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 
10 struct lan743x_adapter;
11 
12 /* GPIO */
13 struct 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 
26 int lan743x_gpio_init(struct lan743x_adapter *adapter);
27 
28 void lan743x_ptp_isr(void *context);
29 bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter);
30 void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter);
31 void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter,
32 				  struct sk_buff *skb, bool ignore_sync);
33 int lan743x_ptp_init(struct lan743x_adapter *adapter);
34 int lan743x_ptp_open(struct lan743x_adapter *adapter);
35 void lan743x_ptp_close(struct lan743x_adapter *adapter);
36 void lan743x_ptp_update_latency(struct lan743x_adapter *adapter,
37 				u32 link_speed);
38 
39 int 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 
46 struct 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 */
75