linux-kernel - [PATCH v8 12/14] regulator: rk808: cleanup parent device usage

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Message-Id: <20230504173618.142075-13-sebastian.reichel@collabora.com>
Date:   Thu,  4 May 2023 19:36:16 +0200
From:   Sebastian Reichel <sebastian.reichel@...labora.com>
To:     Heiko Stuebner <heiko@...ech.de>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Lee Jones <lee@...nel.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        kernel@...labora.com
Subject: [PATCH v8 12/14] regulator: rk808: cleanup parent device usage

By overridering the device's of_node a bit earlier we can
get the GPIOs and any other DT properties from our own
device instead of relying on the parent device.

Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
---
 drivers/regulator/rk808-regulator.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/regulator/rk808-regulator.c b/drivers/regulator/rk808-regulator.c
index 80ba782d8923..71a1ca8b917e 100644
--- a/drivers/regulator/rk808-regulator.c
+++ b/drivers/regulator/rk808-regulator.c
@@ -1245,20 +1245,19 @@ static const struct regulator_desc rk818_reg[] = {
 };
 
 static int rk808_regulator_dt_parse_pdata(struct device *dev,
-				   struct device *client_dev,
 				   struct regmap *map,
 				   struct rk808_regulator_data *pdata)
 {
 	struct device_node *np;
 	int tmp, ret = 0, i;
 
-	np = of_get_child_by_name(client_dev->of_node, "regulators");
+	np = of_get_child_by_name(dev->of_node, "regulators");
 	if (!np)
 		return -ENXIO;
 
 	for (i = 0; i < ARRAY_SIZE(pdata->dvs_gpio); i++) {
 		pdata->dvs_gpio[i] =
-			devm_gpiod_get_index_optional(client_dev, "dvs", i,
+			devm_gpiod_get_index_optional(dev, "dvs", i,
 						      GPIOD_OUT_LOW);
 		if (IS_ERR(pdata->dvs_gpio[i])) {
 			ret = PTR_ERR(pdata->dvs_gpio[i]);
@@ -1292,6 +1291,9 @@ static int rk808_regulator_probe(struct platform_device *pdev)
 	struct regmap *regmap;
 	int ret, i, nregulators;
 
+	pdev->dev.of_node = pdev->dev.parent->of_node;
+	pdev->dev.of_node_reused = true;
+
 	regmap = dev_get_regmap(pdev->dev.parent, NULL);
 	if (!regmap)
 		return -ENODEV;
@@ -1300,8 +1302,7 @@ static int rk808_regulator_probe(struct platform_device *pdev)
 	if (!pdata)
 		return -ENOMEM;
 
-	ret = rk808_regulator_dt_parse_pdata(&pdev->dev, pdev->dev.parent,
-					     regmap, pdata);
+	ret = rk808_regulator_dt_parse_pdata(&pdev->dev, regmap, pdata);
 	if (ret < 0)
 		return ret;
 
@@ -1335,8 +1336,6 @@ static int rk808_regulator_probe(struct platform_device *pdev)
 	}
 
 	config.dev = &pdev->dev;
-	config.dev->of_node = pdev->dev.parent->of_node;
-	config.dev->of_node_reused = true;
 	config.driver_data = pdata;
 	config.regmap = regmap;
 
-- 
2.39.2