[PATCH 8/9] can: kvaser_pciefd: Expose device firmware version via devlink info_get()

[Jimmy Assarsson <extja@kvaser.com>]

Expose device firmware version via devlink info_get().

Example output:
$ devlink dev
pci/0000:07:00.0
pci/0000:08:00.0
pci/0000:09:00.0

$ devlink dev info
pci/0000:07:00.0:
  driver kvaser_pciefd
  versions:
      running:
        fw 1.3.75
pci/0000:08:00.0:
  driver kvaser_pciefd
  versions:
      running:
        fw 2.4.29
pci/0000:09:00.0:
  driver kvaser_pciefd
  versions:
      running:
        fw 1.3.72

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
---
 .../can/kvaser_pciefd/kvaser_pciefd_devlink.c | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/drivers/net/can/kvaser_pciefd/kvaser_pciefd_devlink.c b/drivers/net/can/kvaser_pciefd/kvaser_pciefd_devlink.c
index 8145d25943de..b6d3745089d4 100644
--- a/drivers/net/can/kvaser_pciefd/kvaser_pciefd_devlink.c
+++ b/drivers/net/can/kvaser_pciefd/kvaser_pciefd_devlink.c
@@ -4,7 +4,33 @@
  * Copyright (C) 2025 KVASER AB, Sweden. All rights reserved.
  */
 
+#include "kvaser_pciefd.h"
+
 #include <net/devlink.h>
 
+static int kvaser_pciefd_devlink_info_get(struct devlink *devlink,
+					  struct devlink_info_req *req,
+					  struct netlink_ext_ack *extack)
+{
+	struct kvaser_pciefd *pcie = devlink_priv(devlink);
+	char buf[14]; /* xxx.xxx.xxxxx */
+	int ret;
+
+	if (pcie->fw_version.major) {
+		snprintf(buf, sizeof(buf), "%u.%u.%u",
+			 pcie->fw_version.major,
+			 pcie->fw_version.minor,
+			 pcie->fw_version.build);
+		ret = devlink_info_version_running_put(req,
+						       DEVLINK_INFO_VERSION_GENERIC_FW,
+						       buf);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
 const struct devlink_ops kvaser_pciefd_devlink_ops = {
+	.info_get = kvaser_pciefd_devlink_info_get,
 };
-- 
2.49.0