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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 AlcĂ´ve <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>
#include <linux/sony-laptop.h>
#ifdef CONFIG_SONYPI_COMPAT
#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)");

static int camera;            /* = 0 */
module_param(camera, int, 0444);
MODULE_PARM_DESC(camera,
             "set this to 1 to enable Motion Eye camera controls "
             "(only use it if you have a C1VE or C1VN model)");

#ifdef CONFIG_SONYPI_COMPAT
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 indexes in the keymap
 */
static int sony_laptop_input_index[] = {
      -1,   /* no event */
      -1,   /* SONYPI_EVENT_JOGDIAL_DOWN */
      -1,   /* SONYPI_EVENT_JOGDIAL_UP */
      -1,   /* SONYPI_EVENT_JOGDIAL_DOWN_PRESSED */
      -1,   /* SONYPI_EVENT_JOGDIAL_UP_PRESSED */
      -1,   /* SONYPI_EVENT_JOGDIAL_PRESSED */
      -1,   /* SONYPI_EVENT_JOGDIAL_RELEASED */
       0,   /* SONYPI_EVENT_CAPTURE_PRESSED */
       1,   /* SONYPI_EVENT_CAPTURE_RELEASED */
       2,   /* SONYPI_EVENT_CAPTURE_PARTIALPRESSED */
       3,   /* SONYPI_EVENT_CAPTURE_PARTIALRELEASED */
       4,   /* SONYPI_EVENT_FNKEY_ESC */
       5,   /* SONYPI_EVENT_FNKEY_F1 */
       6,   /* SONYPI_EVENT_FNKEY_F2 */
       7,   /* SONYPI_EVENT_FNKEY_F3 */
       8,   /* SONYPI_EVENT_FNKEY_F4 */
       9,   /* SONYPI_EVENT_FNKEY_F5 */
      10,   /* SONYPI_EVENT_FNKEY_F6 */
      11,   /* SONYPI_EVENT_FNKEY_F7 */
      12,   /* SONYPI_EVENT_FNKEY_F8 */
      13,   /* SONYPI_EVENT_FNKEY_F9 */
      14,   /* SONYPI_EVENT_FNKEY_F10 */
      15,   /* SONYPI_EVENT_FNKEY_F11 */
      16,   /* SONYPI_EVENT_FNKEY_F12 */
      17,   /* SONYPI_EVENT_FNKEY_1 */
      18,   /* SONYPI_EVENT_FNKEY_2 */
      19,   /* SONYPI_EVENT_FNKEY_D */
      20,   /* SONYPI_EVENT_FNKEY_E */
      21,   /* SONYPI_EVENT_FNKEY_F */
      22,   /* SONYPI_EVENT_FNKEY_S */
      23,   /* SONYPI_EVENT_FNKEY_B */
      24,   /* SONYPI_EVENT_BLUETOOTH_PRESSED */
      25,   /* SONYPI_EVENT_PKEY_P1 */
      26,   /* SONYPI_EVENT_PKEY_P2 */
      27,   /* SONYPI_EVENT_PKEY_P3 */
      28,   /* SONYPI_EVENT_BACK_PRESSED */
      -1,   /* SONYPI_EVENT_LID_CLOSED */
      -1,   /* SONYPI_EVENT_LID_OPENED */
      29,   /* SONYPI_EVENT_BLUETOOTH_ON */
      30,   /* SONYPI_EVENT_BLUETOOTH_OFF */
      31,   /* SONYPI_EVENT_HELP_PRESSED */
      32,   /* SONYPI_EVENT_FNKEY_ONLY */
      33,   /* SONYPI_EVENT_JOGDIAL_FAST_DOWN */
      34,   /* SONYPI_EVENT_JOGDIAL_FAST_UP */
      35,   /* SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED */
      36,   /* SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED */
      37,   /* SONYPI_EVENT_JOGDIAL_VFAST_DOWN */
      38,   /* SONYPI_EVENT_JOGDIAL_VFAST_UP */
      39,   /* SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED */
      40,   /* SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED */
      41,   /* SONYPI_EVENT_ZOOM_PRESSED */
      42,   /* SONYPI_EVENT_THUMBPHRASE_PRESSED */
      43,   /* SONYPI_EVENT_MEYE_FACE */
      44,   /* SONYPI_EVENT_MEYE_OPPOSITE */
      45,   /* SONYPI_EVENT_MEMORYSTICK_INSERT */
      46,   /* SONYPI_EVENT_MEMORYSTICK_EJECT */
      -1,   /* SONYPI_EVENT_ANYBUTTON_RELEASED */
      -1,   /* SONYPI_EVENT_BATTERY_INSERT */
      -1,   /* SONYPI_EVENT_BATTERY_REMOVE */
      -1,   /* SONYPI_EVENT_FNKEY_RELEASED */
      47,   /* SONYPI_EVENT_WIRELESS_ON */
      48,   /* SONYPI_EVENT_WIRELESS_OFF */
};

static int sony_laptop_input_keycode_map[] = {
      KEY_CAMERA, /*  0 SONYPI_EVENT_CAPTURE_PRESSED */
      KEY_RESERVED,     /*  1 SONYPI_EVENT_CAPTURE_RELEASED */
      KEY_RESERVED,     /*  2 SONYPI_EVENT_CAPTURE_PARTIALPRESSED */
      KEY_RESERVED,     /*  3 SONYPI_EVENT_CAPTURE_PARTIALRELEASED */
      KEY_FN_ESC, /*  4 SONYPI_EVENT_FNKEY_ESC */
      KEY_FN_F1,  /*  5 SONYPI_EVENT_FNKEY_F1 */
      KEY_FN_F2,  /*  6 SONYPI_EVENT_FNKEY_F2 */
      KEY_FN_F3,  /*  7 SONYPI_EVENT_FNKEY_F3 */
      KEY_FN_F4,  /*  8 SONYPI_EVENT_FNKEY_F4 */
      KEY_FN_F5,  /*  9 SONYPI_EVENT_FNKEY_F5 */
      KEY_FN_F6,  /* 10 SONYPI_EVENT_FNKEY_F6 */
      KEY_FN_F7,  /* 11 SONYPI_EVENT_FNKEY_F7 */
      KEY_FN_F8,  /* 12 SONYPI_EVENT_FNKEY_F8 */
      KEY_FN_F9,  /* 13 SONYPI_EVENT_FNKEY_F9 */
      KEY_FN_F10, /* 14 SONYPI_EVENT_FNKEY_F10 */
      KEY_FN_F11, /* 15 SONYPI_EVENT_FNKEY_F11 */
      KEY_FN_F12, /* 16 SONYPI_EVENT_FNKEY_F12 */
      KEY_FN_F1,  /* 17 SONYPI_EVENT_FNKEY_1 */
      KEY_FN_F2,  /* 18 SONYPI_EVENT_FNKEY_2 */
      KEY_FN_D,   /* 19 SONYPI_EVENT_FNKEY_D */
      KEY_FN_E,   /* 20 SONYPI_EVENT_FNKEY_E */
      KEY_FN_F,   /* 21 SONYPI_EVENT_FNKEY_F */
      KEY_FN_S,   /* 22 SONYPI_EVENT_FNKEY_S */
      KEY_FN_B,   /* 23 SONYPI_EVENT_FNKEY_B */
      KEY_BLUETOOTH,    /* 24 SONYPI_EVENT_BLUETOOTH_PRESSED */
      KEY_PROG1,  /* 25 SONYPI_EVENT_PKEY_P1 */
      KEY_PROG2,  /* 26 SONYPI_EVENT_PKEY_P2 */
      KEY_PROG3,  /* 27 SONYPI_EVENT_PKEY_P3 */
      KEY_BACK,   /* 28 SONYPI_EVENT_BACK_PRESSED */
      KEY_BLUETOOTH,    /* 29 SONYPI_EVENT_BLUETOOTH_ON */
      KEY_BLUETOOTH,    /* 30 SONYPI_EVENT_BLUETOOTH_OFF */
      KEY_HELP,   /* 31 SONYPI_EVENT_HELP_PRESSED */
      KEY_FN,           /* 32 SONYPI_EVENT_FNKEY_ONLY */
      KEY_RESERVED,     /* 33 SONYPI_EVENT_JOGDIAL_FAST_DOWN */
      KEY_RESERVED,     /* 34 SONYPI_EVENT_JOGDIAL_FAST_UP */
      KEY_RESERVED,     /* 35 SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED */
      KEY_RESERVED,     /* 36 SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED */
      KEY_RESERVED,     /* 37 SONYPI_EVENT_JOGDIAL_VFAST_DOWN */
      KEY_RESERVED,     /* 38 SONYPI_EVENT_JOGDIAL_VFAST_UP */
      KEY_RESERVED,     /* 39 SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED */
      KEY_RESERVED,     /* 40 SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED */
      KEY_ZOOM,   /* 41 SONYPI_EVENT_ZOOM_PRESSED */
      BTN_THUMB,  /* 42 SONYPI_EVENT_THUMBPHRASE_PRESSED */
      KEY_RESERVED,     /* 43 SONYPI_EVENT_MEYE_FACE */
      KEY_RESERVED,     /* 44 SONYPI_EVENT_MEYE_OPPOSITE */
      KEY_RESERVED,     /* 45 SONYPI_EVENT_MEMORYSTICK_INSERT */
      KEY_RESERVED,     /* 46 SONYPI_EVENT_MEMORYSTICK_EJECT */
      KEY_WLAN,   /* 47 SONYPI_EVENT_WIRELESS_ON */
      KEY_WLAN,   /* 48 SONYPI_EVENT_WIRELESS_OFF */
};

/* 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 subsystem */
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 };

      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:
            if (event > ARRAY_SIZE (sony_laptop_input_keycode_map)) {
                  dprintk("sony_laptop_report_input_event, event not known: %d\n", event);
                  break;
            }
            if (sony_laptop_input_index[event] != -1) {
                  kp.key = sony_laptop_input_keycode_map[sony_laptop_input_index[event]];
                  if (kp.key != KEY_UNKNOWN)
                        kp.dev = key_dev;
            }
            break;
      }

      if (kp.dev) {
            input_report_key(kp.dev, kp.key, 1);
            /* we emit the scancode so we can always remap the key */
            input_event(kp.dev, EV_MSC, MSC_SCAN, event);
            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(struct acpi_device *acpi_device)
{
      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;
      key_dev->dev.parent = &acpi_device->dev;

      /* Initialize the Input Drivers: special keys */
      set_bit(EV_KEY, key_dev->evbit);
      set_bit(EV_MSC, key_dev->evbit);
      set_bit(MSC_SCAN, key_dev->mscbit);
      key_dev->keycodesize = sizeof(sony_laptop_input_keycode_map[0]);
      key_dev->keycodemax = ARRAY_SIZE(sony_laptop_input_keycode_map);
      key_dev->keycode = &sony_laptop_input_keycode_map;
      for (i = 0; i < ARRAY_SIZE(sony_laptop_input_keycode_map); i++) {
            if (sony_laptop_input_keycode_map[i] != KEY_RESERVED) {
                  set_bit(sony_laptop_input_keycode_map[i],
                        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;
      key_dev->dev.parent = &acpi_device->dev;

      jog_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
      jog_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_MIDDLE);
      jog_dev->relbit[0] = BIT_MASK(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(lidstate_get, "GLID");

SNC_HANDLE_NAMES(indicatorlamp_get, "GILS");
SNC_HANDLE_NAMES(indicatorlamp_set, "SILS");

SNC_HANDLE_NAMES(gainbass_get, "GMGB");
SNC_HANDLE_NAMES(gainbass_set, "CMGB");

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),
      SNC_HANDLE(lidstate, snc_lidstate_get, NULL,
                  boolean_validate, 0),
      SNC_HANDLE(indicatorlamp, snc_indicatorlamp_get, snc_indicatorlamp_set,
                  boolean_validate, 0),
      SNC_HANDLE(gainbass, snc_gainbass_get, snc_gainbass_set,
                  boolean_validate, 0),
      /* 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,
};

/*
 * New SNC-only Vaios event mapping to driver known keys
 */
struct sony_nc_event {
      u8    data;
      u8    event;
};

static struct sony_nc_event *sony_nc_events;

/* Vaio C* --maybe also FE*, N* and AR* ?-- special init sequence
 * for Fn keys
 */
static int sony_nc_C_enable(const struct dmi_system_id *id)
{
      int result = 0;

      printk(KERN_NOTICE DRV_PFX "detected %s\n", id->ident);

      sony_nc_events = id->driver_data;

      if (acpi_callsetfunc(sony_nc_acpi_handle, "SN02", 0x4, &result) < 0
                  || acpi_callsetfunc(sony_nc_acpi_handle, "SN07", 0x2, &result) < 0
                  || acpi_callsetfunc(sony_nc_acpi_handle, "SN02", 0x10, &result) < 0
                  || acpi_callsetfunc(sony_nc_acpi_handle, "SN07", 0x0, &result) < 0
                  || acpi_callsetfunc(sony_nc_acpi_handle, "SN03", 0x2, &result) < 0
                  || acpi_callsetfunc(sony_nc_acpi_handle, "SN07", 0x101, &result) < 0) {
            printk(KERN_WARNING DRV_PFX "failed to initialize SNC, some "
                        "functionalities may be missing\n");
            return 1;
      }
      return 0;
}

static struct sony_nc_event sony_C_events[] = {
      { 0x81, SONYPI_EVENT_FNKEY_F1 },
      { 0x01, SONYPI_EVENT_FNKEY_RELEASED },
      { 0x85, SONYPI_EVENT_FNKEY_F5 },
      { 0x05, SONYPI_EVENT_FNKEY_RELEASED },
      { 0x86, SONYPI_EVENT_FNKEY_F6 },
      { 0x06, SONYPI_EVENT_FNKEY_RELEASED },
      { 0x87, SONYPI_EVENT_FNKEY_F7 },
      { 0x07, SONYPI_EVENT_FNKEY_RELEASED },
      { 0x8A, SONYPI_EVENT_FNKEY_F10 },
      { 0x0A, SONYPI_EVENT_FNKEY_RELEASED },
      { 0x8C, SONYPI_EVENT_FNKEY_F12 },
      { 0x0C, SONYPI_EVENT_FNKEY_RELEASED },
      { 0, 0 },
};

/* SNC-only model map */
static const struct dmi_system_id sony_nc_ids[] = {
            {
                  .ident = "Sony Vaio FE Series",
                  .callback = sony_nc_C_enable,
                  .driver_data = sony_C_events,
                  .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
                        DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FE"),
                  },
            },
            {
                  .ident = "Sony Vaio FZ Series",
                  .callback = sony_nc_C_enable,
                  .driver_data = sony_C_events,
                  .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
                        DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FZ"),
                  },
            },
            {
                  .ident = "Sony Vaio C Series",
                  .callback = sony_nc_C_enable,
                  .driver_data = sony_C_events,
                  .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
                        DMI_MATCH(DMI_PRODUCT_NAME, "VGN-C"),
                  },
            },
            { }
};

/*
 * ACPI callbacks
 */
static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
{
      struct sony_nc_event *evmap;
      u32 ev = event;
      int result;

      if (ev == 0x92) {
            /* read the key pressed from EC.GECR
             * A call to SN07 with 0x0202 will do it as well respecting
             * the current protocol on different OSes
             *
             * Note: the path for GECR may be
             *   \_SB.PCI0.LPCB.EC (C, FE, AR, N and friends)
             *   \_SB.PCI0.PIB.EC0 (VGN-FR notifications are sent directly, no GECR)
             *
             * TODO: we may want to do the same for the older GHKE -need
             *       dmi list- so this snippet may become one more callback.
             */
            if (acpi_callsetfunc(handle, "SN07", 0x0202, &result) < 0)
                  dprintk("sony_acpi_notify, unable to decode event 0x%.2x\n", ev);
            else
                  ev = result & 0xFF;
      }

      if (sony_nc_events)
            for (evmap = sony_nc_events; evmap->event; evmap++) {
                  if (evmap->data == ev) {
                        ev = evmap->event;
                        break;
                  }
            }

      dprintk("sony_acpi_notify, event: 0x%.2x\n", ev);
      sony_laptop_report_input_event(ev);
      acpi_bus_generate_proc_event(sony_nc_acpi_device, 1, ev);
}

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;
            }
      }

      /* set the last requested brightness level */
      if (sony_backlight_device &&
                  !sony_backlight_update_status(sony_backlight_device))
            printk(KERN_WARNING DRV_PFX "unable to restore brightness level");

      /* re-initialize models with specific requirements */
      dmi_check_system(sony_nc_ids);

      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;

      /* read device status */
      result = acpi_bus_get_status(device);
      /* bail IFF the above call was successful and the device is not present */
      if (!result && !device->status.present) {
            dprintk("Device not present\n");
            result = -ENODEV;
            goto outwalk;
      }

      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;
            }
      }

      /* try to _INI the device if such method exists (ACPI spec 3.0-6.5.1
       * should be respected as we already checked for the device presence above */
      if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, METHOD_NAME__INI, &handle))) {
            dprintk("Invoking _INI\n");
            if (ACPI_FAILURE(acpi_evaluate_object(sony_nc_acpi_handle, METHOD_NAME__INI,
                                    NULL, NULL)))
                  dprintk("_INI Method failed\n");
      }

      /* setup input devices and helper fifo */
      result = sony_laptop_setup_input(device);
      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 (%u)\n", status);
            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;
            }

      }

      /* initialize models with specific requirements */
      dmi_check_system(sony_nc_ids);

      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 const struct acpi_device_id sony_device_ids[] = {
      {SONY_NC_HID, 0},
      {SONY_PIC_HID, 0},
      {"", 0},
};
MODULE_DEVICE_TABLE(acpi, sony_device_ids);

static const struct acpi_device_id sony_nc_device_ids[] = {
      {SONY_NC_HID, 0},
      {"", 0},
};

static struct acpi_driver sony_nc_driver = {
      .name = SONY_NC_DRIVER_NAME,
      .class = SONY_NC_CLASS,
      .ids = sony_nc_device_ids,
      .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 SONYPI_TYPE1_OFFSET   0x04
#define SONYPI_TYPE2_OFFSET   0x12
#define SONYPI_TYPE3_OFFSET   0x12

struct sony_pic_ioport {
      struct acpi_resource_io io1;
      struct acpi_resource_io io2;
      struct list_head  list;
};

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

struct sony_pic_dev {
      int               model;
      u16               evport_offset;
      u8                camera_power;
      u8                bluetooth_power;
      u8                wwan_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;
      struct mutex            lock;
};

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->io1.minimum + 4) & 2,
                  ITERATIONS_LONG);
      outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
      v1 = inb_p(spic_dev.cur_ioport->io1.minimum + 4);
      v2 = inb_p(spic_dev.cur_ioport->io1.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->io1.minimum + 4) & 2,
                  ITERATIONS_LONG);
      outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
      wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
                  ITERATIONS_LONG);
      outb(fn, spic_dev.cur_ioport->io1.minimum);
      v1 = inb_p(spic_dev.cur_ioport->io1.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->io1.minimum + 4) & 2, ITERATIONS_LONG);
      outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
      wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
      outb(fn, spic_dev.cur_ioport->io1.minimum);
      wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
      outb(v, spic_dev.cur_ioport->io1.minimum);
      v1 = inb_p(spic_dev.cur_ioport->io1.minimum);
      dprintk("sony_pic_call3: 0x%.4x\n", v1);
      return v1;
}

/* camera tests and poweron/poweroff */
#define SONYPI_CAMERA_PICTURE       5
#define SONYPI_CAMERA_CONTROL       0x10

#define SONYPI_CAMERA_BRIGHTNESS          0
#define SONYPI_CAMERA_CONTRAST                  1
#define SONYPI_CAMERA_HUE                 2
#define SONYPI_CAMERA_COLOR               3
#define SONYPI_CAMERA_SHARPNESS                 4

#define SONYPI_CAMERA_EXPOSURE_MASK       0xC
#define SONYPI_CAMERA_WHITE_BALANCE_MASK  0x3
#define SONYPI_CAMERA_PICTURE_MODE_MASK         0x30
#define SONYPI_CAMERA_MUTE_MASK                 0x40

/* the rest don't need a loop until not 0xff */
#define SONYPI_CAMERA_AGC                 6
#define SONYPI_CAMERA_AGC_MASK                  0x30
#define SONYPI_CAMERA_SHUTTER_MASK        0x7

#define SONYPI_CAMERA_SHUTDOWN_REQUEST          7
#define SONYPI_CAMERA_CONTROL             0x10

#define SONYPI_CAMERA_STATUS              7
#define SONYPI_CAMERA_STATUS_READY        0x2
#define SONYPI_CAMERA_STATUS_POSITION           0x4

#define SONYPI_DIRECTION_BACKWARDS        0x4

#define SONYPI_CAMERA_REVISION                  8
#define SONYPI_CAMERA_ROMVERSION          9

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 int __sony_pic_camera_off(void)
{
      if (!camera) {
            printk(KERN_WARNING DRV_PFX "camera control not enabled\n");
            return -ENODEV;
      }

      wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE,
                        SONYPI_CAMERA_MUTE_MASK),
                  ITERATIONS_SHORT);

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

static int __sony_pic_camera_on(void)
{
      int i, j, x;

      if (!camera) {
            printk(KERN_WARNING DRV_PFX "camera control not enabled\n");
            return -ENODEV;
      }

      if (spic_dev.camera_power)
            return 0;

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

            for (x = 0; x < 100 && sony_pic_call2(0x91, 0x1); x++)
                  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 DRV_PFX "failed to power on camera\n");
            return -ENODEV;
      }

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

      spic_dev.camera_power = 1;
      return 0;
}

/* External camera command (exported to the motion eye v4l driver) */
int sony_pic_camera_command(int command, u8 value)
{
      if (!camera)
            return -EIO;

      mutex_lock(&spic_dev.lock);

      switch (command) {
      case SONY_PIC_COMMAND_SETCAMERA:
            if (value)
                  __sony_pic_camera_on();
            else
                  __sony_pic_camera_off();
            break;
      case SONY_PIC_COMMAND_SETCAMERABRIGHTNESS:
            wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_BRIGHTNESS, value),
                        ITERATIONS_SHORT);
            break;
      case SONY_PIC_COMMAND_SETCAMERACONTRAST:
            wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTRAST, value),
                        ITERATIONS_SHORT);
            break;
      case SONY_PIC_COMMAND_SETCAMERAHUE:
            wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_HUE, value),
                        ITERATIONS_SHORT);
            break;
      case SONY_PIC_COMMAND_SETCAMERACOLOR:
            wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_COLOR, value),
                        ITERATIONS_SHORT);
            break;
      case SONY_PIC_COMMAND_SETCAMERASHARPNESS:
            wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_SHARPNESS, value),
                        ITERATIONS_SHORT);
            break;
      case SONY_PIC_COMMAND_SETCAMERAPICTURE:
            wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE, value),
                        ITERATIONS_SHORT);
            break;
      case SONY_PIC_COMMAND_SETCAMERAAGC:
            wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_AGC, value),
                        ITERATIONS_SHORT);
            break;
      default:
            printk(KERN_ERR DRV_PFX "sony_pic_camera_command invalid: %d\n",
                   command);
            break;
      }
      mutex_unlock(&spic_dev.lock);
      return 0;
}
EXPORT_SYMBOL(sony_pic_camera_command);

/* gprs/edge modem (SZ460N and SZ210P), thanks to Joshua Wise */
static void sony_pic_set_wwanpower(u8 state)
{
      state = !!state;
      mutex_lock(&spic_dev.lock);
      if (spic_dev.wwan_power == state) {
            mutex_unlock(&spic_dev.lock);
            return;
      }
      sony_pic_call2(0xB0, state);
      spic_dev.wwan_power = state;
      mutex_unlock(&spic_dev.lock);
}

static ssize_t sony_pic_wwanpower_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_wwanpower(value);

      return count;
}

static ssize_t sony_pic_wwanpower_show(struct device *dev,
            struct device_attribute *attr, char *buffer)
{
      ssize_t count;
      mutex_lock(&spic_dev.lock);
      count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.wwan_power);
      mutex_unlock(&spic_dev.lock);
      return count;
}

/* 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);
      mutex_lock(&spic_dev.lock);
      __sony_pic_set_bluetoothpower(value);
      mutex_unlock(&spic_dev.lock);

      return count;
}

static ssize_t sony_pic_bluetoothpower_show(struct device *dev,
            struct device_attribute *attr, char *buffer)
{
      ssize_t count = 0;
      mutex_lock(&spic_dev.lock);
      count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.bluetooth_power);
      mutex_unlock(&spic_dev.lock);
      return count;
}

/* 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(bluetoothpower, 0644);
static SPIC_ATTR(wwanpower, 0644);
static SPIC_ATTR(fanspeed, 0644);

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

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

/******** SONYPI compatibility **********/
#ifdef CONFIG_SONYPI_COMPAT

/* 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;

      mutex_lock(&spic_dev.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;
      }
      mutex_unlock(&spic_dev.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);

      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 DRV_PFX "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_SONYPI_COMPAT */

/*
 * 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:
            {
                  /* start IO enumeration */
                  struct sony_pic_ioport *ioport = kzalloc(sizeof(*ioport), GFP_KERNEL);
                  if (!ioport)
                        return AE_ERROR;

                  list_add(&ioport->list, &dev->ioports);
                  return AE_OK;
            }

      case ACPI_RESOURCE_TYPE_END_DEPENDENT:
            /* end IO enumeration */
            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 =
                        list_first_entry(&dev->ioports, struct sony_pic_ioport, list);
                  if (!io) {
                        dprintk("Blank IO resource\n");
                        return AE_OK;
                  }

                  if (!ioport->io1.minimum) {
                        memcpy(&ioport->io1, io, sizeof(*io));
                        dprintk("IO1 at 0x%.4x (0x%.2x)\n", ioport->io1.minimum,
                                    ioport->io1.address_length);
                  }
                  else if (!ioport->io2.minimum) {
                        memcpy(&ioport->io2, io, sizeof(*io));
                        dprintk("IO2 at 0x%.4x (0x%.2x)\n", ioport->io2.minimum,
                                    ioport->io2.address_length);
                  }
                  else {
                        printk(KERN_ERR DRV_PFX "Unknown SPIC Type, more than 2 IO Ports\n");
                        return AE_ERROR;
                  }
                  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", NULL, 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;
      /* Type 1 resource layout is:
       *    IO
       *    IO
       *    IRQNoFlags
       *    End
       *
       * Type 2 and 3 resource layout is:
       *    IO
       *    IRQNoFlags
       *    End
       */
      struct {
            struct acpi_resource res1;
            struct acpi_resource res2;
            struct acpi_resource res3;
            struct acpi_resource res4;
      } *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 Type 1 resources */
      if (spic_dev.model == SONYPI_DEVICE_TYPE1) {

            /* setup io resources */
            resource->res1.type = ACPI_RESOURCE_TYPE_IO;
            resource->res1.length = sizeof(struct acpi_resource);
            memcpy(&resource->res1.data.io, &ioport->io1,
                        sizeof(struct acpi_resource_io));

            resource->res2.type = ACPI_RESOURCE_TYPE_IO;
            resource->res2.length = sizeof(struct acpi_resource);
            memcpy(&resource->res2.data.io, &ioport->io2,
                        sizeof(struct acpi_resource_io));

            /* setup irq resource */
            resource->res3.type = ACPI_RESOURCE_TYPE_IRQ;
            resource->res3.length = sizeof(struct acpi_resource);
            memcpy(&resource->res3.data.irq, &irq->irq,
                        sizeof(struct acpi_resource_irq));
            /* we requested a shared irq */
            resource->res3.data.irq.sharable = ACPI_SHARED;

            resource->res4.type = ACPI_RESOURCE_TYPE_END_TAG;

      }
      /* setup Type 2/3 resources */
      else {
            /* setup io resource */
            resource->res1.type = ACPI_RESOURCE_TYPE_IO;
            resource->res1.length = sizeof(struct acpi_resource);
            memcpy(&resource->res1.data.io, &ioport->io1,
                        sizeof(struct acpi_resource_io));

            /* setup irq resource */
            resource->res2.type = ACPI_RESOURCE_TYPE_IRQ;
            resource->res2.length = sizeof(struct acpi_resource);
            memcpy(&resource->res2.data.irq, &irq->irq,
                        sizeof(struct acpi_resource_irq));
            /* we requested a shared irq */
            resource->res2.data.irq.sharable = ACPI_SHARED;

            resource->res3.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\n");
            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;
      u8 ev = 0;
      u8 data_mask = 0;
      u8 device_event = 0;

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

      ev = inb_p(dev->cur_ioport->io1.minimum);
      if (dev->cur_ioport->io2.minimum)
            data_mask = inb_p(dev->cur_ioport->io2.minimum);
      else
            data_mask = inb_p(dev->cur_ioport->io1.minimum + dev->evport_offset);

      dprintk("event ([%.2x] [%.2x]) at port 0x%.4x(+0x%.2x)\n",
                  ev, data_mask, dev->cur_ioport->io1.minimum, dev->evport_offset);

      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_proc_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;

      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->io1.minimum,
                  spic_dev.cur_ioport->io1.address_length);
      if (spic_dev.cur_ioport->io2.minimum)
            release_region(spic_dev.cur_ioport->io2.minimum,
                        spic_dev.cur_ioport->io2.address_length);

      sonypi_compat_exit();

      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();
      mutex_init(&spic_dev.lock);

      /* model specific characteristics */
      switch(spic_dev.model) {
            case SONYPI_DEVICE_TYPE1:
                  spic_dev.evport_offset = SONYPI_TYPE1_OFFSET;
                  break;
            case SONYPI_DEVICE_TYPE3:
                  spic_dev.evport_offset = SONYPI_TYPE3_OFFSET;
                  break;
            case SONYPI_DEVICE_TYPE2:
            default:
                  spic_dev.evport_offset = SONYPI_TYPE2_OFFSET;
                  break;
      }

      /* 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(device);
      if (result) {
            printk(KERN_ERR DRV_PFX
                        "Unabe to create input devices.\n");
            goto err_free_resources;
      }

      if (sonypi_compat_init())
            goto err_remove_input;

      /* request io port */
      list_for_each_entry_reverse(io, &spic_dev.ioports, list) {
            if (request_region(io->io1.minimum, io->io1.address_length,
                              "Sony Programable I/O Device")) {
                  dprintk("I/O port1: 0x%.4x (0x%.4x) + 0x%.2x\n",
                              io->io1.minimum, io->io1.maximum,
                              io->io1.address_length);
                  /* Type 1 have 2 ioports */
                  if (io->io2.minimum) {
                        if (request_region(io->io2.minimum,
                                    io->io2.address_length,
                                    "Sony Programable I/O Device")) {
                              dprintk("I/O port2: 0x%.4x (0x%.4x) + 0x%.2x\n",
                                          io->io2.minimum, io->io2.maximum,
                                          io->io2.address_length);
                              spic_dev.cur_ioport = io;
                              break;
                        }
                        else {
                              dprintk("Unable to get I/O port2: "
                                          "0x%.4x (0x%.4x) + 0x%.2x\n",
                                          io->io2.minimum, io->io2.maximum,
                                          io->io2.address_length);
                              release_region(io->io1.minimum,
                                          io->io1.address_length);
                        }
                  }
                  else {
                        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_compat;
      }

      /* request IRQ */
      list_for_each_entry_reverse(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;

      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->io1.minimum,
                  spic_dev.cur_ioport->io1.address_length);
      if (spic_dev.cur_ioport->io2.minimum)
            release_region(spic_dev.cur_ioport->io2.minimum,
                        spic_dev.cur_ioport->io2.address_length);

err_remove_compat:
      sonypi_compat_exit();

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 const struct acpi_device_id sony_pic_device_ids[] = {
      {SONY_PIC_HID, 0},
      {"", 0},
};

static struct acpi_driver sony_pic_driver = {
      .name = SONY_PIC_DRIVER_NAME,
      .class = SONY_PIC_CLASS,
      .ids = sony_pic_device_ids,
      .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);

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