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
imxi2c_match(device_t parent,cfdata_t cf,void * aux)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
imxi2c_attach(device_t parent,device_t self,void * aux)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