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Message-ID: <545A1343.4060002@ti.com> Date: Wed, 5 Nov 2014 17:38:35 +0530 From: Vignesh R <vigneshr@...com> To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>, "Griffis, Brad" <bgriffis@...com>, Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>, Mark Rutland <mark.rutland@....com>, Ian Campbell <ijc+devicetree@...lion.org.uk>, Kumar Gala <galak@...eaurora.org>, Benoit Cousson <bcousson@...libre.com>, Tony Lindgren <tony@...mide.com>, Russell King <linux@....linux.org.uk>, Jonathan Cameron <jic23@...nel.org>, Dmitry Torokhov <dmitry.torokhov@...il.com> CC: Hartmut Knaack <knaack.h@....de>, Lars-Peter Clausen <lars@...afoo.de>, Peter Meerwald <pmeerw@...erw.net>, Samuel Ortiz <sameo@...ux.intel.com>, Lee Jones <lee.jones@...aro.org>, "Balbi, Felipe" <balbi@...com>, Jan Kardell <jan.kardell@...liq.com>, Paul Gortmaker <paul.gortmaker@...driver.com>, "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>, "linux-input@...r.kernel.org" <linux-input@...r.kernel.org> Subject: Re: [PATCH 0/4] Touchscreen performance related fixes 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@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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