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 38 struct hidwusb_softc { 39 struct simplebus_softc sc_sbus; 40 }; 41 42 int hidwusb_match(struct device *, void *, void *); 43 void hidwusb_attach(struct device *, struct device *, void *); 44 45 const struct cfattach hidwusb_ca = { 46 sizeof(struct hidwusb_softc), hidwusb_match, hidwusb_attach 47 }; 48 49 struct cfdriver hidwusb_cd = { 50 NULL, "hidwusb", DV_DULL 51 }; 52 53 int 54 hidwusb_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 61 void 62 hidwusb_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