net: phy: add devm/of_phy_package_join helper

Add devm/of_phy_package_join helper to join PHYs in a PHY package. These
are variant of the manual phy_package_join with the difference that
these will use DT nodes to derive the base_addr instead of manually
passing an hardcoded value.

An additional value is added in phy_package_shared, "np" to reference
the PHY package node pointer in specific PHY driver probe_once and
config_init_once functions to make use of additional specific properties
defined in the PHY package node in DT.

The np value is filled only with of_phy_package_join if a valid PHY
package node is found. A valid PHY package node must have the node name
set to "ethernet-phy-package".

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/phy.h b/include/linux/phy.h
index fd8dbea9b4d9..cbd49418b819 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -329,6 +329,7 @@ struct mdio_bus_stats {
  * struct phy_package_shared - Shared information in PHY packages
  * @base_addr: Base PHY address of PHY package used to combine PHYs
  *   in one package and for offset calculation of phy_package_read/write
+ * @np: Pointer to the Device Node if PHY package defined in DT
  * @refcnt: Number of PHYs connected to this shared data
  * @flags: Initialization of PHY package
  * @priv_size: Size of the shared private data @priv
@@ -340,6 +341,8 @@ struct mdio_bus_stats {
  */
 struct phy_package_shared {
 	u8 base_addr;
+	/* With PHY package defined in DT this points to the PHY package node */
+	struct device_node *np;
 	refcount_t refcnt;
 	unsigned long flags;
 	size_t priv_size;
@@ -2000,9 +2003,12 @@ int phy_ethtool_set_link_ksettings(struct net_device *ndev,
 				   const struct ethtool_link_ksettings *cmd);
 int phy_ethtool_nway_reset(struct net_device *ndev);
 int phy_package_join(struct phy_device *phydev, int base_addr, size_t priv_size);
+int of_phy_package_join(struct phy_device *phydev, size_t priv_size);
 void phy_package_leave(struct phy_device *phydev);
 int devm_phy_package_join(struct device *dev, struct phy_device *phydev,
 			  int base_addr, size_t priv_size);
+int devm_of_phy_package_join(struct device *dev, struct phy_device *phydev,
+			     size_t priv_size);
 
 int __init mdio_bus_init(void);
 void mdio_bus_exit(void);