staging: comedi: pcl818: introduce pcl818_ai_get_sample()

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Introduce a helper function to read the 12-bit analog input data
sample and optionally return the channel that the sample was for.
The channel is only used in the interrupt routine to check for
dropped samples.

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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H Hartley Sweeten 2014-02-17 14:27:16 -07:00 • committed by Greg Kroah-Hartman

parent 66581ca576

commit 8fc9f652ab

1 changed files with 21 additions and 9 deletions

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drivers/staging/comedi/drivers/pcl818.c

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