> From: "Russell King (Oracle)" <rmk+kernel@xxxxxxxxxxxxxxx>
>
> Introduce a mechanism whereby platforms can create their PCS instances
> prior to the network device being published to userspace, but after some of
> the core stmmac initialisation has been completed. This means that the data
> structures that platforms need will be available.
>
> Signed-off-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
> Reviewed-by: Maxime Chevallier <maxime.chevallier@xxxxxxxxxxx>
> Reviewed-by: Serge Semin <fancer.lancer@xxxxxxxxx>
> Co-developed-by: Romain Gantois <romain.gantois@xxxxxxxxxxx>
> Signed-off-by: Romain Gantois <romain.gantois@xxxxxxxxxxx>
> ---
> drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 8 +++++++-
> include/linux/stmmac.h | 2 ++
> 2 files changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> index 54708440e27b8..aa43117134d38 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> @@ -505,7 +505,10 @@ int stmmac_pcs_setup(struct net_device *ndev)
> priv = netdev_priv(ndev);
> mode = priv->plat->phy_interface;
>
> - if (priv->plat->mdio_bus_data && priv->plat->mdio_bus_data-
> >has_xpcs) {
> + if (priv->plat->pcs_init) {
> + ret = priv->plat->pcs_init(priv);
> + } else if (priv->plat->mdio_bus_data &&
> + priv->plat->mdio_bus_data->has_xpcs) {
> /* Try to probe the XPCS by scanning all addresses */
> for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
> xpcs = xpcs_create_mdiodev(priv->mii, addr, mode);
> @@ -533,6 +536,9 @@ void stmmac_pcs_clean(struct net_device *ndev) {
> struct stmmac_priv *priv = netdev_priv(ndev);
>
> + if (priv->plat->pcs_exit)
> + priv->plat->pcs_exit(priv);
> +
> if (!priv->hw->xpcs)
> return;
>
> diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index
> dfa1828cd756a..4a24a246c617d 100644
> --- a/include/linux/stmmac.h
> +++ b/include/linux/stmmac.h
> @@ -285,6 +285,8 @@ struct plat_stmmacenet_data {
> int (*crosststamp)(ktime_t *device, struct system_counterval_t
> *system,
> void *ctx);
> void (*dump_debug_regs)(void *priv);
> + int (*pcs_init)(struct stmmac_priv *priv);
> + void (*pcs_exit)(struct stmmac_priv *priv);
> void *bsp_priv;
> struct clk *stmmac_clk;
> struct clk *pclk;
>
> --
> 2.44.0
>
Reviewed-by: Hariprasad Kelam <hkelam@xxxxxxxxxxx>
