iio: core: introduce IIO_CHAN_INFO_HARDWAREGAIN

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 6fdbdb8..897c6b01 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -34,6 +34,7 @@
 	IIO_CHAN_INFO_SAMP_FREQ,
 	IIO_CHAN_INFO_FREQUENCY,
 	IIO_CHAN_INFO_PHASE,
+	IIO_CHAN_INFO_HARDWAREGAIN,
 };
 
 #define IIO_CHAN_INFO_SHARED_BIT(type) BIT(type*2)
@@ -95,6 +96,10 @@
 	IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_PHASE)
 #define IIO_CHAN_INFO_PHASE_SHARED_BIT			\
 	IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_PHASE)
+#define IIO_CHAN_INFO_HARDWAREGAIN_SEPARATE_BIT			\
+	IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_HARDWAREGAIN)
+#define IIO_CHAN_INFO_HARDWAREGAIN_SHARED_BIT			\
+	IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_HARDWAREGAIN)
 
 enum iio_endian {
 	IIO_CPU,