1 files changed, 30 insertions, 8 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
index a6b1de9a251d..429b2d357813 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
@@ -9,7 +9,6 @@
 *******************************************************************************/
 #include "stmmac.h"
 #include "stmmac_ptp.h"
-#include "dwmac4.h"
 
 /**
  * stmmac_adjust_freq
@@ -265,7 +264,7 @@ static int stmmac_getcrosststamp(struct ptp_clock_info *ptp,
 }
 
 /* structure describing a PTP hardware clock */
-static struct ptp_clock_info stmmac_ptp_clock_ops = {
+const struct ptp_clock_info stmmac_ptp_clock_ops = {
 	.owner = THIS_MODULE,
 	.name = "stmmac ptp",
 	.max_adj = 62500000,
@@ -282,6 +281,24 @@ static struct ptp_clock_info stmmac_ptp_clock_ops = {
 	.getcrosststamp = stmmac_getcrosststamp,
 };
 
+/* structure describing a PTP hardware clock */
+const struct ptp_clock_info dwmac1000_ptp_clock_ops = {
+	.owner = THIS_MODULE,
+	.name = "stmmac ptp",
+	.max_adj = 62500000,
+	.n_alarm = 0,
+	.n_ext_ts = 1,
+	.n_per_out = 0,
+	.n_pins = 0,
+	.pps = 0,
+	.adjfine = stmmac_adjust_freq,
+	.adjtime = stmmac_adjust_time,
+	.gettime64 = stmmac_get_time,
+	.settime64 = stmmac_set_time,
+	.enable = dwmac1000_ptp_enable,
+	.getcrosststamp = stmmac_getcrosststamp,
+};
+
 /**
  * stmmac_ptp_register
  * @priv: driver private structure
@@ -298,20 +315,25 @@ void stmmac_ptp_register(struct stmmac_priv *priv)
 		priv->pps[i].available = true;
 	}
 
-	if (priv->plat->ptp_max_adj)
-		stmmac_ptp_clock_ops.max_adj = priv->plat->ptp_max_adj;
-
 	/* Calculate the clock domain crossing (CDC) error if necessary */
 	priv->plat->cdc_error_adj = 0;
 	if (priv->plat->has_gmac4 && priv->plat->clk_ptp_rate)
 		priv->plat->cdc_error_adj = (2 * NSEC_PER_SEC) / priv->plat->clk_ptp_rate;
 
-	stmmac_ptp_clock_ops.n_per_out = priv->dma_cap.pps_out_num;
-	stmmac_ptp_clock_ops.n_ext_ts = priv->dma_cap.aux_snapshot_n;
+	/* Update the ptp clock parameters based on feature discovery, when
+	 * available
+	 */
+	if (priv->dma_cap.pps_out_num)
+		priv->ptp_clock_ops.n_per_out = priv->dma_cap.pps_out_num;
+
+	if (priv->dma_cap.aux_snapshot_n)
+		priv->ptp_clock_ops.n_ext_ts = priv->dma_cap.aux_snapshot_n;
+
+	if (priv->plat->ptp_max_adj)
+		priv->ptp_clock_ops.max_adj = priv->plat->ptp_max_adj;
 
 	rwlock_init(&priv->ptp_lock);
 	mutex_init(&priv->aux_ts_lock);
-	priv->ptp_clock_ops = stmmac_ptp_clock_ops;
 
 	priv->ptp_clock = ptp_clock_register(&priv->ptp_clock_ops,
 					     priv->device);