nvidia-oot: add nvpps and ptp driver

Using this patch we are adding support for
ptp and nvpps driver in oot kernel.

JIRA ESLC-6885

Signed-off-by: Manish Bhardwaj <mbhardwaj@nvidia.com>
Change-Id: Id47ac5602d11ce417f9d421b4f672578922ca94f
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2785318
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Reviewed-by: David Tao <tehyut@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>

include/linux/platform/tegra/ptp-notifier.h

@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ */
+
+#ifndef __PTP_NOTIFIER_H
+#define __PTP_NOTIFIER_H
+
+#include <linux/types.h>
+#include <linux/notifier.h>
+#include <linux/etherdevice.h>
+
+#define PTP_HWTIME		1
+#define PTP_TSC_HWTIME		2
+#define TSC_HIGH_SHIFT		32U
+
+/** Max of 5 interfaces created per IP multiply by number of IP */
+#define MAX_MAC_INSTANCES	25
+
+/**
+ * @brief ptp_tsc_data - Struture used to store TSC and PTP time
+ * information.
+ */
+struct ptp_tsc_data {
+	/** PTP TimeStamp in nSec*/
+	u64 ptp_ts;
+	/** TSC TimeStamp in nSec*/
+	u64 tsc_ts;
+};
+
+/* register / unregister HW time source */
+void tegra_register_hwtime_source(int (*func)(struct net_device *, void *, int),
+				  struct net_device *dev);
+void tegra_unregister_hwtime_source(struct net_device *dev);
+
+/* clients registering / unregistering for time update events */
+int tegra_register_hwtime_notifier(struct notifier_block *nb);
+int tegra_unregister_hwtime_notifier(struct notifier_block *nb);
+
+/* Notify time updates to registered clients */
+int tegra_hwtime_notifier_call_chain(unsigned int val, void *v);
+
+/*
+ * Get HW time counter.
+ * Clients may call the API every anytime PTP/TSC time is needed.
+ * If HW time source is not registered, returns -EINVAL
+ */
+int tegra_get_hwtime(const char *intf_name, void *ts, int ts_type);
+
+#endif /* __PTP_NOTIFIER_H */