/*-
 * 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,
    NULL, NULL);
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)
{
        struct acpi_sony_softc *sc;

        sc = device_get_softc(dev);
        sysctl_ctx_free(&sc->sysctl_ctx);
        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);
}