bcm283x_dwc_fdt.c revision 322724 
1/*
2 * Copyright 2015 Andrew Turner.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
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
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
22 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: stable/10/sys/arm/broadcom/bcm2835/bcm283x_dwc_fdt.c 322724 2017-08-20 16:52:27Z marius $");
30
31#include <sys/param.h>
32#include <sys/kernel.h>
33#include <sys/bus.h>
34#include <sys/callout.h>
35#include <sys/condvar.h>
36#include <sys/module.h>
37
38#include <dev/ofw/ofw_bus_subr.h>
39
40#include <dev/usb/usb.h>
41#include <dev/usb/usbdi.h>
42
43#include <dev/usb/usb_busdma.h>
44#include <dev/usb/usb_process.h>
45
46#include <dev/usb/usb_controller.h>
47#include <dev/usb/usb_bus.h>
48
49#include <dev/usb/controller/dwc_otg.h>
50#include <dev/usb/controller/dwc_otg_fdt.h>
51
52#include <arm/broadcom/bcm2835/bcm2835_mbox_prop.h>
53
54static struct ofw_compat_data compat_data[] = {
55	{"broadcom,bcm2835-usb",	1},
56	{"brcm,bcm2708-usb",		1},
57	{NULL,				0}
58};
59
60static device_probe_t bcm283x_dwc_otg_probe;
61static device_attach_t bcm283x_dwc_otg_attach;
62
63static int
64bcm283x_dwc_otg_probe(device_t dev)
65{
66
67	if (!ofw_bus_status_okay(dev))
68		return (ENXIO);
69
70	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
71		return (ENXIO);
72
73	device_set_desc(dev, "DWC OTG 2.0 integrated USB controller (bcm283x)");
74
75	return (BUS_PROBE_VENDOR);
76}
77
78static int
79bcm283x_dwc_otg_attach(device_t dev)
80{
81	int err;
82
83	err = bcm2835_mbox_set_power_state(BCM2835_MBOX_POWER_ID_USB_HCD, TRUE);
84	if (err)
85		device_printf(dev, "failed to set power state, err=%d\n", err);
86
87	return (dwc_otg_attach(dev));
88}
89
90static device_method_t bcm283x_dwc_otg_methods[] = {
91	/* bus interface */
92	DEVMETHOD(device_probe, bcm283x_dwc_otg_probe),
93	DEVMETHOD(device_attach, bcm283x_dwc_otg_attach),
94
95	DEVMETHOD_END
96};
97
98static devclass_t bcm283x_dwc_otg_devclass;
99
100DEFINE_CLASS_1(bcm283x_dwcotg, bcm283x_dwc_otg_driver, bcm283x_dwc_otg_methods,
101    sizeof(struct dwc_otg_fdt_softc), dwc_otg_driver);
102DRIVER_MODULE(bcm283x_dwcotg, simplebus, bcm283x_dwc_otg_driver,
103    bcm283x_dwc_otg_devclass, 0, 0);
104MODULE_DEPEND(bcm283x_dwcotg, usb, 1, 1, 1);
105