mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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e2c6737e6e
Don't check if the device type is E810T as non-E810T devices can support GNSS too and PCA9575 check is enough to determine if GNSS is present or not. Rename ice_gnss_is_gps_present() to ice_gnss_is_module_present() because GNSS module supports multiple GNSS providers, not only GPS. Move functions related to PCA9575 from ice_ptp_hw.c to ice_common.c to be able to access them when PTP is disabled in the kernel, but GNSS is enabled. Remove logical AND with ICE_AQC_LINK_TOPO_NODE_TYPE_M in ice_get_pca9575_handle(), which has no effect, and reorder device type checks to check the device_id first, then set other variables. Signed-off-by: Karol Kolacinski <karol.kolacinski@intel.com> Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2021-2022, Intel Corporation. */
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#ifndef _ICE_GNSS_H_
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#define _ICE_GNSS_H_
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#define ICE_E810T_GNSS_I2C_BUS 0x2
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#define ICE_GNSS_POLL_DATA_DELAY_TIME (HZ / 50) /* poll every 20 ms */
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#define ICE_GNSS_TIMER_DELAY_TIME (HZ / 10) /* 0.1 second per message */
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#define ICE_GNSS_TTY_WRITE_BUF 250
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#define ICE_MAX_I2C_DATA_SIZE FIELD_MAX(ICE_AQC_I2C_DATA_SIZE_M)
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#define ICE_MAX_I2C_WRITE_BYTES 4
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/* u-blox ZED-F9T specific definitions */
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#define ICE_GNSS_UBX_I2C_BUS_ADDR 0x42
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/* Data length register is big endian */
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#define ICE_GNSS_UBX_DATA_LEN_H 0xFD
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#define ICE_GNSS_UBX_DATA_LEN_WIDTH 2
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#define ICE_GNSS_UBX_EMPTY_DATA 0xFF
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/* For u-blox writes are performed without address so the first byte to write is
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* passed as I2C addr parameter.
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*/
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#define ICE_GNSS_UBX_WRITE_BYTES (ICE_MAX_I2C_WRITE_BYTES + 1)
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/**
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* struct gnss_serial - data used to initialize GNSS TTY port
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* @back: back pointer to PF
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* @kworker: kwork thread for handling periodic work
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* @read_work: read_work function for handling GNSS reads
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*/
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struct gnss_serial {
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struct ice_pf *back;
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struct kthread_worker *kworker;
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struct kthread_delayed_work read_work;
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};
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#if IS_ENABLED(CONFIG_GNSS)
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void ice_gnss_init(struct ice_pf *pf);
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void ice_gnss_exit(struct ice_pf *pf);
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bool ice_gnss_is_module_present(struct ice_hw *hw);
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#else
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static inline void ice_gnss_init(struct ice_pf *pf) { }
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static inline void ice_gnss_exit(struct ice_pf *pf) { }
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static inline bool ice_gnss_is_module_present(struct ice_hw *hw)
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{
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return false;
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}
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#endif /* IS_ENABLED(CONFIG_GNSS) */
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#endif /* _ICE_GNSS_H_ */
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