diff options
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 16 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 19 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 84 | ||||
| -rw-r--r-- | include/linux/stmmac.h | 2 |
4 files changed, 73 insertions, 48 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 4c5ce9848ca9..78464fa7fe1f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -278,7 +278,6 @@ static void stmmac_eee_ctrl_timer(unsigned long arg) */ bool stmmac_eee_init(struct stmmac_priv *priv) { - char *phy_bus_name = priv->plat->phy_bus_name; unsigned long flags; bool ret = false; @@ -290,7 +289,7 @@ bool stmmac_eee_init(struct stmmac_priv *priv) goto out; /* Never init EEE in case of a switch is attached */ - if (phy_bus_name && (!strcmp(phy_bus_name, "fixed"))) + if (priv->phydev->is_pseudo_fixed_link) goto out; /* MAC core supports the EEE feature. */ @@ -827,12 +826,8 @@ static int stmmac_init_phy(struct net_device *dev) phydev = of_phy_connect(dev, priv->plat->phy_node, &stmmac_adjust_link, 0, interface); } else { - if (priv->plat->phy_bus_name) - snprintf(bus_id, MII_BUS_ID_SIZE, "%s-%x", - priv->plat->phy_bus_name, priv->plat->bus_id); - else - snprintf(bus_id, MII_BUS_ID_SIZE, "stmmac-%x", - priv->plat->bus_id); + snprintf(bus_id, MII_BUS_ID_SIZE, "stmmac-%x", + priv->plat->bus_id); snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, bus_id, priv->plat->phy_addr); @@ -871,9 +866,8 @@ static int stmmac_init_phy(struct net_device *dev) } /* If attached to a switch, there is no reason to poll phy handler */ - if (priv->plat->phy_bus_name) - if (!strcmp(priv->plat->phy_bus_name, "fixed")) - phydev->irq = PHY_IGNORE_INTERRUPT; + if (phydev->is_pseudo_fixed_link) + phydev->irq = PHY_IGNORE_INTERRUPT; pr_debug("stmmac_init_phy: %s: attached to PHY (UID 0x%x)" " Link = %d\n", dev->name, phydev->phy_id, phydev->link); diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c index af09ced53bd8..06704ca6f9ca 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c @@ -198,29 +198,12 @@ int stmmac_mdio_register(struct net_device *ndev) struct mii_bus *new_bus; struct stmmac_priv *priv = netdev_priv(ndev); struct stmmac_mdio_bus_data *mdio_bus_data = priv->plat->mdio_bus_data; + struct device_node *mdio_node = priv->plat->mdio_node; int addr, found; - struct device_node *mdio_node = NULL; - struct device_node *child_node = NULL; if (!mdio_bus_data) return 0; - if (IS_ENABLED(CONFIG_OF)) { - for_each_child_of_node(priv->device->of_node, child_node) { - if (of_device_is_compatible(child_node, - "snps,dwmac-mdio")) { - mdio_node = child_node; - break; - } - } - - if (mdio_node) { - netdev_dbg(ndev, "FOUND MDIO subnode\n"); - } else { - netdev_warn(ndev, "No MDIO subnode found\n"); - } - } - new_bus = mdiobus_alloc(); if (new_bus == NULL) return -ENOMEM; diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index 9cf181f839fd..cf37ea558ecc 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -132,6 +132,69 @@ static struct stmmac_axi *stmmac_axi_setup(struct platform_device *pdev) } /** + * stmmac_dt_phy - parse device-tree driver parameters to allocate PHY resources + * @plat: driver data platform structure + * @np: device tree node + * @dev: device pointer + * Description: + * The mdio bus will be allocated in case of a phy transceiver is on board; + * it will be NULL if the fixed-link is configured. + * If there is the "snps,dwmac-mdio" sub-node the mdio will be allocated + * in any case (for DSA, mdio must be registered even if fixed-link). + * The table below sums the supported configurations: + * ------------------------------- + * snps,phy-addr | Y + * ------------------------------- + * phy-handle | Y + * ------------------------------- + * fixed-link | N + * ------------------------------- + * snps,dwmac-mdio | + * even if | Y + * fixed-link | + * ------------------------------- + * + * It returns 0 in case of success otherwise -ENODEV. + */ +static int stmmac_dt_phy(struct plat_stmmacenet_data *plat, + struct device_node *np, struct device *dev) +{ + bool mdio = true; + + /* If phy-handle property is passed from DT, use it as the PHY */ + plat->phy_node = of_parse_phandle(np, "phy-handle", 0); + if (plat->phy_node) + dev_dbg(dev, "Found phy-handle subnode\n"); + + /* If phy-handle is not specified, check if we have a fixed-phy */ + if (!plat->phy_node && of_phy_is_fixed_link(np)) { + if ((of_phy_register_fixed_link(np) < 0)) + return -ENODEV; + + dev_dbg(dev, "Found fixed-link subnode\n"); + plat->phy_node = of_node_get(np); + mdio = false; + } + + /* If snps,dwmac-mdio is passed from DT, always register the MDIO */ + for_each_child_of_node(np, plat->mdio_node) { + if (of_device_is_compatible(plat->mdio_node, "snps,dwmac-mdio")) + break; + } + + if (plat->mdio_node) { + dev_dbg(dev, "Found MDIO subnode\n"); + mdio = true; + } + + if (mdio) + plat->mdio_bus_data = + devm_kzalloc(dev, sizeof(struct stmmac_mdio_bus_data), + GFP_KERNEL); + return 0; +} + +/** * stmmac_probe_config_dt - parse device-tree driver parameters * @pdev: platform_device structure * @plat: driver data platform structure @@ -165,30 +228,15 @@ stmmac_probe_config_dt(struct platform_device *pdev, const char **mac) /* Default to phy auto-detection */ plat->phy_addr = -1; - /* If we find a phy-handle property, use it as the PHY */ - plat->phy_node = of_parse_phandle(np, "phy-handle", 0); - - /* If phy-handle is not specified, check if we have a fixed-phy */ - if (!plat->phy_node && of_phy_is_fixed_link(np)) { - if ((of_phy_register_fixed_link(np) < 0)) - return ERR_PTR(-ENODEV); - - plat->phy_node = of_node_get(np); - } - /* "snps,phy-addr" is not a standard property. Mark it as deprecated * and warn of its use. Remove this when phy node support is added. */ if (of_property_read_u32(np, "snps,phy-addr", &plat->phy_addr) == 0) dev_warn(&pdev->dev, "snps,phy-addr property is deprecated\n"); - if ((plat->phy_node && !of_phy_is_fixed_link(np)) || plat->phy_bus_name) - plat->mdio_bus_data = NULL; - else - plat->mdio_bus_data = - devm_kzalloc(&pdev->dev, - sizeof(struct stmmac_mdio_bus_data), - GFP_KERNEL); + /* To Configure PHY by using all device-tree supported properties */ + if (stmmac_dt_phy(plat, np, &pdev->dev)) + return ERR_PTR(-ENODEV); of_property_read_u32(np, "tx-fifo-depth", &plat->tx_fifo_size); diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index 6e53fa8942a4..e6bc30a42a74 100644 --- a/include/linux/stmmac.h +++ b/include/linux/stmmac.h @@ -108,12 +108,12 @@ struct stmmac_axi { }; struct plat_stmmacenet_data { - char *phy_bus_name; int bus_id; int phy_addr; int interface; struct stmmac_mdio_bus_data *mdio_bus_data; struct device_node *phy_node; + struct device_node *mdio_node; struct stmmac_dma_cfg *dma_cfg; int clk_csr; int has_gmac; |