From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felipe Balbi Subject: Re: AM335x touchscreen issues Date: Tue, 26 May 2015 13:37:13 -0500 Message-ID: <20150526183713.GU26599@saruman.tx.rr.com> References: <20150526181157.GA8009@deathray> Reply-To: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="HzaOE8X7KzPzAQEl" Return-path: Content-Disposition: inline In-Reply-To: <20150526181157.GA8009@deathray> Sender: linux-iio-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Michael Welling , "Franklin Cooper Jr." Cc: 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, GWilson-+8BKOH/0X5NWk0Htik3J/w@public.gmane.org, linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-input@vger.kernel.org --HzaOE8X7KzPzAQEl Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, On Tue, May 26, 2015 at 01:11:57PM -0500, Michael Welling wrote: > Greetings, >=20 > 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. >=20 > This started happening after updating pulling recent changes. Can you bisect and find the offending commit ? Which recent changes are you talking about ? > It has also been confirmed to be happening on the beagle bone black: > http://www.spinics.net/lists/linux-iio/msg18580.html >=20 > 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 >=20 > Though this fix stops the reported events in userspace, interrupts are > still occuring repeatedly. >=20 > Does anyone have any suggestions beyond what I have done to remedy this > issue? yeah, it sounds similar to what Franklin has been working on. Franklin, any comments ? --=20 balbi --HzaOE8X7KzPzAQEl Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJVZL1ZAAoJEIaOsuA1yqREpzMP/jf4N28wlJZZnumBt1h24BSr aXluQr8polMMXV15xi1oyNvPi8ZyCC2CLaIw2N2EsHqCWVkGq9e3qTwxkKZKFnqi JC355NoddOCz/Mggif02zIOCfG+7eMzor+A1Tw1PP4RO0nydLmjZqzxAtdeQuauT woO2PHjZZbjEzMoPHKadzG0Yu/2kiMt56Owq7venmFvl30zv89S7PjAnmeVaITak Ga/o3dEECiOpkHM6Y//R0qG0V+sIPRpitvJSPN7XKjQkQ6gPFcqHzW9nvkk6H8aV Z1HYHBPAI4FJSVk8WoSNO2sPn+DRK1VgqfMNx/dQ1NnBFV08FSkX9xmx8K93ojle Te/LqigCFdMFB2UvLqOKqTUZdRka2BDiOqAfK+T7/ULJ60zHNOKuoz19uCp6OzUg aVB6YvG41Dcm9pbQQKtUnNFnLS3Qz3aG1Ottl8RwKVmmuZJI6Evdo7LjMUVCMdoB uBFqhyNxshrUbR5hM2W3vzU6buFO+xoh/DWGY0Ljk+XRY9zBHa41btgy2G3s3psh P11IHmnJizxw6D8oLV1rfh9+VlTI2m6KUGRQw05PZKsV3AGqpjH72GzA2Wqu7gKy NR/1XEL6zXWH/lJftQ9QC0mwH09K+5nAEudZBVnvtkSNqZGWN5nj7nQ6Zqp2723g Lpg/4q8yWAdOnYh8E643 =/YPt -----END PGP SIGNATURE----- --HzaOE8X7KzPzAQEl--