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Commit e968d095 authored by Michael Hennerich's avatar Michael Hennerich Committed by Greg Kroah-Hartman
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staging: iio: ring_generic: provide IIO_CONST_ATTR_SCAN_EL_TYPE_WITH_SHIFT 



Signed-off-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Acked-by: default avatarJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 3ba2e493

drivers/staging/iio/ring_generic.h

+17 −0
Original line number Diff line number Diff line
@@ -292,6 +292,23 @@ ssize_t iio_scan_el_ts_show(struct device *dev, struct device_attribute *attr, 
 **/

#define IIO_CONST_ATTR_SCAN_EL_TYPE(_name, _sign, _bits, _storagebits) \

	IIO_CONST_ATTR(_name##_type, #_sign#_bits"/"#_storagebits);



/**

 * IIO_CONST_ATTR_SCAN_EL_TYPE_WITH_SHIFT - attr to specify the data format of a scan el

 * @name: the scan el name (may be more general and cover a set of scan elements

 * @_sign: either s or u for signed or unsigned

 * @_bits: number of actual bits occuplied by the value

 * @_storagebits: number of bits _bits is padded to when read out of buffer

 * @_shiftbits: number of bits _shiftbits the result must be shifted

 **/

#define IIO_CONST_ATTR_SCAN_EL_TYPE_WITH_SHIFT(_name, _sign, _bits, \

					       _storagebits, _shiftbits) \

	IIO_CONST_ATTR(_name##_type, #_sign#_bits"/"#_storagebits \

		       ">>"#_shiftbits);



#define IIO_SCAN_EL_TYPE_SIGNED         's'

#define IIO_SCAN_EL_TYPE_UNSIGNED       'u'



/*

 * These are mainly provided to allow for a change of implementation if a device

 * has a large number of scan elements