2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2003-2012 Broadcom Corporation
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
18 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
20 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
25 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
38 #include <sys/mutex.h>
41 #include <dev/iicbus/iicbus.h>
42 #include <dev/iicbus/iiconf.h>
44 #include <dev/pci/pcireg.h>
45 #include <dev/pci/pcivar.h>
47 #include "iicbus_if.h"
51 iicoc_detach(device_t dev)
53 struct iicoc_softc *sc;
55 sc = device_get_softc(dev);
56 device_delete_children(dev);
57 bus_generic_detach(dev);
58 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem_res);
59 mtx_destroy(&sc->sc_mtx);
65 * We add all the devices which we know about.
66 * The generic attach routine will attach them if they are alive.
69 iicoc_attach(device_t dev)
71 struct iicoc_softc *sc;
73 sc = device_get_softc(dev);
76 mtx_init(&sc->sc_mtx, "iicoc", "iicoc", MTX_DEF);
78 sc->mem_res = bus_alloc_resource_anywhere(dev,
79 SYS_RES_MEMORY, &sc->mem_rid, 0x100, RF_ACTIVE);
81 if (sc->mem_res == NULL) {
82 device_printf(dev, "Could not allocate bus resource.\n");
86 sc->iicbus = device_add_child(dev, "iicbus", -1);
87 if (sc->iicbus == NULL) {
88 device_printf(dev, "Could not allocate iicbus instance.\n");
89 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
91 mtx_destroy(&sc->sc_mtx);
94 bus_generic_attach(dev);
100 iicoc_probe(device_t dev)
102 struct iicoc_softc *sc;
104 sc = device_get_softc(dev);
105 if ((pci_get_vendor(dev) == 0x184e) &&
106 (pci_get_device(dev) == 0x1011)) {
107 sc->clockfreq = XLP_I2C_CLKFREQ;
108 sc->i2cfreq = XLP_I2C_FREQ;
110 device_set_desc(dev, "Netlogic XLP I2C Controller");
111 return (BUS_PROBE_DEFAULT);
116 static device_method_t iicoc_methods[] = {
117 /* device interface */
118 DEVMETHOD(device_probe, iicoc_probe),
119 DEVMETHOD(device_attach, iicoc_attach),
120 DEVMETHOD(device_detach, iicoc_detach),
122 /* iicbus interface */
123 DEVMETHOD(iicbus_callback, iicbus_null_callback),
124 DEVMETHOD(iicbus_repeated_start, iicoc_iicbus_repeated_start),
125 DEVMETHOD(iicbus_start, iicoc_iicbus_start),
126 DEVMETHOD(iicbus_stop, iicoc_iicbus_stop),
127 DEVMETHOD(iicbus_reset, iicoc_iicbus_reset),
128 DEVMETHOD(iicbus_write, iicoc_iicbus_write),
129 DEVMETHOD(iicbus_read, iicoc_iicbus_read),
130 DEVMETHOD(iicbus_transfer, iicbus_transfer_gen),
135 static driver_t iicoc_driver = {
138 sizeof(struct iicoc_softc),
141 DRIVER_MODULE(iicoc, pci, iicoc_driver, 0, 0);