sony-laptop: sonypi backward compatibility code

[mirror_ubuntu-artful-kernel.git] / drivers / misc / sony-laptop.c

/*
 * ACPI Sony Notebook Control Driver (SNC and SPIC)
 *
 * Copyright (C) 2004-2005 Stelian Pop <stelian@popies.net>
 * Copyright (C) 2007 Mattia Dongili <malattia@linux.it>
 *
 * Parts of this driver inspired from asus_acpi.c and ibm_acpi.c
 * which are copyrighted by their respective authors.
 *
 * The SNY6001 driver part is based on the sonypi driver which includes
 * material from:
 *
 * Copyright (C) 2001-2005 Stelian Pop <stelian@popies.net>
 *
 * Copyright (C) 2005 Narayanan R S <nars@kadamba.org>
 *
 * Copyright (C) 2001-2002 Alcôve <www.alcove.com>
 *
 * Copyright (C) 2001 Michael Ashley <m.ashley@unsw.edu.au>
 *
 * Copyright (C) 2001 Junichi Morita <jun1m@mars.dti.ne.jp>
 *
 * Copyright (C) 2000 Takaya Kinjo <t-kinjo@tc4.so-net.ne.jp>
 *
 * Copyright (C) 2000 Andrew Tridgell <tridge@valinux.com>
 *
 * Earlier work by Werner Almesberger, Paul `Rusty' Russell and Paul Mackerras.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/backlight.h>
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/dmi.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/kfifo.h>
#include <linux/workqueue.h>
#include <linux/acpi.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_bus.h>
#include <asm/uaccess.h>
#include <linux/sonypi.h>
#ifdef CONFIG_SONY_LAPTOP_OLD
#include <linux/poll.h>
#include <linux/miscdevice.h>
#endif

#define DRV_PFX                 "sony-laptop: "
#define dprintk(msg...)         do {                    \
        if (debug) printk(KERN_WARNING DRV_PFX  msg);   \
} while (0)

#define SONY_LAPTOP_DRIVER_VERSION      "0.5"

#define SONY_NC_CLASS           "sony-nc"
#define SONY_NC_HID             "SNY5001"
#define SONY_NC_DRIVER_NAME     "Sony Notebook Control Driver"

#define SONY_PIC_CLASS          "sony-pic"
#define SONY_PIC_HID            "SNY6001"
#define SONY_PIC_DRIVER_NAME    "Sony Programmable IO Control Driver"

MODULE_AUTHOR("Stelian Pop, Mattia Dongili");
MODULE_DESCRIPTION("Sony laptop extras driver (SPIC and SNC ACPI device)");
MODULE_LICENSE("GPL");
MODULE_VERSION(SONY_LAPTOP_DRIVER_VERSION);

static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help "
                 "the development of this driver");

static int no_spic;             /* = 0 */
module_param(no_spic, int, 0444);
MODULE_PARM_DESC(no_spic,
                 "set this if you don't want to enable the SPIC device");

static int compat;              /* = 0 */
module_param(compat, int, 0444);
MODULE_PARM_DESC(compat,
                 "set this if you want to enable backward compatibility mode");

static unsigned long mask = 0xffffffff;
module_param(mask, ulong, 0644);
MODULE_PARM_DESC(mask,
                 "set this to the mask of event you want to enable (see doc)");

#ifdef CONFIG_SONY_LAPTOP_OLD
static int minor = -1;
module_param(minor, int, 0);
MODULE_PARM_DESC(minor,
                 "minor number of the misc device for the SPIC compatibility code, "
                 "default is -1 (automatic)");
#endif

/*********** Input Devices ***********/

#define SONY_LAPTOP_BUF_SIZE    128
struct sony_laptop_input_s {
        atomic_t                users;
        struct input_dev        *jog_dev;
        struct input_dev        *key_dev;
        struct kfifo            *fifo;
        spinlock_t              fifo_lock;
        struct workqueue_struct *wq;
};
static struct sony_laptop_input_s sony_laptop_input = {
        .users = ATOMIC_INIT(0),
};

struct sony_laptop_keypress {
        struct input_dev *dev;
        int key;
};

/* Correspondance table between sonypi events and input layer events */
static struct {
        int sonypiev;
        int inputev;
} sony_laptop_inputkeys[] = {
        { SONYPI_EVENT_CAPTURE_PRESSED,         KEY_CAMERA },
        { SONYPI_EVENT_FNKEY_ONLY,              KEY_FN },
        { SONYPI_EVENT_FNKEY_ESC,               KEY_FN_ESC },
        { SONYPI_EVENT_FNKEY_F1,                KEY_FN_F1 },
        { SONYPI_EVENT_FNKEY_F2,                KEY_FN_F2 },
        { SONYPI_EVENT_FNKEY_F3,                KEY_FN_F3 },
        { SONYPI_EVENT_FNKEY_F4,                KEY_FN_F4 },
        { SONYPI_EVENT_FNKEY_F5,                KEY_FN_F5 },
        { SONYPI_EVENT_FNKEY_F6,                KEY_FN_F6 },
        { SONYPI_EVENT_FNKEY_F7,                KEY_FN_F7 },
        { SONYPI_EVENT_FNKEY_F8,                KEY_FN_F8 },
        { SONYPI_EVENT_FNKEY_F9,                KEY_FN_F9 },
        { SONYPI_EVENT_FNKEY_F10,               KEY_FN_F10 },
        { SONYPI_EVENT_FNKEY_F11,               KEY_FN_F11 },
        { SONYPI_EVENT_FNKEY_F12,               KEY_FN_F12 },
        { SONYPI_EVENT_FNKEY_1,                 KEY_FN_1 },
        { SONYPI_EVENT_FNKEY_2,                 KEY_FN_2 },
        { SONYPI_EVENT_FNKEY_D,                 KEY_FN_D },
        { SONYPI_EVENT_FNKEY_E,                 KEY_FN_E },
        { SONYPI_EVENT_FNKEY_F,                 KEY_FN_F },
        { SONYPI_EVENT_FNKEY_S,                 KEY_FN_S },
        { SONYPI_EVENT_FNKEY_B,                 KEY_FN_B },
        { SONYPI_EVENT_BLUETOOTH_PRESSED,       KEY_BLUE },
        { SONYPI_EVENT_BLUETOOTH_ON,            KEY_BLUE },
        { SONYPI_EVENT_PKEY_P1,                 KEY_PROG1 },
        { SONYPI_EVENT_PKEY_P2,                 KEY_PROG2 },
        { SONYPI_EVENT_PKEY_P3,                 KEY_PROG3 },
        { SONYPI_EVENT_BACK_PRESSED,            KEY_BACK },
        { SONYPI_EVENT_HELP_PRESSED,            KEY_HELP },
        { SONYPI_EVENT_ZOOM_PRESSED,            KEY_ZOOM },
        { SONYPI_EVENT_THUMBPHRASE_PRESSED,     BTN_THUMB },
        { 0, 0 },
};

/* release buttons after a short delay if pressed */
static void do_sony_laptop_release_key(struct work_struct *work)
{
        struct sony_laptop_keypress kp;

        while (kfifo_get(sony_laptop_input.fifo, (unsigned char *)&kp,
                         sizeof(kp)) == sizeof(kp)) {
                msleep(10);
                input_report_key(kp.dev, kp.key, 0);
                input_sync(kp.dev);
        }
}
static DECLARE_WORK(sony_laptop_release_key_work,
                do_sony_laptop_release_key);

/* forward event to the input subsytem */
static void sony_laptop_report_input_event(u8 event)
{
        struct input_dev *jog_dev = sony_laptop_input.jog_dev;
        struct input_dev *key_dev = sony_laptop_input.key_dev;
        struct sony_laptop_keypress kp = { NULL };
        int i;

        if (event == SONYPI_EVENT_FNKEY_RELEASED) {
                /* Nothing, not all VAIOs generate this event */
                return;
        }

        /* report events */
        switch (event) {
        /* jog_dev events */
        case SONYPI_EVENT_JOGDIAL_UP:
        case SONYPI_EVENT_JOGDIAL_UP_PRESSED:
                input_report_rel(jog_dev, REL_WHEEL, 1);
                input_sync(jog_dev);
                return;

        case SONYPI_EVENT_JOGDIAL_DOWN:
        case SONYPI_EVENT_JOGDIAL_DOWN_PRESSED:
                input_report_rel(jog_dev, REL_WHEEL, -1);
                input_sync(jog_dev);
                return;

        /* key_dev events */
        case SONYPI_EVENT_JOGDIAL_PRESSED:
                kp.key = BTN_MIDDLE;
                kp.dev = jog_dev;
                break;

        default:
                for (i = 0; sony_laptop_inputkeys[i].sonypiev; i++)
                        if (event == sony_laptop_inputkeys[i].sonypiev) {
                                kp.dev = key_dev;
                                kp.key = sony_laptop_inputkeys[i].inputev;
                                break;
                        }
                break;
        }

        if (kp.dev) {
                input_report_key(kp.dev, kp.key, 1);
                input_sync(kp.dev);
                kfifo_put(sony_laptop_input.fifo,
                          (unsigned char *)&kp, sizeof(kp));

                if (!work_pending(&sony_laptop_release_key_work))
                        queue_work(sony_laptop_input.wq,
                                        &sony_laptop_release_key_work);
        } else
                dprintk("unknown input event %.2x\n", event);
}

static int sony_laptop_setup_input(void)
{
        struct input_dev *jog_dev;
        struct input_dev *key_dev;
        int i;
        int error;

        /* don't run again if already initialized */
        if (atomic_add_return(1, &sony_laptop_input.users) > 1)
                return 0;

        /* kfifo */
        spin_lock_init(&sony_laptop_input.fifo_lock);
        sony_laptop_input.fifo =
                kfifo_alloc(SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
                            &sony_laptop_input.fifo_lock);
        if (IS_ERR(sony_laptop_input.fifo)) {
                printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
                error = PTR_ERR(sony_laptop_input.fifo);
                goto err_dec_users;
        }

        /* init workqueue */
        sony_laptop_input.wq = create_singlethread_workqueue("sony-laptop");
        if (!sony_laptop_input.wq) {
                printk(KERN_ERR DRV_PFX
                                "Unabe to create workqueue.\n");
                error = -ENXIO;
                goto err_free_kfifo;
        }

        /* input keys */
        key_dev = input_allocate_device();
        if (!key_dev) {
                error = -ENOMEM;
                goto err_destroy_wq;
        }

        key_dev->name = "Sony Vaio Keys";
        key_dev->id.bustype = BUS_ISA;
        key_dev->id.vendor = PCI_VENDOR_ID_SONY;

        /* Initialize the Input Drivers: special keys */
        key_dev->evbit[0] = BIT(EV_KEY);
        for (i = 0; sony_laptop_inputkeys[i].sonypiev; i++)
                if (sony_laptop_inputkeys[i].inputev)
                        set_bit(sony_laptop_inputkeys[i].inputev,
                                        key_dev->keybit);

        error = input_register_device(key_dev);
        if (error)
                goto err_free_keydev;

        sony_laptop_input.key_dev = key_dev;

        /* jogdial */
        jog_dev = input_allocate_device();
        if (!jog_dev) {
                error = -ENOMEM;
                goto err_unregister_keydev;
        }

        jog_dev->name = "Sony Vaio Jogdial";
        jog_dev->id.bustype = BUS_ISA;
        jog_dev->id.vendor = PCI_VENDOR_ID_SONY;

        jog_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
        jog_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_MIDDLE);
        jog_dev->relbit[0] = BIT(REL_WHEEL);

        error = input_register_device(jog_dev);
        if (error)
                goto err_free_jogdev;

        sony_laptop_input.jog_dev = jog_dev;

        return 0;

err_free_jogdev:
        input_free_device(jog_dev);

err_unregister_keydev:
        input_unregister_device(key_dev);
        /* to avoid kref underflow below at input_free_device */
        key_dev = NULL;

err_free_keydev:
        input_free_device(key_dev);

err_destroy_wq:
        destroy_workqueue(sony_laptop_input.wq);

err_free_kfifo:
        kfifo_free(sony_laptop_input.fifo);

err_dec_users:
        atomic_dec(&sony_laptop_input.users);
        return error;
}

static void sony_laptop_remove_input(void)
{
        /* cleanup only after the last user has gone */
        if (!atomic_dec_and_test(&sony_laptop_input.users))
                return;

        /* flush workqueue first */
        flush_workqueue(sony_laptop_input.wq);

        /* destroy input devs */
        input_unregister_device(sony_laptop_input.key_dev);
        sony_laptop_input.key_dev = NULL;

        if (sony_laptop_input.jog_dev) {
                input_unregister_device(sony_laptop_input.jog_dev);
                sony_laptop_input.jog_dev = NULL;
        }

        destroy_workqueue(sony_laptop_input.wq);
        kfifo_free(sony_laptop_input.fifo);
}

/*********** Platform Device ***********/

static atomic_t sony_pf_users = ATOMIC_INIT(0);
static struct platform_driver sony_pf_driver = {
        .driver = {
                   .name = "sony-laptop",
                   .owner = THIS_MODULE,
                   }
};
static struct platform_device *sony_pf_device;

static int sony_pf_add(void)
{
        int ret = 0;

        /* don't run again if already initialized */
        if (atomic_add_return(1, &sony_pf_users) > 1)
                return 0;

        ret = platform_driver_register(&sony_pf_driver);
        if (ret)
                goto out;

        sony_pf_device = platform_device_alloc("sony-laptop", -1);
        if (!sony_pf_device) {
                ret = -ENOMEM;
                goto out_platform_registered;
        }

        ret = platform_device_add(sony_pf_device);
        if (ret)
                goto out_platform_alloced;

        return 0;

      out_platform_alloced:
        platform_device_put(sony_pf_device);
        sony_pf_device = NULL;
      out_platform_registered:
        platform_driver_unregister(&sony_pf_driver);
      out:
        atomic_dec(&sony_pf_users);
        return ret;
}

static void sony_pf_remove(void)
{
        /* deregister only after the last user has gone */
        if (!atomic_dec_and_test(&sony_pf_users))
                return;

        platform_device_del(sony_pf_device);
        platform_device_put(sony_pf_device);
        platform_driver_unregister(&sony_pf_driver);
}

/*********** SNC (SNY5001) Device ***********/

/* the device uses 1-based values, while the backlight subsystem uses
   0-based values */
#define SONY_MAX_BRIGHTNESS     8

#define SNC_VALIDATE_IN         0
#define SNC_VALIDATE_OUT        1

static ssize_t sony_nc_sysfs_show(struct device *, struct device_attribute *,
                              char *);
static ssize_t sony_nc_sysfs_store(struct device *, struct device_attribute *,
                               const char *, size_t);
static int boolean_validate(const int, const int);
static int brightness_default_validate(const int, const int);

struct sony_nc_value {
        char *name;             /* name of the entry */
        char **acpiget;         /* names of the ACPI get function */
        char **acpiset;         /* names of the ACPI set function */
        int (*validate)(const int, const int);  /* input/output validation */
        int value;              /* current setting */
        int valid;              /* Has ever been set */
        int debug;              /* active only in debug mode ? */
        struct device_attribute devattr;        /* sysfs atribute */
};

#define SNC_HANDLE_NAMES(_name, _values...) \
        static char *snc_##_name[] = { _values, NULL }

#define SNC_HANDLE(_name, _getters, _setters, _validate, _debug) \
        { \
                .name           = __stringify(_name), \
                .acpiget        = _getters, \
                .acpiset        = _setters, \
                .validate       = _validate, \
                .debug          = _debug, \
                .devattr        = __ATTR(_name, 0, sony_nc_sysfs_show, sony_nc_sysfs_store), \
        }

#define SNC_HANDLE_NULL { .name = NULL }

SNC_HANDLE_NAMES(fnkey_get, "GHKE");

SNC_HANDLE_NAMES(brightness_def_get, "GPBR");
SNC_HANDLE_NAMES(brightness_def_set, "SPBR");

SNC_HANDLE_NAMES(cdpower_get, "GCDP");
SNC_HANDLE_NAMES(cdpower_set, "SCDP", "CDPW");

SNC_HANDLE_NAMES(audiopower_get, "GAZP");
SNC_HANDLE_NAMES(audiopower_set, "AZPW");

SNC_HANDLE_NAMES(lanpower_get, "GLNP");
SNC_HANDLE_NAMES(lanpower_set, "LNPW");

SNC_HANDLE_NAMES(PID_get, "GPID");

SNC_HANDLE_NAMES(CTR_get, "GCTR");
SNC_HANDLE_NAMES(CTR_set, "SCTR");

SNC_HANDLE_NAMES(PCR_get, "GPCR");
SNC_HANDLE_NAMES(PCR_set, "SPCR");

SNC_HANDLE_NAMES(CMI_get, "GCMI");
SNC_HANDLE_NAMES(CMI_set, "SCMI");

static struct sony_nc_value sony_nc_values[] = {
        SNC_HANDLE(brightness_default, snc_brightness_def_get,
                        snc_brightness_def_set, brightness_default_validate, 0),
        SNC_HANDLE(fnkey, snc_fnkey_get, NULL, NULL, 0),
        SNC_HANDLE(cdpower, snc_cdpower_get, snc_cdpower_set, boolean_validate, 0),
        SNC_HANDLE(audiopower, snc_audiopower_get, snc_audiopower_set,
                        boolean_validate, 0),
        SNC_HANDLE(lanpower, snc_lanpower_get, snc_lanpower_set,
                        boolean_validate, 1),
        /* unknown methods */
        SNC_HANDLE(PID, snc_PID_get, NULL, NULL, 1),
        SNC_HANDLE(CTR, snc_CTR_get, snc_CTR_set, NULL, 1),
        SNC_HANDLE(PCR, snc_PCR_get, snc_PCR_set, NULL, 1),
        SNC_HANDLE(CMI, snc_CMI_get, snc_CMI_set, NULL, 1),
        SNC_HANDLE_NULL
};

static acpi_handle sony_nc_acpi_handle;
static struct acpi_device *sony_nc_acpi_device = NULL;

/*
 * acpi_evaluate_object wrappers
 */
static int acpi_callgetfunc(acpi_handle handle, char *name, int *result)
{
        struct acpi_buffer output;
        union acpi_object out_obj;
        acpi_status status;

        output.length = sizeof(out_obj);
        output.pointer = &out_obj;

        status = acpi_evaluate_object(handle, name, NULL, &output);
        if ((status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER)) {
                *result = out_obj.integer.value;
                return 0;
        }

        printk(KERN_WARNING DRV_PFX "acpi_callreadfunc failed\n");

        return -1;
}

static int acpi_callsetfunc(acpi_handle handle, char *name, int value,
                            int *result)
{
        struct acpi_object_list params;
        union acpi_object in_obj;
        struct acpi_buffer output;
        union acpi_object out_obj;
        acpi_status status;

        params.count = 1;
        params.pointer = &in_obj;
        in_obj.type = ACPI_TYPE_INTEGER;
        in_obj.integer.value = value;

        output.length = sizeof(out_obj);
        output.pointer = &out_obj;

        status = acpi_evaluate_object(handle, name, &params, &output);
        if (status == AE_OK) {
                if (result != NULL) {
                        if (out_obj.type != ACPI_TYPE_INTEGER) {
                                printk(KERN_WARNING DRV_PFX "acpi_evaluate_object bad "
                                       "return type\n");
                                return -1;
                        }
                        *result = out_obj.integer.value;
                }
                return 0;
        }

        printk(KERN_WARNING DRV_PFX "acpi_evaluate_object failed\n");

        return -1;
}

/*
 * sony_nc_values input/output validate functions
 */

/* brightness_default_validate:
 *
 * manipulate input output values to keep consistency with the
 * backlight framework for which brightness values are 0-based.
 */
static int brightness_default_validate(const int direction, const int value)
{
        switch (direction) {
                case SNC_VALIDATE_OUT:
                        return value - 1;
                case SNC_VALIDATE_IN:
                        if (value >= 0 && value < SONY_MAX_BRIGHTNESS)
                                return value + 1;
        }
        return -EINVAL;
}

/* boolean_validate:
 *
 * on input validate boolean values 0/1, on output just pass the
 * received value.
 */
static int boolean_validate(const int direction, const int value)
{
        if (direction == SNC_VALIDATE_IN) {
                if (value != 0 && value != 1)
                        return -EINVAL;
        }
        return value;
}

/*
 * Sysfs show/store common to all sony_nc_values
 */
static ssize_t sony_nc_sysfs_show(struct device *dev, struct device_attribute *attr,
                              char *buffer)
{
        int value;
        struct sony_nc_value *item =
            container_of(attr, struct sony_nc_value, devattr);

        if (!*item->acpiget)
                return -EIO;

        if (acpi_callgetfunc(sony_nc_acpi_handle, *item->acpiget, &value) < 0)
                return -EIO;

        if (item->validate)
                value = item->validate(SNC_VALIDATE_OUT, value);

        return snprintf(buffer, PAGE_SIZE, "%d\n", value);
}

static ssize_t sony_nc_sysfs_store(struct device *dev,
                               struct device_attribute *attr,
                               const char *buffer, size_t count)
{
        int value;
        struct sony_nc_value *item =
            container_of(attr, struct sony_nc_value, devattr);

        if (!item->acpiset)
                return -EIO;

        if (count > 31)
                return -EINVAL;

        value = simple_strtoul(buffer, NULL, 10);

        if (item->validate)
                value = item->validate(SNC_VALIDATE_IN, value);

        if (value < 0)
                return value;

        if (acpi_callsetfunc(sony_nc_acpi_handle, *item->acpiset, value, NULL) < 0)
                return -EIO;
        item->value = value;
        item->valid = 1;
        return count;
}


/*
 * Backlight device
 */
static int sony_backlight_update_status(struct backlight_device *bd)
{
        return acpi_callsetfunc(sony_nc_acpi_handle, "SBRT",
                                bd->props.brightness + 1, NULL);
}

static int sony_backlight_get_brightness(struct backlight_device *bd)
{
        int value;

        if (acpi_callgetfunc(sony_nc_acpi_handle, "GBRT", &value))
                return 0;
        /* brightness levels are 1-based, while backlight ones are 0-based */
        return value - 1;
}

static struct backlight_device *sony_backlight_device;
static struct backlight_ops sony_backlight_ops = {
        .update_status = sony_backlight_update_status,
        .get_brightness = sony_backlight_get_brightness,
};

/*
 * ACPI callbacks
 */
static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
{
        dprintk("sony_acpi_notify, event: %d\n", event);
        sony_laptop_report_input_event(event);
        acpi_bus_generate_event(sony_nc_acpi_device, 1, event);
}

static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
                                      void *context, void **return_value)
{
        struct acpi_namespace_node *node;
        union acpi_operand_object *operand;

        node = (struct acpi_namespace_node *)handle;
        operand = (union acpi_operand_object *)node->object;

        printk(KERN_WARNING DRV_PFX "method: name: %4.4s, args %X\n", node->name.ascii,
               (u32) operand->method.param_count);

        return AE_OK;
}

/*
 * ACPI device
 */
static int sony_nc_resume(struct acpi_device *device)
{
        struct sony_nc_value *item;

        for (item = sony_nc_values; item->name; item++) {
                int ret;

                if (!item->valid)
                        continue;
                ret = acpi_callsetfunc(sony_nc_acpi_handle, *item->acpiset,
                                       item->value, NULL);
                if (ret < 0) {
                        printk("%s: %d\n", __FUNCTION__, ret);
                        break;
                }
        }
        return 0;
}

static int sony_nc_add(struct acpi_device *device)
{
        acpi_status status;
        int result = 0;
        acpi_handle handle;
        struct sony_nc_value *item;

        printk(KERN_INFO DRV_PFX "%s v%s.\n",
                SONY_NC_DRIVER_NAME, SONY_LAPTOP_DRIVER_VERSION);

        sony_nc_acpi_device = device;
        strcpy(acpi_device_class(device), "sony/hotkey");

        sony_nc_acpi_handle = device->handle;

        if (debug) {
                status = acpi_walk_namespace(ACPI_TYPE_METHOD, sony_nc_acpi_handle,
                                             1, sony_walk_callback, NULL, NULL);
                if (ACPI_FAILURE(status)) {
                        printk(KERN_WARNING DRV_PFX "unable to walk acpi resources\n");
                        result = -ENODEV;
                        goto outwalk;
                }
        }

        /* setup input devices and helper fifo */
        result = sony_laptop_setup_input();
        if (result) {
                printk(KERN_ERR DRV_PFX
                                "Unabe to create input devices.\n");
                goto outwalk;
        }

        status = acpi_install_notify_handler(sony_nc_acpi_handle,
                                             ACPI_DEVICE_NOTIFY,
                                             sony_acpi_notify, NULL);
        if (ACPI_FAILURE(status)) {
                printk(KERN_WARNING DRV_PFX "unable to install notify handler\n");
                result = -ENODEV;
                goto outinput;
        }

        if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT", &handle))) {
                sony_backlight_device = backlight_device_register("sony", NULL,
                                                                  NULL,
                                                                  &sony_backlight_ops);

                if (IS_ERR(sony_backlight_device)) {
                        printk(KERN_WARNING DRV_PFX "unable to register backlight device\n");
                        sony_backlight_device = NULL;
                } else {
                        sony_backlight_device->props.brightness =
                            sony_backlight_get_brightness
                            (sony_backlight_device);
                        sony_backlight_device->props.max_brightness = 
                            SONY_MAX_BRIGHTNESS - 1;
                }

        }

        result = sony_pf_add();
        if (result)
                goto outbacklight;

        /* create sony_pf sysfs attributes related to the SNC device */
        for (item = sony_nc_values; item->name; ++item) {

                if (!debug && item->debug)
                        continue;

                /* find the available acpiget as described in the DSDT */
                for (; item->acpiget && *item->acpiget; ++item->acpiget) {
                        if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle,
                                                         *item->acpiget,
                                                         &handle))) {
                                dprintk("Found %s getter: %s\n",
                                                item->name, *item->acpiget);
                                item->devattr.attr.mode |= S_IRUGO;
                                break;
                        }
                }

                /* find the available acpiset as described in the DSDT */
                for (; item->acpiset && *item->acpiset; ++item->acpiset) {
                        if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle,
                                                         *item->acpiset,
                                                         &handle))) {
                                dprintk("Found %s setter: %s\n",
                                                item->name, *item->acpiset);
                                item->devattr.attr.mode |= S_IWUSR;
                                break;
                        }
                }

                if (item->devattr.attr.mode != 0) {
                        result =
                            device_create_file(&sony_pf_device->dev,
                                               &item->devattr);
                        if (result)
                                goto out_sysfs;
                }
        }

        return 0;

      out_sysfs:
        for (item = sony_nc_values; item->name; ++item) {
                device_remove_file(&sony_pf_device->dev, &item->devattr);
        }
        sony_pf_remove();

      outbacklight:
        if (sony_backlight_device)
                backlight_device_unregister(sony_backlight_device);

        status = acpi_remove_notify_handler(sony_nc_acpi_handle,
                                            ACPI_DEVICE_NOTIFY,
                                            sony_acpi_notify);
        if (ACPI_FAILURE(status))
                printk(KERN_WARNING DRV_PFX "unable to remove notify handler\n");

      outinput:
        sony_laptop_remove_input();

      outwalk:
        return result;
}

static int sony_nc_remove(struct acpi_device *device, int type)
{
        acpi_status status;
        struct sony_nc_value *item;

        if (sony_backlight_device)
                backlight_device_unregister(sony_backlight_device);

        sony_nc_acpi_device = NULL;

        status = acpi_remove_notify_handler(sony_nc_acpi_handle,
                                            ACPI_DEVICE_NOTIFY,
                                            sony_acpi_notify);
        if (ACPI_FAILURE(status))
                printk(KERN_WARNING DRV_PFX "unable to remove notify handler\n");

        for (item = sony_nc_values; item->name; ++item) {
                device_remove_file(&sony_pf_device->dev, &item->devattr);
        }

        sony_pf_remove();
        sony_laptop_remove_input();
        dprintk(SONY_NC_DRIVER_NAME " removed.\n");

        return 0;
}

static struct acpi_driver sony_nc_driver = {
        .name = SONY_NC_DRIVER_NAME,
        .class = SONY_NC_CLASS,
        .ids = SONY_NC_HID,
        .owner = THIS_MODULE,
        .ops = {
                .add = sony_nc_add,
                .remove = sony_nc_remove,
                .resume = sony_nc_resume,
                },
};

/*********** SPIC (SNY6001) Device ***********/

#define SONYPI_DEVICE_TYPE1     0x00000001
#define SONYPI_DEVICE_TYPE2     0x00000002
#define SONYPI_DEVICE_TYPE3     0x00000004

#define SONY_PIC_EV_MASK        0xff

struct sony_pic_ioport {
        struct acpi_resource_io io;
        struct list_head        list;
};

struct sony_pic_irq {
        struct acpi_resource_irq        irq;
        struct list_head                list;
};

struct sony_pic_dev {
        int                     model;
        u8                      camera_power;
        u8                      bluetooth_power;
        struct acpi_device      *acpi_dev;
        struct sony_pic_irq     *cur_irq;
        struct sony_pic_ioport  *cur_ioport;
        struct list_head        interrupts;
        struct list_head        ioports;
};

static struct sony_pic_dev spic_dev = {
        .interrupts     = LIST_HEAD_INIT(spic_dev.interrupts),
        .ioports        = LIST_HEAD_INIT(spic_dev.ioports),
};

/* Event masks */
#define SONYPI_JOGGER_MASK                      0x00000001
#define SONYPI_CAPTURE_MASK                     0x00000002
#define SONYPI_FNKEY_MASK                       0x00000004
#define SONYPI_BLUETOOTH_MASK                   0x00000008
#define SONYPI_PKEY_MASK                        0x00000010
#define SONYPI_BACK_MASK                        0x00000020
#define SONYPI_HELP_MASK                        0x00000040
#define SONYPI_LID_MASK                         0x00000080
#define SONYPI_ZOOM_MASK                        0x00000100
#define SONYPI_THUMBPHRASE_MASK                 0x00000200
#define SONYPI_MEYE_MASK                        0x00000400
#define SONYPI_MEMORYSTICK_MASK                 0x00000800
#define SONYPI_BATTERY_MASK                     0x00001000
#define SONYPI_WIRELESS_MASK                    0x00002000

struct sonypi_event {
        u8      data;
        u8      event;
};

/* The set of possible button release events */
static struct sonypi_event sonypi_releaseev[] = {
        { 0x00, SONYPI_EVENT_ANYBUTTON_RELEASED },
        { 0, 0 }
};

/* The set of possible jogger events  */
static struct sonypi_event sonypi_joggerev[] = {
        { 0x1f, SONYPI_EVENT_JOGDIAL_UP },
        { 0x01, SONYPI_EVENT_JOGDIAL_DOWN },
        { 0x5f, SONYPI_EVENT_JOGDIAL_UP_PRESSED },
        { 0x41, SONYPI_EVENT_JOGDIAL_DOWN_PRESSED },
        { 0x1e, SONYPI_EVENT_JOGDIAL_FAST_UP },
        { 0x02, SONYPI_EVENT_JOGDIAL_FAST_DOWN },
        { 0x5e, SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED },
        { 0x42, SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED },
        { 0x1d, SONYPI_EVENT_JOGDIAL_VFAST_UP },
        { 0x03, SONYPI_EVENT_JOGDIAL_VFAST_DOWN },
        { 0x5d, SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED },
        { 0x43, SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED },
        { 0x40, SONYPI_EVENT_JOGDIAL_PRESSED },
        { 0, 0 }
};

/* The set of possible capture button events */
static struct sonypi_event sonypi_captureev[] = {
        { 0x05, SONYPI_EVENT_CAPTURE_PARTIALPRESSED },
        { 0x07, SONYPI_EVENT_CAPTURE_PRESSED },
        { 0x01, SONYPI_EVENT_CAPTURE_PARTIALRELEASED },
        { 0, 0 }
};

/* The set of possible fnkeys events */
static struct sonypi_event sonypi_fnkeyev[] = {
        { 0x10, SONYPI_EVENT_FNKEY_ESC },
        { 0x11, SONYPI_EVENT_FNKEY_F1 },
        { 0x12, SONYPI_EVENT_FNKEY_F2 },
        { 0x13, SONYPI_EVENT_FNKEY_F3 },
        { 0x14, SONYPI_EVENT_FNKEY_F4 },
        { 0x15, SONYPI_EVENT_FNKEY_F5 },
        { 0x16, SONYPI_EVENT_FNKEY_F6 },
        { 0x17, SONYPI_EVENT_FNKEY_F7 },
        { 0x18, SONYPI_EVENT_FNKEY_F8 },
        { 0x19, SONYPI_EVENT_FNKEY_F9 },
        { 0x1a, SONYPI_EVENT_FNKEY_F10 },
        { 0x1b, SONYPI_EVENT_FNKEY_F11 },
        { 0x1c, SONYPI_EVENT_FNKEY_F12 },
        { 0x1f, SONYPI_EVENT_FNKEY_RELEASED },
        { 0x21, SONYPI_EVENT_FNKEY_1 },
        { 0x22, SONYPI_EVENT_FNKEY_2 },
        { 0x31, SONYPI_EVENT_FNKEY_D },
        { 0x32, SONYPI_EVENT_FNKEY_E },
        { 0x33, SONYPI_EVENT_FNKEY_F },
        { 0x34, SONYPI_EVENT_FNKEY_S },
        { 0x35, SONYPI_EVENT_FNKEY_B },
        { 0x36, SONYPI_EVENT_FNKEY_ONLY },
        { 0, 0 }
};

/* The set of possible program key events */
static struct sonypi_event sonypi_pkeyev[] = {
        { 0x01, SONYPI_EVENT_PKEY_P1 },
        { 0x02, SONYPI_EVENT_PKEY_P2 },
        { 0x04, SONYPI_EVENT_PKEY_P3 },
        { 0x5c, SONYPI_EVENT_PKEY_P1 },
        { 0, 0 }
};

/* The set of possible bluetooth events */
static struct sonypi_event sonypi_blueev[] = {
        { 0x55, SONYPI_EVENT_BLUETOOTH_PRESSED },
        { 0x59, SONYPI_EVENT_BLUETOOTH_ON },
        { 0x5a, SONYPI_EVENT_BLUETOOTH_OFF },
        { 0, 0 }
};

/* The set of possible wireless events */
static struct sonypi_event sonypi_wlessev[] = {
        { 0x59, SONYPI_EVENT_WIRELESS_ON },
        { 0x5a, SONYPI_EVENT_WIRELESS_OFF },
        { 0, 0 }
};

/* The set of possible back button events */
static struct sonypi_event sonypi_backev[] = {
        { 0x20, SONYPI_EVENT_BACK_PRESSED },
        { 0, 0 }
};

/* The set of possible help button events */
static struct sonypi_event sonypi_helpev[] = {
        { 0x3b, SONYPI_EVENT_HELP_PRESSED },
        { 0, 0 }
};


/* The set of possible lid events */
static struct sonypi_event sonypi_lidev[] = {
        { 0x51, SONYPI_EVENT_LID_CLOSED },
        { 0x50, SONYPI_EVENT_LID_OPENED },
        { 0, 0 }
};

/* The set of possible zoom events */
static struct sonypi_event sonypi_zoomev[] = {
        { 0x39, SONYPI_EVENT_ZOOM_PRESSED },
        { 0, 0 }
};

/* The set of possible thumbphrase events */
static struct sonypi_event sonypi_thumbphraseev[] = {
        { 0x3a, SONYPI_EVENT_THUMBPHRASE_PRESSED },
        { 0, 0 }
};

/* The set of possible motioneye camera events */
static struct sonypi_event sonypi_meyeev[] = {
        { 0x00, SONYPI_EVENT_MEYE_FACE },
        { 0x01, SONYPI_EVENT_MEYE_OPPOSITE },
        { 0, 0 }
};

/* The set of possible memorystick events */
static struct sonypi_event sonypi_memorystickev[] = {
        { 0x53, SONYPI_EVENT_MEMORYSTICK_INSERT },
        { 0x54, SONYPI_EVENT_MEMORYSTICK_EJECT },
        { 0, 0 }
};

/* The set of possible battery events */
static struct sonypi_event sonypi_batteryev[] = {
        { 0x20, SONYPI_EVENT_BATTERY_INSERT },
        { 0x30, SONYPI_EVENT_BATTERY_REMOVE },
        { 0, 0 }
};

static struct sonypi_eventtypes {
        int                     model;
        u8                      data;
        unsigned long           mask;
        struct sonypi_event *   events;
} sony_pic_eventtypes[] = {
        { SONYPI_DEVICE_TYPE1, 0, 0xffffffff, sonypi_releaseev },
        { SONYPI_DEVICE_TYPE1, 0x70, SONYPI_MEYE_MASK, sonypi_meyeev },
        { SONYPI_DEVICE_TYPE1, 0x30, SONYPI_LID_MASK, sonypi_lidev },
        { SONYPI_DEVICE_TYPE1, 0x60, SONYPI_CAPTURE_MASK, sonypi_captureev },
        { SONYPI_DEVICE_TYPE1, 0x10, SONYPI_JOGGER_MASK, sonypi_joggerev },
        { SONYPI_DEVICE_TYPE1, 0x20, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
        { SONYPI_DEVICE_TYPE1, 0x30, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
        { SONYPI_DEVICE_TYPE1, 0x40, SONYPI_PKEY_MASK, sonypi_pkeyev },
        { SONYPI_DEVICE_TYPE1, 0x30, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
        { SONYPI_DEVICE_TYPE1, 0x40, SONYPI_BATTERY_MASK, sonypi_batteryev },

        { SONYPI_DEVICE_TYPE2, 0, 0xffffffff, sonypi_releaseev },
        { SONYPI_DEVICE_TYPE2, 0x38, SONYPI_LID_MASK, sonypi_lidev },
        { SONYPI_DEVICE_TYPE2, 0x11, SONYPI_JOGGER_MASK, sonypi_joggerev },
        { SONYPI_DEVICE_TYPE2, 0x61, SONYPI_CAPTURE_MASK, sonypi_captureev },
        { SONYPI_DEVICE_TYPE2, 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
        { SONYPI_DEVICE_TYPE2, 0x31, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
        { SONYPI_DEVICE_TYPE2, 0x08, SONYPI_PKEY_MASK, sonypi_pkeyev },
        { SONYPI_DEVICE_TYPE2, 0x11, SONYPI_BACK_MASK, sonypi_backev },
        { SONYPI_DEVICE_TYPE2, 0x21, SONYPI_HELP_MASK, sonypi_helpev },
        { SONYPI_DEVICE_TYPE2, 0x21, SONYPI_ZOOM_MASK, sonypi_zoomev },
        { SONYPI_DEVICE_TYPE2, 0x20, SONYPI_THUMBPHRASE_MASK, sonypi_thumbphraseev },
        { SONYPI_DEVICE_TYPE2, 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
        { SONYPI_DEVICE_TYPE2, 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
        { SONYPI_DEVICE_TYPE2, 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },

        { SONYPI_DEVICE_TYPE3, 0, 0xffffffff, sonypi_releaseev },
        { SONYPI_DEVICE_TYPE3, 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
        { SONYPI_DEVICE_TYPE3, 0x31, SONYPI_WIRELESS_MASK, sonypi_wlessev },
        { SONYPI_DEVICE_TYPE3, 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
        { SONYPI_DEVICE_TYPE3, 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
        { SONYPI_DEVICE_TYPE3, 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
        { 0 }
};

static int sony_pic_detect_device_type(void)
{
        struct pci_dev *pcidev;
        int model = 0;

        if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
                                     PCI_DEVICE_ID_INTEL_82371AB_3, NULL)))
                model = SONYPI_DEVICE_TYPE1;

        else if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
                                          PCI_DEVICE_ID_INTEL_ICH6_1, NULL)))
                model = SONYPI_DEVICE_TYPE3;

        else if ((pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
                                          PCI_DEVICE_ID_INTEL_ICH7_1, NULL)))
                model = SONYPI_DEVICE_TYPE3;

        else
                model = SONYPI_DEVICE_TYPE2;

        if (pcidev)
                pci_dev_put(pcidev);

        printk(KERN_INFO DRV_PFX "detected Type%d model\n",
                        model == SONYPI_DEVICE_TYPE1 ? 1 :
                        model == SONYPI_DEVICE_TYPE2 ? 2 : 3);
        return model;
}

#define ITERATIONS_LONG         10000
#define ITERATIONS_SHORT        10
#define wait_on_command(command, iterations) {                          \
        unsigned int n = iterations;                                    \
        while (--n && (command))                                        \
                udelay(1);                                              \
        if (!n)                                                         \
                dprintk("command failed at %s : %s (line %d)\n",        \
                                __FILE__, __FUNCTION__, __LINE__);      \
}

static u8 sony_pic_call1(u8 dev)
{
        u8 v1, v2;

        wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2,
                        ITERATIONS_LONG);
        outb(dev, spic_dev.cur_ioport->io.minimum + 4);
        v1 = inb_p(spic_dev.cur_ioport->io.minimum + 4);
        v2 = inb_p(spic_dev.cur_ioport->io.minimum);
        dprintk("sony_pic_call1: 0x%.4x\n", (v2 << 8) | v1);
        return v2;
}

static u8 sony_pic_call2(u8 dev, u8 fn)
{
        u8 v1;

        wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2,
                        ITERATIONS_LONG);
        outb(dev, spic_dev.cur_ioport->io.minimum + 4);
        wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2,
                        ITERATIONS_LONG);
        outb(fn, spic_dev.cur_ioport->io.minimum);
        v1 = inb_p(spic_dev.cur_ioport->io.minimum);
        dprintk("sony_pic_call2: 0x%.4x\n", v1);
        return v1;
}

static u8 sony_pic_call3(u8 dev, u8 fn, u8 v)
{
        u8 v1;

        wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2, ITERATIONS_LONG);
        outb(dev, spic_dev.cur_ioport->io.minimum + 4);
        wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2, ITERATIONS_LONG);
        outb(fn, spic_dev.cur_ioport->io.minimum);
        wait_on_command(inb_p(spic_dev.cur_ioport->io.minimum + 4) & 2, ITERATIONS_LONG);
        outb(v, spic_dev.cur_ioport->io.minimum);
        v1 = inb_p(spic_dev.cur_ioport->io.minimum);
        dprintk("sony_pic_call3: 0x%.4x\n", v1);
        return v1;
}

/* camera tests and poweron/poweroff */
#define SONYPI_CAMERA_PICTURE           5
#define SONYPI_CAMERA_MUTE_MASK         0x40
#define SONYPI_CAMERA_CONTROL           0x10
#define SONYPI_CAMERA_STATUS            7
#define SONYPI_CAMERA_STATUS_READY      0x2
#define SONYPI_CAMERA_STATUS_POSITION   0x4

static int sony_pic_camera_ready(void)
{
        u8 v;

        v = sony_pic_call2(0x8f, SONYPI_CAMERA_STATUS);
        return (v != 0xff && (v & SONYPI_CAMERA_STATUS_READY));
}

static void sony_pic_camera_off(void)
{
        wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE,
                                SONYPI_CAMERA_MUTE_MASK),
                        ITERATIONS_SHORT);

        if (!spic_dev.camera_power)
                return;

        sony_pic_call2(0x91, 0);
        spic_dev.camera_power = 0;
}

static void sony_pic_camera_on(void)
{
        int i, j;

        if (spic_dev.camera_power)
                return;

        for (j = 5; j > 0; j--) {

                while (sony_pic_call2(0x91, 0x1))
                        msleep(10);
                sony_pic_call1(0x93);

                for (i = 400; i > 0; i--) {
                        if (sony_pic_camera_ready())
                                break;
                        msleep(10);
                }
                if (i)
                        break;
        }

        if (j == 0) {
                printk(KERN_WARNING "sonypi: failed to power on camera\n");
                return;
        }

        wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTROL,
                                0x5a),
                        ITERATIONS_SHORT);

        spic_dev.camera_power = 1;
}

static ssize_t sony_pic_camerapower_store(struct device *dev,
                struct device_attribute *attr,
                const char *buffer, size_t count)
{
        unsigned long value;
        if (count > 31)
                return -EINVAL;

        value = simple_strtoul(buffer, NULL, 10);
        if (value)
                sony_pic_camera_on();
        else
                sony_pic_camera_off();

        return count;
}

static ssize_t sony_pic_camerapower_show(struct device *dev,
                struct device_attribute *attr, char *buffer)
{
        return snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.camera_power);
}

/* bluetooth subsystem power state */
static void sony_pic_set_bluetoothpower(u8 state)
{
        state = !!state;
        if (spic_dev.bluetooth_power == state)
                return;
        sony_pic_call2(0x96, state);
        sony_pic_call1(0x82);
        spic_dev.bluetooth_power = state;
}

static ssize_t sony_pic_bluetoothpower_store(struct device *dev,
                struct device_attribute *attr,
                const char *buffer, size_t count)
{
        unsigned long value;
        if (count > 31)
                return -EINVAL;

        value = simple_strtoul(buffer, NULL, 10);
        sony_pic_set_bluetoothpower(value);

        return count;
}

static ssize_t sony_pic_bluetoothpower_show(struct device *dev,
                struct device_attribute *attr, char *buffer)
{
        return snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.bluetooth_power);
}

/* fan speed */
/* FAN0 information (reverse engineered from ACPI tables) */
#define SONY_PIC_FAN0_STATUS    0x93
static int sony_pic_set_fanspeed(unsigned long value)
{
        return ec_write(SONY_PIC_FAN0_STATUS, value);
}

static int sony_pic_get_fanspeed(u8 *value)
{
        return ec_read(SONY_PIC_FAN0_STATUS, value);
}

static ssize_t sony_pic_fanspeed_store(struct device *dev,
                struct device_attribute *attr,
                const char *buffer, size_t count)
{
        unsigned long value;
        if (count > 31)
                return -EINVAL;

        value = simple_strtoul(buffer, NULL, 10);
        if (sony_pic_set_fanspeed(value))
                return -EIO;

        return count;
}

static ssize_t sony_pic_fanspeed_show(struct device *dev,
                struct device_attribute *attr, char *buffer)
{
        u8 value = 0;
        if (sony_pic_get_fanspeed(&value))
                return -EIO;

        return snprintf(buffer, PAGE_SIZE, "%d\n", value);
}

#define SPIC_ATTR(_name, _mode)                                 \
struct device_attribute spic_attr_##_name = __ATTR(_name,       \
                _mode, sony_pic_## _name ##_show,               \
                sony_pic_## _name ##_store)

static SPIC_ATTR(camerapower, 0644);
static SPIC_ATTR(bluetoothpower, 0644);
static SPIC_ATTR(fanspeed, 0644);

static struct attribute *spic_attributes[] = {
        &spic_attr_camerapower.attr,
        &spic_attr_bluetoothpower.attr,
        &spic_attr_fanspeed.attr,
        NULL
};

static struct attribute_group spic_attribute_group = {
        .attrs = spic_attributes
};

/******** SONYPI compatibility **********/
#ifdef CONFIG_SONY_LAPTOP_OLD

/* battery / brightness / temperature  addresses */
#define SONYPI_BAT_FLAGS        0x81
#define SONYPI_LCD_LIGHT        0x96
#define SONYPI_BAT1_PCTRM       0xa0
#define SONYPI_BAT1_LEFT        0xa2
#define SONYPI_BAT1_MAXRT       0xa4
#define SONYPI_BAT2_PCTRM       0xa8
#define SONYPI_BAT2_LEFT        0xaa
#define SONYPI_BAT2_MAXRT       0xac
#define SONYPI_BAT1_MAXTK       0xb0
#define SONYPI_BAT1_FULL        0xb2
#define SONYPI_BAT2_MAXTK       0xb8
#define SONYPI_BAT2_FULL        0xba
#define SONYPI_TEMP_STATUS      0xC1

struct sonypi_compat_s {
        struct fasync_struct    *fifo_async;
        struct kfifo            *fifo;
        spinlock_t              fifo_lock;
        wait_queue_head_t       fifo_proc_list;
        atomic_t                open_count;
};
static struct sonypi_compat_s sonypi_compat = {
        .open_count = ATOMIC_INIT(0),
};

static int sonypi_misc_fasync(int fd, struct file *filp, int on)
{
        int retval;

        retval = fasync_helper(fd, filp, on, &sonypi_compat.fifo_async);
        if (retval < 0)
                return retval;
        return 0;
}

static int sonypi_misc_release(struct inode *inode, struct file *file)
{
        sonypi_misc_fasync(-1, file, 0);
        atomic_dec(&sonypi_compat.open_count);
        return 0;
}

static int sonypi_misc_open(struct inode *inode, struct file *file)
{
        /* Flush input queue on first open */
        if (atomic_inc_return(&sonypi_compat.open_count) == 1)
                kfifo_reset(sonypi_compat.fifo);
        return 0;
}

static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
                                size_t count, loff_t *pos)
{
        ssize_t ret;
        unsigned char c;

        if ((kfifo_len(sonypi_compat.fifo) == 0) &&
            (file->f_flags & O_NONBLOCK))
                return -EAGAIN;

        ret = wait_event_interruptible(sonypi_compat.fifo_proc_list,
                                       kfifo_len(sonypi_compat.fifo) != 0);
        if (ret)
                return ret;

        while (ret < count &&
               (kfifo_get(sonypi_compat.fifo, &c, sizeof(c)) == sizeof(c))) {
                if (put_user(c, buf++))
                        return -EFAULT;
                ret++;
        }

        if (ret > 0) {
                struct inode *inode = file->f_path.dentry->d_inode;
                inode->i_atime = current_fs_time(inode->i_sb);
        }

        return ret;
}

static unsigned int sonypi_misc_poll(struct file *file, poll_table *wait)
{
        poll_wait(file, &sonypi_compat.fifo_proc_list, wait);
        if (kfifo_len(sonypi_compat.fifo))
                return POLLIN | POLLRDNORM;
        return 0;
}

static int ec_read16(u8 addr, u16 *value)
{
        u8 val_lb, val_hb;
        if (ec_read(addr, &val_lb))
                return -1;
        if (ec_read(addr + 1, &val_hb))
                return -1;
        *value = val_lb | (val_hb << 8);
        return 0;
}

static int sonypi_misc_ioctl(struct inode *ip, struct file *fp,
                             unsigned int cmd, unsigned long arg)
{
        int ret = 0;
        void __user *argp = (void __user *)arg;
        u8 val8;
        u16 val16;
        int value;

        /*down(&sonypi_device.lock);*/
        switch (cmd) {
        case SONYPI_IOCGBRT:
                if (sony_backlight_device == NULL) {
                        ret = -EIO;
                        break;
                }
                if (acpi_callgetfunc(sony_nc_acpi_handle, "GBRT", &value)) {
                        ret = -EIO;
                        break;
                }
                val8 = ((value & 0xff) - 1) << 5;
                if (copy_to_user(argp, &val8, sizeof(val8)))
                                ret = -EFAULT;
                break;
        case SONYPI_IOCSBRT:
                if (sony_backlight_device == NULL) {
                        ret = -EIO;
                        break;
                }
                if (copy_from_user(&val8, argp, sizeof(val8))) {
                        ret = -EFAULT;
                        break;
                }
                if (acpi_callsetfunc(sony_nc_acpi_handle, "SBRT",
                                (val8 >> 5) + 1, NULL)) {
                        ret = -EIO;
                        break;
                }
                /* sync the backlight device status */
                sony_backlight_device->props.brightness =
                    sony_backlight_get_brightness(sony_backlight_device);
                break;
        case SONYPI_IOCGBAT1CAP:
                if (ec_read16(SONYPI_BAT1_FULL, &val16)) {
                        ret = -EIO;
                        break;
                }
                if (copy_to_user(argp, &val16, sizeof(val16)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCGBAT1REM:
                if (ec_read16(SONYPI_BAT1_LEFT, &val16)) {
                        ret = -EIO;
                        break;
                }
                if (copy_to_user(argp, &val16, sizeof(val16)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCGBAT2CAP:
                if (ec_read16(SONYPI_BAT2_FULL, &val16)) {
                        ret = -EIO;
                        break;
                }
                if (copy_to_user(argp, &val16, sizeof(val16)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCGBAT2REM:
                if (ec_read16(SONYPI_BAT2_LEFT, &val16)) {
                        ret = -EIO;
                        break;
                }
                if (copy_to_user(argp, &val16, sizeof(val16)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCGBATFLAGS:
                if (ec_read(SONYPI_BAT_FLAGS, &val8)) {
                        ret = -EIO;
                        break;
                }
                val8 &= 0x07;
                if (copy_to_user(argp, &val8, sizeof(val8)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCGBLUE:
                val8 = spic_dev.bluetooth_power;
                if (copy_to_user(argp, &val8, sizeof(val8)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCSBLUE:
                if (copy_from_user(&val8, argp, sizeof(val8))) {
                        ret = -EFAULT;
                        break;
                }
                sony_pic_set_bluetoothpower(val8);
                break;
        /* FAN Controls */
        case SONYPI_IOCGFAN:
                if (sony_pic_get_fanspeed(&val8)) {
                        ret = -EIO;
                        break;
                }
                if (copy_to_user(argp, &val8, sizeof(val8)))
                        ret = -EFAULT;
                break;
        case SONYPI_IOCSFAN:
                if (copy_from_user(&val8, argp, sizeof(val8))) {
                        ret = -EFAULT;
                        break;
                }
                if (sony_pic_set_fanspeed(val8))
                        ret = -EIO;
                break;
        /* GET Temperature (useful under APM) */
        case SONYPI_IOCGTEMP:
                if (ec_read(SONYPI_TEMP_STATUS, &val8)) {
                        ret = -EIO;
                        break;
                }
                if (copy_to_user(argp, &val8, sizeof(val8)))
                        ret = -EFAULT;
                break;
        default:
                ret = -EINVAL;
        }
        /*up(&sonypi_device.lock);*/
        return ret;
}

static const struct file_operations sonypi_misc_fops = {
        .owner          = THIS_MODULE,
        .read           = sonypi_misc_read,
        .poll           = sonypi_misc_poll,
        .open           = sonypi_misc_open,
        .release        = sonypi_misc_release,
        .fasync         = sonypi_misc_fasync,
        .ioctl          = sonypi_misc_ioctl,
};

static struct miscdevice sonypi_misc_device = {
        .minor          = MISC_DYNAMIC_MINOR,
        .name           = "sonypi",
        .fops           = &sonypi_misc_fops,
};

static void sonypi_compat_report_event(u8 event)
{
        kfifo_put(sonypi_compat.fifo, (unsigned char *)&event, sizeof(event));
        kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
        wake_up_interruptible(&sonypi_compat.fifo_proc_list);
}

static int sonypi_compat_init(void)
{
        int error;

        spin_lock_init(&sonypi_compat.fifo_lock);
        sonypi_compat.fifo = kfifo_alloc(SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
                                         &sonypi_compat.fifo_lock);
        if (IS_ERR(sonypi_compat.fifo)) {
                printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
                return PTR_ERR(sonypi_compat.fifo);
        }

        init_waitqueue_head(&sonypi_compat.fifo_proc_list);
        /*init_MUTEX(&sonypi_device.lock);*/

        if (minor != -1)
                sonypi_misc_device.minor = minor;
        error = misc_register(&sonypi_misc_device);
        if (error) {
                printk(KERN_ERR DRV_PFX "misc_register failed\n");
                goto err_free_kfifo;
        }
        if (minor == -1)
                printk(KERN_INFO "sonypi: device allocated minor is %d\n",
                       sonypi_misc_device.minor);

        return 0;

err_free_kfifo:
        kfifo_free(sonypi_compat.fifo);
        return error;
}

static void sonypi_compat_exit(void)
{
        misc_deregister(&sonypi_misc_device);
        kfifo_free(sonypi_compat.fifo);
}
#else
static int sonypi_compat_init(void) { return 0; }
static void sonypi_compat_exit(void) { }
static void sonypi_compat_report_event(u8 event) { }
#endif /* CONFIG_SONY_LAPTOP_OLD */

/*
 * ACPI callbacks
 */
static acpi_status
sony_pic_read_possible_resource(struct acpi_resource *resource, void *context)
{
        u32 i;
        struct sony_pic_dev *dev = (struct sony_pic_dev *)context;

        switch (resource->type) {
        case ACPI_RESOURCE_TYPE_START_DEPENDENT:
        case ACPI_RESOURCE_TYPE_END_DEPENDENT:
                return AE_OK;

        case ACPI_RESOURCE_TYPE_IRQ:
                {
                        struct acpi_resource_irq *p = &resource->data.irq;
                        struct sony_pic_irq *interrupt = NULL;
                        if (!p || !p->interrupt_count) {
                                /*
                                 * IRQ descriptors may have no IRQ# bits set,
                                 * particularly those those w/ _STA disabled
                                 */
                                dprintk("Blank IRQ resource\n");
                                return AE_OK;
                        }
                        for (i = 0; i < p->interrupt_count; i++) {
                                if (!p->interrupts[i]) {
                                        printk(KERN_WARNING DRV_PFX
                                                        "Invalid IRQ %d\n",
                                                        p->interrupts[i]);
                                        continue;
                                }
                                interrupt = kzalloc(sizeof(*interrupt),
                                                GFP_KERNEL);
                                if (!interrupt)
                                        return AE_ERROR;

                                list_add(&interrupt->list, &dev->interrupts);
                                interrupt->irq.triggering = p->triggering;
                                interrupt->irq.polarity = p->polarity;
                                interrupt->irq.sharable = p->sharable;
                                interrupt->irq.interrupt_count = 1;
                                interrupt->irq.interrupts[0] = p->interrupts[i];
                        }
                        return AE_OK;
                }
        case ACPI_RESOURCE_TYPE_IO:
                {
                        struct acpi_resource_io *io = &resource->data.io;
                        struct sony_pic_ioport *ioport = NULL;
                        if (!io) {
                                dprintk("Blank IO resource\n");
                                return AE_OK;
                        }

                        ioport = kzalloc(sizeof(*ioport), GFP_KERNEL);
                        if (!ioport)
                                return AE_ERROR;

                        list_add(&ioport->list, &dev->ioports);
                        memcpy(&ioport->io, io, sizeof(*io));
                        return AE_OK;
                }
        default:
                dprintk("Resource %d isn't an IRQ nor an IO port\n",
                                resource->type);

        case ACPI_RESOURCE_TYPE_END_TAG:
                return AE_OK;
        }
        return AE_CTRL_TERMINATE;
}

static int sony_pic_possible_resources(struct acpi_device *device)
{
        int result = 0;
        acpi_status status = AE_OK;

        if (!device)
                return -EINVAL;

        /* get device status */
        /* see acpi_pci_link_get_current acpi_pci_link_get_possible */
        dprintk("Evaluating _STA\n");
        result = acpi_bus_get_status(device);
        if (result) {
                printk(KERN_WARNING DRV_PFX "Unable to read status\n");
                goto end;
        }

        if (!device->status.enabled)
                dprintk("Device disabled\n");
        else
                dprintk("Device enabled\n");

        /*
         * Query and parse 'method'
         */
        dprintk("Evaluating %s\n", METHOD_NAME__PRS);
        status = acpi_walk_resources(device->handle, METHOD_NAME__PRS,
                        sony_pic_read_possible_resource, &spic_dev);
        if (ACPI_FAILURE(status)) {
                printk(KERN_WARNING DRV_PFX
                                "Failure evaluating %s\n",
                                METHOD_NAME__PRS);
                result = -ENODEV;
        }
end:
        return result;
}

/*
 *  Disable the spic device by calling its _DIS method
 */
static int sony_pic_disable(struct acpi_device *device)
{
        if (ACPI_FAILURE(acpi_evaluate_object(device->handle, "_DIS", 0, NULL)))
                return -ENXIO;

        dprintk("Device disabled\n");
        return 0;
}


/*
 *  Based on drivers/acpi/pci_link.c:acpi_pci_link_set
 *
 *  Call _SRS to set current resources
 */
static int sony_pic_enable(struct acpi_device *device,
                struct sony_pic_ioport *ioport, struct sony_pic_irq *irq)
{
        acpi_status status;
        int result = 0;
        struct {
                struct acpi_resource io_res;
                struct acpi_resource irq_res;
                struct acpi_resource end;
        } *resource;
        struct acpi_buffer buffer = { 0, NULL };

        if (!ioport || !irq)
                return -EINVAL;

        /* init acpi_buffer */
        resource = kzalloc(sizeof(*resource) + 1, GFP_KERNEL);
        if (!resource)
                return -ENOMEM;

        buffer.length = sizeof(*resource) + 1;
        buffer.pointer = resource;

        /* setup io resource */
        resource->io_res.type = ACPI_RESOURCE_TYPE_IO;
        resource->io_res.length = sizeof(struct acpi_resource);
        memcpy(&resource->io_res.data.io, &ioport->io,
                        sizeof(struct acpi_resource_io));

        /* setup irq resource */
        resource->irq_res.type = ACPI_RESOURCE_TYPE_IRQ;
        resource->irq_res.length = sizeof(struct acpi_resource);
        memcpy(&resource->irq_res.data.irq, &irq->irq,
                        sizeof(struct acpi_resource_irq));
        /* we requested a shared irq */
        resource->irq_res.data.irq.sharable = ACPI_SHARED;

        resource->end.type = ACPI_RESOURCE_TYPE_END_TAG;

        /* Attempt to set the resource */
        dprintk("Evaluating _SRS\n");
        status = acpi_set_current_resources(device->handle, &buffer);

        /* check for total failure */
        if (ACPI_FAILURE(status)) {
                printk(KERN_ERR DRV_PFX "Error evaluating _SRS");
                result = -ENODEV;
                goto end;
        }

        /* Necessary device initializations calls (from sonypi) */
        sony_pic_call1(0x82);
        sony_pic_call2(0x81, 0xff);
        sony_pic_call1(compat ? 0x92 : 0x82);

end:
        kfree(resource);
        return result;
}

/*****************
 *
 * ISR: some event is available
 *
 *****************/
static irqreturn_t sony_pic_irq(int irq, void *dev_id)
{
        int i, j;
        u32 port_val = 0;
        u8 ev = 0;
        u8 data_mask = 0;
        u8 device_event = 0;

        struct sony_pic_dev *dev = (struct sony_pic_dev *) dev_id;

        acpi_os_read_port(dev->cur_ioport->io.minimum, &port_val,
                        dev->cur_ioport->io.address_length);
        ev = port_val & SONY_PIC_EV_MASK;
        data_mask = 0xff & (port_val >> (dev->cur_ioport->io.address_length - 8));

        dprintk("event (0x%.8x [%.2x] [%.2x]) at port 0x%.4x\n",
                        port_val, ev, data_mask, dev->cur_ioport->io.minimum);

        if (ev == 0x00 || ev == 0xff)
                return IRQ_HANDLED;

        for (i = 0; sony_pic_eventtypes[i].model; i++) {

                if (spic_dev.model != sony_pic_eventtypes[i].model)
                        continue;

                if ((data_mask & sony_pic_eventtypes[i].data) !=
                    sony_pic_eventtypes[i].data)
                        continue;

                if (!(mask & sony_pic_eventtypes[i].mask))
                        continue;

                for (j = 0; sony_pic_eventtypes[i].events[j].event; j++) {
                        if (ev == sony_pic_eventtypes[i].events[j].data) {
                                device_event =
                                        sony_pic_eventtypes[i].events[j].event;
                                goto found;
                        }
                }
        }
        return IRQ_HANDLED;

found:
        sony_laptop_report_input_event(device_event);
        acpi_bus_generate_event(spic_dev.acpi_dev, 1, device_event);
        sonypi_compat_report_event(device_event);

        return IRQ_HANDLED;
}

/*****************
 *
 *  ACPI driver
 *
 *****************/
static int sony_pic_remove(struct acpi_device *device, int type)
{
        struct sony_pic_ioport *io, *tmp_io;
        struct sony_pic_irq *irq, *tmp_irq;

        sonypi_compat_exit();

        if (sony_pic_disable(device)) {
                printk(KERN_ERR DRV_PFX "Couldn't disable device.\n");
                return -ENXIO;
        }

        free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);
        release_region(spic_dev.cur_ioport->io.minimum,
                        spic_dev.cur_ioport->io.address_length);

        sony_laptop_remove_input();

        /* pf attrs */
        sysfs_remove_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
        sony_pf_remove();

        list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
                list_del(&io->list);
                kfree(io);
        }
        list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
                list_del(&irq->list);
                kfree(irq);
        }
        spic_dev.cur_ioport = NULL;
        spic_dev.cur_irq = NULL;

        dprintk(SONY_PIC_DRIVER_NAME " removed.\n");
        return 0;
}

static int sony_pic_add(struct acpi_device *device)
{
        int result;
        struct sony_pic_ioport *io, *tmp_io;
        struct sony_pic_irq *irq, *tmp_irq;

        printk(KERN_INFO DRV_PFX "%s v%s.\n",
                SONY_PIC_DRIVER_NAME, SONY_LAPTOP_DRIVER_VERSION);

        spic_dev.acpi_dev = device;
        strcpy(acpi_device_class(device), "sony/hotkey");
        spic_dev.model = sony_pic_detect_device_type();

        /* read _PRS resources */
        result = sony_pic_possible_resources(device);
        if (result) {
                printk(KERN_ERR DRV_PFX
                                "Unabe to read possible resources.\n");
                goto err_free_resources;
        }

        /* setup input devices and helper fifo */
        result = sony_laptop_setup_input();
        if (result) {
                printk(KERN_ERR DRV_PFX
                                "Unabe to create input devices.\n");
                goto err_free_resources;
        }

        /* request io port */
        list_for_each_entry(io, &spic_dev.ioports, list) {
                if (request_region(io->io.minimum, io->io.address_length,
                                        "Sony Programable I/O Device")) {
                        dprintk("I/O port: 0x%.4x (0x%.4x) + 0x%.2x\n",
                                        io->io.minimum, io->io.maximum,
                                        io->io.address_length);
                        spic_dev.cur_ioport = io;
                        break;
                }
        }
        if (!spic_dev.cur_ioport) {
                printk(KERN_ERR DRV_PFX "Failed to request_region.\n");
                result = -ENODEV;
                goto err_remove_input;
        }

        /* request IRQ */
        list_for_each_entry(irq, &spic_dev.interrupts, list) {
                if (!request_irq(irq->irq.interrupts[0], sony_pic_irq,
                                        IRQF_SHARED, "sony-laptop", &spic_dev)) {
                        dprintk("IRQ: %d - triggering: %d - "
                                        "polarity: %d - shr: %d\n",
                                        irq->irq.interrupts[0],
                                        irq->irq.triggering,
                                        irq->irq.polarity,
                                        irq->irq.sharable);
                        spic_dev.cur_irq = irq;
                        break;
                }
        }
        if (!spic_dev.cur_irq) {
                printk(KERN_ERR DRV_PFX "Failed to request_irq.\n");
                result = -ENODEV;
                goto err_release_region;
        }

        /* set resource status _SRS */
        result = sony_pic_enable(device, spic_dev.cur_ioport, spic_dev.cur_irq);
        if (result) {
                printk(KERN_ERR DRV_PFX "Couldn't enable device.\n");
                goto err_free_irq;
        }

        spic_dev.bluetooth_power = -1;
        /* create device attributes */
        result = sony_pf_add();
        if (result)
                goto err_disable_device;

        result = sysfs_create_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
        if (result)
                goto err_remove_pf;

        if (sonypi_compat_init())
                goto err_remove_pf;

        return 0;

err_remove_pf:
        sony_pf_remove();

err_disable_device:
        sony_pic_disable(device);

err_free_irq:
        free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);

err_release_region:
        release_region(spic_dev.cur_ioport->io.minimum,
                        spic_dev.cur_ioport->io.address_length);

err_remove_input:
        sony_laptop_remove_input();

err_free_resources:
        list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
                list_del(&io->list);
                kfree(io);
        }
        list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
                list_del(&irq->list);
                kfree(irq);
        }
        spic_dev.cur_ioport = NULL;
        spic_dev.cur_irq = NULL;

        return result;
}

static int sony_pic_suspend(struct acpi_device *device, pm_message_t state)
{
        if (sony_pic_disable(device))
                return -ENXIO;
        return 0;
}

static int sony_pic_resume(struct acpi_device *device)
{
        sony_pic_enable(device, spic_dev.cur_ioport, spic_dev.cur_irq);
        return 0;
}

static struct acpi_driver sony_pic_driver = {
        .name = SONY_PIC_DRIVER_NAME,
        .class = SONY_PIC_CLASS,
        .ids = SONY_PIC_HID,
        .owner = THIS_MODULE,
        .ops = {
                .add = sony_pic_add,
                .remove = sony_pic_remove,
                .suspend = sony_pic_suspend,
                .resume = sony_pic_resume,
                },
};

static struct dmi_system_id __initdata sonypi_dmi_table[] = {
        {
                .ident = "Sony Vaio",
                .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
                        DMI_MATCH(DMI_PRODUCT_NAME, "PCG-"),
                },
        },
        {
                .ident = "Sony Vaio",
                .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
                        DMI_MATCH(DMI_PRODUCT_NAME, "VGN-"),
                },
        },
        { }
};

static int __init sony_laptop_init(void)
{
        int result;

        if (!no_spic && dmi_check_system(sonypi_dmi_table)) {
                result = acpi_bus_register_driver(&sony_pic_driver);
                if (result) {
                        printk(KERN_ERR DRV_PFX
                                        "Unable to register SPIC driver.");
                        goto out;
                }
        }

        result = acpi_bus_register_driver(&sony_nc_driver);
        if (result) {
                printk(KERN_ERR DRV_PFX "Unable to register SNC driver.");
                goto out_unregister_pic;
        }

        return 0;

out_unregister_pic:
        if (!no_spic)
                acpi_bus_unregister_driver(&sony_pic_driver);
out:
        return result;
}

static void __exit sony_laptop_exit(void)
{
        acpi_bus_unregister_driver(&sony_nc_driver);
        if (!no_spic)
                acpi_bus_unregister_driver(&sony_pic_driver);
}

module_init(sony_laptop_init);
module_exit(sony_laptop_exit);