linux-kernel - [PATCH v2 7/7] iio: adc: ad7091r-base: Add debugfs reg access

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Date:   Thu, 23 Nov 2023 13:43:06 -0300
From:   Marcelo Schmitt <marcelo.schmitt@...log.com>
To:     <paul.cercueil@...log.com>, <Michael.Hennerich@...log.com>,
        <lars@...afoo.de>, <jic23@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <marcelo.schmitt1@...il.com>
CC:     Marcelo Schmitt <marcelo.schmitt@...log.com>,
        <linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 7/7] iio: adc: ad7091r-base: Add debugfs reg access

Add direct register access support for AD7091R-2/-4/-5/-8 ADCs.

Signed-off-by: Marcelo Schmitt <marcelo.schmitt@...log.com>
---
 drivers/iio/adc/ad7091r-base.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/iio/adc/ad7091r-base.c b/drivers/iio/adc/ad7091r-base.c
index dbc60ea1bafc..4d5051316428 100644
--- a/drivers/iio/adc/ad7091r-base.c
+++ b/drivers/iio/adc/ad7091r-base.c
@@ -177,8 +177,20 @@ static int ad7091r_read_raw(struct iio_dev *iio_dev,
 	return ret;
 }
 
+static int ad7091r_reg_access(struct iio_dev *indio_dev, unsigned int reg,
+			      unsigned int writeval, unsigned int *readval)
+{
+	struct ad7091r_state *st  = iio_priv(indio_dev);
+
+	if (readval)
+		return regmap_read(st->map, reg, readval);
+
+	return regmap_write(st->map, reg, writeval);
+}
+
 static const struct iio_info ad7091r_info = {
 	.read_raw = ad7091r_read_raw,
+	.debugfs_reg_access = &ad7091r_reg_access,
 };
 
 static irqreturn_t ad7091r_event_handler(int irq, void *private)
-- 
2.42.0