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 #include <sys/param.h>
28 #include <sys/bus.h>
29 #include <sys/kernel.h>
30 #include <sys/types.h>
31 #include <sys/taskqueue.h>
32 #include <sys/module.h>
33
34 #include <machine/bus.h>
35
36 #include <dev/ofw/ofw_bus.h>
37 #include <dev/ofw/ofw_bus_subr.h>
38
39 #include <dev/mmc/bridge.h>
40 #include <dev/mmc/mmcbrvar.h>
41 #include <dev/mmc/mmcreg.h>
42
43 #include <dev/fdt/fdt_common.h>
44 #include <dev/mmc/mmc_fdt_helpers.h>
45
46 #include <dev/sdhci/sdhci.h>
47 #include <dev/sdhci/sdhci_fdt_gpio.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 struct ofw_compat_data compat_data[] = {
57 { "marvell,armada-3700-sdhci", 1 },
58 #ifdef SOC_MARVELL_8K
59 { "marvell,armada-cp110-sdhci", 1 },
60 { "marvell,armada-ap806-sdhci", 1 },
61 { "marvell,armada-ap807-sdhci", 1 },
62 #endif
63 { NULL, 0 }
64 };
65
66 static bool
sdhci_xenon_fdt_get_card_present(device_t dev,struct sdhci_slot * slot)67 sdhci_xenon_fdt_get_card_present(device_t dev, struct sdhci_slot *slot)
68 {
69 struct sdhci_xenon_softc *sc;
70
71 sc = device_get_softc(dev);
72
73 return (sdhci_fdt_gpio_get_present(sc->gpio));
74 }
75
76 static int
sdhci_xenon_fdt_probe(device_t dev)77 sdhci_xenon_fdt_probe(device_t dev)
78 {
79 if (!ofw_bus_status_okay(dev))
80 return (ENXIO);
81
82 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
83 return (ENXIO);
84
85 device_set_desc(dev, "Armada Xenon SDHCI controller");
86
87 return (BUS_PROBE_SPECIFIC);
88 }
89
90 static void
sdhci_xenon_fdt_parse(device_t dev,struct sdhci_slot * slot)91 sdhci_xenon_fdt_parse(device_t dev, struct sdhci_slot *slot)
92 {
93 struct sdhci_xenon_softc *sc;
94 struct mmc_helper mmc_helper;
95
96 sc = device_get_softc(dev);
97 memset(&mmc_helper, 0, sizeof(mmc_helper));
98
99 /* MMC helper for parsing FDT */
100 mmc_fdt_parse(dev, 0, &mmc_helper, &slot->host);
101
102 sc->skip_regulators = false;
103 sc->vmmc_supply = mmc_helper.vmmc_supply;
104 sc->vqmmc_supply = mmc_helper.vqmmc_supply;
105 sc->wp_inverted = mmc_helper.props & MMC_PROP_WP_INVERTED;
106
107 /* Check if the device is flagged as non-removable. */
108 if (mmc_helper.props & MMC_PROP_NON_REMOVABLE) {
109 slot->opt |= SDHCI_NON_REMOVABLE;
110 if (bootverbose)
111 device_printf(dev, "Non-removable media\n");
112 }
113 }
114
115 static int
sdhci_xenon_fdt_attach(device_t dev)116 sdhci_xenon_fdt_attach(device_t dev)
117 {
118 struct sdhci_xenon_softc *sc;
119 struct sdhci_slot *slot;
120
121 sc = device_get_softc(dev);
122 slot = malloc(sizeof(*slot), M_DEVBUF, M_ZERO | M_WAITOK);
123
124 sdhci_xenon_fdt_parse(dev, slot);
125
126 /*
127 * Set up any gpio pin handling described in the FDT data. This cannot
128 * fail; see comments in sdhci_fdt_gpio.h for details.
129 */
130 sc->gpio = sdhci_fdt_gpio_setup(dev, slot);
131 sc->slot = slot;
132
133 return (sdhci_xenon_attach(dev));
134 }
135
136 static int
sdhci_xenon_fdt_detach(device_t dev)137 sdhci_xenon_fdt_detach(device_t dev)
138 {
139 struct sdhci_xenon_softc *sc;
140
141 sc = device_get_softc(dev);
142 if (sc->gpio != NULL)
143 sdhci_fdt_gpio_teardown(sc->gpio);
144
145 return (sdhci_xenon_detach(dev));
146 }
147
148 static device_method_t sdhci_xenon_fdt_methods[] = {
149 /* device_if */
150 DEVMETHOD(device_probe, sdhci_xenon_fdt_probe),
151 DEVMETHOD(device_attach, sdhci_xenon_fdt_attach),
152 DEVMETHOD(device_detach, sdhci_xenon_fdt_detach),
153
154 DEVMETHOD(sdhci_get_card_present, sdhci_xenon_fdt_get_card_present),
155
156 DEVMETHOD_END
157 };
158
159 DEFINE_CLASS_1(sdhci_xenon, sdhci_xenon_fdt_driver, sdhci_xenon_fdt_methods,
160 sizeof(struct sdhci_xenon_softc), sdhci_xenon_driver);
161
162 DRIVER_MODULE(sdhci_xenon, simplebus, sdhci_xenon_fdt_driver, NULL, NULL);
163
164 #ifndef MMCCAM
165 MMC_DECLARE_BRIDGE(sdhci_xenon_fdt);
166 #endif
167