dpaa2-ptp: add external trigger event support

This patch is to add external trigger event support
for dpaa2-ptp driver with v2 dprtc_set_irq_mask() API.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c

@@ -27,6 +27,20 @@ static int dpaa2_ptp_enable(struct ptp_clock_info *ptp,
 	mc_dev = to_fsl_mc_device(dev);
 
 	switch (rq->type) {
+	case PTP_CLK_REQ_EXTTS:
+		switch (rq->extts.index) {
+		case 0:
+			bit = DPRTC_EVENT_ETS1;
+			break;
+		case 1:
+			bit = DPRTC_EVENT_ETS2;
+			break;
+		default:
+			return -EINVAL;
+		}
+		if (on)
+			extts_clean_up(ptp_qoriq, rq->extts.index, false);
+		break;
 	case PTP_CLK_REQ_PPS:
 		bit = DPRTC_EVENT_PPS;
 		break;
@@ -96,6 +110,12 @@ static irqreturn_t dpaa2_ptp_irq_handler_thread(int irq, void *priv)
 		ptp_clock_event(ptp_qoriq->clock, &event);
 	}
 
+	if (status & DPRTC_EVENT_ETS1)
+		extts_clean_up(ptp_qoriq, 0, true);
+
+	if (status & DPRTC_EVENT_ETS2)
+		extts_clean_up(ptp_qoriq, 1, true);
+
 	err = dprtc_clear_irq_status(mc_dev->mc_io, 0, mc_dev->mc_handle,
 				     DPRTC_IRQ_INDEX, status);
 	if (unlikely(err)) {

drivers/net/ethernet/freescale/dpaa2/dprtc-cmd.h

@@ -9,17 +9,19 @@
 
 /* Command versioning */
 #define DPRTC_CMD_BASE_VERSION		1
+#define DPRTC_CMD_VERSION_2		2
 #define DPRTC_CMD_ID_OFFSET		4
 
 #define DPRTC_CMD(id)	(((id) << DPRTC_CMD_ID_OFFSET) | DPRTC_CMD_BASE_VERSION)
+#define DPRTC_CMD_V2(id) (((id) << DPRTC_CMD_ID_OFFSET) | DPRTC_CMD_VERSION_2)
 
 /* Command IDs */
 #define DPRTC_CMDID_CLOSE			DPRTC_CMD(0x800)
 #define DPRTC_CMDID_OPEN			DPRTC_CMD(0x810)
 
 #define DPRTC_CMDID_SET_IRQ_ENABLE		DPRTC_CMD(0x012)
 #define DPRTC_CMDID_GET_IRQ_ENABLE		DPRTC_CMD(0x013)
-#define DPRTC_CMDID_SET_IRQ_MASK		DPRTC_CMD(0x014)
+#define DPRTC_CMDID_SET_IRQ_MASK		DPRTC_CMD_V2(0x014)
 #define DPRTC_CMDID_GET_IRQ_MASK		DPRTC_CMD(0x015)
 #define DPRTC_CMDID_GET_IRQ_STATUS		DPRTC_CMD(0x016)
 #define DPRTC_CMDID_CLEAR_IRQ_STATUS		DPRTC_CMD(0x017)

drivers/net/ethernet/freescale/dpaa2/dprtc.h

@@ -20,6 +20,8 @@ struct fsl_mc_io;
 #define DPRTC_IRQ_INDEX		0
 
 #define DPRTC_EVENT_PPS		0x08000000
+#define DPRTC_EVENT_ETS1	0x00800000
+#define DPRTC_EVENT_ETS2	0x00400000
 
 int dprtc_open(struct fsl_mc_io *mc_io,
 	       u32 cmd_flags,