linux-kernel - RE: [lm-sensors] [PATCH] adxl345 accelerometer hwmon driver

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Message-ID: <68FBE0F3CE97264395875AC1C468F22C152BFA@mail03.cyberswitching.local>
Date:	Wed, 1 Jul 2009 12:19:02 -0700
From:	"Chris Verges" <chrisv@...erswitching.com>
To:	"Jonathan Cameron" <jic23@....ac.uk>
Cc:	<linux-kernel@...r.kernel.org>, <lm-sensors@...sensors.org>
Subject: RE: [lm-sensors] [PATCH] adxl345 accelerometer hwmon driver

Hi Jonathan,

Thanks for the response!

> Just for reference this chip is definitely on my list of ones to
support
> via the Industrial I/O (iio) framework, I just haven't managed to get
hold
> of one as yet!

If you need a sample set, let me know off the mailing list.  I may be
able
to ship a couple to you ... need to check our available stock.  I think
ours are BGAs, in case you have the intention of soldering by hand.  :-)

> What are you actually doing with it?  If you aren't doing hardware
> monitoring then I would expect you aren't going to receive a
favourable
> response on here.

The ADXL345 is a 3D accelerometer.  It's very similar to the following
chips already in the HWMON section of the kernel:

   - SENSORS_LIS3LV02D
   - SENSORS_APPLESMC

The driver provides 3D axis data when the user polls the chip via the
sysfs
interface.

The ADXL345 has the additional capability of being a "tap-touch"
detector --
almost like an input device, if you will -- but this driver doesn't
expose
that functionality.  Maybe in the future.

> I'll take a look at the actual code tomorrow.  Always good to see
another
> accelerometer driver.

Thanks!  Looking forward to the feedback.

Chris
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