87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/* $OpenBSD: hidwusb.c,v 1.4 2023/09/22 01:10:44 jsg Exp $ */
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/*
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* Copyright (c) 2017, 2018 Mark Kettenis <kettenis@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <machine/fdt.h>
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#include <machine/simplebusvar.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_clock.h>
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#include <dev/ofw/ofw_gpio.h>
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#include <dev/ofw/fdt.h>
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/*
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* This driver is based on preliminary device tree bindings and will
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* almost certainly need changes once the official bindings land in
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* mainline Linux. Support for these preliminary bindings will be
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* dropped as soon as official bindings are available.
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*/
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struct hidwusb_softc {
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struct simplebus_softc sc_sbus;
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};
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int hidwusb_match(struct device *, void *, void *);
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void hidwusb_attach(struct device *, struct device *, void *);
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const struct cfattach hidwusb_ca = {
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sizeof(struct hidwusb_softc), hidwusb_match, hidwusb_attach
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};
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struct cfdriver hidwusb_cd = {
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NULL, "hidwusb", DV_DULL
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};
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int
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hidwusb_match(struct device *parent, void *match, void *aux)
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{
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struct fdt_attach_args *faa = aux;
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return OF_is_compatible(faa->fa_node, "hisilicon,kirin970-dwc3");
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}
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void
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hidwusb_attach(struct device *parent, struct device *self, void *aux)
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{
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struct hidwusb_softc *sc = (struct hidwusb_softc *)self;
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struct fdt_attach_args *faa = aux;
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uint32_t gpio[3];
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int node;
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/*
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* The HiKey970 has a switch to select between the Type-C and
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* a hub with Type-A connectors. Switch to the USB Type-C
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* connector as we can't power up the hub yet.
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*/
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node = OF_finddevice("/soc/hikey_usbhub");
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if (node) {
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if (OF_getpropintarray(node, "typc_vbus_int_gpio,typec-gpios",
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gpio, sizeof(gpio)) == sizeof(gpio)) {
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gpio_controller_config_pin(gpio, GPIO_CONFIG_OUTPUT);
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gpio_controller_set_pin(gpio, 1);
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}
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}
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clock_enable_all(faa->fa_node);
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reset_deassert_all(faa->fa_node);
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simplebus_attach(parent, &sc->sc_sbus.sc_dev, faa);
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}
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