sys/dev/ichiic/ig4_acpi.c

   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);