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      1 /*	$NetBSD: imx51_i2c.c,v 1.3 2022/07/22 23:43:23 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2012, 2015 Genetec Corporation.  All rights reserved.
      5  * Written by Hashimoto Kenichi for Genetec Corporation.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: imx51_i2c.c,v 1.3 2022/07/22 23:43:23 thorpej Exp $");
     31 
     32 #include "opt_imx.h"
     33 
     34 #include <sys/param.h>
     35 #include <sys/bus.h>
     36 #include <sys/device.h>
     37 
     38 #include <arm/imx/imx51reg.h>
     39 #include <arm/imx/imx51var.h>
     40 #include <arm/imx/imx51_ccmvar.h>
     41 #include <arm/imx/imxi2cvar.h>
     42 
     43 int
     44 imxi2c_match(device_t parent, cfdata_t cf, void *aux)
     45 {
     46 	struct axi_attach_args *aa = aux;
     47 
     48 	switch (aa->aa_addr) {
     49 	case I2C1_BASE:
     50 	case I2C2_BASE:
     51 #ifdef IMX50
     52 	case I2C3_BASE:
     53 #endif
     54 		return 1;
     55 	}
     56 
     57 	return 0;
     58 }
     59 
     60 void
     61 imxi2c_attach(device_t parent, device_t self, void *aux)
     62 {
     63 	struct axi_attach_args * aa = aux;
     64 
     65 	if (aa->aa_size <= 0)
     66 		aa->aa_size = I2C_SIZE;
     67 
     68 	imxi2c_attach_common(self,
     69 	    aa->aa_iot, aa->aa_addr, aa->aa_size,
     70 	    imx51_get_clock(IMX51CLK_PERCLK_ROOT), 400000);
     71 }
     72