From: Melissa Wen <melissa.srw@gmail.com>
To: Lars-Peter Clausen <lars@metafoo.de>,
Michael Hennerich <Michael.Hennerich@analog.com>,
Stefan Popa <stefan.popa@analog.com>,
Jonathan Cameron <jic23@kernel.org>,
Hartmut Knaack <knaack.h@gmx.de>,
Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Barry Song <21cnbao@gmail.com>
Cc: linux-iio@vger.kernel.org, devel@driverdev.osuosl.org,
linux-kernel@vger.kernel.org, kernel-usp@googlegroups.com
Subject: [PATCH 2/4] staging: iio: ad7150: use FIELD_GET and GENMASK
Date: Fri, 3 May 2019 19:14:33 -0300 [thread overview]
Message-ID: <7f7d36348bca1de25bd70350b7c665be6441250f.1556919363.git.melissa.srw@gmail.com> (raw)
In-Reply-To: <cover.1556919363.git.melissa.srw@gmail.com>
Use the bitfield macro FIELD_GET, and GENMASK to do the shift and mask in
one go. This makes the code more readable than explicit masking followed
by a shift.
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
---
drivers/staging/iio/cdc/ad7150.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c
index 24601ba7db88..4ba46fb6ac02 100644
--- a/drivers/staging/iio/cdc/ad7150.c
+++ b/drivers/staging/iio/cdc/ad7150.c
@@ -5,6 +5,7 @@
* Copyright 2010-2011 Analog Devices Inc.
*/
+#include <linux/bitfield.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/kernel.h>
@@ -44,6 +45,9 @@
#define AD7150_SN0_REG 0x16
#define AD7150_ID_REG 0x17
+/* AD7150 masks */
+#define AD7150_THRESHTYPE_MSK GENMASK(6, 5)
+
/**
* struct ad7150_chip_info - instance specific chip data
* @client: i2c client for this device
@@ -136,7 +140,7 @@ static int ad7150_read_event_config(struct iio_dev *indio_dev,
if (ret < 0)
return ret;
- threshtype = (ret >> 5) & 0x03;
+ threshtype = FIELD_GET(AD7150_THRESHTYPE_MSK, ret);
adaptive = !!(ret & 0x80);
switch (type) {
--
2.20.1
next prev parent reply other threads:[~2019-05-03 22:14 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-03 22:13 [PATCH 0/4] staging: iio: ad7150: improve driver readability Melissa Wen
2019-05-03 22:13 ` [PATCH 1/4] staging: iio: ad7150: organize registers definition Melissa Wen
2019-05-04 10:13 ` Alexandru Ardelean
2019-05-05 12:52 ` Jonathan Cameron
2019-05-03 22:14 ` Melissa Wen [this message]
2019-05-04 10:43 ` [PATCH 2/4] staging: iio: ad7150: use FIELD_GET and GENMASK Alexandru Ardelean
2019-05-06 6:51 ` Ardelean, Alexandru
2019-05-07 20:44 ` Melissa Wen
2019-05-08 7:50 ` Ardelean, Alexandru
2019-05-03 22:15 ` [PATCH 3/4] staging: iio: ad7150: simplify i2c SMBus return treatment Melissa Wen
2019-05-04 10:36 ` Alexandru Ardelean
2019-05-05 12:59 ` Jonathan Cameron
2019-05-03 22:16 ` [PATCH 4/4] staging: iio: ad7150: clean up of comments Melissa Wen
2019-05-04 11:12 ` [PATCH 0/4] staging: iio: ad7150: improve driver readability Alexandru Ardelean
2019-05-04 14:42 ` Alexandru Ardelean
2019-05-05 13:05 ` Jonathan Cameron
2019-05-07 20:35 ` Melissa Wen
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