From: Carlos Song carlos.song@nxp.com
commit 78ad6864e9e012cdba7c353d044d21ffcfd5f34b upstream.
The absence of a correct offset leads an incorrect ODR mode readback after use a hexadecimal number to mark the value from FXOS8700_CTRL_REG1.
Get ODR mode by field mask and FIELD_GET clearly and conveniently. And attach other additional fix for keeping the original code logic and a good readability.
Fixes: 84e5ddd5c46e ("iio: imu: Add support for the FXOS8700 IMU") Signed-off-by: Carlos Song carlos.song@nxp.com Link: https://lore.kernel.org/r/20230118074227.1665098-2-carlos.song@nxp.com Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iio/imu/fxos8700_core.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
--- a/drivers/iio/imu/fxos8700_core.c +++ b/drivers/iio/imu/fxos8700_core.c @@ -10,6 +10,7 @@ #include <linux/regmap.h> #include <linux/acpi.h> #include <linux/bitops.h> +#include <linux/bitfield.h>
#include <linux/iio/iio.h> #include <linux/iio/sysfs.h> @@ -144,9 +145,9 @@ #define FXOS8700_NVM_DATA_BNK0 0xa7
/* Bit definitions for FXOS8700_CTRL_REG1 */ -#define FXOS8700_CTRL_ODR_MSK 0x38 #define FXOS8700_CTRL_ODR_MAX 0x00 #define FXOS8700_CTRL_ODR_MIN GENMASK(4, 3) +#define FXOS8700_CTRL_ODR_MSK GENMASK(5, 3)
/* Bit definitions for FXOS8700_M_CTRL_REG1 */ #define FXOS8700_HMS_MASK GENMASK(1, 0) @@ -508,10 +509,9 @@ static int fxos8700_set_odr(struct fxos8 if (i >= odr_num) return -EINVAL;
- return regmap_update_bits(data->regmap, - FXOS8700_CTRL_REG1, - FXOS8700_CTRL_ODR_MSK + FXOS8700_ACTIVE, - fxos8700_odr[i].bits << 3 | active_mode); + val &= ~FXOS8700_CTRL_ODR_MSK; + val |= FIELD_PREP(FXOS8700_CTRL_ODR_MSK, fxos8700_odr[i].bits) | FXOS8700_ACTIVE; + return regmap_write(data->regmap, FXOS8700_CTRL_REG1, val); }
static int fxos8700_get_odr(struct fxos8700_data *data, enum fxos8700_sensor t, @@ -524,7 +524,7 @@ static int fxos8700_get_odr(struct fxos8 if (ret) return ret;
- val &= FXOS8700_CTRL_ODR_MSK; + val = FIELD_GET(FXOS8700_CTRL_ODR_MSK, val);
for (i = 0; i < odr_num; i++) if (val == fxos8700_odr[i].bits)