Title: [9367] trunk/drivers/staging/iio/ring_generic.h: merge from upstream: staging: iio: ring_generic: provide IIO_CONST_ATTR_SCAN_EL_TYPE_WITH_SHIFT
- Revision
- 9367
- Author
- vapier
- Date
- 2010-10-24 16:53:05 -0400 (Sun, 24 Oct 2010)
Log Message
merge from upstream: staging: iio: ring_generic: provide IIO_CONST_ATTR_SCAN_EL_TYPE_WITH_SHIFT
From: Michael Hennerich <[email protected]>
Signed-off-by: Michael Hennerich <[email protected]>
Acked-by: Jonathan Cameron <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Modified Paths
Diff
Modified: trunk/drivers/staging/iio/ring_generic.h (9366 => 9367)
--- trunk/drivers/staging/iio/ring_generic.h 2010-10-24 20:52:08 UTC (rev 9366)
+++ trunk/drivers/staging/iio/ring_generic.h 2010-10-24 20:53:05 UTC (rev 9367)
@@ -292,6 +292,23 @@
**/
#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
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