FreeBSD/Linux Kernel Cross Reference
sys/dev/acpica/acpi_sony/acpi_sony.c

     /*-
      * Copyright (c) 2004 Takanori Watanabe
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD: src/sys/dev/acpi_support/acpi_sony.c,v 1.14 2010/02/07 18:36:30 gavin Exp $
     */
    
    #include "opt_acpi.h"
    #include <sys/param.h>
    #include <sys/kernel.h>
    #include <sys/bus.h>
    
    #include "acpi.h"
    
    #include "acpi_if.h"
    #include <sys/module.h>
    #include <dev/acpica/acpivar.h>
    #include <sys/sysctl.h>
    
    #define _COMPONENT      ACPI_OEM
    ACPI_MODULE_NAME("Sony")
    
    #define ACPI_SONY_GET_PID "GPID"
    
    /*
     * SNY5001
     *   This is the ACPI handle for the "Sony Notebook Control" driver under
     *   Windows.
     *   It provides several methods within the ACPI namespace, including:
     *  [GS]BRT [GS]PBR [GS]CTR [GS]PCR [GS]CMI [CDPW GCDP]? GWDP PWAK PWRN 
     *
     * SNY6001
     *   This is the ACPI handle for the "Sony Programmable I/O" driver under
     *   Windows.
     *   It is not yet supported by this driver, but provides control over the
     *   power to the bluetooth, built-in camera and HSDPA modem devices in some
     *   laptops, and also allows some control of the fan speed.
     */
    
    struct acpi_sony_softc {
            int pid;
            struct sysctl_ctx_list  sysctl_ctx;
            struct sysctl_oid       *sysctl_tree;
    };
    static struct acpi_sony_name_list
    {
            char *nodename;
            char *getmethod;
            char *setmethod;
            char *comment;
    } acpi_sony_oids[] = {
            { "brightness", "GBRT", "SBRT", "Display Brightness"},
            { "brightness_default", "GPBR", "SPBR", "Default Display Brightness"},
            { "contrast", "GCTR", "SCTR", "Display Contrast"},
            { "bass_gain", "GMGB", "SMGB", "Multimedia Bass Gain"},
            { "pcr", "GPCR", "SPCR", "???"},
    #if 0
            { "cmi", "GCMI", "SCMI", "???"},
    #endif
            { "wdp", "GWDP", NULL, "???"},
            { "cdp", "GCDP", "CDPW", "CD Power"},  /*shares [\GL03]&0x8 flag*/
            { "azp", "GAZP", "AZPW", "Audio Power"}, 
            { "lnp", "GLNP", "LNPW", "LAN Power"},
            { NULL, NULL, NULL }
    };
    
    static int      acpi_sony_probe(device_t dev);
    static int      acpi_sony_attach(device_t dev);
    static int      acpi_sony_detach(device_t dev);
    static int      sysctl_acpi_sony_gen_handler(SYSCTL_HANDLER_ARGS);
    
    static device_method_t acpi_sony_methods[] = {
            /* Device interface */
            DEVMETHOD(device_probe, acpi_sony_probe),
            DEVMETHOD(device_attach, acpi_sony_attach),
            DEVMETHOD(device_detach, acpi_sony_detach),
    
            DEVMETHOD_END
   };
   
   static driver_t acpi_sony_driver = {
           "acpi_sony",
           acpi_sony_methods,
           sizeof(struct acpi_sony_softc),
   };
   
   static devclass_t acpi_sony_devclass;
   
   DRIVER_MODULE(acpi_sony, acpi, acpi_sony_driver, acpi_sony_devclass,
                 0, 0);
   MODULE_DEPEND(acpi_sony, acpi, 1, 1, 1);
   static char    *sny_id[] = {"SNY5001", NULL};
   
   static int
   acpi_sony_probe(device_t dev)
   {
           int ret = ENXIO;
   
           if (ACPI_ID_PROBE(device_get_parent(dev), dev, sny_id)) {
                   device_set_desc(dev, "Sony notebook controller");
                   ret = 0;
           }
           return (ret);
   }
   
   static int
   acpi_sony_attach(device_t dev)
   {
           struct acpi_sony_softc *sc;
           struct acpi_softc       *acpi_sc;
           int i;
   
           sc = device_get_softc(dev);
           acpi_sc = acpi_device_get_parent_softc(dev);
           acpi_GetInteger(acpi_get_handle(dev), ACPI_SONY_GET_PID, &sc->pid);
           device_printf(dev, "PID %x\n", sc->pid);
           sysctl_ctx_init(&sc->sysctl_ctx);
           sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
                   SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO,
                   "sony", CTLFLAG_RD, 0, "");
           for (i = 0 ; acpi_sony_oids[i].nodename != NULL; i++){
                   SYSCTL_ADD_PROC(&sc->sysctl_ctx,
                       SYSCTL_CHILDREN(sc->sysctl_tree),
                       i, acpi_sony_oids[i].nodename , CTLTYPE_INT |
                       ((acpi_sony_oids[i].setmethod)? CTLFLAG_RW: CTLFLAG_RD),
                       dev, i, sysctl_acpi_sony_gen_handler, "I",
                       acpi_sony_oids[i].comment);
           }
           return (0);
   }
   
   static int 
   acpi_sony_detach(device_t dev)
   {
           return (0);
   }
   
   #if 0
   static int
   acpi_sony_suspend(device_t dev)
   {
           struct acpi_sony_softc *sc = device_get_softc(dev);
           return (0);
   }
   
   static int
   acpi_sony_resume(device_t dev)
   {
           return (0);
   }
   #endif
   
   static int 
   sysctl_acpi_sony_gen_handler(SYSCTL_HANDLER_ARGS)
   {
           device_t        dev = arg1;
           int     function = oidp->oid_arg2;
           int             error = 0, val;
   
           acpi_GetInteger(acpi_get_handle(dev),
               acpi_sony_oids[function].getmethod, &val);
           error = sysctl_handle_int(oidp, &val, 0, req);
           if (error || !req->newptr || !acpi_sony_oids[function].setmethod)
                   return (error);
           acpi_SetInteger(acpi_get_handle(dev),
               acpi_sony_oids[function].setmethod, val);
           return (0);
   }

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