static int bcm_sf2_mdio_register(struct dsa_switch *ds)
{
struct bcm_sf2_priv *priv = ds_to_priv(ds);
struct device_node *dn;
static int index;
int err;
/* Find our integrated MDIO bus node */
dn = of_find_compatible_node(NULL, NULL, "brcm,unimac-mdio");
priv->master_mii_bus = of_mdio_find_bus(dn);
if (!priv->master_mii_bus)
return -EPROBE_DEFER;
get_device(&priv->master_mii_bus->dev);
priv->master_mii_dn = dn;
priv->slave_mii_bus = devm_mdiobus_alloc(ds->dev);
if (!priv->slave_mii_bus)
return -ENOMEM;
priv->slave_mii_bus->priv = priv;
priv->slave_mii_bus->name = "sf2 slave mii";
priv->slave_mii_bus->read = bcm_sf2_sw_mdio_read;
priv->slave_mii_bus->write = bcm_sf2_sw_mdio_write;
snprintf(priv->slave_mii_bus->id, MII_BUS_ID_SIZE, "sf2-%d",
index++);
priv->slave_mii_bus->dev.of_node = dn;
/* Include the pseudo-PHY address to divert reads towards our
* workaround. This is only required for 7445D0, since 7445E0
* disconnects the internal switch pseudo-PHY such that we can use the
* regular SWITCH_MDIO master controller instead.
*
* Here we flag the pseudo PHY as needing special treatment and would
* otherwise make all other PHY read/writes go to the master MDIO bus
* controller that comes with this switch backed by the "mdio-unimac"
* driver.
*/
if (of_machine_is_compatible("brcm,bcm7445d0"))
priv->indir_phy_mask |= (1 << BRCM_PSEUDO_PHY_ADDR);
else
priv->indir_phy_mask = 0;
ds->phys_mii_mask = priv->indir_phy_mask;
ds->slave_mii_bus = priv->slave_mii_bus;
priv->slave_mii_bus->parent = ds->dev->parent;
priv->slave_mii_bus->phy_mask = ~priv->indir_phy_mask;
if (dn)
err = of_mdiobus_register(priv->slave_mii_bus, dn);
else
err = mdiobus_register(priv->slave_mii_bus);
if (err)
of_node_put(dn);
return err;
}
static int gswip_mdio(struct gswip_priv *priv, struct device_node *mdio_np)
{
struct dsa_switch *ds = priv->ds;
ds->slave_mii_bus = devm_mdiobus_alloc(priv->dev);
if (!ds->slave_mii_bus)
return -ENOMEM;
ds->slave_mii_bus->priv = priv;
ds->slave_mii_bus->read = gswip_mdio_rd;
ds->slave_mii_bus->write = gswip_mdio_wr;
ds->slave_mii_bus->name = "lantiq,xrx200-mdio";
snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "%s-mii",
dev_name(priv->dev));
ds->slave_mii_bus->parent = priv->dev;
ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
return of_mdiobus_register(ds->slave_mii_bus, mdio_np);
}
static int mdio_mux_iproc_probe(struct platform_device *pdev)
{
struct iproc_mdiomux_desc *md;
struct mii_bus *bus;
struct resource *res;
int rc;
md = devm_kzalloc(&pdev->dev, sizeof(*md), GFP_KERNEL);
if (!md)
return -ENOMEM;
md->dev = &pdev->dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res->start & 0xfff) {
/* For backward compatibility in case the
* base address is specified with an offset.
*/
dev_info(&pdev->dev, "fix base address in dt-blob\n");
res->start &= ~0xfff;
res->end = res->start + MDIO_REG_ADDR_SPACE_SIZE - 1;
}
md->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(md->base)) {
dev_err(&pdev->dev, "failed to ioremap register\n");
return PTR_ERR(md->base);
}
md->mii_bus = devm_mdiobus_alloc(&pdev->dev);
if (!md->mii_bus) {
dev_err(&pdev->dev, "mdiomux bus alloc failed\n");
return -ENOMEM;
}
md->core_clk = devm_clk_get(&pdev->dev, NULL);
if (md->core_clk == ERR_PTR(-ENOENT) ||
md->core_clk == ERR_PTR(-EINVAL))
md->core_clk = NULL;
else if (IS_ERR(md->core_clk))
return PTR_ERR(md->core_clk);
rc = clk_prepare_enable(md->core_clk);
if (rc) {
dev_err(&pdev->dev, "failed to enable core clk\n");
return rc;
}
bus = md->mii_bus;
bus->priv = md;
bus->name = "iProc MDIO mux bus";
snprintf(bus->id, MII_BUS_ID_SIZE, "%s-%d", pdev->name, pdev->id);
bus->parent = &pdev->dev;
bus->read = iproc_mdiomux_read;
bus->write = iproc_mdiomux_write;
bus->phy_mask = ~0;
bus->dev.of_node = pdev->dev.of_node;
rc = mdiobus_register(bus);
if (rc) {
dev_err(&pdev->dev, "mdiomux registration failed\n");
goto out_clk;
}
platform_set_drvdata(pdev, md);
rc = mdio_mux_init(md->dev, md->dev->of_node, mdio_mux_iproc_switch_fn,
&md->mux_handle, md, md->mii_bus);
if (rc) {
dev_info(md->dev, "mdiomux initialization failed\n");
goto out_register;
}
mdio_mux_iproc_config(md);
dev_info(md->dev, "iProc mdiomux registered\n");
return 0;
out_register:
mdiobus_unregister(bus);
out_clk:
clk_disable_unprepare(md->core_clk);
return rc;
}
/* Configure the MDIO bus and connect the external PHY */
int emac_phy_config(struct platform_device *pdev, struct emac_adapter *adpt)
{
struct device_node *np = pdev->dev.of_node;
struct mii_bus *mii_bus;
int ret;
/* Create the mii_bus object for talking to the MDIO bus */
adpt->mii_bus = mii_bus = devm_mdiobus_alloc(&pdev->dev);
if (!mii_bus)
return -ENOMEM;
mii_bus->name = "emac-mdio";
snprintf(mii_bus->id, MII_BUS_ID_SIZE, "%s", pdev->name);
mii_bus->read = emac_mdio_read;
mii_bus->write = emac_mdio_write;
mii_bus->parent = &pdev->dev;
mii_bus->priv = adpt;
if (has_acpi_companion(&pdev->dev)) {
u32 phy_addr;
ret = mdiobus_register(mii_bus);
if (ret) {
dev_err(&pdev->dev, "could not register mdio bus\n");
return ret;
}
ret = device_property_read_u32(&pdev->dev, "phy-channel",
&phy_addr);
if (ret)
/* If we can't read a valid phy address, then assume
* that there is only one phy on this mdio bus.
*/
adpt->phydev = phy_find_first(mii_bus);
else
adpt->phydev = mdiobus_get_phy(mii_bus, phy_addr);
/* of_phy_find_device() claims a reference to the phydev,
* so we do that here manually as well. When the driver
* later unloads, it can unilaterally drop the reference
* without worrying about ACPI vs DT.
*/
if (adpt->phydev)
get_device(&adpt->phydev->mdio.dev);
} else {
struct device_node *phy_np;
ret = of_mdiobus_register(mii_bus, np);
if (ret) {
dev_err(&pdev->dev, "could not register mdio bus\n");
return ret;
}
phy_np = of_parse_phandle(np, "phy-handle", 0);
adpt->phydev = of_phy_find_device(phy_np);
of_node_put(phy_np);
}
if (!adpt->phydev) {
dev_err(&pdev->dev, "could not find external phy\n");
mdiobus_unregister(mii_bus);
return -ENODEV;
}
return 0;
}
static int dsa_ds_apply(struct dsa_switch_tree *dst, struct dsa_switch *ds)
{
struct dsa_port *port;
u32 index;
int err;
/* Initialize ds->phys_mii_mask before registering the slave MDIO bus
* driver and before ops->setup() has run, since the switch drivers and
* the slave MDIO bus driver rely on these values for probing PHY
* devices or not
*/
ds->phys_mii_mask = ds->enabled_port_mask;
/* Add the switch to devlink before calling setup, so that setup can
* add dpipe tables
*/
ds->devlink = devlink_alloc(&dsa_devlink_ops, 0);
if (!ds->devlink)
return -ENOMEM;
err = devlink_register(ds->devlink, ds->dev);
if (err)
return err;
err = ds->ops->setup(ds);
if (err < 0)
return err;
err = dsa_switch_register_notifier(ds);
if (err)
return err;
if (ds->ops->set_addr) {
err = ds->ops->set_addr(ds, dst->cpu_dp->netdev->dev_addr);
if (err < 0)
return err;
}
if (!ds->slave_mii_bus && ds->ops->phy_read) {
ds->slave_mii_bus = devm_mdiobus_alloc(ds->dev);
if (!ds->slave_mii_bus)
return -ENOMEM;
dsa_slave_mii_bus_init(ds);
err = mdiobus_register(ds->slave_mii_bus);
if (err < 0)
return err;
}
for (index = 0; index < ds->num_ports; index++) {
port = &ds->ports[index];
if (!dsa_port_is_valid(port))
continue;
if (dsa_port_is_dsa(port)) {
err = dsa_dsa_port_apply(port);
if (err)
return err;
continue;
}
if (dsa_port_is_cpu(port)) {
err = dsa_cpu_port_apply(port);
if (err)
return err;
continue;
}
err = dsa_user_port_apply(port);
if (err)
continue;
}
return 0;
}