Merge branch 'dpaa2-eth-of_node'

Ioana Ciornei says:

====================
dpaa2-eth: setup the of_node

This patch set allows DSA to work with a DPAA2 master device by setting
up the of_node to point to the corresponding MAC DTS node, so that
of_find_net_device_by_node() can find it.
As an added benefit, udev rules can now be used to create a naming
scheme based on the physical MAC.

The second patch renames the debugfs directory to use the DPNI name
instead of the netdev name, since the latter can be changed after probe
time.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 19 insertions, 13 deletions

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c
index b87db0846e10..8356af4631fd 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c
@@ -121,10 +121,14 @@ DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_ch);
 
 void dpaa2_dbg_add(struct dpaa2_eth_priv *priv)
 {
+	struct fsl_mc_device *dpni_dev;
 	struct dentry *dir;
+	char name[10];
 
 	/* Create a directory for the interface */
-	dir = debugfs_create_dir(priv->net_dev->name, dpaa2_dbg_root);
+	dpni_dev = to_fsl_mc_device(priv->net_dev->dev.parent);
+	snprintf(name, 10, "dpni.%d", dpni_dev->obj_desc.id);
+	dir = debugfs_create_dir(name, dpaa2_dbg_root);
 	priv->dbg.dir = dir;
 
 	/* per-cpu stats file */
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
index ccaf7e35abeb..4dfadf2b70d6 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
@@ -289,17 +289,15 @@ int dpaa2_mac_connect(struct dpaa2_mac *mac)
 
 	mac->if_link_type = mac->attr.link_type;
 
-	dpmac_node = dpaa2_mac_get_node(mac->attr.id);
+	dpmac_node = mac->of_node;
 	if (!dpmac_node) {
 		netdev_err(net_dev, "No dpmac@%d node found.\n", mac->attr.id);
 		return -ENODEV;
 	}
 
 	err = dpaa2_mac_get_if_mode(dpmac_node, mac->attr);
-	if (err < 0) {
-		err = -EINVAL;
-		goto err_put_node;
-	}
+	if (err < 0)
+		return -EINVAL;
 	mac->if_mode = err;
 
 	/* The MAC does not have the capability to add RGMII delays so
@@ -311,8 +309,7 @@ int dpaa2_mac_connect(struct dpaa2_mac *mac)
 	     mac->if_mode == PHY_INTERFACE_MODE_RGMII_RXID ||
 	     mac->if_mode == PHY_INTERFACE_MODE_RGMII_TXID)) {
 		netdev_err(net_dev, "RGMII delay not supported\n");
-		err = -EINVAL;
-		goto err_put_node;
+		return -EINVAL;
 	}
 
 	if ((mac->attr.link_type == DPMAC_LINK_TYPE_PHY &&
@@ -320,7 +317,7 @@ int dpaa2_mac_connect(struct dpaa2_mac *mac)
 	    mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE) {
 		err = dpaa2_pcs_create(mac, dpmac_node, mac->attr.id);
 		if (err)
-			goto err_put_node;
+			return err;
 	}
 
 	mac->phylink_config.dev = &net_dev->dev;
@@ -344,16 +341,12 @@ int dpaa2_mac_connect(struct dpaa2_mac *mac)
 		goto err_phylink_destroy;
 	}
 
-	of_node_put(dpmac_node);
-
 	return 0;
 
 err_phylink_destroy:
 	phylink_destroy(mac->phylink);
 err_pcs_destroy:
 	dpaa2_pcs_destroy(mac);
-err_put_node:
-	of_node_put(dpmac_node);
 
 	return err;
 }
@@ -388,6 +381,12 @@ int dpaa2_mac_open(struct dpaa2_mac *mac)
 		goto err_close_dpmac;
 	}
 
+	/* Find the device node representing the MAC device and link the device
+	 * behind the associated netdev to it.
+	 */
+	mac->of_node = dpaa2_mac_get_node(mac->attr.id);
+	net_dev->dev.of_node = mac->of_node;
+
 	return 0;
 
 err_close_dpmac:
@@ -400,6 +399,8 @@ void dpaa2_mac_close(struct dpaa2_mac *mac)
 	struct fsl_mc_device *dpmac_dev = mac->mc_dev;
 
 	dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
+	if (mac->of_node)
+		of_node_put(mac->of_node);
 }
 
 static char dpaa2_mac_ethtool_stats[][ETH_GSTRING_LEN] = {
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h
index 13d42dd58ec9..8ebcb3420d02 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h
@@ -24,6 +24,7 @@ struct dpaa2_mac {
 	phy_interface_t if_mode;
 	enum dpmac_link_type if_link_type;
 	struct lynx_pcs *pcs;
+	struct device_node *of_node;
 };
 
 bool dpaa2_mac_is_type_fixed(struct fsl_mc_device *dpmac_dev,