From: NeilBrown <neil@brown.name>
Date: Thu, 30 Jul 2015 00:11:24 +0000 (+1000)
Subject: twl4030_charger: add software controlled linear charging mode.
X-Git-Tag: omap-for-v4.3/fixes-merge-window~37^2~7
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7f4a633d21331155ee06c5ee44749ed35a3a3cc5;p=pandora-kernel.git

twl4030_charger: add software controlled linear charging mode.

Add a 'continuous' option for usb charging which enables
the "linear" charging mode of the twl4030.

Linear charging does a good job with not-so-reliable power sources.
Auto mode does not work well as it switches off when voltage drops
momentarily.  Care must be taken not to over-charge.

It was used with a bike hub dynamo since a year or so. In that case
there are automatically charging stops when the cyclist needs a break.

Original-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: NeilBrown <neil@brown.name>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
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