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 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
  *  toshiba_acpi.c - Toshiba Laptop ACPI Extras
  *
  *  Copyright (C) 2002-2004 John Belmonte
  *  Copyright (C) 2008 Philip Langdale
  *  Copyright (C) 2010 Pierre Ducroquet
  *  Copyright (C) 2014-2016 Azael Avalos
  *
  *  The devolpment page for this driver is located at
  *  http://memebeam.org/toys/ToshibaAcpiDriver.
  *
  *  Credits:
  *  Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse
  *      engineering the Windows drivers
  *  Yasushi Nagato - changes for linux kernel 2.4 -> 2.5
  *  Rob Miller - TV out and hotkeys help
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #define TOSHIBA_ACPI_VERSION    "0.24"
 #define PROC_INTERFACE_VERSION  1
 
 #include <linux/compiler.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/backlight.h>
 #include <linux/input.h>
 #include <linux/input/sparse-keymap.h>
 #include <linux/leds.h>
 #include <linux/slab.h>
 #include <linux/workqueue.h>
 #include <linux/i8042.h>
 #include <linux/acpi.h>
 #include <linux/dmi.h>
 #include <linux/uaccess.h>
 #include <linux/miscdevice.h>
 #include <linux/rfkill.h>
 #include <linux/iio/iio.h>
 #include <linux/toshiba.h>
 #include <acpi/video.h>
 
 MODULE_AUTHOR("John Belmonte");
 MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
 MODULE_LICENSE("GPL");
 
 #define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
 
 /* Scan code for Fn key on TOS1900 models */
 #define TOS1900_FN_SCAN     0x6e
 
 /* Toshiba ACPI method paths */
 #define METHOD_VIDEO_OUT    "\\_SB_.VALX.DSSX"
 
 /*
  * The Toshiba configuration interface is composed of the HCI and the SCI,
  * which are defined as follows:
  *
  * HCI is Toshiba's "Hardware Control Interface" which is supposed to
  * be uniform across all their models.  Ideally we would just call
  * dedicated ACPI methods instead of using this primitive interface.
  * However the ACPI methods seem to be incomplete in some areas (for
  * example they allow setting, but not reading, the LCD brightness value),
  * so this is still useful.
  *
  * SCI stands for "System Configuration Interface" which aim is to
  * conceal differences in hardware between different models.
  */
 
 #define TCI_WORDS           6
 
 /* Operations */
 #define HCI_SET             0xff00
 #define HCI_GET             0xfe00
 #define SCI_OPEN            0xf100
 #define SCI_CLOSE           0xf200
 #define SCI_GET             0xf300
 #define SCI_SET             0xf400
 
 /* Return codes */
 #define TOS_SUCCESS         0x0000
 #define TOS_SUCCESS2            0x0001
 #define TOS_OPEN_CLOSE_OK       0x0044
 #define TOS_FAILURE         0x1000
 #define TOS_NOT_SUPPORTED       0x8000
 #define TOS_ALREADY_OPEN        0x8100
 #define TOS_NOT_OPENED          0x8200
 #define TOS_INPUT_DATA_ERROR        0x8300
 #define TOS_WRITE_PROTECTED     0x8400
 #define TOS_NOT_PRESENT         0x8600
 #define TOS_FIFO_EMPTY          0x8c00
 #define TOS_DATA_NOT_AVAILABLE      0x8d20
 #define TOS_NOT_INITIALIZED     0x8d50
 #define TOS_NOT_INSTALLED       0x8e00
 
 /* Registers */
 #define HCI_FAN             0x0004
 #define HCI_TR_BACKLIGHT        0x0005
 #define HCI_SYSTEM_EVENT        0x0016
 #define HCI_VIDEO_OUT           0x001c
 #define HCI_HOTKEY_EVENT        0x001e
 #define HCI_LCD_BRIGHTNESS      0x002a
 #define HCI_WIRELESS            0x0056
 #define HCI_ACCELEROMETER       0x006d
 #define HCI_COOLING_METHOD      0x007f
 #define HCI_KBD_ILLUMINATION        0x0095
 #define HCI_ECO_MODE            0x0097
 #define HCI_ACCELEROMETER2      0x00a6
 #define HCI_SYSTEM_INFO         0xc000
 #define SCI_PANEL_POWER_ON      0x010d
 #define SCI_ILLUMINATION        0x014e
 #define SCI_USB_SLEEP_CHARGE        0x0150
 #define SCI_KBD_ILLUM_STATUS        0x015c
 #define SCI_USB_SLEEP_MUSIC     0x015e
 #define SCI_USB_THREE           0x0169
 #define SCI_TOUCHPAD            0x050e
 #define SCI_KBD_FUNCTION_KEYS       0x0522
 
 /* Field definitions */
 #define HCI_ACCEL_MASK          0x7fff
 #define HCI_ACCEL_DIRECTION_MASK    0x8000
 #define HCI_HOTKEY_DISABLE      0x0b
 #define HCI_HOTKEY_ENABLE       0x09
 #define HCI_HOTKEY_SPECIAL_FUNCTIONS    0x10
 #define HCI_LCD_BRIGHTNESS_BITS     3
 #define HCI_LCD_BRIGHTNESS_SHIFT    (16-HCI_LCD_BRIGHTNESS_BITS)
 #define HCI_LCD_BRIGHTNESS_LEVELS   (1 << HCI_LCD_BRIGHTNESS_BITS)
 #define HCI_MISC_SHIFT          0x10
 #define HCI_SYSTEM_TYPE1        0x10
 #define HCI_SYSTEM_TYPE2        0x11
 #define HCI_VIDEO_OUT_LCD       0x1
 #define HCI_VIDEO_OUT_CRT       0x2
 #define HCI_VIDEO_OUT_TV        0x4
 #define SCI_KBD_MODE_MASK       0x1f
 #define SCI_KBD_MODE_FNZ        0x1
 #define SCI_KBD_MODE_AUTO       0x2
 #define SCI_KBD_MODE_ON         0x8
 #define SCI_KBD_MODE_OFF        0x10
 #define SCI_KBD_TIME_MAX        0x3c001a
 #define HCI_WIRELESS_STATUS     0x1
 #define HCI_WIRELESS_WWAN       0x3
 #define HCI_WIRELESS_WWAN_STATUS    0x2000
 #define HCI_WIRELESS_WWAN_POWER     0x4000
 #define SCI_USB_CHARGE_MODE_MASK    0xff
 #define SCI_USB_CHARGE_DISABLED     0x00
 #define SCI_USB_CHARGE_ALTERNATE    0x09
 #define SCI_USB_CHARGE_TYPICAL      0x11
 #define SCI_USB_CHARGE_AUTO     0x21
 #define SCI_USB_CHARGE_BAT_MASK     0x7
 #define SCI_USB_CHARGE_BAT_LVL_OFF  0x1
 #define SCI_USB_CHARGE_BAT_LVL_ON   0x4
 #define SCI_USB_CHARGE_BAT_LVL      0x0200
 #define SCI_USB_CHARGE_RAPID_DSP    0x0300
 
 struct toshiba_acpi_dev {
     struct acpi_device *acpi_dev;
     const char *method_hci;
     struct input_dev *hotkey_dev;
     struct work_struct hotkey_work;
     struct backlight_device *backlight_dev;
     struct led_classdev led_dev;
     struct led_classdev kbd_led;
     struct led_classdev eco_led;
     struct miscdevice miscdev;
     struct rfkill *wwan_rfk;
     struct iio_dev *indio_dev;
 
     int force_fan;
     int last_key_event;
     int key_event_valid;
     int kbd_type;
     int kbd_mode;
     int kbd_time;
     int usbsc_bat_level;
     int usbsc_mode_base;
     int hotkey_event_type;
     int max_cooling_method;
 
     unsigned int illumination_supported:1;
     unsigned int video_supported:1;
     unsigned int fan_supported:1;
     unsigned int system_event_supported:1;
     unsigned int ntfy_supported:1;
     unsigned int info_supported:1;
     unsigned int tr_backlight_supported:1;
     unsigned int kbd_illum_supported:1;
     unsigned int touchpad_supported:1;
     unsigned int eco_supported:1;
     unsigned int accelerometer_supported:1;
     unsigned int usb_sleep_charge_supported:1;
     unsigned int usb_rapid_charge_supported:1;
     unsigned int usb_sleep_music_supported:1;
     unsigned int kbd_function_keys_supported:1;
     unsigned int panel_power_on_supported:1;
     unsigned int usb_three_supported:1;
     unsigned int wwan_supported:1;
     unsigned int cooling_method_supported:1;
     unsigned int sysfs_created:1;
     unsigned int special_functions;
 
     bool kbd_event_generated;
     bool killswitch;
 };
 
 static struct toshiba_acpi_dev *toshiba_acpi;
 
 static bool disable_hotkeys;
 module_param(disable_hotkeys, bool, 0444);
 MODULE_PARM_DESC(disable_hotkeys, "Disables the hotkeys activation");
 
 static const struct acpi_device_id toshiba_device_ids[] = {
     {"TOS6200", 0},
     {"TOS6207", 0},
     {"TOS6208", 0},
     {"TOS1900", 0},
     {"", 0},
 };
 MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
 
 static const struct key_entry toshiba_acpi_keymap[] = {
     { KE_KEY, 0x9e, { KEY_RFKILL } },
     { KE_KEY, 0x101, { KEY_MUTE } },
     { KE_KEY, 0x102, { KEY_ZOOMOUT } },
     { KE_KEY, 0x103, { KEY_ZOOMIN } },
     { KE_KEY, 0x10f, { KEY_TAB } },
     { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
     { KE_KEY, 0x139, { KEY_ZOOMRESET } },
     { KE_KEY, 0x13b, { KEY_COFFEE } },
     { KE_KEY, 0x13c, { KEY_BATTERY } },
     { KE_KEY, 0x13d, { KEY_SLEEP } },
     { KE_KEY, 0x13e, { KEY_SUSPEND } },
     { KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
     { KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
     { KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
     { KE_KEY, 0x142, { KEY_WLAN } },
     { KE_KEY, 0x143, { KEY_TOUCHPAD_TOGGLE } },
     { KE_KEY, 0x17f, { KEY_FN } },
     { KE_KEY, 0xb05, { KEY_PROG2 } },
     { KE_KEY, 0xb06, { KEY_WWW } },
     { KE_KEY, 0xb07, { KEY_MAIL } },
     { KE_KEY, 0xb30, { KEY_STOP } },
     { KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
     { KE_KEY, 0xb32, { KEY_NEXTSONG } },
     { KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
     { KE_KEY, 0xb5a, { KEY_MEDIA } },
     { KE_IGNORE, 0x1430, { KEY_RESERVED } }, /* Wake from sleep */
     { KE_IGNORE, 0x1501, { KEY_RESERVED } }, /* Output changed */
     { KE_IGNORE, 0x1502, { KEY_RESERVED } }, /* HDMI plugged/unplugged */
     { KE_IGNORE, 0x1ABE, { KEY_RESERVED } }, /* Protection level set */
     { KE_IGNORE, 0x1ABF, { KEY_RESERVED } }, /* Protection level off */
     { KE_END, 0 },
 };
 
 static const struct key_entry toshiba_acpi_alt_keymap[] = {
     { KE_KEY, 0x102, { KEY_ZOOMOUT } },
     { KE_KEY, 0x103, { KEY_ZOOMIN } },
     { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
     { KE_KEY, 0x139, { KEY_ZOOMRESET } },
     { KE_KEY, 0x13c, { KEY_BRIGHTNESSDOWN } },
     { KE_KEY, 0x13d, { KEY_BRIGHTNESSUP } },
     { KE_KEY, 0x13e, { KEY_SWITCHVIDEOMODE } },
     { KE_KEY, 0x13f, { KEY_TOUCHPAD_TOGGLE } },
     { KE_KEY, 0x157, { KEY_MUTE } },
     { KE_KEY, 0x158, { KEY_WLAN } },
     { KE_END, 0 },
 };
 
 /*
  * List of models which have a broken acpi-video backlight interface and thus
  * need to use the toshiba (vendor) interface instead.
  */
 static const struct dmi_system_id toshiba_vendor_backlight_dmi[] = {
     {}
 };
 
 /*
  * Utility
  */
 
 static inline void _set_bit(u32 *word, u32 mask, int value)
 {
     *word = (*word & ~mask) | (mask * value);
 }
 
 /*
  * ACPI interface wrappers
  */
 
 static int write_acpi_int(const char *methodName, int val)
 {
     acpi_status status;
 
     status = acpi_execute_simple_method(NULL, (char *)methodName, val);
     return (status == AE_OK) ? 0 : -EIO;
 }
 
 /*
  * Perform a raw configuration call.  Here we don't care about input or output
  * buffer format.
  */
 static acpi_status tci_raw(struct toshiba_acpi_dev *dev,
                const u32 in[TCI_WORDS], u32 out[TCI_WORDS])
 {
     union acpi_object in_objs[TCI_WORDS], out_objs[TCI_WORDS + 1];
     struct acpi_object_list params;
     struct acpi_buffer results;
     acpi_status status;
     int i;
 
     params.count = TCI_WORDS;
     params.pointer = in_objs;
     for (i = 0; i < TCI_WORDS; ++i) {
         in_objs[i].type = ACPI_TYPE_INTEGER;
         in_objs[i].integer.value = in[i];
     }
 
     results.length = sizeof(out_objs);
     results.pointer = out_objs;
 
     status = acpi_evaluate_object(dev->acpi_dev->handle,
                       (char *)dev->method_hci, &params,
                       &results);
     if ((status == AE_OK) && (out_objs->package.count <= TCI_WORDS)) {
         for (i = 0; i < out_objs->package.count; ++i)
             out[i] = out_objs->package.elements[i].integer.value;
     }
 
     return status;
 }
 
 /*
  * Common hci tasks
  *
  * In addition to the ACPI status, the HCI system returns a result which
  * may be useful (such as "not supported").
  */
 
 static u32 hci_write(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
 {
     u32 in[TCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status = tci_raw(dev, in, out);
 
     return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
 }
 
 static u32 hci_read(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1)
 {
     u32 in[TCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status = tci_raw(dev, in, out);
 
     if (ACPI_FAILURE(status))
         return TOS_FAILURE;
 
     *out1 = out[2];
 
     return out[0];
 }
 
 /*
  * Common sci tasks
  */
 
 static int sci_open(struct toshiba_acpi_dev *dev)
 {
     u32 in[TCI_WORDS] = { SCI_OPEN, 0, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status = tci_raw(dev, in, out);
 
     if  (ACPI_FAILURE(status)) {
         pr_err("ACPI call to open SCI failed\n");
         return 0;
     }
 
     if (out[0] == TOS_OPEN_CLOSE_OK) {
         return 1;
     } else if (out[0] == TOS_ALREADY_OPEN) {
         pr_info("Toshiba SCI already opened\n");
         return 1;
     } else if (out[0] == TOS_NOT_SUPPORTED) {
         /*
          * Some BIOSes do not have the SCI open/close functions
          * implemented and return 0x8000 (Not Supported), failing to
          * register some supported features.
          *
          * Simply return 1 if we hit those affected laptops to make the
          * supported features work.
          *
          * In the case that some laptops really do not support the SCI,
          * all the SCI dependent functions check for TOS_NOT_SUPPORTED,
          * and thus, not registering support for the queried feature.
          */
         return 1;
     } else if (out[0] == TOS_NOT_PRESENT) {
         pr_info("Toshiba SCI is not present\n");
     }
 
     return 0;
 }
 
 static void sci_close(struct toshiba_acpi_dev *dev)
 {
     u32 in[TCI_WORDS] = { SCI_CLOSE, 0, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status = tci_raw(dev, in, out);
 
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to close SCI failed\n");
         return;
     }
 
     if (out[0] == TOS_OPEN_CLOSE_OK)
         return;
     else if (out[0] == TOS_NOT_OPENED)
         pr_info("Toshiba SCI not opened\n");
     else if (out[0] == TOS_NOT_PRESENT)
         pr_info("Toshiba SCI is not present\n");
 }
 
 static u32 sci_read(struct toshiba_acpi_dev *dev, u32 reg, u32 *out1)
 {
     u32 in[TCI_WORDS] = { SCI_GET, reg, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status = tci_raw(dev, in, out);
 
     if (ACPI_FAILURE(status))
         return TOS_FAILURE;
 
     *out1 = out[2];
 
     return out[0];
 }
 
 static u32 sci_write(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
 {
     u32 in[TCI_WORDS] = { SCI_SET, reg, in1, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status = tci_raw(dev, in, out);
 
     return ACPI_SUCCESS(status) ? out[0] : TOS_FAILURE;
 }
 
 /* Illumination support */
 static void toshiba_illumination_available(struct toshiba_acpi_dev *dev)
 {
     u32 in[TCI_WORDS] = { SCI_GET, SCI_ILLUMINATION, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     dev->illumination_supported = 0;
 
     if (!sci_open(dev))
         return;
 
     status = tci_raw(dev, in, out);
     sci_close(dev);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to query Illumination support failed\n");
         return;
     }
 
     if (out[0] != TOS_SUCCESS)
         return;
 
     dev->illumination_supported = 1;
 }
 
 static void toshiba_illumination_set(struct led_classdev *cdev,
                      enum led_brightness brightness)
 {
     struct toshiba_acpi_dev *dev = container_of(cdev,
             struct toshiba_acpi_dev, led_dev);
     u32 result;
     u32 state;
 
     /* First request : initialize communication. */
     if (!sci_open(dev))
         return;
 
     /* Switch the illumination on/off */
     state = brightness ? 1 : 0;
     result = sci_write(dev, SCI_ILLUMINATION, state);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call for illumination failed\n");
 }
 
 static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
 {
     struct toshiba_acpi_dev *dev = container_of(cdev,
             struct toshiba_acpi_dev, led_dev);
     u32 result;
     u32 state;
 
     /* First request : initialize communication. */
     if (!sci_open(dev))
         return LED_OFF;
 
     /* Check the illumination */
     result = sci_read(dev, SCI_ILLUMINATION, &state);
     sci_close(dev);
     if (result == TOS_FAILURE) {
         pr_err("ACPI call for illumination failed\n");
         return LED_OFF;
     } else if (result != TOS_SUCCESS) {
         return LED_OFF;
     }
 
     return state ? LED_FULL : LED_OFF;
 }
 
 /* KBD Illumination */
 static void toshiba_kbd_illum_available(struct toshiba_acpi_dev *dev)
 {
     u32 in[TCI_WORDS] = { SCI_GET, SCI_KBD_ILLUM_STATUS, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     dev->kbd_illum_supported = 0;
     dev->kbd_event_generated = false;
 
     if (!sci_open(dev))
         return;
 
     status = tci_raw(dev, in, out);
     sci_close(dev);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to query kbd illumination support failed\n");
         return;
     }
 
     if (out[0] != TOS_SUCCESS)
         return;
 
     /*
      * Check for keyboard backlight timeout max value,
      * previous kbd backlight implementation set this to
      * 0x3c0003, and now the new implementation set this
      * to 0x3c001a, use this to distinguish between them.
      */
     if (out[3] == SCI_KBD_TIME_MAX)
         dev->kbd_type = 2;
     else
         dev->kbd_type = 1;
     /* Get the current keyboard backlight mode */
     dev->kbd_mode = out[2] & SCI_KBD_MODE_MASK;
     /* Get the current time (1-60 seconds) */
     dev->kbd_time = out[2] >> HCI_MISC_SHIFT;
     /* Flag as supported */
     dev->kbd_illum_supported = 1;
 }
 
 static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_write(dev, SCI_KBD_ILLUM_STATUS, time);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to set KBD backlight status failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_read(dev, SCI_KBD_ILLUM_STATUS, time);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to get KBD backlight status failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static enum led_brightness toshiba_kbd_backlight_get(struct led_classdev *cdev)
 {
     struct toshiba_acpi_dev *dev = container_of(cdev,
             struct toshiba_acpi_dev, kbd_led);
     u32 result;
     u32 state;
 
     /* Check the keyboard backlight state */
     result = hci_read(dev, HCI_KBD_ILLUMINATION, &state);
     if (result == TOS_FAILURE) {
         pr_err("ACPI call to get the keyboard backlight failed\n");
         return LED_OFF;
     } else if (result != TOS_SUCCESS) {
         return LED_OFF;
     }
 
     return state ? LED_FULL : LED_OFF;
 }
 
 static void toshiba_kbd_backlight_set(struct led_classdev *cdev,
                      enum led_brightness brightness)
 {
     struct toshiba_acpi_dev *dev = container_of(cdev,
             struct toshiba_acpi_dev, kbd_led);
     u32 result;
     u32 state;
 
     /* Set the keyboard backlight state */
     state = brightness ? 1 : 0;
     result = hci_write(dev, HCI_KBD_ILLUMINATION, state);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to set KBD Illumination mode failed\n");
 }
 
 /* TouchPad support */
 static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_write(dev, SCI_TOUCHPAD, state);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to set the touchpad failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_read(dev, SCI_TOUCHPAD, state);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to query the touchpad failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 /* Eco Mode support */
 static void toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
 {
     u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     dev->eco_supported = 0;
 
     status = tci_raw(dev, in, out);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to get ECO led failed\n");
         return;
     }
 
     if (out[0] == TOS_INPUT_DATA_ERROR) {
         /*
          * If we receive 0x8300 (Input Data Error), it means that the
          * LED device is present, but that we just screwed the input
          * parameters.
          *
          * Let's query the status of the LED to see if we really have a
          * success response, indicating the actual presense of the LED,
          * bail out otherwise.
          */
         in[3] = 1;
         status = tci_raw(dev, in, out);
         if (ACPI_FAILURE(status)) {
             pr_err("ACPI call to get ECO led failed\n");
             return;
         }
 
         if (out[0] != TOS_SUCCESS)
             return;
 
         dev->eco_supported = 1;
     }
 }
 
 static enum led_brightness
 toshiba_eco_mode_get_status(struct led_classdev *cdev)
 {
     struct toshiba_acpi_dev *dev = container_of(cdev,
             struct toshiba_acpi_dev, eco_led);
     u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 1, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     status = tci_raw(dev, in, out);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to get ECO led failed\n");
         return LED_OFF;
     }
 
     if (out[0] != TOS_SUCCESS)
         return LED_OFF;
 
     return out[2] ? LED_FULL : LED_OFF;
 }
 
 static void toshiba_eco_mode_set_status(struct led_classdev *cdev,
                      enum led_brightness brightness)
 {
     struct toshiba_acpi_dev *dev = container_of(cdev,
             struct toshiba_acpi_dev, eco_led);
     u32 in[TCI_WORDS] = { HCI_SET, HCI_ECO_MODE, 0, 1, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     /* Switch the Eco Mode led on/off */
     in[2] = (brightness) ? 1 : 0;
     status = tci_raw(dev, in, out);
     if (ACPI_FAILURE(status))
         pr_err("ACPI call to set ECO led failed\n");
 }
 
 /* Accelerometer support */
 static void toshiba_accelerometer_available(struct toshiba_acpi_dev *dev)
 {
     u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER2, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     dev->accelerometer_supported = 0;
 
     /*
      * Check if the accelerometer call exists,
      * this call also serves as initialization
      */
     status = tci_raw(dev, in, out);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to query the accelerometer failed\n");
         return;
     }
 
     if (out[0] != TOS_SUCCESS)
         return;
 
     dev->accelerometer_supported = 1;
 }
 
 static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev,
                      u32 *xy, u32 *z)
 {
     u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER, 0, 1, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     /* Check the Accelerometer status */
     status = tci_raw(dev, in, out);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to query the accelerometer failed\n");
         return -EIO;
     }
 
     if (out[0] == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     if (out[0] != TOS_SUCCESS)
         return -EIO;
 
     *xy = out[2];
     *z = out[4];
 
     return 0;
 }
 
 /* Sleep (Charge and Music) utilities support */
 static void toshiba_usb_sleep_charge_available(struct toshiba_acpi_dev *dev)
 {
     u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     dev->usb_sleep_charge_supported = 0;
 
     if (!sci_open(dev))
         return;
 
     status = tci_raw(dev, in, out);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to get USB Sleep and Charge mode failed\n");
         sci_close(dev);
         return;
     }
 
     if (out[0] != TOS_SUCCESS) {
         sci_close(dev);
         return;
     }
 
     dev->usbsc_mode_base = out[4];
 
     in[5] = SCI_USB_CHARGE_BAT_LVL;
     status = tci_raw(dev, in, out);
     sci_close(dev);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to get USB Sleep and Charge mode failed\n");
         return;
     }
 
     if (out[0] != TOS_SUCCESS)
         return;
 
     dev->usbsc_bat_level = out[2];
     /* Flag as supported */
     dev->usb_sleep_charge_supported = 1;
 }
 
 static int toshiba_usb_sleep_charge_get(struct toshiba_acpi_dev *dev,
                     u32 *mode)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_read(dev, SCI_USB_SLEEP_CHARGE, mode);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to set USB S&C mode failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_usb_sleep_charge_set(struct toshiba_acpi_dev *dev,
                     u32 mode)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_write(dev, SCI_USB_SLEEP_CHARGE, mode);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to set USB S&C mode failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_sleep_functions_status_get(struct toshiba_acpi_dev *dev,
                           u32 *mode)
 {
     u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     if (!sci_open(dev))
         return -EIO;
 
     in[5] = SCI_USB_CHARGE_BAT_LVL;
     status = tci_raw(dev, in, out);
     sci_close(dev);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to get USB S&C battery level failed\n");
         return -EIO;
     }
 
     if (out[0] == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     if (out[0] != TOS_SUCCESS)
         return -EIO;
 
     *mode = out[2];
 
     return 0;
 
 }
 
 static int toshiba_sleep_functions_status_set(struct toshiba_acpi_dev *dev,
                           u32 mode)
 {
     u32 in[TCI_WORDS] = { SCI_SET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     if (!sci_open(dev))
         return -EIO;
 
     in[2] = mode;
     in[5] = SCI_USB_CHARGE_BAT_LVL;
     status = tci_raw(dev, in, out);
     sci_close(dev);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to set USB S&C battery level failed\n");
         return -EIO;
     }
 
     if (out[0] == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return out[0] == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_usb_rapid_charge_get(struct toshiba_acpi_dev *dev,
                     u32 *state)
 {
     u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     if (!sci_open(dev))
         return -EIO;
 
     in[5] = SCI_USB_CHARGE_RAPID_DSP;
     status = tci_raw(dev, in, out);
     sci_close(dev);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to get USB Rapid Charge failed\n");
         return -EIO;
     }
 
     if (out[0] == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     if (out[0] != TOS_SUCCESS && out[0] != TOS_SUCCESS2)
         return -EIO;
 
     *state = out[2];
 
     return 0;
 }
 
 static int toshiba_usb_rapid_charge_set(struct toshiba_acpi_dev *dev,
                     u32 state)
 {
     u32 in[TCI_WORDS] = { SCI_SET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     if (!sci_open(dev))
         return -EIO;
 
     in[2] = state;
     in[5] = SCI_USB_CHARGE_RAPID_DSP;
     status = tci_raw(dev, in, out);
     sci_close(dev);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to set USB Rapid Charge failed\n");
         return -EIO;
     }
 
     if (out[0] == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return (out[0] == TOS_SUCCESS || out[0] == TOS_SUCCESS2) ? 0 : -EIO;
 }
 
 static int toshiba_usb_sleep_music_get(struct toshiba_acpi_dev *dev, u32 *state)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_read(dev, SCI_USB_SLEEP_MUSIC, state);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to get Sleep and Music failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_usb_sleep_music_set(struct toshiba_acpi_dev *dev, u32 state)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_write(dev, SCI_USB_SLEEP_MUSIC, state);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to set Sleep and Music failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 /* Keyboard function keys */
 static int toshiba_function_keys_get(struct toshiba_acpi_dev *dev, u32 *mode)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_read(dev, SCI_KBD_FUNCTION_KEYS, mode);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to get KBD function keys failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
 }
 
 static int toshiba_function_keys_set(struct toshiba_acpi_dev *dev, u32 mode)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_write(dev, SCI_KBD_FUNCTION_KEYS, mode);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to set KBD function keys failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
 }
 
 /* Panel Power ON */
 static int toshiba_panel_power_on_get(struct toshiba_acpi_dev *dev, u32 *state)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_read(dev, SCI_PANEL_POWER_ON, state);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to get Panel Power ON failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_panel_power_on_set(struct toshiba_acpi_dev *dev, u32 state)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_write(dev, SCI_PANEL_POWER_ON, state);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to set Panel Power ON failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 /* USB Three */
 static int toshiba_usb_three_get(struct toshiba_acpi_dev *dev, u32 *state)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_read(dev, SCI_USB_THREE, state);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to get USB 3 failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
 }
 
 static int toshiba_usb_three_set(struct toshiba_acpi_dev *dev, u32 state)
 {
     u32 result;
 
     if (!sci_open(dev))
         return -EIO;
 
     result = sci_write(dev, SCI_USB_THREE, state);
     sci_close(dev);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to set USB 3 failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
 }
 
 /* Hotkey Event type */
 static int toshiba_hotkey_event_type_get(struct toshiba_acpi_dev *dev,
                      u32 *type)
 {
     u32 in[TCI_WORDS] = { HCI_GET, HCI_SYSTEM_INFO, 0x03, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     status = tci_raw(dev, in, out);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to get System type failed\n");
         return -EIO;
     }
 
     if (out[0] == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     if (out[0] != TOS_SUCCESS)
         return -EIO;
 
     *type = out[3];
 
     return 0;
 }
 
 /* Wireless status (RFKill, WLAN, BT, WWAN) */
 static int toshiba_wireless_status(struct toshiba_acpi_dev *dev)
 {
     u32 in[TCI_WORDS] = { HCI_GET, HCI_WIRELESS, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     in[3] = HCI_WIRELESS_STATUS;
     status = tci_raw(dev, in, out);
 
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to get Wireless status failed\n");
         return -EIO;
     }
 
     if (out[0] == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     if (out[0] != TOS_SUCCESS)
         return -EIO;
 
     dev->killswitch = !!(out[2] & HCI_WIRELESS_STATUS);
 
     return 0;
 }
 
 /* WWAN */
 static void toshiba_wwan_available(struct toshiba_acpi_dev *dev)
 {
     u32 in[TCI_WORDS] = { HCI_GET, HCI_WIRELESS, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     dev->wwan_supported = 0;
 
     /*
      * WWAN support can be queried by setting the in[3] value to
      * HCI_WIRELESS_WWAN (0x03).
      *
      * If supported, out[0] contains TOS_SUCCESS and out[2] contains
      * HCI_WIRELESS_WWAN_STATUS (0x2000).
      *
      * If not supported, out[0] contains TOS_INPUT_DATA_ERROR (0x8300)
      * or TOS_NOT_SUPPORTED (0x8000).
      */
     in[3] = HCI_WIRELESS_WWAN;
     status = tci_raw(dev, in, out);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to get WWAN status failed\n");
         return;
     }
 
     if (out[0] != TOS_SUCCESS)
         return;
 
     dev->wwan_supported = (out[2] == HCI_WIRELESS_WWAN_STATUS);
 }
 
 static int toshiba_wwan_set(struct toshiba_acpi_dev *dev, u32 state)
 {
     u32 in[TCI_WORDS] = { HCI_SET, HCI_WIRELESS, state, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     in[3] = HCI_WIRELESS_WWAN_STATUS;
     status = tci_raw(dev, in, out);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to set WWAN status failed\n");
         return -EIO;
     }
 
     if (out[0] == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     if (out[0] != TOS_SUCCESS)
         return -EIO;
 
     /*
      * Some devices only need to call HCI_WIRELESS_WWAN_STATUS to
      * (de)activate the device, but some others need the
      * HCI_WIRELESS_WWAN_POWER call as well.
      */
     in[3] = HCI_WIRELESS_WWAN_POWER;
     status = tci_raw(dev, in, out);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to set WWAN power failed\n");
         return -EIO;
     }
 
     if (out[0] == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return out[0] == TOS_SUCCESS ? 0 : -EIO;
 }
 
 /* Cooling Method */
 static void toshiba_cooling_method_available(struct toshiba_acpi_dev *dev)
 {
     u32 in[TCI_WORDS] = { HCI_GET, HCI_COOLING_METHOD, 0, 0, 0, 0 };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     dev->cooling_method_supported = 0;
     dev->max_cooling_method = 0;
 
     status = tci_raw(dev, in, out);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to get Cooling Method failed\n");
         return;
     }
 
     if (out[0] != TOS_SUCCESS && out[0] != TOS_SUCCESS2)
         return;
 
     dev->cooling_method_supported = 1;
     dev->max_cooling_method = out[3];
 }
 
 static int toshiba_cooling_method_get(struct toshiba_acpi_dev *dev, u32 *state)
 {
     u32 result = hci_read(dev, HCI_COOLING_METHOD, state);
 
     if (result == TOS_FAILURE)
         pr_err("ACPI call to get Cooling Method failed\n");
 
     if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
 }
 
 static int toshiba_cooling_method_set(struct toshiba_acpi_dev *dev, u32 state)
 {
     u32 result = hci_write(dev, HCI_COOLING_METHOD, state);
 
     if (result == TOS_FAILURE)
         pr_err("ACPI call to set Cooling Method failed\n");
 
     if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
 }
 
 /* Transflective Backlight */
 static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, u32 *status)
 {
     u32 result = hci_read(dev, HCI_TR_BACKLIGHT, status);
 
     if (result == TOS_FAILURE)
         pr_err("ACPI call to get Transflective Backlight failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, u32 status)
 {
     u32 result = hci_write(dev, HCI_TR_BACKLIGHT, !status);
 
     if (result == TOS_FAILURE)
         pr_err("ACPI call to set Transflective Backlight failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static struct proc_dir_entry *toshiba_proc_dir;
 
 /* LCD Brightness */
 static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
 {
     int brightness = 0;
     u32 result;
     u32 value;
 
     if (dev->tr_backlight_supported) {
         int ret = get_tr_backlight_status(dev, &value);
 
         if (ret)
             return ret;
         if (value)
             return 0;
         brightness++;
     }
 
     result = hci_read(dev, HCI_LCD_BRIGHTNESS, &value);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to get LCD Brightness failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ?
             brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT) :
             -EIO;
 }
 
 static int get_lcd_brightness(struct backlight_device *bd)
 {
     struct toshiba_acpi_dev *dev = bl_get_data(bd);
 
     return __get_lcd_brightness(dev);
 }
 
 static int lcd_proc_show(struct seq_file *m, void *v)
 {
     struct toshiba_acpi_dev *dev = m->private;
     int levels;
     int value;
 
     if (!dev->backlight_dev)
         return -ENODEV;
 
     levels = dev->backlight_dev->props.max_brightness + 1;
     value = get_lcd_brightness(dev->backlight_dev);
     if (value < 0) {
         pr_err("Error reading LCD brightness\n");
         return value;
     }
 
     seq_printf(m, "brightness:              %d\n", value);
     seq_printf(m, "brightness_levels:       %d\n", levels);
 
     return 0;
 }
 
 static int lcd_proc_open(struct inode *inode, struct file *file)
 {
     return single_open(file, lcd_proc_show, pde_data(inode));
 }
 
 static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
 {
     u32 result;
 
     if (dev->tr_backlight_supported) {
         int ret = set_tr_backlight_status(dev, !value);
 
         if (ret)
             return ret;
         if (value)
             value--;
     }
 
     value = value << HCI_LCD_BRIGHTNESS_SHIFT;
     result = hci_write(dev, HCI_LCD_BRIGHTNESS, value);
     if (result == TOS_FAILURE)
         pr_err("ACPI call to set LCD Brightness failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int set_lcd_status(struct backlight_device *bd)
 {
     struct toshiba_acpi_dev *dev = bl_get_data(bd);
 
     return set_lcd_brightness(dev, bd->props.brightness);
 }
 
 static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
                   size_t count, loff_t *pos)
 {
     struct toshiba_acpi_dev *dev = pde_data(file_inode(file));
     char cmd[42];
     size_t len;
     int levels;
     int value;
 
     len = min(count, sizeof(cmd) - 1);
     if (copy_from_user(cmd, buf, len))
         return -EFAULT;
     cmd[len] = '\0';
 
     levels = dev->backlight_dev->props.max_brightness + 1;
     if (sscanf(cmd, " brightness : %i", &value) != 1 &&
         value < 0 && value > levels)
         return -EINVAL;
 
     if (set_lcd_brightness(dev, value))
         return -EIO;
 
     return count;
 }
 
 static const struct proc_ops lcd_proc_ops = {
     .proc_open  = lcd_proc_open,
     .proc_read  = seq_read,
     .proc_lseek = seq_lseek,
     .proc_release   = single_release,
     .proc_write = lcd_proc_write,
 };
 
 /* Video-Out */
 static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
 {
     u32 result = hci_read(dev, HCI_VIDEO_OUT, status);
 
     if (result == TOS_FAILURE)
         pr_err("ACPI call to get Video-Out failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int video_proc_show(struct seq_file *m, void *v)
 {
     struct toshiba_acpi_dev *dev = m->private;
     int is_lcd, is_crt, is_tv;
     u32 value;
 
     if (get_video_status(dev, &value))
         return -EIO;
 
     is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
     is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
     is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
 
     seq_printf(m, "lcd_out:                 %d\n", is_lcd);
     seq_printf(m, "crt_out:                 %d\n", is_crt);
     seq_printf(m, "tv_out:                  %d\n", is_tv);
 
     return 0;
 }
 
 static int video_proc_open(struct inode *inode, struct file *file)
 {
     return single_open(file, video_proc_show, pde_data(inode));
 }
 
 static ssize_t video_proc_write(struct file *file, const char __user *buf,
                 size_t count, loff_t *pos)
 {
     struct toshiba_acpi_dev *dev = pde_data(file_inode(file));
     char *buffer;
     char *cmd;
     int lcd_out = -1, crt_out = -1, tv_out = -1;
     int remain = count;
     int value;
     int ret;
     u32 video_out;
 
     cmd = memdup_user_nul(buf, count);
     if (IS_ERR(cmd))
         return PTR_ERR(cmd);
 
     buffer = cmd;
 
     /*
      * Scan expression.  Multiple expressions may be delimited with ;
      * NOTE: To keep scanning simple, invalid fields are ignored.
      */
     while (remain) {
         if (sscanf(buffer, " lcd_out : %i", &value) == 1)
             lcd_out = value & 1;
         else if (sscanf(buffer, " crt_out : %i", &value) == 1)
             crt_out = value & 1;
         else if (sscanf(buffer, " tv_out : %i", &value) == 1)
             tv_out = value & 1;
         /* Advance to one character past the next ; */
         do {
             ++buffer;
             --remain;
         } while (remain && *(buffer - 1) != ';');
     }
 
     kfree(cmd);
 
     ret = get_video_status(dev, &video_out);
     if (!ret) {
         unsigned int new_video_out = video_out;
 
         if (lcd_out != -1)
             _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
         if (crt_out != -1)
             _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
         if (tv_out != -1)
             _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
         /*
          * To avoid unnecessary video disruption, only write the new
          * video setting if something changed.
          */
         if (new_video_out != video_out)
             ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
     }
 
     return ret ? -EIO : count;
 }
 
 static const struct proc_ops video_proc_ops = {
     .proc_open  = video_proc_open,
     .proc_read  = seq_read,
     .proc_lseek = seq_lseek,
     .proc_release   = single_release,
     .proc_write = video_proc_write,
 };
 
 /* Fan status */
 static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
 {
     u32 result = hci_read(dev, HCI_FAN, status);
 
     if (result == TOS_FAILURE)
         pr_err("ACPI call to get Fan status failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int set_fan_status(struct toshiba_acpi_dev *dev, u32 status)
 {
     u32 result = hci_write(dev, HCI_FAN, status);
 
     if (result == TOS_FAILURE)
         pr_err("ACPI call to set Fan status failed\n");
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int fan_proc_show(struct seq_file *m, void *v)
 {
     struct toshiba_acpi_dev *dev = m->private;
     u32 value;
 
     if (get_fan_status(dev, &value))
         return -EIO;
 
     seq_printf(m, "running:                 %d\n", (value > 0));
     seq_printf(m, "force_on:                %d\n", dev->force_fan);
 
     return 0;
 }
 
 static int fan_proc_open(struct inode *inode, struct file *file)
 {
     return single_open(file, fan_proc_show, pde_data(inode));
 }
 
 static ssize_t fan_proc_write(struct file *file, const char __user *buf,
                   size_t count, loff_t *pos)
 {
     struct toshiba_acpi_dev *dev = pde_data(file_inode(file));
     char cmd[42];
     size_t len;
     int value;
 
     len = min(count, sizeof(cmd) - 1);
     if (copy_from_user(cmd, buf, len))
         return -EFAULT;
     cmd[len] = '\0';
 
     if (sscanf(cmd, " force_on : %i", &value) != 1 &&
         value != 0 && value != 1)
         return -EINVAL;
 
     if (set_fan_status(dev, value))
         return -EIO;
 
     dev->force_fan = value;
 
     return count;
 }
 
 static const struct proc_ops fan_proc_ops = {
     .proc_open  = fan_proc_open,
     .proc_read  = seq_read,
     .proc_lseek = seq_lseek,
     .proc_release   = single_release,
     .proc_write = fan_proc_write,
 };
 
 static int keys_proc_show(struct seq_file *m, void *v)
 {
     struct toshiba_acpi_dev *dev = m->private;
 
     seq_printf(m, "hotkey_ready:            %d\n", dev->key_event_valid);
     seq_printf(m, "hotkey:                  0x%04x\n", dev->last_key_event);
 
     return 0;
 }
 
 static int keys_proc_open(struct inode *inode, struct file *file)
 {
     return single_open(file, keys_proc_show, pde_data(inode));
 }
 
 static ssize_t keys_proc_write(struct file *file, const char __user *buf,
                    size_t count, loff_t *pos)
 {
     struct toshiba_acpi_dev *dev = pde_data(file_inode(file));
     char cmd[42];
     size_t len;
     int value;
 
     len = min(count, sizeof(cmd) - 1);
     if (copy_from_user(cmd, buf, len))
         return -EFAULT;
     cmd[len] = '\0';
 
     if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0)
         dev->key_event_valid = 0;
     else
         return -EINVAL;
 
     return count;
 }
 
 static const struct proc_ops keys_proc_ops = {
     .proc_open  = keys_proc_open,
     .proc_read  = seq_read,
     .proc_lseek = seq_lseek,
     .proc_release   = single_release,
     .proc_write = keys_proc_write,
 };
 
 static int __maybe_unused version_proc_show(struct seq_file *m, void *v)
 {
     seq_printf(m, "driver:                  %s\n", TOSHIBA_ACPI_VERSION);
     seq_printf(m, "proc_interface:          %d\n", PROC_INTERFACE_VERSION);
     return 0;
 }
 
 /*
  * Proc and module init
  */
 
 #define PROC_TOSHIBA        "toshiba"
 
 static void create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
 {
     if (dev->backlight_dev)
         proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
                  &lcd_proc_ops, dev);
     if (dev->video_supported)
         proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
                  &video_proc_ops, dev);
     if (dev->fan_supported)
         proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
                  &fan_proc_ops, dev);
     if (dev->hotkey_dev)
         proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
                  &keys_proc_ops, dev);
     proc_create_single_data("version", S_IRUGO, toshiba_proc_dir,
             version_proc_show, dev);
 }
 
 static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
 {
     if (dev->backlight_dev)
         remove_proc_entry("lcd", toshiba_proc_dir);
     if (dev->video_supported)
         remove_proc_entry("video", toshiba_proc_dir);
     if (dev->fan_supported)
         remove_proc_entry("fan", toshiba_proc_dir);
     if (dev->hotkey_dev)
         remove_proc_entry("keys", toshiba_proc_dir);
     remove_proc_entry("version", toshiba_proc_dir);
 }
 
 static const struct backlight_ops toshiba_backlight_data = {
     .options = BL_CORE_SUSPENDRESUME,
     .get_brightness = get_lcd_brightness,
     .update_status  = set_lcd_status,
 };
 
 /* Keyboard backlight work */
 static void toshiba_acpi_kbd_bl_work(struct work_struct *work);
 
 static DECLARE_WORK(kbd_bl_work, toshiba_acpi_kbd_bl_work);
 
 /*
  * Sysfs files
  */
 static ssize_t version_show(struct device *dev,
                 struct device_attribute *attr, char *buf)
 {
     return sprintf(buf, "%s\n", TOSHIBA_ACPI_VERSION);
 }
 static DEVICE_ATTR_RO(version);
 
 static ssize_t fan_store(struct device *dev,
              struct device_attribute *attr,
              const char *buf, size_t count)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int state;
     int ret;
 
     ret = kstrtoint(buf, 0, &state);
     if (ret)
         return ret;
 
     if (state != 0 && state != 1)
         return -EINVAL;
 
     ret = set_fan_status(toshiba, state);
     if (ret)
         return ret;
 
     return count;
 }
 
 static ssize_t fan_show(struct device *dev,
             struct device_attribute *attr, char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     u32 value;
     int ret;
 
     ret = get_fan_status(toshiba, &value);
     if (ret)
         return ret;
 
     return sprintf(buf, "%d\n", value);
 }
 static DEVICE_ATTR_RW(fan);
 
 static ssize_t kbd_backlight_mode_store(struct device *dev,
                     struct device_attribute *attr,
                     const char *buf, size_t count)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int mode;
     int ret;
 
 
     ret = kstrtoint(buf, 0, &mode);
     if (ret)
         return ret;
 
     /* Check for supported modes depending on keyboard backlight type */
     if (toshiba->kbd_type == 1) {
         /* Type 1 supports SCI_KBD_MODE_FNZ and SCI_KBD_MODE_AUTO */
         if (mode != SCI_KBD_MODE_FNZ && mode != SCI_KBD_MODE_AUTO)
             return -EINVAL;
     } else if (toshiba->kbd_type == 2) {
         /* Type 2 doesn't support SCI_KBD_MODE_FNZ */
         if (mode != SCI_KBD_MODE_AUTO && mode != SCI_KBD_MODE_ON &&
             mode != SCI_KBD_MODE_OFF)
             return -EINVAL;
     }
 
     /*
      * Set the Keyboard Backlight Mode where:
      *  Auto - KBD backlight turns off automatically in given time
      *  FN-Z - KBD backlight "toggles" when hotkey pressed
      *  ON   - KBD backlight is always on
      *  OFF  - KBD backlight is always off
      */
 
     /* Only make a change if the actual mode has changed */
     if (toshiba->kbd_mode != mode) {
         /* Shift the time to "base time" (0x3c0000 == 60 seconds) */
         int time = toshiba->kbd_time << HCI_MISC_SHIFT;
 
         /* OR the "base time" to the actual method format */
         if (toshiba->kbd_type == 1) {
             /* Type 1 requires the current mode */
             time |= toshiba->kbd_mode;
         } else if (toshiba->kbd_type == 2) {
             /* Type 2 requires the desired mode */
             time |= mode;
         }
 
         ret = toshiba_kbd_illum_status_set(toshiba, time);
         if (ret)
             return ret;
 
         toshiba->kbd_mode = mode;
         toshiba_acpi->kbd_mode = mode;
 
         /*
          * Some laptop models with the second generation backlit
          * keyboard (type 2) do not generate the keyboard backlight
          * changed event (0x92), and thus, the driver will never update
          * the sysfs entries.
          *
          * The event is generated right when changing the keyboard
          * backlight mode and the *notify function will set the
          * kbd_event_generated to true.
          *
          * In case the event is not generated, schedule the keyboard
          * backlight work to update the sysfs entries and emulate the
          * event via genetlink.
          */
         if (toshiba->kbd_type == 2 &&
             !toshiba->kbd_event_generated)
             schedule_work(&kbd_bl_work);
     }
 
     return count;
 }
 
 static ssize_t kbd_backlight_mode_show(struct device *dev,
                        struct device_attribute *attr,
                        char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     u32 time;
 
     if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
         return -EIO;
 
     return sprintf(buf, "%i\n", time & SCI_KBD_MODE_MASK);
 }
 static DEVICE_ATTR_RW(kbd_backlight_mode);
 
 static ssize_t kbd_type_show(struct device *dev,
                  struct device_attribute *attr, char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
 
     return sprintf(buf, "%d\n", toshiba->kbd_type);
 }
 static DEVICE_ATTR_RO(kbd_type);
 
 static ssize_t available_kbd_modes_show(struct device *dev,
                     struct device_attribute *attr,
                     char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
 
     if (toshiba->kbd_type == 1)
         return sprintf(buf, "0x%x 0x%x\n",
                    SCI_KBD_MODE_FNZ, SCI_KBD_MODE_AUTO);
 
     return sprintf(buf, "0x%x 0x%x 0x%x\n",
                SCI_KBD_MODE_AUTO, SCI_KBD_MODE_ON, SCI_KBD_MODE_OFF);
 }
 static DEVICE_ATTR_RO(available_kbd_modes);
 
 static ssize_t kbd_backlight_timeout_store(struct device *dev,
                        struct device_attribute *attr,
                        const char *buf, size_t count)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int time;
     int ret;
 
     ret = kstrtoint(buf, 0, &time);
     if (ret)
         return ret;
 
     /* Check for supported values depending on kbd_type */
     if (toshiba->kbd_type == 1) {
         if (time < 0 || time > 60)
             return -EINVAL;
     } else if (toshiba->kbd_type == 2) {
         if (time < 1 || time > 60)
             return -EINVAL;
     }
 
     /* Set the Keyboard Backlight Timeout */
 
     /* Only make a change if the actual timeout has changed */
     if (toshiba->kbd_time != time) {
         /* Shift the time to "base time" (0x3c0000 == 60 seconds) */
         time = time << HCI_MISC_SHIFT;
         /* OR the "base time" to the actual method format */
         if (toshiba->kbd_type == 1)
             time |= SCI_KBD_MODE_FNZ;
         else if (toshiba->kbd_type == 2)
             time |= SCI_KBD_MODE_AUTO;
 
         ret = toshiba_kbd_illum_status_set(toshiba, time);
         if (ret)
             return ret;
 
         toshiba->kbd_time = time >> HCI_MISC_SHIFT;
     }
 
     return count;
 }
 
 static ssize_t kbd_backlight_timeout_show(struct device *dev,
                       struct device_attribute *attr,
                       char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     u32 time;
 
     if (toshiba_kbd_illum_status_get(toshiba, &time) < 0)
         return -EIO;
 
     return sprintf(buf, "%i\n", time >> HCI_MISC_SHIFT);
 }
 static DEVICE_ATTR_RW(kbd_backlight_timeout);
 
 static ssize_t touchpad_store(struct device *dev,
                   struct device_attribute *attr,
                   const char *buf, size_t count)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int state;
     int ret;
 
     /* Set the TouchPad on/off, 0 - Disable | 1 - Enable */
     ret = kstrtoint(buf, 0, &state);
     if (ret)
         return ret;
     if (state != 0 && state != 1)
         return -EINVAL;
 
     ret = toshiba_touchpad_set(toshiba, state);
     if (ret)
         return ret;
 
     return count;
 }
 
 static ssize_t touchpad_show(struct device *dev,
                  struct device_attribute *attr, char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     u32 state;
     int ret;
 
     ret = toshiba_touchpad_get(toshiba, &state);
     if (ret < 0)
         return ret;
 
     return sprintf(buf, "%i\n", state);
 }
 static DEVICE_ATTR_RW(touchpad);
 
 static ssize_t usb_sleep_charge_show(struct device *dev,
                      struct device_attribute *attr, char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     u32 mode;
     int ret;
 
     ret = toshiba_usb_sleep_charge_get(toshiba, &mode);
     if (ret < 0)
         return ret;
 
     return sprintf(buf, "%x\n", mode & SCI_USB_CHARGE_MODE_MASK);
 }
 
 static ssize_t usb_sleep_charge_store(struct device *dev,
                       struct device_attribute *attr,
                       const char *buf, size_t count)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int state;
     u32 mode;
     int ret;
 
     ret = kstrtoint(buf, 0, &state);
     if (ret)
         return ret;
     /*
      * Check for supported values, where:
      * 0 - Disabled
      * 1 - Alternate (Non USB conformant devices that require more power)
      * 2 - Auto (USB conformant devices)
      * 3 - Typical
      */
     if (state != 0 && state != 1 && state != 2 && state != 3)
         return -EINVAL;
 
     /* Set the USB charging mode to internal value */
     mode = toshiba->usbsc_mode_base;
     if (state == 0)
         mode |= SCI_USB_CHARGE_DISABLED;
     else if (state == 1)
         mode |= SCI_USB_CHARGE_ALTERNATE;
     else if (state == 2)
         mode |= SCI_USB_CHARGE_AUTO;
     else if (state == 3)
         mode |= SCI_USB_CHARGE_TYPICAL;
 
     ret = toshiba_usb_sleep_charge_set(toshiba, mode);
     if (ret)
         return ret;
 
     return count;
 }
 static DEVICE_ATTR_RW(usb_sleep_charge);
 
 static ssize_t sleep_functions_on_battery_show(struct device *dev,
                            struct device_attribute *attr,
                            char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int bat_lvl, status;
     u32 state;
     int ret;
     int tmp;
 
     ret = toshiba_sleep_functions_status_get(toshiba, &state);
     if (ret < 0)
         return ret;
 
     /* Determine the status: 0x4 - Enabled | 0x1 - Disabled */
     tmp = state & SCI_USB_CHARGE_BAT_MASK;
     status = (tmp == 0x4) ? 1 : 0;
     /* Determine the battery level set */
     bat_lvl = state >> HCI_MISC_SHIFT;
 
     return sprintf(buf, "%d %d\n", status, bat_lvl);
 }
 
 static ssize_t sleep_functions_on_battery_store(struct device *dev,
                         struct device_attribute *attr,
                         const char *buf, size_t count)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     u32 status;
     int value;
     int ret;
     int tmp;
 
     ret = kstrtoint(buf, 0, &value);
     if (ret)
         return ret;
 
     /*
      * Set the status of the function:
      * 0 - Disabled
      * 1-100 - Enabled
      */
     if (value < 0 || value > 100)
         return -EINVAL;
 
     if (value == 0) {
         tmp = toshiba->usbsc_bat_level << HCI_MISC_SHIFT;
         status = tmp | SCI_USB_CHARGE_BAT_LVL_OFF;
     } else {
         tmp = value << HCI_MISC_SHIFT;
         status = tmp | SCI_USB_CHARGE_BAT_LVL_ON;
     }
     ret = toshiba_sleep_functions_status_set(toshiba, status);
     if (ret < 0)
         return ret;
 
     toshiba->usbsc_bat_level = status >> HCI_MISC_SHIFT;
 
     return count;
 }
 static DEVICE_ATTR_RW(sleep_functions_on_battery);
 
 static ssize_t usb_rapid_charge_show(struct device *dev,
                      struct device_attribute *attr, char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     u32 state;
     int ret;
 
     ret = toshiba_usb_rapid_charge_get(toshiba, &state);
     if (ret < 0)
         return ret;
 
     return sprintf(buf, "%d\n", state);
 }
 
 static ssize_t usb_rapid_charge_store(struct device *dev,
                       struct device_attribute *attr,
                       const char *buf, size_t count)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int state;
     int ret;
 
     ret = kstrtoint(buf, 0, &state);
     if (ret)
         return ret;
     if (state != 0 && state != 1)
         return -EINVAL;
 
     ret = toshiba_usb_rapid_charge_set(toshiba, state);
     if (ret)
         return ret;
 
     return count;
 }
 static DEVICE_ATTR_RW(usb_rapid_charge);
 
 static ssize_t usb_sleep_music_show(struct device *dev,
                     struct device_attribute *attr, char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     u32 state;
     int ret;
 
     ret = toshiba_usb_sleep_music_get(toshiba, &state);
     if (ret < 0)
         return ret;
 
     return sprintf(buf, "%d\n", state);
 }
 
 static ssize_t usb_sleep_music_store(struct device *dev,
                      struct device_attribute *attr,
                      const char *buf, size_t count)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int state;
     int ret;
 
     ret = kstrtoint(buf, 0, &state);
     if (ret)
         return ret;
     if (state != 0 && state != 1)
         return -EINVAL;
 
     ret = toshiba_usb_sleep_music_set(toshiba, state);
     if (ret)
         return ret;
 
     return count;
 }
 static DEVICE_ATTR_RW(usb_sleep_music);
 
 static ssize_t kbd_function_keys_show(struct device *dev,
                       struct device_attribute *attr, char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int mode;
     int ret;
 
     ret = toshiba_function_keys_get(toshiba, &mode);
     if (ret < 0)
         return ret;
 
     return sprintf(buf, "%d\n", mode);
 }
 
 static ssize_t kbd_function_keys_store(struct device *dev,
                        struct device_attribute *attr,
                        const char *buf, size_t count)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int mode;
     int ret;
 
     ret = kstrtoint(buf, 0, &mode);
     if (ret)
         return ret;
     /*
      * Check for the function keys mode where:
      * 0 - Normal operation (F{1-12} as usual and hotkeys via FN-F{1-12})
      * 1 - Special functions (Opposite of the above setting)
      */
     if (mode != 0 && mode != 1)
         return -EINVAL;
 
     ret = toshiba_function_keys_set(toshiba, mode);
     if (ret)
         return ret;
 
     pr_info("Reboot for changes to KBD Function Keys to take effect");
 
     return count;
 }
 static DEVICE_ATTR_RW(kbd_function_keys);
 
 static ssize_t panel_power_on_show(struct device *dev,
                    struct device_attribute *attr, char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     u32 state;
     int ret;
 
     ret = toshiba_panel_power_on_get(toshiba, &state);
     if (ret < 0)
         return ret;
 
     return sprintf(buf, "%d\n", state);
 }
 
 static ssize_t panel_power_on_store(struct device *dev,
                     struct device_attribute *attr,
                     const char *buf, size_t count)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int state;
     int ret;
 
     ret = kstrtoint(buf, 0, &state);
     if (ret)
         return ret;
     if (state != 0 && state != 1)
         return -EINVAL;
 
     ret = toshiba_panel_power_on_set(toshiba, state);
     if (ret)
         return ret;
 
     pr_info("Reboot for changes to Panel Power ON to take effect");
 
     return count;
 }
 static DEVICE_ATTR_RW(panel_power_on);
 
 static ssize_t usb_three_show(struct device *dev,
                   struct device_attribute *attr, char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     u32 state;
     int ret;
 
     ret = toshiba_usb_three_get(toshiba, &state);
     if (ret < 0)
         return ret;
 
     return sprintf(buf, "%d\n", state);
 }
 
 static ssize_t usb_three_store(struct device *dev,
                    struct device_attribute *attr,
                    const char *buf, size_t count)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int state;
     int ret;
 
     ret = kstrtoint(buf, 0, &state);
     if (ret)
         return ret;
     /*
      * Check for USB 3 mode where:
      * 0 - Disabled (Acts like a USB 2 port, saving power)
      * 1 - Enabled
      */
     if (state != 0 && state != 1)
         return -EINVAL;
 
     ret = toshiba_usb_three_set(toshiba, state);
     if (ret)
         return ret;
 
     pr_info("Reboot for changes to USB 3 to take effect");
 
     return count;
 }
 static DEVICE_ATTR_RW(usb_three);
 
 static ssize_t cooling_method_show(struct device *dev,
                    struct device_attribute *attr, char *buf)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int state;
     int ret;
 
     ret = toshiba_cooling_method_get(toshiba, &state);
     if (ret < 0)
         return ret;
 
     return sprintf(buf, "%d %d\n", state, toshiba->max_cooling_method);
 }
 
 static ssize_t cooling_method_store(struct device *dev,
                     struct device_attribute *attr,
                     const char *buf, size_t count)
 {
     struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
     int state;
     int ret;
 
     ret = kstrtoint(buf, 0, &state);
     if (ret)
         return ret;
 
     /*
      * Check for supported values
      * Depending on the laptop model, some only support these two:
      * 0 - Maximum Performance
      * 1 - Battery Optimized
      *
      * While some others support all three methods:
      * 0 - Maximum Performance
      * 1 - Performance
      * 2 - Battery Optimized
      */
     if (state < 0 || state > toshiba->max_cooling_method)
         return -EINVAL;
 
     ret = toshiba_cooling_method_set(toshiba, state);
     if (ret)
         return ret;
 
     return count;
 }
 static DEVICE_ATTR_RW(cooling_method);
 
 static struct attribute *toshiba_attributes[] = {
     &dev_attr_version.attr,
     &dev_attr_fan.attr,
     &dev_attr_kbd_backlight_mode.attr,
     &dev_attr_kbd_type.attr,
     &dev_attr_available_kbd_modes.attr,
     &dev_attr_kbd_backlight_timeout.attr,
     &dev_attr_touchpad.attr,
     &dev_attr_usb_sleep_charge.attr,
     &dev_attr_sleep_functions_on_battery.attr,
     &dev_attr_usb_rapid_charge.attr,
     &dev_attr_usb_sleep_music.attr,
     &dev_attr_kbd_function_keys.attr,
     &dev_attr_panel_power_on.attr,
     &dev_attr_usb_three.attr,
     &dev_attr_cooling_method.attr,
     NULL,
 };
 
 static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
                     struct attribute *attr, int idx)
 {
     struct device *dev = kobj_to_dev(kobj);
     struct toshiba_acpi_dev *drv = dev_get_drvdata(dev);
     bool exists = true;
 
     if (attr == &dev_attr_fan.attr)
         exists = (drv->fan_supported) ? true : false;
     else if (attr == &dev_attr_kbd_backlight_mode.attr)
         exists = (drv->kbd_illum_supported) ? true : false;
     else if (attr == &dev_attr_kbd_backlight_timeout.attr)
         exists = (drv->kbd_mode == SCI_KBD_MODE_AUTO) ? true : false;
     else if (attr == &dev_attr_touchpad.attr)
         exists = (drv->touchpad_supported) ? true : false;
     else if (attr == &dev_attr_usb_sleep_charge.attr)
         exists = (drv->usb_sleep_charge_supported) ? true : false;
     else if (attr == &dev_attr_sleep_functions_on_battery.attr)
         exists = (drv->usb_sleep_charge_supported) ? true : false;
     else if (attr == &dev_attr_usb_rapid_charge.attr)
         exists = (drv->usb_rapid_charge_supported) ? true : false;
     else if (attr == &dev_attr_usb_sleep_music.attr)
         exists = (drv->usb_sleep_music_supported) ? true : false;
     else if (attr == &dev_attr_kbd_function_keys.attr)
         exists = (drv->kbd_function_keys_supported) ? true : false;
     else if (attr == &dev_attr_panel_power_on.attr)
         exists = (drv->panel_power_on_supported) ? true : false;
     else if (attr == &dev_attr_usb_three.attr)
         exists = (drv->usb_three_supported) ? true : false;
     else if (attr == &dev_attr_cooling_method.attr)
         exists = (drv->cooling_method_supported) ? true : false;
 
     return exists ? attr->mode : 0;
 }
 
 static const struct attribute_group toshiba_attr_group = {
     .is_visible = toshiba_sysfs_is_visible,
     .attrs = toshiba_attributes,
 };
 
 static void toshiba_acpi_kbd_bl_work(struct work_struct *work)
 {
     /* Update the sysfs entries */
     if (sysfs_update_group(&toshiba_acpi->acpi_dev->dev.kobj,
                    &toshiba_attr_group))
         pr_err("Unable to update sysfs entries\n");
 
     /* Notify LED subsystem about keyboard backlight change */
     if (toshiba_acpi->kbd_type == 2 &&
         toshiba_acpi->kbd_mode != SCI_KBD_MODE_AUTO)
         led_classdev_notify_brightness_hw_changed(&toshiba_acpi->kbd_led,
                 (toshiba_acpi->kbd_mode == SCI_KBD_MODE_ON) ?
                 LED_FULL : LED_OFF);
 
     /* Emulate the keyboard backlight event */
     acpi_bus_generate_netlink_event(toshiba_acpi->acpi_dev->pnp.device_class,
                     dev_name(&toshiba_acpi->acpi_dev->dev),
                     0x92, 0);
 }
 
 /*
  * IIO device
  */
 
 enum toshiba_iio_accel_chan {
     AXIS_X,
     AXIS_Y,
     AXIS_Z
 };
 
 static int toshiba_iio_accel_get_axis(enum toshiba_iio_accel_chan chan)
 {
     u32 xyval, zval;
     int ret;
 
     ret = toshiba_accelerometer_get(toshiba_acpi, &xyval, &zval);
     if (ret < 0)
         return ret;
 
     switch (chan) {
     case AXIS_X:
         return xyval & HCI_ACCEL_DIRECTION_MASK ?
             -(xyval & HCI_ACCEL_MASK) : xyval & HCI_ACCEL_MASK;
     case AXIS_Y:
         return (xyval >> HCI_MISC_SHIFT) & HCI_ACCEL_DIRECTION_MASK ?
             -((xyval >> HCI_MISC_SHIFT) & HCI_ACCEL_MASK) :
             (xyval >> HCI_MISC_SHIFT) & HCI_ACCEL_MASK;
     case AXIS_Z:
         return zval & HCI_ACCEL_DIRECTION_MASK ?
             -(zval & HCI_ACCEL_MASK) : zval & HCI_ACCEL_MASK;
     }
 
     return ret;
 }
 
 static int toshiba_iio_accel_read_raw(struct iio_dev *indio_dev,
                       struct iio_chan_spec const *chan,
                       int *val, int *val2, long mask)
 {
     int ret;
 
     switch (mask) {
     case IIO_CHAN_INFO_RAW:
         ret = toshiba_iio_accel_get_axis(chan->channel);
         if (ret == -EIO || ret == -ENODEV)
             return ret;
 
         *val = ret;
 
         return IIO_VAL_INT;
     }
 
     return -EINVAL;
 }
 
 #define TOSHIBA_IIO_ACCEL_CHANNEL(axis, chan) { \
     .type = IIO_ACCEL, \
     .modified = 1, \
     .channel = chan, \
     .channel2 = IIO_MOD_##axis, \
     .output = 1, \
     .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
 }
 
 static const struct iio_chan_spec toshiba_iio_accel_channels[] = {
     TOSHIBA_IIO_ACCEL_CHANNEL(X, AXIS_X),
     TOSHIBA_IIO_ACCEL_CHANNEL(Y, AXIS_Y),
     TOSHIBA_IIO_ACCEL_CHANNEL(Z, AXIS_Z),
 };
 
 static const struct iio_info toshiba_iio_accel_info = {
     .read_raw = &toshiba_iio_accel_read_raw,
 };
 
 /*
  * Misc device
  */
 static int toshiba_acpi_smm_bridge(SMMRegisters *regs)
 {
     u32 in[TCI_WORDS] = { regs->eax, regs->ebx, regs->ecx,
                   regs->edx, regs->esi, regs->edi };
     u32 out[TCI_WORDS];
     acpi_status status;
 
     status = tci_raw(toshiba_acpi, in, out);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI call to query SMM registers failed\n");
         return -EIO;
     }
 
     /* Fillout the SMM struct with the TCI call results */
     regs->eax = out[0];
     regs->ebx = out[1];
     regs->ecx = out[2];
     regs->edx = out[3];
     regs->esi = out[4];
     regs->edi = out[5];
 
     return 0;
 }
 
 static long toshiba_acpi_ioctl(struct file *fp, unsigned int cmd,
                    unsigned long arg)
 {
     SMMRegisters __user *argp = (SMMRegisters __user *)arg;
     SMMRegisters regs;
     int ret;
 
     if (!argp)
         return -EINVAL;
 
     switch (cmd) {
     case TOSH_SMM:
         if (copy_from_user(&regs, argp, sizeof(SMMRegisters)))
             return -EFAULT;
         ret = toshiba_acpi_smm_bridge(&regs);
         if (ret)
             return ret;
         if (copy_to_user(argp, &regs, sizeof(SMMRegisters)))
             return -EFAULT;
         break;
     case TOSHIBA_ACPI_SCI:
         if (copy_from_user(&regs, argp, sizeof(SMMRegisters)))
             return -EFAULT;
         /* Ensure we are being called with a SCI_{GET, SET} register */
         if (regs.eax != SCI_GET && regs.eax != SCI_SET)
             return -EINVAL;
         if (!sci_open(toshiba_acpi))
             return -EIO;
         ret = toshiba_acpi_smm_bridge(&regs);
         sci_close(toshiba_acpi);
         if (ret)
             return ret;
         if (copy_to_user(argp, &regs, sizeof(SMMRegisters)))
             return -EFAULT;
         break;
     default:
         return -EINVAL;
     }
 
     return 0;
 }
 
 static const struct file_operations toshiba_acpi_fops = {
     .owner      = THIS_MODULE,
     .unlocked_ioctl = toshiba_acpi_ioctl,
     .llseek     = noop_llseek,
 };
 
 /*
  * WWAN RFKill handlers
  */
 static int toshiba_acpi_wwan_set_block(void *data, bool blocked)
 {
     struct toshiba_acpi_dev *dev = data;
     int ret;
 
     ret = toshiba_wireless_status(dev);
     if (ret)
         return ret;
 
     if (!dev->killswitch)
         return 0;
 
     return toshiba_wwan_set(dev, !blocked);
 }
 
 static void toshiba_acpi_wwan_poll(struct rfkill *rfkill, void *data)
 {
     struct toshiba_acpi_dev *dev = data;
 
     if (toshiba_wireless_status(dev))
         return;
 
     rfkill_set_hw_state(dev->wwan_rfk, !dev->killswitch);
 }
 
 static const struct rfkill_ops wwan_rfk_ops = {
     .set_block = toshiba_acpi_wwan_set_block,
     .poll = toshiba_acpi_wwan_poll,
 };
 
 static int toshiba_acpi_setup_wwan_rfkill(struct toshiba_acpi_dev *dev)
 {
     int ret = toshiba_wireless_status(dev);
 
     if (ret)
         return ret;
 
     dev->wwan_rfk = rfkill_alloc("Toshiba WWAN",
                      &dev->acpi_dev->dev,
                      RFKILL_TYPE_WWAN,
                      &wwan_rfk_ops,
                      dev);
     if (!dev->wwan_rfk) {
         pr_err("Unable to allocate WWAN rfkill device\n");
         return -ENOMEM;
     }
 
     rfkill_set_hw_state(dev->wwan_rfk, !dev->killswitch);
 
     ret = rfkill_register(dev->wwan_rfk);
     if (ret) {
         pr_err("Unable to register WWAN rfkill device\n");
         rfkill_destroy(dev->wwan_rfk);
     }
 
     return ret;
 }
 
 /*
  * Hotkeys
  */
 static int toshiba_acpi_enable_hotkeys(struct toshiba_acpi_dev *dev)
 {
     acpi_status status;
     u32 result;
 
     status = acpi_evaluate_object(dev->acpi_dev->handle,
                       "ENAB", NULL, NULL);
     if (ACPI_FAILURE(status))
         return -ENODEV;
 
     /*
      * Enable the "Special Functions" mode only if they are
      * supported and if they are activated.
      */
     if (dev->kbd_function_keys_supported && dev->special_functions)
         result = hci_write(dev, HCI_HOTKEY_EVENT,
                    HCI_HOTKEY_SPECIAL_FUNCTIONS);
     else
         result = hci_write(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE);
 
     if (result == TOS_FAILURE)
         return -EIO;
     else if (result == TOS_NOT_SUPPORTED)
         return -ENODEV;
 
     return 0;
 }
 
 static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
                       struct serio *port)
 {
     if (str & I8042_STR_AUXDATA)
         return false;
 
     if (unlikely(data == 0xe0))
         return false;
 
     if ((data & 0x7f) == TOS1900_FN_SCAN) {
         schedule_work(&toshiba_acpi->hotkey_work);
         return true;
     }
 
     return false;
 }
 
 static void toshiba_acpi_hotkey_work(struct work_struct *work)
 {
     acpi_handle ec_handle = ec_get_handle();
     acpi_status status;
 
     if (!ec_handle)
         return;
 
     status = acpi_evaluate_object(ec_handle, "NTFY", NULL, NULL);
     if (ACPI_FAILURE(status))
         pr_err("ACPI NTFY method execution failed\n");
 }
 
 /*
  * Returns hotkey scancode, or < 0 on failure.
  */
 static int toshiba_acpi_query_hotkey(struct toshiba_acpi_dev *dev)
 {
     unsigned long long value;
     acpi_status status;
 
     status = acpi_evaluate_integer(dev->acpi_dev->handle, "INFO",
                       NULL, &value);
     if (ACPI_FAILURE(status)) {
         pr_err("ACPI INFO method execution failed\n");
         return -EIO;
     }
 
     return value;
 }
 
 static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
                        int scancode)
 {
     if (scancode == 0x100)
         return;
 
     /* Act on key press; ignore key release */
     if (scancode & 0x80)
         return;
 
     if (!sparse_keymap_report_event(dev->hotkey_dev, scancode, 1, true))
         pr_info("Unknown key %x\n", scancode);
 }
 
 static void toshiba_acpi_process_hotkeys(struct toshiba_acpi_dev *dev)
 {
     if (dev->info_supported) {
         int scancode = toshiba_acpi_query_hotkey(dev);
 
         if (scancode < 0) {
             pr_err("Failed to query hotkey event\n");
         } else if (scancode != 0) {
             toshiba_acpi_report_hotkey(dev, scancode);
             dev->key_event_valid = 1;
             dev->last_key_event = scancode;
         }
     } else if (dev->system_event_supported) {
         u32 result;
         u32 value;
         int retries = 3;
 
         do {
             result = hci_read(dev, HCI_SYSTEM_EVENT, &value);
             switch (result) {
             case TOS_SUCCESS:
                 toshiba_acpi_report_hotkey(dev, (int)value);
                 dev->key_event_valid = 1;
                 dev->last_key_event = value;
                 break;
             case TOS_NOT_SUPPORTED:
                 /*
                  * This is a workaround for an unresolved
                  * issue on some machines where system events
                  * sporadically become disabled.
                  */
                 result = hci_write(dev, HCI_SYSTEM_EVENT, 1);
                 if (result == TOS_SUCCESS)
                     pr_notice("Re-enabled hotkeys\n");
                 fallthrough;
             default:
                 retries--;
                 break;
             }
         } while (retries && result != TOS_FIFO_EMPTY);
     }
 }
 
 static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
 {
     const struct key_entry *keymap = toshiba_acpi_keymap;
     acpi_handle ec_handle;
     int error;
 
     if (disable_hotkeys) {
         pr_info("Hotkeys disabled by module parameter\n");
         return 0;
     }
 
     if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID)) {
         pr_info("WMI event detected, hotkeys will not be monitored\n");
         return 0;
     }
 
     error = toshiba_acpi_enable_hotkeys(dev);
     if (error)
         return error;
 
     if (toshiba_hotkey_event_type_get(dev, &dev->hotkey_event_type))
         pr_notice("Unable to query Hotkey Event Type\n");
 
     dev->hotkey_dev = input_allocate_device();
     if (!dev->hotkey_dev)
         return -ENOMEM;
 
     dev->hotkey_dev->name = "Toshiba input device";
     dev->hotkey_dev->phys = "toshiba_acpi/input0";
     dev->hotkey_dev->id.bustype = BUS_HOST;
 
     if (dev->hotkey_event_type == HCI_SYSTEM_TYPE1 ||
         !dev->kbd_function_keys_supported)
         keymap = toshiba_acpi_keymap;
     else if (dev->hotkey_event_type == HCI_SYSTEM_TYPE2 ||
          dev->kbd_function_keys_supported)
         keymap = toshiba_acpi_alt_keymap;
     else
         pr_info("Unknown event type received %x\n",
             dev->hotkey_event_type);
     error = sparse_keymap_setup(dev->hotkey_dev, keymap, NULL);
     if (error)
         goto err_free_dev;
 
     /*
      * For some machines the SCI responsible for providing hotkey
      * notification doesn't fire. We can trigger the notification
      * whenever the Fn key is pressed using the NTFY method, if
      * supported, so if it's present set up an i8042 key filter
      * for this purpose.
      */
     ec_handle = ec_get_handle();
     if (ec_handle && acpi_has_method(ec_handle, "NTFY")) {
         INIT_WORK(&dev->hotkey_work, toshiba_acpi_hotkey_work);
 
         error = i8042_install_filter(toshiba_acpi_i8042_filter);
         if (error) {
             pr_err("Error installing key filter\n");
             goto err_free_dev;
         }
 
         dev->ntfy_supported = 1;
     }
 
     /*
      * Determine hotkey query interface. Prefer using the INFO
      * method when it is available.
      */
     if (acpi_has_method(dev->acpi_dev->handle, "INFO"))
         dev->info_supported = 1;
     else if (hci_write(dev, HCI_SYSTEM_EVENT, 1) == TOS_SUCCESS)
         dev->system_event_supported = 1;
 
     if (!dev->info_supported && !dev->system_event_supported) {
         pr_warn("No hotkey query interface found\n");
         error = -EINVAL;
         goto err_remove_filter;
     }
 
     error = input_register_device(dev->hotkey_dev);
     if (error) {
         pr_info("Unable to register input device\n");
         goto err_remove_filter;
     }
 
     return 0;
 
  err_remove_filter:
     if (dev->ntfy_supported)
         i8042_remove_filter(toshiba_acpi_i8042_filter);
  err_free_dev:
     input_free_device(dev->hotkey_dev);
     dev->hotkey_dev = NULL;
     return error;
 }
 
 static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
 {
     struct backlight_properties props;
     int brightness;
     int ret;
 
     /*
      * Some machines don't support the backlight methods at all, and
      * others support it read-only. Either of these is pretty useless,
      * so only register the backlight device if the backlight method
      * supports both reads and writes.
      */
     brightness = __get_lcd_brightness(dev);
     if (brightness < 0)
         return 0;
     /*
      * If transflective backlight is supported and the brightness is zero
      * (lowest brightness level), the set_lcd_brightness function will
      * activate the transflective backlight, making the LCD appear to be
      * turned off, simply increment the brightness level to avoid that.
      */
     if (dev->tr_backlight_supported && brightness == 0)
         brightness++;
     ret = set_lcd_brightness(dev, brightness);
     if (ret) {
         pr_debug("Backlight method is read-only, disabling backlight support\n");
         return 0;
     }
 
     /*
      * Tell acpi-video-detect code to prefer vendor backlight on all
      * systems with transflective backlight and on dmi matched systems.
      */
     if (dev->tr_backlight_supported ||
         dmi_check_system(toshiba_vendor_backlight_dmi))
         acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
 
     if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
         return 0;
 
     memset(&props, 0, sizeof(props));
     props.type = BACKLIGHT_PLATFORM;
     props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
 
     /* Adding an extra level and having 0 change to transflective mode */
     if (dev->tr_backlight_supported)
         props.max_brightness++;
 
     dev->backlight_dev = backlight_device_register("toshiba",
                                &dev->acpi_dev->dev,
                                dev,
                                &toshiba_backlight_data,
                                &props);
     if (IS_ERR(dev->backlight_dev)) {
         ret = PTR_ERR(dev->backlight_dev);
         pr_err("Could not register toshiba backlight device\n");
         dev->backlight_dev = NULL;
         return ret;
     }
 
     dev->backlight_dev->props.brightness = brightness;
     return 0;
 }
 
 static void print_supported_features(struct toshiba_acpi_dev *dev)
 {
     pr_info("Supported laptop features:");
 
     if (dev->hotkey_dev)
         pr_cont(" hotkeys");
     if (dev->backlight_dev)
         pr_cont(" backlight");
     if (dev->video_supported)
         pr_cont(" video-out");
     if (dev->fan_supported)
         pr_cont(" fan");
     if (dev->tr_backlight_supported)
         pr_cont(" transflective-backlight");
     if (dev->illumination_supported)
         pr_cont(" illumination");
     if (dev->kbd_illum_supported)
         pr_cont(" keyboard-backlight");
     if (dev->touchpad_supported)
         pr_cont(" touchpad");
     if (dev->eco_supported)
         pr_cont(" eco-led");
     if (dev->accelerometer_supported)
         pr_cont(" accelerometer-axes");
     if (dev->usb_sleep_charge_supported)
         pr_cont(" usb-sleep-charge");
     if (dev->usb_rapid_charge_supported)
         pr_cont(" usb-rapid-charge");
     if (dev->usb_sleep_music_supported)
         pr_cont(" usb-sleep-music");
     if (dev->kbd_function_keys_supported)
         pr_cont(" special-function-keys");
     if (dev->panel_power_on_supported)
         pr_cont(" panel-power-on");
     if (dev->usb_three_supported)
         pr_cont(" usb3");
     if (dev->wwan_supported)
         pr_cont(" wwan");
     if (dev->cooling_method_supported)
         pr_cont(" cooling-method");
 
     pr_cont("\n");
 }
 
 static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
 {
     struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
 
     misc_deregister(&dev->miscdev);
 
     remove_toshiba_proc_entries(dev);
 
     if (dev->accelerometer_supported && dev->indio_dev) {
         iio_device_unregister(dev->indio_dev);
         iio_device_free(dev->indio_dev);
     }
 
     if (dev->sysfs_created)
         sysfs_remove_group(&dev->acpi_dev->dev.kobj,
                    &toshiba_attr_group);
 
     if (dev->ntfy_supported) {
         i8042_remove_filter(toshiba_acpi_i8042_filter);
         cancel_work_sync(&dev->hotkey_work);
     }
 
     if (dev->hotkey_dev)
         input_unregister_device(dev->hotkey_dev);
 
     backlight_device_unregister(dev->backlight_dev);
 
     led_classdev_unregister(&dev->led_dev);
     led_classdev_unregister(&dev->kbd_led);
     led_classdev_unregister(&dev->eco_led);
 
     if (dev->wwan_rfk) {
         rfkill_unregister(dev->wwan_rfk);
         rfkill_destroy(dev->wwan_rfk);
     }
 
     if (toshiba_acpi)
         toshiba_acpi = NULL;
 
     kfree(dev);
 
     return 0;
 }
 
 static const char *find_hci_method(acpi_handle handle)
 {
     if (acpi_has_method(handle, "GHCI"))
         return "GHCI";
 
     if (acpi_has_method(handle, "SPFC"))
         return "SPFC";
 
     return NULL;
 }
 
 static int toshiba_acpi_add(struct acpi_device *acpi_dev)
 {
     struct toshiba_acpi_dev *dev;
     const char *hci_method;
     u32 dummy;
     int ret = 0;
 
     if (toshiba_acpi)
         return -EBUSY;
 
     pr_info("Toshiba Laptop ACPI Extras version %s\n",
            TOSHIBA_ACPI_VERSION);
 
     hci_method = find_hci_method(acpi_dev->handle);
     if (!hci_method) {
         pr_err("HCI interface not found\n");
         return -ENODEV;
     }
 
     dev = kzalloc(sizeof(*dev), GFP_KERNEL);
     if (!dev)
         return -ENOMEM;
     dev->acpi_dev = acpi_dev;
     dev->method_hci = hci_method;
     dev->miscdev.minor = MISC_DYNAMIC_MINOR;
     dev->miscdev.name = "toshiba_acpi";
     dev->miscdev.fops = &toshiba_acpi_fops;
 
     ret = misc_register(&dev->miscdev);
     if (ret) {
         pr_err("Failed to register miscdevice\n");
         kfree(dev);
         return ret;
     }
 
     acpi_dev->driver_data = dev;
     dev_set_drvdata(&acpi_dev->dev, dev);
 
     /* Query the BIOS for supported features */
 
     /*
      * The "Special Functions" are always supported by the laptops
      * with the new keyboard layout, query for its presence to help
      * determine the keymap layout to use.
      */
     ret = toshiba_function_keys_get(dev, &dev->special_functions);
     dev->kbd_function_keys_supported = !ret;
 
     dev->hotkey_event_type = 0;
     if (toshiba_acpi_setup_keyboard(dev))
         pr_info("Unable to activate hotkeys\n");
 
     /* Determine whether or not BIOS supports transflective backlight */
     ret = get_tr_backlight_status(dev, &dummy);
     dev->tr_backlight_supported = !ret;
 
     ret = toshiba_acpi_setup_backlight(dev);
     if (ret)
         goto error;
 
     toshiba_illumination_available(dev);
     if (dev->illumination_supported) {
         dev->led_dev.name = "toshiba::illumination";
         dev->led_dev.max_brightness = 1;
         dev->led_dev.brightness_set = toshiba_illumination_set;
         dev->led_dev.brightness_get = toshiba_illumination_get;
         led_classdev_register(&acpi_dev->dev, &dev->led_dev);
     }
 
     toshiba_eco_mode_available(dev);
     if (dev->eco_supported) {
         dev->eco_led.name = "toshiba::eco_mode";
         dev->eco_led.max_brightness = 1;
         dev->eco_led.brightness_set = toshiba_eco_mode_set_status;
         dev->eco_led.brightness_get = toshiba_eco_mode_get_status;
         led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led);
     }
 
     toshiba_kbd_illum_available(dev);
     /*
      * Only register the LED if KBD illumination is supported
      * and the keyboard backlight operation mode is set to FN-Z
      * or we detect a second gen keyboard backlight
      */
     if (dev->kbd_illum_supported &&
         (dev->kbd_mode == SCI_KBD_MODE_FNZ || dev->kbd_type == 2)) {
         dev->kbd_led.name = "toshiba::kbd_backlight";
         dev->kbd_led.flags = LED_BRIGHT_HW_CHANGED;
         dev->kbd_led.max_brightness = 1;
         dev->kbd_led.brightness_set = toshiba_kbd_backlight_set;
         dev->kbd_led.brightness_get = toshiba_kbd_backlight_get;
         led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led);
     }
 
     ret = toshiba_touchpad_get(dev, &dummy);
     dev->touchpad_supported = !ret;
 
     toshiba_accelerometer_available(dev);
     if (dev->accelerometer_supported) {
         dev->indio_dev = iio_device_alloc(&acpi_dev->dev, sizeof(*dev));
         if (!dev->indio_dev) {
             pr_err("Unable to allocate iio device\n");
             goto iio_error;
         }
 
         pr_info("Registering Toshiba accelerometer iio device\n");
 
         dev->indio_dev->info = &toshiba_iio_accel_info;
         dev->indio_dev->name = "Toshiba accelerometer";
         dev->indio_dev->modes = INDIO_DIRECT_MODE;
         dev->indio_dev->channels = toshiba_iio_accel_channels;
         dev->indio_dev->num_channels =
                     ARRAY_SIZE(toshiba_iio_accel_channels);
 
         ret = iio_device_register(dev->indio_dev);
         if (ret < 0) {
             pr_err("Unable to register iio device\n");
             iio_device_free(dev->indio_dev);
         }
     }
 iio_error:
 
     toshiba_usb_sleep_charge_available(dev);
 
     ret = toshiba_usb_rapid_charge_get(dev, &dummy);
     dev->usb_rapid_charge_supported = !ret;
 
     ret = toshiba_usb_sleep_music_get(dev, &dummy);
     dev->usb_sleep_music_supported = !ret;
 
     ret = toshiba_panel_power_on_get(dev, &dummy);
     dev->panel_power_on_supported = !ret;
 
     ret = toshiba_usb_three_get(dev, &dummy);
     dev->usb_three_supported = !ret;
 
     ret = get_video_status(dev, &dummy);
     dev->video_supported = !ret;
 
     ret = get_fan_status(dev, &dummy);
     dev->fan_supported = !ret;
 
     toshiba_wwan_available(dev);
     if (dev->wwan_supported)
         toshiba_acpi_setup_wwan_rfkill(dev);
 
     toshiba_cooling_method_available(dev);
 
     print_supported_features(dev);
 
     ret = sysfs_create_group(&dev->acpi_dev->dev.kobj,
                  &toshiba_attr_group);
     if (ret) {
         dev->sysfs_created = 0;
         goto error;
     }
     dev->sysfs_created = !ret;
 
     create_toshiba_proc_entries(dev);
 
     toshiba_acpi = dev;
 
     return 0;
 
 error:
     toshiba_acpi_remove(acpi_dev);
     return ret;
 }
 
 static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
 {
     struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
 
     switch (event) {
     case 0x80: /* Hotkeys and some system events */
         /*
          * Machines with this WMI GUID aren't supported due to bugs in
          * their AML.
          *
          * Return silently to avoid triggering a netlink event.
          */
         if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
             return;
         toshiba_acpi_process_hotkeys(dev);
         break;
     case 0x81: /* Dock events */
     case 0x82:
     case 0x83:
         pr_info("Dock event received %x\n", event);
         break;
     case 0x88: /* Thermal events */
         pr_info("Thermal event received\n");
         break;
     case 0x8f: /* LID closed */
     case 0x90: /* LID is closed and Dock has been ejected */
         break;
     case 0x8c: /* SATA power events */
     case 0x8b:
         pr_info("SATA power event received %x\n", event);
         break;
     case 0x92: /* Keyboard backlight mode changed */
         dev->kbd_event_generated = true;
         /* Update sysfs entries */
         if (sysfs_update_group(&acpi_dev->dev.kobj,
                        &toshiba_attr_group))
             pr_err("Unable to update sysfs entries\n");
         /* Notify LED subsystem about keyboard backlight change */
         if (dev->kbd_type == 2 && dev->kbd_mode != SCI_KBD_MODE_AUTO)
             led_classdev_notify_brightness_hw_changed(&dev->kbd_led,
                     (dev->kbd_mode == SCI_KBD_MODE_ON) ?
                     LED_FULL : LED_OFF);
         break;
     case 0x85: /* Unknown */
     case 0x8d: /* Unknown */
     case 0x8e: /* Unknown */
     case 0x94: /* Unknown */
     case 0x95: /* Unknown */
     default:
         pr_info("Unknown event received %x\n", event);
         break;
     }
 
     acpi_bus_generate_netlink_event(acpi_dev->pnp.device_class,
                     dev_name(&acpi_dev->dev),
                     event, (event == 0x80) ?
                     dev->last_key_event : 0);
 }
 
 #ifdef CONFIG_PM_SLEEP
 static int toshiba_acpi_suspend(struct device *device)
 {
     struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
 
     if (dev->hotkey_dev) {
         u32 result;
 
         result = hci_write(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE);
         if (result != TOS_SUCCESS)
             pr_info("Unable to disable hotkeys\n");
     }
 
     return 0;
 }
 
 static int toshiba_acpi_resume(struct device *device)
 {
     struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
 
     if (dev->hotkey_dev) {
         if (toshiba_acpi_enable_hotkeys(dev))
             pr_info("Unable to re-enable hotkeys\n");
     }
 
     if (dev->wwan_rfk) {
         if (!toshiba_wireless_status(dev))
             rfkill_set_hw_state(dev->wwan_rfk, !dev->killswitch);
     }
 
     return 0;
 }
 #endif
 
 static SIMPLE_DEV_PM_OPS(toshiba_acpi_pm,
              toshiba_acpi_suspend, toshiba_acpi_resume);
 
 static struct acpi_driver toshiba_acpi_driver = {
     .name   = "Toshiba ACPI driver",
     .owner  = THIS_MODULE,
     .ids    = toshiba_device_ids,
     .flags  = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
     .ops    = {
         .add        = toshiba_acpi_add,
         .remove     = toshiba_acpi_remove,
         .notify     = toshiba_acpi_notify,
     },
     .drv.pm = &toshiba_acpi_pm,
 };
 
 static int __init toshiba_acpi_init(void)
 {
     int ret;
 
     toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
     if (!toshiba_proc_dir) {
         pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
         return -ENODEV;
     }
 
     ret = acpi_bus_register_driver(&toshiba_acpi_driver);
     if (ret) {
         pr_err("Failed to register ACPI driver: %d\n", ret);
         remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
     }
 
     return ret;
 }
 
 static void __exit toshiba_acpi_exit(void)
 {
     acpi_bus_unregister_driver(&toshiba_acpi_driver);
     if (toshiba_proc_dir)
         remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
 }
 
 module_init(toshiba_acpi_init);
 module_exit(toshiba_acpi_exit);