1/* $OpenBSD: hidwusb.c,v 1.4 2023/09/22 01:10:44 jsg Exp $ */ 2/* 3 * Copyright (c) 2017, 2018 Mark Kettenis <kettenis@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18#include <sys/param.h> 19#include <sys/systm.h> 20#include <sys/device.h> 21 22#include <machine/bus.h> 23#include <machine/fdt.h> 24#include <machine/simplebusvar.h> 25 26#include <dev/ofw/openfirm.h> 27#include <dev/ofw/ofw_clock.h> 28#include <dev/ofw/ofw_gpio.h> 29#include <dev/ofw/fdt.h> 30 31/* 32 * This driver is based on preliminary device tree bindings and will 33 * almost certainly need changes once the official bindings land in 34 * mainline Linux. Support for these preliminary bindings will be 35 * dropped as soon as official bindings are available. 36 */ 37 38struct hidwusb_softc { 39 struct simplebus_softc sc_sbus; 40}; 41 42int hidwusb_match(struct device *, void *, void *); 43void hidwusb_attach(struct device *, struct device *, void *); 44 45const struct cfattach hidwusb_ca = { 46 sizeof(struct hidwusb_softc), hidwusb_match, hidwusb_attach 47}; 48 49struct cfdriver hidwusb_cd = { 50 NULL, "hidwusb", DV_DULL 51}; 52 53int 54hidwusb_match(struct device *parent, void *match, void *aux) 55{ 56 struct fdt_attach_args *faa = aux; 57 58 return OF_is_compatible(faa->fa_node, "hisilicon,kirin970-dwc3"); 59} 60 61void 62hidwusb_attach(struct device *parent, struct device *self, void *aux) 63{ 64 struct hidwusb_softc *sc = (struct hidwusb_softc *)self; 65 struct fdt_attach_args *faa = aux; 66 uint32_t gpio[3]; 67 int node; 68 69 /* 70 * The HiKey970 has a switch to select between the Type-C and 71 * a hub with Type-A connectors. Switch to the USB Type-C 72 * connector as we can't power up the hub yet. 73 */ 74 node = OF_finddevice("/soc/hikey_usbhub"); 75 if (node) { 76 if (OF_getpropintarray(node, "typc_vbus_int_gpio,typec-gpios", 77 gpio, sizeof(gpio)) == sizeof(gpio)) { 78 gpio_controller_config_pin(gpio, GPIO_CONFIG_OUTPUT); 79 gpio_controller_set_pin(gpio, 1); 80 } 81 } 82 83 clock_enable_all(faa->fa_node); 84 reset_deassert_all(faa->fa_node); 85 86 simplebus_attach(parent, &sc->sc_sbus.sc_dev, faa); 87} 88