143113ff7SKarol Kolacinski /* SPDX-License-Identifier: GPL-2.0 */ 2d6b98c8dSKarol Kolacinski /* Copyright (C) 2021-2022, Intel Corporation. */ 343113ff7SKarol Kolacinski 443113ff7SKarol Kolacinski #ifndef _ICE_GNSS_H_ 543113ff7SKarol Kolacinski #define _ICE_GNSS_H_ 643113ff7SKarol Kolacinski 743113ff7SKarol Kolacinski #define ICE_E810T_GNSS_I2C_BUS 0x2 8*0ec636e5SMichal Schmidt #define ICE_GNSS_POLL_DATA_DELAY_TIME (HZ / 50) /* poll every 20 ms */ 9d6b98c8dSKarol Kolacinski #define ICE_GNSS_TIMER_DELAY_TIME (HZ / 10) /* 0.1 second per message */ 10d6b98c8dSKarol Kolacinski #define ICE_GNSS_TTY_WRITE_BUF 250 11d6b98c8dSKarol Kolacinski #define ICE_MAX_I2C_DATA_SIZE FIELD_MAX(ICE_AQC_I2C_DATA_SIZE_M) 12d6b98c8dSKarol Kolacinski #define ICE_MAX_I2C_WRITE_BYTES 4 13d6b98c8dSKarol Kolacinski 14d6b98c8dSKarol Kolacinski /* u-blox ZED-F9T specific definitions */ 1543113ff7SKarol Kolacinski #define ICE_GNSS_UBX_I2C_BUS_ADDR 0x42 1643113ff7SKarol Kolacinski /* Data length register is big endian */ 1743113ff7SKarol Kolacinski #define ICE_GNSS_UBX_DATA_LEN_H 0xFD 1843113ff7SKarol Kolacinski #define ICE_GNSS_UBX_DATA_LEN_WIDTH 2 1943113ff7SKarol Kolacinski #define ICE_GNSS_UBX_EMPTY_DATA 0xFF 20d6b98c8dSKarol Kolacinski /* For u-blox writes are performed without address so the first byte to write is 21d6b98c8dSKarol Kolacinski * passed as I2C addr parameter. 22d6b98c8dSKarol Kolacinski */ 23d6b98c8dSKarol Kolacinski #define ICE_GNSS_UBX_WRITE_BYTES (ICE_MAX_I2C_WRITE_BYTES + 1) 24d6b98c8dSKarol Kolacinski 2543113ff7SKarol Kolacinski /** 2643113ff7SKarol Kolacinski * struct gnss_serial - data used to initialize GNSS TTY port 2743113ff7SKarol Kolacinski * @back: back pointer to PF 2843113ff7SKarol Kolacinski * @kworker: kwork thread for handling periodic work 2943113ff7SKarol Kolacinski * @read_work: read_work function for handling GNSS reads 3043113ff7SKarol Kolacinski */ 3143113ff7SKarol Kolacinski struct gnss_serial { 3243113ff7SKarol Kolacinski struct ice_pf *back; 3343113ff7SKarol Kolacinski struct kthread_worker *kworker; 3443113ff7SKarol Kolacinski struct kthread_delayed_work read_work; 3543113ff7SKarol Kolacinski }; 3643113ff7SKarol Kolacinski 37cf871006SJacob Keller #if IS_ENABLED(CONFIG_GNSS) 3843113ff7SKarol Kolacinski void ice_gnss_init(struct ice_pf *pf); 3943113ff7SKarol Kolacinski void ice_gnss_exit(struct ice_pf *pf); 4043113ff7SKarol Kolacinski bool ice_gnss_is_gps_present(struct ice_hw *hw); 4143113ff7SKarol Kolacinski #else ice_gnss_init(struct ice_pf * pf)4243113ff7SKarol Kolacinskistatic inline void ice_gnss_init(struct ice_pf *pf) { } ice_gnss_exit(struct ice_pf * pf)4343113ff7SKarol Kolacinskistatic inline void ice_gnss_exit(struct ice_pf *pf) { } ice_gnss_is_gps_present(struct ice_hw * hw)4443113ff7SKarol Kolacinskistatic inline bool ice_gnss_is_gps_present(struct ice_hw *hw) 4543113ff7SKarol Kolacinski { 4643113ff7SKarol Kolacinski return false; 4743113ff7SKarol Kolacinski } 48cf871006SJacob Keller #endif /* IS_ENABLED(CONFIG_GNSS) */ 4943113ff7SKarol Kolacinski #endif /* _ICE_GNSS_H_ */ 50