diff options
Diffstat (limited to 'sys/dev/usb/controller/dwc3/aw_dwc3.c')
| -rw-r--r-- | sys/dev/usb/controller/dwc3/aw_dwc3.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/sys/dev/usb/controller/dwc3/aw_dwc3.c b/sys/dev/usb/controller/dwc3/aw_dwc3.c new file mode 100644 index 000000000000..be941ca2148f --- /dev/null +++ b/sys/dev/usb/controller/dwc3/aw_dwc3.c @@ -0,0 +1,142 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2019 Emmanuel Vadot <manu@FreeBSD.Org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Rockchip DWC3 glue + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/rman.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/gpio.h> +#include <machine/bus.h> + +#include <dev/fdt/simplebus.h> + +#include <dev/fdt/fdt_common.h> +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> +#include <dev/ofw/ofw_subr.h> + +#include <dev/clk/clk.h> +#include <dev/hwreset/hwreset.h> +#include <dev/phy/phy_usb.h> + +static struct ofw_compat_data compat_data[] = { + { "allwinner,sun50i-h6-dwc3", 1 }, + { NULL, 0 } +}; + +struct aw_dwc3_softc { + struct simplebus_softc sc; + device_t dev; + clk_t clk_bus; + hwreset_t rst_bus; +}; + +static int +aw_dwc3_probe(device_t dev) +{ + phandle_t node; + + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0) + return (ENXIO); + + /* Binding says that we need a child node for the actual dwc3 controller */ + node = ofw_bus_get_node(dev); + if (OF_child(node) <= 0) + return (ENXIO); + + device_set_desc(dev, "Allwinner H6 DWC3"); + return (BUS_PROBE_DEFAULT); +} + +static int +aw_dwc3_attach(device_t dev) +{ + struct aw_dwc3_softc *sc; + device_t cdev; + phandle_t node, child; + int err; + + sc = device_get_softc(dev); + sc->dev = dev; + node = ofw_bus_get_node(dev); + + /* Enable the clocks */ + if (clk_get_by_ofw_name(dev, 0, "bus", &sc->clk_bus) != 0) { + device_printf(dev, "Cannot get bus clock\n"); + return (ENXIO); + } + err = clk_enable(sc->clk_bus); + if (err != 0) { + device_printf(dev, "Could not enable clock %s\n", + clk_get_name(sc->clk_bus)); + return (ENXIO); + } + + /* Put module out of reset */ + if (hwreset_get_by_ofw_name(dev, node, "bus", &sc->rst_bus) == 0) { + if (hwreset_deassert(sc->rst_bus) != 0) { + device_printf(dev, "Cannot deassert reset\n"); + return (ENXIO); + } + } + + simplebus_init(dev, node); + if (simplebus_fill_ranges(node, &sc->sc) < 0) { + device_printf(dev, "could not get ranges\n"); + return (ENXIO); + } + + for (child = OF_child(node); child > 0; child = OF_peer(child)) { + cdev = simplebus_add_device(dev, child, 0, NULL, -1, NULL); + if (cdev != NULL) + device_probe_and_attach(cdev); + } + + bus_attach_children(dev); + return (0); +} + +static device_method_t aw_dwc3_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, aw_dwc3_probe), + DEVMETHOD(device_attach, aw_dwc3_attach), + + DEVMETHOD_END +}; + +DEFINE_CLASS_1(aw_dwc3, aw_dwc3_driver, aw_dwc3_methods, + sizeof(struct aw_dwc3_softc), simplebus_driver); +DRIVER_MODULE(aw_dwc3, simplebus, aw_dwc3_driver, 0, 0); |