linux-kernel - [PATCH AUTOSEL 6.12 466/486] regulator: ad5398: Add device tree support

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Message-Id: <20250505223922.2682012-466-sashal@kernel.org>
Date: Mon,  5 May 2025 18:39:02 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Isaac Scott <isaac.scott@...asonboard.com>,
	Michael Hennerich <michael.hennerich@...log.com>,
	Mark Brown <broonie@...nel.org>,
	Sasha Levin <sashal@...nel.org>,
	lgirdwood@...il.com
Subject: [PATCH AUTOSEL 6.12 466/486] regulator: ad5398: Add device tree support

From: Isaac Scott <isaac.scott@...asonboard.com>

[ Upstream commit 5a6a461079decea452fdcae955bccecf92e07e97 ]

Previously, the ad5398 driver used only platform_data, which is
deprecated in favour of device tree. This caused the AD5398 to fail to
probe as it could not load its init_data. If the AD5398 has a device
tree node, pull the init_data from there using
of_get_regulator_init_data.

Signed-off-by: Isaac Scott <isaac.scott@...asonboard.com>
Acked-by: Michael Hennerich <michael.hennerich@...log.com>
Link: https://patch.msgid.link/20250128173143.959600-4-isaac.scott@ideasonboard.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/regulator/ad5398.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/regulator/ad5398.c b/drivers/regulator/ad5398.c
index 40f7dba42b5ad..404cbe32711e7 100644
--- a/drivers/regulator/ad5398.c
+++ b/drivers/regulator/ad5398.c
@@ -14,6 +14,7 @@
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
 
 #define AD5398_CURRENT_EN_MASK	0x8000
 
@@ -221,15 +222,20 @@ static int ad5398_probe(struct i2c_client *client)
 	const struct ad5398_current_data_format *df =
 			(struct ad5398_current_data_format *)id->driver_data;
 
-	if (!init_data)
-		return -EINVAL;
-
 	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
 	if (!chip)
 		return -ENOMEM;
 
 	config.dev = &client->dev;
+	if (client->dev.of_node)
+		init_data = of_get_regulator_init_data(&client->dev,
+						       client->dev.of_node,
+						       &ad5398_reg);
+	if (!init_data)
+		return -EINVAL;
+
 	config.init_data = init_data;
+	config.of_node = client->dev.of_node;
 	config.driver_data = chip;
 
 	chip->client = client;
-- 
2.39.5