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/* $OpenBSD: hidwusb.c,v 1.2 2019/08/29 11:51:48 kettenis Exp $ */
/*
* Copyright (c) 2017, 2018 Mark Kettenis <kettenis@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/fdt.h>
#include <arm64/dev/simplebusvar.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_clock.h>
#include <dev/ofw/ofw_gpio.h>
#include <dev/ofw/fdt.h>
/*
* This driver is based on preliminary device tree bindings and will
* almost certainly need changes once the official bindings land in
* mainline Linux. Support for these preliminary bindings will be
* dropped as soon as official bindings are available.
*/
struct hidwusb_softc {
struct simplebus_softc sc_sbus;
};
int hidwusb_match(struct device *, void *, void *);
void hidwusb_attach(struct device *, struct device *, void *);
struct cfattach hidwusb_ca = {
sizeof(struct hidwusb_softc), hidwusb_match, hidwusb_attach
};
struct cfdriver hidwusb_cd = {
NULL, "hidwusb", DV_DULL
};
int
hidwusb_match(struct device *parent, void *match, void *aux)
{
struct fdt_attach_args *faa = aux;
return OF_is_compatible(faa->fa_node, "hisilicon,kirin970-dwc3");
}
void
hidwusb_attach(struct device *parent, struct device *self, void *aux)
{
struct hidwusb_softc *sc = (struct hidwusb_softc *)self;
struct fdt_attach_args *faa = aux;
uint32_t gpio[3];
int node;
/*
* The HiKey970 has a switch to select between the Type-C and
* a hub with Type-A connectors. Switch to the USB Type-C
* connector as we can't power up the hub yet.
*/
node = OF_finddevice("/soc/hikey_usbhub");
if (node) {
if (OF_getpropintarray(node, "typc_vbus_int_gpio,typec-gpios",
gpio, sizeof(gpio)) == sizeof(gpio)) {
gpio_controller_config_pin(gpio, GPIO_CONFIG_OUTPUT);
gpio_controller_set_pin(gpio, 1);
}
}
clock_enable_all(faa->fa_node);
reset_deassert_all(faa->fa_node);
simplebus_attach(parent, &sc->sc_sbus.sc_dev, faa);
}
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