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46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
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/*
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* Copyright (C) 2025 Intel Corporation
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*/
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#ifndef __iwl_mld_ptp_h__
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#define __iwl_mld_ptp_h__
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#include <linux/ptp_clock_kernel.h>
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/**
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* struct ptp_data - PTP hardware clock data
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*
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* @ptp_clock: struct ptp_clock pointer returned by the ptp_clock_register()
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* function.
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* @ptp_clock_info: struct ptp_clock_info that describes a PTP hardware clock
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* @lock: protects the time adjustments data
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* @delta: delta between hardware clock and ptp clock in nanoseconds
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* @scale_update_gp2: GP2 time when the scale was last updated
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* @scale_update_adj_time_ns: adjusted time when the scale was last updated,
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* in nanoseconds
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* @scaled_freq: clock frequency offset, scaled to 65536000000
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* @last_gp2: the last GP2 reading from the hardware, used for tracking GP2
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* wraparounds
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* @wrap_counter: number of wraparounds since scale_update_adj_time_ns
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* @dwork: worker scheduled every 1 hour to detect workarounds
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*/
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struct ptp_data {
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struct ptp_clock *ptp_clock;
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struct ptp_clock_info ptp_clock_info;
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spinlock_t lock;
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s64 delta;
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u32 scale_update_gp2;
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u64 scale_update_adj_time_ns;
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u64 scaled_freq;
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u32 last_gp2;
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u32 wrap_counter;
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struct delayed_work dwork;
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};
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void iwl_mld_ptp_init(struct iwl_mld *mld);
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void iwl_mld_ptp_remove(struct iwl_mld *mld);
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u64 iwl_mld_ptp_get_adj_time(struct iwl_mld *mld, u64 base_time_ns);
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#endif /* __iwl_mld_ptp_h__ */
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