1 /* $OpenBSD: hidwusb.c,v 1.2 2019/08/29 11:51:48 kettenis 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 25 #include <arm64/dev/simplebusvar.h> 26 27 #include <dev/ofw/openfirm.h> 28 #include <dev/ofw/ofw_clock.h> 29 #include <dev/ofw/ofw_gpio.h> 30 #include <dev/ofw/fdt.h> 31 32 /* 33 * This driver is based on preliminary device tree bindings and will 34 * almost certainly need changes once the official bindings land in 35 * mainline Linux. Support for these preliminary bindings will be 36 * dropped as soon as official bindings are available. 37 */ 38 39 struct hidwusb_softc { 40 struct simplebus_softc sc_sbus; 41 }; 42 43 int hidwusb_match(struct device *, void *, void *); 44 void hidwusb_attach(struct device *, struct device *, void *); 45 46 struct cfattach hidwusb_ca = { 47 sizeof(struct hidwusb_softc), hidwusb_match, hidwusb_attach 48 }; 49 50 struct cfdriver hidwusb_cd = { 51 NULL, "hidwusb", DV_DULL 52 }; 53 54 int 55 hidwusb_match(struct device *parent, void *match, void *aux) 56 { 57 struct fdt_attach_args *faa = aux; 58 59 return OF_is_compatible(faa->fa_node, "hisilicon,kirin970-dwc3"); 60 } 61 62 void 63 hidwusb_attach(struct device *parent, struct device *self, void *aux) 64 { 65 struct hidwusb_softc *sc = (struct hidwusb_softc *)self; 66 struct fdt_attach_args *faa = aux; 67 uint32_t gpio[3]; 68 int node; 69 70 /* 71 * The HiKey970 has a switch to select between the Type-C and 72 * a hub with Type-A connectors. Switch to the USB Type-C 73 * connector as we can't power up the hub yet. 74 */ 75 node = OF_finddevice("/soc/hikey_usbhub"); 76 if (node) { 77 if (OF_getpropintarray(node, "typc_vbus_int_gpio,typec-gpios", 78 gpio, sizeof(gpio)) == sizeof(gpio)) { 79 gpio_controller_config_pin(gpio, GPIO_CONFIG_OUTPUT); 80 gpio_controller_set_pin(gpio, 1); 81 } 82 } 83 84 clock_enable_all(faa->fa_node); 85 reset_deassert_all(faa->fa_node); 86 87 simplebus_attach(parent, &sc->sc_sbus.sc_dev, faa); 88 } 89