[PATCH 6/6] net: mvpp2: convert FDT access to ofnode API

["Peng Fan (OSS)" <peng.fan@oss.nxp.com>]

From: Peng Fan <peng.fan@nxp.com>

Convert mvpp2 driver from legacy fdtdec/fdt_* APIs to the ofnode-based
interfaces.

Replace usage of dev_of_offset(), fdtdec_lookup_phandle(),
fdtdec_get_int(), fdt_parent_offset(), and related helpers with their
ofnode equivalents, including dev_ofnode(), ofnode_parse_phandle(),
ofnode_read_s32_default(), ofnode_get_parent(), and
ofnode_for_each_subnode().

Remove direct dependencies on gd->fdt_blob.

Main changes:
- Use ofnode_valid() instead of integer checks for node presence
- Switch fixed-link detection to ofnode_find_subnode()
- Replace uclass_get_device_by_of_offset() with
  uclass_get_device_by_ofnode()
- Update subnode iteration and device binding to use ofnode

No functional changes.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/net/mvpp2.c | 54 ++++++++++++++++++++++++++---------------------------
 1 file changed, 27 insertions(+), 27 deletions(-)

diff --git a/drivers/net/mvpp2.c b/drivers/net/mvpp2.c
index 193f82ea07d..27f785163ba 100644
--- a/drivers/net/mvpp2.c
+++ b/drivers/net/mvpp2.c
@@ -4731,33 +4731,34 @@ static int mvpp2_port_init(struct udevice *dev, struct mvpp2_port *port)
 
 static int phy_info_parse(struct udevice *dev, struct mvpp2_port *port)
 {
-	int port_node = dev_of_offset(dev);
-	int phy_node;
+	ofnode port_node = dev_ofnode(dev);
+	ofnode phy_node;
 	u32 id;
 	int phyaddr = 0;
-	int fixed_link = 0;
+	ofnode fixed_link;
 	int ret;
 
-	phy_node = fdtdec_lookup_phandle(gd->fdt_blob, port_node, "phy");
-	fixed_link = fdt_subnode_offset(gd->fdt_blob, port_node, "fixed-link");
+	phy_node = ofnode_parse_phandle(port_node, "phy", 0);
+	fixed_link = ofnode_find_subnode(port_node, "fixed-link");
 
-	if (phy_node > 0) {
-		int parent;
+	if (ofnode_valid(phy_node)) {
+		ofnode parent;
 
-		if (fixed_link != -FDT_ERR_NOTFOUND) {
+		if (ofnode_valid(fixed_link)) {
 			/* phy_addr is set to invalid value for fixed links */
 			phyaddr = PHY_MAX_ADDR;
 		} else {
-			phyaddr = fdtdec_get_int(gd->fdt_blob, phy_node,
-						 "reg", 0);
+			phyaddr = ofnode_read_s32_default(phy_node, "reg", 0);
 			if (phyaddr < 0) {
 				dev_err(dev, "could not find phy address\n");
 				return -1;
 			}
 		}
-		parent = fdt_parent_offset(gd->fdt_blob, phy_node);
-		ret = uclass_get_device_by_of_offset(UCLASS_MDIO, parent,
-						     &port->mdio_dev);
+		parent = ofnode_get_parent(phy_node);
+		if (!ofnode_valid(parent))
+			return -ENODEV;
+		ret = uclass_get_device_by_ofnode(UCLASS_MDIO, parent,
+						  &port->mdio_dev);
 		if (ret)
 			return ret;
 	} else {
@@ -4771,7 +4772,7 @@ static int phy_info_parse(struct udevice *dev, struct mvpp2_port *port)
 		return -EINVAL;
 	}
 
-	id = fdtdec_get_int(gd->fdt_blob, port_node, "port-id", -1);
+	id = dev_read_s32_default(dev, "port-id", -1);
 	if (id == -1) {
 		dev_err(dev, "missing port-id value\n");
 		return -EINVAL;
@@ -4812,7 +4813,7 @@ static void mvpp2_gpio_init(struct mvpp2_port *port)
 /* Ports initialization */
 static int mvpp2_port_probe(struct udevice *dev,
 			    struct mvpp2_port *port,
-			    int port_node,
+			    ofnode port_node,
 			    struct mvpp2 *priv)
 {
 	int err;
@@ -5350,8 +5351,7 @@ static int mvpp2_probe(struct udevice *dev)
 		if (!port->base)
 			return -EINVAL;
 	} else {
-		port->gop_id = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
-					      "gop-port-id", -1);
+		port->gop_id = ofnode_read_s32_default(dev_ofnode(dev), "gop-port-id", -1);
 		if (port->gop_id == -1) {
 			dev_err(dev, "missing gop-port-id value\n");
 			return -EINVAL;
@@ -5375,7 +5375,7 @@ static int mvpp2_probe(struct udevice *dev)
 		priv->probe_done = 1;
 	}
 
-	err = mvpp2_port_probe(dev, port, dev_of_offset(dev), priv);
+	err = mvpp2_port_probe(dev, port, dev_ofnode(dev), priv);
 	if (err)
 		return err;
 
@@ -5436,15 +5436,14 @@ static struct driver mvpp2_driver = {
  */
 static int mvpp2_base_bind(struct udevice *parent)
 {
-	const void *blob = gd->fdt_blob;
-	int node = dev_of_offset(parent);
+	ofnode node = dev_ofnode(parent);
 	struct uclass_driver *drv;
 	struct udevice *dev;
 	struct eth_pdata *plat;
 	char *name;
-	int subnode;
+	ofnode subnode;
 	u32 id;
-	int base_id_add;
+	int base_id_add, ret;
 
 	/* Lookup eth driver */
 	drv = lists_uclass_lookup(UCLASS_ETH);
@@ -5455,19 +5454,19 @@ static int mvpp2_base_bind(struct udevice *parent)
 
 	base_id_add = base_id;
 
-	fdt_for_each_subnode(subnode, blob, node) {
+	dev_for_each_subnode(subnode, parent) {
 		/* Increment base_id for all subnodes, also the disabled ones */
 		base_id++;
 
 		/* Skip disabled ports */
-		if (!fdtdec_get_is_enabled(blob, subnode))
+		if (!ofnode_is_enabled(subnode))
 			continue;
 
 		plat = calloc(1, sizeof(*plat));
 		if (!plat)
 			return -ENOMEM;
 
-		id = fdtdec_get_int(blob, subnode, "port-id", -1);
+		id = ofnode_read_s32_default(subnode, "port-id", -1);
 		id += base_id_add;
 
 		name = calloc(1, 16);
@@ -5478,8 +5477,9 @@ static int mvpp2_base_bind(struct udevice *parent)
 		sprintf(name, "mvpp2-%d", id);
 
 		/* Create child device UCLASS_ETH and bind it */
-		device_bind(parent, &mvpp2_driver, name, plat,
-			    offset_to_ofnode(subnode), &dev);
+		ret = device_bind(parent, &mvpp2_driver, name, plat, subnode, &dev);
+		if (ret)
+			return ret;
 	}
 
 	return 0;

-- 
2.51.0