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net: dsa: qca8k: Allow overwriting CPU port setting

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Implement adjust_link function that allows to overwrite default CPU port
setting using fixed-link device tree subnode.

Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michal Vokáč 2018-05-23 08:20:22 +02:00 committed by David S. Miller
parent 79a4ed4f0f
commit 9bb2289f90
2 changed files with 44 additions and 0 deletions
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43
drivers/net/dsa/qca8k.c
View File

@ -587,6 +587,47 @@ qca8k_setup(struct dsa_switch *ds)
return 0;
}
static void
qca8k_adjust_link(struct dsa_switch *ds, int port, struct phy_device *phy)
{
struct qca8k_priv *priv = ds->priv;
u32 reg;
/* Force fixed-link setting for CPU port, skip others. */
if (!phy_is_pseudo_fixed_link(phy))
return;
/* Set port speed */
switch (phy->speed) {
case 10:
reg = QCA8K_PORT_STATUS_SPEED_10;
break;
case 100:
reg = QCA8K_PORT_STATUS_SPEED_100;
break;
case 1000:
reg = QCA8K_PORT_STATUS_SPEED_1000;
break;
default:
dev_dbg(priv->dev, "port%d link speed %dMbps not supported.\n",
port, phy->speed);
return;
}
/* Set duplex mode */
if (phy->duplex == DUPLEX_FULL)
reg |= QCA8K_PORT_STATUS_DUPLEX;
/* Force flow control */
if (dsa_is_cpu_port(ds, port))
reg |= QCA8K_PORT_STATUS_RXFLOW | QCA8K_PORT_STATUS_TXFLOW;
/* Force link down before changing MAC options */
qca8k_port_set_status(priv, port, 0);
qca8k_write(priv, QCA8K_REG_PORT_STATUS(port), reg);
qca8k_port_set_status(priv, port, 1);
}
static int
qca8k_phy_read(struct dsa_switch *ds, int phy, int regnum)
{
@ -841,6 +882,7 @@ qca8k_get_tag_protocol(struct dsa_switch *ds, int port)
static const struct dsa_switch_ops qca8k_switch_ops = {
.get_tag_protocol = qca8k_get_tag_protocol,
.setup = qca8k_setup,
.adjust_link = qca8k_adjust_link,
.get_strings = qca8k_get_strings,
.phy_read = qca8k_phy_read,
.phy_write = qca8k_phy_write,
@ -872,6 +914,7 @@ qca8k_sw_probe(struct mdio_device *mdiodev)
return -ENOMEM;
priv->bus = mdiodev->bus;
priv->dev = &mdiodev->dev;
/* read the switches ID register */
id = qca8k_read(priv, QCA8K_REG_MASK_CTRL);

1
drivers/net/dsa/qca8k.h
View File

@ -167,6 +167,7 @@ struct qca8k_priv {
struct ar8xxx_port_status port_sts[QCA8K_NUM_PORTS];
struct dsa_switch *ds;
struct mutex reg_mutex;
struct device *dev;
};
struct qca8k_mib_desc {