1 /*-
2 * Copyright (c) 2012 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Matt Thomas of 3am Software Foundry.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include "locators.h"
31
32 #include <sys/cdefs.h>
33
34 __KERNEL_RCSID(1, "$NetBSD: bcm53xx_i2c.c,v 1.2 2014/02/19 22:21:16 matt Exp $");
35
36 #include <sys/param.h>
37 #include <sys/bus.h>
38 #include <sys/device.h>
39 #include <sys/intr.h>
40 #include <sys/systm.h>
41
42 #include <arm/broadcom/bcm53xx_reg.h>
43 #include <arm/broadcom/bcm53xx_var.h>
44
45 static int bcmi2c_ccb_match(device_t, cfdata_t, void *);
46 static void bcmi2c_ccb_attach(device_t, device_t, void *);
47
48 struct bcmi2c_softc {
49 device_t sc_dev;
50 bus_space_tag_t sc_bst;
51 bus_space_handle_t sc_bsh;
52 bus_dma_tag_t sc_dmat;
53 };
54
55 CFATTACH_DECL_NEW(bcmi2c_ccb, sizeof(struct bcmi2c_softc),
56 bcmi2c_ccb_match, bcmi2c_ccb_attach, NULL, NULL);
57
58 static int
bcmi2c_ccb_match(device_t parent,cfdata_t cf,void * aux)59 bcmi2c_ccb_match(device_t parent, cfdata_t cf, void *aux)
60 {
61 struct bcmccb_attach_args * const ccbaa = aux;
62 const struct bcm_locators * const loc = &ccbaa->ccbaa_loc;
63
64 if (strcmp(cf->cf_name, loc->loc_name))
65 return 0;
66
67 KASSERT(cf->cf_loc[BCMCCBCF_PORT] == BCMCCBCF_PORT_DEFAULT);
68
69 return 1;
70 }
71
72 static void
bcmi2c_ccb_attach(device_t parent,device_t self,void * aux)73 bcmi2c_ccb_attach(device_t parent, device_t self, void *aux)
74 {
75 struct bcmi2c_softc * const sc = device_private(self);
76 struct bcmccb_attach_args * const ccbaa = aux;
77 const struct bcm_locators * const loc = &ccbaa->ccbaa_loc;
78
79 sc->sc_dev = self;
80
81 sc->sc_bst = ccbaa->ccbaa_ccb_bst;
82 sc->sc_dmat = ccbaa->ccbaa_dmat;
83 bus_space_subregion(sc->sc_bst, ccbaa->ccbaa_ccb_bsh,
84 loc->loc_offset, loc->loc_size, &sc->sc_bsh);
85
86 aprint_naive("\n");
87 aprint_normal("\n");
88 }
89