iio: accel: adxl345: use HZ macro from units.h

Remove duplicated definition of NHZ_PER_HZ, because it's available in
the units.h as NANOHZ_PER_HZ.

Signed-off-by: Dmitry Rokosov <ddrokosov@sberdevices.ru>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220812165243.22177-4-ddrokosov@sberdevices.ru
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c
index 370bfec..1919e00 100644 (file)
--- a/drivers/iio/accel/adxl345_core.c
+++ b/drivers/iio/accel/adxl345_core.c
@@ -10,6 +10,7 @@
 #include <linux/module.h>
 #include <linux/property.h>
 #include <linux/regmap.h>
+#include <linux/units.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -32,7 +33,6 @@
 
 #define ADXL345_BW_RATE                        GENMASK(3, 0)
 #define ADXL345_BASE_RATE_NANO_HZ      97656250LL
-#define NHZ_PER_HZ                     1000000000LL
 
 #define ADXL345_POWER_CTL_MEASURE      BIT(3)
 #define ADXL345_POWER_CTL_STANDBY      0x00
@@ -139,7 +139,7 @@ static int adxl345_read_raw(struct iio_dev *indio_dev,
 
                samp_freq_nhz = ADXL345_BASE_RATE_NANO_HZ <<
                                (regval & ADXL345_BW_RATE);
-               *val = div_s64_rem(samp_freq_nhz, NHZ_PER_HZ, val2);
+               *val = div_s64_rem(samp_freq_nhz, NANOHZ_PER_HZ, val2);
 
                return IIO_VAL_INT_PLUS_NANO;
        }
@@ -164,7 +164,8 @@ static int adxl345_write_raw(struct iio_dev *indio_dev,
                                    ADXL345_REG_OFS_AXIS(chan->address),
                                    val / 4);
        case IIO_CHAN_INFO_SAMP_FREQ:
-               n = div_s64(val * NHZ_PER_HZ + val2, ADXL345_BASE_RATE_NANO_HZ);
+               n = div_s64(val * NANOHZ_PER_HZ + val2,
+                           ADXL345_BASE_RATE_NANO_HZ);
 
                return regmap_update_bits(data->regmap, ADXL345_REG_BW_RATE,
                                          ADXL345_BW_RATE,