1/* SPDX-License-Identifier: GPL-2.0+ */
 2/* Copyright (C) 2018 Microchip Technology Inc. */
 3
 4#ifndef _LAN743X_PTP_H
 5#define _LAN743X_PTP_H
 6
 7#include "linux/ptp_clock_kernel.h"
 8#include "linux/netdevice.h"
 9
10struct lan743x_adapter;
11
12/* GPIO */
13struct lan743x_gpio {
14	/* gpio_lock: used to prevent concurrent access to gpio settings */
15	spinlock_t gpio_lock;
16
17	int used_bits;
18	int output_bits;
19	int ptp_bits;
20	u32 gpio_cfg0;
21	u32 gpio_cfg1;
22	u32 gpio_cfg2;
23	u32 gpio_cfg3;
24};
25
26int lan743x_gpio_init(struct lan743x_adapter *adapter);
27
28void lan743x_ptp_isr(void *context);
29bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter);
30void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter);
31void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter,
32				  struct sk_buff *skb, bool ignore_sync);
33int lan743x_ptp_init(struct lan743x_adapter *adapter);
34int lan743x_ptp_open(struct lan743x_adapter *adapter);
35void lan743x_ptp_close(struct lan743x_adapter *adapter);
36void lan743x_ptp_update_latency(struct lan743x_adapter *adapter,
37				u32 link_speed);
38
39int lan743x_ptp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
40
41#define LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS (4)
42
43#define PTP_FLAG_PTP_CLOCK_REGISTERED	BIT(1)
44#define PTP_FLAG_ISR_ENABLED			BIT(2)
45
46struct lan743x_ptp {
47	int flags;
48
49	/* command_lock: used to prevent concurrent ptp commands */
50	struct mutex	command_lock;
51
52	struct ptp_clock *ptp_clock;
53	struct ptp_clock_info ptp_clock_info;
54	struct ptp_pin_desc pin_config[1];
55
56#define LAN743X_PTP_NUMBER_OF_EVENT_CHANNELS (2)
57	unsigned long used_event_ch;
58
59	int perout_event_ch;
60	int perout_gpio_bit;
61
62	/* tx_ts_lock: used to prevent concurrent access to timestamp arrays */
63	spinlock_t	tx_ts_lock;
64	int pending_tx_timestamps;
65	struct sk_buff *tx_ts_skb_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
66	unsigned int	tx_ts_ignore_sync_queue;
67	int tx_ts_skb_queue_size;
68	u32 tx_ts_seconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
69	u32 tx_ts_nseconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
70	u32 tx_ts_header_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
71	int tx_ts_queue_size;
72};
73
74#endif /* _LAN743X_PTP_H */