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bmx280var.h revision 1.2 
      1 /*	$NetBSD: bmx280var.h,v 1.2 2025/09/13 15:55:45 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2022 Brad Spencer <brad (at) anduin.eldar.org>
      5  *
      6  * Permission to use, copy, modify, and distribute this software for any
      7  * purpose with or without fee is hereby granted, provided that the above
      8  * copyright notice and this permission notice appear in all copies.
      9  *
     10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     17  */
     18 
     19 #ifndef _DEV_IC_BMX280VAR_H_
     20 #define _DEV_IC_BMX280VAR_H_
     21 
     22 #define BMX280_NUM_SENSORS	3
     23 #define BMX280_TEMP_SENSOR 0
     24 #define BMX280_PRESSURE_SENSOR 1
     25 #define BMX280_HUMIDITY_SENSOR 2
     26 
     27 struct bmx280_calibration_blob {
     28 	uint16_t dig_T1;
     29 	int16_t dig_T2;
     30 	int16_t dig_T3;
     31 
     32 	uint16_t dig_P1;
     33 	int16_t dig_P2;
     34 	int16_t dig_P3;
     35 	int16_t dig_P4;
     36 	int16_t dig_P5;
     37 	int16_t dig_P6;
     38 	int16_t dig_P7;
     39 	int16_t dig_P8;
     40 	int16_t dig_P9;
     41 	uint8_t dig_H1;
     42 	int16_t dig_H2;
     43 	uint8_t dig_H3;
     44 	int16_t dig_H4;
     45 	int16_t dig_H5;
     46 	int8_t dig_H6;
     47 };
     48 
     49 struct bmx280_sc;
     50 
     51 struct bmx280_accessfuncs {
     52 	int		(*acquire_bus)(struct bmx280_sc *);
     53 	void		(*release_bus)(struct bmx280_sc *);
     54 	int		(*read_reg)(struct bmx280_sc *, uint8_t, uint8_t *,
     55 			    size_t);
     56 	int		(*write_reg)(struct bmx280_sc *, uint8_t *, size_t);
     57 };
     58 
     59 struct bmx280_sc {
     60 	int 		sc_bmx280debug;
     61 	device_t 	sc_dev;
     62 	const struct bmx280_accessfuncs *sc_funcs;
     63 
     64 	kmutex_t 	sc_mutex;
     65 	int 		sc_numsensors;
     66 	struct sysmon_envsys *sc_sme;
     67 	struct sysctllog *sc_bmx280log;
     68 	envsys_data_t 	sc_sensors[BMX280_NUM_SENSORS];
     69 	struct bmx280_calibration_blob	sc_cal_blob;
     70 	bool		sc_has_humidity;
     71 	int		sc_readattempts;
     72 	int		sc_osrs_t;
     73 	int		sc_osrs_p;
     74 	int		sc_osrs_h;
     75 	int		sc_irr_samples;
     76 	uint8_t		sc_previous_irr;
     77 	bool		sc_bmx280dump;
     78 	int		sc_waitfactor_t;
     79 	int		sc_waitfactor_p;
     80 	int		sc_waitfactor_h;
     81 };
     82 
     83 struct bmx280_sensor {
     84 	const char     *desc;
     85 	enum envsys_units type;
     86 };
     87 
     88 struct bmx280_osrs_list {
     89 	const int	text;
     90 	uint8_t		mask;
     91 };
     92 
     93 struct bmx280_irr_list {
     94 	const int	text;
     95 	uint8_t		mask;
     96 };
     97 
     98 void	bmx280_attach(struct bmx280_sc *);
     99 
    100 #endif
    101