linux-kernel - [PATCH v3 5/6] iio: accel: adxl345: Group bus configuration

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Message-Id: <20240323122030.21800-6-l.rubusch@gmail.com>
Date: Sat, 23 Mar 2024 12:20:29 +0000
From: Lothar Rubusch <l.rubusch@...il.com>
To: lars@...afoo.de,
	Michael.Hennerich@...log.com,
	jic23@...nel.org,
	robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org
Cc: linux-iio@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	eraretuya@...il.com,
	l.rubusch@...il.com
Subject: [PATCH v3 5/6] iio: accel: adxl345: Group bus configuration

In the probe function group bus configuration and the
indio_dev initialization to improve readability. Add a
comment to the probe function to explain function arguments.

Signed-off-by: Lothar Rubusch <l.rubusch@...il.com>
---
 drivers/iio/accel/adxl345_core.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c
index e3718d0dd..662628cdf 100644
--- a/drivers/iio/accel/adxl345_core.c
+++ b/drivers/iio/accel/adxl345_core.c
@@ -209,6 +209,16 @@ static void adxl345_powerdown(void *regmap)
 	regmap_write(regmap, ADXL345_REG_POWER_CTL, ADXL345_POWER_CTL_STANDBY);
 }
 
+/**
+ * adxl345_core_probe() - probe and setup for the adxl345 accelerometer,
+ *                        also covers the adlx375 accelerometer
+ * @dev:	Driver model representation of the device
+ * @regmap:	Regmap instance for the device
+ * @setup:	Setup routine to be executed right before the standard device
+ *		setup, can also be set to NULL if not required
+ *
+ * Return: 0 on success, negative errno on error
+ */
 int adxl345_core_probe(struct device *dev, struct regmap *regmap,
 	int (*setup)(struct device*, struct regmap*))
 {
@@ -238,22 +248,23 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap,
 
 	data = iio_priv(indio_dev);
 	data->regmap = regmap;
-	/* Enable full-resolution mode */
+
 	data->info = device_get_match_data(dev);
 	if (!data->info)
 		return -ENODEV;
 
-	ret = regmap_update_bits(regmap, ADXL345_REG_DATA_FORMAT,
-				 ADXL345_DATA_FORMAT_MSK, ADXL345_DATA_FORMAT_FULL_RES);
-	if (ret)
-		return dev_err_probe(dev, ret, "Failed to set data range\n");
-
 	indio_dev->name = data->info->name;
 	indio_dev->info = &adxl345_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = adxl345_channels;
 	indio_dev->num_channels = ARRAY_SIZE(adxl345_channels);
 
+	/* Enable full-resolution mode */
+	ret = regmap_update_bits(regmap, ADXL345_REG_DATA_FORMAT,
+				 ADXL345_DATA_FORMAT_MSK, ADXL345_DATA_FORMAT_FULL_RES);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to set data range\n");
+
 	/* Enable measurement mode */
 	ret = adxl345_powerup(data->regmap);
 	if (ret < 0)
-- 
2.25.1