text: /*
   *  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) 2014-2015 Azael Avalos
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation; either version 2 of the License, or
   *  (at your option) any later version.
   *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  The full GNU General Public License is included in this distribution in
   *  the file called "COPYING".
   *
   *  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	"0.21"
  #define PROC_INTERFACE_VERSION	1
  
  #include <linux/kernel.h>
  #include <linux/module.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/rfkill.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 <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_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_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_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 HCI_WIRELESS_KILL_SWITCH	0x01
  #define HCI_WIRELESS_BT_PRESENT		0x0f
  #define HCI_WIRELESS_BT_ATTACH		0x40
  #define HCI_WIRELESS_BT_POWER		0x80
  #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 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 rfkill *bt_rfk;
  	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;
  
  	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;
  
  	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 kbd_led_registered: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 sysfs_created:1;
  
  	struct mutex mutex;
  };
  
  static struct toshiba_acpi_dev *toshiba_acpi;
  
  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, 0x157, { KEY_MUTE } },
  	{ KE_KEY, 0x102, { KEY_ZOOMOUT } },
  	{ KE_KEY, 0x103, { KEY_ZOOMIN } },
  	{ KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
  	{ KE_KEY, 0x139, { KEY_ZOOMRESET } },
  	{ KE_KEY, 0x13e, { KEY_SWITCHVIDEOMODE } },
  	{ KE_KEY, 0x13c, { KEY_BRIGHTNESSDOWN } },
  	{ KE_KEY, 0x13d, { KEY_BRIGHTNESSUP } },
  	{ KE_KEY, 0x158, { KEY_WLAN } },
  	{ KE_KEY, 0x13f, { KEY_TOUCHPAD_TOGGLE } },
  	{ 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])
  {
  	struct acpi_object_list params;
  	union acpi_object in_objs[TCI_WORDS];
  	struct acpi_buffer results;
  	union acpi_object out_objs[TCI_WORDS + 1];
  	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 (get or set one or two value)
   *
   * In addition to the ACPI status, the HCI system returns a result which
   * may be useful (such as "not supported").
   */
  
  static u32 hci_write1(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_read1(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];
  }
  
  static u32 hci_write2(struct toshiba_acpi_dev *dev, u32 reg, u32 in1, u32 in2)
  {
  	u32 in[TCI_WORDS] = { HCI_SET, reg, in1, in2, 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_read2(struct toshiba_acpi_dev *dev,
  		     u32 reg, u32 *out1, u32 *out2)
  {
  	u32 in[TCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
  	u32 out[TCI_WORDS];
  	acpi_status status = tci_raw(dev, in, out);
  
  	if (ACPI_FAILURE(status))
  		return TOS_FAILURE;
  
  	*out1 = out[2];
  	*out2 = out[3];
  
  	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;
  
  	status = tci_raw(dev, in, out);
  	if  (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
  		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;
  
  	status = tci_raw(dev, in, out);
  	if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
  		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 int 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;
  
  	if (!sci_open(dev))
  		return 0;
  
  	status = tci_raw(dev, in, out);
  	sci_close(dev);
  	if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
  		pr_err("ACPI call to query Illumination support failed\n");
  		return 0;
  	} else if (out[0] == TOS_NOT_SUPPORTED) {
  		pr_info("Illumination device not available\n");
  		return 0;
  	}
  
  	return 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 state, result;
  
  	/* 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");
  		return;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("Illumination not supported\n");
  		return;
  	}
  }
  
  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 state, result;
  
  	/* 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 || result == TOS_INPUT_DATA_ERROR) {
  		pr_err("ACPI call for illumination failed\n");
  		return LED_OFF;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("Illumination not supported\n");
  		return LED_OFF;
  	}
  
  	return state ? LED_FULL : LED_OFF;
  }
  
  /* KBD Illumination */
  static int 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;
  
  	if (!sci_open(dev))
  		return 0;
  
  	status = tci_raw(dev, in, out);
  	sci_close(dev);
  	if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
  		pr_err("ACPI call to query kbd illumination support failed\n");
  		return 0;
  	} else if (out[0] == TOS_NOT_SUPPORTED) {
  		pr_info("Keyboard illumination not available\n");
  		return 0;
  	}
  
  	/*
  	 * 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;
  
  	return 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 || result == TOS_INPUT_DATA_ERROR) {
  		pr_err("ACPI call to set KBD backlight status failed\n");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("Keyboard backlight status not supported\n");
  		return -ENODEV;
  	}
  
  	return 0;
  }
  
  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 || result == TOS_INPUT_DATA_ERROR) {
  		pr_err("ACPI call to get KBD backlight status failed\n");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("Keyboard backlight status not supported\n");
  		return -ENODEV;
  	}
  
  	return 0;
  }
  
  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 state, result;
  
  	/* Check the keyboard backlight state */
  	result = hci_read1(dev, HCI_KBD_ILLUMINATION, &state);
  	if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
  		pr_err("ACPI call to get the keyboard backlight failed\n");
  		return LED_OFF;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("Keyboard backlight not supported\n");
  		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 state, result;
  
  	/* Set the keyboard backlight state */
  	state = brightness ? 1 : 0;
  	result = hci_write1(dev, HCI_KBD_ILLUMINATION, state);
  	if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
  		pr_err("ACPI call to set KBD Illumination mode failed\n");
  		return;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("Keyboard backlight not supported\n");
  		return;
  	}
  }
  
  /* 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");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		return -ENODEV;
  	}
  
  	return 0;
  }
  
  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");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		return -ENODEV;
  	}
  
  	return 0;
  }
  
  /* Eco Mode support */
  static int toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
  {
  	acpi_status status;
  	u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 0, 0, 0 };
  	u32 out[TCI_WORDS];
  
  	status = tci_raw(dev, in, out);
  	if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
  		pr_err("ACPI call to get ECO led failed\n");
  	} else if (out[0] == TOS_NOT_INSTALLED) {
  		pr_info("ECO led not installed");
  	} else 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) || out[0] == TOS_FAILURE)
  			pr_err("ACPI call to get ECO led failed\n");
  		else if (out[0] == TOS_SUCCESS)
  			return 1;
  	}
  
  	return 0;
  }
  
  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) || out[0] == TOS_INPUT_DATA_ERROR) {
  		pr_err("ACPI call to get ECO led failed\n");
  		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) || out[0] == TOS_INPUT_DATA_ERROR) {
  		pr_err("ACPI call to set ECO led failed\n");
  		return;
  	}
  }
  
  /* Accelerometer support */
  static int toshiba_accelerometer_supported(struct toshiba_acpi_dev *dev)
  {
  	u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER2, 0, 0, 0, 0 };
  	u32 out[TCI_WORDS];
  	acpi_status status;
  
  	/*
  	 * Check if the accelerometer call exists,
  	 * this call also serves as initialization
  	 */
  	status = tci_raw(dev, in, out);
  	if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
  		pr_err("ACPI call to query the accelerometer failed\n");
  		return -EIO;
  	} else if (out[0] == TOS_DATA_NOT_AVAILABLE ||
  		   out[0] == TOS_NOT_INITIALIZED) {
  		pr_err("Accelerometer not initialized\n");
  		return -EIO;
  	} else if (out[0] == TOS_NOT_SUPPORTED) {
  		pr_info("Accelerometer not supported\n");
  		return -ENODEV;
  	}
  
  	return 0;
  }
  
  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) || out[0] == TOS_INPUT_DATA_ERROR) {
  		pr_err("ACPI call to query the accelerometer failed\n");
  		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;
  
  	/* Set the feature to "not supported" in case of error */
  	dev->usb_sleep_charge_supported = 0;
  
  	if (!sci_open(dev))
  		return;
  
  	status = tci_raw(dev, in, out);
  	if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
  		pr_err("ACPI call to get USB Sleep and Charge mode failed\n");
  		sci_close(dev);
  		return;
  	} else if (out[0] == TOS_NOT_SUPPORTED) {
  		pr_info("USB Sleep and Charge not supported\n");
  		sci_close(dev);
  		return;
  	} else if (out[0] == TOS_SUCCESS) {
  		dev->usbsc_mode_base = out[4];
  	}
  
  	in[5] = SCI_USB_CHARGE_BAT_LVL;
  	status = tci_raw(dev, in, out);
  	if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) {
  		pr_err("ACPI call to get USB Sleep and Charge mode failed\n");
  		sci_close(dev);
  		return;
  	} else if (out[0] == TOS_NOT_SUPPORTED) {
  		pr_info("USB Sleep and Charge not supported\n");
  		sci_close(dev);
  		return;
  	} else if (out[0] == TOS_SUCCESS) {
  		dev->usbsc_bat_level = out[2];
  		/*
  		 * If we reach this point, it means that the laptop has support
  		 * for this feature and all values are initialized.
  		 * Set it as supported.
  		 */
  		dev->usb_sleep_charge_supported = 1;
  	}
  
  	sci_close(dev);
  }
  
  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");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("USB Sleep and Charge not supported\n");
  		return -ENODEV;
  	} else if (result == TOS_INPUT_DATA_ERROR) {
  		return -EIO;
  	}
  
  	return 0;
  }
  
  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");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("USB Sleep and Charge not supported\n");
  		return -ENODEV;
  	} else if (result == TOS_INPUT_DATA_ERROR) {
  		return -EIO;
  	}
  
  	return 0;
  }
  
  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) || out[0] == TOS_FAILURE) {
  		pr_err("ACPI call to get USB S&C battery level failed\n");
  		return -EIO;
  	} else if (out[0] == TOS_NOT_SUPPORTED) {
  		pr_info("USB Sleep and Charge not supported\n");
  		return -ENODEV;
  	} else if (out[0] == TOS_INPUT_DATA_ERROR) {
  		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) || out[0] == TOS_FAILURE) {
  		pr_err("ACPI call to set USB S&C battery level failed\n");
  		return -EIO;
  	} else if (out[0] == TOS_NOT_SUPPORTED) {
  		pr_info("USB Sleep and Charge not supported\n");
  		return -ENODEV;
  	} else if (out[0] == TOS_INPUT_DATA_ERROR) {
  		return -EIO;
  	}
  
  	return 0;
  }
  
  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) || out[0] == TOS_FAILURE) {
  		pr_err("ACPI call to get USB Rapid Charge failed\n");
  		return -EIO;
  	} else if (out[0] == TOS_NOT_SUPPORTED ||
  		   out[0] == TOS_INPUT_DATA_ERROR) {
  		pr_info("USB Rapid Charge not supported\n");
  		return -ENODEV;
  	}
  
  	*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) || out[0] == TOS_FAILURE) {
  		pr_err("ACPI call to set USB Rapid Charge failed\n");
  		return -EIO;
  	} else if (out[0] == TOS_NOT_SUPPORTED) {
  		pr_info("USB Rapid Charge not supported\n");
  		return -ENODEV;
  	} else if (out[0] == TOS_INPUT_DATA_ERROR) {
  		return -EIO;
  	}
  
  	return 0;
  }
  
  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");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("Sleep and Music not supported\n");
  		return -ENODEV;
  	} else if (result == TOS_INPUT_DATA_ERROR) {
  		return -EIO;
  	}
  
  	return 0;
  }
  
  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");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("Sleep and Music not supported\n");
  		return -ENODEV;
  	} else if (result == TOS_INPUT_DATA_ERROR) {
  		return -EIO;
  	}
  
  	return 0;
  }
  
  /* 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 || result == TOS_INPUT_DATA_ERROR) {
  		pr_err("ACPI call to get KBD function keys failed\n");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("KBD function keys not supported\n");
  		return -ENODEV;
  	}
  
  	return 0;
  }
  
  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 || result == TOS_INPUT_DATA_ERROR) {
  		pr_err("ACPI call to set KBD function keys failed\n");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("KBD function keys not supported\n");
  		return -ENODEV;
  	}
  
  	return 0;
  }
  
  /* 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");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("Panel Power on not supported\n");
  		return -ENODEV;
  	} else if (result == TOS_INPUT_DATA_ERROR) {
  		return -EIO;
  	}
  
  	return 0;
  }
  
  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");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("Panel Power ON not supported\n");
  		return -ENODEV;
  	} else if (result == TOS_INPUT_DATA_ERROR) {
  		return -EIO;
  	}
  
  	return 0;
  }
  
  /* 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");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("USB 3 not supported\n");
  		return -ENODEV;
  	} else if (result == TOS_INPUT_DATA_ERROR) {
  		return -EIO;
  	}
  
  	return 0;
  }
  
  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");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("USB 3 not supported\n");
  		return -ENODEV;
  	} else if (result == TOS_INPUT_DATA_ERROR) {
  		return -EIO;
  	}
  
  	return 0;
  }
  
  /* Hotkey Event type */
  static int toshiba_hotkey_event_type_get(struct toshiba_acpi_dev *dev,
  					 u32 *type)
  {
  	u32 val1 = 0x03;
  	u32 val2 = 0;
  	u32 result;
  
  	result = hci_read2(dev, HCI_SYSTEM_INFO, &val1, &val2);
  	if (result == TOS_FAILURE) {
  		pr_err("ACPI call to get System type failed\n");
  		return -EIO;
  	} else if (result == TOS_NOT_SUPPORTED) {
  		pr_info("System type not supported\n");
  		return -ENODEV;
  	}
  
  	*type = val2;
  
  	return 0;
  }
  
  /* Bluetooth rfkill handlers */
  
  static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
  {
  	u32 hci_result;
  	u32 value, value2;
  
  	value = 0;
  	value2 = 0;
  	hci_result = hci_read2(dev, HCI_WIRELESS, &value, &value2);
  	if (hci_result == TOS_SUCCESS)
  		*present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
  
  	return hci_result;
  }
  
  static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
  {
  	u32 hci_result;
  	u32 value, value2;
  
  	value = 0;
  	value2 = 0x0001;
  	hci_result = hci_read2(dev, HCI_WIRELESS, &value, &value2);
  
  	*radio_state = value & HCI_WIRELESS_KILL_SWITCH;
  	return hci_result;
  }
  
  static int bt_rfkill_set_block(void *data, bool blocked)
  {
  	struct toshiba_acpi_dev *dev = data;
  	u32 result1, result2;
  	u32 value;
  	int err;
  	bool radio_state;
  
  	value = (blocked == false);
  
  	mutex_lock(&dev->mutex);
  	if (hci_get_radio_state(dev, &radio_state) != TOS_SUCCESS) {
  		err = -EIO;
  		goto out;
  	}
  
  	if (!radio_state) {
  		err = 0;
  		goto out;
  	}
  
  	result1 = hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER);
  	result2 = hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH);
  
  	if (result1 != TOS_SUCCESS || result2 != TOS_SUCCESS)
  		err = -EIO;
  	else
  		err = 0;
   out:
  	mutex_unlock(&dev->mutex);
  	return err;
  }
  
  static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
  {
  	bool new_rfk_state;
  	bool value;
  	u32 hci_result;
  	struct toshiba_acpi_dev *dev = data;
  
  	mutex_lock(&dev->mutex);
  
  	hci_result = hci_get_radio_state(dev, &value);
  	if (hci_result != TOS_SUCCESS) {
  		/* Can't do anything useful */
  		mutex_unlock(&dev->mutex);
  		return;
  	}
  
  	new_rfk_state = value;
  
  	mutex_unlock(&dev->mutex);
  
  	if (rfkill_set_hw_state(rfkill, !new_rfk_state))
  		bt_rfkill_set_block(data, true);
  }
  
  static const struct rfkill_ops toshiba_rfk_ops = {
  	.set_block = bt_rfkill_set_block,
  	.poll = bt_rfkill_poll,
  };
  
  static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, bool *enabled)
  {
  	u32 hci_result;
  	u32 status;
  
  	hci_result = hci_read1(dev, HCI_TR_BACKLIGHT, &status);
  	*enabled = !status;
  	return hci_result == TOS_SUCCESS ? 0 : -EIO;
  }
  
  static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, bool enable)
  {
  	u32 hci_result;
  	u32 value = !enable;
  
  	hci_result = hci_write1(dev, HCI_TR_BACKLIGHT, value);
  	return hci_result == TOS_SUCCESS ? 0 : -EIO;
  }
  
  static struct proc_dir_entry *toshiba_proc_dir /*= 0*/;
  
  static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
  {
  	u32 hci_result;
  	u32 value;
  	int brightness = 0;
  
  	if (dev->tr_backlight_supported) {
  		bool enabled;
  		int ret = get_tr_backlight_status(dev, &enabled);
  
  		if (ret)
  			return ret;
  		if (enabled)
  			return 0;
  		brightness++;
  	}
  
  	hci_result = hci_read1(dev, HCI_LCD_BRIGHTNESS, &value);
  	if (hci_result == TOS_SUCCESS)
  		return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);
  
  	return -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 value;
  	int levels;
  
  	if (!dev->backlight_dev)
  		return -ENODEV;
  
  	levels = dev->backlight_dev->props.max_brightness + 1;
  	value = get_lcd_brightness(dev->backlight_dev);
  	if (value >= 0) {
  		seq_printf(m, "brightness:              %d\n", value);
  		seq_printf(m, "brightness_levels:       %d\n", levels);
  		return 0;
  	}
  
  	pr_err("Error reading LCD brightness\n");
  	return -EIO;
  }
  
  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 hci_result;
  
  	if (dev->tr_backlight_supported) {
  		bool enable = !value;
  		int ret = set_tr_backlight_status(dev, enable);
  
  		if (ret)
  			return ret;
  		if (value)
  			value--;
  	}
  
  	value = value << HCI_LCD_BRIGHTNESS_SHIFT;
  	hci_result = hci_write1(dev, HCI_LCD_BRIGHTNESS, value);
  	return hci_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 value;
  	int ret;
  	int levels = dev->backlight_dev->props.max_brightness + 1;
  
  	len = min(count, sizeof(cmd) - 1);
  	if (copy_from_user(cmd, buf, len))
  		return -EFAULT;
  	cmd[len] = '\0';
  
  	if (sscanf(cmd, " brightness : %i", &value) == 1 &&
  	    value >= 0 && value < levels) {
  		ret = set_lcd_brightness(dev, value);
  		if (ret == 0)
  			ret = count;
  	} else {
  		ret = -EINVAL;
  	}
  	return ret;
  }
  
  static const struct file_operations lcd_proc_fops = {
  	.owner		= THIS_MODULE,
  	.open		= lcd_proc_open,
  	.read		= seq_read,
  	.llseek		= seq_lseek,
  	.release	= single_release,
  	.write		= lcd_proc_write,
  };
  
  static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
  {
  	u32 hci_result;
  
  	hci_result = hci_read1(dev, HCI_VIDEO_OUT, status);
  	return hci_result == TOS_SUCCESS ? 0 : -EIO;
  }
  
  static int video_proc_show(struct seq_file *m, void *v)
  {
  	struct toshiba_acpi_dev *dev = m->private;
  	u32 value;
  	int ret;
  
  	ret = get_video_status(dev, &value);
  	if (!ret) {
  		int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
  		int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
  		int 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 ret;
  }
  
  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 *cmd, *buffer;
  	int ret;
  	int value;
  	int remain = count;
  	int lcd_out = -1;
  	int crt_out = -1;
  	int tv_out = -1;
  	u32 video_out;
  
  	cmd = kmalloc(count + 1, GFP_KERNEL);
  	if (!cmd)
  		return -ENOMEM;
  	if (copy_from_user(cmd, buf, count)) {
  		kfree(cmd);
  		return -EFAULT;
  	}
  	cmd[count] = '\0';
  
  	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 ? ret : count;
  }
  
  static const struct file_operations video_proc_fops = {
  	.owner		= THIS_MODULE,
  	.open		= video_proc_open,
  	.read		= seq_read,
  	.llseek		= seq_lseek,
  	.release	= single_release,
  	.write		= video_proc_write,
  };
  
  static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
  {
  	u32 hci_result;
  
  	hci_result = hci_read1(dev, HCI_FAN, status);
  	return hci_result == TOS_SUCCESS ? 0 : -EIO;
  }
  
  static int fan_proc_show(struct seq_file *m, void *v)
  {
  	struct toshiba_acpi_dev *dev = m->private;
  	int ret;
  	u32 value;
  
  	ret = get_fan_status(dev, &value);
  	if (!ret) {
  		seq_printf(m, "running:                 %d\n", (value > 0));
  		seq_printf(m, "force_on:                %d\n", dev->force_fan);
  	}
  
  	return ret;
  }
  
  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;
  	u32 hci_result;
  
  	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) {
  		hci_result = hci_write1(dev, HCI_FAN, value);
  		if (hci_result == TOS_SUCCESS)
  			dev->force_fan = value;
  		else
  			return -EIO;
  	} else {
  		return -EINVAL;
  	}
  
  	return count;
  }
  
  static const struct file_operations fan_proc_fops = {
  	.owner		= THIS_MODULE,
  	.open		= fan_proc_open,
  	.read		= seq_read,
  	.llseek		= seq_lseek,
  	.release	= single_release,
  	.write		= fan_proc_write,
  };
  
  static int keys_proc_show(struct seq_file *m, void *v)
  {
  	struct toshiba_acpi_dev *dev = m->private;
  	u32 hci_result;
  	u32 value;
  
  	if (!dev->key_event_valid && dev->system_event_supported) {
  		hci_result = hci_read1(dev, HCI_SYSTEM_EVENT, &value);
  		if (hci_result == TOS_SUCCESS) {
  			dev->key_event_valid = 1;
  			dev->last_key_event = value;
  		} else if (hci_result == TOS_FIFO_EMPTY) {
  			/* Better luck next time */
  		} else if (hci_result == TOS_NOT_SUPPORTED) {
  			/*
  			 * This is a workaround for an unresolved issue on
  			 * some machines where system events sporadically
  			 * become disabled.
  			 */
  			hci_result = hci_write1(dev, HCI_SYSTEM_EVENT, 1);
  			pr_notice("Re-enabled hotkeys\n");
  		} else {
  			pr_err("Error reading hotkey status\n");
  			return -EIO;
  		}
  	}
  
  	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 file_operations keys_proc_fops = {
  	.owner		= THIS_MODULE,
  	.open		= keys_proc_open,
  	.read		= seq_read,
  	.llseek		= seq_lseek,
  	.release	= single_release,
  	.write		= keys_proc_write,
  };
  
  static int 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;
  }
  
  static int version_proc_open(struct inode *inode, struct file *file)
  {
  	return single_open(file, version_proc_show, PDE_DATA(inode));
  }
  
  static const struct file_operations version_proc_fops = {
  	.owner		= THIS_MODULE,
  	.open		= version_proc_open,
  	.read		= seq_read,
  	.llseek		= seq_lseek,
  	.release	= single_release,
  };
  
  /*
   * 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_fops, dev);
  	if (dev->video_supported)
  		proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
  				 &video_proc_fops, dev);
  	if (dev->fan_supported)
  		proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
  				 &fan_proc_fops, dev);
  	if (dev->hotkey_dev)
  		proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
  				 &keys_proc_fops, dev);
  	proc_create_data("version", S_IRUGO, toshiba_proc_dir,
  			 &version_proc_fops, 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,
  };
  
  /*
   * 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);
  	u32 result;
  	int state;
  	int ret;
  
  	ret = kstrtoint(buf, 0, &state);
  	if (ret)
  		return ret;
  
  	if (state != 0 && state != 1)
  		return -EINVAL;
  
  	result = hci_write1(toshiba, HCI_FAN, state);
  	if (result == TOS_FAILURE)
  		return -EIO;
  	else if (result == TOS_NOT_SUPPORTED)
  		return -ENODEV;
  
  	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 time;
  	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) */
  		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;
  	}
  
  	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, "%x %x\n",
  			       SCI_KBD_MODE_FNZ, SCI_KBD_MODE_AUTO);
  
  	return sprintf(buf, "%x %x %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 position_show(struct device *dev,
  			     struct device_attribute *attr, char *buf)
  {
  	struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
  	u32 xyval, zval, tmp;
  	u16 x, y, z;
  	int ret;
  
  	xyval = zval = 0;
  	ret = toshiba_accelerometer_get(toshiba, &xyval, &zval);
  	if (ret < 0)
  		return ret;
  
  	x = xyval & HCI_ACCEL_MASK;
  	tmp = xyval >> HCI_MISC_SHIFT;
  	y = tmp & HCI_ACCEL_MASK;
  	z = zval & HCI_ACCEL_MASK;
  
  	return sprintf(buf, "%d %d %d\n", x, y, z);
  }
  static DEVICE_ATTR_RO(position);
  
  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);
  	u32 mode;
  	int state;
  	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);
  	u32 state;
  	int bat_lvl;
  	int status;
  	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 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_position.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,
  	NULL,
  };
  
  static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
  					struct attribute *attr, int idx)
  {
  	struct device *dev = container_of(kobj, struct device, 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_position.attr)
  		exists = (drv->accelerometer_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;
  
  	return exists ? attr->mode : 0;
  }
  
  static struct attribute_group toshiba_attr_group = {
  	.is_visible = toshiba_sysfs_is_visible,
  	.attrs = toshiba_attributes,
  };
  
  /*
   * 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;
  
  	result = hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE);
  	if (result == TOS_FAILURE)
  		return -EIO;
  	else if (result == TOS_NOT_SUPPORTED)
  		return -ENODEV;
  
  	return 0;
  }
  
  static void toshiba_acpi_enable_special_functions(struct toshiba_acpi_dev *dev)
  {
  	u32 result;
  
  	/*
  	 * Re-activate the hotkeys, but this time, we are using the
  	 * "Special Functions" mode.
  	 */
  	result = hci_write1(dev, HCI_HOTKEY_EVENT,
  			    HCI_HOTKEY_SPECIAL_FUNCTIONS);
  	if (result != TOS_SUCCESS)
  		pr_err("Could not enable the Special Function mode\n");
  }
  
  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)
  {
  	u32 hci_result, value;
  	int retries = 3;
  	int scancode;
  
  	if (dev->info_supported) {
  		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);
  	} else if (dev->system_event_supported) {
  		do {
  			hci_result = hci_read1(dev, HCI_SYSTEM_EVENT, &value);
  			switch (hci_result) {
  			case TOS_SUCCESS:
  				toshiba_acpi_report_hotkey(dev, (int)value);
  				break;
  			case TOS_NOT_SUPPORTED:
  				/*
  				 * This is a workaround for an unresolved
  				 * issue on some machines where system events
  				 * sporadically become disabled.
  				 */
  				hci_result =
  					hci_write1(dev, HCI_SYSTEM_EVENT, 1);
  				pr_notice("Re-enabled hotkeys\n");
  				/* Fall through */
  			default:
  				retries--;
  				break;
  			}
  		} while (retries && hci_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;
  	u32 events_type;
  	u32 hci_result;
  	int error;
  
  	error = toshiba_acpi_enable_hotkeys(dev);
  	if (error)
  		return error;
  
  	if (toshiba_hotkey_event_type_get(dev, &events_type))
  		pr_notice("Unable to query Hotkey Event Type\n");
  
  	dev->hotkey_event_type = events_type;
  
  	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 (events_type == HCI_SYSTEM_TYPE1 ||
  	    !dev->kbd_function_keys_supported)
  		keymap = toshiba_acpi_keymap;
  	else if (events_type == HCI_SYSTEM_TYPE2 ||
  		 dev->kbd_function_keys_supported)
  		keymap = toshiba_acpi_alt_keymap;
  	else
  		pr_info("Unknown event type received %x\n", events_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_keymap;
  		}
  
  		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 {
  		hci_result = hci_write1(dev, HCI_SYSTEM_EVENT, 1);
  		if (hci_result == TOS_SUCCESS)
  			dev->system_event_supported = 1;
  	}
  
  	if (!dev->info_supported && !dev->system_event_supported) {
  		pr_warn("No hotkey query interface found\n");
  		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_keymap:
  	sparse_keymap_free(dev->hotkey_dev);
   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;
  	bool enabled;
  
  	/*
  	 * 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;
  	ret = set_lcd_brightness(dev, brightness);
  	if (ret) {
  		pr_debug("Backlight method is read-only, disabling backlight support\n");
  		return 0;
  	}
  
  	/* Determine whether or not BIOS supports transflective backlight */
  	ret = get_tr_backlight_status(dev, &enabled);
  	dev->tr_backlight_supported = !ret;
  
  	/*
  	 * 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_dmi_promote_vendor();
  
  	if (acpi_video_backlight_support())
  		return 0;
  
  	/* acpi-video may have loaded before we called dmi_promote_vendor() */
  	acpi_video_unregister_backlight();
  
  	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 int toshiba_acpi_remove(struct acpi_device *acpi_dev)
  {
  	struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
  
  	remove_toshiba_proc_entries(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);
  		sparse_keymap_free(dev->hotkey_dev);
  	}
  
  	if (dev->bt_rfk) {
  		rfkill_unregister(dev->bt_rfk);
  		rfkill_destroy(dev->bt_rfk);
  	}
  
  	backlight_device_unregister(dev->backlight_dev);
  
  	if (dev->illumination_supported)
  		led_classdev_unregister(&dev->led_dev);
  
  	if (dev->kbd_led_registered)
  		led_classdev_unregister(&dev->kbd_led);
  
  	if (dev->eco_supported)
  		led_classdev_unregister(&dev->eco_led);
  
  	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 special_functions;
  	u32 dummy;
  	bool bt_present;
  	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;
  	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, &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");
  
  	mutex_init(&dev->mutex);
  
  	ret = toshiba_acpi_setup_backlight(dev);
  	if (ret)
  		goto error;
  
  	/* Register rfkill switch for Bluetooth */
  	if (hci_get_bt_present(dev, &bt_present) == TOS_SUCCESS && bt_present) {
  		dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth",
  					   &acpi_dev->dev,
  					   RFKILL_TYPE_BLUETOOTH,
  					   &toshiba_rfk_ops,
  					   dev);
  		if (!dev->bt_rfk) {
  			pr_err("unable to allocate rfkill device\n");
  			ret = -ENOMEM;
  			goto error;
  		}
  
  		ret = rfkill_register(dev->bt_rfk);
  		if (ret) {
  			pr_err("unable to register rfkill device\n");
  			rfkill_destroy(dev->bt_rfk);
  			goto error;
  		}
  	}
  
  	if (toshiba_illumination_available(dev)) {
  		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;
  		if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
  			dev->illumination_supported = 1;
  	}
  
  	if (toshiba_eco_mode_available(dev)) {
  		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;
  		if (!led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led))
  			dev->eco_supported = 1;
  	}
  
  	dev->kbd_illum_supported = 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
  	 */
  	if (dev->kbd_illum_supported && dev->kbd_mode == SCI_KBD_MODE_FNZ) {
  		dev->kbd_led.name = "toshiba::kbd_backlight";
  		dev->kbd_led.max_brightness = 1;
  		dev->kbd_led.brightness_set = toshiba_kbd_backlight_set;
  		dev->kbd_led.brightness_get = toshiba_kbd_backlight_get;
  		if (!led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led))
  			dev->kbd_led_registered = 1;
  	}
  
  	ret = toshiba_touchpad_get(dev, &dummy);
  	dev->touchpad_supported = !ret;
  
  	ret = toshiba_accelerometer_supported(dev);
  	dev->accelerometer_supported = !ret;
  
  	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;
  
  	/*
  	 * Enable the "Special Functions" mode only if they are
  	 * supported and if they are activated.
  	 */
  	if (dev->kbd_function_keys_supported && special_functions)
  		toshiba_acpi_enable_special_functions(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);
  	int ret;
  
  	switch (event) {
  	case 0x80: /* Hotkeys and some system events */
  		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 */
  		/* Update sysfs entries */
  		ret = sysfs_update_group(&acpi_dev->dev.kobj,
  					 &toshiba_attr_group);
  		if (ret)
  			pr_err("Unable to update sysfs entries\n");
  		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, 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));
  	u32 result;
  
  	if (dev->hotkey_dev)
  		result = hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE);
  
  	return 0;
  }
  
  static int toshiba_acpi_resume(struct device *device)
  {
  	struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
  	int error;
  
  	if (dev->hotkey_dev) {
  		error = toshiba_acpi_enable_hotkeys(dev);
  		if (error)
  			pr_info("Unable to re-enable hotkeys\n");
  	}
  
  	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;
  
  	/*
  	 * Machines with this WMI guid aren't supported due to bugs in
  	 * their AML. This check relies on wmi initializing before
  	 * toshiba_acpi to guarantee guids have been identified.
  	 */
  	if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
  		return -ENODEV;
  
  	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);
  