1 /*- 2 * Copyright (c) 2016 Oleksandr Tymoshenko <gonzo@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include "opt_acpi.h" 31 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/kernel.h> 35 #include <sys/module.h> 36 #include <sys/proc.h> 37 #include <sys/rman.h> 38 39 #include <machine/bus.h> 40 #include <machine/resource.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/iicbus/iiconf.h> 47 48 #include <dev/ichiic/ig4_reg.h> 49 #include <dev/ichiic/ig4_var.h> 50 51 static int ig4iic_acpi_probe(device_t dev); 52 static int ig4iic_acpi_attach(device_t dev); 53 static int ig4iic_acpi_detach(device_t dev); 54 55 static char *ig4iic_ids[] = { 56 "INT33C2", 57 "INT33C3", 58 "INT3432", 59 "INT3433", 60 "80860F41", 61 "808622C1", 62 "AMDI0510", 63 "APMC0D0F", 64 NULL 65 }; 66 67 static int 68 ig4iic_acpi_probe(device_t dev) 69 { 70 71 if (acpi_disabled("ig4iic") || 72 ACPI_ID_PROBE(device_get_parent(dev), dev, ig4iic_ids) == NULL) 73 return (ENXIO); 74 75 device_set_desc(dev, "Designware I2C Controller"); 76 return (0); 77 } 78 79 static int 80 ig4iic_acpi_attach(device_t dev) 81 { 82 ig4iic_softc_t *sc; 83 int error; 84 85 sc = device_get_softc(dev); 86 87 sc->dev = dev; 88 sc->regs_rid = 0; 89 sc->regs_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 90 &sc->regs_rid, RF_ACTIVE); 91 if (sc->regs_res == NULL) { 92 device_printf(dev, "unable to map registers\n"); 93 ig4iic_acpi_detach(dev); 94 return (ENXIO); 95 } 96 sc->intr_rid = 0; 97 sc->intr_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 98 &sc->intr_rid, RF_SHAREABLE | RF_ACTIVE); 99 if (sc->intr_res == NULL) { 100 device_printf(dev, "unable to map interrupt\n"); 101 ig4iic_acpi_detach(dev); 102 return (ENXIO); 103 } 104 sc->platform_attached = 1; 105 106 error = ig4iic_attach(sc); 107 if (error) 108 ig4iic_acpi_detach(dev); 109 110 return (error); 111 } 112 113 static int 114 ig4iic_acpi_detach(device_t dev) 115 { 116 ig4iic_softc_t *sc = device_get_softc(dev); 117 int error; 118 119 if (sc->platform_attached) { 120 error = ig4iic_detach(sc); 121 if (error) 122 return (error); 123 sc->platform_attached = 0; 124 } 125 126 if (sc->intr_res) { 127 bus_release_resource(dev, SYS_RES_IRQ, 128 sc->intr_rid, sc->intr_res); 129 sc->intr_res = NULL; 130 } 131 if (sc->regs_res) { 132 bus_release_resource(dev, SYS_RES_MEMORY, 133 sc->regs_rid, sc->regs_res); 134 sc->regs_res = NULL; 135 } 136 137 return (0); 138 } 139 140 static device_method_t ig4iic_acpi_methods[] = { 141 /* Device interface */ 142 DEVMETHOD(device_probe, ig4iic_acpi_probe), 143 DEVMETHOD(device_attach, ig4iic_acpi_attach), 144 DEVMETHOD(device_detach, ig4iic_acpi_detach), 145 146 /* iicbus interface */ 147 DEVMETHOD(iicbus_transfer, ig4iic_transfer), 148 DEVMETHOD(iicbus_reset, ig4iic_reset), 149 DEVMETHOD(iicbus_callback, iicbus_null_callback), 150 151 DEVMETHOD_END 152 }; 153 154 static driver_t ig4iic_acpi_driver = { 155 "ig4iic_acpi", 156 ig4iic_acpi_methods, 157 sizeof(struct ig4iic_softc), 158 }; 159 160 static devclass_t ig4iic_acpi_devclass; 161 DRIVER_MODULE(ig4iic_acpi, acpi, ig4iic_acpi_driver, ig4iic_acpi_devclass, 0, 0); 162 163 MODULE_DEPEND(ig4iic_acpi, acpi, 1, 1, 1); 164 MODULE_DEPEND(ig4iic_acpi, pci, 1, 1, 1); 165 MODULE_DEPEND(ig4iic_acpi, iicbus, IICBUS_MINVER, IICBUS_PREFVER, IICBUS_MAXVER); 166 MODULE_VERSION(ig4iic_acpi, 1); 167