1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2020 Andrew Turner 5 * 6 * This work was supported by Innovate UK project 105694, "Digital Security 7 * by Design (DSbD) Technology Platform Prototype". 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/bus.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #include <sys/lock.h> 37 #include <sys/mutex.h> 38 39 #include <dev/ofw/openfirm.h> 40 #include <dev/ofw/ofw_bus.h> 41 #include <dev/ofw/ofw_bus_subr.h> 42 43 #include <dev/gpio/gpiobusvar.h> 44 45 #include "pl061.h" 46 47 static int 48 pl061_fdt_probe(device_t dev) 49 { 50 if (!ofw_bus_status_okay(dev)) 51 return (ENXIO); 52 53 if (!ofw_bus_is_compatible(dev, "arm,pl061")) 54 return (ENXIO); 55 56 device_set_desc(dev, "Arm PL061 GPIO Controller"); 57 58 return (BUS_PROBE_DEFAULT); 59 } 60 61 static int 62 pl061_fdt_attach(device_t dev) 63 { 64 int error; 65 66 error = pl061_attach(dev); 67 if (error != 0) 68 return (error); 69 70 if (!intr_pic_register(dev, OF_xref_from_node(ofw_bus_get_node(dev)))) { 71 device_printf(dev, "couldn't register PIC\n"); 72 pl061_detach(dev); 73 error = ENXIO; 74 } 75 76 return (error); 77 } 78 79 static device_method_t pl061_fdt_methods[] = { 80 /* Device interface */ 81 DEVMETHOD(device_probe, pl061_fdt_probe), 82 DEVMETHOD(device_attach, pl061_fdt_attach), 83 84 DEVMETHOD_END 85 }; 86 87 DEFINE_CLASS_1(gpio, pl061_fdt_driver, pl061_fdt_methods, 88 sizeof(struct pl061_softc), pl061_driver); 89 90 EARLY_DRIVER_MODULE(pl061, ofwbus, pl061_fdt_driver, NULL, NULL, 91 BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LATE); 92 MODULE_DEPEND(pl061, gpiobus, 1, 1, 1); 93