Thread (12 messages) 12 messages, 6 authors, 2015-03-20

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

From: Martin Kepplinger <hidden>
Date: 2015-03-20 11:42:47
Also in: linux-api, linux-devicetree, lkml

Am 2015-03-19 um 11:22 schrieb Bastien Nocera:
On Wed, 2015-03-18 at 19:28 +0100, Martin Kepplinger wrote:
quoted
Am 2015-03-18 um 19:05 schrieb Bastien Nocera:
quoted
On Wed, 2015-03-18 at 19:02 +0100, Martin Kepplinger wrote:
quoted
Am 2015-03-18 um 17:59 schrieb Bastien Nocera:
quoted
On Wed, 2015-03-18 at 17:42 +0100, Martin Kepplinger wrote:
quoted
<snip>
quoted
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!
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