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      1 /*	$NetBSD: sgp40var.h,v 1.1 2021/10/14 13:54:46 brad Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2021 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_I2C_SGP40VAR_H_
     20 #define _DEV_I2C_SGP40VAR_H_
     21 
     22 #define SGP40_NUM_SENSORS	1
     23 #define SGP40_VOC_SENSOR 0
     24 
     25 #define SGP40_DEFAULT_TEMP_COMP 25
     26 #define SGP40_DEFAULT_RH_COMP 50
     27 
     28 
     29 struct sgp40_sc {
     30 	int 		sc_sgp40debug;
     31 	device_t 	sc_dev;
     32 	i2c_tag_t 	sc_tag;
     33 	i2c_addr_t 	sc_addr;
     34 	kmutex_t        sc_threadmutex; /* for the measurement kthread */
     35 	kmutex_t 	sc_mutex; /* for reading the i2c bus */
     36 	kcondvar_t	sc_condvar;
     37 	struct lwp      *sc_thread;
     38 	int 		sc_numsensors;
     39 	struct sysmon_envsys *sc_sme;
     40 	struct sysctllog *sc_sgp40log;
     41 	envsys_data_t 	sc_sensors[SGP40_NUM_SENSORS];
     42 	uint16_t        sc_voc;
     43 	bool            sc_vocvalid;
     44 	bool 		sc_ignorecrc;
     45 	int 		sc_readattempts;
     46 	bool            sc_stopping;
     47 	int             sc_tempcomp;
     48 	int             sc_rhcomp;
     49 };
     50 
     51 struct sgp40_sensor {
     52 	const char     *desc;
     53 	enum envsys_units type;
     54 };
     55 
     56 struct sgp40_timing {
     57 	uint16_t cmd;
     58 	int     typicaldelay;
     59 };
     60 
     61 #endif
     62