// 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: