Commit 6bb835f3 authored by Andriy Tryshnivskyy's avatar Andriy Tryshnivskyy Committed by Jonathan Cameron
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iio: core: Introduce IIO_VAL_INT_64. 



Introduce IIO_VAL_INT_64 to read 64-bit value for
channel attribute. Val is used as lower 32 bits.

Signed-off-by: default avatarAndriy Tryshnivskyy <andriy.tryshnivskyy@opensynergy.com>
Link: https://lore.kernel.org/r/20211024091627.28031-2-andriy.tryshnivskyy@opensynergy.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 2c4ce504

drivers/iio/industrialio-core.c

+3 −0
Original line number Diff line number Diff line
@@ -702,6 +702,9 @@ static ssize_t __iio_format_value(char *buf, size_t offset, unsigned int type, 
	}

	case IIO_VAL_CHAR:

		return sysfs_emit_at(buf, offset, "%c", (char)vals[0]);

	case IIO_VAL_INT_64:

		tmp2 = (s64)((((u64)vals[1]) << 32) | (u32)vals[0]);

		return sysfs_emit_at(buf, offset, "%lld", tmp2);

	default:

		return 0;

	}

include/linux/iio/types.h

+1 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ enum iio_event_info { 
#define IIO_VAL_INT_PLUS_NANO 3

#define IIO_VAL_INT_PLUS_MICRO_DB 4

#define IIO_VAL_INT_MULTIPLE 5

#define IIO_VAL_INT_64 6 /* 64-bit data, val is lower 32 bits */

#define IIO_VAL_FRACTIONAL 10

#define IIO_VAL_FRACTIONAL_LOG2 11

#define IIO_VAL_CHAR 12