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[v3,11/27] staging: iio: resolver: ad2s1210: add debugfs reg access

Message ID 20230929-ad2s1210-mainline-v3-11-fa4364281745@baylibre.com
State Accepted
Commit 569dc8054e702f504bd8d07e2c4e315b2097d746
Headers show
Series [v3,01/27] dt-bindings: iio: resolver: add devicetree bindings for ad2s1210 | expand

Commit Message

David Lechner Sept. 29, 2023, 5:23 p.m. UTC 
From: David Lechner <david@lechnology.com>

From: David Lechner <dlechner@baylibre.com>

This add an implementation of debugfs_reg_access for the AD2S1210
driver.

Signed-off-by: David Lechner <dlechner@baylibre.com>
---

v3 changes: None

 drivers/staging/iio/resolver/ad2s1210.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
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Patch

diff --git a/drivers/staging/iio/resolver/ad2s1210.c b/drivers/staging/iio/resolver/ad2s1210.c
index 0663a51d04ad..31415fbb6384 100644
--- a/drivers/staging/iio/resolver/ad2s1210.c
+++ b/drivers/staging/iio/resolver/ad2s1210.c
@@ -614,9 +614,29 @@  static int ad2s1210_initial(struct ad2s1210_state *st)
 	return ret;
 }
 
+static int ad2s1210_debugfs_reg_access(struct iio_dev *indio_dev,
+				       unsigned int reg, unsigned int writeval,
+				       unsigned int *readval)
+{
+	struct ad2s1210_state *st = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	if (readval)
+		ret = regmap_read(st->regmap, reg, readval);
+	else
+		ret = regmap_write(st->regmap, reg, writeval);
+
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
 static const struct iio_info ad2s1210_info = {
 	.read_raw = ad2s1210_read_raw,
 	.attrs = &ad2s1210_attribute_group,
+	.debugfs_reg_access = &ad2s1210_debugfs_reg_access,
 };
 
 static int ad2s1210_setup_clocks(struct ad2s1210_state *st)