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/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 <machine/intr.h> 40 41 #include <contrib/dev/acpica/include/acpi.h> 42 #include <contrib/dev/acpica/include/accommon.h> 43 44 #include <dev/acpica/acpivar.h> 45 #include <dev/gpio/gpiobusvar.h> 46 47 #include "pl061.h" 48 49 static char *gpio_ids[] = { "ARMH0061", NULL }; 50 51 static int 52 pl061_acpi_probe(device_t dev) 53 { 54 int rv; 55 56 if (acpi_disabled("gpio")) 57 return (ENXIO); 58 59 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, gpio_ids, NULL); 60 61 if (rv <= 0) 62 device_set_desc(dev, "Arm PL061 GPIO Controller"); 63 64 return (rv); 65 } 66 67 static int 68 pl061_acpi_attach(device_t dev) 69 { 70 int error; 71 72 error = pl061_attach(dev); 73 if (error != 0) 74 return (error); 75 76 if (!intr_pic_register(dev, ACPI_GPIO_XREF)) { 77 device_printf(dev, "couldn't register PIC\n"); 78 pl061_detach(dev); 79 error = ENXIO; 80 } 81 82 return (error); 83 } 84 85 static device_method_t pl061_acpi_methods[] = { 86 /* Device interface */ 87 DEVMETHOD(device_probe, pl061_acpi_probe), 88 DEVMETHOD(device_attach, pl061_acpi_attach), 89 90 DEVMETHOD_END 91 }; 92 93 DEFINE_CLASS_1(gpio, pl061_acpi_driver, pl061_acpi_methods, 94 sizeof(struct pl061_softc), pl061_driver); 95 96 EARLY_DRIVER_MODULE(pl061, acpi, pl061_acpi_driver, NULL, NULL, 97 BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LATE); 98 MODULE_DEPEND(pl061, acpi, 1, 1, 1); 99 MODULE_DEPEND(pl061, gpiobus, 1, 1, 1); 100