dpaa_eth: add the get_ts_info interface for ethtool

Added the get_ts_info interface for ethtool to check
the timestamping capability.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c b/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
index 2f933b6..3184c8f 100644 (file)
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
@@ -32,6 +32,9 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/string.h>
+#include <linux/of_platform.h>
+#include <linux/net_tstamp.h>
+#include <linux/fsl/ptp_qoriq.h>
 
 #include "dpaa_eth.h"
 #include "mac.h"
@@ -515,6 +518,41 @@ static int dpaa_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
        return ret;
 }
 
+static int dpaa_get_ts_info(struct net_device *net_dev,
+                           struct ethtool_ts_info *info)
+{
+       struct device *dev = net_dev->dev.parent;
+       struct device_node *mac_node = dev->of_node;
+       struct device_node *fman_node = NULL, *ptp_node = NULL;
+       struct platform_device *ptp_dev = NULL;
+       struct qoriq_ptp *ptp = NULL;
+
+       info->phc_index = -1;
+
+       fman_node = of_get_parent(mac_node);
+       if (fman_node)
+               ptp_node = of_parse_phandle(fman_node, "ptimer-handle", 0);
+
+       if (ptp_node)
+               ptp_dev = of_find_device_by_node(ptp_node);
+
+       if (ptp_dev)
+               ptp = platform_get_drvdata(ptp_dev);
+
+       if (ptp)
+               info->phc_index = ptp->phc_index;
+
+       info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
+                               SOF_TIMESTAMPING_RX_HARDWARE |
+                               SOF_TIMESTAMPING_RAW_HARDWARE;
+       info->tx_types = (1 << HWTSTAMP_TX_OFF) |
+                        (1 << HWTSTAMP_TX_ON);
+       info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
+                          (1 << HWTSTAMP_FILTER_ALL);
+
+       return 0;
+}
+
 const struct ethtool_ops dpaa_ethtool_ops = {
        .get_drvinfo = dpaa_get_drvinfo,
        .get_msglevel = dpaa_get_msglevel,
@@ -530,4 +568,5 @@ const struct ethtool_ops dpaa_ethtool_ops = {
        .set_link_ksettings = dpaa_set_link_ksettings,
        .get_rxnfc = dpaa_get_rxnfc,
        .set_rxnfc = dpaa_set_rxnfc,
+       .get_ts_info = dpaa_get_ts_info,
 };