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      1 /*	$NetBSD: aht20var.h,v 1.1 2022/11/17 19:20:06 brad 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_I2C_AHT20VAR_H_
     20 #define _DEV_I2C_AHT20VAR_H_
     21 
     22 #define AHT20_NUM_SENSORS	2
     23 #define AHT20_HUMIDITY_SENSOR 0
     24 #define AHT20_TEMP_SENSOR 1
     25 
     26 struct aht20_sc {
     27 	int 		sc_aht20debug;
     28 	device_t 	sc_dev;
     29 	i2c_tag_t 	sc_tag;
     30 	i2c_addr_t 	sc_addr;
     31 	kmutex_t 	sc_mutex;
     32 	int 		sc_numsensors;
     33 	struct sysmon_envsys *sc_sme;
     34 	struct sysctllog *sc_aht20log;
     35 	envsys_data_t 	sc_sensors[AHT20_NUM_SENSORS];
     36 	bool 		sc_ignorecrc;
     37 	int 		sc_readattempts;
     38 };
     39 
     40 struct aht20_sensor {
     41 	const char     *desc;
     42 	enum envsys_units type;
     43 };
     44 
     45 struct aht20_timing {
     46 	uint8_t cmd;
     47 	int     typicaldelay;
     48 };
     49 
     50 #endif
     51