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a2fdb986b0
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>
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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*/
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#ifndef __PTP_NOTIFIER_H
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#define __PTP_NOTIFIER_H
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#include <linux/types.h>
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#include <linux/notifier.h>
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#include <linux/etherdevice.h>
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#define PTP_HWTIME 1
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#define PTP_TSC_HWTIME 2
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#define TSC_HIGH_SHIFT 32U
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/** Max of 5 interfaces created per IP multiply by number of IP */
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#define MAX_MAC_INSTANCES 25
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/**
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* @brief ptp_tsc_data - Struture used to store TSC and PTP time
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* information.
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*/
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struct ptp_tsc_data {
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/** PTP TimeStamp in nSec*/
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u64 ptp_ts;
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/** TSC TimeStamp in nSec*/
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u64 tsc_ts;
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};
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/* register / unregister HW time source */
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void tegra_register_hwtime_source(int (*func)(struct net_device *, void *, int),
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struct net_device *dev);
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void tegra_unregister_hwtime_source(struct net_device *dev);
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/* clients registering / unregistering for time update events */
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int tegra_register_hwtime_notifier(struct notifier_block *nb);
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int tegra_unregister_hwtime_notifier(struct notifier_block *nb);
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/* Notify time updates to registered clients */
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int tegra_hwtime_notifier_call_chain(unsigned int val, void *v);
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/*
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* Get HW time counter.
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* Clients may call the API every anytime PTP/TSC time is needed.
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* If HW time source is not registered, returns -EINVAL
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*/
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int tegra_get_hwtime(const char *intf_name, void *ts, int ts_type);
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#endif /* __PTP_NOTIFIER_H */
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