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 ig4iic_softc_t *sc; 72 char *hid; 73 int rv; 74 75 sc = device_get_softc(dev); 76 if (acpi_disabled("ig4iic")) 77 return (ENXIO); 78 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ig4iic_ids, &hid); 79 if (rv > 0) 80 return (rv); 81 82 if (strcmp("AMDI0010", hid) == 0) 83 sc->access_intr_mask = 1; 84 device_set_desc(dev, "Designware I2C Controller"); 85 return (rv); 86 } 87 88 static int 89 ig4iic_acpi_attach(device_t dev) 90 { 91 ig4iic_softc_t *sc; 92 int error; 93 94 sc = device_get_softc(dev); 95 96 sc->dev = dev; 97 /* All the HIDs matched are Atom SOCs. */ 98 sc->version = IG4_ATOM; 99 sc->regs_rid = 0; 100 sc->regs_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 101 &sc->regs_rid, RF_ACTIVE); 102 if (sc->regs_res == NULL) { 103 device_printf(dev, "unable to map registers\n"); 104 ig4iic_acpi_detach(dev); 105 return (ENXIO); 106 } 107 sc->intr_rid = 0; 108 sc->intr_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 109 &sc->intr_rid, RF_SHAREABLE | RF_ACTIVE); 110 if (sc->intr_res == NULL) { 111 device_printf(dev, "unable to map interrupt\n"); 112 ig4iic_acpi_detach(dev); 113 return (ENXIO); 114 } 115 sc->platform_attached = 1; 116 117 error = ig4iic_attach(sc); 118 if (error) 119 ig4iic_acpi_detach(dev); 120 121 return (error); 122 } 123 124 static int 125 ig4iic_acpi_detach(device_t dev) 126 { 127 ig4iic_softc_t *sc = device_get_softc(dev); 128 int error; 129 130 if (sc->platform_attached) { 131 error = ig4iic_detach(sc); 132 if (error) 133 return (error); 134 sc->platform_attached = 0; 135 } 136 137 if (sc->intr_res) { 138 bus_release_resource(dev, SYS_RES_IRQ, 139 sc->intr_rid, sc->intr_res); 140 sc->intr_res = NULL; 141 } 142 if (sc->regs_res) { 143 bus_release_resource(dev, SYS_RES_MEMORY, 144 sc->regs_rid, sc->regs_res); 145 sc->regs_res = NULL; 146 } 147 148 return (0); 149 } 150 151 static device_method_t ig4iic_acpi_methods[] = { 152 /* Device interface */ 153 DEVMETHOD(device_probe, ig4iic_acpi_probe), 154 DEVMETHOD(device_attach, ig4iic_acpi_attach), 155 DEVMETHOD(device_detach, ig4iic_acpi_detach), 156 157 /* iicbus interface */ 158 DEVMETHOD(iicbus_transfer, ig4iic_transfer), 159 DEVMETHOD(iicbus_reset, ig4iic_reset), 160 DEVMETHOD(iicbus_callback, iicbus_null_callback), 161 162 DEVMETHOD_END 163 }; 164 165 static driver_t ig4iic_acpi_driver = { 166 "ig4iic_acpi", 167 ig4iic_acpi_methods, 168 sizeof(struct ig4iic_softc), 169 }; 170 171 static devclass_t ig4iic_acpi_devclass; 172 DRIVER_MODULE(ig4iic_acpi, acpi, ig4iic_acpi_driver, ig4iic_acpi_devclass, 0, 0); 173 174 MODULE_DEPEND(ig4iic_acpi, acpi, 1, 1, 1); 175 MODULE_DEPEND(ig4iic_acpi, pci, 1, 1, 1); 176 MODULE_DEPEND(ig4iic_acpi, iicbus, IICBUS_MINVER, IICBUS_PREFVER, IICBUS_MAXVER); 177 MODULE_VERSION(ig4iic_acpi, 1); 178