@@ -2673,6 +2673,69 @@ static int ksz_max_mtu(struct dsa_switch *ds, int port)
return -EOPNOTSUPP;
}
+static int ksz_validate_eee(struct dsa_switch *ds, int port)
+{
+ struct ksz_device *dev = ds->priv;
+
+ if (!dev->info->internal_phy[port])
+ return -EOPNOTSUPP;
+
+ switch (dev->chip_id) {
+ case KSZ8563_CHIP_ID:
+ case KSZ9477_CHIP_ID:
+ case KSZ9563_CHIP_ID:
+ case KSZ9567_CHIP_ID:
+ case KSZ9893_CHIP_ID:
+ case KSZ9896_CHIP_ID:
+ case KSZ9897_CHIP_ID:
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+static int ksz_get_mac_eee(struct dsa_switch *ds, int port,
+ struct ethtool_eee *e)
+{
+ int ret;
+
+ ret = ksz_validate_eee(ds, port);
+ if (ret)
+ return ret;
+
+ /* There is no documented control of Tx LPI configuration. */
+ e->tx_lpi_enabled = true;
+ /* There is no documented control of Tx LPI timer. According to tests
+ * Tx LPI timer seems to be set by default to minimal value.
+ */
+ e->tx_lpi_timer = 0;
+
+ return 0;
+}
+
+static int ksz_set_mac_eee(struct dsa_switch *ds, int port,
+ struct ethtool_eee *e)
+{
+ struct ksz_device *dev = ds->priv;
+ int ret;
+
+ ret = ksz_validate_eee(ds, port);
+ if (ret)
+ return ret;
+
+ if (!e->tx_lpi_enabled) {
+ dev_err(dev->dev, "Disabling EEE Tx LPI is not supported\n");
+ return -EINVAL;
+ }
+
+ if (e->tx_lpi_timer) {
+ dev_err(dev->dev, "Setting EEE Tx LPI timer is not supported\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static void ksz_set_xmii(struct ksz_device *dev, int port,
phy_interface_t interface)
{
@@ -3130,6 +3193,8 @@ static const struct dsa_switch_ops ksz_switch_ops = {
.port_txtstamp = ksz_port_txtstamp,
.port_rxtstamp = ksz_port_rxtstamp,
.port_setup_tc = ksz_setup_tc,
+ .get_mac_eee = ksz_get_mac_eee,
+ .set_mac_eee = ksz_set_mac_eee,
};
struct ksz_device *ksz_switch_alloc(struct device *base, void *priv)
Some of KSZ9477 family switches provides EEE support. To enable it, we just need to register set_mac_eee/set_mac_eee handlers and validate supported chip version and port. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> --- drivers/net/dsa/microchip/ksz_common.c | 65 ++++++++++++++++++++++++++ 1 file changed, 65 insertions(+)