plgpio_acpi.c revision 1.1.2.2
1 1.1.2.2 pgoyette /* $NetBSD: plgpio_acpi.c,v 1.1.2.2 2018/10/20 06:58:30 pgoyette Exp $ */ 2 1.1.2.2 pgoyette 3 1.1.2.2 pgoyette /*- 4 1.1.2.2 pgoyette * Copyright (c) 2018 The NetBSD Foundation, Inc. 5 1.1.2.2 pgoyette * All rights reserved. 6 1.1.2.2 pgoyette * 7 1.1.2.2 pgoyette * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.2 pgoyette * by Jared McNeill <jmcneill (at) invisible.ca>. 9 1.1.2.2 pgoyette * 10 1.1.2.2 pgoyette * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 pgoyette * modification, are permitted provided that the following conditions 12 1.1.2.2 pgoyette * are met: 13 1.1.2.2 pgoyette * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 pgoyette * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 pgoyette * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 pgoyette * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 pgoyette * documentation and/or other materials provided with the distribution. 18 1.1.2.2 pgoyette * 19 1.1.2.2 pgoyette * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1.2.2 pgoyette * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1.2.2 pgoyette * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1.2.2 pgoyette * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1.2.2 pgoyette * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1.2.2 pgoyette * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1.2.2 pgoyette * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1.2.2 pgoyette * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1.2.2 pgoyette * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1.2.2 pgoyette * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1.2.2 pgoyette * POSSIBILITY OF SUCH DAMAGE. 30 1.1.2.2 pgoyette */ 31 1.1.2.2 pgoyette 32 1.1.2.2 pgoyette #include <sys/cdefs.h> 33 1.1.2.2 pgoyette __KERNEL_RCSID(0, "$NetBSD: plgpio_acpi.c,v 1.1.2.2 2018/10/20 06:58:30 pgoyette Exp $"); 34 1.1.2.2 pgoyette 35 1.1.2.2 pgoyette #include <sys/param.h> 36 1.1.2.2 pgoyette #include <sys/bus.h> 37 1.1.2.2 pgoyette #include <sys/cpu.h> 38 1.1.2.2 pgoyette #include <sys/device.h> 39 1.1.2.2 pgoyette #include <sys/gpio.h> 40 1.1.2.2 pgoyette 41 1.1.2.2 pgoyette #include <dev/acpi/acpireg.h> 42 1.1.2.2 pgoyette #include <dev/acpi/acpivar.h> 43 1.1.2.2 pgoyette 44 1.1.2.2 pgoyette #include <dev/gpio/gpiovar.h> 45 1.1.2.2 pgoyette #include <dev/ic/pl061var.h> 46 1.1.2.2 pgoyette 47 1.1.2.2 pgoyette static int plgpio_acpi_match(device_t, cfdata_t, void *); 48 1.1.2.2 pgoyette static void plgpio_acpi_attach(device_t, device_t, void *); 49 1.1.2.2 pgoyette 50 1.1.2.2 pgoyette CFATTACH_DECL_NEW(plgpio_acpi, sizeof(struct plgpio_softc), plgpio_acpi_match, plgpio_acpi_attach, NULL, NULL); 51 1.1.2.2 pgoyette 52 1.1.2.2 pgoyette static const char * const compatible[] = { 53 1.1.2.2 pgoyette "ARMH0061", 54 1.1.2.2 pgoyette NULL 55 1.1.2.2 pgoyette }; 56 1.1.2.2 pgoyette 57 1.1.2.2 pgoyette static int 58 1.1.2.2 pgoyette plgpio_acpi_match(device_t parent, cfdata_t cf, void *aux) 59 1.1.2.2 pgoyette { 60 1.1.2.2 pgoyette struct acpi_attach_args *aa = aux; 61 1.1.2.2 pgoyette 62 1.1.2.2 pgoyette if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 63 1.1.2.2 pgoyette return 0; 64 1.1.2.2 pgoyette 65 1.1.2.2 pgoyette return acpi_match_hid(aa->aa_node->ad_devinfo, compatible); 66 1.1.2.2 pgoyette } 67 1.1.2.2 pgoyette 68 1.1.2.2 pgoyette static void 69 1.1.2.2 pgoyette plgpio_acpi_attach(device_t parent, device_t self, void *aux) 70 1.1.2.2 pgoyette { 71 1.1.2.2 pgoyette struct plgpio_softc * const sc = device_private(self); 72 1.1.2.2 pgoyette struct acpi_attach_args *aa = aux; 73 1.1.2.2 pgoyette struct acpi_resources res; 74 1.1.2.2 pgoyette struct acpi_mem *mem; 75 1.1.2.2 pgoyette ACPI_STATUS rv; 76 1.1.2.2 pgoyette int error; 77 1.1.2.2 pgoyette 78 1.1.2.2 pgoyette sc->sc_dev = self; 79 1.1.2.2 pgoyette 80 1.1.2.2 pgoyette rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS", 81 1.1.2.2 pgoyette &res, &acpi_resource_parse_ops_default); 82 1.1.2.2 pgoyette if (ACPI_FAILURE(rv)) 83 1.1.2.2 pgoyette return; 84 1.1.2.2 pgoyette 85 1.1.2.2 pgoyette mem = acpi_res_mem(&res, 0); 86 1.1.2.2 pgoyette if (mem == NULL) { 87 1.1.2.2 pgoyette aprint_error_dev(self, "couldn't find mem resource\n"); 88 1.1.2.2 pgoyette goto done; 89 1.1.2.2 pgoyette } 90 1.1.2.2 pgoyette 91 1.1.2.2 pgoyette sc->sc_dev = self; 92 1.1.2.2 pgoyette sc->sc_bst = aa->aa_memt; 93 1.1.2.2 pgoyette error = bus_space_map(sc->sc_bst, mem->ar_base, mem->ar_length, 0, &sc->sc_bsh); 94 1.1.2.2 pgoyette if (error) { 95 1.1.2.2 pgoyette aprint_error_dev(self, "couldn't map registers\n"); 96 1.1.2.2 pgoyette return; 97 1.1.2.2 pgoyette } 98 1.1.2.2 pgoyette 99 1.1.2.2 pgoyette plgpio_attach(sc); 100 1.1.2.2 pgoyette 101 1.1.2.2 pgoyette done: 102 1.1.2.2 pgoyette acpi_resource_cleanup(&res); 103 1.1.2.2 pgoyette } 104
Indexes created Mon Sep 29 18:09:42 GMT 2025