diff options
| -rw-r--r-- | Documentation/driver-api/iio/buffers.rst | 4 | ||||
| -rw-r--r-- | include/linux/iio/iio.h | 23 |
2 files changed, 23 insertions, 4 deletions
diff --git a/Documentation/driver-api/iio/buffers.rst b/Documentation/driver-api/iio/buffers.rst index 63f364e862d1..e16abaf826fe 100644 --- a/Documentation/driver-api/iio/buffers.rst +++ b/Documentation/driver-api/iio/buffers.rst @@ -78,7 +78,7 @@ fields in iio_chan_spec definition:: /* other members */ int scan_index struct { - char sign; + char format; u8 realbits; u8 storagebits; u8 shift; @@ -98,7 +98,7 @@ following channel definition:: /* other stuff here */ .scan_index = 0, .scan_type = { - .sign = 's', + .format = IIO_SCAN_FORMAT_SIGNED_INT, .realbits = 12, .storagebits = 16, .shift = 4, diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index ecbaeecbe0ac..e03b7e912d7d 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -177,8 +177,24 @@ struct iio_event_spec { }; /** + * define IIO_SCAN_FORMAT_SIGNED_INT - signed integer data format + * + * &iio_scan_type.format value for signed integers (two's complement). + */ +#define IIO_SCAN_FORMAT_SIGNED_INT 's' + +/** + * define IIO_SCAN_FORMAT_UNSIGNED_INT - unsigned integer data format + * + * &iio_scan_type.format value for unsigned integers. + */ +#define IIO_SCAN_FORMAT_UNSIGNED_INT 'u' + +/** * struct iio_scan_type - specification for channel data format in buffer - * @sign: 's' or 'u' to specify signed or unsigned + * @sign: Deprecated, use @format instead. + * @format: Data format, can have any of the IIO_SCAN_FORMAT_* + * values. * @realbits: Number of valid bits of data * @storagebits: Realbits + padding * @shift: Shift right by this before masking out realbits. @@ -189,7 +205,10 @@ struct iio_event_spec { * @endianness: little or big endian */ struct iio_scan_type { - char sign; + union { + char sign; + char format; + }; u8 realbits; u8 storagebits; u8 shift; |