1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2021 Val Packett <val@packett.cool>
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
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 <dev/intel/spi.h>
38
39 #include "spibus_if.h"
40
41 static const struct intelspi_acpi_device {
42 const char *hid;
43 enum intelspi_vers vers;
44 const char *desc;
45 } intelspi_acpi_devices[] = {
46 { "80860F0E", SPI_BAYTRAIL, "Intel Bay Trail SPI Controller" },
47 { "8086228E", SPI_BRASWELL, "Intel Braswell SPI Controller" },
48 };
49
50 static char *intelspi_ids[] = { "80860F0E", "8086228E", NULL };
51
52 static int
intelspi_acpi_probe(device_t dev)53 intelspi_acpi_probe(device_t dev)
54 {
55 struct intelspi_softc *sc = device_get_softc(dev);
56 char *hid;
57 int i;
58
59 if (acpi_disabled("spi"))
60 return (ENXIO);
61
62 if (ACPI_ID_PROBE(device_get_parent(dev), dev, intelspi_ids, &hid) > 0)
63 return (ENXIO);
64
65 for (i = 0; i < nitems(intelspi_acpi_devices); i++) {
66 if (strcmp(intelspi_acpi_devices[i].hid, hid) == 0) {
67 sc->sc_vers = intelspi_acpi_devices[i].vers;
68 sc->sc_handle = acpi_get_handle(dev);
69 device_set_desc(dev, intelspi_acpi_devices[i].desc);
70 return (BUS_PROBE_DEFAULT);
71 }
72 }
73
74 return (ENXIO);
75 }
76
77 static int
intelspi_acpi_attach(device_t dev)78 intelspi_acpi_attach(device_t dev)
79 {
80 struct intelspi_softc *sc = device_get_softc(dev);
81
82 sc->sc_mem_rid = 0;
83 sc->sc_irq_rid = 0;
84
85 return (intelspi_attach(dev));
86 }
87
88 static device_method_t intelspi_acpi_methods[] = {
89 /* Device interface */
90 DEVMETHOD(device_probe, intelspi_acpi_probe),
91 DEVMETHOD(device_attach, intelspi_acpi_attach),
92 DEVMETHOD(device_detach, intelspi_detach),
93 DEVMETHOD(device_suspend, intelspi_suspend),
94 DEVMETHOD(device_resume, intelspi_resume),
95
96 /* Bus interface */
97 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
98 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
99 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
100 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
101 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
102 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
103 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
104
105 /* SPI interface */
106 DEVMETHOD(spibus_transfer, intelspi_transfer),
107
108 DEVMETHOD_END
109 };
110
111 static driver_t intelspi_acpi_driver = {
112 "spi",
113 intelspi_acpi_methods,
114 sizeof(struct intelspi_softc),
115 };
116
117 DRIVER_MODULE(intelspi, acpi, intelspi_acpi_driver, 0, 0);
118 MODULE_DEPEND(intelspi, acpi, 1, 1, 1);
119 MODULE_DEPEND(intelspi, spibus, 1, 1, 1);
120 ACPI_PNP_INFO(intelspi_ids);
121