hp accelerometer: add freefall detection

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This adds freefall handling to hp_accel driver.  According to HP, it
should just work, without us having to set the chip up by hand.

hpfall.c is example .c program that parks the disk when accelerometer
detects free fall.  It should work; for now, it uses fixed 20seconds
protection period.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Cc: Thomas Renninger <trenn@suse.de>
Cc: Éric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

...

This commit is contained in:

Pavel Machek 2009-02-18 14:48:23 -08:00 • committed by Linus Torvalds

parent 3a5093ee67

commit ef2cfc790b

5 changed files with 296 additions and 17 deletions

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101

Documentation/hwmon/hpfall.c

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8

Documentation/hwmon/lis3lv02d

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