netdev - [net-next: PATCH v3 8/8] net: dsa: mv88e6xxx: switch to device_/fwnode

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Message-Id: <20220727064321.2953971-9-mw@semihalf.com>
Date:   Wed, 27 Jul 2022 08:43:21 +0200
From:   Marcin Wojtas <mw@...ihalf.com>
To:     linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        netdev@...r.kernel.org
Cc:     rafael@...nel.org, andriy.shevchenko@...ux.intel.com,
        sean.wang@...iatek.com, Landen.Chao@...iatek.com,
        linus.walleij@...aro.org, andrew@...n.ch, vivien.didelot@...il.com,
        f.fainelli@...il.com, olteanv@...il.com, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        linux@...linux.org.uk, hkallweit1@...il.com, gjb@...ihalf.com,
        mw@...ihalf.com, jaz@...ihalf.com, tn@...ihalf.com,
        Samer.El-Haj-Mahmoud@....com, upstream@...ihalf.com
Subject: [net-next: PATCH v3 8/8] net: dsa: mv88e6xxx: switch to device_/fwnode_ APIs

In order to support both DT and ACPI in future, modify the
mv88e6xx driver  code to use device_/fwnode_ equivalent routines.
No functional change is introduced by this patch.

Signed-off-by: Marcin Wojtas <mw@...ihalf.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 43 +++++++++-----------
 1 file changed, 20 insertions(+), 23 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index a46ebdfba1c3..e7848b56316f 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -3891,10 +3891,11 @@ static int mv88e6xxx_mdio_write(struct mii_bus *bus, int phy, int reg, u16 val)
 }
 
 static int mv88e6xxx_mdio_register(struct mv88e6xxx_chip *chip,
-				   struct device_node *np,
+				   struct fwnode_handle *fwnode,
 				   bool external)
 {
 	static int index;
+	struct device_node *np = to_of_node(fwnode);
 	struct mv88e6xxx_mdio_bus *mdio_bus;
 	struct mii_bus *bus;
 	int err;
@@ -3973,18 +3974,18 @@ static void mv88e6xxx_mdios_unregister(struct mv88e6xxx_chip *chip)
 }
 
 static int mv88e6xxx_mdios_register(struct mv88e6xxx_chip *chip,
-				    struct device_node *np)
+				    struct fwnode_handle *fwnode)
 {
-	struct device_node *child;
+	struct fwnode_handle *child;
 	int err;
 
 	/* Always register one mdio bus for the internal/default mdio
 	 * bus. This maybe represented in the device tree, but is
 	 * optional.
 	 */
-	child = of_get_child_by_name(np, "mdio");
+	child = fwnode_get_named_child_node(fwnode, "mdio");
 	err = mv88e6xxx_mdio_register(chip, child, false);
-	of_node_put(child);
+	fwnode_handle_put(child);
 	if (err)
 		return err;
 
@@ -3992,13 +3993,13 @@ static int mv88e6xxx_mdios_register(struct mv88e6xxx_chip *chip,
 	 * which say they are compatible with the external mdio
 	 * bus.
 	 */
-	for_each_available_child_of_node(np, child) {
-		if (of_device_is_compatible(
-			    child, "marvell,mv88e6xxx-mdio-external")) {
+	fwnode_for_each_available_child_node(fwnode, child) {
+		if (fwnode_property_match_string(child, "compatible",
+						 "marvell,mv88e6xxx-mdio-external") == 0) {
 			err = mv88e6xxx_mdio_register(chip, child, true);
 			if (err) {
 				mv88e6xxx_mdios_unregister(chip);
-				of_node_put(child);
+				fwnode_handle_put(child);
 				return err;
 			}
 		}
@@ -6984,20 +6985,16 @@ static SIMPLE_DEV_PM_OPS(mv88e6xxx_pm_ops, mv88e6xxx_suspend, mv88e6xxx_resume);
 static int mv88e6xxx_probe(struct mdio_device *mdiodev)
 {
 	struct dsa_mv88e6xxx_pdata *pdata = mdiodev->dev.platform_data;
+	struct fwnode_handle *fwnode = dev_fwnode(&mdiodev->dev);
 	const struct mv88e6xxx_info *compat_info = NULL;
 	struct device *dev = &mdiodev->dev;
-	struct device_node *np = dev->of_node;
 	struct mv88e6xxx_chip *chip;
 	int port;
 	int err;
 
-	if (!np && !pdata)
-		return -EINVAL;
-
-	if (np)
-		compat_info = of_device_get_match_data(dev);
-
-	if (pdata) {
+	if (fwnode)
+		compat_info = device_get_match_data(dev);
+	else if (pdata) {
 		compat_info = pdata_device_get_match_data(dev);
 
 		if (!pdata->netdev)
@@ -7054,9 +7051,9 @@ static int mv88e6xxx_probe(struct mdio_device *mdiodev)
 	mv88e6xxx_phy_init(chip);
 
 	if (chip->info->ops->get_eeprom) {
-		if (np)
-			of_property_read_u32(np, "eeprom-length",
-					     &chip->eeprom_len);
+		if (fwnode)
+			device_property_read_u32(dev, "eeprom-length",
+						 &chip->eeprom_len);
 		else
 			chip->eeprom_len = pdata->eeprom_len;
 	}
@@ -7067,8 +7064,8 @@ static int mv88e6xxx_probe(struct mdio_device *mdiodev)
 	if (err)
 		goto out;
 
-	if (np) {
-		chip->irq = of_irq_get(np, 0);
+	if (fwnode) {
+		chip->irq = fwnode_irq_get(fwnode, 0);
 		if (chip->irq == -EPROBE_DEFER) {
 			err = chip->irq;
 			goto out;
@@ -7106,7 +7103,7 @@ static int mv88e6xxx_probe(struct mdio_device *mdiodev)
 	if (err)
 		goto out_g1_atu_prob_irq;
 
-	err = mv88e6xxx_mdios_register(chip, np);
+	err = mv88e6xxx_mdios_register(chip, fwnode);
 	if (err)
 		goto out_g1_vtu_prob_irq;
 
-- 
2.29.0