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 * $FreeBSD$
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD$");
31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/bus.h>
35#include <sys/fbio.h>
36#include <sys/kernel.h>
37#include <sys/module.h>
38#include <sys/rman.h>
39#include <sys/resource.h>
40#include <machine/bus.h>
41#include <vm/vm.h>
42#include <vm/vm_extern.h>
43#include <vm/vm_kern.h>
44#include <vm/pmap.h>
45
46#include <dev/fdt/simplebus.h>
47
48#include <dev/ofw/ofw_bus.h>
49#include <dev/ofw/ofw_bus_subr.h>
50
51#define TI_AM335X_USB_PHY		1
52#define TI_AM335X_USB_PHY_END		0
53
54static struct ofw_compat_data compat_data[] = {
55	{ "ti,am335x-usb-phy",	TI_AM335X_USB_PHY },
56	{ NULL,			TI_AM335X_USB_PHY_END }
57};
58
59struct ti_usb_phy_softc {
60	device_t		dev;
61};
62
63static int ti_usb_phy_probe(device_t dev);
64static int ti_usb_phy_attach(device_t dev);
65static int ti_usb_phy_detach(device_t dev);
66
67static int
68ti_usb_phy_probe(device_t dev)
69{
70	if (!ofw_bus_status_okay(dev))
71		return (ENXIO);
72
73	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
74		return (ENXIO);
75
76	device_set_desc(dev, "TI AM335x USB PHY");
77	if (!bootverbose)
78		device_quiet(dev);
79
80	return (BUS_PROBE_DEFAULT);
81}
82
83static int
84ti_usb_phy_attach(device_t dev)
85{
86	struct ti_usb_phy_softc *sc;
87	phandle_t node;
88
89	sc = device_get_softc(dev);
90	sc->dev = dev;
91	node = ofw_bus_get_node(dev);
92
93	/* FIXME: Add dev/extres/phy/ interface */
94
95	return (bus_generic_attach(dev));
96}
97
98static int
99ti_usb_phy_detach(device_t dev)
100{
101	return (EBUSY);
102}
103
104static device_method_t ti_usb_phy_methods[] = {
105	/* Device interface */
106	DEVMETHOD(device_probe,		ti_usb_phy_probe),
107	DEVMETHOD(device_attach,	ti_usb_phy_attach),
108	DEVMETHOD(device_detach,	ti_usb_phy_detach),
109
110	DEVMETHOD_END
111};
112
113DEFINE_CLASS_1(ti_usb_phy, ti_usb_phy_driver, ti_usb_phy_methods,
114    sizeof(struct ti_usb_phy_softc), simplebus_driver);
115
116static devclass_t ti_usb_phy_devclass;
117
118EARLY_DRIVER_MODULE(ti_usb_phy, simplebus, ti_usb_phy_driver,
119    ti_usb_phy_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_FIRST);
120MODULE_VERSION(ti_usb_phy, 1);
121MODULE_DEPEND(ti_usb_phy, ti_sysc, 1, 1, 1);
122