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 "AMDI0010", 64 "APMC0D0F", 65 NULL 66 }; 67 68 static int 69 ig4iic_acpi_probe(device_t dev) 70 { 71 int rv; 72 73 if (acpi_disabled("ig4iic")) 74 return (ENXIO); 75 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ig4iic_ids, NULL); 76 if (rv > 0) 77 return (rv); 78 79 device_set_desc(dev, "Designware I2C Controller"); 80 return (rv); 81 } 82 83 static int 84 ig4iic_acpi_attach(device_t dev) 85 { 86 ig4iic_softc_t *sc; 87 int error; 88 89 sc = device_get_softc(dev); 90 91 sc->dev = dev; 92 /* All the HIDs matched are Atom SOCs. */ 93 sc->version = IG4_ATOM; 94 sc->regs_rid = 0; 95 sc->regs_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 96 &sc->regs_rid, RF_ACTIVE); 97 if (sc->regs_res == NULL) { 98 device_printf(dev, "unable to map registers\n"); 99 ig4iic_acpi_detach(dev); 100 return (ENXIO); 101 } 102 sc->intr_rid = 0; 103 sc->intr_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 104 &sc->intr_rid, RF_SHAREABLE | RF_ACTIVE); 105 if (sc->intr_res == NULL) { 106 device_printf(dev, "unable to map interrupt\n"); 107 ig4iic_acpi_detach(dev); 108 return (ENXIO); 109 } 110 sc->platform_attached = 1; 111 112 error = ig4iic_attach(sc); 113 if (error) 114 ig4iic_acpi_detach(dev); 115 116 return (error); 117 } 118 119 static int 120 ig4iic_acpi_detach(device_t dev) 121 { 122 ig4iic_softc_t *sc = device_get_softc(dev); 123 int error; 124 125 if (sc->platform_attached) { 126 error = ig4iic_detach(sc); 127 if (error) 128 return (error); 129 sc->platform_attached = 0; 130 } 131 132 if (sc->intr_res) { 133 bus_release_resource(dev, SYS_RES_IRQ, 134 sc->intr_rid, sc->intr_res); 135 sc->intr_res = NULL; 136 } 137 if (sc->regs_res) { 138 bus_release_resource(dev, SYS_RES_MEMORY, 139 sc->regs_rid, sc->regs_res); 140 sc->regs_res = NULL; 141 } 142 143 return (0); 144 } 145 146 static int 147 ig4iic_acpi_suspend(device_t dev) 148 { 149 ig4iic_softc_t *sc = device_get_softc(dev); 150 151 return (ig4iic_suspend(sc)); 152 } 153 154 static int 155 ig4iic_acpi_resume(device_t dev) 156 { 157 ig4iic_softc_t *sc = device_get_softc(dev); 158 159 return (ig4iic_resume(sc)); 160 } 161 162 static device_method_t ig4iic_acpi_methods[] = { 163 /* Device interface */ 164 DEVMETHOD(device_probe, ig4iic_acpi_probe), 165 DEVMETHOD(device_attach, ig4iic_acpi_attach), 166 DEVMETHOD(device_detach, ig4iic_acpi_detach), 167 DEVMETHOD(device_suspend, ig4iic_acpi_suspend), 168 DEVMETHOD(device_resume, ig4iic_acpi_resume), 169 170 /* Bus interface */ 171 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 172 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 173 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), 174 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 175 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 176 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 177 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource), 178 179 /* iicbus interface */ 180 DEVMETHOD(iicbus_transfer, ig4iic_transfer), 181 DEVMETHOD(iicbus_reset, ig4iic_reset), 182 DEVMETHOD(iicbus_callback, ig4iic_callback), 183 184 DEVMETHOD_END 185 }; 186 187 static driver_t ig4iic_acpi_driver = { 188 "ig4iic", 189 ig4iic_acpi_methods, 190 sizeof(struct ig4iic_softc), 191 }; 192 193 DRIVER_MODULE_ORDERED(ig4iic, acpi, ig4iic_acpi_driver, ig4iic_devclass, 0, 0, 194 SI_ORDER_ANY); 195 MODULE_DEPEND(ig4iic, acpi, 1, 1, 1); 196