[PATCH v3 2/5] iio: imu: fxos8700: improve readability by field mask and regmap_write

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From: Carlos Song <carlos.song@xxxxxxx>

FXOS8700_CTRL_ODR_MSK is a hex digit mask and FXOS8700_CTRL_ODR_GENMSK
is a field mask. They have a similar function. And mixing regmap_write
and regmap_update_bits isn't good for readability.

Remove FXOS8700_CTRL_ODR_GENMSK and set FXOS8700_CTRL_ODR_MSK a field
mask definition with a synchronous change. Use regmap_write() instead
of regmap_update_bits() to update bits. They are good for readability.

Fixes: 84e5ddd5c46e ("iio: imu: Add support for the FXOS8700 IMU")
Signed-off-by: Carlos Song <carlos.song@xxxxxxx>

Changes for V3:
- Remove FXOS8700_CTRL_ODR_GENMSK and set FXOS8700_CTRL_ODR_MSK a
  field mask.
- Legal use of filed mask and FIELD_PREP() to select ODR mode
- Rework commit log

diff --git a/drivers/iio/imu/fxos8700_core.c b/drivers/iio/imu/fxos8700_core.c
index 83ab7d0f79b3..a1af5d0fde5d 100644
--- a/drivers/iio/imu/fxos8700_core.c
+++ b/drivers/iio/imu/fxos8700_core.c
@@ -145,10 +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_GENMSK    GENMASK(5, 3)
+#define FXOS8700_CTRL_ODR_MSK       GENMASK(5, 3)
 
 /* Bit definitions for FXOS8700_M_CTRL_REG1 */
 #define FXOS8700_HMS_MASK           GENMASK(1, 0)
@@ -510,10 +509,8 @@ static int fxos8700_set_odr(struct fxos8700_data *data, enum fxos8700_sensor t,
 	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 = val | FIELD_PREP(FXOS8700_CTRL_ODR_MSK, fxos8700_odr[i].bits) | active_mode;
+	return regmap_write(data->regmap, FXOS8700_CTRL_REG1, val);
 }
 
 static int fxos8700_get_odr(struct fxos8700_data *data, enum fxos8700_sensor t,
@@ -526,7 +523,7 @@ static int fxos8700_get_odr(struct fxos8700_data *data, enum fxos8700_sensor t,
 	if (ret)
 		return ret;
 
-	val = FIELD_GET(FXOS8700_CTRL_ODR_GENMSK, val);
+	val = FIELD_GET(FXOS8700_CTRL_ODR_MSK, val);
 
 	for (i = 0; i < odr_num; i++)
 		if (val == fxos8700_odr[i].bits)
-- 
2.34.1




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