linux-kernel - [PATCH v2 6/7] i2c: mux: pinctrl: remove CONFIG

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Message-Id: <20220323091810.329217-7-clement.leger@bootlin.com>
Date:   Wed, 23 Mar 2022 10:18:09 +0100
From:   Clément Léger <clement.leger@...tlin.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Daniel Scally <djrscally@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Wolfram Sang <wsa@...nel.org>, Peter Rosin <peda@...ntia.se>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Len Brown <lenb@...nel.org>
Cc:     Hans de Goede <hdegoede@...hat.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Allan Nielsen <allan.nielsen@...rochip.com>,
        linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-i2c@...r.kernel.org,
        Clément Léger <clement.leger@...tlin.com>
Subject: [PATCH v2 6/7] i2c: mux: pinctrl: remove CONFIG_OF dependency and use fwnode API

In order to use i2c muxes with all types of nodes, switch to fwnode
API. The fwnode layer will allow to use this with both device_node and
software_node.

This commits is simply replacing the use of "of_" prefixed functions
with there fwnode equivalent.

Signed-off-by: Clément Léger <clement.leger@...tlin.com>
---
 drivers/i2c/muxes/Kconfig           |  1 -
 drivers/i2c/muxes/i2c-mux-pinctrl.c | 23 ++++++++++++-----------
 2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/i2c/muxes/Kconfig b/drivers/i2c/muxes/Kconfig
index 1708b1a82da2..d9cb15cfba3e 100644
--- a/drivers/i2c/muxes/Kconfig
+++ b/drivers/i2c/muxes/Kconfig
@@ -77,7 +77,6 @@ config I2C_MUX_PCA954x
 config I2C_MUX_PINCTRL
 	tristate "pinctrl-based I2C multiplexer"
 	depends on PINCTRL
-	depends on OF || COMPILE_TEST
 	help
 	  If you say yes to this option, support will be included for an I2C
 	  multiplexer that uses the pinctrl subsystem, i.e. pin multiplexing.
diff --git a/drivers/i2c/muxes/i2c-mux-pinctrl.c b/drivers/i2c/muxes/i2c-mux-pinctrl.c
index f1bb00a11ad6..d9c0241e8790 100644
--- a/drivers/i2c/muxes/i2c-mux-pinctrl.c
+++ b/drivers/i2c/muxes/i2c-mux-pinctrl.c
@@ -53,19 +53,20 @@ static struct i2c_adapter *i2c_mux_pinctrl_root_adapter(
 
 static struct i2c_adapter *i2c_mux_pinctrl_parent_adapter(struct device *dev)
 {
-	struct device_node *np = dev->of_node;
-	struct device_node *parent_np;
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
+	struct fwnode_handle *parent_fwnode;
 	struct i2c_adapter *parent;
 
-	parent_np = of_parse_phandle(np, "i2c-parent", 0);
-	if (!parent_np) {
+	parent_fwnode = fwnode_find_reference(fwnode, "i2c-parent", 0);
+	if (!parent_fwnode) {
 		dev_err(dev, "Cannot parse i2c-parent\n");
 		return ERR_PTR(-ENODEV);
 	}
-	parent = of_find_i2c_adapter_by_node(parent_np);
-	of_node_put(parent_np);
-	if (!parent)
+	parent = fwnode_find_i2c_adapter_by_node(parent_fwnode);
+	if (!parent) {
+		dev_err(dev, "Cannot find i2c-parent\n");
 		return ERR_PTR(-EPROBE_DEFER);
+	}
 
 	return parent;
 }
@@ -73,7 +74,7 @@ static struct i2c_adapter *i2c_mux_pinctrl_parent_adapter(struct device *dev)
 static int i2c_mux_pinctrl_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct device_node *np = dev->of_node;
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
 	struct i2c_mux_core *muxc;
 	struct i2c_mux_pinctrl *mux;
 	struct i2c_adapter *parent;
@@ -81,7 +82,7 @@ static int i2c_mux_pinctrl_probe(struct platform_device *pdev)
 	int num_names, i, ret;
 	const char *name;
 
-	num_names = of_property_count_strings(np, "pinctrl-names");
+	num_names = fwnode_property_string_array_count(fwnode, "pinctrl-names");
 	if (num_names < 0) {
 		dev_err(dev, "Cannot parse pinctrl-names: %d\n",
 			num_names);
@@ -111,8 +112,8 @@ static int i2c_mux_pinctrl_probe(struct platform_device *pdev)
 	}
 
 	for (i = 0; i < num_names; i++) {
-		ret = of_property_read_string_index(np, "pinctrl-names", i,
-						    &name);
+		ret = fwnode_property_read_string_index(fwnode, "pinctrl-names", i,
+							&name);
 		if (ret < 0) {
 			dev_err(dev, "Cannot parse pinctrl-names: %d\n", ret);
 			goto err_put_parent;
-- 
2.34.1