xref: /freebsd/sys/dev/sdhci/sdhci_xenon_acpi.c (revision edf8578117e8844e02c0121147f45e4609b30680)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2021 Semihalf
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 ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26 
27 
28 #include <sys/cdefs.h>
29 #include <sys/param.h>
30 #include <sys/bus.h>
31 #include <sys/kernel.h>
32 #include <sys/module.h>
33 #include <sys/taskqueue.h>
34 
35 #include <dev/mmc/bridge.h>
36 #include <dev/mmc/mmcbrvar.h>
37 #include <dev/mmc/mmcreg.h>
38 
39 #include <dev/mmc/mmc_helpers.h>
40 
41 #include <contrib/dev/acpica/include/acpi.h>
42 #include <contrib/dev/acpica/include/accommon.h>
43 #include <dev/acpica/acpivar.h>
44 
45 #include <dev/extres/regulator/regulator.h>
46 
47 #include <dev/sdhci/sdhci.h>
48 #include <dev/sdhci/sdhci_xenon.h>
49 
50 #include "mmcbr_if.h"
51 #include "sdhci_if.h"
52 
53 #include "opt_mmccam.h"
54 #include "opt_soc.h"
55 
56 static char *sdhci_xenon_hids[] = {
57 	"MRVL0002",
58 	"MRVL0003",
59 	"MRVL0004",
60 	NULL
61 };
62 
63 static int
64 sdhci_xenon_acpi_probe(device_t dev)
65 {
66 	device_t bus;
67 	int err;
68 
69 	bus = device_get_parent(dev);
70 
71 	err = ACPI_ID_PROBE(bus, dev, sdhci_xenon_hids, NULL);
72 	if (err <= 0) {
73 		device_set_desc(dev, "Armada Xenon SDHCI controller");
74 		return (err);
75 	}
76 
77 	return (ENXIO);
78 }
79 
80 static int
81 sdhci_xenon_acpi_attach(device_t dev)
82 {
83 	struct sdhci_xenon_softc *sc;
84 	struct sdhci_slot *slot;
85 	struct mmc_helper mmc_helper;
86 
87 	sc = device_get_softc(dev);
88 	memset(&mmc_helper, 0, sizeof(mmc_helper));
89 
90 	slot = malloc(sizeof(*slot), M_DEVBUF, M_ZERO | M_WAITOK);
91 	if (!slot)
92 		return (ENOMEM);
93 
94 	/*
95 	 * Don't use regularators.
96 	 * In ACPI mode the firmware takes care of them for us
97 	 */
98 	sc->skip_regulators = true;
99 	sc->slot = slot;
100 
101 	if (mmc_parse(dev, &mmc_helper, &slot->host) != 0)
102 		return (ENXIO);
103 
104 	if (mmc_helper.props & MMC_PROP_NON_REMOVABLE) {
105 		slot->opt |= SDHCI_NON_REMOVABLE;
106 		if (bootverbose)
107 			device_printf(dev, "Non-removable media\n");
108 	}
109 
110 	sc->wp_inverted = mmc_helper.props & MMC_PROP_WP_INVERTED;
111 
112 	return (sdhci_xenon_attach(dev));
113 }
114 
115 static device_method_t sdhci_xenon_acpi_methods[] = {
116 	/* device_if */
117 	DEVMETHOD(device_probe,		sdhci_xenon_acpi_probe),
118 	DEVMETHOD(device_attach,	sdhci_xenon_acpi_attach),
119 	DEVMETHOD(device_detach,	sdhci_xenon_detach),
120 
121 	DEVMETHOD(sdhci_get_card_present,	sdhci_generic_get_card_present),
122 
123 	DEVMETHOD_END
124 };
125 
126 DEFINE_CLASS_1(sdhci_xenon, sdhci_xenon_acpi_driver, sdhci_xenon_acpi_methods,
127 	sizeof(struct sdhci_xenon_softc), sdhci_xenon_driver);
128 
129 DRIVER_MODULE(sdhci_xenon, acpi, sdhci_xenon_acpi_driver, NULL, NULL);
130 
131 #ifndef MMCCAM
132 MMC_DECLARE_BRIDGE(sdhci_xenon_acpi);
133 #endif
134