net: dsa: hellcreek: Report switch name and ID

Report the driver name, ASIC ID and the switch name via devlink. This is a
useful information for user space tooling.

Signed-off-by: Kurt Kanzenbach <kurt@kmk-computers.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/hirschmann/hellcreek.c

@@ -1082,6 +1082,22 @@ static int hellcreek_setup_fdb(struct hellcreek *hellcreek)
 	return ret;
 }
 
+static int hellcreek_devlink_info_get(struct dsa_switch *ds,
+				      struct devlink_info_req *req,
+				      struct netlink_ext_ack *extack)
+{
+	struct hellcreek *hellcreek = ds->priv;
+	int ret;
+
+	ret = devlink_info_driver_name_put(req, "hellcreek");
+	if (ret)
+		return ret;
+
+	return devlink_info_version_fixed_put(req,
+					      DEVLINK_INFO_VERSION_GENERIC_ASIC_ID,
+					      hellcreek->pdata->name);
+}
+
 static u64 hellcreek_devlink_vlan_table_get(void *priv)
 {
 	struct hellcreek *hellcreek = priv;
@@ -1732,6 +1748,7 @@ static int hellcreek_port_setup_tc(struct dsa_switch *ds, int port,
 }
 
 static const struct dsa_switch_ops hellcreek_ds_ops = {
+	.devlink_info_get      = hellcreek_devlink_info_get,
 	.get_ethtool_stats     = hellcreek_get_ethtool_stats,
 	.get_sset_count	       = hellcreek_get_sset_count,
 	.get_strings	       = hellcreek_get_strings,
@@ -1909,6 +1926,7 @@ static int hellcreek_remove(struct platform_device *pdev)
 }
 
 static const struct hellcreek_platform_data de1soc_r1_pdata = {
+	.name		 = "r4c30",
 	.num_ports	 = 4,
 	.is_100_mbits	 = 1,
 	.qbv_support	 = 1,

include/linux/platform_data/hirschmann-hellcreek.h

@@ -12,6 +12,7 @@
 #include <linux/types.h>
 
 struct hellcreek_platform_data {
+	const char *name;	/* Switch name */
 	int num_ports;		/* Amount of switch ports */
 	int is_100_mbits;	/* Is it configured to 100 or 1000 mbit/s */
 	int qbv_support;	/* Qbv support on front TSN ports */