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

David Lechner
2023-09-29T17:26:44Z

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(+)

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)

--
2.42.0