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[PATCHv2 0/3] iio: mma8452: cleanup and freefall mode

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This is v2 of cleanup and freefall detection for mma8452 devices.

[PATCH 1/3] iio: mma8452: remove unused register description
[PATCH 2/3] iio: mma8452: use enum for channel index
[PATCH 3/3] iio: mma8452: add freefall detection for Freescale's

If freefall mode (x&y&z falling event) is enabled, changes to individual
(rising) axis events have no effect, keeping the state consistent to
what values the user reads.

Other combinations (x&y, y&z, x&z) could be added later. x&y&z is
by far the most useful one for freefall detection.

Of course this doesn't change anything for existing users.

revision history
----------------
v2: freefall channel idx -1, seperate enum patch, cleanup and fixes
    thanks to Jonathan's review.

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[PATCHv2 0/3] iio: mma8452: cleanup and freefall mode Martin Kepplinger <martink@posteo.de> - 2015-12-15 17:50 +0100
  [PATCH 1/3] iio: mma8452: remove unused register description Martin Kepplinger <martink@posteo.de> - 2015-12-15 17:50 +0100
    Re: [PATCH 1/3] iio: mma8452: remove unused register description Jonathan Cameron <jic23@kernel.org> - 2015-12-19 17:50 +0100
  [PATCH 2/3] iio: mma8452: use enum for channel index Martin Kepplinger <martink@posteo.de> - 2015-12-15 17:50 +0100
    Re: [PATCH 2/3] iio: mma8452: use enum for channel index Jonathan Cameron <jic23@kernel.org> - 2015-12-19 17:50 +0100

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