/* SPDX-License-Identifier: GPL-2.0 */
/* Microchip KSZ PTP Implementation
 *
 * Copyright (C) 2020 ARRI Lighting
 * Copyright (C) 2022 Microchip Technology Inc.
 */

#ifndef _NET_DSA_DRIVERS_KSZ_PTP_H
#define _NET_DSA_DRIVERS_KSZ_PTP_H

#if IS_ENABLED(CONFIG_NET_DSA_MICROCHIP_KSZ_PTP)

#include <linux/ptp_clock_kernel.h>

#define KSZ_PTP_N_GPIO          2

enum ksz_ptp_tou_mode {
        KSZ_PTP_TOU_IDLE,
        KSZ_PTP_TOU_PEROUT,
};

struct ksz_ptp_data {
        struct ptp_clock_info caps;
        struct ptp_clock *clock;
        struct ptp_pin_desc pin_config[KSZ_PTP_N_GPIO];
        /* Serializes all operations on the PTP hardware clock */
        struct mutex lock;
        /* lock for accessing the clock_time */
        spinlock_t clock_lock;
        struct timespec64 clock_time;
        enum ksz_ptp_tou_mode tou_mode;
        struct timespec64 perout_target_time_first;  /* start of first pulse */
        struct timespec64 perout_period;
};

int ksz_ptp_clock_register(struct dsa_switch *ds);

void ksz_ptp_clock_unregister(struct dsa_switch *ds);

int ksz_get_ts_info(struct dsa_switch *ds, int port,
                    struct kernel_ethtool_ts_info *ts);
int ksz_hwtstamp_get(struct dsa_switch *ds, int port,
                     struct kernel_hwtstamp_config *config);
int ksz_hwtstamp_set(struct dsa_switch *ds, int port,
                     struct kernel_hwtstamp_config *config,
                     struct netlink_ext_ack *extack);
void ksz_port_txtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb);
void ksz_port_deferred_xmit(struct kthread_work *work);
bool ksz_port_rxtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb,
                       unsigned int type);
int ksz_ptp_irq_setup(struct dsa_switch *ds, u8 p);
void ksz_ptp_irq_free(struct dsa_switch *ds, u8 p);

#else

struct ksz_ptp_data {
        /* Serializes all operations on the PTP hardware clock */
        struct mutex lock;
};

static inline int ksz_ptp_clock_register(struct dsa_switch *ds)
{
        return 0;
}

static inline void ksz_ptp_clock_unregister(struct dsa_switch *ds) { }

static inline int ksz_ptp_irq_setup(struct dsa_switch *ds, u8 p)
{
        return 0;
}

static inline void ksz_ptp_irq_free(struct dsa_switch *ds, u8 p) {}

#define ksz_get_ts_info NULL

#define ksz_hwtstamp_get NULL

#define ksz_hwtstamp_set NULL

#define ksz_port_rxtstamp NULL

#define ksz_port_txtstamp NULL

#define ksz_port_deferred_xmit NULL

#endif  /* End of CONFIG_NET_DSA_MICROCHIP_KSZ_PTP */

#endif