From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vignesh R Subject: Re: [PATCH 0/4] Touchscreen performance related fixes Date: Wed, 5 Nov 2014 17:38:35 +0530 Message-ID: <545A1343.4060002@ti.com> References: <1414408111-2631-1-git-send-email-vigneshr@ti.com> <544E821D.5040004@linutronix.de> <912A29987EAE174BA6CF187D7CDFA9CE26F46B2B@DLEE08.ent.ti.com> <54577258.9080508@linutronix.de> <5458BC0B.1040803@ti.com> <5458C87F.80409@linutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <5458C87F.80409-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org> Sender: linux-iio-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Sebastian Andrzej Siewior , "Griffis, Brad" , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Benoit Cousson , Tony Lindgren , Russell King , Jonathan Cameron , Dmitry Torokhov Cc: Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald , Samuel Ortiz , Lee Jones , "Balbi, Felipe" , Jan Kardell , Paul Gortmaker , "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" , "linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-input@vger.kernel.org On Tuesday 04 November 2014 06:07 PM, Sebastian Andrzej Siewior wrote: > On 11/04/2014 12:44 PM, Vignesh R wrote: > >> I ran following commands >> $ evtest /dev/input/touchscreen0 & >> (with heavy item on touchscreen) >> and >> $ cat /sys/bus/iio/devices/iio\:device0/scan_elements/in_voltage4_en >> (in a busy loop) >> I tried above experiment on my board but I didn't hit any problem even >> after running for close to 30 minutes. I was unable to reproduce failure > > Just to make sure: You had the touchscreen and iio command running in > parallel and you saw evtest output while there was iio operation? > Yeah.. I see both evtest and IIO outputs. Touch events are received consistently (decent samples per second) and atleast one IIO output per second. Here is a part from console log --------------------------- 928 Event: time 1413204484.240114, type 3 (Absolute), code 0 (X), value 1746 Event: time 1413204484.240114, type 3 (Absolute), code 1 (Y), value 1720 Event: time 1413204484.240114, type 3 (Absolute), code 24 (Pressure), value 99 Event: time 1413204484.240114, -------------- Report Sync ------------ Event: time 1413204484.255318, type 1 (Key), code 330 (Touch), value 0 Event: time 1413204484.255318, type 3 (Absolute), code 24 (Pressure), value 0 Event: time 1413204484.255318, -------------- Report Sync ------------ 933 Event: time 1413204484.273599, type 3 (Absolute), code 1 (Y), value 1718 Event: time 1413204484.273599, type 3 (Absolute), code 24 (Pressure), value 99 Event: time 1413204484.273599, type 1 (Key), code 330 (Touch), value 1 Event: time 1413204484.273599, -------------- Report Sync ------------ Event: time 1413204484.290195, type 3 (Absolute), code 24 (Pressure), value 98 Event: time 1413204484.290195, -------------- Report Sync ------------ Event: time 1413204484.306783, type 3 (Absolute), code 1 (Y), value 1719 Event: time 1413204484.306783, -------------- Report Sync ------------ 946 Event: time 1413204484.322164, type 1 (Key), code 330 (Touch), value 0 Event: time 1413204484.322164, type 3 (Absolute), code 24 (Pressure), value 0 Event: time 1413204484.322164, -------------- Report Sync ------------ Event: time 1413204484.340435, type 3 (Absolute), code 1 (Y), value 1721 Event: time 1413204484.340435, type 3 (Absolute), code 24 (Pressure), value 98 Event: time 1413204484.340435, type 1 (Key), code 330 (Touch), value 1 Event: time 1413204484.340435, -------------- Report Sync ------------ Event: time 1413204484.357025, type 3 (Absolute), code 0 (X), value 1745 Event: time 1413204484.357025, type 3 (Absolute), code 24 (Pressure), value 97 Event: time 1413204484.357025, -------------- Report Sync ------------ Event: time 1413204484.373621, type 3 (Absolute), code 0 (X), value 1746 Event: time 1413204484.373621, type 3 (Absolute), code 1 (Y), value 1720 Event: time 1413204484.373621, -------------- Report Sync ------------ 942 --------------------------- The numbers 928, 933 etc are from oneshot ADC read. The above output is pretty consistent over time. >> The problem may be in configuring correct charge-delay value. Please run: >> $ ts_test > /dev/null >> and let me know if pen events are being detected properly. > > Well I get the touch events but not while busy loop on iio interface is > running (I get maybe one event every 5 seconds or so). > After all, it is the same HW you have. Yeah.. I believe HW is same. I am using rev 1.5B with omap2plus_defconfig (+ TSC/ADC enabled) Regards Vignesh > > Sebastian > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >