From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?iso-8859-1?q?J=FCrgen_Beisert?= Subject: Re: [PATCH 6/9] Staging/iio/adc/touchscreen/MXS: add interrupt driven touch detection Date: Tue, 1 Oct 2013 11:28:38 +0200 Message-ID: <201310011128.38928.jbe@pengutronix.de> References: <1379946998-23041-1-git-send-email-jbe@pengutronix.de> <1379946998-23041-7-git-send-email-jbe@pengutronix.de> Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1379946998-23041-7-git-send-email-jbe-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org> Content-Disposition: inline Sender: linux-iio-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Jonathan Cameron Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b@public.gmane.org, marex-ynQEQJNshbs@public.gmane.org, fabio.estevam-KZfg59tc24xl57MIdRCFDg@public.gmane.org, Dmitry Torokhov , jic23-KWPb1pKIrIJaa/9Udqfwiw@public.gmane.org, linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-input@vger.kernel.org Hi Jonathan, On Tuesday 01 October 2013 11:25:46 Jonathan Cameron wrote: > a couple of the patch descriptions say that they are untested on i.MX= 28. On Monday 23 September 2013 16:36:35 Juergen Beisert wrote: > For battery driven systems it is a very bad idea to collect the touch= screen > data within a kernel busy loop. > > This change uses the features of the hardware to delay and accumulate > samples in hardware to avoid a high interrupt and CPU load. > > Note: this is only tested on an i.MX23 SoC yet. This note is no longer true. Marek tested it on his M28EVK, Lothar on h= is TX28=20 and myself also on an i.MX28EVK. =46or the IIO part of the driver I tested on my i.MX23 based ChumbyOne = and some=20 customer hardware and it seems still to work (I can only guess if the v= alues I=20 read from the sysfs entries are correct, sorry). Regards, Juergen --=20 Pengutronix e.K. =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0= =A0| Juergen Beisert =A0 =A0 =A0 =A0 =A0 =A0 | Linux Solutions for Science and Industry =A0 =A0 =A0| http://www.pengut= ronix.de/ |