1 /*-
2 * Copyright (c) 2016 Oleksandr Tymoshenko <gonzo@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 #include "opt_acpi.h"
29
30 #include <sys/param.h>
31 #include <sys/bus.h>
32 #include <sys/kernel.h>
33 #include <sys/module.h>
34 #include <sys/proc.h>
35 #include <sys/rman.h>
36
37 #include <machine/bus.h>
38 #include <machine/resource.h>
39
40 #include <contrib/dev/acpica/include/acpi.h>
41 #include <contrib/dev/acpica/include/accommon.h>
42
43 #include <dev/acpica/acpivar.h>
44 #include <dev/iicbus/iiconf.h>
45
46 #include <dev/ichiic/ig4_reg.h>
47 #include <dev/ichiic/ig4_var.h>
48
49 static int ig4iic_acpi_probe(device_t dev);
50 static int ig4iic_acpi_attach(device_t dev);
51 static int ig4iic_acpi_detach(device_t dev);
52
53 static char *ig4iic_ids[] = {
54 "INT33C2",
55 "INT33C3",
56 "INT3432",
57 "INT3433",
58 "INT3446",
59 "80860F41",
60 "808622C1",
61 "AMDI0510",
62 "AMDI0010",
63 "AMD0010",
64 "APMC0D0F",
65 NULL
66 };
67
68 static int
ig4iic_acpi_probe(device_t dev)69 ig4iic_acpi_probe(device_t dev)
70 {
71 int rv;
72
73 if (acpi_disabled("ig4iic"))
74 return (ENXIO);
75 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ig4iic_ids, NULL);
76 if (rv > 0)
77 return (rv);
78
79 device_set_desc(dev, "Designware I2C Controller");
80 return (rv);
81 }
82
83 static int
ig4iic_acpi_attach(device_t dev)84 ig4iic_acpi_attach(device_t dev)
85 {
86 ig4iic_softc_t *sc;
87 int error;
88
89 sc = device_get_softc(dev);
90
91 sc->dev = dev;
92 /* All the HIDs matched are Atom SOCs. */
93 sc->version = IG4_ATOM;
94 sc->regs_rid = 0;
95 sc->regs_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
96 &sc->regs_rid, RF_ACTIVE);
97 if (sc->regs_res == NULL) {
98 device_printf(dev, "unable to map registers\n");
99 ig4iic_acpi_detach(dev);
100 return (ENXIO);
101 }
102 sc->intr_rid = 0;
103 sc->intr_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
104 &sc->intr_rid, RF_SHAREABLE | RF_ACTIVE);
105 if (sc->intr_res == NULL) {
106 device_printf(dev, "unable to map interrupt\n");
107 ig4iic_acpi_detach(dev);
108 return (ENXIO);
109 }
110 sc->platform_attached = true;
111
112 error = ig4iic_attach(sc);
113 if (error)
114 ig4iic_acpi_detach(dev);
115
116 return (error);
117 }
118
119 static int
ig4iic_acpi_detach(device_t dev)120 ig4iic_acpi_detach(device_t dev)
121 {
122 ig4iic_softc_t *sc = device_get_softc(dev);
123 int error;
124
125 if (sc->platform_attached) {
126 error = ig4iic_detach(sc);
127 if (error)
128 return (error);
129 sc->platform_attached = false;
130 }
131
132 if (sc->intr_res) {
133 bus_release_resource(dev, SYS_RES_IRQ,
134 sc->intr_rid, sc->intr_res);
135 sc->intr_res = NULL;
136 }
137 if (sc->regs_res) {
138 bus_release_resource(dev, SYS_RES_MEMORY,
139 sc->regs_rid, sc->regs_res);
140 sc->regs_res = NULL;
141 }
142
143 return (0);
144 }
145
146 static int
ig4iic_acpi_suspend(device_t dev)147 ig4iic_acpi_suspend(device_t dev)
148 {
149 ig4iic_softc_t *sc = device_get_softc(dev);
150
151 return (ig4iic_suspend(sc));
152 }
153
154 static int
ig4iic_acpi_resume(device_t dev)155 ig4iic_acpi_resume(device_t dev)
156 {
157 ig4iic_softc_t *sc = device_get_softc(dev);
158
159 return (ig4iic_resume(sc));
160 }
161
162 static device_method_t ig4iic_acpi_methods[] = {
163 /* Device interface */
164 DEVMETHOD(device_probe, ig4iic_acpi_probe),
165 DEVMETHOD(device_attach, ig4iic_acpi_attach),
166 DEVMETHOD(device_detach, ig4iic_acpi_detach),
167 DEVMETHOD(device_suspend, ig4iic_acpi_suspend),
168 DEVMETHOD(device_resume, ig4iic_acpi_resume),
169
170 /* Bus interface */
171 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
172 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
173 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
174 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
175 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
176 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
177 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
178
179 /* iicbus interface */
180 DEVMETHOD(iicbus_transfer, ig4iic_transfer),
181 DEVMETHOD(iicbus_reset, ig4iic_reset),
182 DEVMETHOD(iicbus_callback, ig4iic_callback),
183
184 DEVMETHOD_END
185 };
186
187 static driver_t ig4iic_acpi_driver = {
188 "ig4iic",
189 ig4iic_acpi_methods,
190 sizeof(struct ig4iic_softc),
191 };
192
193 DRIVER_MODULE_ORDERED(ig4iic, acpi, ig4iic_acpi_driver, 0, 0, SI_ORDER_ANY);
194 MODULE_DEPEND(ig4iic, acpi, 1, 1, 1);
195 ACPI_PNP_INFO(ig4iic_ids);
196