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      1 /*	$NetBSD: i2c_subr.c,v 1.7 2025/09/23 12:37:43 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2003 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *      This product includes software developed for the NetBSD Project by
     20  *      Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #include <sys/cdefs.h>
     39 __KERNEL_RCSID(0, "$NetBSD: i2c_subr.c,v 1.7 2025/09/23 12:37:43 thorpej Exp $");
     40 
     41 #include <sys/param.h>
     42 #include <sys/device.h>
     43 #include <sys/module.h>
     44 
     45 #include <dev/i2c/i2cvar.h>
     46 
     47 MODULE(MODULE_CLASS_EXEC, i2c_subr, NULL);
     48 
     49 static int
     50 i2c_subr_modcmd(modcmd_t cmd, void *opaque)
     51 {
     52 
     53 	switch (cmd) {
     54 	case MODULE_CMD_INIT:
     55 	case MODULE_CMD_FINI:
     56 		return 0;
     57 	default:
     58 		return ENOTTY;
     59 	}
     60 }
     61 
     62 int
     63 iicbus_print(void *aux, const char *pnp)
     64 {
     65 	struct i2cbus_attach_args *iba = aux;
     66 	i2c_tag_t tag = iba->iba_tag;
     67 
     68 	if (pnp != NULL) {
     69 		aprint_normal("iic at %s", pnp);
     70 	}
     71 	if (tag->ic_channel != I2C_CHANNEL_DEFAULT) {
     72 		aprint_normal(" bus %d", tag->ic_channel);
     73 	}
     74 
     75 	return UNCONF;
     76 }
     77