net: lan966x: Implement get_ts_info

Implement the function get_ts_info in ethtool_ops which is needed to get
the HW capabilities for timestamping.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/microchip/lan966x/lan966x_ethtool.c

@@ -545,6 +545,39 @@ static int lan966x_set_pauseparam(struct net_device *dev,
 	return phylink_ethtool_set_pauseparam(port->phylink, pause);
 }
 
+static int lan966x_get_ts_info(struct net_device *dev,
+			       struct ethtool_ts_info *info)
+{
+	struct lan966x_port *port = netdev_priv(dev);
+	struct lan966x *lan966x = port->lan966x;
+	struct lan966x_phc *phc;
+
+	if (!lan966x->ptp)
+		return ethtool_op_get_ts_info(dev, info);
+
+	phc = &lan966x->phc[LAN966X_PHC_PORT];
+
+	info->phc_index = phc->clock ? ptp_clock_index(phc->clock) : -1;
+	if (info->phc_index == -1) {
+		info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE |
+					 SOF_TIMESTAMPING_RX_SOFTWARE |
+					 SOF_TIMESTAMPING_SOFTWARE;
+		return 0;
+	}
+	info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE |
+				 SOF_TIMESTAMPING_RX_SOFTWARE |
+				 SOF_TIMESTAMPING_SOFTWARE |
+				 SOF_TIMESTAMPING_TX_HARDWARE |
+				 SOF_TIMESTAMPING_RX_HARDWARE |
+				 SOF_TIMESTAMPING_RAW_HARDWARE;
+	info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON) |
+			 BIT(HWTSTAMP_TX_ONESTEP_SYNC);
+	info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
+			   BIT(HWTSTAMP_FILTER_ALL);
+
+	return 0;
+}
+
 const struct ethtool_ops lan966x_ethtool_ops = {
 	.get_link_ksettings     = lan966x_get_link_ksettings,
 	.set_link_ksettings     = lan966x_set_link_ksettings,
@@ -556,6 +589,7 @@ const struct ethtool_ops lan966x_ethtool_ops = {
 	.get_eth_mac_stats      = lan966x_get_eth_mac_stats,
 	.get_rmon_stats		= lan966x_get_eth_rmon_stats,
 	.get_link		= ethtool_op_get_link,
+	.get_ts_info		= lan966x_get_ts_info,
 };
 
 static void lan966x_check_stats_work(struct work_struct *work)