| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* Copyright (C) 2021-2022, Intel Corporation. */ |
| |
| #ifndef _ICE_GNSS_H_ |
| #define _ICE_GNSS_H_ |
| |
| #define ICE_E810T_GNSS_I2C_BUS 0x2 |
| #define ICE_GNSS_POLL_DATA_DELAY_TIME (HZ / 50) /* poll every 20 ms */ |
| #define ICE_GNSS_TIMER_DELAY_TIME (HZ / 10) /* 0.1 second per message */ |
| #define ICE_GNSS_TTY_WRITE_BUF 250 |
| #define ICE_MAX_I2C_DATA_SIZE FIELD_MAX(ICE_AQC_I2C_DATA_SIZE_M) |
| #define ICE_MAX_I2C_WRITE_BYTES 4 |
| |
| /* u-blox ZED-F9T specific definitions */ |
| #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 |
| /* For u-blox writes are performed without address so the first byte to write is |
| * passed as I2C addr parameter. |
| */ |
| #define ICE_GNSS_UBX_WRITE_BYTES (ICE_MAX_I2C_WRITE_BYTES + 1) |
| |
| /** |
| * struct gnss_serial - data used to initialize GNSS TTY port |
| * @back: back pointer to PF |
| * @kworker: kwork thread for handling periodic work |
| * @read_work: read_work function for handling GNSS reads |
| */ |
| struct gnss_serial { |
| struct ice_pf *back; |
| struct kthread_worker *kworker; |
| struct kthread_delayed_work read_work; |
| }; |
| |
| #if IS_ENABLED(CONFIG_GNSS) |
| 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_GNSS) */ |
| #endif /* _ICE_GNSS_H_ */ |
