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 #include "opt_acpi.h" 29 30 #include <sys/param.h> 31 #include <sys/bus.h> 32 #include <sys/kernel.h> 33 #include <sys/module.h> 34 #include <sys/proc.h> 35 #include <sys/rman.h> 36 37 #include <machine/bus.h> 38 #include <machine/resource.h> 39 40 #include <contrib/dev/acpica/include/acpi.h> 41 #include <contrib/dev/acpica/include/accommon.h> 42 43 #include <dev/acpica/acpivar.h> 44 #include <dev/iicbus/iiconf.h> 45 46 #include <dev/ichiic/ig4_reg.h> 47 #include <dev/ichiic/ig4_var.h> 48 49 static int ig4iic_acpi_probe(device_t dev); 50 static int ig4iic_acpi_attach(device_t dev); 51 static int ig4iic_acpi_detach(device_t dev); 52 53 static char *ig4iic_ids[] = { 54 "INT33C2", 55 "INT33C3", 56 "INT3432", 57 "INT3433", 58 "80860F41", 59 "808622C1", 60 "AMDI0510", 61 "AMDI0010", 62 "AMD0010", 63 "APMC0D0F", 64 NULL 65 }; 66 67 static int 68 ig4iic_acpi_probe(device_t dev) 69 { 70 int rv; 71 72 if (acpi_disabled("ig4iic")) 73 return (ENXIO); 74 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ig4iic_ids, NULL); 75 if (rv > 0) 76 return (rv); 77 78 device_set_desc(dev, "Designware I2C Controller"); 79 return (rv); 80 } 81 82 static int 83 ig4iic_acpi_attach(device_t dev) 84 { 85 ig4iic_softc_t *sc; 86 char *str; 87 int error; 88 89 sc = device_get_softc(dev); 90 91 sc->dev = dev; 92 error = ACPI_ID_PROBE(device_get_parent(dev), dev, ig4iic_ids, &str); 93 if (error > 0) 94 return (error); 95 if (strcmp(str, "APMC0D0F") == 0) { 96 sc->version = IG4_EMAG; 97 } else { 98 /* All the other HIDs matched are Atom SOCs. */ 99 sc->version = IG4_ATOM; 100 } 101 sc->regs_rid = 0; 102 sc->regs_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 103 &sc->regs_rid, RF_ACTIVE); 104 if (sc->regs_res == NULL) { 105 device_printf(dev, "unable to map registers\n"); 106 ig4iic_acpi_detach(dev); 107 return (ENXIO); 108 } 109 sc->intr_rid = 0; 110 sc->intr_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 111 &sc->intr_rid, RF_SHAREABLE | RF_ACTIVE); 112 if (sc->intr_res == NULL) { 113 device_printf(dev, "unable to map interrupt\n"); 114 ig4iic_acpi_detach(dev); 115 return (ENXIO); 116 } 117 sc->platform_attached = true; 118 119 error = ig4iic_attach(sc); 120 if (error) 121 ig4iic_acpi_detach(dev); 122 123 return (error); 124 } 125 126 static int 127 ig4iic_acpi_detach(device_t dev) 128 { 129 ig4iic_softc_t *sc = device_get_softc(dev); 130 int error; 131 132 if (sc->platform_attached) { 133 error = ig4iic_detach(sc); 134 if (error) 135 return (error); 136 sc->platform_attached = false; 137 } 138 139 if (sc->intr_res) { 140 bus_release_resource(dev, SYS_RES_IRQ, 141 sc->intr_rid, sc->intr_res); 142 sc->intr_res = NULL; 143 } 144 if (sc->regs_res) { 145 bus_release_resource(dev, SYS_RES_MEMORY, 146 sc->regs_rid, sc->regs_res); 147 sc->regs_res = NULL; 148 } 149 150 return (0); 151 } 152 153 static int 154 ig4iic_acpi_suspend(device_t dev) 155 { 156 ig4iic_softc_t *sc = device_get_softc(dev); 157 158 return (ig4iic_suspend(sc)); 159 } 160 161 static int 162 ig4iic_acpi_resume(device_t dev) 163 { 164 ig4iic_softc_t *sc = device_get_softc(dev); 165 166 return (ig4iic_resume(sc)); 167 } 168 169 static device_method_t ig4iic_acpi_methods[] = { 170 /* Device interface */ 171 DEVMETHOD(device_probe, ig4iic_acpi_probe), 172 DEVMETHOD(device_attach, ig4iic_acpi_attach), 173 DEVMETHOD(device_detach, ig4iic_acpi_detach), 174 DEVMETHOD(device_suspend, ig4iic_acpi_suspend), 175 DEVMETHOD(device_resume, ig4iic_acpi_resume), 176 177 /* Bus interface */ 178 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 179 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 180 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), 181 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 182 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 183 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 184 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource), 185 186 /* iicbus interface */ 187 DEVMETHOD(iicbus_transfer, ig4iic_transfer), 188 DEVMETHOD(iicbus_reset, ig4iic_reset), 189 DEVMETHOD(iicbus_callback, ig4iic_callback), 190 191 DEVMETHOD_END 192 }; 193 194 static driver_t ig4iic_acpi_driver = { 195 "ig4iic", 196 ig4iic_acpi_methods, 197 sizeof(struct ig4iic_softc), 198 }; 199 200 DRIVER_MODULE_ORDERED(ig4iic, acpi, ig4iic_acpi_driver, 0, 0, SI_ORDER_ANY); 201 MODULE_DEPEND(ig4iic, acpi, 1, 1, 1); 202 ACPI_PNP_INFO(ig4iic_ids); 203