1 /*-
2 *
3 * Copyright (c) 2020 Oskar Holmlund <oskar.holmlund@ohdata.se>
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 ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
19 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
21 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
22 * 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/param.h>
28 #include <sys/systm.h>
29 #include <sys/bus.h>
30 #include <sys/fbio.h>
31 #include <sys/kernel.h>
32 #include <sys/module.h>
33 #include <sys/rman.h>
34 #include <sys/resource.h>
35 #include <machine/bus.h>
36 #include <vm/vm.h>
37 #include <vm/vm_extern.h>
38 #include <vm/vm_kern.h>
39 #include <vm/pmap.h>
40
41 #include <dev/fdt/simplebus.h>
42
43 #include <dev/ofw/ofw_bus.h>
44 #include <dev/ofw/ofw_bus_subr.h>
45
46 #define TI_AM335X_USB_PHY 1
47 #define TI_AM335X_USB_PHY_END 0
48
49 static struct ofw_compat_data compat_data[] = {
50 { "ti,am335x-usb-phy", TI_AM335X_USB_PHY },
51 { NULL, TI_AM335X_USB_PHY_END }
52 };
53
54 struct ti_usb_phy_softc {
55 device_t dev;
56 };
57
58 static int ti_usb_phy_probe(device_t dev);
59 static int ti_usb_phy_attach(device_t dev);
60 static int ti_usb_phy_detach(device_t dev);
61
62 static int
ti_usb_phy_probe(device_t dev)63 ti_usb_phy_probe(device_t dev)
64 {
65 if (!ofw_bus_status_okay(dev))
66 return (ENXIO);
67
68 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
69 return (ENXIO);
70
71 device_set_desc(dev, "TI AM335x USB PHY");
72 if (!bootverbose)
73 device_quiet(dev);
74
75 return (BUS_PROBE_DEFAULT);
76 }
77
78 static int
ti_usb_phy_attach(device_t dev)79 ti_usb_phy_attach(device_t dev)
80 {
81 struct ti_usb_phy_softc *sc;
82
83 sc = device_get_softc(dev);
84 sc->dev = dev;
85
86 /* FIXME: Add dev/phy/ interface */
87
88 bus_attach_children(dev);
89 return (0);
90 }
91
92 static int
ti_usb_phy_detach(device_t dev)93 ti_usb_phy_detach(device_t dev)
94 {
95 return (EBUSY);
96 }
97
98 static device_method_t ti_usb_phy_methods[] = {
99 /* Device interface */
100 DEVMETHOD(device_probe, ti_usb_phy_probe),
101 DEVMETHOD(device_attach, ti_usb_phy_attach),
102 DEVMETHOD(device_detach, ti_usb_phy_detach),
103
104 DEVMETHOD_END
105 };
106
107 DEFINE_CLASS_1(ti_usb_phy, ti_usb_phy_driver, ti_usb_phy_methods,
108 sizeof(struct ti_usb_phy_softc), simplebus_driver);
109
110 EARLY_DRIVER_MODULE(ti_usb_phy, simplebus, ti_usb_phy_driver, 0, 0,
111 BUS_PASS_BUS + BUS_PASS_ORDER_FIRST);
112 MODULE_VERSION(ti_usb_phy, 1);
113 MODULE_DEPEND(ti_usb_phy, ti_sysc, 1, 1, 1);
114