linux-kernel - [PATCH 07/10] iio: accel: BMA220 add debugfs reg access

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Message-ID: <20250901194742.11599-8-petre.rodan@subdimension.ro>
Date: Mon,  1 Sep 2025 22:47:33 +0300
From: Petre Rodan <petre.rodan@...dimension.ro>
To: linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Petre Rodan <petre.rodan@...dimension.ro>,
	Jonathan Cameron <jic23@...nel.org>,
	David Lechner <dlechner@...libre.com>,
	Nuno Sá <nuno.sa@...log.com>,
	Andy Shevchenko <andy@...nel.org>
Subject: [PATCH 07/10] iio: accel: BMA220 add debugfs reg access

Allow read/write access to sensor registers for use in unit-tests.

Signed-off-by: Petre Rodan <petre.rodan@...dimension.ro>
---
 drivers/iio/accel/bma220_core.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/iio/accel/bma220_core.c b/drivers/iio/accel/bma220_core.c
index e60acd62cf96..41889cdcef76 100644
--- a/drivers/iio/accel/bma220_core.c
+++ b/drivers/iio/accel/bma220_core.c
@@ -433,10 +433,21 @@ static int bma220_read_avail(struct iio_dev *indio_dev,
 	}
 }

+static int bma220_reg_access(struct iio_dev *indio_dev, unsigned int reg,
+			     unsigned int writeval, unsigned int *readval)
+{
+	struct bma220_data *data = iio_priv(indio_dev);
+
+	if (readval)
+		return regmap_read(data->regmap, reg, readval);
+	return regmap_write(data->regmap, reg, writeval);
+}
+
 static const struct iio_info bma220_info = {
 	.read_raw		= bma220_read_raw,
 	.write_raw		= bma220_write_raw,
 	.read_avail		= bma220_read_avail,
+	.debugfs_reg_access	= &bma220_reg_access,
 };

 static int bma220_reset(struct bma220_data *data, bool up)
--
2.49.1