diff options
| -rw-r--r-- | target/linux/ramips/files/drivers/net/ramips.c | 152 | ||||
| -rw-r--r-- | target/linux/ramips/files/drivers/net/ramips_eth.h | 4 |
2 files changed, 154 insertions, 2 deletions
diff --git a/target/linux/ramips/files/drivers/net/ramips.c b/target/linux/ramips/files/drivers/net/ramips.c index 5d9d9f3b48..302942a620 100644 --- a/target/linux/ramips/files/drivers/net/ramips.c +++ b/target/linux/ramips/files/drivers/net/ramips.c @@ -24,6 +24,7 @@ #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/platform_device.h> +#include <linux/phy.h> #include <ramips_eth_platform.h> #include "ramips_eth.h" @@ -88,6 +89,9 @@ ramips_hw_set_macaddr(unsigned char *mac) } #ifdef CONFIG_RALINK_RT288X + +#define RAMIPS_MDIO_RETRY 1000 + static void ramips_setup_mdio_cfg(struct raeth_priv *re) { @@ -122,8 +126,140 @@ ramips_setup_mdio_cfg(struct raeth_priv *re) ramips_fe_wr(mdio_cfg, RAMIPS_MDIO_CFG); } +static int +ramips_mdio_wait_ready(struct raeth_priv *re) +{ + int retries; + + retries = RAMIPS_MDIO_RETRY; + while (1) { + u32 t; + + t = ramips_fe_rr(RAMIPS_MDIO_ACCESS); + if ((t & (0x1 << 31)) == 0) + return 0; + + if (retries-- == 0) + break; + + udelay(1); + } + + dev_err(re->parent, "MDIO operation timed out\n"); + return -ETIMEDOUT; +} + +static int +ramips_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg) +{ + struct raeth_priv *re = bus->priv; + int err; + u32 t; + + err = ramips_mdio_wait_ready(re); + if (err) + return 0xffff; + + t = (phy_addr << 24) | (phy_reg << 16); + ramips_fe_wr(t, RAMIPS_MDIO_ACCESS); + t |= (1 << 31); + ramips_fe_wr(t, RAMIPS_MDIO_ACCESS); + + err = ramips_mdio_wait_ready(re); + if (err) + return 0xffff; + + RADEBUG("%s: addr=%04x, reg=%04x, value=%04x\n", __func__, + phy_addr, phy_reg, ramips_fe_rr(RAMIPS_MDIO_ACCESS) & 0xffff); + + return ramips_fe_rr(RAMIPS_MDIO_ACCESS) & 0xffff; +} + +static int +ramips_mdio_write(struct mii_bus *bus, int phy_addr, int phy_reg, u16 val) +{ + struct raeth_priv *re = bus->priv; + int err; + u32 t; + + RADEBUG("%s: addr=%04x, reg=%04x, value=%04x\n", __func__, + phy_addr, phy_reg, ramips_fe_rr(RAMIPS_MDIO_ACCESS) & 0xffff); + + err = ramips_mdio_wait_ready(re); + if (err) + return err; + + t = (1 << 30) | (phy_addr << 24) | (phy_reg << 16) | val; + ramips_fe_wr(t, RAMIPS_MDIO_ACCESS); + t |= (1 << 31); + ramips_fe_wr(t, RAMIPS_MDIO_ACCESS); + + return ramips_mdio_wait_ready(re); +} + +static int +ramips_mdio_reset(struct mii_bus *bus) +{ + /* TODO */ + return 0; +} + +static int +ramips_mdio_init(struct raeth_priv *re) +{ + int err; + int i; + + re->mii_bus = mdiobus_alloc(); + if (re->mii_bus == NULL) + return -ENOMEM; + + re->mii_bus->name = "ramips_mdio"; + re->mii_bus->read = ramips_mdio_read; + re->mii_bus->write = ramips_mdio_write; + re->mii_bus->reset = ramips_mdio_reset; + re->mii_bus->irq = re->mii_irq; + re->mii_bus->priv = re; + re->mii_bus->parent = re->parent; + + snprintf(re->mii_bus->id, MII_BUS_ID_SIZE, "%s", "ramips_mdio"); + re->mii_bus->phy_mask = 0; + + for (i = 0; i < PHY_MAX_ADDR; i++) + re->mii_irq[i] = PHY_POLL; + + err = mdiobus_register(re->mii_bus); + if (err) + goto err_free_bus; + + return 0; + +err_free_bus: + kfree(re->mii_bus); + return err; +} + +static void +ramips_mdio_cleanup(struct raeth_priv *re) +{ + mdiobus_unregister(re->mii_bus); + kfree(re->mii_bus); +} + #else -static inline void ramips_setup_mdio_cfg(struct raeth_priv *re) +static inline void +ramips_setup_mdio_cfg(struct raeth_priv *re) +{ +} + +static inline int +ramips_mdio_init(struct raeth_priv *re) +{ + return 0; +} + +static inline void +ramips_mdio_cleanup(struct raeth_priv *re) { } #endif /* CONFIG_RALINK_RT288X */ @@ -457,6 +593,7 @@ static int __init ramips_eth_probe(struct net_device *dev) { struct raeth_priv *priv = netdev_priv(dev); + int err; BUG_ON(!priv->plat->reset_fe); priv->plat->reset_fe(); @@ -468,11 +605,21 @@ ramips_eth_probe(struct net_device *dev) dev->watchdog_timeo = TX_TIMEOUT; spin_lock_init(&priv->page_lock); - return 0; + err = ramips_mdio_init(priv); + return err; +} + +static void +ramips_eth_uninit(struct net_device *dev) +{ + struct raeth_priv *re = netdev_priv(dev); + + ramips_mdio_cleanup(re); } static const struct net_device_ops ramips_eth_netdev_ops = { .ndo_init = ramips_eth_probe, + .ndo_uninit = ramips_eth_uninit, .ndo_open = ramips_eth_open, .ndo_stop = ramips_eth_stop, .ndo_start_xmit = ramips_eth_hard_start_xmit, @@ -526,6 +673,7 @@ ramips_eth_plat_probe(struct platform_device *plat) priv = netdev_priv(ramips_dev); priv->netdev = ramips_dev; + priv->parent = &plat->dev; priv->speed = data->speed; priv->duplex = data->duplex; priv->rx_fc = data->rx_fc; diff --git a/target/linux/ramips/files/drivers/net/ramips_eth.h b/target/linux/ramips/files/drivers/net/ramips_eth.h index 87e67a581e..4927f2a211 100644 --- a/target/linux/ramips/files/drivers/net/ramips_eth.h +++ b/target/linux/ramips/files/drivers/net/ramips_eth.h @@ -230,12 +230,16 @@ struct raeth_priv spinlock_t page_lock; struct net_device *netdev; + struct device *parent; struct ramips_eth_platform_data *plat; int speed; int duplex; int tx_fc; int rx_fc; + + struct mii_bus *mii_bus; + int mii_irq[PHY_MAX_ADDR]; }; #endif /* RAMIPS_ETH_H */ |