[PATCH 01/21] net-next: stmmac add optional init_phy function

[Corentin Labbe]

For dwmac-sun8i, some actions must be done for enabling attached PHY.
Thoses actions must be done after stmmac_probe_config_dt() and
at start of stmmac_init_phy().

The best way to handle that is to add an optional init_phy() function.

Signed-off-by: Corentin Labbe <clabbe.montj...@gmail.com>
---
 drivers/net/ethernet/stmicro/stmmac/common.h      |  3 +++
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 11 +++++++++++
 2 files changed, 14 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h 
b/drivers/net/ethernet/stmicro/stmmac/common.h
index 144fe84..daaafa9 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -483,6 +483,9 @@ struct stmmac_ops {
                             bool loopback);
        void (*pcs_rane)(void __iomem *ioaddr, bool restart);
        void (*pcs_get_adv_lp)(void __iomem *ioaddr, struct rgmii_adv *adv);
+       /* optional function for powering/init PHY */
+       int (*init_phy)(struct net_device *ndev);
+       void (*uninit_phy)(struct net_device *ndev);
 };
 
 /* PTP and HW Timer helpers */
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c 
b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 3cbe096..942efb7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -820,10 +820,18 @@ static int stmmac_init_phy(struct net_device *dev)
        char bus_id[MII_BUS_ID_SIZE];
        int interface = priv->plat->interface;
        int max_speed = priv->plat->max_speed;
+       int ret;
+
        priv->oldlink = 0;
        priv->speed = SPEED_UNKNOWN;
        priv->oldduplex = DUPLEX_UNKNOWN;
 
+       if (priv->hw->mac->init_phy) {
+               ret = priv->hw->mac->init_phy(dev);
+               if (ret)
+                       return ret;
+       }
+
        if (priv->plat->phy_node) {
                phydev = of_phy_connect(dev, priv->plat->phy_node,
                                        &stmmac_adjust_link, 0, interface);
@@ -1892,6 +1900,9 @@ static int stmmac_release(struct net_device *dev)
                phy_disconnect(dev->phydev);
        }
 
+       if (priv->hw->mac->uninit_phy)
+               priv->hw->mac->uninit_phy(dev);
+
        netif_stop_queue(dev);
 
        napi_disable(&priv->napi);
-- 
2.10.2