diff options
| -rw-r--r-- | drivers/net/ethernet/broadcom/genet/bcmgenet.c | 62 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/genet/bcmmii.c | 81 | ||||
| -rw-r--r-- | drivers/net/phy/mdio_bus.c | 17 | ||||
| -rw-r--r-- | include/linux/phy.h | 1 |
4 files changed, 119 insertions, 42 deletions
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index e50a153..80feb20 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -7,6 +7,7 @@ #define pr_fmt(fmt) "bcmgenet: " fmt +#include <linux/acpi.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/sched.h> @@ -2771,6 +2772,21 @@ static void bcmgenet_set_hw_addr(struct bcmgenet_priv *priv, bcmgenet_umac_writel(priv, (addr[4] << 8) | addr[5], UMAC_MAC1); } +static void bcmgenet_get_hw_addr(struct bcmgenet_priv *priv, + unsigned char *addr) +{ + u32 addr_tmp; + + addr_tmp = bcmgenet_umac_readl(priv, UMAC_MAC0); + addr[0] = addr_tmp >> 24; + addr[1] = (addr_tmp >> 16) & 0xff; + addr[2] = (addr_tmp >> 8) & 0xff; + addr[3] = addr_tmp & 0xff; + addr_tmp = bcmgenet_umac_readl(priv, UMAC_MAC1); + addr[4] = (addr_tmp >> 8) & 0xff; + addr[5] = addr_tmp & 0xff; +} + /* Returns a reusable dma control register value */ static u32 bcmgenet_dma_disable(struct bcmgenet_priv *priv) { @@ -3466,10 +3482,8 @@ static int bcmgenet_probe(struct platform_device *pdev) const struct bcmgenet_plat_data *pdata; struct bcmgenet_priv *priv; struct net_device *dev; - const void *macaddr; unsigned int i; int err = -EIO; - const char *phy_mode_str; /* Up to GENET_MAX_MQ_CNT + 1 TX queues and RX queues */ dev = alloc_etherdev_mqs(sizeof(*priv), GENET_MAX_MQ_CNT + 1, @@ -3498,11 +3512,6 @@ static int bcmgenet_probe(struct platform_device *pdev) } priv->wol_irq = platform_get_irq_optional(pdev, 2); - if (dn) - macaddr = of_get_mac_address(dn); - else - macaddr = pd->mac_address; - priv->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(priv->base)) { err = PTR_ERR(priv->base); @@ -3513,12 +3522,6 @@ static int bcmgenet_probe(struct platform_device *pdev) SET_NETDEV_DEV(dev, &pdev->dev); dev_set_drvdata(&pdev->dev, dev); - if (IS_ERR_OR_NULL(macaddr) || !is_valid_ether_addr(macaddr)) { - dev_warn(&pdev->dev, "using random Ethernet MAC\n"); - eth_hw_addr_random(dev); - } else { - ether_addr_copy(dev->dev_addr, macaddr); - } dev->watchdog_timeo = 2 * HZ; dev->ethtool_ops = &bcmgenet_ethtool_ops; dev->netdev_ops = &bcmgenet_netdev_ops; @@ -3547,8 +3550,9 @@ static int bcmgenet_probe(struct platform_device *pdev) priv->dev = dev; priv->pdev = pdev; - if (of_id) { - pdata = of_id->data; + + pdata = device_get_match_data(&pdev->dev); + if (pdata) { priv->version = pdata->version; priv->dma_max_burst_length = pdata->dma_max_burst_length; } else { @@ -3558,7 +3562,7 @@ static int bcmgenet_probe(struct platform_device *pdev) priv->clk = devm_clk_get(&priv->pdev->dev, "enet"); if (IS_ERR(priv->clk)) { - dev_warn(&priv->pdev->dev, "failed to get enet clock\n"); + dev_dbg(&priv->pdev->dev, "failed to get enet clock\n"); priv->clk = NULL; } @@ -3582,23 +3586,34 @@ static int bcmgenet_probe(struct platform_device *pdev) priv->clk_wol = devm_clk_get(&priv->pdev->dev, "enet-wol"); if (IS_ERR(priv->clk_wol)) { - dev_warn(&priv->pdev->dev, "failed to get enet-wol clock\n"); + dev_dbg(&priv->pdev->dev, "failed to get enet-wol clock\n"); priv->clk_wol = NULL; } priv->clk_eee = devm_clk_get(&priv->pdev->dev, "enet-eee"); if (IS_ERR(priv->clk_eee)) { - dev_warn(&priv->pdev->dev, "failed to get enet-eee clock\n"); + dev_dbg(&priv->pdev->dev, "failed to get enet-eee clock\n"); priv->clk_eee = NULL; } /* If this is an internal GPHY, power it on now, before UniMAC is * brought out of reset as absolutely no UniMAC activity is allowed */ - if (dn && !of_property_read_string(dn, "phy-mode", &phy_mode_str) && - !strcasecmp(phy_mode_str, "internal")) + if (device_get_phy_mode(&pdev->dev) == PHY_INTERFACE_MODE_INTERNAL) bcmgenet_power_up(priv, GENET_POWER_PASSIVE); + if ((pd) && (!IS_ERR_OR_NULL(pd->mac_address))) + ether_addr_copy(dev->dev_addr, pd->mac_address); + else + if (!device_get_mac_address(&pdev->dev, dev->dev_addr, ETH_ALEN)) + if (has_acpi_companion(&pdev->dev)) + bcmgenet_get_hw_addr(priv, dev->dev_addr); + + if (!is_valid_ether_addr(dev->dev_addr)) { + dev_warn(&pdev->dev, "using random Ethernet MAC\n"); + eth_hw_addr_random(dev); + } + reset_umac(priv); err = bcmgenet_mii_init(dev); @@ -3771,6 +3786,12 @@ static int bcmgenet_suspend(struct device *d) static SIMPLE_DEV_PM_OPS(bcmgenet_pm_ops, bcmgenet_suspend, bcmgenet_resume); +static const struct acpi_device_id genet_acpi_match[] = { + { "BCM6E4E", (kernel_ulong_t)&bcm2711_plat_data }, + { }, +}; +MODULE_DEVICE_TABLE(acpi, genet_acpi_match); + static struct platform_driver bcmgenet_driver = { .probe = bcmgenet_probe, .remove = bcmgenet_remove, @@ -3779,6 +3800,7 @@ static struct platform_driver bcmgenet_driver = { .name = "bcmgenet", .of_match_table = bcmgenet_match, .pm = &bcmgenet_pm_ops, + .acpi_match_table = ACPI_PTR(genet_acpi_match), }, }; module_platform_driver(bcmgenet_driver); diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c index 6392a25..678545e 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmmii.c +++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c @@ -5,7 +5,7 @@ * Copyright (c) 2014-2017 Broadcom */ - +#include <linux/acpi.h> #include <linux/types.h> #include <linux/delay.h> #include <linux/wait.h> @@ -311,7 +311,8 @@ int bcmgenet_mii_config(struct net_device *dev, bool init) int bcmgenet_mii_probe(struct net_device *dev) { struct bcmgenet_priv *priv = netdev_priv(dev); - struct device_node *dn = priv->pdev->dev.of_node; + struct device *kdev = &priv->pdev->dev; + struct device_node *dn = kdev->of_node; struct phy_device *phydev; u32 phy_flags = 0; int ret; @@ -334,7 +335,27 @@ int bcmgenet_mii_probe(struct net_device *dev) return -ENODEV; } } else { - phydev = dev->phydev; + if (has_acpi_companion(kdev)) { + char mdio_bus_id[MII_BUS_ID_SIZE]; + struct mii_bus *unimacbus; + + snprintf(mdio_bus_id, MII_BUS_ID_SIZE, "%s-%d", + UNIMAC_MDIO_DRV_NAME, priv->pdev->id); + + unimacbus = mdio_find_bus(mdio_bus_id); + if (!unimacbus) { + pr_err("Unable to find mii\n"); + return -ENODEV; + } + phydev = phy_find_first(unimacbus); + put_device(&unimacbus->dev); + if (!phydev) { + pr_err("Unable to find PHY\n"); + return -ENODEV; + } + } else { + phydev = dev->phydev; + } phydev->dev_flags = phy_flags; ret = phy_connect_direct(dev, phydev, bcmgenet_mii_setup, @@ -455,9 +476,12 @@ static int bcmgenet_mii_register(struct bcmgenet_priv *priv) /* Retain this platform_device pointer for later cleanup */ priv->mii_pdev = ppdev; ppdev->dev.parent = &pdev->dev; - ppdev->dev.of_node = bcmgenet_mii_of_find_mdio(priv); - if (pdata) + if (dn) + ppdev->dev.of_node = bcmgenet_mii_of_find_mdio(priv); + else if (pdata) bcmgenet_mii_pdata_init(priv, &ppd); + else + ppd.phy_mask = ~0; ret = platform_device_add_resources(ppdev, &res, 1); if (ret) @@ -477,12 +501,33 @@ out: return ret; } +static int bcmgenet_phy_interface_init(struct bcmgenet_priv *priv) +{ + struct device *kdev = &priv->pdev->dev; + int phy_mode = device_get_phy_mode(kdev); + + if (phy_mode < 0) { + dev_err(kdev, "invalid PHY mode property\n"); + return phy_mode; + } + + priv->phy_interface = phy_mode; + + /* We need to specifically look up whether this PHY interface is + * internal or not *before* we even try to probe the PHY driver + * over MDIO as we may have shut down the internal PHY for power + * saving purposes. + */ + if (priv->phy_interface == PHY_INTERFACE_MODE_INTERNAL) + priv->internal_phy = true; + + return 0; +} + static int bcmgenet_mii_of_init(struct bcmgenet_priv *priv) { struct device_node *dn = priv->pdev->dev.of_node; - struct device *kdev = &priv->pdev->dev; struct phy_device *phydev; - phy_interface_t phy_mode; int ret; /* Fetch the PHY phandle */ @@ -500,23 +545,12 @@ static int bcmgenet_mii_of_init(struct bcmgenet_priv *priv) } /* Get the link mode */ - ret = of_get_phy_mode(dn, &phy_mode); - if (ret) { - dev_err(kdev, "invalid PHY mode property\n"); + ret = bcmgenet_phy_interface_init(priv); + if (ret) return ret; - } - - priv->phy_interface = phy_mode; - - /* We need to specifically look up whether this PHY interface is internal - * or not *before* we even try to probe the PHY driver over MDIO as we - * may have shut down the internal PHY for power saving purposes. - */ - if (priv->phy_interface == PHY_INTERFACE_MODE_INTERNAL) - priv->internal_phy = true; /* Make sure we initialize MoCA PHYs with a link down */ - if (phy_mode == PHY_INTERFACE_MODE_MOCA) { + if (priv->phy_interface == PHY_INTERFACE_MODE_MOCA) { phydev = of_phy_find_device(dn); if (phydev) { phydev->link = 0; @@ -581,10 +615,13 @@ static int bcmgenet_mii_pd_init(struct bcmgenet_priv *priv) static int bcmgenet_mii_bus_init(struct bcmgenet_priv *priv) { - struct device_node *dn = priv->pdev->dev.of_node; + struct device *kdev = &priv->pdev->dev; + struct device_node *dn = kdev->of_node; if (dn) return bcmgenet_mii_of_init(priv); + else if (has_acpi_companion(kdev)) + return bcmgenet_phy_interface_init(priv); else return bcmgenet_mii_pd_init(priv); } diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 9bb9f37..3ab9ca7 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -462,6 +462,23 @@ static struct class mdio_bus_class = { .dev_groups = mdio_bus_groups, }; +/** + * mdio_find_bus - Given the name of a mdiobus, find the mii_bus. + * @mdio_bus_np: Pointer to the mii_bus. + * + * Returns a reference to the mii_bus, or NULL if none found. The + * embedded struct device will have its reference count incremented, + * and this must be put_deviced'ed once the bus is finished with. + */ +struct mii_bus *mdio_find_bus(const char *mdio_name) +{ + struct device *d; + + d = class_find_device_by_name(&mdio_bus_class, mdio_name); + return d ? to_mii_bus(d) : NULL; +} +EXPORT_SYMBOL(mdio_find_bus); + #if IS_ENABLED(CONFIG_OF_MDIO) /** * of_mdio_find_bus - Given an mii_bus node, find the mii_bus. diff --git a/include/linux/phy.h b/include/linux/phy.h index 80f8b21..e72dbd0 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -289,6 +289,7 @@ static inline struct mii_bus *devm_mdiobus_alloc(struct device *dev) return devm_mdiobus_alloc_size(dev, 0); } +struct mii_bus *mdio_find_bus(const char *mdio_name); void devm_mdiobus_free(struct device *dev, struct mii_bus *bus); struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr); |