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      1 /*	$NetBSD: emcfanvar.h,v 1.1 2025/03/11 13:56:46 brad Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2025 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_EMCFANVAR_H_
     20 #define _DEV_I2C_EMCFANVAR_H_
     21 
     22 #include <sys/gpio.h>
     23 #include <dev/gpio/gpiovar.h>
     24 
     25 #define EMCFAN_NUM_FANS 5
     26 #define EMCFAN_NUM_SENSORS 8 /* Up to 5 tachs, or 8 temperature zones (1 internal, 4 external,
     27 			      * 1 VIN4) and 2 tachs and some combos in between.
     28 			      */
     29 
     30 struct emcfan_sc;
     31 
     32 #define EMCFAN_INTERNAL_TEMP 0x01
     33 #define EMCFAN_VIN4_TEMP 0x02
     34 #define EMCFAN_MAX_PINS 6
     35 
     36 /* This supplements the envsys_data_t structure stored in the sc. */
     37 
     38 struct emcfan_sensor_instance {
     39 	uint8_t sc_i_flags;
     40 	int	sc_i_member;
     41 	int	sc_i_envnum;
     42 };
     43 
     44 struct emcfan_sc {
     45 	int 		sc_emcfandebug;
     46 	struct sysctllog *sc_emcfanlog;
     47 	device_t 	sc_dev;
     48 	i2c_tag_t 	sc_tag;
     49 	i2c_addr_t 	sc_addr;
     50 	int		sc_info_index;
     51 	bool		sc_dying;
     52 	bool		sc_opened;
     53 	kmutex_t 	sc_mutex;
     54 	struct sysmon_envsys *sc_sme;
     55 	int		sc_ftach;
     56 	bool		sc_vin4_temp;
     57 	int		sc_num_poles[EMCFAN_NUM_FANS];
     58 	struct emcfan_sensor_instance sc_sensor_instances[EMCFAN_NUM_SENSORS];
     59 	envsys_data_t		sc_sensors[EMCFAN_NUM_SENSORS];
     60 	device_t		sc_gpio_dev;
     61 	struct gpio_chipset_tag	sc_gpio_gc;
     62 	gpio_pin_t		sc_gpio_pins[EMCFAN_MAX_PINS];
     63 };
     64 
     65 #endif
     66