Subject: [PATCH net-next v2 1/7] net: ti: am65-cpsw: move hw timestamping to ndo callback

From: Vadim Fedorenko <[email-masked]>
Date: Tue, 14 Oct 2025 22:42:10 +0000

Migrate driver to new API for HW timestamping.

Signed-off-by: Vadim Fedorenko <[email-masked]>
---
 drivers/net/ethernet/ti/am65-cpsw-nuss.c | 44 +++++++++++-------------
 1 file changed, 20 insertions(+), 24 deletions(-)

diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index 110eb2da8dbc..d5f358ec9820 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -1788,28 +1788,28 @@ static int am65_cpsw_nuss_ndo_slave_set_mac_address(struct net_device *ndev,
 }
 
 static int am65_cpsw_nuss_hwtstamp_set(struct net_device *ndev,
-				       struct ifreq *ifr)
+				       struct kernel_hwtstamp_config *cfg,
+				       struct netlink_ext_ack *extack)
 {
 	struct am65_cpsw_port *port = am65_ndev_to_port(ndev);
 	u32 ts_ctrl, seq_id, ts_ctrl_ltype2, ts_vlan_ltype;
-	struct hwtstamp_config cfg;
 
-	if (!IS_ENABLED(CONFIG_TI_K3_AM65_CPTS))
+	if (!IS_ENABLED(CONFIG_TI_K3_AM65_CPTS)) {
+		NL_SET_ERR_MSG(extack, "Time stamping is not supported");
 		return -EOPNOTSUPP;
-
-	if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
-		return -EFAULT;
+	}
 
 	/* TX HW timestamp */
-	switch (cfg.tx_type) {
+	switch (cfg->tx_type) {
 	case HWTSTAMP_TX_OFF:
 	case HWTSTAMP_TX_ON:
 		break;
 	default:
+		NL_SET_ERR_MSG(extack, "TX mode is not supported");
 		return -ERANGE;
 	}
 
-	switch (cfg.rx_filter) {
+	switch (cfg->rx_filter) {
 	case HWTSTAMP_FILTER_NONE:
 		port->rx_ts_enabled = false;
 		break;
@@ -1826,17 +1826,19 @@ static int am65_cpsw_nuss_hwtstamp_set(struct net_device *ndev,
 	case HWTSTAMP_FILTER_PTP_V2_SYNC:
 	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
 		port->rx_ts_enabled = true;
-		cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT | HWTSTAMP_FILTER_PTP_V1_L4_EVENT;
+		cfg->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT | HWTSTAMP_FILTER_PTP_V1_L4_EVENT;
 		break;
 	case HWTSTAMP_FILTER_ALL:
 	case HWTSTAMP_FILTER_SOME:
 	case HWTSTAMP_FILTER_NTP_ALL:
+		NL_SET_ERR_MSG(extack, "RX filter is not supported");
 		return -EOPNOTSUPP;
 	default:
+		NL_SET_ERR_MSG(extack, "RX filter is not supported");
 		return -ERANGE;
 	}
 
-	port->tx_ts_enabled = (cfg.tx_type == HWTSTAMP_TX_ON);
+	port->tx_ts_enabled = (cfg->tx_type == HWTSTAMP_TX_ON);
 
 	/* cfg TX timestamp */
 	seq_id = (AM65_CPSW_TS_SEQ_ID_OFFSET <<
@@ -1872,25 +1874,24 @@ static int am65_cpsw_nuss_hwtstamp_set(struct net_device *ndev,
 	       AM65_CPSW_PORTN_REG_TS_CTL_LTYPE2);
 	writel(ts_ctrl, port->port_base + AM65_CPSW_PORTN_REG_TS_CTL);
 
-	return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
+	return 0;
 }
 
 static int am65_cpsw_nuss_hwtstamp_get(struct net_device *ndev,
-				       struct ifreq *ifr)
+				       struct kernel_hwtstamp_config *cfg)
 {
 	struct am65_cpsw_port *port = am65_ndev_to_port(ndev);
-	struct hwtstamp_config cfg;
 
 	if (!IS_ENABLED(CONFIG_TI_K3_AM65_CPTS))
 		return -EOPNOTSUPP;
 
-	cfg.flags = 0;
-	cfg.tx_type = port->tx_ts_enabled ?
+	cfg->flags = 0;
+	cfg->tx_type = port->tx_ts_enabled ?
 		      HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;
-	cfg.rx_filter = port->rx_ts_enabled ? HWTSTAMP_FILTER_PTP_V2_EVENT |
+	cfg->rx_filter = port->rx_ts_enabled ? HWTSTAMP_FILTER_PTP_V2_EVENT |
 			HWTSTAMP_FILTER_PTP_V1_L4_EVENT : HWTSTAMP_FILTER_NONE;
 
-	return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
+	return 0;
 }
 
 static int am65_cpsw_nuss_ndo_slave_ioctl(struct net_device *ndev,
@@ -1901,13 +1902,6 @@ static int am65_cpsw_nuss_ndo_slave_ioctl(struct net_device *ndev,
 	if (!netif_running(ndev))
 		return -EINVAL;
 
-	switch (cmd) {
-	case SIOCSHWTSTAMP:
-		return am65_cpsw_nuss_hwtstamp_set(ndev, req);
-	case SIOCGHWTSTAMP:
-		return am65_cpsw_nuss_hwtstamp_get(ndev, req);
-	}
-
 	return phylink_mii_ioctl(port->slave.phylink, req, cmd);
 }
 
@@ -1991,6 +1985,8 @@ static const struct net_device_ops am65_cpsw_nuss_netdev_ops = {
 	.ndo_set_tx_maxrate	= am65_cpsw_qos_ndo_tx_p0_set_maxrate,
 	.ndo_bpf		= am65_cpsw_ndo_bpf,
 	.ndo_xdp_xmit		= am65_cpsw_ndo_xdp_xmit,
+	.ndo_hwtstamp_get       = am65_cpsw_nuss_hwtstamp_get,
+	.ndo_hwtstamp_set       = am65_cpsw_nuss_hwtstamp_set,
 };
 
 static void am65_cpsw_disable_phy(struct phy *phy)
-- 
2.47.3