From: Rhyland Klein <rklein@nvidia.com>
Date: Tue, 24 May 2011 19:05:59 +0000 (-0700)
Subject: bq20z75: Add support for external notification
X-Git-Tag: v3.1-rc1~106^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=58ddafae2d7102d8f493840cb7aca0b4b2326b2a;p=pandora-kernel.git

bq20z75: Add support for external notification

Adding support for external power change notification. One problem found
is that there is a lag time before the sensor will return a new status.
To ensure that we only fire off the power_supply_changed event when the
status returned from the sensor is actually different, we delay sending
the the notification, and instead poll on it looking for a change. The
amount of time to poll is configurable via platform data.

Signed-off-by: Rhyland Klein <rklein@nvidia.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
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