* Now every linefeed control command which is not RING'ing
powers-down the SLIC. This reduce audible noise when
several channels are ringing.
* Simplify code by removing redundant calls to do_chan_power()
before linefeed_control()
* Manage vbat_h state so we skip do_chan_power() calls when
there isn't a state change
* Export vbat_h state to /proc/.../fxs_info
Signed-off-by: Oron Peled <oron.peled@xorcom.com>
Acked-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Origin: http://svnview.digium.com/svn/dahdi?view=rev&rev=10478
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/branches/2.5@10488 a0bf4364-ded3-4de4-8d8a-66a801d63aff