2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2021 Adrian Chadd <adrian@FreeBSD.Org>
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
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/module.h>
42 #include <machine/bus.h>
44 #include <dev/fdt/simplebus.h>
46 #include <dev/fdt/fdt_common.h>
47 #include <dev/ofw/ofw_bus.h>
48 #include <dev/ofw/ofw_bus_subr.h>
49 #include <dev/ofw/ofw_subr.h>
51 #include <dev/extres/clk/clk.h>
52 #include <dev/extres/hwreset/hwreset.h>
53 #include <dev/extres/phy/phy_usb.h>
54 #include <dev/extres/syscon/syscon.h>
56 static struct ofw_compat_data compat_data[] = {
61 struct qcom_dwc3_softc {
62 struct simplebus_softc sc;
71 qcom_dwc3_probe(device_t dev)
75 if (!ofw_bus_status_okay(dev))
78 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
81 /* Binding says that we need a child node for the actual dwc3 controller */
82 node = ofw_bus_get_node(dev);
83 if (OF_child(node) <= 0)
86 device_set_desc(dev, "Qualcomm DWC3");
87 return (BUS_PROBE_DEFAULT);
91 qcom_dwc3_attach(device_t dev)
93 struct qcom_dwc3_softc *sc;
95 phandle_t node, child;
98 sc = device_get_softc(dev);
100 node = ofw_bus_get_node(dev);
101 sc->type = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
103 /* Mandatory clocks */
104 if (clk_get_by_ofw_name(dev, 0, "master", &sc->clk_master) != 0) {
105 device_printf(dev, "Cannot get master clock\n");
109 if (clk_get_by_ofw_name(dev, 0, "sleep", &sc->clk_sleep) != 0) {
110 device_printf(dev, "Cannot get sleep clock\n");
114 if (clk_get_by_ofw_name(dev, 0, "mock_utmi", &sc->clk_mock_utmi) != 0) {
115 device_printf(dev, "Cannot get mock_utmi clock\n");
120 * TODO: when we support optional reset blocks, take things
121 * out of reset (well, put them into reset, then take out of reset.)
125 * Now, iterate over the clocks and enable them.
127 err = clk_enable(sc->clk_master);
129 device_printf(dev, "Could not enable clock %s\n",
130 clk_get_name(sc->clk_master));
133 err = clk_enable(sc->clk_sleep);
135 device_printf(dev, "Could not enable clock %s\n",
136 clk_get_name(sc->clk_sleep));
139 err = clk_enable(sc->clk_mock_utmi);
141 device_printf(dev, "Could not enable clock %s\n",
142 clk_get_name(sc->clk_mock_utmi));
150 simplebus_init(dev, node);
151 if (simplebus_fill_ranges(node, &sc->sc) < 0) {
152 device_printf(dev, "could not get ranges\n");
156 for (child = OF_child(node); child > 0; child = OF_peer(child)) {
157 cdev = simplebus_add_device(dev, child, 0, NULL, -1, NULL);
159 device_probe_and_attach(cdev);
162 return (bus_generic_attach(dev));
165 static device_method_t qcom_dwc3_methods[] = {
166 /* Device interface */
167 DEVMETHOD(device_probe, qcom_dwc3_probe),
168 DEVMETHOD(device_attach, qcom_dwc3_attach),
169 /* XXX TODO suspend */
170 /* XXX TODO resume */
175 static devclass_t qcom_dwc3_devclass;
177 DEFINE_CLASS_1(qcom_dwc3, qcom_dwc3_driver, qcom_dwc3_methods,
178 sizeof(struct qcom_dwc3_softc), simplebus_driver);
179 DRIVER_MODULE(qcom_dwc3, simplebus, qcom_dwc3_driver, qcom_dwc3_devclass,