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 22 struct lan743x_adapter; 23 24 /* GPIO */ 25 struct lan743x_gpio { 26 /* gpio_lock: used to prevent concurrent access to gpio settings */ 27 spinlock_t gpio_lock; 28 29 int used_bits; 30 int output_bits; 31 int ptp_bits; 32 u32 gpio_cfg0; 33 u32 gpio_cfg1; 34 u32 gpio_cfg2; 35 u32 gpio_cfg3; 36 }; 37 38 int lan743x_gpio_init(struct lan743x_adapter *adapter); 39 40 void lan743x_ptp_isr(void *context); 41 bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter); 42 void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter); 43 void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter, 44 struct sk_buff *skb, bool ignore_sync); 45 int lan743x_ptp_init(struct lan743x_adapter *adapter); 46 int lan743x_ptp_open(struct lan743x_adapter *adapter); 47 void lan743x_ptp_close(struct lan743x_adapter *adapter); 48 void lan743x_ptp_update_latency(struct lan743x_adapter *adapter, 49 u32 link_speed); 50 51 int lan743x_ptp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); 52 53 #define LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS (4) 54 55 #define PTP_FLAG_PTP_CLOCK_REGISTERED BIT(1) 56 #define PTP_FLAG_ISR_ENABLED BIT(2) 57 58 struct lan743x_ptp_perout { 59 int event_ch; /* PTP event channel (0=channel A, 1=channel B) */ 60 int gpio_pin; /* GPIO pin where output appears */ 61 }; 62 63 struct lan743x_ptp { 64 int flags; 65 66 /* command_lock: used to prevent concurrent ptp commands */ 67 struct mutex command_lock; 68 69 struct ptp_clock *ptp_clock; 70 struct ptp_clock_info ptp_clock_info; 71 struct ptp_pin_desc pin_config[LAN743X_PTP_N_GPIO]; 72 73 unsigned long used_event_ch; 74 struct lan743x_ptp_perout perout[LAN743X_PTP_N_PEROUT]; 75 76 bool leds_multiplexed; 77 bool led_enabled[LAN7430_N_LED]; 78 79 /* tx_ts_lock: used to prevent concurrent access to timestamp arrays */ 80 spinlock_t tx_ts_lock; 81 int pending_tx_timestamps; 82 struct sk_buff *tx_ts_skb_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS]; 83 unsigned int tx_ts_ignore_sync_queue; 84 int tx_ts_skb_queue_size; 85 u32 tx_ts_seconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS]; 86 u32 tx_ts_nseconds_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS]; 87 u32 tx_ts_header_queue[LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS]; 88 int tx_ts_queue_size; 89 }; 90 91 #endif /* _LAN743X_PTP_H */ 92