1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* Copyright (C) 2025 Intel Corporation
*/
#ifndef __iwl_mld_ptp_h__
#define __iwl_mld_ptp_h__
#include <linux/ptp_clock_kernel.h>
/**
* struct ptp_data - PTP hardware clock data
*
* @ptp_clock: struct ptp_clock pointer returned by the ptp_clock_register()
* function.
* @ptp_clock_info: struct ptp_clock_info that describes a PTP hardware clock
* @lock: protects the time adjustments data
* @delta: delta between hardware clock and ptp clock in nanoseconds
* @scale_update_gp2: GP2 time when the scale was last updated
* @scale_update_adj_time_ns: adjusted time when the scale was last updated,
* in nanoseconds
* @scaled_freq: clock frequency offset, scaled to 65536000000
* @last_gp2: the last GP2 reading from the hardware, used for tracking GP2
* wraparounds
* @wrap_counter: number of wraparounds since scale_update_adj_time_ns
* @dwork: worker scheduled every 1 hour to detect workarounds
*/
struct ptp_data {
struct ptp_clock *ptp_clock;
struct ptp_clock_info ptp_clock_info;
spinlock_t lock;
s64 delta;
u32 scale_update_gp2;
u64 scale_update_adj_time_ns;
u64 scaled_freq;
u32 last_gp2;
u32 wrap_counter;
struct delayed_work dwork;
};
void iwl_mld_ptp_init(struct iwl_mld *mld);
void iwl_mld_ptp_remove(struct iwl_mld *mld);
u64 iwl_mld_ptp_get_adj_time(struct iwl_mld *mld, u64 base_time_ns);
#endif /* __iwl_mld_ptp_h__ */
|
