Adding upstream version 6.7.7.upstream/6.7.7

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 21 insertions, 13 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
index 3d7825cb30..bffa5c0170 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
@@ -81,7 +81,7 @@ static int stmmac_adjust_time(struct ptp_clock_info *ptp, s64 delta)
 	stmmac_adjust_systime(priv, priv->ptpaddr, sec, nsec, neg_adj, xmac);
 	write_unlock_irqrestore(&priv->ptp_lock, flags);
 
-	/* Caculate new basetime and re-configured EST after PTP time adjust. */
+	/* Calculate new basetime and re-configured EST after PTP time adjust. */
 	if (est_rst) {
 		struct timespec64 current_time, time;
 		ktime_t current_time_ns, basetime;
@@ -191,26 +191,33 @@ static int stmmac_enable(struct ptp_clock_info *ptp,
 					     priv->systime_flags);
 		write_unlock_irqrestore(&priv->ptp_lock, flags);
 		break;
-	case PTP_CLK_REQ_EXTTS:
-		if (on)
-			priv->plat->flags |= STMMAC_FLAG_EXT_SNAPSHOT_EN;
-		else
-			priv->plat->flags &= ~STMMAC_FLAG_EXT_SNAPSHOT_EN;
+	case PTP_CLK_REQ_EXTTS: {
+		u8 channel;
+
 		mutex_lock(&priv->aux_ts_lock);
 		acr_value = readl(ptpaddr + PTP_ACR);
+		channel = ilog2(FIELD_GET(PTP_ACR_MASK, acr_value));
 		acr_value &= ~PTP_ACR_MASK;
+
 		if (on) {
+			if (FIELD_GET(PTP_ACR_MASK, acr_value)) {
+				netdev_err(priv->dev,
+					   "Cannot enable auxiliary snapshot %d as auxiliary snapshot %d is already enabled",
+					rq->extts.index, channel);
+				mutex_unlock(&priv->aux_ts_lock);
+				return -EBUSY;
+			}
+
+			priv->plat->flags |= STMMAC_FLAG_EXT_SNAPSHOT_EN;
+
 			/* Enable External snapshot trigger */
-			acr_value |= priv->plat->ext_snapshot_num;
+			acr_value |= PTP_ACR_ATSEN(rq->extts.index);
 			acr_value |= PTP_ACR_ATSFC;
-			netdev_dbg(priv->dev, "Auxiliary Snapshot %d enabled.\n",
-				   priv->plat->ext_snapshot_num >>
-				   PTP_ACR_ATSEN_SHIFT);
 		} else {
-			netdev_dbg(priv->dev, "Auxiliary Snapshot %d disabled.\n",
-				   priv->plat->ext_snapshot_num >>
-				   PTP_ACR_ATSEN_SHIFT);
+			priv->plat->flags &= ~STMMAC_FLAG_EXT_SNAPSHOT_EN;
 		}
+		netdev_dbg(priv->dev, "Auxiliary Snapshot %d %s.\n",
+			   rq->extts.index, on ? "enabled" : "disabled");
 		writel(acr_value, ptpaddr + PTP_ACR);
 		mutex_unlock(&priv->aux_ts_lock);
 		/* wait for auxts fifo clear to finish */
@@ -218,6 +225,7 @@ static int stmmac_enable(struct ptp_clock_info *ptp,
 					 !(acr_value & PTP_ACR_ATSFC),
 					 10, 10000);
 		break;
+	}
 
 	default:
 		break;