diff options
Diffstat (limited to 'drivers/of/of_mdio.c')
| -rw-r--r-- | drivers/of/of_mdio.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index fc757ef6eadc..f5c2a5487761 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -42,14 +42,37 @@ static int of_get_phy_id(struct device_node *device, u32 *phy_id) return -EINVAL; } +static struct mii_timestamper *of_find_mii_timestamper(struct device_node *node) +{ + struct of_phandle_args arg; + int err; + + err = of_parse_phandle_with_fixed_args(node, "timestamper", 1, 0, &arg); + + if (err == -ENOENT) + return NULL; + else if (err) + return ERR_PTR(err); + + if (arg.args_count != 1) + return ERR_PTR(-EINVAL); + + return register_mii_timestamper(arg.np, arg.args[0]); +} + static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *child, u32 addr) { + struct mii_timestamper *mii_ts; struct phy_device *phy; bool is_c45; int rc; u32 phy_id; + mii_ts = of_find_mii_timestamper(child); + if (IS_ERR(mii_ts)) + return PTR_ERR(mii_ts); + is_c45 = of_device_is_compatible(child, "ethernet-phy-ieee802.3-c45"); @@ -57,11 +80,14 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, phy = phy_device_create(mdio, addr, phy_id, 0, NULL); else phy = get_phy_device(mdio, addr, is_c45); - if (IS_ERR(phy)) + if (IS_ERR(phy)) { + unregister_mii_timestamper(mii_ts); return PTR_ERR(phy); + } rc = of_irq_get(child, 0); if (rc == -EPROBE_DEFER) { + unregister_mii_timestamper(mii_ts); phy_device_free(phy); return rc; } @@ -90,10 +116,12 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, * register it */ rc = phy_device_register(phy); if (rc) { + unregister_mii_timestamper(mii_ts); phy_device_free(phy); of_node_put(child); return rc; } + phy->mii_ts = mii_ts; dev_dbg(&mdio->dev, "registered phy %pOFn at address %i\n", child, addr); |