UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

staging: iio: ring_generic: provide IIO_CONST_ATTR_SCAN_EL_TYPE_WITH_SHIFT 

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Michael Hennerich 2010-10-07 14:24:33 +02:00 committed by Greg Kroah-Hartman
parent 3ba2e4939d
commit e968d09504
1 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/staging/iio/ring_generic.h
View File

@ -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