michael Welling
2015-05-26 23:37                             ` Cooper Jr., Franklin
2015-05-26 23:37                               ` Cooper Jr., Franklin
2015-05-27  4:06                             ` Vignesh R
2015-05-27  4:06                               ` Vignesh R
2015-05-27 17:29                               ` Michael Welling
2015-05-26 21:41               ` Michael Welling

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