From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Mon, 10 Mar 2014 21:07:40 +0000 (-0700)
Subject: staging: comedi: c6xdigio: add readback of last pwm channel values
X-Git-Tag: v3.15-rc1~139^2~252
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8d9c93b4481f03a4f7658b97d6dc8996470a71e5;p=pandora-kernel.git

staging: comedi: c6xdigio: add readback of last pwm channel values

Add and (*insn_read) for the PWM subdevice to allow reading back the
last value written to the channels.

There are only 2 PWM channels and they have a maxdata of 500. Pack
the last values in the subdevice 'state' instead of adding a private
data struct to this driver.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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