diff options
| author | Peter Meerwald <pmeerw@pmeerw.net> | 2014-12-06 09:00:00 +0300 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2014-06-14 19:03:19 +0400 |
| commit | 09a1737e5509aff28346a7225a2eae35d1c5962f (patch) | |
| tree | d806143ff06275138282790c1b2dcd5cc2c2fc83 /drivers/iio | |
| parent | a476bc02eb4365d02ac71f20b5034e2437691e3f (diff) | |
| download | linux-09a1737e5509aff28346a7225a2eae35d1c5962f.tar.xz | |
iio:adc:ad7887: Use BIT() and GENMASK() macros
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/ad7887.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c index 749a6cadab8b..2fd012ee99f5 100644 --- a/drivers/iio/adc/ad7887.c +++ b/drivers/iio/adc/ad7887.c @@ -15,6 +15,7 @@ #include <linux/err.h> #include <linux/module.h> #include <linux/interrupt.h> +#include <linux/bitops.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> @@ -25,14 +26,14 @@ #include <linux/platform_data/ad7887.h> -#define AD7887_REF_DIS (1 << 5) /* on-chip reference disable */ -#define AD7887_DUAL (1 << 4) /* dual-channel mode */ -#define AD7887_CH_AIN1 (1 << 3) /* convert on channel 1, DUAL=1 */ -#define AD7887_CH_AIN0 (0 << 3) /* convert on channel 0, DUAL=0,1 */ -#define AD7887_PM_MODE1 (0) /* CS based shutdown */ -#define AD7887_PM_MODE2 (1) /* full on */ -#define AD7887_PM_MODE3 (2) /* auto shutdown after conversion */ -#define AD7887_PM_MODE4 (3) /* standby mode */ +#define AD7887_REF_DIS BIT(5) /* on-chip reference disable */ +#define AD7887_DUAL BIT(4) /* dual-channel mode */ +#define AD7887_CH_AIN1 BIT(3) /* convert on channel 1, DUAL=1 */ +#define AD7887_CH_AIN0 0 /* convert on channel 0, DUAL=0,1 */ +#define AD7887_PM_MODE1 0 /* CS based shutdown */ +#define AD7887_PM_MODE2 1 /* full on */ +#define AD7887_PM_MODE3 2 /* auto shutdown after conversion */ +#define AD7887_PM_MODE4 3 /* standby mode */ enum ad7887_channels { AD7887_CH0, @@ -40,8 +41,6 @@ enum ad7887_channels { AD7887_CH1, }; -#define RES_MASK(bits) ((1 << (bits)) - 1) - /** * struct ad7887_chip_info - chip specifc information * @int_vref_mv: the internal reference voltage @@ -167,7 +166,7 @@ static int ad7887_read_raw(struct iio_dev *indio_dev, if (ret < 0) return ret; *val = ret >> chan->scan_type.shift; - *val &= RES_MASK(chan->scan_type.realbits); + *val &= GENMASK(chan->scan_type.realbits - 1, 0); return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: if (st->reg) { |