[PATCH v4 8/8] iio: adc: ti-ads1015: inline ads1015_set_conv_mode()

[Archit Anant <architanant5@gmail.com>]

The ads1015_set_conv_mode() helper function is a single-line wrapper
around regmap_update_bits().

With the transition to the FIELD_PREP() macro, the raw register updates
are now self-documenting and easy to read. Remove the wrapper function
and inline the regmap calls directly at the call sites.

This also allows for the removal of the final custom shift macro,
ADS1015_CFG_MOD_SHIFT.

Suggested-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Archit Anant <architanant5@gmail.com>
---
 drivers/iio/adc/ti-ads1015.c | 27 +++++++++++++--------------
 1 file changed, 13 insertions(+), 14 deletions(-)

diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c
index d675f82c0bd5..2072b9dd43e8 100644
--- a/drivers/iio/adc/ti-ads1015.c
+++ b/drivers/iio/adc/ti-ads1015.c
@@ -40,8 +40,6 @@
 #define ADS1015_LO_THRESH_REG	0x02
 #define ADS1015_HI_THRESH_REG	0x03
 
-#define ADS1015_CFG_MOD_SHIFT	8
-
 #define ADS1015_CFG_COMP_QUE_MASK	GENMASK(1, 0)
 #define ADS1015_CFG_COMP_LAT_MASK	BIT(2)
 #define ADS1015_CFG_COMP_POL_MASK	BIT(3)
@@ -739,6 +737,7 @@ static int ads1015_disable_event_config(struct ads1015_data *data,
 	const struct iio_chan_spec *chan, int comp_mode)
 {
 	unsigned int val = FIELD_PREP(ADS1015_CFG_COMP_QUE_MASK, ADS1015_CFG_COMP_DISABLE);
+	struct regmap *map = data->regmap;
 	int ret;
 
 	if (!ads1015_event_channel_enabled(data))
@@ -751,7 +750,7 @@ static int ads1015_disable_event_config(struct ads1015_data *data,
 			comp_mode == ADS1015_CFG_COMP_MODE_WINDOW)
 		return 0;
 
-	ret = regmap_update_bits(data->regmap, ADS1015_CFG_REG, ADS1015_CFG_COMP_QUE_MASK, val);
+	ret = regmap_update_bits(map, ADS1015_CFG_REG, ADS1015_CFG_COMP_QUE_MASK, val);
 	if (ret)
 		return ret;
 
@@ -913,19 +912,14 @@ static void ads1015_get_channels_config(struct i2c_client *client)
 	}
 }
 
-static int ads1015_set_conv_mode(struct ads1015_data *data, int mode)
-{
-	return regmap_update_bits(data->regmap, ADS1015_CFG_REG,
-				  ADS1015_CFG_MOD_MASK,
-				  mode << ADS1015_CFG_MOD_SHIFT);
-}
-
 static void ads1015_power_down(void *p)
 {
+	unsigned int val = FIELD_PREP(ADS1015_CFG_MOD_MASK, ADS1015_SINGLESHOT);
 	struct ads1015_data *data = p;
+	struct regmap *map = data->regmap;
 	int ret;
 
-	ret = ads1015_set_conv_mode(data, ADS1015_SINGLESHOT);
+	ret = regmap_update_bits(map, ADS1015_CFG_REG, ADS1015_CFG_MOD_MASK, val);
 	if (ret)
 		dev_warn(regmap_get_device(data->regmap),
 			 "Failed to power down (%pe)\n", ERR_PTR(ret));
@@ -933,6 +927,7 @@ static void ads1015_power_down(void *p)
 
 static int ads1015_probe(struct i2c_client *client)
 {
+	unsigned int cfg_mode = FIELD_PREP(ADS1015_CFG_MOD_MASK, ADS1015_CONTINUOUS);
 	const struct ads1015_chip_data *chip;
 	struct device *dev = &client->dev;
 	struct iio_dev *indio_dev;
@@ -1028,7 +1023,7 @@ static int ads1015_probe(struct i2c_client *client)
 			return ret;
 	}
 
-	ret = ads1015_set_conv_mode(data, ADS1015_CONTINUOUS);
+	ret = regmap_update_bits(data->regmap, ADS1015_CFG_REG, ADS1015_CFG_MOD_MASK, cfg_mode);
 	if (ret)
 		return ret;
 
@@ -1049,19 +1044,23 @@ static int ads1015_probe(struct i2c_client *client)
 
 static int ads1015_runtime_suspend(struct device *dev)
 {
+	unsigned int val = FIELD_PREP(ADS1015_CFG_MOD_MASK, ADS1015_SINGLESHOT);
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
 	struct ads1015_data *data = iio_priv(indio_dev);
+	struct regmap *map = data->regmap;
 
-	return ads1015_set_conv_mode(data, ADS1015_SINGLESHOT);
+	return regmap_update_bits(map, ADS1015_CFG_REG, ADS1015_CFG_MOD_MASK, val);
 }
 
 static int ads1015_runtime_resume(struct device *dev)
 {
+	unsigned int val = FIELD_PREP(ADS1015_CFG_MOD_MASK, ADS1015_CONTINUOUS);
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
 	struct ads1015_data *data = iio_priv(indio_dev);
+	struct regmap *map = data->regmap;
 	int ret;
 
-	ret = ads1015_set_conv_mode(data, ADS1015_CONTINUOUS);
+	ret = regmap_update_bits(map, ADS1015_CFG_REG, ADS1015_CFG_MOD_MASK, val);
 	if (!ret)
 		data->conv_invalid = true;
 
-- 
2.39.5