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From 41b693ffea78e5e754ba7c1b7b85a20deff8ba9f Mon Sep 17 00:00:00 2001
From: Andriy Tryshnivskyy <andriy.tryshnivskyy@opensynergy.com>
Date: Mon, 25 Oct 2021 13:30:19 +0300
Subject: [PATCH] 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: Andriy Tryshnivskyy <andriy.tryshnivskyy@opensynergy.com>
---
drivers/iio/industrialio-core.c | 3 +++
include/linux/iio/types.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 261d3b17edc9..71ecb2e66714 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -638,6 +638,9 @@ static ssize_t __iio_format_value(char *buf, size_t len, unsigned int type,
}
case IIO_VAL_CHAR:
return scnprintf(buf, len, "%c", (char)vals[0]);
+ case IIO_VAL_INT_64:
+ tmp = (s64)((((u64)vals[1]) << 32) | (u32)vals[0]);
+ return scnprintf(buf, len, "%lld", tmp);
default:
return 0;
}
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
index 1e3ed6f55bca..8d37cc5a3883 100644
--- a/include/linux/iio/types.h
+++ b/include/linux/iio/types.h
@@ -23,6 +23,7 @@ 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
--
2.17.1
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