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/* SPDX-License-Identifier: GPL-2.0+ */
/* Copyright (C) 2018 Microchip Technology Inc. */
#ifndef _LAN743X_PTP_H
#define _LAN743X_PTP_H
#include "linux/ptp_clock_kernel.h"
#include "linux/netdevice.h"
#define LAN7430_N_LED 4
#define LAN7430_N_GPIO 4 /* multiplexed with PHY LEDs */
#define LAN7431_N_GPIO 12
#define LAN743X_PTP_N_GPIO LAN7431_N_GPIO
/* the number of periodic outputs is limited by number of
* PTP clock event channels
*/
#define LAN743X_PTP_N_EVENT_CHAN 2
#define LAN743X_PTP_N_PEROUT LAN743X_PTP_N_EVENT_CHAN
struct lan743x_adapter;
/* GPIO */
struct lan743x_gpio {
/* gpio_lock: used to prevent concurrent access to gpio settings */
spinlock_t gpio_lock;
int used_bits;
int output_bits;
int ptp_bits;
u32 gpio_cfg0;
u32 gpio_cfg1;
u32 gpio_cfg2;
u32 gpio_cfg3;
};
int lan743x_gpio_init(struct lan743x_adapter *adapter);
void lan743x_ptp_isr(void *context);
bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter);
void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter);
void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter,
struct sk_buff *skb, bool ignore_sync);
int lan743x_ptp_init(struct lan743x_adapter *adapter);
int lan743x_ptp_open(struct lan743x_adapter *adapter);
void lan743x_ptp_close(struct lan743x_adapter *adapter);
void lan743x_ptp_update_latency(struct lan743x_adapter *adapter,
u32 link_speed);
int lan743x_ptp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
#define LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS (4)
#define PTP_FLAG_PTP_CLOCK_REGISTERED BIT(1)
#define PTP_FLAG_ISR_ENABLED BIT(2)
struct lan743x_ptp_perout {
int event_ch; /* PTP event channel (0=channel A, 1=channel B) */
int gpio_pin; /* GPIO pin where output appears */
};
struct lan743x_ptp {
int flags;
/* command_lock: used to prevent concurrent ptp commands */
struct mutex command_lock;
struct ptp_clock *ptp_clock;
struct ptp_clock_info ptp_clock_info;
struct ptp_pin_desc pin_config[LAN743X_PTP_N_GPIO];
unsigned long used_event_ch;
struct lan743x_ptp_perout perout[LAN743X_PTP_N_PEROUT];
bool leds_multiplexed;
bool led_enabled[LAN7430_N_LED];
/* tx_ts_lock: used to prevent concurrent access to timestamp arrays */
spinlock_t tx_ts_lock;
int pending_tx_timestamps;
struct sk_buff *tx_ts_skb_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
unsigned int tx_ts_ignore_sync_queue;
int tx_ts_skb_queue_size;
u32 tx_ts_seconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
u32 tx_ts_nseconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
u32 tx_ts_header_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
int tx_ts_queue_size;
};
#endif /* _LAN743X_PTP_H */
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