| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* Copyright (C) 2018-2021, Intel Corporation. */ |
| |
| #ifndef _ICE_GNSS_H_ |
| #define _ICE_GNSS_H_ |
| |
| #include <linux/tty.h> |
| #include <linux/tty_flip.h> |
| |
| #define ICE_E810T_GNSS_I2C_BUS 0x2 |
| #define ICE_GNSS_UBX_I2C_BUS_ADDR 0x42 |
| /* Data length register is big endian */ |
| #define ICE_GNSS_UBX_DATA_LEN_H 0xFD |
| #define ICE_GNSS_UBX_DATA_LEN_WIDTH 2 |
| #define ICE_GNSS_UBX_EMPTY_DATA 0xFF |
| #define ICE_GNSS_TIMER_DELAY_TIME (HZ / 10) /* 0.1 second per message */ |
| #define ICE_MAX_I2C_DATA_SIZE FIELD_MAX(ICE_AQC_I2C_DATA_SIZE_M) |
| #define ICE_MAX_UBX_READ_TRIES 255 |
| |
| /** |
| * struct gnss_serial - data used to initialize GNSS TTY port |
| * @back: back pointer to PF |
| * @tty: pointer to the tty for this device |
| * @open_count: number of times this port has been opened |
| * @gnss_mutex: gnss_mutex used to protect GNSS serial operations |
| * @kworker: kwork thread for handling periodic work |
| * @read_work: read_work function for handling GNSS reads |
| */ |
| struct gnss_serial { |
| struct ice_pf *back; |
| struct tty_struct *tty; |
| int open_count; |
| struct mutex gnss_mutex; /* protects GNSS serial structure */ |
| struct kthread_worker *kworker; |
| struct kthread_delayed_work read_work; |
| }; |
| |
| #if IS_ENABLED(CONFIG_TTY) |
| void ice_gnss_init(struct ice_pf *pf); |
| void ice_gnss_exit(struct ice_pf *pf); |
| bool ice_gnss_is_gps_present(struct ice_hw *hw); |
| #else |
| static inline void ice_gnss_init(struct ice_pf *pf) { } |
| static inline void ice_gnss_exit(struct ice_pf *pf) { } |
| static inline bool ice_gnss_is_gps_present(struct ice_hw *hw) |
| { |
| return false; |
| } |
| #endif /* IS_ENABLED(CONFIG_TTY) */ |
| #endif /* _ICE_GNSS_H_ */ |
