Merge tag 'platform-drivers-x86-v4.1-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86

Pull x86 platform driver updates from Darren Hart:
 "This series includes significant updates to the toshiba_acpi driver
  and the reintroduction of the dell-laptop keyboard backlight additions
  I had to revert previously.  Also included are various fixes for
  typos, warnings, correctness, and minor bugs.

  Specifics:

  dell-laptop:
     - add support for keyboard backlight.

  toshiba_acpi:
     - adaptive keyboard, hotkey, USB sleep and charge, and backlight
       updates.  Update sysfs documentation.

  toshiba_bluetooth:
     - fix enabling/disabling loop on recent devices

  apple-gmux:
     - lock iGP IO to protect from vgaarb changes

  other:
     - Fix typos, clear gcc warnings, clarify pr_* messages, correct
       return types, update MAINTAINERS"

* tag 'platform-drivers-x86-v4.1-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: (25 commits)
  toshiba_acpi: Do not register vendor backlight when acpi_video bl is available
  MAINTAINERS: Add me on list of Dell laptop drivers
  platform: x86: dell-laptop: Add support for keyboard backlight
  Documentation/ABI: Update sysfs-driver-toshiba_acpi entry
  toshiba_acpi: Fix pr_* messages from USB Sleep Functions
  toshiba_acpi: Update and fix USB Sleep and Charge modes
  wmi: Use bool function return values of true/false not 1/0
  toshiba_bluetooth: Fix enabling/disabling loop on recent devices
  toshiba_bluetooth: Clean up *_add function and disable BT device at removal
  toshiba_bluetooth: Add three new functions to the driver
  toshiba_acpi: Fix the enabling of the Special Functions
  toshiba_acpi: Use the Hotkey Event Type function for keymap choosing
  toshiba_acpi: Add Hotkey Event Type function and definitions
  x86/wmi: delete unused wmi_data_lock mutex causing gcc warning
  apple-gmux: lock iGP IO to protect from vgaarb changes
  MAINTAINERS: Add missing Toshiba devices and add myself as maintainer
  toshiba_acpi: Update events in toshiba_acpi_notify
  intel-oaktrail: Fix trivial typo in comment
  thinkpad_acpi: off by one in adaptive_keyboard_hotkey_notify_hotkey()
  thinkpad_acpi: signedness bugs getting current_mode
  ...

8 files changed, 1650 insertions, 204 deletions

diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 97527614141b..f9f205cb1f11 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -614,6 +614,7 @@ config ACPI_TOSHIBA
 	depends on INPUT
 	depends on RFKILL || RFKILL = n
 	depends on SERIO_I8042 || SERIO_I8042 = n
+	depends on ACPI_VIDEO || ACPI_VIDEO = n
 	select INPUT_POLLDEV
 	select INPUT_SPARSEKMAP
 	---help---
diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c
index 66d6d22c239c..6808715003f6 100644
--- a/drivers/platform/x86/apple-gmux.c
+++ b/drivers/platform/x86/apple-gmux.c
@@ -22,6 +22,7 @@
 #include <linux/delay.h>
 #include <linux/pci.h>
 #include <linux/vga_switcheroo.h>
+#include <linux/vgaarb.h>
 #include <acpi/video.h>
 #include <asm/io.h>
 
@@ -31,6 +32,7 @@ struct apple_gmux_data {
 	bool indexed;
 	struct mutex index_lock;
 
+	struct pci_dev *pdev;
 	struct backlight_device *bdev;
 
 	/* switcheroo data */
@@ -415,6 +417,23 @@ static int gmux_resume(struct device *dev)
 	return 0;
 }
 
+static struct pci_dev *gmux_get_io_pdev(void)
+{
+	struct pci_dev *pdev = NULL;
+
+	while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev))) {
+		u16 cmd;
+
+		pci_read_config_word(pdev, PCI_COMMAND, &cmd);
+		if (!(cmd & PCI_COMMAND_IO))
+			continue;
+
+		return pdev;
+	}
+
+	return NULL;
+}
+
 static int gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
 {
 	struct apple_gmux_data *gmux_data;
@@ -425,6 +444,7 @@ static int gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
 	int ret = -ENXIO;
 	acpi_status status;
 	unsigned long long gpe;
+	struct pci_dev *pdev = NULL;
 
 	if (apple_gmux_data)
 		return -EBUSY;
@@ -475,7 +495,7 @@ static int gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
 			ver_minor = (version >> 16) & 0xff;
 			ver_release = (version >> 8) & 0xff;
 		} else {
-			pr_info("gmux device not present\n");
+			pr_info("gmux device not present or IO disabled\n");
 			ret = -ENODEV;
 			goto err_release;
 		}
@@ -483,6 +503,23 @@ static int gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
 	pr_info("Found gmux version %d.%d.%d [%s]\n", ver_major, ver_minor,
 		ver_release, (gmux_data->indexed ? "indexed" : "classic"));
 
+	/*
+	 * Apple systems with gmux are EFI based and normally don't use
+	 * VGA. In addition changing IO+MEM ownership between IGP and dGPU
+	 * disables IO/MEM used for backlight control on some systems.
+	 * Lock IO+MEM to GPU with active IO to prevent switch.
+	 */
+	pdev = gmux_get_io_pdev();
+	if (pdev && vga_tryget(pdev,
+			       VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM)) {
+		pr_err("IO+MEM vgaarb-locking for PCI:%s failed\n",
+			pci_name(pdev));
+		ret = -EBUSY;
+		goto err_release;
+	} else if (pdev)
+		pr_info("locked IO for PCI:%s\n", pci_name(pdev));
+	gmux_data->pdev = pdev;
+
 	memset(&props, 0, sizeof(props));
 	props.type = BACKLIGHT_PLATFORM;
 	props.max_brightness = gmux_read32(gmux_data, GMUX_PORT_MAX_BRIGHTNESS);
@@ -574,6 +611,10 @@ err_enable_gpe:
 err_notify:
 	backlight_device_unregister(bdev);
 err_release:
+	if (gmux_data->pdev)
+		vga_put(gmux_data->pdev,
+			VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM);
+	pci_dev_put(pdev);
 	release_region(gmux_data->iostart, gmux_data->iolen);
 err_free:
 	kfree(gmux_data);
@@ -593,6 +634,11 @@ static void gmux_remove(struct pnp_dev *pnp)
 					   &gmux_notify_handler);
 	}
 
+	if (gmux_data->pdev) {
+		vga_put(gmux_data->pdev,
+			VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM);
+		pci_dev_put(gmux_data->pdev);
+	}
 	backlight_device_unregister(gmux_data->bdev);
 
 	release_region(gmux_data->iostart, gmux_data->iolen);
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index 3d21efe11d7b..d688d806a8a5 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -2,9 +2,11 @@
  *  Driver for Dell laptop extras
  *
  *  Copyright (c) Red Hat <mjg@redhat.com>
+ *  Copyright (c) 2014 Gabriele Mazzotta <gabriele.mzt@gmail.com>
+ *  Copyright (c) 2014 Pali Rohár <pali.rohar@gmail.com>
  *
- *  Based on documentation in the libsmbios package, Copyright (C) 2005 Dell
- *  Inc.
+ *  Based on documentation in the libsmbios package:
+ *  Copyright (C) 2005-2014 Dell Inc.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2 as
@@ -32,6 +34,13 @@
 #include "../../firmware/dcdbas.h"
 
 #define BRIGHTNESS_TOKEN 0x7d
+#define KBD_LED_OFF_TOKEN 0x01E1
+#define KBD_LED_ON_TOKEN 0x01E2
+#define KBD_LED_AUTO_TOKEN 0x01E3
+#define KBD_LED_AUTO_25_TOKEN 0x02EA
+#define KBD_LED_AUTO_50_TOKEN 0x02EB
+#define KBD_LED_AUTO_75_TOKEN 0x02EC
+#define KBD_LED_AUTO_100_TOKEN 0x02F6
 
 /* This structure will be modified by the firmware when we enter
  * system management mode, hence the volatiles */
@@ -62,6 +71,13 @@ struct calling_interface_structure {
 
 struct quirk_entry {
 	u8 touchpad_led;
+
+	int needs_kbd_timeouts;
+	/*
+	 * Ordered list of timeouts expressed in seconds.
+	 * The list must end with -1
+	 */
+	int kbd_timeouts[];
 };
 
 static struct quirk_entry *quirks;
@@ -76,6 +92,15 @@ static int __init dmi_matched(const struct dmi_system_id *dmi)
 	return 1;
 }
 
+/*
+ * These values come from Windows utility provided by Dell. If any other value
+ * is used then BIOS silently set timeout to 0 without any error message.
+ */
+static struct quirk_entry quirk_dell_xps13_9333 = {
+	.needs_kbd_timeouts = 1,
+	.kbd_timeouts = { 0, 5, 15, 60, 5 * 60, 15 * 60, -1 },
+};
+
 static int da_command_address;
 static int da_command_code;
 static int da_num_tokens;
@@ -267,6 +292,15 @@ static const struct dmi_system_id dell_quirks[] __initconst = {
 		},
 		.driver_data = &quirk_dell_vostro_v130,
 	},
+	{
+		.callback = dmi_matched,
+		.ident = "Dell XPS13 9333",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "XPS13 9333"),
+		},
+		.driver_data = &quirk_dell_xps13_9333,
+	},
 	{ }
 };
 
@@ -331,17 +365,29 @@ static void __init find_tokens(const struct dmi_header *dm, void *dummy)
 	}
 }
 
-static int find_token_location(int tokenid)
+static int find_token_id(int tokenid)
 {
 	int i;
+
 	for (i = 0; i < da_num_tokens; i++) {
 		if (da_tokens[i].tokenID == tokenid)
-			return da_tokens[i].location;
+			return i;
 	}
 
 	return -1;
 }
 
+static int find_token_location(int tokenid)
+{
+	int id;
+
+	id = find_token_id(tokenid);
+	if (id == -1)
+		return -1;
+
+	return da_tokens[id].location;
+}
+
 static struct calling_interface_buffer *
 dell_send_request(struct calling_interface_buffer *buffer, int class,
 		  int select)
@@ -362,6 +408,20 @@ dell_send_request(struct calling_interface_buffer *buffer, int class,
 	return buffer;
 }
 
+static inline int dell_smi_error(int value)
+{
+	switch (value) {
+	case 0: /* Completed successfully */
+		return 0;
+	case -1: /* Completed with error */
+		return -EIO;
+	case -2: /* Function not supported */
+		return -ENXIO;
+	default: /* Unknown error */
+		return -EINVAL;
+	}
+}
+
 /* Derived from information in DellWirelessCtl.cpp:
    Class 17, select 11 is radio control. It returns an array of 32-bit values.
 
@@ -716,7 +776,7 @@ static int dell_send_intensity(struct backlight_device *bd)
 	else
 		dell_send_request(buffer, 1, 1);
 
-out:
+ out:
 	release_buffer();
 	return ret;
 }
@@ -740,7 +800,7 @@ static int dell_get_intensity(struct backlight_device *bd)
 
 	ret = buffer->output[1];
 
-out:
+ out:
 	release_buffer();
 	return ret;
 }
@@ -789,6 +849,1018 @@ static void touchpad_led_exit(void)
 	led_classdev_unregister(&touchpad_led);
 }
 
+/*
+ * Derived from information in smbios-keyboard-ctl:
+ *
+ * cbClass 4
+ * cbSelect 11
+ * Keyboard illumination
+ * cbArg1 determines the function to be performed
+ *
+ * cbArg1 0x0 = Get Feature Information
+ *  cbRES1         Standard return codes (0, -1, -2)
+ *  cbRES2, word0  Bitmap of user-selectable modes
+ *     bit 0     Always off (All systems)
+ *     bit 1     Always on (Travis ATG, Siberia)
+ *     bit 2     Auto: ALS-based On; ALS-based Off (Travis ATG)
+ *     bit 3     Auto: ALS- and input-activity-based On; input-activity based Off
+ *     bit 4     Auto: Input-activity-based On; input-activity based Off
+ *     bit 5     Auto: Input-activity-based On (illumination level 25%); input-activity based Off
+ *     bit 6     Auto: Input-activity-based On (illumination level 50%); input-activity based Off
+ *     bit 7     Auto: Input-activity-based On (illumination level 75%); input-activity based Off
+ *     bit 8     Auto: Input-activity-based On (illumination level 100%); input-activity based Off
+ *     bits 9-15 Reserved for future use
+ *  cbRES2, byte2  Reserved for future use
+ *  cbRES2, byte3  Keyboard illumination type
+ *     0         Reserved
+ *     1         Tasklight
+ *     2         Backlight
+ *     3-255     Reserved for future use
+ *  cbRES3, byte0  Supported auto keyboard illumination trigger bitmap.
+ *     bit 0     Any keystroke
+ *     bit 1     Touchpad activity
+ *     bit 2     Pointing stick
+ *     bit 3     Any mouse
+ *     bits 4-7  Reserved for future use
+ *  cbRES3, byte1  Supported timeout unit bitmap
+ *     bit 0     Seconds
+ *     bit 1     Minutes
+ *     bit 2     Hours
+ *     bit 3     Days
+ *     bits 4-7  Reserved for future use
+ *  cbRES3, byte2  Number of keyboard light brightness levels
+ *  cbRES4, byte0  Maximum acceptable seconds value (0 if seconds not supported).
+ *  cbRES4, byte1  Maximum acceptable minutes value (0 if minutes not supported).
+ *  cbRES4, byte2  Maximum acceptable hours value (0 if hours not supported).
+ *  cbRES4, byte3  Maximum acceptable days value (0 if days not supported)
+ *
+ * cbArg1 0x1 = Get Current State
+ *  cbRES1         Standard return codes (0, -1, -2)
+ *  cbRES2, word0  Bitmap of current mode state
+ *     bit 0     Always off (All systems)
+ *     bit 1     Always on (Travis ATG, Siberia)
+ *     bit 2     Auto: ALS-based On; ALS-based Off (Travis ATG)
+ *     bit 3     Auto: ALS- and input-activity-based On; input-activity based Off
+ *     bit 4     Auto: Input-activity-based On; input-activity based Off
+ *     bit 5     Auto: Input-activity-based On (illumination level 25%); input-activity based Off
+ *     bit 6     Auto: Input-activity-based On (illumination level 50%); input-activity based Off
+ *     bit 7     Auto: Input-activity-based On (illumination level 75%); input-activity based Off
+ *     bit 8     Auto: Input-activity-based On (illumination level 100%); input-activity based Off
+ *     bits 9-15 Reserved for future use
+ *     Note: Only One bit can be set
+ *  cbRES2, byte2  Currently active auto keyboard illumination triggers.
+ *     bit 0     Any keystroke
+ *     bit 1     Touchpad activity
+ *     bit 2     Pointing stick
+ *     bit 3     Any mouse
+ *     bits 4-7  Reserved for future use
+ *  cbRES2, byte3  Current Timeout
+ *     bits 7:6  Timeout units indicator:
+ *     00b       Seconds
+ *     01b       Minutes
+ *     10b       Hours
+ *     11b       Days
+ *     bits 5:0  Timeout value (0-63) in sec/min/hr/day
+ *     NOTE: A value of 0 means always on (no timeout) if any bits of RES3 byte
+ *     are set upon return from the [Get feature information] call.
+ *  cbRES3, byte0  Current setting of ALS value that turns the light on or off.
+ *  cbRES3, byte1  Current ALS reading
+ *  cbRES3, byte2  Current keyboard light level.
+ *
+ * cbArg1 0x2 = Set New State
+ *  cbRES1         Standard return codes (0, -1, -2)
+ *  cbArg2, word0  Bitmap of current mode state
+ *     bit 0     Always off (All systems)
+ *     bit 1     Always on (Travis ATG, Siberia)
+ *     bit 2     Auto: ALS-based On; ALS-based Off (Travis ATG)
+ *     bit 3     Auto: ALS- and input-activity-based On; input-activity based Off
+ *     bit 4     Auto: Input-activity-based On; input-activity based Off
+ *     bit 5     Auto: Input-activity-based On (illumination level 25%); input-activity based Off
+ *     bit 6     Auto: Input-activity-based On (illumination level 50%); input-activity based Off
+ *     bit 7     Auto: Input-activity-based On (illumination level 75%); input-activity based Off
+ *     bit 8     Auto: Input-activity-based On (illumination level 100%); input-activity based Off
+ *     bits 9-15 Reserved for future use
+ *     Note: Only One bit can be set
+ *  cbArg2, byte2  Desired auto keyboard illumination triggers. Must remain inactive to allow
+ *                 keyboard to turn off automatically.
+ *     bit 0     Any keystroke
+ *     bit 1     Touchpad activity
+ *     bit 2     Pointing stick
+ *     bit 3     Any mouse
+ *     bits 4-7  Reserved for future use
+ *  cbArg2, byte3  Desired Timeout
+ *     bits 7:6  Timeout units indicator:
+ *     00b       Seconds
+ *     01b       Minutes
+ *     10b       Hours
+ *     11b       Days
+ *     bits 5:0  Timeout value (0-63) in sec/min/hr/day
+ *  cbArg3, byte0  Desired setting of ALS value that turns the light on or off.
+ *  cbArg3, byte2  Desired keyboard light level.
+ */
+
+
+enum kbd_timeout_unit {
+	KBD_TIMEOUT_SECONDS = 0,
+	KBD_TIMEOUT_MINUTES,
+	KBD_TIMEOUT_HOURS,
+	KBD_TIMEOUT_DAYS,
+};
+
+enum kbd_mode_bit {
+	KBD_MODE_BIT_OFF = 0,
+	KBD_MODE_BIT_ON,
+	KBD_MODE_BIT_ALS,
+	KBD_MODE_BIT_TRIGGER_ALS,
+	KBD_MODE_BIT_TRIGGER,
+	KBD_MODE_BIT_TRIGGER_25,
+	KBD_MODE_BIT_TRIGGER_50,
+	KBD_MODE_BIT_TRIGGER_75,
+	KBD_MODE_BIT_TRIGGER_100,
+};
+
+#define kbd_is_als_mode_bit(bit) \
+	((bit) == KBD_MODE_BIT_ALS || (bit) == KBD_MODE_BIT_TRIGGER_ALS)
+#define kbd_is_trigger_mode_bit(bit) \
+	((bit) >= KBD_MODE_BIT_TRIGGER_ALS && (bit) <= KBD_MODE_BIT_TRIGGER_100)
+#define kbd_is_level_mode_bit(bit) \
+	((bit) >= KBD_MODE_BIT_TRIGGER_25 && (bit) <= KBD_MODE_BIT_TRIGGER_100)
+
+struct kbd_info {
+	u16 modes;
+	u8 type;
+	u8 triggers;
+	u8 levels;
+	u8 seconds;
+	u8 minutes;
+	u8 hours;
+	u8 days;
+};
+
+struct kbd_state {
+	u8 mode_bit;
+	u8 triggers;
+	u8 timeout_value;
+	u8 timeout_unit;
+	u8 als_setting;
+	u8 als_value;
+	u8 level;
+};
+
+static const int kbd_tokens[] = {
+	KBD_LED_OFF_TOKEN,
+	KBD_LED_AUTO_25_TOKEN,
+	KBD_LED_AUTO_50_TOKEN,
+	KBD_LED_AUTO_75_TOKEN,
+	KBD_LED_AUTO_100_TOKEN,
+	KBD_LED_ON_TOKEN,
+};
+
+static u16 kbd_token_bits;
+
+static struct kbd_info kbd_info;
+static bool kbd_als_supported;
+static bool kbd_triggers_supported;
+
+static u8 kbd_mode_levels[16];
+static int kbd_mode_levels_count;
+
+static u8 kbd_previous_level;
+static u8 kbd_previous_mode_bit;
+
+static bool kbd_led_present;
+
+/*
+ * NOTE: there are three ways to set the keyboard backlight level.
+ * First, via kbd_state.mode_bit (assigning KBD_MODE_BIT_TRIGGER_* value).
+ * Second, via kbd_state.level (assigning numerical value <= kbd_info.levels).
+ * Third, via SMBIOS tokens (KBD_LED_* in kbd_tokens)
+ *
+ * There are laptops which support only one of these methods. If we want to
+ * support as many machines as possible we need to implement all three methods.
+ * The first two methods use the kbd_state structure. The third uses SMBIOS
+ * tokens. If kbd_info.levels == 0, the machine does not support setting the
+ * keyboard backlight level via kbd_state.level.
+ */
+
+static int kbd_get_info(struct kbd_info *info)
+{
+	u8 units;
+	int ret;
+
+	get_buffer();
+
+	buffer->input[0] = 0x0;
+	dell_send_request(buffer, 4, 11);
+	ret = buffer->output[0];
+
+	if (ret) {
+		ret = dell_smi_error(ret);
+		goto out;
+	}
+
+	info->modes = buffer->output[1] & 0xFFFF;
+	info->type = (buffer->output[1] >> 24) & 0xFF;
+	info->triggers = buffer->output[2] & 0xFF;
+	units = (buffer->output[2] >> 8) & 0xFF;
+	info->levels = (buffer->output[2] >> 16) & 0xFF;
+
+	if (units & BIT(0))
+		info->seconds = (buffer->output[3] >> 0) & 0xFF;
+	if (units & BIT(1))
+		info->minutes = (buffer->output[3] >> 8) & 0xFF;
+	if (units & BIT(2))
+		info->hours = (buffer->output[3] >> 16) & 0xFF;
+	if (units & BIT(3))
+		info->days = (buffer->output[3] >> 24) & 0xFF;
+
+ out:
+	release_buffer();
+	return ret;
+}
+
+static unsigned int kbd_get_max_level(void)
+{
+	if (kbd_info.levels != 0)
+		return kbd_info.levels;
+	if (kbd_mode_levels_count > 0)
+		return kbd_mode_levels_count - 1;
+	return 0;
+}
+
+static int kbd_get_level(struct kbd_state *state)
+{
+	int i;
+
+	if (kbd_info.levels != 0)
+		return state->level;
+
+	if (kbd_mode_levels_count > 0) {
+		for (i = 0; i < kbd_mode_levels_count; ++i)
+			if (kbd_mode_levels[i] == state->mode_bit)
+				return i;
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int kbd_set_level(struct kbd_state *state, u8 level)
+{
+	if (kbd_info.levels != 0) {
+		if (level != 0)
+			kbd_previous_level = level;
+		if (state->level == level)
+			return 0;
+		state->level = level;
+		if (level != 0 && state->mode_bit == KBD_MODE_BIT_OFF)
+			state->mode_bit = kbd_previous_mode_bit;
+		else if (level == 0 && state->mode_bit != KBD_MODE_BIT_OFF) {
+			kbd_previous_mode_bit = state->mode_bit;
+			state->mode_bit = KBD_MODE_BIT_OFF;
+		}
+		return 0;
+	}
+
+	if (kbd_mode_levels_count > 0 && level < kbd_mode_levels_count) {
+		if (level != 0)
+			kbd_previous_level = level;
+		state->mode_bit = kbd_mode_levels[level];
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int kbd_get_state(struct kbd_state *state)
+{
+	int ret;
+
+	get_buffer();
+
+	buffer->input[0] = 0x1;
+	dell_send_request(buffer, 4, 11);
+	ret = buffer->output[0];
+
+	if (ret) {
+		ret = dell_smi_error(ret);
+		goto out;
+	}
+
+	state->mode_bit = ffs(buffer->output[1] & 0xFFFF);
+	if (state->mode_bit != 0)
+		state->mode_bit--;
+
+	state->triggers = (buffer->output[1] >> 16) & 0xFF;
+	state->timeout_value = (buffer->output[1] >> 24) & 0x3F;
+	state->timeout_unit = (buffer->output[1] >> 30) & 0x3;
+	state->als_setting = buffer->output[2] & 0xFF;
+	state->als_value = (buffer->output[2] >> 8) & 0xFF;
+	state->level = (buffer->output[2] >> 16) & 0xFF;
+
+ out:
+	release_buffer();
+	return ret;
+}
+
+static int kbd_set_state(struct kbd_state *state)
+{
+	int ret;
+
+	get_buffer();
+	buffer->input[0] = 0x2;
+	buffer->input[1] = BIT(state->mode_bit) & 0xFFFF;
+	buffer->input[1] |= (state->triggers & 0xFF) << 16;
+	buffer->input[1] |= (state->timeout_value & 0x3F) << 24;
+	buffer->input[1] |= (state->timeout_unit & 0x3) << 30;
+	buffer->input[2] = state->als_setting & 0xFF;
+	buffer->input[2] |= (state->level & 0xFF) << 16;
+	dell_send_request(buffer, 4, 11);
+	ret = buffer->output[0];
+	release_buffer();
+
+	return dell_smi_error(ret);
+}
+
+static int kbd_set_state_safe(struct kbd_state *state, struct kbd_state *old)
+{
+	int ret;
+
+	ret = kbd_set_state(state);
+	if (ret == 0)
+		return 0;
+
+	/*
+	 * When setting the new state fails,try to restore the previous one.
+	 * This is needed on some machines where BIOS sets a default state when
+	 * setting a new state fails. This default state could be all off.
+	 */
+
+	if (kbd_set_state(old))
+		pr_err("Setting old previous keyboard state failed\n");
+
+	return ret;
+}
+
+static int kbd_set_token_bit(u8 bit)
+{
+	int id;
+	int ret;
+
+	if (bit >= ARRAY_SIZE(kbd_tokens))
+		return -EINVAL;
+
+	id = find_token_id(kbd_tokens[bit]);
+	if (id == -1)
+		return -EINVAL;
+
+	get_buffer();
+	buffer->input[0] = da_tokens[id].location;
+	buffer->input[1] = da_tokens[id].value;
+	dell_send_request(buffer, 1, 0);
+	ret = buffer->output[0];
+	release_buffer();
+
+	return dell_smi_error(ret);
+}
+
+static int kbd_get_token_bit(u8 bit)
+{
+	int id;
+	int ret;
+	int val;
+
+	if (bit >= ARRAY_SIZE(kbd_tokens))
+		return -EINVAL;
+
+	id = find_token_id(kbd_tokens[bit]);
+	if (id == -1)
+		return -EINVAL;
+
+	get_buffer();
+	buffer->input[0] = da_tokens[id].location;
+	dell_send_request(buffer, 0, 0);
+	ret = buffer->output[0];
+	val = buffer->output[1];
+	release_buffer();
+
+	if (ret)
+		return dell_smi_error(ret);
+
+	return (val == da_tokens[id].value);
+}
+
+static int kbd_get_first_active_token_bit(void)
+{
+	int i;
+	int ret;
+
+	for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i) {
+		ret = kbd_get_token_bit(i);
+		if (ret == 1)
+			return i;
+	}
+
+	return ret;
+}
+
+static int kbd_get_valid_token_counts(void)
+{
+	return hweight16(kbd_token_bits);
+}
+
+static inline int kbd_init_info(void)
+{
+	struct kbd_state state;
+	int ret;
+	int i;
+
+	ret = kbd_get_info(&kbd_info);
+	if (ret)
+		return ret;
+
+	kbd_get_state(&state);
+
+	/* NOTE: timeout value is stored in 6 bits so max value is 63 */
+	if (kbd_info.seconds > 63)
+		kbd_info.seconds = 63;
+	if (kbd_info.minutes > 63)
+		kbd_info.minutes = 63;
+	if (kbd_info.hours > 63)
+		kbd_info.hours = 63;
+	if (kbd_info.days > 63)
+		kbd_info.days = 63;
+
+	/* NOTE: On tested machines ON mode did not work and caused
+	 *       problems (turned backlight off) so do not use it
+	 */
+	kbd_info.modes &= ~BIT(KBD_MODE_BIT_ON);
+
+	kbd_previous_level = kbd_get_level(&state);
+	kbd_previous_mode_bit = state.mode_bit;
+
+	if (kbd_previous_level == 0 && kbd_get_max_level() != 0)
+		kbd_previous_level = 1;
+
+	if (kbd_previous_mode_bit == KBD_MODE_BIT_OFF) {
+		kbd_previous_mode_bit =
+			ffs(kbd_info.modes & ~BIT(KBD_MODE_BIT_OFF));
+		if (kbd_previous_mode_bit != 0)
+			kbd_previous_mode_bit--;
+	}
+
+	if (kbd_info.modes & (BIT(KBD_MODE_BIT_ALS) |
+			      BIT(KBD_MODE_BIT_TRIGGER_ALS)))
+		kbd_als_supported = true;
+
+	if (kbd_info.modes & (
+	    BIT(KBD_MODE_BIT_TRIGGER_ALS) | BIT(KBD_MODE_BIT_TRIGGER) |
+	    BIT(KBD_MODE_BIT_TRIGGER_25) | BIT(KBD_MODE_BIT_TRIGGER_50) |
+	    BIT(KBD_MODE_BIT_TRIGGER_75) | BIT(KBD_MODE_BIT_TRIGGER_100)
+	   ))
+		kbd_triggers_supported = true;
+
+	/* kbd_mode_levels[0] is reserved, see below */
+	for (i = 0; i < 16; ++i)
+		if (kbd_is_level_mode_bit(i) && (BIT(i) & kbd_info.modes))
+			kbd_mode_levels[1 + kbd_mode_levels_count++] = i;
+
+	/*
+	 * Find the first supported mode and assign to kbd_mode_levels[0].
+	 * This should be 0 (off), but we cannot depend on the BIOS to
+	 * support 0.
+	 */
+	if (kbd_mode_levels_count > 0) {
+		for (i = 0; i < 16; ++i) {
+			if (BIT(i) & kbd_info.modes) {
+				kbd_mode_levels[0] = i;
+				break;
+			}
+		}
+		kbd_mode_levels_count++;
+	}
+
+	return 0;
+
+}
+
+static inline void kbd_init_tokens(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i)
+		if (find_token_id(kbd_tokens[i]) != -1)
+			kbd_token_bits |= BIT(i);
+}
+
+static void kbd_init(void)
+{
+	int ret;
+
+	ret = kbd_init_info();
+	kbd_init_tokens();
+
+	if (kbd_token_bits != 0 || ret == 0)
+		kbd_led_present = true;
+}
+
+static ssize_t kbd_led_timeout_store(struct device *dev,
+				     struct device_attribute *attr,
+				     const char *buf, size_t count)
+{
+	struct kbd_state new_state;
+	struct kbd_state state;
+	bool convert;
+	int value;
+	int ret;
+	char ch;
+	u8 unit;
+	int i;
+
+	ret = sscanf(buf, "%d %c", &value, &ch);
+	if (ret < 1)
+		return -EINVAL;
+	else if (ret == 1)
+		ch = 's';
+
+	if (value < 0)
+		return -EINVAL;
+
+	convert = false;
+
+	switch (ch) {
+	case 's':
+		if (value > kbd_info.seconds)
+			convert = true;
+		unit = KBD_TIMEOUT_SECONDS;
+		break;
+	case 'm':
+		if (value > kbd_info.minutes)
+			convert = true;
+		unit = KBD_TIMEOUT_MINUTES;
+		break;
+	case 'h':
+		if (value > kbd_info.hours)
+			convert = true;
+		unit = KBD_TIMEOUT_HOURS;
+		break;
+	case 'd':
+		if (value > kbd_info.days)
+			convert = true;
+		unit = KBD_TIMEOUT_DAYS;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (quirks && quirks->needs_kbd_timeouts)
+		convert = true;
+
+	if (convert) {
+		/* Convert value from current units to seconds */
+		switch (unit) {
+		case KBD_TIMEOUT_DAYS:
+			value *= 24;
+		case KBD_TIMEOUT_HOURS:
+			value *= 60;
+		case KBD_TIMEOUT_MINUTES:
+			value *= 60;
+			unit = KBD_TIMEOUT_SECONDS;
+		}
+
+		if (quirks && quirks->needs_kbd_timeouts) {
+			for (i = 0; quirks->kbd_timeouts[i] != -1; i++) {
+				if (value <= quirks->kbd_timeouts[i]) {
+					value = quirks->kbd_timeouts[i];
+					break;
+				}
+			}
+		}
+
+		if (value <= kbd_info.seconds && kbd_info.seconds) {
+			unit = KBD_TIMEOUT_SECONDS;
+		} else if (value / 60 <= kbd_info.minutes && kbd_info.minutes) {
+			value /= 60;
+			unit = KBD_TIMEOUT_MINUTES;
+		} else if (value / (60 * 60) <= kbd_info.hours && kbd_info.hours) {
+			value /= (60 * 60);
+			unit = KBD_TIMEOUT_HOURS;
+		} else if (value / (60 * 60 * 24) <= kbd_info.days && kbd_info.days) {
+			value /= (60 * 60 * 24);
+			unit = KBD_TIMEOUT_DAYS;
+		} else {
+			return -EINVAL;
+		}
+	}
+
+	ret = kbd_get_state(&state);
+	if (ret)
+		return ret;
+
+	new_state = state;
+	new_state.timeout_value = value;
+	new_state.timeout_unit = unit;
+
+	ret = kbd_set_state_safe(&new_state, &state);
+	if (ret)
+		return ret;
+
+	return count;
+}
+
+static ssize_t kbd_led_timeout_show(struct device *dev,
+				    struct device_attribute *attr, char *buf)
+{
+	struct kbd_state state;
+	int ret;
+	int len;
+
+	ret = kbd_get_state(&state);
+	if (ret)
+		return ret;
+
+	len = sprintf(buf, "%d", state.timeout_value);
+
+	switch (state.timeout_unit) {
+	case KBD_TIMEOUT_SECONDS:
+		return len + sprintf(buf+len, "s\n");
+	case KBD_TIMEOUT_MINUTES:
+		return len + sprintf(buf+len, "m\n");
+	case KBD_TIMEOUT_HOURS:
+		return len + sprintf(buf+len, "h\n");
+	case KBD_TIMEOUT_DAYS:
+		return len + sprintf(buf+len, "d\n");
+	default:
+		return -EINVAL;
+	}
+
+	return len;
+}
+
+static DEVICE_ATTR(stop_timeout, S_IRUGO | S_IWUSR,
+		   kbd_led_timeout_show, kbd_led_timeout_store);
+
+static const char * const kbd_led_triggers[] = {
+	"keyboard",
+	"touchpad",
+	/*"trackstick"*/ NULL, /* NOTE: trackstick is just alias for touchpad */
+	"mouse",
+};
+
+static ssize_t kbd_led_triggers_store(struct device *dev,
+				      struct device_attribute *attr,
+				      const char *buf, size_t count)
+{
+	struct kbd_state new_state;
+	struct kbd_state state;
+	bool triggers_enabled = false;
+	int trigger_bit = -1;
+	char trigger[21];
+	int i, ret;
+
+	ret = sscanf(buf, "%20s", trigger);
+	if (ret != 1)
+		return -EINVAL;
+
+	if (trigger[0] != '+' && trigger[0] != '-')
+		return -EINVAL;
+
+	ret = kbd_get_state(&state);
+	if (ret)
+		return ret;
+
+	if (kbd_triggers_supported)
+		triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit);
+
+	if (kbd_triggers_supported) {
+		for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) {
+			if (!(kbd_info.triggers & BIT(i)))
+				continue;
+			if (!kbd_led_triggers[i])
+				continue;
+			if (strcmp(trigger+1, kbd_led_triggers[i]) != 0)
+				continue;
+			if (trigger[0] == '+' &&
+			    triggers_enabled && (state.triggers & BIT(i)))
+				return count;
+			if (trigger[0] == '-' &&
+			    (!triggers_enabled || !(state.triggers & BIT(i))))
+				return count;
+			trigger_bit = i;
+			break;
+		}
+	}
+
+	if (trigger_bit != -1) {
+		new_state = state;
+		if (trigger[0] == '+')
+			new_state.triggers |= BIT(trigger_bit);
+		else {
+			new_state.triggers &= ~BIT(trigger_bit);
+			/* NOTE: trackstick bit (2) must be disabled when
+			 *       disabling touchpad bit (1), otherwise touchpad
+			 *       bit (1) will not be disabled */
+			if (trigger_bit == 1)
+				new_state.triggers &= ~BIT(2);
+		}
+		if ((kbd_info.triggers & new_state.triggers) !=
+		    new_state.triggers)
+			return -EINVAL;
+		if (new_state.triggers && !triggers_enabled) {
+			new_state.mode_bit = KBD_MODE_BIT_TRIGGER;
+			kbd_set_level(&new_state, kbd_previous_level);
+		} else if (new_state.triggers == 0) {
+			kbd_set_level(&new_state, 0);
+		}
+		if (!(kbd_info.modes & BIT(new_state.mode_bit)))
+			return -EINVAL;
+		ret = kbd_set_state_safe(&new_state, &state);
+		if (ret)
+			return ret;
+		if (new_state.mode_bit != KBD_MODE_BIT_OFF)
+			kbd_previous_mode_bit = new_state.mode_bit;
+		return count;
+	}
+
+	return -EINVAL;
+}
+
+static ssize_t kbd_led_triggers_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	struct kbd_state state;
+	bool triggers_enabled;
+	int level, i, ret;
+	int len = 0;
+
+	ret = kbd_get_state(&state);
+	if (ret)
+		return ret;
+
+	len = 0;
+
+	if (kbd_triggers_supported) {
+		triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit);
+		level = kbd_get_level(&state);
+		for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) {
+			if (!(kbd_info.triggers & BIT(i)))
+				continue;
+			if (!kbd_led_triggers[i])
+				continue;
+			if ((triggers_enabled || level <= 0) &&
+			    (state.triggers & BIT(i)))
+				buf[len++] = '+';
+			else
+				buf[len++] = '-';
+			len += sprintf(buf+len, "%s ", kbd_led_triggers[i]);
+		}
+	}
+
+	if (len)
+		buf[len - 1] = '\n';
+
+	return len;
+}
+
+static DEVICE_ATTR(start_triggers, S_IRUGO | S_IWUSR,
+		   kbd_led_triggers_show, kbd_led_triggers_store);
+
+static ssize_t kbd_led_als_enabled_store(struct device *dev,
+					 struct device_attribute *attr,
+					 const char *buf, size_t count)
+{
+	struct kbd_state new_state;
+	struct kbd_state state;
+	bool triggers_enabled = false;
+	int enable;
+	int ret;
+
+	ret = kstrtoint(buf, 0, &enable);
+	if (ret)
+		return ret;
+
+	ret = kbd_get_state(&state);
+	if (ret)
+		return ret;
+
+	if (enable == kbd_is_als_mode_bit(state.mode_bit))
+		return count;
+
+	new_state = state;
+
+	if (kbd_triggers_supported)
+		triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit);
+
+	if (enable) {
+		if (triggers_enabled)
+			new_state.mode_bit = KBD_MODE_BIT_TRIGGER_ALS;
+		else
+			new_state.mode_bit = KBD_MODE_BIT_ALS;
+	} else {
+		if (triggers_enabled) {
+			new_state.mode_bit = KBD_MODE_BIT_TRIGGER;
+			kbd_set_level(&new_state, kbd_previous_level);
+		} else {
+			new_state.mode_bit = KBD_MODE_BIT_ON;
+		}
+	}
+	if (!(kbd_info.modes & BIT(new_state.mode_bit)))
+		return -EINVAL;
+
+	ret = kbd_set_state_safe(&new_state, &state);
+	if (ret)
+		return ret;
+	kbd_previous_mode_bit = new_state.mode_bit;
+
+	return count;
+}
+
+static ssize_t kbd_led_als_enabled_show(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct kbd_state state;
+	bool enabled = false;
+	int ret;
+
+	ret = kbd_get_state(&state);
+	if (ret)
+		return ret;
+	enabled = kbd_is_als_mode_bit(state.mode_bit);
+
+	return sprintf(buf, "%d\n", enabled ? 1 : 0);
+}
+
+static DEVICE_ATTR(als_enabled, S_IRUGO | S_IWUSR,
+		   kbd_led_als_enabled_show, kbd_led_als_enabled_store);
+
+static ssize_t kbd_led_als_setting_store(struct device *dev,
+					 struct device_attribute *attr,
+					 const char *buf, size_t count)
+{
+	struct kbd_state state;
+	struct kbd_state new_state;
+	u8 setting;
+	int ret;
+
+	ret = kstrtou8(buf, 10, &setting);
+	if (ret)
+		return ret;
+
+	ret = kbd_get_state(&state);
+	if (ret)
+		return ret;
+
+	new_state = state;
+	new_state.als_setting = setting;
+
+	ret = kbd_set_state_safe(&new_state, &state);
+	if (ret)
+		return ret;
+
+	return count;
+}
+
+static ssize_t kbd_led_als_setting_show(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct kbd_state state;
+	int ret;
+
+	ret = kbd_get_state(&state);
+	if (ret)
+		return ret;
+
+	return sprintf(buf, "%d\n", state.als_setting);
+}
+
+static DEVICE_ATTR(als_setting, S_IRUGO | S_IWUSR,
+		   kbd_led_als_setting_show, kbd_led_als_setting_store);
+
+static struct attribute *kbd_led_attrs[] = {
+	&dev_attr_stop_timeout.attr,
+	&dev_attr_start_triggers.attr,
+	NULL,
+};
+
+static const struct attribute_group kbd_led_group = {
+	.attrs = kbd_led_attrs,
+};
+
+static struct attribute *kbd_led_als_attrs[] = {
+	&dev_attr_als_enabled.attr,
+	&dev_attr_als_setting.attr,
+	NULL,
+};
+
+static const struct attribute_group kbd_led_als_group = {
+	.attrs = kbd_led_als_attrs,
+};
+
+static const struct attribute_group *kbd_led_groups[] = {
+	&kbd_led_group,
+	&kbd_led_als_group,
+	NULL,
+};
+
+static enum led_brightness kbd_led_level_get(struct led_classdev *led_cdev)
+{
+	int ret;
+	u16 num;
+	struct kbd_state state;
+
+	if (kbd_get_max_level()) {
+		ret = kbd_get_state(&state);
+		if (ret)
+			return 0;
+		ret = kbd_get_level(&state);
+		if (ret < 0)
+			return 0;
+		return ret;
+	}
+
+	if (kbd_get_valid_token_counts()) {
+		ret = kbd_get_first_active_token_bit();
+		if (ret < 0)
+			return 0;
+		for (num = kbd_token_bits; num != 0 && ret > 0; --ret)
+			num &= num - 1; /* clear the first bit set */
+		if (num == 0)
+			return 0;
+		return ffs(num) - 1;
+	}
+
+	pr_warn("Keyboard brightness level control not supported\n");
+	return 0;
+}
+
+static void kbd_led_level_set(struct led_classdev *led_cdev,
+			      enum led_brightness value)
+{
+	struct kbd_state state;
+	struct kbd_state new_state;
+	u16 num;
+
+	if (kbd_get_max_level()) {
+		if (kbd_get_state(&state))
+			return;
+		new_state = state;
+		if (kbd_set_level(&new_state, value))
+			return;
+		kbd_set_state_safe(&new_state, &state);
+		return;
+	}
+
+	if (kbd_get_valid_token_counts()) {
+		for (num = kbd_token_bits; num != 0 && value > 0; --value)
+			num &= num - 1; /* clear the first bit set */
+		if (num == 0)
+			return;
+		kbd_set_token_bit(ffs(num) - 1);
+		return;
+	}
+
+	pr_warn("Keyboard brightness level control not supported\n");
+}
+
+static struct led_classdev kbd_led = {
+	.name           = "dell::kbd_backlight",
+	.brightness_set = kbd_led_level_set,
+	.brightness_get = kbd_led_level_get,
+	.groups         = kbd_led_groups,
+};
+
+static int __init kbd_led_init(struct device *dev)
+{
+	kbd_init();
+	if (!kbd_led_present)
+		return -ENODEV;
+	if (!kbd_als_supported)
+		kbd_led_groups[1] = NULL;
+	kbd_led.max_brightness = kbd_get_max_level();
+	if (!kbd_led.max_brightness) {
+		kbd_led.max_brightness = kbd_get_valid_token_counts();
+		if (kbd_led.max_brightness)
+			kbd_led.max_brightness--;
+	}
+	return led_classdev_register(dev, &kbd_led);
+}
+
+static void brightness_set_exit(struct led_classdev *led_cdev,
+				enum led_brightness value)
+{
+	/* Don't change backlight level on exit */
+};
+
+static void kbd_led_exit(void)
+{
+	if (!kbd_led_present)
+		return;
+	kbd_led.brightness_set = brightness_set_exit;
+	led_classdev_unregister(&kbd_led);
+}
+
 static int __init dell_init(void)
 {
 	int max_intensity = 0;
@@ -841,6 +1913,8 @@ static int __init dell_init(void)
 	if (quirks && quirks->touchpad_led)
 		touchpad_led_init(&platform_device->dev);
 
+	kbd_led_init(&platform_device->dev);
+
 	dell_laptop_dir = debugfs_create_dir("dell_laptop", NULL);
 	if (dell_laptop_dir != NULL)
 		debugfs_create_file("rfkill", 0444, dell_laptop_dir, NULL,
@@ -908,6 +1982,7 @@ static void __exit dell_exit(void)
 	debugfs_remove_recursive(dell_laptop_dir);
 	if (quirks && quirks->touchpad_led)
 		touchpad_led_exit();
+	kbd_led_exit();
 	i8042_remove_filter(dell_laptop_i8042_filter);
 	cancel_delayed_work_sync(&dell_rfkill_work);
 	backlight_device_unregister(dell_backlight_device);
@@ -924,5 +1999,7 @@ module_init(dell_init);
 module_exit(dell_exit);
 
 MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
+MODULE_AUTHOR("Gabriele Mazzotta <gabriele.mzt@gmail.com>");
+MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>");
 MODULE_DESCRIPTION("Dell laptop driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/intel_oaktrail.c b/drivers/platform/x86/intel_oaktrail.c
index a4a4258f6134..8037c8b46241 100644
--- a/drivers/platform/x86/intel_oaktrail.c
+++ b/drivers/platform/x86/intel_oaktrail.c
@@ -62,7 +62,7 @@
  * (1 << 1):	Bluetooth enable/disable, RW.
  * (1 << 2):	GPS enable/disable, RW.
  * (1 << 3):	WiFi enable/disable, RW.
- * (1 << 4):	WWAN (3G) enable/disalbe, RW.
+ * (1 << 4):	WWAN (3G) enable/disable, RW.
  * (1 << 5):	Touchscreen enable/disable, Read Only.
  */
 #define OT_EC_DEVICE_STATE_ADDRESS	0xD6
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 3b8ceee7c5cb..7769575345d8 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -319,6 +319,7 @@ static struct {
 	u32 sensors_pdrv_attrs_registered:1;
 	u32 sensors_pdev_attrs_registered:1;
 	u32 hotkey_poll_active:1;
+	u32 has_adaptive_kbd:1;
 } tp_features;
 
 static struct {
@@ -1911,6 +1912,27 @@ enum {	/* hot key scan codes (derived from ACPI DSDT) */
 	TP_ACPI_HOTKEYSCAN_UNK7,
 	TP_ACPI_HOTKEYSCAN_UNK8,
 
+	TP_ACPI_HOTKEYSCAN_MUTE2,
+	TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO,
+	TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL,
+	TP_ACPI_HOTKEYSCAN_CLOUD,
+	TP_ACPI_HOTKEYSCAN_UNK9,
+	TP_ACPI_HOTKEYSCAN_VOICE,
+	TP_ACPI_HOTKEYSCAN_UNK10,
+	TP_ACPI_HOTKEYSCAN_GESTURES,
+	TP_ACPI_HOTKEYSCAN_UNK11,
+	TP_ACPI_HOTKEYSCAN_UNK12,
+	TP_ACPI_HOTKEYSCAN_UNK13,
+	TP_ACPI_HOTKEYSCAN_CONFIG,
+	TP_ACPI_HOTKEYSCAN_NEW_TAB,
+	TP_ACPI_HOTKEYSCAN_RELOAD,
+	TP_ACPI_HOTKEYSCAN_BACK,
+	TP_ACPI_HOTKEYSCAN_MIC_DOWN,
+	TP_ACPI_HOTKEYSCAN_MIC_UP,
+	TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION,
+	TP_ACPI_HOTKEYSCAN_CAMERA_MODE,
+	TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY,
+
 	/* Hotkey keymap size */
 	TPACPI_HOTKEY_MAP_LEN
 };
@@ -2647,9 +2669,7 @@ static ssize_t hotkey_enable_store(struct device *dev,
 	return count;
 }
 
-static struct device_attribute dev_attr_hotkey_enable =
-	__ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
-		hotkey_enable_show, hotkey_enable_store);
+static DEVICE_ATTR_RW(hotkey_enable);
 
 /* sysfs hotkey mask --------------------------------------------------- */
 static ssize_t hotkey_mask_show(struct device *dev,
@@ -2685,9 +2705,7 @@ static ssize_t hotkey_mask_store(struct device *dev,
 	return (res) ? res : count;
 }
 
-static struct device_attribute dev_attr_hotkey_mask =
-	__ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
-		hotkey_mask_show, hotkey_mask_store);
+static DEVICE_ATTR_RW(hotkey_mask);
 
 /* sysfs hotkey bios_enabled ------------------------------------------- */
 static ssize_t hotkey_bios_enabled_show(struct device *dev,
@@ -2697,8 +2715,7 @@ static ssize_t hotkey_bios_enabled_show(struct device *dev,
 	return sprintf(buf, "0\n");
 }
 
-static struct device_attribute dev_attr_hotkey_bios_enabled =
-	__ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
+static DEVICE_ATTR_RO(hotkey_bios_enabled);
 
 /* sysfs hotkey bios_mask ---------------------------------------------- */
 static ssize_t hotkey_bios_mask_show(struct device *dev,
@@ -2710,8 +2727,7 @@ static ssize_t hotkey_bios_mask_show(struct device *dev,
 	return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
 }
 
-static struct device_attribute dev_attr_hotkey_bios_mask =
-	__ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
+static DEVICE_ATTR_RO(hotkey_bios_mask);
 
 /* sysfs hotkey all_mask ----------------------------------------------- */
 static ssize_t hotkey_all_mask_show(struct device *dev,
@@ -2722,8 +2738,7 @@ static ssize_t hotkey_all_mask_show(struct device *dev,
 				hotkey_all_mask | hotkey_source_mask);
 }
 
-static struct device_attribute dev_attr_hotkey_all_mask =
-	__ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
+static DEVICE_ATTR_RO(hotkey_all_mask);
 
 /* sysfs hotkey recommended_mask --------------------------------------- */
 static ssize_t hotkey_recommended_mask_show(struct device *dev,
@@ -2735,9 +2750,7 @@ static ssize_t hotkey_recommended_mask_show(struct device *dev,
 			& ~hotkey_reserved_mask);
 }
 
-static struct device_attribute dev_attr_hotkey_recommended_mask =
-	__ATTR(hotkey_recommended_mask, S_IRUGO,
-		hotkey_recommended_mask_show, NULL);
+static DEVICE_ATTR_RO(hotkey_recommended_mask);
 
 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
 
@@ -2792,9 +2805,7 @@ static ssize_t hotkey_source_mask_store(struct device *dev,
 	return (rc < 0) ? rc : count;
 }
 
-static struct device_attribute dev_attr_hotkey_source_mask =
-	__ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
-		hotkey_source_mask_show, hotkey_source_mask_store);
+static DEVICE_ATTR_RW(hotkey_source_mask);
 
 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
 static ssize_t hotkey_poll_freq_show(struct device *dev,
@@ -2826,9 +2837,7 @@ static ssize_t hotkey_poll_freq_store(struct device *dev,
 	return count;
 }
 
-static struct device_attribute dev_attr_hotkey_poll_freq =
-	__ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
-		hotkey_poll_freq_show, hotkey_poll_freq_store);
+static DEVICE_ATTR_RW(hotkey_poll_freq);
 
 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
 
@@ -2849,8 +2858,7 @@ static ssize_t hotkey_radio_sw_show(struct device *dev,
 			(res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
 }
 
-static struct device_attribute dev_attr_hotkey_radio_sw =
-	__ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
+static DEVICE_ATTR_RO(hotkey_radio_sw);
 
 static void hotkey_radio_sw_notify_change(void)
 {
@@ -2872,8 +2880,7 @@ static ssize_t hotkey_tablet_mode_show(struct device *dev,
 	return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
 }
 
-static struct device_attribute dev_attr_hotkey_tablet_mode =
-	__ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
+static DEVICE_ATTR_RO(hotkey_tablet_mode);
 
 static void hotkey_tablet_mode_notify_change(void)
 {
@@ -2890,8 +2897,7 @@ static ssize_t hotkey_wakeup_reason_show(struct device *dev,
 	return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
 }
 
-static struct device_attribute dev_attr_hotkey_wakeup_reason =
-	__ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
+static DEVICE_ATTR_RO(hotkey_wakeup_reason);
 
 static void hotkey_wakeup_reason_notify_change(void)
 {
@@ -2907,9 +2913,7 @@ static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
 	return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
 }
 
-static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
-	__ATTR(wakeup_hotunplug_complete, S_IRUGO,
-	       hotkey_wakeup_hotunplug_complete_show, NULL);
+static DEVICE_ATTR_RO(hotkey_wakeup_hotunplug_complete);
 
 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
 {
@@ -2917,6 +2921,57 @@ static void hotkey_wakeup_hotunplug_complete_notify_change(void)
 		     "wakeup_hotunplug_complete");
 }
 
+/* sysfs adaptive kbd mode --------------------------------------------- */
+
+static int adaptive_keyboard_get_mode(void);
+static int adaptive_keyboard_set_mode(int new_mode);
+
+enum ADAPTIVE_KEY_MODE {
+	HOME_MODE,
+	WEB_BROWSER_MODE,
+	WEB_CONFERENCE_MODE,
+	FUNCTION_MODE,
+	LAYFLAT_MODE
+};
+
+static ssize_t adaptive_kbd_mode_show(struct device *dev,
+			   struct device_attribute *attr,
+			   char *buf)
+{
+	int current_mode;
+
+	current_mode = adaptive_keyboard_get_mode();
+	if (current_mode < 0)
+		return current_mode;
+
+	return snprintf(buf, PAGE_SIZE, "%d\n", current_mode);
+}
+
+static ssize_t adaptive_kbd_mode_store(struct device *dev,
+			    struct device_attribute *attr,
+			    const char *buf, size_t count)
+{
+	unsigned long t;
+	int res;
+
+	if (parse_strtoul(buf, LAYFLAT_MODE, &t))
+		return -EINVAL;
+
+	res = adaptive_keyboard_set_mode(t);
+	return (res < 0) ? res : count;
+}
+
+static DEVICE_ATTR_RW(adaptive_kbd_mode);
+
+static struct attribute *adaptive_kbd_attributes[] = {
+	&dev_attr_adaptive_kbd_mode.attr,
+	NULL
+};
+
+static const struct attribute_group adaptive_kbd_attr_group = {
+	.attrs = adaptive_kbd_attributes,
+};
+
 /* --------------------------------------------------------------------- */
 
 static struct attribute *hotkey_attributes[] __initdata = {
@@ -3118,6 +3173,13 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 		/* (assignments unknown, please report if found) */
 		KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
 		KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+
+		/* No assignments, only used for Adaptive keyboards. */
+		KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+		KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+		KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+		KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
+		KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
 		},
 
 	/* Generic keymap for Lenovo ThinkPads */
@@ -3174,6 +3236,35 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 
 		/* Extra keys in use since the X240 / T440 / T540 */
 		KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE,
+
+		/*
+		 * These are the adaptive keyboard keycodes for Carbon X1 2014.
+		 * The first item in this list is the Mute button which is
+		 * emitted with 0x103 through
+		 * adaptive_keyboard_hotkey_notify_hotkey() when the sound
+		 * symbol is held.
+		 * We'll need to offset those by 0x20.
+		 */
+		KEY_RESERVED,        /* Mute held, 0x103 */
+		KEY_BRIGHTNESS_MIN,  /* Backlight off */
+		KEY_RESERVED,        /* Clipping tool */
+		KEY_RESERVED,        /* Cloud */
+		KEY_RESERVED,
+		KEY_VOICECOMMAND,    /* Voice */
+		KEY_RESERVED,
+		KEY_RESERVED,        /* Gestures */
+		KEY_RESERVED,
+		KEY_RESERVED,
+		KEY_RESERVED,
+		KEY_CONFIG,          /* Settings */
+		KEY_RESERVED,        /* New tab */
+		KEY_REFRESH,         /* Reload */
+		KEY_BACK,            /* Back */
+		KEY_RESERVED,        /* Microphone down */
+		KEY_RESERVED,        /* Microphone up */
+		KEY_RESERVED,        /* Microphone cancellation */
+		KEY_RESERVED,        /* Camera mode */
+		KEY_RESERVED,        /* Rotate display, 0x116 */
 		},
 	};
 
@@ -3227,6 +3318,20 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 	if (!tp_features.hotkey)
 		return 1;
 
+	/*
+	 * Check if we have an adaptive keyboard, like on the
+	 * Lenovo Carbon X1 2014 (2nd Gen).
+	 */
+	if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
+		if ((hkeyv >> 8) == 2) {
+			tp_features.has_adaptive_kbd = true;
+			res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
+					&adaptive_kbd_attr_group);
+			if (res)
+				goto err_exit;
+		}
+	}
+
 	quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
 				     ARRAY_SIZE(tpacpi_hotkey_qtable));
 
@@ -3437,6 +3542,9 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 
 err_exit:
 	delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
+	sysfs_remove_group(&tpacpi_pdev->dev.kobj,
+			&adaptive_kbd_attr_group);
+
 	hotkey_dev_attributes = NULL;
 
 	return (res < 0) ? res : 1;
@@ -3449,14 +3557,6 @@ err_exit:
  * Will consider support rest of modes in future.
  *
  */
-enum ADAPTIVE_KEY_MODE {
-	HOME_MODE,
-	WEB_BROWSER_MODE,
-	WEB_CONFERENCE_MODE,
-	FUNCTION_MODE,
-	LAYFLAT_MODE
-};
-
 static const int adaptive_keyboard_modes[] = {
 	HOME_MODE,
 /*	WEB_BROWSER_MODE = 2,
@@ -3466,6 +3566,8 @@ static const int adaptive_keyboard_modes[] = {
 
 #define DFR_CHANGE_ROW			0x101
 #define DFR_SHOW_QUICKVIEW_ROW		0x102
+#define FIRST_ADAPTIVE_KEY		0x103
+#define ADAPTIVE_KEY_OFFSET		0x020
 
 /* press Fn key a while second, it will switch to Function Mode. Then
  * release Fn key, previous mode be restored.
@@ -3473,6 +3575,32 @@ static const int adaptive_keyboard_modes[] = {
 static bool adaptive_keyboard_mode_is_saved;
 static int adaptive_keyboard_prev_mode;
 
+static int adaptive_keyboard_get_mode(void)
+{
+	int mode = 0;
+
+	if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) {
+		pr_err("Cannot read adaptive keyboard mode\n");
+		return -EIO;
+	}
+
+	return mode;
+}
+
+static int adaptive_keyboard_set_mode(int new_mode)
+{
+	if (new_mode < 0 ||
+		new_mode > LAYFLAT_MODE)
+		return -EINVAL;
+
+	if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
+		pr_err("Cannot set adaptive keyboard mode\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
 static int adaptive_keyboard_get_next_mode(int mode)
 {
 	size_t i;
@@ -3493,8 +3621,9 @@ static int adaptive_keyboard_get_next_mode(int mode)
 
 static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
 {
-	u32 current_mode = 0;
+	int current_mode = 0;
 	int new_mode = 0;
+	int keycode;
 
 	switch (scancode) {
 	case DFR_CHANGE_ROW:
@@ -3502,43 +3631,51 @@ static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
 			new_mode = adaptive_keyboard_prev_mode;
 			adaptive_keyboard_mode_is_saved = false;
 		} else {
-			if (!acpi_evalf(
-					hkey_handle, &current_mode,
-					"GTRW", "dd", 0)) {
-				pr_err("Cannot read adaptive keyboard mode\n");
+			current_mode = adaptive_keyboard_get_mode();
+			if (current_mode < 0)
 				return false;
-			} else {
-				new_mode = adaptive_keyboard_get_next_mode(
-						current_mode);
-			}
+			new_mode = adaptive_keyboard_get_next_mode(
+					current_mode);
 		}
 
-		if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
-			pr_err("Cannot set adaptive keyboard mode\n");
+		if (adaptive_keyboard_set_mode(new_mode) < 0)
 			return false;
-		}
 
 		return true;
 
 	case DFR_SHOW_QUICKVIEW_ROW:
-		if (!acpi_evalf(hkey_handle,
-				&adaptive_keyboard_prev_mode,
-				"GTRW", "dd", 0)) {
-			pr_err("Cannot read adaptive keyboard mode\n");
+		current_mode = adaptive_keyboard_get_mode();
+		if (current_mode < 0)
 			return false;
-		} else {
-			adaptive_keyboard_mode_is_saved = true;
 
-			if (!acpi_evalf(hkey_handle,
-					NULL, "STRW", "vd", FUNCTION_MODE)) {
-				pr_err("Cannot set adaptive keyboard mode\n");
-				return false;
-			}
-		}
+		adaptive_keyboard_prev_mode = current_mode;
+		adaptive_keyboard_mode_is_saved = true;
+
+		if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0)
+			return false;
 		return true;
 
 	default:
-		return false;
+		if (scancode < FIRST_ADAPTIVE_KEY ||
+		    scancode >= FIRST_ADAPTIVE_KEY + TPACPI_HOTKEY_MAP_LEN -
+				ADAPTIVE_KEY_OFFSET) {
+			pr_info("Unhandled adaptive keyboard key: 0x%x\n",
+					scancode);
+			return false;
+		}
+		keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + ADAPTIVE_KEY_OFFSET];
+		if (keycode != KEY_RESERVED) {
+			mutex_lock(&tpacpi_inputdev_send_mutex);
+
+			input_report_key(tpacpi_inputdev, keycode, 1);
+			input_sync(tpacpi_inputdev);
+
+			input_report_key(tpacpi_inputdev, keycode, 0);
+			input_sync(tpacpi_inputdev);
+
+			mutex_unlock(&tpacpi_inputdev_send_mutex);
+		}
+		return true;
 	}
 }
 
@@ -3836,28 +3973,21 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 
 static void hotkey_suspend(void)
 {
-	int hkeyv;
-
 	/* Do these on suspend, we get the events on early resume! */
 	hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
 	hotkey_autosleep_ack = 0;
 
 	/* save previous mode of adaptive keyboard of X1 Carbon */
-	if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
-		if ((hkeyv >> 8) == 2) {
-			if (!acpi_evalf(hkey_handle,
-						&adaptive_keyboard_prev_mode,
-						"GTRW", "dd", 0)) {
-				pr_err("Cannot read adaptive keyboard mode.\n");
-			}
+	if (tp_features.has_adaptive_kbd) {
+		if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode,
+					"GTRW", "dd", 0)) {
+			pr_err("Cannot read adaptive keyboard mode.\n");
 		}
 	}
 }
 
 static void hotkey_resume(void)
 {
-	int hkeyv;
-
 	tpacpi_disable_brightness_delay();
 
 	if (hotkey_status_set(true) < 0 ||
@@ -3872,14 +4002,10 @@ static void hotkey_resume(void)
 	hotkey_poll_setup_safe(false);
 
 	/* restore previous mode of adapive keyboard of X1 Carbon */
-	if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
-		if ((hkeyv >> 8) == 2) {
-			if (!acpi_evalf(hkey_handle,
-						NULL,
-						"STRW", "vd",
-						adaptive_keyboard_prev_mode)) {
-				pr_err("Cannot set adaptive keyboard mode.\n");
-			}
+	if (tp_features.has_adaptive_kbd) {
+		if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd",
+					adaptive_keyboard_prev_mode)) {
+			pr_err("Cannot set adaptive keyboard mode.\n");
 		}
 	}
 }
@@ -4079,9 +4205,7 @@ static ssize_t bluetooth_enable_store(struct device *dev,
 				attr, buf, count);
 }
 
-static struct device_attribute dev_attr_bluetooth_enable =
-	__ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
-		bluetooth_enable_show, bluetooth_enable_store);
+static DEVICE_ATTR_RW(bluetooth_enable);
 
 /* --------------------------------------------------------------------- */
 
@@ -4269,9 +4393,7 @@ static ssize_t wan_enable_store(struct device *dev,
 			attr, buf, count);
 }
 
-static struct device_attribute dev_attr_wan_enable =
-	__ATTR(wwan_enable, S_IWUSR | S_IRUGO,
-		wan_enable_show, wan_enable_store);
+static DEVICE_ATTR_RW(wan_enable);
 
 /* --------------------------------------------------------------------- */
 
@@ -5048,8 +5170,7 @@ static ssize_t cmos_command_store(struct device *dev,
 	return (res) ? res : count;
 }
 
-static struct device_attribute dev_attr_cmos_command =
-	__ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
+static DEVICE_ATTR_WO(cmos_command);
 
 /* --------------------------------------------------------------------- */
 
@@ -8017,9 +8138,7 @@ static ssize_t fan_pwm1_enable_store(struct device *dev,
 	return count;
 }
 
-static struct device_attribute dev_attr_fan_pwm1_enable =
-	__ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
-		fan_pwm1_enable_show, fan_pwm1_enable_store);
+static DEVICE_ATTR_RW(fan_pwm1_enable);
 
 /* sysfs fan pwm1 ------------------------------------------------------ */
 static ssize_t fan_pwm1_show(struct device *dev,
@@ -8079,9 +8198,7 @@ static ssize_t fan_pwm1_store(struct device *dev,
 	return (rc) ? rc : count;
 }
 
-static struct device_attribute dev_attr_fan_pwm1 =
-	__ATTR(pwm1, S_IWUSR | S_IRUGO,
-		fan_pwm1_show, fan_pwm1_store);
+static DEVICE_ATTR_RW(fan_pwm1);
 
 /* sysfs fan fan1_input ------------------------------------------------ */
 static ssize_t fan_fan1_input_show(struct device *dev,
@@ -8098,9 +8215,7 @@ static ssize_t fan_fan1_input_show(struct device *dev,
 	return snprintf(buf, PAGE_SIZE, "%u\n", speed);
 }
 
-static struct device_attribute dev_attr_fan_fan1_input =
-	__ATTR(fan1_input, S_IRUGO,
-		fan_fan1_input_show, NULL);
+static DEVICE_ATTR_RO(fan_fan1_input);
 
 /* sysfs fan fan2_input ------------------------------------------------ */
 static ssize_t fan_fan2_input_show(struct device *dev,
@@ -8117,9 +8232,7 @@ static ssize_t fan_fan2_input_show(struct device *dev,
 	return snprintf(buf, PAGE_SIZE, "%u\n", speed);
 }
 
-static struct device_attribute dev_attr_fan_fan2_input =
-	__ATTR(fan2_input, S_IRUGO,
-		fan_fan2_input_show, NULL);
+static DEVICE_ATTR_RO(fan_fan2_input);
 
 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
@@ -8735,8 +8848,7 @@ static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
 	return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
 }
 
-static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
-	__ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
+static DEVICE_ATTR_RO(thinkpad_acpi_pdev_name);
 
 /* --------------------------------------------------------------------- */
 
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index dbcb7a8915b8..9956b9902bb4 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -51,6 +51,7 @@
 #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");
@@ -116,6 +117,7 @@ MODULE_LICENSE("GPL");
 #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
@@ -129,10 +131,13 @@ MODULE_LICENSE("GPL");
 #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
@@ -147,9 +152,10 @@ MODULE_LICENSE("GPL");
 #define SCI_KBD_MODE_OFF		0x10
 #define SCI_KBD_TIME_MAX		0x3c001a
 #define SCI_USB_CHARGE_MODE_MASK	0xff
-#define SCI_USB_CHARGE_DISABLED		0x30000
-#define SCI_USB_CHARGE_ALTERNATE	0x30009
-#define SCI_USB_CHARGE_AUTO		0x30021
+#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
@@ -174,6 +180,8 @@ struct toshiba_acpi_dev {
 	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;
@@ -243,29 +251,6 @@ static const struct key_entry toshiba_acpi_keymap[] = {
 	{ KE_END, 0 },
 };
 
-/* alternative keymap */
-static const struct dmi_system_id toshiba_alt_keymap_dmi[] = {
-	{
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "Satellite M840"),
-		},
-	},
-	{
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "Qosmio X75-A"),
-		},
-	},
-	{
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A50-A"),
-		},
-	},
-	{}
-};
-
 static const struct key_entry toshiba_acpi_alt_keymap[] = {
 	{ KE_KEY, 0x157, { KEY_MUTE } },
 	{ KE_KEY, 0x102, { KEY_ZOOMOUT } },
@@ -281,6 +266,14 @@ static const struct key_entry toshiba_acpi_alt_keymap[] = {
 };
 
 /*
+ * 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
  */
 
@@ -819,6 +812,54 @@ static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev,
 }
 
 /* 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)
 {
@@ -934,11 +975,11 @@ static int toshiba_usb_rapid_charge_get(struct toshiba_acpi_dev *dev,
 	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");
+		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 Sleep and Charge not supported\n");
+		pr_info("USB Rapid Charge not supported\n");
 		return -ENODEV;
 	}
 
@@ -962,10 +1003,10 @@ static int toshiba_usb_rapid_charge_set(struct toshiba_acpi_dev *dev,
 	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");
+		pr_err("ACPI call to set USB Rapid Charge failed\n");
 		return -EIO;
 	} else if (out[0] == TOS_NOT_SUPPORTED) {
-		pr_info("USB Sleep and Charge not supported\n");
+		pr_info("USB Rapid Charge not supported\n");
 		return -ENODEV;
 	} else if (out[0] == TOS_INPUT_DATA_ERROR) {
 		return -EIO;
@@ -984,10 +1025,10 @@ static int toshiba_usb_sleep_music_get(struct toshiba_acpi_dev *dev, u32 *state)
 	result = sci_read(dev, SCI_USB_SLEEP_MUSIC, state);
 	sci_close(dev);
 	if (result == TOS_FAILURE) {
-		pr_err("ACPI call to set USB S&C mode failed\n");
+		pr_err("ACPI call to get Sleep and Music failed\n");
 		return -EIO;
 	} else if (result == TOS_NOT_SUPPORTED) {
-		pr_info("USB Sleep and Charge not supported\n");
+		pr_info("Sleep and Music not supported\n");
 		return -ENODEV;
 	} else if (result == TOS_INPUT_DATA_ERROR) {
 		return -EIO;
@@ -1006,10 +1047,10 @@ static int toshiba_usb_sleep_music_set(struct toshiba_acpi_dev *dev, u32 state)
 	result = sci_write(dev, SCI_USB_SLEEP_MUSIC, state);
 	sci_close(dev);
 	if (result == TOS_FAILURE) {
-		pr_err("ACPI call to set USB S&C mode failed\n");
+		pr_err("ACPI call to set Sleep and Music failed\n");
 		return -EIO;
 	} else if (result == TOS_NOT_SUPPORTED) {
-		pr_info("USB Sleep and Charge not supported\n");
+		pr_info("Sleep and Music not supported\n");
 		return -ENODEV;
 	} else if (result == TOS_INPUT_DATA_ERROR) {
 		return -EIO;
@@ -1149,6 +1190,28 @@ static int toshiba_usb_three_set(struct toshiba_acpi_dev *dev, u32 state)
 	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)
@@ -1973,17 +2036,21 @@ static ssize_t usb_sleep_charge_store(struct device *dev,
 	 * 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)
+	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;
+		mode |= SCI_USB_CHARGE_DISABLED;
 	else if (state == 1)
-		mode = SCI_USB_CHARGE_ALTERNATE;
+		mode |= SCI_USB_CHARGE_ALTERNATE;
 	else if (state == 2)
-		mode = SCI_USB_CHARGE_AUTO;
+		mode |= SCI_USB_CHARGE_AUTO;
+	else if (state == 3)
+		mode |= SCI_USB_CHARGE_TYPICAL;
 
 	ret = toshiba_usb_sleep_charge_set(toshiba, mode);
 	if (ret)
@@ -2333,6 +2400,20 @@ static int toshiba_acpi_enable_hotkeys(struct toshiba_acpi_dev *dev)
 	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)
 {
@@ -2434,10 +2515,22 @@ static void toshiba_acpi_process_hotkeys(struct toshiba_acpi_dev *dev)
 
 static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
 {
+	const struct key_entry *keymap = toshiba_acpi_keymap;
 	acpi_handle ec_handle;
-	int error;
+	u32 events_type;
 	u32 hci_result;
-	const struct key_entry *keymap = toshiba_acpi_keymap;
+	int error;
+
+	error = toshiba_acpi_enable_hotkeys(dev);
+	if (error)
+		return error;
+
+	error = toshiba_hotkey_event_type_get(dev, &events_type);
+	if (error) {
+		pr_err("Unable to query Hotkey Event Type\n");
+		return error;
+	}
+	dev->hotkey_event_type = events_type;
 
 	dev->hotkey_dev = input_allocate_device();
 	if (!dev->hotkey_dev)
@@ -2447,8 +2540,14 @@ static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
 	dev->hotkey_dev->phys = "toshiba_acpi/input0";
 	dev->hotkey_dev->id.bustype = BUS_HOST;
 
-	if (dmi_check_system(toshiba_alt_keymap_dmi))
+	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;
@@ -2490,12 +2589,6 @@ static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
 		goto err_remove_filter;
 	}
 
-	error = toshiba_acpi_enable_hotkeys(dev);
-	if (error) {
-		pr_info("Unable to enable hotkeys\n");
-		goto err_remove_filter;
-	}
-
 	error = input_register_device(dev->hotkey_dev);
 	if (error) {
 		pr_info("Unable to register input device\n");
@@ -2541,6 +2634,20 @@ static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
 	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;
@@ -2624,6 +2731,7 @@ 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;
@@ -2648,6 +2756,16 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
 	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;
+
 	if (toshiba_acpi_setup_keyboard(dev))
 		pr_info("Unable to activate hotkeys\n");
 
@@ -2716,8 +2834,7 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
 	ret = toshiba_accelerometer_supported(dev);
 	dev->accelerometer_supported = !ret;
 
-	ret = toshiba_usb_sleep_charge_get(dev, &dummy);
-	dev->usb_sleep_charge_supported = !ret;
+	toshiba_usb_sleep_charge_available(dev);
 
 	ret = toshiba_usb_rapid_charge_get(dev, &dummy);
 	dev->usb_rapid_charge_supported = !ret;
@@ -2725,23 +2842,25 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
 	ret = toshiba_usb_sleep_music_get(dev, &dummy);
 	dev->usb_sleep_music_supported = !ret;
 
-	ret = toshiba_function_keys_get(dev, &dummy);
-	dev->kbd_function_keys_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;
 
-	/* Determine whether or not BIOS supports fan and video interfaces */
-
 	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) {
@@ -2770,6 +2889,21 @@ static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 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,
@@ -2777,17 +2911,19 @@ static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
 		if (ret)
 			pr_err("Unable to update sysfs entries\n");
 		break;
-	case 0x81: /* Unknown */
-	case 0x82: /* Unknown */
-	case 0x83: /* Unknown */
-	case 0x8c: /* Unknown */
+	case 0x85: /* Unknown */
+	case 0x8d: /* Unknown */
 	case 0x8e: /* Unknown */
-	case 0x8f: /* Unknown */
-	case 0x90: /* 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
diff --git a/drivers/platform/x86/toshiba_bluetooth.c b/drivers/platform/x86/toshiba_bluetooth.c
index 2cb1ea62b4a7..249800763362 100644
--- a/drivers/platform/x86/toshiba_bluetooth.c
+++ b/drivers/platform/x86/toshiba_bluetooth.c
@@ -2,6 +2,7 @@
  * Toshiba Bluetooth Enable Driver
  *
  * Copyright (C) 2009 Jes Sorensen <Jes.Sorensen@gmail.com>
+ * Copyright (C) 2015 Azael Avalos <coproscefalo@gmail.com>
  *
  * Thanks to Matthew Garrett for background info on ACPI innards which
  * normal people aren't meant to understand :-)
@@ -25,6 +26,10 @@
 #include <linux/types.h>
 #include <linux/acpi.h>
 
+#define BT_KILLSWITCH_MASK	0x01
+#define BT_PLUGGED_MASK		0x40
+#define BT_POWER_MASK		0x80
+
 MODULE_AUTHOR("Jes Sorensen <Jes.Sorensen@gmail.com>");
 MODULE_DESCRIPTION("Toshiba Laptop ACPI Bluetooth Enable Driver");
 MODULE_LICENSE("GPL");
@@ -57,32 +62,107 @@ static struct acpi_driver toshiba_bt_rfkill_driver = {
 	.drv.pm =	&toshiba_bt_pm,
 };
 
+static int toshiba_bluetooth_present(acpi_handle handle)
+{
+	acpi_status result;
+	u64 bt_present;
+
+	/*
+	 * Some Toshiba laptops may have a fake TOS6205 device in
+	 * their ACPI BIOS, so query the _STA method to see if there
+	 * is really anything there.
+	 */
+	result = acpi_evaluate_integer(handle, "_STA", NULL, &bt_present);
+	if (ACPI_FAILURE(result)) {
+		pr_err("ACPI call to query Bluetooth presence failed");
+		return -ENXIO;
+	} else if (!bt_present) {
+		pr_info("Bluetooth device not present\n");
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int toshiba_bluetooth_status(acpi_handle handle)
+{
+	acpi_status result;
+	u64 status;
+
+	result = acpi_evaluate_integer(handle, "BTST", NULL, &status);
+	if (ACPI_FAILURE(result)) {
+		pr_err("Could not get Bluetooth device status\n");
+		return -ENXIO;
+	}
+
+	pr_info("Bluetooth status %llu\n", status);
+
+	return status;
+}
 
 static int toshiba_bluetooth_enable(acpi_handle handle)
 {
-	acpi_status res1, res2;
-	u64 result;
+	acpi_status result;
+	bool killswitch;
+	bool powered;
+	bool plugged;
+	int status;
 
 	/*
 	 * Query ACPI to verify RFKill switch is set to 'on'.
 	 * If not, we return silently, no need to report it as
 	 * an error.
 	 */
-	res1 = acpi_evaluate_integer(handle, "BTST", NULL, &result);
-	if (ACPI_FAILURE(res1))
-		return res1;
-	if (!(result & 0x01))
-		return 0;
+	status = toshiba_bluetooth_status(handle);
+	if (status < 0)
+		return status;
+
+	killswitch = (status & BT_KILLSWITCH_MASK) ? true : false;
+	powered = (status & BT_POWER_MASK) ? true : false;
+	plugged = (status & BT_PLUGGED_MASK) ? true : false;
 
-	pr_info("Re-enabling Toshiba Bluetooth\n");
-	res1 = acpi_evaluate_object(handle, "AUSB", NULL, NULL);
-	res2 = acpi_evaluate_object(handle, "BTPO", NULL, NULL);
-	if (!ACPI_FAILURE(res1) || !ACPI_FAILURE(res2))
+	if (!killswitch)
 		return 0;
+	/*
+	 * This check ensures to only enable the device if it is powered
+	 * off or detached, as some recent devices somehow pass the killswitch
+	 * test, causing a loop enabling/disabling the device, see bug 93911.
+	 */
+	if (powered || plugged)
+		return 0;
+
+	result = acpi_evaluate_object(handle, "AUSB", NULL, NULL);
+	if (ACPI_FAILURE(result)) {
+		pr_err("Could not attach USB Bluetooth device\n");
+		return -ENXIO;
+	}
+
+	result = acpi_evaluate_object(handle, "BTPO", NULL, NULL);
+	if (ACPI_FAILURE(result)) {
+		pr_err("Could not power ON Bluetooth device\n");
+		return -ENXIO;
+	}
+
+	return 0;
+}
+
+static int toshiba_bluetooth_disable(acpi_handle handle)
+{
+	acpi_status result;
+
+	result = acpi_evaluate_object(handle, "BTPF", NULL, NULL);
+	if (ACPI_FAILURE(result)) {
+		pr_err("Could not power OFF Bluetooth device\n");
+		return -ENXIO;
+	}
 
-	pr_warn("Failed to re-enable Toshiba Bluetooth\n");
+	result = acpi_evaluate_object(handle, "DUSB", NULL, NULL);
+	if (ACPI_FAILURE(result)) {
+		pr_err("Could not detach USB Bluetooth device\n");
+		return -ENXIO;
+	}
 
-	return -ENODEV;
+	return 0;
 }
 
 static void toshiba_bt_rfkill_notify(struct acpi_device *device, u32 event)
@@ -99,23 +179,18 @@ static int toshiba_bt_resume(struct device *dev)
 
 static int toshiba_bt_rfkill_add(struct acpi_device *device)
 {
-	acpi_status status;
-	u64 bt_present;
-	int result = -ENODEV;
+	int result;
 
-	/*
-	 * Some Toshiba laptops may have a fake TOS6205 device in
-	 * their ACPI BIOS, so query the _STA method to see if there
-	 * is really anything there, before trying to enable it.
-	 */
-	status = acpi_evaluate_integer(device->handle, "_STA", NULL,
-				       &bt_present);
+	result = toshiba_bluetooth_present(device->handle);
+	if (result)
+		return result;
 
-	if (!ACPI_FAILURE(status) && bt_present) {
-		pr_info("Detected Toshiba ACPI Bluetooth device - "
-			"installing RFKill handler\n");
-		result = toshiba_bluetooth_enable(device->handle);
-	}
+	pr_info("Toshiba ACPI Bluetooth device driver\n");
+
+	/* Enable the BT device */
+	result = toshiba_bluetooth_enable(device->handle);
+	if (result)
+		return result;
 
 	return result;
 }
@@ -123,7 +198,7 @@ static int toshiba_bt_rfkill_add(struct acpi_device *device)
 static int toshiba_bt_rfkill_remove(struct acpi_device *device)
 {
 	/* clean up */
-	return 0;
+	return toshiba_bluetooth_disable(device->handle);
 }
 
 module_acpi_driver(toshiba_bt_rfkill_driver);
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 737e56d46f61..aac47573f9ed 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -45,7 +45,6 @@ MODULE_LICENSE("GPL");
 
 #define ACPI_WMI_CLASS "wmi"
 
-static DEFINE_MUTEX(wmi_data_lock);
 static LIST_HEAD(wmi_block_list);
 
 struct guid_block {
@@ -240,10 +239,10 @@ static bool find_guid(const char *guid_string, struct wmi_block **out)
 		if (memcmp(block->guid, guid_input, 16) == 0) {
 			if (out)
 				*out = wblock;
-			return 1;
+			return true;
 		}
 	}
-	return 0;
+	return false;
 }
 
 static acpi_status wmi_method_enable(struct wmi_block *wblock, int enable)