From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751830AbbCTLmr (ORCPT ); Fri, 20 Mar 2015 07:42:47 -0400 Received: from vegas.theobroma-systems.com ([144.76.126.164]:44111 "EHLO mail.theobroma-systems.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751523AbbCTLmo (ORCPT ); Fri, 20 Mar 2015 07:42:44 -0400 Message-ID: <550C03FC.1020303@theobroma-systems.com> Date: Fri, 20 Mar 2015 12:26:52 +0100 From: Martin Kepplinger User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.5.0 MIME-Version: 1.0 To: Bastien Nocera , Martin Kepplinger CC: Alexander Stein , robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, dmitry.torokhov@gmail.com, akpm@linux-foundation.org, gregkh@linuxfoundation.org, linux-api@vger.kernel.org, devicetree@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Christoph Muellner Subject: Re: [PATCH v2] add support for Freescale's MMA8653FC 10 bit accelerometer References: <1426694157-10866-1-git-send-email-martink@posteo.de> <2231139.ojeyer6qnI@ws-stein> <5509AAE5.1000503@posteo.de> <1426697978.6764.8.camel@hadess.net> <5509BDA0.9000806@posteo.de> <1426701934.6764.10.camel@hadess.net> <5509C3E6.8070000@posteo.de> <1426760577.6764.14.camel@hadess.net> In-Reply-To: <1426760577.6764.14.camel@hadess.net> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 2015-03-19 um 11:22 schrieb Bastien Nocera: > On Wed, 2015-03-18 at 19:28 +0100, Martin Kepplinger wrote: >> Am 2015-03-18 um 19:05 schrieb Bastien Nocera: >>> On Wed, 2015-03-18 at 19:02 +0100, Martin Kepplinger wrote: >>>> Am 2015-03-18 um 17:59 schrieb Bastien Nocera: >>>>> On Wed, 2015-03-18 at 17:42 +0100, Martin Kepplinger wrote: >>>>>> >>>>> >>>>>> It could have gone to drivers/iio/accel if it would use an >>>>>> iio interface, which would make more sense, you are right, >>>>>> but I >>>>>> simply don't have the time to merge it in to iio. >>>>>> >>>>>> It doesn't use an input interface either but I don't see a >>>>>> good place for an accelerometer that uses sysfs only. >>>>>> >>>>>> It works well, is a relatively recent chip and a clean >>>>>> dirver. But this is all I can provide. >>>>> >>>>> As a person who works on the user-space interaction of those >>>>> with desktops [1]: Urgh. >>>>> >>>>> I already have 3 (probably 4) types of accelerometers to >>>>> contend with, I'm not fond of adding yet another type. >>>>> >>>>> Is there any way to get this hardware working outside the SoCs >>>>> it's designed for (say, a device with I2C like a Raspberry >>>>> Pi), so that a kind soul could handle getting this using the >>>>> right interfaces? >>>>> >>>> >>>> It works on basically any SoC and is in no way limited in this >>>> regard. Sure, userspace has to expicitely support it and I hear >>>> you. Using the iio interface would make more sense. I can only >>>> say I'd love to have the time to move this driver over. I'm >>>> very sorry. >>> >>> How can we get the hardware for somebody to use on their own >>> laptops/embedded boards to implement this driver? >>> >> >> It's connected over I2C. If the included documentation is not clear >> please tell me what exacly. Thanks! > > > I'll ask the question a different way: can you please give the address > of a shop where that hardware is available? > there is http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=RDMMA865x&lang_cd= and http://linux-sunxi.org/Inet_K970 for example. I think I saw Android devices with it too, and I would guess it would be used more often if it were in linux. Please refer to v4 of the patch for different questions. thanks!