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      1 /*	$NetBSD: scmdvar.h,v 1.1 2021/12/07 17:39:54 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_SCMDVAR_H_
     20 #define _DEV_SCMDVAR_H_
     21 
     22 struct scmd_sc {
     23 	int 		sc_scmddebug;
     24 	device_t 	sc_dev;
     25 	i2c_tag_t 	sc_tag;
     26 	i2c_addr_t 	sc_addr;
     27 	struct spi_handle *sc_sh;
     28 	kmutex_t 	sc_mutex; /* for reading the i2c or spi bus */
     29 	kmutex_t        sc_dying_mutex; /* for cleaning up */
     30 	kmutex_t 	sc_condmutex; /* for waiting a long time */
     31 	kcondvar_t	sc_condvar;
     32 	kcondvar_t	sc_cond_dying; /* interlock when cleaning up */
     33 	struct sysctllog *sc_scmdlog;
     34 	uint8_t		sc_topaddr;
     35 	bool		sc_dying;
     36 	bool		sc_opened;
     37 	void		(*sc_func_attach)(struct scmd_sc *);
     38 	int		(*sc_func_acquire_bus)(struct scmd_sc *);
     39 	void		(*sc_func_release_bus)(struct scmd_sc *);
     40 	int		(*sc_func_read_register)(struct scmd_sc *, uint8_t, uint8_t *);
     41 	int		(*sc_func_write_register)(struct scmd_sc *, uint8_t, uint8_t);
     42 };
     43 
     44 #endif
     45