2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 Hans Petter Selasky.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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 PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/systm.h>
34 #include <sys/condvar.h>
35 #include <sys/kernel.h>
37 #include <sys/malloc.h>
38 #include <sys/module.h>
39 #include <sys/mutex.h>
42 #include <dev/ofw/openfirm.h>
43 #include <dev/ofw/ofw_bus.h>
44 #include <dev/ofw/ofw_bus_subr.h>
46 #include <dev/usb/usb.h>
47 #include <dev/usb/usbdi.h>
49 #include <dev/usb/usb_core.h>
50 #include <dev/usb/usb_busdma.h>
51 #include <dev/usb/usb_process.h>
52 #include <dev/usb/usb_util.h>
54 #include <dev/usb/usb_controller.h>
55 #include <dev/usb/usb_bus.h>
57 #include <dev/usb/controller/dwc_otg.h>
58 #include <dev/usb/controller/dwc_otg_fdt.h>
60 static device_probe_t dwc_otg_probe;
62 static struct ofw_compat_data compat_data[] = {
63 { "synopsys,designware-hs-otg2", 1 },
69 dwc_otg_probe(device_t dev)
72 if (!ofw_bus_status_okay(dev))
75 if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
78 device_set_desc(dev, "DWC OTG 2.0 integrated USB controller");
80 return (BUS_PROBE_DEFAULT);
84 dwc_otg_irq_index(device_t dev, int *rid)
89 node = ofw_bus_get_node(dev);
90 rv = ofw_bus_find_string_index(node, "interrupt-names", "usb", &idx);
98 dwc_otg_attach(device_t dev)
100 struct dwc_otg_fdt_softc *sc = device_get_softc(dev);
105 sc->sc_otg.sc_bus.parent = dev;
107 /* get USB mode, if any */
108 if (OF_getprop(ofw_bus_get_node(dev), "dr_mode",
109 &usb_mode, sizeof(usb_mode)) > 0) {
111 /* ensure proper zero termination */
112 usb_mode[sizeof(usb_mode) - 1] = 0;
114 if (strcasecmp(usb_mode, "host") == 0)
115 sc->sc_otg.sc_mode = DWC_MODE_HOST;
116 else if (strcasecmp(usb_mode, "peripheral") == 0)
117 sc->sc_otg.sc_mode = DWC_MODE_DEVICE;
118 else if (strcasecmp(usb_mode, "otg") != 0) {
119 device_printf(dev, "Invalid FDT dr_mode: %s\n",
125 sc->sc_otg.sc_io_res =
126 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
128 if (!(sc->sc_otg.sc_io_res))
132 * brcm,bcm2708-usb FDT provides two interrupts, we need only the USB
133 * interrupt (VC_USB). The latest FDT for it provides an
134 * interrupt-names property and swapped them around, while older ones
135 * did not have interrupt-names and put the usb interrupt in the second
136 * position. We'll attempt to use interrupt-names first with a fallback
137 * to the old method of assuming the index based on the compatible
140 if (dwc_otg_irq_index(dev, &rid) != 0)
141 rid = ofw_bus_is_compatible(dev, "brcm,bcm2708-usb") ? 1 : 0;
142 sc->sc_otg.sc_irq_res =
143 bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
144 if (sc->sc_otg.sc_irq_res == NULL)
147 sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1);
148 if (sc->sc_otg.sc_bus.bdev == NULL)
151 err = dwc_otg_init(&sc->sc_otg);
153 err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev);
166 dwc_otg_detach(device_t dev)
168 struct dwc_otg_fdt_softc *sc = device_get_softc(dev);
170 /* during module unload there are lots of children leftover */
171 device_delete_children(dev);
173 if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) {
175 * only call dwc_otg_uninit() after dwc_otg_init()
177 dwc_otg_uninit(&sc->sc_otg);
179 bus_teardown_intr(dev, sc->sc_otg.sc_irq_res,
180 sc->sc_otg.sc_intr_hdl);
181 sc->sc_otg.sc_intr_hdl = NULL;
183 /* free IRQ channel, if any */
184 if (sc->sc_otg.sc_irq_res) {
185 bus_release_resource(dev, SYS_RES_IRQ, 0,
186 sc->sc_otg.sc_irq_res);
187 sc->sc_otg.sc_irq_res = NULL;
189 /* free memory resource, if any */
190 if (sc->sc_otg.sc_io_res) {
191 bus_release_resource(dev, SYS_RES_MEMORY, 0,
192 sc->sc_otg.sc_io_res);
193 sc->sc_otg.sc_io_res = NULL;
195 usb_bus_mem_free_all(&sc->sc_otg.sc_bus, NULL);
200 static device_method_t dwc_otg_methods[] = {
201 /* Device interface */
202 DEVMETHOD(device_probe, dwc_otg_probe),
203 DEVMETHOD(device_attach, dwc_otg_attach),
204 DEVMETHOD(device_detach, dwc_otg_detach),
205 DEVMETHOD(device_suspend, bus_generic_suspend),
206 DEVMETHOD(device_resume, bus_generic_resume),
207 DEVMETHOD(device_shutdown, bus_generic_shutdown),
212 driver_t dwc_otg_driver = {
214 .methods = dwc_otg_methods,
215 .size = sizeof(struct dwc_otg_fdt_softc),
218 static devclass_t dwc_otg_devclass;
220 DRIVER_MODULE(dwcotg, simplebus, dwc_otg_driver, dwc_otg_devclass, 0, 0);
221 MODULE_DEPEND(dwcotg, usb, 1, 1, 1);