linux-kernel - [PATCH v2 02/14] iio: accel: adxl345: add debug register access

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Message-Id: <20250210110119.260858-3-l.rubusch@gmail.com>
Date: Mon, 10 Feb 2025 11:01:07 +0000
From: Lothar Rubusch <l.rubusch@...il.com>
To: lars@...afoo.de,
	Michael.Hennerich@...log.com,
	jic23@...nel.org
Cc: linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	eraretuya@...il.com,
	l.rubusch@...il.com
Subject: [PATCH v2 02/14] iio: accel: adxl345: add debug register access

Add the possibility to verify the content of the configuration
registers of the sensor in preparation for upcomming feature
implementations.

Signed-off-by: Lothar Rubusch <l.rubusch@...il.com>
---
 drivers/iio/accel/adxl345_core.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c
index c24692c51893..468d562de227 100644
--- a/drivers/iio/accel/adxl345_core.c
+++ b/drivers/iio/accel/adxl345_core.c
@@ -202,6 +202,16 @@ static int adxl345_write_raw(struct iio_dev *indio_dev,
 	return -EINVAL;
 }
 
+static int adxl345_reg_access(struct iio_dev *indio_dev, unsigned int reg,
+			      unsigned int writeval, unsigned int *readval)
+{
+	struct adxl345_state *st = iio_priv(indio_dev);
+
+	if (readval)
+		return regmap_read(st->regmap, reg, readval);
+	return regmap_write(st->regmap, reg, writeval);
+}
+
 static int adxl345_set_watermark(struct iio_dev *indio_dev, unsigned int value)
 {
 	struct adxl345_state *st = iio_priv(indio_dev);
@@ -467,6 +477,7 @@ static const struct iio_info adxl345_info = {
 	.read_raw	= adxl345_read_raw,
 	.write_raw	= adxl345_write_raw,
 	.write_raw_get_fmt	= adxl345_write_raw_get_fmt,
+	.debugfs_reg_access = &adxl345_reg_access,
 	.hwfifo_set_watermark = adxl345_set_watermark,
 };
 
-- 
2.39.5