1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2020 Amazon.com, Inc. or its affiliates. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "opt_acpi.h" 30 31 #include <sys/cdefs.h> 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/bus.h> 35 #include <sys/kernel.h> 36 #include <sys/module.h> 37 #include <sys/lock.h> 38 #include <sys/mutex.h> 39 40 #include <machine/intr.h> 41 42 #include <contrib/dev/acpica/include/acpi.h> 43 #include <contrib/dev/acpica/include/accommon.h> 44 45 #include <dev/acpica/acpivar.h> 46 #include <dev/gpio/gpiobusvar.h> 47 48 #include "pl061.h" 49 50 static char *gpio_ids[] = { "ARMH0061", NULL }; 51 52 static int 53 pl061_acpi_probe(device_t dev) 54 { 55 int rv; 56 57 if (acpi_disabled("gpio")) 58 return (ENXIO); 59 60 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, gpio_ids, NULL); 61 62 if (rv <= 0) 63 device_set_desc(dev, "Arm PL061 GPIO Controller"); 64 65 return (rv); 66 } 67 68 static int 69 pl061_acpi_attach(device_t dev) 70 { 71 int error; 72 73 error = pl061_attach(dev); 74 if (error != 0) 75 return (error); 76 77 if (!intr_pic_register(dev, ACPI_GPIO_XREF)) { 78 device_printf(dev, "couldn't register PIC\n"); 79 pl061_detach(dev); 80 error = ENXIO; 81 } 82 83 return (error); 84 } 85 86 static device_method_t pl061_acpi_methods[] = { 87 /* Device interface */ 88 DEVMETHOD(device_probe, pl061_acpi_probe), 89 DEVMETHOD(device_attach, pl061_acpi_attach), 90 91 DEVMETHOD_END 92 }; 93 94 DEFINE_CLASS_1(gpio, pl061_acpi_driver, pl061_acpi_methods, 95 sizeof(struct pl061_softc), pl061_driver); 96 97 EARLY_DRIVER_MODULE(pl061, acpi, pl061_acpi_driver, NULL, NULL, 98 BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LATE); 99 MODULE_DEPEND(pl061, acpi, 1, 1, 1); 100 MODULE_DEPEND(pl061, gpiobus, 1, 1, 1); 101