1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Marvell PTP driver 3 * 4 * Copyright (C) 2020 Marvell. 5 * 6 */ 7 8 #ifndef PTP_H 9 #define PTP_H 10 11 #include <linux/timecounter.h> 12 #include <linux/time64.h> 13 #include <linux/spinlock.h> 14 15 struct ptp { 16 struct pci_dev *pdev; 17 void __iomem *reg_base; 18 u64 (*read_ptp_tstmp)(struct ptp *ptp); 19 spinlock_t ptp_lock; /* lock */ 20 struct hrtimer hrtimer; 21 ktime_t last_ts; 22 u32 clock_rate; 23 u32 clock_period; 24 }; 25 26 struct ptp *ptp_get(void); 27 void ptp_put(struct ptp *ptp); 28 void ptp_start(struct ptp *ptp, u64 sclk, u32 ext_clk_freq, u32 extts); 29 30 extern struct pci_driver ptp_driver; 31 32 #endif 33