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author | Ian Abbott <abbotti@mev.co.uk> | 2015-09-21 18:52:53 +0100 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-09-29 03:25:04 +0200 |
commit | 5459bc1281e628e6f57ee16c69eaf8a9622912e8 (patch) | |
tree | 896b7a8ac8ffcdd87f7bf5c9f49d38be00db61eb /drivers/staging/comedi/comedidev.h | |
parent | staging: comedi: comedidev.h: document struct comedi_buf_map (diff) | |
download | linux-5459bc1281e628e6f57ee16c69eaf8a9622912e8.tar.gz linux-5459bc1281e628e6f57ee16c69eaf8a9622912e8.tar.bz2 linux-5459bc1281e628e6f57ee16c69eaf8a9622912e8.zip |
staging: comedi: comedidev.h: document struct comedi_lrange
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/comedidev.h')
-rw-r--r-- | drivers/staging/comedi/comedidev.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index cfb7d520d82f..195fa5791c13 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -606,6 +606,17 @@ extern const struct comedi_lrange range_unknown; #define GCC_ZERO_LENGTH_ARRAY 0 #endif +/** + * struct comedi_lrange - Describes a COMEDI range table + * @length: Number of entries in the range table. + * @range: Array of &struct comedi_krange, one for each range. + * + * Each element of @range[] describes the minimum and maximum physical range + * range and the type of units. Typically, the type of unit is %UNIT_volt + * (i.e. volts) and the minimum and maximum are in millionths of a volt. + * There may also be a flag that indicates the minimum and maximum are merely + * scale factors for an unknown, external reference. + */ struct comedi_lrange { int length; struct comedi_krange range[GCC_ZERO_LENGTH_ARRAY]; |