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/* SPDX-License-Identifier: GPL-2.0
* Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com>
*/
#ifndef _SJA1105_PTP_H
#define _SJA1105_PTP_H
#if IS_ENABLED(CONFIG_NET_DSA_SJA1105_PTP)
/* Timestamps are in units of 8 ns clock ticks (equivalent to
* a fixed 125 MHz clock).
*/
#define SJA1105_TICK_NS 8
static inline s64 ns_to_sja1105_ticks(s64 ns)
{
return ns / SJA1105_TICK_NS;
}
static inline s64 sja1105_ticks_to_ns(s64 ticks)
{
return ticks * SJA1105_TICK_NS;
}
struct sja1105_ptp_cmd {
u64 resptp; /* reset */
u64 corrclk4ts; /* use the corrected clock for timestamps */
u64 ptpclkadd; /* enum sja1105_ptp_clk_mode */
};
struct sja1105_ptp_data {
struct ptp_clock_info caps;
struct ptp_clock *clock;
struct sja1105_ptp_cmd cmd;
/* Serializes all operations on the PTP hardware clock */
struct mutex lock;
};
int sja1105_ptp_clock_register(struct dsa_switch *ds);
void sja1105_ptp_clock_unregister(struct dsa_switch *ds);
int sja1105et_ptp_cmd(const struct dsa_switch *ds,
const struct sja1105_ptp_cmd *cmd);
int sja1105pqrs_ptp_cmd(const struct dsa_switch *ds,
const struct sja1105_ptp_cmd *cmd);
int sja1105_get_ts_info(struct dsa_switch *ds, int port,
struct ethtool_ts_info *ts);
void sja1105_ptp_txtstamp_skb(struct dsa_switch *ds, int slot,
struct sk_buff *clone);
int sja1105_ptp_reset(struct dsa_switch *ds);
bool sja1105_port_rxtstamp(struct dsa_switch *ds, int port,
struct sk_buff *skb, unsigned int type);
bool sja1105_port_txtstamp(struct dsa_switch *ds, int port,
struct sk_buff *skb, unsigned int type);
int sja1105_hwtstamp_get(struct dsa_switch *ds, int port, struct ifreq *ifr);
int sja1105_hwtstamp_set(struct dsa_switch *ds, int port, struct ifreq *ifr);
#else
struct sja1105_ptp_cmd;
/* Structures cannot be empty in C. Bah!
* Keep the mutex as the only element, which is a bit more difficult to
* refactor out of sja1105_main.c anyway.
*/
struct sja1105_ptp_data {
struct mutex lock;
};
static inline int sja1105_ptp_clock_register(struct dsa_switch *ds)
{
return 0;
}
static inline void sja1105_ptp_clock_unregister(struct dsa_switch *ds) { }
static inline void sja1105_ptp_txtstamp_skb(struct dsa_switch *ds, int slot,
struct sk_buff *clone)
{
}
static inline int sja1105_ptp_reset(struct dsa_switch *ds)
{
return 0;
}
#define sja1105et_ptp_cmd NULL
#define sja1105pqrs_ptp_cmd NULL
#define sja1105_get_ts_info NULL
#define sja1105_port_rxtstamp NULL
#define sja1105_port_txtstamp NULL
#define sja1105_hwtstamp_get NULL
#define sja1105_hwtstamp_set NULL
#endif /* IS_ENABLED(CONFIG_NET_DSA_SJA1105_PTP) */
#endif /* _SJA1105_PTP_H */
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