linux-kernel - Re: [PATCH v2] add support for Freescale's MMA8653FC 10 bit accelerometer

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Message-ID: <5509C3E6.8070000@posteo.de>
Date:	Wed, 18 Mar 2015 19:28:54 +0100
From:	Martin Kepplinger <martink@...teo.de>
To:	Bastien Nocera <hadess@...ess.net>
CC:	Alexander Stein <alexander.stein@...tec-electronic.com>,
	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	dmitry.torokhov@...il.com, akpm@...ux-foundation.org,
	gregkh@...uxfoundation.org, linux-api@...r.kernel.org,
	devicetree@...r.kernel.org, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Martin Kepplinger <martin.kepplinger@...obroma-systems.com>,
	Christoph Muellner <christoph.muellner@...obroma-systems.com>
Subject: Re: [PATCH v2] add support for Freescale's MMA8653FC 10 bit accelerometer

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:
>>>>
>>> <snip>
>>>> 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!
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