[PATCH v2 4/6] net: dsa: introduce a .port_probe() method in struct dsa_ops

[Vladimir Oltean]

Some drivers might want to execute code for each port at probe time, as
opposed to executing code just-in-time for the port selected for
networking.

To cater to that use case, introduce a .port_probe() callback method
into the DSA switch operations which is called for each available port,
at the end of dsa_port_probe().

Signed-off-by: Vladimir Oltean <vladimir.oltean at nxp.com>
Reviewed-by: Ramon Fried <rfried.dev at gmail.com>
Tested-by: Michael Walle <michael at walle.cc>
---
 include/net/dsa.h | 5 ++++-
 net/dsa-uclass.c  | 8 ++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 0f31a908c9d1..ab2a9dfbea2d 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -57,7 +57,8 @@
 /**
  * struct dsa_ops - DSA operations
  *
- * @port_enable:  Initialize a switch port for I/O.
+ * @port_probe:   Initialize a switch port.
+ * @port_enable:  Enable I/O for a port.
  * @port_disable: Disable I/O for a port.
  * @xmit:         Insert the DSA tag for transmission.
  *                DSA drivers receive a copy of the packet with headroom and
@@ -69,6 +70,8 @@
  *                master including any additional headers.
  */
 struct dsa_ops {
+	int (*port_probe)(struct udevice *dev, int port,
+			  struct phy_device *phy);
 	int (*port_enable)(struct udevice *dev, int port,
 			   struct phy_device *phy);
 	void (*port_disable)(struct udevice *dev, int port,
diff --git a/net/dsa-uclass.c b/net/dsa-uclass.c
index dbd8558b6486..9b8ae1e82b92 100644
--- a/net/dsa-uclass.c
+++ b/net/dsa-uclass.c
@@ -270,6 +270,7 @@ static void dsa_port_set_hwaddr(struct udevice *pdev, struct udevice *master)
 static int dsa_port_probe(struct udevice *pdev)
 {
 	struct udevice *dev = dev_get_parent(pdev);
+	struct dsa_ops *ops = dsa_get_ops(dev);
 	struct dsa_port_pdata *port_pdata;
 	struct dsa_priv *dsa_priv;
 	struct udevice *master;
@@ -299,6 +300,13 @@ static int dsa_port_probe(struct udevice *pdev)
 
 	dsa_port_set_hwaddr(pdev, master);
 
+	if (ops->port_probe) {
+		err = ops->port_probe(dev, port_pdata->index,
+				      port_pdata->phy);
+		if (err)
+			return err;
+	}
+
 	return 0;
 }
 
-- 
2.25.1