From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Tue, 11 Nov 2014 23:55:19 +0000 (-0700)
Subject: staging: comedi: dmm32at: introduce dmm32_ai_get_sample()
X-Git-Tag: omap-for-v3.19/fixes-rc1~73^2~150
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0c0eadadcbe6ed9596568696f9c5b157707a7c8f;p=pandora-kernel.git

staging: comedi: dmm32at: introduce dmm32_ai_get_sample()

Introduce a helper function to read the two's complement analog input
sample from the hardware and munge it to the offset binary (unsigned)
format that comedi expects. Use the comedi_offset_munge() helper to
munge the data.

Use the new helper in the analog input (*insn_read) and in the interrupt
handler for the async command.

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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