tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#define LAN7430_N_LED 4
11#define LAN7430_N_GPIO 4 /* multiplexed with PHY LEDs */
12#define LAN7431_N_GPIO 12
13
14#define LAN743X_PTP_N_GPIO LAN7431_N_GPIO
15
16/* the number of periodic outputs is limited by number of
17 * PTP clock event channels
18 */
19#define LAN743X_PTP_N_EVENT_CHAN 2
20#define LAN743X_PTP_N_PEROUT LAN743X_PTP_N_EVENT_CHAN
21#define PCI11X1X_PTP_IO_MAX_CHANNELS 8
22#define LAN743X_PTP_N_EXTTS PCI11X1X_PTP_IO_MAX_CHANNELS
23#define LAN743X_PTP_N_PPS 0
24#define PTP_CMD_CTL_TIMEOUT_CNT 50
25
26struct lan743x_adapter;
27
28/* GPIO */
29struct lan743x_gpio {
30 /* gpio_lock: used to prevent concurrent access to gpio settings */
31 spinlock_t gpio_lock;
32
33 int used_bits;
34 int output_bits;
35 int ptp_bits;
36 u32 gpio_cfg0;
37 u32 gpio_cfg1;
38 u32 gpio_cfg2;
39 u32 gpio_cfg3;
40};
41
42int lan743x_gpio_init(struct lan743x_adapter *adapter);
43
44void lan743x_ptp_isr(void *context);
45bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter);
46void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter);
47void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter,
48 struct sk_buff *skb, bool ignore_sync);
49int lan743x_ptp_init(struct lan743x_adapter *adapter);
50int lan743x_ptp_open(struct lan743x_adapter *adapter);
51void lan743x_ptp_close(struct lan743x_adapter *adapter);
52void lan743x_ptp_update_latency(struct lan743x_adapter *adapter,
53 u32 link_speed);
54int lan743x_ptp_hwtstamp_get(struct net_device *netdev,
55 struct kernel_hwtstamp_config *config);
56int lan743x_ptp_hwtstamp_set(struct net_device *netdev,
57 struct kernel_hwtstamp_config *config,
58 struct netlink_ext_ack *extack);
59
60#define LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS (4)
61
62#define PTP_FLAG_PTP_CLOCK_REGISTERED BIT(1)
63#define PTP_FLAG_ISR_ENABLED BIT(2)
64
65struct lan743x_ptp_perout {
66 int event_ch; /* PTP event channel (0=channel A, 1=channel B) */
67 int gpio_pin; /* GPIO pin where output appears */
68};
69
70struct lan743x_extts {
71 int flags;
72 struct timespec64 ts;
73};
74
75struct lan743x_ptp {
76 int flags;
77
78 /* command_lock: used to prevent concurrent ptp commands */
79 struct mutex command_lock;
80
81 struct ptp_clock *ptp_clock;
82 struct ptp_clock_info ptp_clock_info;
83 struct ptp_pin_desc pin_config[LAN743X_PTP_N_GPIO];
84
85 unsigned long used_event_ch;
86 struct lan743x_ptp_perout perout[LAN743X_PTP_N_PEROUT];
87 int ptp_io_perout[LAN743X_PTP_N_PEROUT]; /* PTP event channel (0=channel A, 1=channel B) */
88 struct lan743x_extts extts[LAN743X_PTP_N_EXTTS];
89
90 bool leds_multiplexed;
91 bool led_enabled[LAN7430_N_LED];
92
93 /* tx_ts_lock: used to prevent concurrent access to timestamp arrays */
94 spinlock_t tx_ts_lock;
95 int pending_tx_timestamps;
96 struct sk_buff *tx_ts_skb_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
97 unsigned int tx_ts_ignore_sync_queue;
98 int tx_ts_skb_queue_size;
99 u32 tx_ts_seconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
100 u32 tx_ts_nseconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
101 u32 tx_ts_header_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS];
102 int tx_ts_queue_size;
103};
104
105#endif /* _LAN743X_PTP_H */