regulator: da9063: Fix get_mode() functions to read sleep field

get_mode() is used to retrieve the active mode state. Settings-A
config is used during active state, whilst Settings-B is for
suspend. This means we only need to check the sleep field of each
buck and LDO as that field solely relates to Settings-A config.

This change is a clone of the get_mode() update which was committed
as part of:
 - regulator: da9062: fix suspend_enable/disable preparation
   [a72865f0]
Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Link: https://lore.kernel.org/r/20200324092516.60B5C3FB8D@swsrvapps-01.diasemi.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/da9063-regulator.c

@@ -226,7 +226,6 @@ static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned mode)
 static unsigned da9063_buck_get_mode(struct regulator_dev *rdev)
 {
 	struct da9063_regulator *regl = rdev_get_drvdata(rdev);
-	struct regmap_field *field;
 	unsigned int val;
 	int ret;
 
@@ -247,18 +246,7 @@ static unsigned da9063_buck_get_mode(struct regulator_dev *rdev)
 		return REGULATOR_MODE_NORMAL;
 	}
 
-	/* Detect current regulator state */
-	ret = regmap_field_read(regl->suspend, &val);
-	if (ret < 0)
-		return 0;
-
-	/* Read regulator mode from proper register, depending on state */
-	if (val)
-		field = regl->suspend_sleep;
-	else
-		field = regl->sleep;
-
-	ret = regmap_field_read(field, &val);
+	ret = regmap_field_read(regl->sleep, &val);
 	if (ret < 0)
 		return 0;
 
@@ -295,21 +283,9 @@ static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned mode)
 static unsigned da9063_ldo_get_mode(struct regulator_dev *rdev)
 {
 	struct da9063_regulator *regl = rdev_get_drvdata(rdev);
-	struct regmap_field *field;
 	int ret, val;
 
-	/* Detect current regulator state */
-	ret = regmap_field_read(regl->suspend, &val);
-	if (ret < 0)
-		return 0;
-
-	/* Read regulator mode from proper register, depending on state */
-	if (val)
-		field = regl->suspend_sleep;
-	else
-		field = regl->sleep;
-
-	ret = regmap_field_read(field, &val);
+	ret = regmap_field_read(regl->sleep, &val);
 	if (ret < 0)
 		return 0;