Subject: [PATCH net-next 6/8] net: stmmac: provide the link_up() callback

From: Bartosz Golaszewski <[email-masked]>
Date: Wed, 19 Jun 2024 20:45:47 +0200

From: Bartosz Golaszewski <[email-masked]>

Provide drivers with means to react to link-up events in the form of
another platform callback.

Signed-off-by: Bartosz Golaszewski <[email-masked]>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 3 +++
 include/linux/stmmac.h                            | 1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 5ddbb0d44373..644bc8a24661 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1006,6 +1006,9 @@ static void stmmac_mac_link_up(struct phylink_config *config,
 	struct stmmac_priv *priv = netdev_priv(to_net_dev(config->dev));
 	u32 old_ctrl, ctrl;
 
+	if (priv->plat->link_up)
+		priv->plat->link_up(priv->dev, priv->plat->bsp_priv);
+
 	if ((priv->plat->flags & STMMAC_FLAG_SERDES_UP_AFTER_PHY_LINKUP) &&
 	    priv->plat->serdes_powerup)
 		priv->plat->serdes_powerup(priv->dev, priv->plat->bsp_priv);
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index 9c54f82901a1..9dc54d6d65ae 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -271,6 +271,7 @@ struct plat_stmmacenet_data {
 	void (*dump_debug_regs)(void *priv);
 	int (*pcs_init)(struct stmmac_priv *priv);
 	void (*pcs_exit)(struct stmmac_priv *priv);
+	void (*link_up)(struct net_device *ndev, void *priv);
 	struct phylink_pcs *(*select_pcs)(struct stmmac_priv *priv,
 					  phy_interface_t interface);
 	void *bsp_priv;
-- 
2.43.0