diff mbox series

[net-next,v4,6/9] net: stmmac: Enable timestamping interrupt on dwmac1000

Message ID 20241112170658.2388529-7-maxime.chevallier@bootlin.com (mailing list archive)
State New
Headers show
Series Support external snapshots on dwmac1000 | expand

Commit Message

Maxime Chevallier Nov. 12, 2024, 5:06 p.m. UTC 
The default configuration for the interrupts on dwmac1000 have the
timestamping interrupt masked. Now that the timestamping has been
adapted to dwmac1000, enable the timestamping interrupt on these
platforms.

On dwmac1000, the external snapshot interrupt is configured through a
dedicated bit, that is set as reserved on other dwmac variants. The
timestaming interrupt is acknowledged by reading the
GMAC3_X_TIMESTAMP_STATUS register.

Make sure that this interrupt is enabled when snapshot is enabled, and
masked when disabled.

Reviewed-by: Daniel Machon <daniel.machon@microchip.com>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
---
 .../net/ethernet/stmicro/stmmac/dwmac1000_core.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index 73bba4fdc2e4..96bcda0856ec 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -595,6 +595,20 @@  void dwmac1000_timestamp_interrupt(struct stmmac_priv *priv)
 
 /* DWMAC 1000 ptp_clock_info ops */
 
+static void dwmac1000_timestamp_interrupt_cfg(struct stmmac_priv *priv, bool en)
+{
+	void __iomem *ioaddr = priv->ioaddr;
+
+	u32 intr_mask = readl(ioaddr + GMAC_INT_MASK);
+
+	if (en)
+		intr_mask &= ~GMAC_INT_DISABLE_TIMESTAMP;
+	else
+		intr_mask |= GMAC_INT_DISABLE_TIMESTAMP;
+
+	writel(intr_mask, ioaddr + GMAC_INT_MASK);
+}
+
 int dwmac1000_ptp_enable(struct ptp_clock_info *ptp,
 			 struct ptp_clock_request *rq, int on)
 {
@@ -628,6 +642,8 @@  int dwmac1000_ptp_enable(struct ptp_clock_info *ptp,
 					 10, 10000);
 
 		mutex_unlock(&priv->aux_ts_lock);
+
+		dwmac1000_timestamp_interrupt_cfg(priv, on);
 		break;
 
 	default: