Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86

* 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86: (45 commits)
  acer-wmi: replaced the hard coded bitmap by the communication devices bitmap from SMBIOS
  acer-wmi: check the existence of internal wireless device when set capability
  acer-wmi: add ACER_WMID_v2 interface flag to represent new notebooks
  sony-laptop:irq: Remove IRQF_DISABLED
  asus-laptop: Add rfkill support for Pegatron Lucid tablet
  asus-laptop: pega_accel - Report accelerometer orientation change through udev
  asus-laptop: fix module description
  asus-laptop: hide leds on Pegatron Lucid
  asus-laptop: Pegatron Lucid accelerometer
  asus-laptop: allow boot time control of Pegatron ALS sensor
  Platform: samsung_laptop: add support for X520 machines.
  platform: samsung_laptop: add dmi information for Samsung R700 laptops
  hp_accel: Add axis-mapping for HP ProBook / EliteBook
  hp_accel: Add a new PNP id
  WMI: properly cleanup devices to avoid crashes
  ideapad: remove sysfs node for cfg
  ideapad: add debugfs support
  ideapad: add event for Novo key
  ideapad: change parameter of ideapad_sync_rfk_state
  ideapad: define vpc commands
  ...

14 files changed, 1395 insertions, 599 deletions

diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 10cf2500522..f4e3d82379d 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -61,15 +61,18 @@ config ASUS_LAPTOP
 	depends on INPUT
 	depends on RFKILL || RFKILL = n
 	select INPUT_SPARSEKMAP
+	select INPUT_POLLDEV
 	---help---
-	  This is the new Linux driver for Asus laptops. It may also support some
-	  MEDION, JVC or VICTOR laptops. It makes all the extra buttons generate
-	  standard ACPI events and input events. It also adds
-	  support for video output switching, LCD backlight control, Bluetooth and
-	  Wlan control, and most importantly, allows you to blink those fancy LEDs.
+	  This is a driver for Asus laptops, Lenovo SL and the Pegatron
+	  Lucid tablet. It may also support some MEDION, JVC or VICTOR
+	  laptops. It makes all the extra buttons generate standard
+	  ACPI events and input events, and on the Lucid the built-in
+	  accelerometer appears as an input device.  It also adds
+	  support for video output switching, LCD backlight control,
+	  Bluetooth and Wlan control, and most importantly, allows you
+	  to blink those fancy LEDs.
 
-	  For more information and a userspace daemon for handling the extra
-	  buttons see <http://acpi4asus.sf.net>.
+	  For more information see <http://acpi4asus.sf.net>.
 
 	  If you have an ACPI-compatible ASUS laptop, say Y or M here.
 
diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index af2bb20cb2f..b848277171a 100644
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -190,6 +190,7 @@ enum interface_flags {
 	ACER_AMW0,
 	ACER_AMW0_V2,
 	ACER_WMID,
+	ACER_WMID_v2,
 };
 
 #define ACER_DEFAULT_WIRELESS  0
@@ -205,6 +206,7 @@ static int threeg = -1;
 static int force_series;
 static bool ec_raw_mode;
 static bool has_type_aa;
+static u16 commun_func_bitmap;
 
 module_param(mailled, int, 0444);
 module_param(brightness, int, 0444);
@@ -464,6 +466,15 @@ static struct dmi_system_id acer_quirks[] = {
 		},
 		.driver_data = &quirk_lenovo_ideapad_s205,
 	},
+	{
+		.callback = dmi_matched,
+		.ident = "Lenovo 3000 N200",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
+		},
+		.driver_data = &quirk_fujitsu_amilo_li_1718,
+	},
 	{}
 };
 
@@ -868,6 +879,174 @@ static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
 	return WMI_execute_u32(method_id, (u32)value, NULL);
 }
 
+static acpi_status wmid3_get_device_status(u32 *value, u16 device)
+{
+	struct wmid3_gds_return_value return_value;
+	acpi_status status;
+	union acpi_object *obj;
+	struct wmid3_gds_input_param params = {
+		.function_num = 0x1,
+		.hotkey_number = 0x01,
+		.devices = device,
+	};
+	struct acpi_buffer input = {
+		sizeof(struct wmid3_gds_input_param),
+		&params
+	};
+	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+
+	status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
+	if (ACPI_FAILURE(status))
+		return status;
+
+	obj = output.pointer;
+
+	if (!obj)
+		return AE_ERROR;
+	else if (obj->type != ACPI_TYPE_BUFFER) {
+		kfree(obj);
+		return AE_ERROR;
+	}
+	if (obj->buffer.length != 8) {
+		pr_warn("Unknown buffer length %d\n", obj->buffer.length);
+		kfree(obj);
+		return AE_ERROR;
+	}
+
+	return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
+	kfree(obj);
+
+	if (return_value.error_code || return_value.ec_return_value)
+		pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
+			device,
+			return_value.error_code,
+			return_value.ec_return_value);
+	else
+		*value = !!(return_value.devices & device);
+
+	return status;
+}
+
+static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
+{
+	u16 device;
+
+	switch (cap) {
+	case ACER_CAP_WIRELESS:
+		device = ACER_WMID3_GDS_WIRELESS;
+		break;
+	case ACER_CAP_BLUETOOTH:
+		device = ACER_WMID3_GDS_BLUETOOTH;
+		break;
+	case ACER_CAP_THREEG:
+		device = ACER_WMID3_GDS_THREEG;
+		break;
+	default:
+		return AE_ERROR;
+	}
+	return wmid3_get_device_status(value, device);
+}
+
+static acpi_status wmid3_set_device_status(u32 value, u16 device)
+{
+	struct wmid3_gds_return_value return_value;
+	acpi_status status;
+	union acpi_object *obj;
+	u16 devices;
+	struct wmid3_gds_input_param params = {
+		.function_num = 0x1,
+		.hotkey_number = 0x01,
+		.devices = commun_func_bitmap,
+	};
+	struct acpi_buffer input = {
+		sizeof(struct wmid3_gds_input_param),
+		&params
+	};
+	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+	struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
+
+	status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
+	if (ACPI_FAILURE(status))
+		return status;
+
+	obj = output.pointer;
+
+	if (!obj)
+		return AE_ERROR;
+	else if (obj->type != ACPI_TYPE_BUFFER) {
+		kfree(obj);
+		return AE_ERROR;
+	}
+	if (obj->buffer.length != 8) {
+		pr_warning("Unknown buffer length %d\n", obj->buffer.length);
+		kfree(obj);
+		return AE_ERROR;
+	}
+
+	return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
+	kfree(obj);
+
+	if (return_value.error_code || return_value.ec_return_value) {
+		pr_warning("Get Current Device Status failed: "
+			"0x%x - 0x%x\n", return_value.error_code,
+			return_value.ec_return_value);
+		return status;
+	}
+
+	devices = return_value.devices;
+	params.function_num = 0x2;
+	params.hotkey_number = 0x01;
+	params.devices = (value) ? (devices | device) : (devices & ~device);
+
+	status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
+	if (ACPI_FAILURE(status))
+		return status;
+
+	obj = output2.pointer;
+
+	if (!obj)
+		return AE_ERROR;
+	else if (obj->type != ACPI_TYPE_BUFFER) {
+		kfree(obj);
+		return AE_ERROR;
+	}
+	if (obj->buffer.length != 4) {
+		pr_warning("Unknown buffer length %d\n", obj->buffer.length);
+		kfree(obj);
+		return AE_ERROR;
+	}
+
+	return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
+	kfree(obj);
+
+	if (return_value.error_code || return_value.ec_return_value)
+		pr_warning("Set Device Status failed: "
+			"0x%x - 0x%x\n", return_value.error_code,
+			return_value.ec_return_value);
+
+	return status;
+}
+
+static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
+{
+	u16 device;
+
+	switch (cap) {
+	case ACER_CAP_WIRELESS:
+		device = ACER_WMID3_GDS_WIRELESS;
+		break;
+	case ACER_CAP_BLUETOOTH:
+		device = ACER_WMID3_GDS_BLUETOOTH;
+		break;
+	case ACER_CAP_THREEG:
+		device = ACER_WMID3_GDS_THREEG;
+		break;
+	default:
+		return AE_ERROR;
+	}
+	return wmid3_set_device_status(value, device);
+}
+
 static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
 {
 	struct hotkey_function_type_aa *type_aa;
@@ -881,6 +1060,7 @@ static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
 
 	pr_info("Function bitmap for Communication Button: 0x%x\n",
 		type_aa->commun_func_bitmap);
+	commun_func_bitmap = type_aa->commun_func_bitmap;
 
 	if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
 		interface->capability |= ACER_CAP_WIRELESS;
@@ -913,17 +1093,13 @@ static acpi_status WMID_set_capabilities(void)
 		return AE_ERROR;
 	}
 
-	dmi_walk(type_aa_dmi_decode, NULL);
-	if (!has_type_aa) {
+	pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
+	if (devices & 0x07)
 		interface->capability |= ACER_CAP_WIRELESS;
-		if (devices & 0x40)
-			interface->capability |= ACER_CAP_THREEG;
-		if (devices & 0x10)
-			interface->capability |= ACER_CAP_BLUETOOTH;
-	}
-
-	/* WMID always provides brightness methods */
-	interface->capability |= ACER_CAP_BRIGHTNESS;
+	if (devices & 0x40)
+		interface->capability |= ACER_CAP_THREEG;
+	if (devices & 0x10)
+		interface->capability |= ACER_CAP_BLUETOOTH;
 
 	if (!(devices & 0x20))
 		max_brightness = 0x9;
@@ -936,6 +1112,10 @@ static struct wmi_interface wmid_interface = {
 	.type = ACER_WMID,
 };
 
+static struct wmi_interface wmid_v2_interface = {
+	.type = ACER_WMID_v2,
+};
+
 /*
  * Generic Device (interface-independent)
  */
@@ -956,6 +1136,14 @@ static acpi_status get_u32(u32 *value, u32 cap)
 	case ACER_WMID:
 		status = WMID_get_u32(value, cap, interface);
 		break;
+	case ACER_WMID_v2:
+		if (cap & (ACER_CAP_WIRELESS |
+			   ACER_CAP_BLUETOOTH |
+			   ACER_CAP_THREEG))
+			status = wmid_v2_get_u32(value, cap);
+		else if (wmi_has_guid(WMID_GUID2))
+			status = WMID_get_u32(value, cap, interface);
+		break;
 	}
 
 	return status;
@@ -989,6 +1177,13 @@ static acpi_status set_u32(u32 value, u32 cap)
 			}
 		case ACER_WMID:
 			return WMID_set_u32(value, cap, interface);
+		case ACER_WMID_v2:
+			if (cap & (ACER_CAP_WIRELESS |
+				   ACER_CAP_BLUETOOTH |
+				   ACER_CAP_THREEG))
+				return wmid_v2_set_u32(value, cap);
+			else if (wmi_has_guid(WMID_GUID2))
+				return WMID_set_u32(value, cap, interface);
 		default:
 			return AE_BAD_PARAMETER;
 		}
@@ -1095,186 +1290,6 @@ static void acer_backlight_exit(void)
 	backlight_device_unregister(acer_backlight_device);
 }
 
-static acpi_status wmid3_get_device_status(u32 *value, u16 device)
-{
-	struct wmid3_gds_return_value return_value;
-	acpi_status status;
-	union acpi_object *obj;
-	struct wmid3_gds_input_param params = {
-		.function_num = 0x1,
-		.hotkey_number = 0x01,
-		.devices = device,
-	};
-	struct acpi_buffer input = {
-		sizeof(struct wmid3_gds_input_param),
-		&params
-	};
-	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
-
-	status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
-	if (ACPI_FAILURE(status))
-		return status;
-
-	obj = output.pointer;
-
-	if (!obj)
-		return AE_ERROR;
-	else if (obj->type != ACPI_TYPE_BUFFER) {
-		kfree(obj);
-		return AE_ERROR;
-	}
-	if (obj->buffer.length != 8) {
-		pr_warn("Unknown buffer length %d\n", obj->buffer.length);
-		kfree(obj);
-		return AE_ERROR;
-	}
-
-	return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
-	kfree(obj);
-
-	if (return_value.error_code || return_value.ec_return_value)
-		pr_warn("Get Device Status failed: 0x%x - 0x%x\n",
-			return_value.error_code,
-			return_value.ec_return_value);
-	else
-		*value = !!(return_value.devices & device);
-
-	return status;
-}
-
-static acpi_status get_device_status(u32 *value, u32 cap)
-{
-	if (wmi_has_guid(WMID_GUID3)) {
-		u16 device;
-
-		switch (cap) {
-		case ACER_CAP_WIRELESS:
-			device = ACER_WMID3_GDS_WIRELESS;
-			break;
-		case ACER_CAP_BLUETOOTH:
-			device = ACER_WMID3_GDS_BLUETOOTH;
-			break;
-		case ACER_CAP_THREEG:
-			device = ACER_WMID3_GDS_THREEG;
-			break;
-		default:
-			return AE_ERROR;
-		}
-		return wmid3_get_device_status(value, device);
-
-	} else {
-		return get_u32(value, cap);
-	}
-}
-
-static acpi_status wmid3_set_device_status(u32 value, u16 device)
-{
-	struct wmid3_gds_return_value return_value;
-	acpi_status status;
-	union acpi_object *obj;
-	u16 devices;
-	struct wmid3_gds_input_param params = {
-		.function_num = 0x1,
-		.hotkey_number = 0x01,
-		.devices = ACER_WMID3_GDS_WIRELESS |
-				ACER_WMID3_GDS_THREEG |
-				ACER_WMID3_GDS_WIMAX |
-				ACER_WMID3_GDS_BLUETOOTH,
-	};
-	struct acpi_buffer input = {
-		sizeof(struct wmid3_gds_input_param),
-		&params
-	};
-	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
-	struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
-
-	status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
-	if (ACPI_FAILURE(status))
-		return status;
-
-	obj = output.pointer;
-
-	if (!obj)
-		return AE_ERROR;
-	else if (obj->type != ACPI_TYPE_BUFFER) {
-		kfree(obj);
-		return AE_ERROR;
-	}
-	if (obj->buffer.length != 8) {
-		pr_warning("Unknown buffer length %d\n", obj->buffer.length);
-		kfree(obj);
-		return AE_ERROR;
-	}
-
-	return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
-	kfree(obj);
-
-	if (return_value.error_code || return_value.ec_return_value) {
-		pr_warning("Get Current Device Status failed: "
-			"0x%x - 0x%x\n", return_value.error_code,
-			return_value.ec_return_value);
-		return status;
-	}
-
-	devices = return_value.devices;
-	params.function_num = 0x2;
-	params.hotkey_number = 0x01;
-	params.devices = (value) ? (devices | device) : (devices & ~device);
-
-	status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
-	if (ACPI_FAILURE(status))
-		return status;
-
-	obj = output2.pointer;
-
-	if (!obj)
-		return AE_ERROR;
-	else if (obj->type != ACPI_TYPE_BUFFER) {
-		kfree(obj);
-		return AE_ERROR;
-	}
-	if (obj->buffer.length != 4) {
-		pr_warning("Unknown buffer length %d\n", obj->buffer.length);
-		kfree(obj);
-		return AE_ERROR;
-	}
-
-	return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
-	kfree(obj);
-
-	if (return_value.error_code || return_value.ec_return_value)
-		pr_warning("Set Device Status failed: "
-			"0x%x - 0x%x\n", return_value.error_code,
-			return_value.ec_return_value);
-
-	return status;
-}
-
-static acpi_status set_device_status(u32 value, u32 cap)
-{
-	if (wmi_has_guid(WMID_GUID3)) {
-		u16 device;
-
-		switch (cap) {
-		case ACER_CAP_WIRELESS:
-			device = ACER_WMID3_GDS_WIRELESS;
-			break;
-		case ACER_CAP_BLUETOOTH:
-			device = ACER_WMID3_GDS_BLUETOOTH;
-			break;
-		case ACER_CAP_THREEG:
-			device = ACER_WMID3_GDS_THREEG;
-			break;
-		default:
-			return AE_ERROR;
-		}
-		return wmid3_set_device_status(value, device);
-
-	} else {
-		return set_u32(value, cap);
-	}
-}
-
 /*
  * Rfkill devices
  */
@@ -1285,12 +1300,13 @@ static void acer_rfkill_update(struct work_struct *ignored)
 	u32 state;
 	acpi_status status;
 
-	status = get_u32(&state, ACER_CAP_WIRELESS);
-	if (ACPI_SUCCESS(status)) {
-		if (quirks->wireless == 3) {
-			rfkill_set_hw_state(wireless_rfkill, !state);
-		} else {
-			rfkill_set_sw_state(wireless_rfkill, !state);
+	if (has_cap(ACER_CAP_WIRELESS)) {
+		status = get_u32(&state, ACER_CAP_WIRELESS);
+		if (ACPI_SUCCESS(status)) {
+			if (quirks->wireless == 3)
+				rfkill_set_hw_state(wireless_rfkill, !state);
+			else
+				rfkill_set_sw_state(wireless_rfkill, !state);
 		}
 	}
 
@@ -1301,8 +1317,7 @@ static void acer_rfkill_update(struct work_struct *ignored)
 	}
 
 	if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
-		status = wmid3_get_device_status(&state,
-				ACER_WMID3_GDS_THREEG);
+		status = get_u32(&state, ACER_WMID3_GDS_THREEG);
 		if (ACPI_SUCCESS(status))
 			rfkill_set_sw_state(threeg_rfkill, !state);
 	}
@@ -1316,7 +1331,7 @@ static int acer_rfkill_set(void *data, bool blocked)
 	u32 cap = (unsigned long)data;
 
 	if (rfkill_inited) {
-		status = set_device_status(!blocked, cap);
+		status = set_u32(!blocked, cap);
 		if (ACPI_FAILURE(status))
 			return -ENODEV;
 	}
@@ -1343,7 +1358,7 @@ static struct rfkill *acer_rfkill_register(struct device *dev,
 	if (!rfkill_dev)
 		return ERR_PTR(-ENOMEM);
 
-	status = get_device_status(&state, cap);
+	status = get_u32(&state, cap);
 
 	err = rfkill_register(rfkill_dev);
 	if (err) {
@@ -1359,19 +1374,24 @@ static struct rfkill *acer_rfkill_register(struct device *dev,
 
 static int acer_rfkill_init(struct device *dev)
 {
-	wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
-		"acer-wireless", ACER_CAP_WIRELESS);
-	if (IS_ERR(wireless_rfkill))
-		return PTR_ERR(wireless_rfkill);
+	int err;
+
+	if (has_cap(ACER_CAP_WIRELESS)) {
+		wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
+			"acer-wireless", ACER_CAP_WIRELESS);
+		if (IS_ERR(wireless_rfkill)) {
+			err = PTR_ERR(wireless_rfkill);
+			goto error_wireless;
+		}
+	}
 
 	if (has_cap(ACER_CAP_BLUETOOTH)) {
 		bluetooth_rfkill = acer_rfkill_register(dev,
 			RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
 			ACER_CAP_BLUETOOTH);
 		if (IS_ERR(bluetooth_rfkill)) {
-			rfkill_unregister(wireless_rfkill);
-			rfkill_destroy(wireless_rfkill);
-			return PTR_ERR(bluetooth_rfkill);
+			err = PTR_ERR(bluetooth_rfkill);
+			goto error_bluetooth;
 		}
 	}
 
@@ -1380,30 +1400,44 @@ static int acer_rfkill_init(struct device *dev)
 			RFKILL_TYPE_WWAN, "acer-threeg",
 			ACER_CAP_THREEG);
 		if (IS_ERR(threeg_rfkill)) {
-			rfkill_unregister(wireless_rfkill);
-			rfkill_destroy(wireless_rfkill);
-			rfkill_unregister(bluetooth_rfkill);
-			rfkill_destroy(bluetooth_rfkill);
-			return PTR_ERR(threeg_rfkill);
+			err = PTR_ERR(threeg_rfkill);
+			goto error_threeg;
 		}
 	}
 
 	rfkill_inited = true;
 
-	if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
+	if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
+	    has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
 		schedule_delayed_work(&acer_rfkill_work,
 			round_jiffies_relative(HZ));
 
 	return 0;
+
+error_threeg:
+	if (has_cap(ACER_CAP_BLUETOOTH)) {
+		rfkill_unregister(bluetooth_rfkill);
+		rfkill_destroy(bluetooth_rfkill);
+	}
+error_bluetooth:
+	if (has_cap(ACER_CAP_WIRELESS)) {
+		rfkill_unregister(wireless_rfkill);
+		rfkill_destroy(wireless_rfkill);
+	}
+error_wireless:
+	return err;
 }
 
 static void acer_rfkill_exit(void)
 {
-	if (ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID))
+	if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
+	    has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
 		cancel_delayed_work_sync(&acer_rfkill_work);
 
-	rfkill_unregister(wireless_rfkill);
-	rfkill_destroy(wireless_rfkill);
+	if (has_cap(ACER_CAP_WIRELESS)) {
+		rfkill_unregister(wireless_rfkill);
+		rfkill_destroy(wireless_rfkill);
+	}
 
 	if (has_cap(ACER_CAP_BLUETOOTH)) {
 		rfkill_unregister(bluetooth_rfkill);
@@ -1428,11 +1462,7 @@ static ssize_t show_bool_threeg(struct device *dev,
 
 	pr_info("This threeg sysfs will be removed in 2012"
 		" - used by: %s\n", current->comm);
-	if (wmi_has_guid(WMID_GUID3))
-		status = wmid3_get_device_status(&result,
-				ACER_WMID3_GDS_THREEG);
-	else
-		status = get_u32(&result, ACER_CAP_THREEG);
+	status = get_u32(&result, ACER_CAP_THREEG);
 	if (ACPI_SUCCESS(status))
 		return sprintf(buf, "%u\n", result);
 	return sprintf(buf, "Read error\n");
@@ -1464,6 +1494,8 @@ static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
 		return sprintf(buf, "AMW0 v2\n");
 	case ACER_WMID:
 		return sprintf(buf, "WMID\n");
+	case ACER_WMID_v2:
+		return sprintf(buf, "WMID v2\n");
 	default:
 		return sprintf(buf, "Error!\n");
 	}
@@ -1883,12 +1915,20 @@ static int __init acer_wmi_init(void)
 	if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
 		interface = &wmid_interface;
 
+	if (wmi_has_guid(WMID_GUID3))
+		interface = &wmid_v2_interface;
+
+	if (interface)
+		dmi_walk(type_aa_dmi_decode, NULL);
+
 	if (wmi_has_guid(WMID_GUID2) && interface) {
-		if (ACPI_FAILURE(WMID_set_capabilities())) {
+		if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
 			pr_err("Unable to detect available WMID devices\n");
 			return -ENODEV;
 		}
-	} else if (!wmi_has_guid(WMID_GUID2) && interface) {
+		/* WMID always provides brightness methods */
+		interface->capability |= ACER_CAP_BRIGHTNESS;
+	} else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
 		pr_err("No WMID device detection method found\n");
 		return -ENODEV;
 	}
@@ -1912,7 +1952,7 @@ static int __init acer_wmi_init(void)
 
 	set_quirks();
 
-	if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
+	if (acpi_video_backlight_support()) {
 		interface->capability &= ~ACER_CAP_BRIGHTNESS;
 		pr_info("Brightness must be controlled by "
 		       "generic video driver\n");
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index fa6d7ec68b2..edaccad9b5b 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -4,6 +4,7 @@
  *
  *  Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
  *  Copyright (C) 2006-2007 Corentin Chary
+ *  Copyright (C) 2011 Wind River Systems
  *
  *  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
@@ -48,6 +49,7 @@
 #include <linux/uaccess.h>
 #include <linux/input.h>
 #include <linux/input/sparse-keymap.h>
+#include <linux/input-polldev.h>
 #include <linux/rfkill.h>
 #include <linux/slab.h>
 #include <linux/dmi.h>
@@ -83,26 +85,32 @@ static int wlan_status = 1;
 static int bluetooth_status = 1;
 static int wimax_status = -1;
 static int wwan_status = -1;
+static int als_status;
 
 module_param(wlan_status, int, 0444);
 MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot "
 		 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
-		 "default is 1");
+		 "default is -1");
 
 module_param(bluetooth_status, int, 0444);
 MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot "
 		 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
-		 "default is 1");
+		 "default is -1");
 
 module_param(wimax_status, int, 0444);
 MODULE_PARM_DESC(wimax_status, "Set the wireless status on boot "
 		 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
-		 "default is 1");
+		 "default is -1");
 
 module_param(wwan_status, int, 0444);
 MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot "
 		 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
-		 "default is 1");
+		 "default is -1");
+
+module_param(als_status, int, 0444);
+MODULE_PARM_DESC(als_status, "Set the ALS status on boot "
+		 "(0 = disabled, 1 = enabled). "
+		 "default is 0");
 
 /*
  * Some events we use, same for all Asus
@@ -173,6 +181,29 @@ MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot "
 #define METHOD_KBD_LIGHT_SET	"SLKB"
 #define METHOD_KBD_LIGHT_GET	"GLKB"
 
+/* For Pegatron Lucid tablet */
+#define DEVICE_NAME_PEGA	"Lucid"
+
+#define METHOD_PEGA_ENABLE	"ENPR"
+#define METHOD_PEGA_DISABLE	"DAPR"
+#define PEGA_WLAN	0x00
+#define PEGA_BLUETOOTH	0x01
+#define PEGA_WWAN	0x02
+#define PEGA_ALS	0x04
+#define PEGA_ALS_POWER	0x05
+
+#define METHOD_PEGA_READ	"RDLN"
+#define PEGA_READ_ALS_H	0x02
+#define PEGA_READ_ALS_L	0x03
+
+#define PEGA_ACCEL_NAME "pega_accel"
+#define PEGA_ACCEL_DESC "Pegatron Lucid Tablet Accelerometer"
+#define METHOD_XLRX "XLRX"
+#define METHOD_XLRY "XLRY"
+#define METHOD_XLRZ "XLRZ"
+#define PEGA_ACC_CLAMP 512 /* 1G accel is reported as ~256, so clamp to 2G */
+#define PEGA_ACC_RETRIES 3
+
 /*
  * Define a specific led structure to keep the main structure clean
  */
@@ -185,6 +216,15 @@ struct asus_led {
 };
 
 /*
+ * Same thing for rfkill
+ */
+struct asus_pega_rfkill {
+	int control_id;		/* type of control. Maps to PEGA_* values */
+	struct rfkill *rfkill;
+	struct asus_laptop *asus;
+};
+
+/*
  * This is the main structure, we can use it to store anything interesting
  * about the hotk device
  */
@@ -198,6 +238,7 @@ struct asus_laptop {
 
 	struct input_dev *inputdev;
 	struct key_entry *keymap;
+	struct input_polled_dev *pega_accel_poll;
 
 	struct asus_led mled;
 	struct asus_led tled;
@@ -209,9 +250,18 @@ struct asus_laptop {
 
 	int wireless_status;
 	bool have_rsts;
+	bool is_pega_lucid;
+	bool pega_acc_live;
+	int pega_acc_x;
+	int pega_acc_y;
+	int pega_acc_z;
 
 	struct rfkill *gps_rfkill;
 
+	struct asus_pega_rfkill wlanrfk;
+	struct asus_pega_rfkill btrfk;
+	struct asus_pega_rfkill wwanrfk;
+
 	acpi_handle handle;	/* the handle of the hotk device */
 	u32 ledd_status;	/* status of the LED display */
 	u8 light_level;		/* light sensor level */
@@ -323,6 +373,127 @@ static int acpi_check_handle(acpi_handle handle, const char *method,
 	return 0;
 }
 
+static bool asus_check_pega_lucid(struct asus_laptop *asus)
+{
+	return !strcmp(asus->name, DEVICE_NAME_PEGA) &&
+	   !acpi_check_handle(asus->handle, METHOD_PEGA_ENABLE, NULL) &&
+	   !acpi_check_handle(asus->handle, METHOD_PEGA_DISABLE, NULL) &&
+	   !acpi_check_handle(asus->handle, METHOD_PEGA_READ, NULL);
+}
+
+static int asus_pega_lucid_set(struct asus_laptop *asus, int unit, bool enable)
+{
+	char *method = enable ? METHOD_PEGA_ENABLE : METHOD_PEGA_DISABLE;
+	return write_acpi_int(asus->handle, method, unit);
+}
+
+static int pega_acc_axis(struct asus_laptop *asus, int curr, char *method)
+{
+	int i, delta;
+	unsigned long long val;
+	for (i = 0; i < PEGA_ACC_RETRIES; i++) {
+		acpi_evaluate_integer(asus->handle, method, NULL, &val);
+
+		/* The output is noisy.  From reading the ASL
+		 * dissassembly, timeout errors are returned with 1's
+		 * in the high word, and the lack of locking around
+		 * thei hi/lo byte reads means that a transition
+		 * between (for example) -1 and 0 could be read as
+		 * 0xff00 or 0x00ff. */
+		delta = abs(curr - (short)val);
+		if (delta < 128 && !(val & ~0xffff))
+			break;
+	}
+	return clamp_val((short)val, -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP);
+}
+
+static void pega_accel_poll(struct input_polled_dev *ipd)
+{
+	struct device *parent = ipd->input->dev.parent;
+	struct asus_laptop *asus = dev_get_drvdata(parent);
+
+	/* In some cases, the very first call to poll causes a
+	 * recursive fault under the polldev worker.  This is
+	 * apparently related to very early userspace access to the
+	 * device, and perhaps a firmware bug. Fake the first report. */
+	if (!asus->pega_acc_live) {
+		asus->pega_acc_live = true;
+		input_report_abs(ipd->input, ABS_X, 0);
+		input_report_abs(ipd->input, ABS_Y, 0);
+		input_report_abs(ipd->input, ABS_Z, 0);
+		input_sync(ipd->input);
+		return;
+	}
+
+	asus->pega_acc_x = pega_acc_axis(asus, asus->pega_acc_x, METHOD_XLRX);
+	asus->pega_acc_y = pega_acc_axis(asus, asus->pega_acc_y, METHOD_XLRY);
+	asus->pega_acc_z = pega_acc_axis(asus, asus->pega_acc_z, METHOD_XLRZ);
+
+	/* Note transform, convert to "right/up/out" in the native
+	 * landscape orientation (i.e. the vector is the direction of
+	 * "real up" in the device's cartiesian coordinates). */
+	input_report_abs(ipd->input, ABS_X, -asus->pega_acc_x);
+	input_report_abs(ipd->input, ABS_Y, -asus->pega_acc_y);
+	input_report_abs(ipd->input, ABS_Z,  asus->pega_acc_z);
+	input_sync(ipd->input);
+}
+
+static void pega_accel_exit(struct asus_laptop *asus)
+{
+	if (asus->pega_accel_poll) {
+		input_unregister_polled_device(asus->pega_accel_poll);
+		input_free_polled_device(asus->pega_accel_poll);
+	}
+	asus->pega_accel_poll = NULL;
+}
+
+static int pega_accel_init(struct asus_laptop *asus)
+{
+	int err;
+	struct input_polled_dev *ipd;
+
+	if (!asus->is_pega_lucid)
+		return -ENODEV;
+
+	if (acpi_check_handle(asus->handle, METHOD_XLRX, NULL) ||
+	    acpi_check_handle(asus->handle, METHOD_XLRY, NULL) ||
+	    acpi_check_handle(asus->handle, METHOD_XLRZ, NULL))
+		return -ENODEV;
+
+	ipd = input_allocate_polled_device();
+	if (!ipd)
+		return -ENOMEM;
+
+	ipd->poll = pega_accel_poll;
+	ipd->poll_interval = 125;
+	ipd->poll_interval_min = 50;
+	ipd->poll_interval_max = 2000;
+
+	ipd->input->name = PEGA_ACCEL_DESC;
+	ipd->input->phys = PEGA_ACCEL_NAME "/input0";
+	ipd->input->dev.parent = &asus->platform_device->dev;
+	ipd->input->id.bustype = BUS_HOST;
+
+	set_bit(EV_ABS, ipd->input->evbit);
+	input_set_abs_params(ipd->input, ABS_X,
+			     -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
+	input_set_abs_params(ipd->input, ABS_Y,
+			     -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
+	input_set_abs_params(ipd->input, ABS_Z,
+			     -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
+
+	err = input_register_polled_device(ipd);
+	if (err)
+		goto exit;
+
+	asus->pega_accel_poll = ipd;
+	return 0;
+
+exit:
+	input_free_polled_device(ipd);
+	return err;
+}
+
 /* Generic LED function */
 static int asus_led_set(struct asus_laptop *asus, const char *method,
 			 int value)
@@ -430,17 +601,17 @@ static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev)
 
 static void asus_led_exit(struct asus_laptop *asus)
 {
-	if (asus->mled.led.dev)
+	if (!IS_ERR_OR_NULL(asus->mled.led.dev))
 		led_classdev_unregister(&asus->mled.led);
-	if (asus->tled.led.dev)
+	if (!IS_ERR_OR_NULL(asus->tled.led.dev))
 		led_classdev_unregister(&asus->tled.led);
-	if (asus->pled.led.dev)
+	if (!IS_ERR_OR_NULL(asus->pled.led.dev))
 		led_classdev_unregister(&asus->pled.led);
-	if (asus->rled.led.dev)
+	if (!IS_ERR_OR_NULL(asus->rled.led.dev))
 		led_classdev_unregister(&asus->rled.led);
-	if (asus->gled.led.dev)
+	if (!IS_ERR_OR_NULL(asus->gled.led.dev))
 		led_classdev_unregister(&asus->gled.led);
-	if (asus->kled.led.dev)
+	if (!IS_ERR_OR_NULL(asus->kled.led.dev))
 		led_classdev_unregister(&asus->kled.led);
 	if (asus->led_workqueue) {
 		destroy_workqueue(asus->led_workqueue);
@@ -474,6 +645,13 @@ static int asus_led_init(struct asus_laptop *asus)
 	int r;
 
 	/*
+	 * The Pegatron Lucid has no physical leds, but all methods are
+	 * available in the DSDT...
+	 */
+	if (asus->is_pega_lucid)
+		return 0;
+
+	/*
 	 * Functions that actually update the LED's are called from a
 	 * workqueue. By doing this as separate work rather than when the LED
 	 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
@@ -907,8 +1085,18 @@ static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
  */
 static void asus_als_switch(struct asus_laptop *asus, int value)
 {
-	if (write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value))
-		pr_warn("Error setting light sensor switch\n");
+	int ret;
+
+	if (asus->is_pega_lucid) {
+		ret = asus_pega_lucid_set(asus, PEGA_ALS, value);
+		if (!ret)
+			ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value);
+	} else {
+		ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value);
+	}
+	if (ret)
+		pr_warning("Error setting light sensor switch\n");
+
 	asus->light_switch = value;
 }
 
@@ -964,6 +1152,35 @@ static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
 	return rv;
 }
 
+static int pega_int_read(struct asus_laptop *asus, int arg, int *result)
+{
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg,
+				     &buffer);
+	if (!err) {
+		union acpi_object *obj = buffer.pointer;
+		if (obj && obj->type == ACPI_TYPE_INTEGER)
+			*result = obj->integer.value;
+		else
+			err = -EIO;
+	}
+	return err;
+}
+
+static ssize_t show_lsvalue(struct device *dev,
+			    struct device_attribute *attr, char *buf)
+{
+	struct asus_laptop *asus = dev_get_drvdata(dev);
+	int err, hi, lo;
+
+	err = pega_int_read(asus, PEGA_READ_ALS_H, &hi);
+	if (!err)
+		err = pega_int_read(asus, PEGA_READ_ALS_L, &lo);
+	if (!err)
+		return sprintf(buf, "%d\n", 10 * hi + lo);
+	return err;
+}
+
 /*
  * GPS
  */
@@ -1062,6 +1279,86 @@ static int asus_rfkill_init(struct asus_laptop *asus)
 	return result;
 }
 
+static int pega_rfkill_set(void *data, bool blocked)
+{
+	struct asus_pega_rfkill *pega_rfk = data;
+
+	int ret = asus_pega_lucid_set(pega_rfk->asus, pega_rfk->control_id, !blocked);
+	pr_warn("Setting rfkill %d, to %d; returned %d\n", pega_rfk->control_id, !blocked, ret);
+
+	return ret;
+}
+
+static const struct rfkill_ops pega_rfkill_ops = {
+	.set_block = pega_rfkill_set,
+};
+
+static void pega_rfkill_terminate(struct asus_pega_rfkill *pega_rfk)
+{
+	pr_warn("Terminating %d\n", pega_rfk->control_id);
+	if (pega_rfk->rfkill) {
+		rfkill_unregister(pega_rfk->rfkill);
+		rfkill_destroy(pega_rfk->rfkill);
+		pega_rfk->rfkill = NULL;
+	}
+}
+
+static void pega_rfkill_exit(struct asus_laptop *asus)
+{
+	pega_rfkill_terminate(&asus->wwanrfk);
+	pega_rfkill_terminate(&asus->btrfk);
+	pega_rfkill_terminate(&asus->wlanrfk);
+}
+
+static int pega_rfkill_setup(struct asus_laptop *asus, struct asus_pega_rfkill *pega_rfk,
+		const char *name, int controlid, int rfkill_type)
+{
+	int result;
+
+	pr_warn("Setting up rfk %s, control %d, type %d\n", name, controlid, rfkill_type);
+	pega_rfk->control_id = controlid;
+	pega_rfk->asus = asus;
+	pega_rfk->rfkill = rfkill_alloc(name, &asus->platform_device->dev,
+					rfkill_type, &pega_rfkill_ops, pega_rfk);
+	if (!pega_rfk->rfkill)
+		return -EINVAL;
+
+	result = rfkill_register(pega_rfk->rfkill);
+	if (result) {
+		rfkill_destroy(pega_rfk->rfkill);
+		pega_rfk->rfkill = NULL;
+	}
+
+	return result;
+}
+
+static int pega_rfkill_init(struct asus_laptop *asus)
+{
+	int ret = 0;
+
+	if(!asus->is_pega_lucid)
+		return -ENODEV;
+
+	ret = pega_rfkill_setup(asus, &asus->wlanrfk, "pega-wlan", PEGA_WLAN, RFKILL_TYPE_WLAN);
+	if(ret)
+		return ret;
+	ret = pega_rfkill_setup(asus, &asus->btrfk, "pega-bt", PEGA_BLUETOOTH, RFKILL_TYPE_BLUETOOTH);
+	if(ret)
+		goto err_btrfk;
+	ret = pega_rfkill_setup(asus, &asus->wwanrfk, "pega-wwan", PEGA_WWAN, RFKILL_TYPE_WWAN);
+	if(ret)
+		goto err_wwanrfk;
+
+	pr_warn("Pega rfkill init succeeded\n");
+	return 0;
+err_wwanrfk:
+	pega_rfkill_terminate(&asus->btrfk);
+err_btrfk:
+	pega_rfkill_terminate(&asus->wlanrfk);
+
+	return ret;
+}
+
 /*
  * Input device (i.e. hotkeys)
  */
@@ -1141,6 +1438,14 @@ static void asus_acpi_notify(struct acpi_device *device, u32 event)
 		}
 		return ;
 	}
+
+	/* Accelerometer "coarse orientation change" event */
+	if (asus->pega_accel_poll && event == 0xEA) {
+		kobject_uevent(&asus->pega_accel_poll->input->dev.kobj,
+			       KOBJ_CHANGE);
+		return ;
+	}
+
 	asus_input_notify(asus, event);
 }
 
@@ -1152,6 +1457,7 @@ static DEVICE_ATTR(wimax, S_IRUGO | S_IWUSR, show_wimax, store_wimax);
 static DEVICE_ATTR(wwan, S_IRUGO | S_IWUSR, show_wwan, store_wwan);
 static DEVICE_ATTR(display, S_IWUSR, NULL, store_disp);
 static DEVICE_ATTR(ledd, S_IRUGO | S_IWUSR, show_ledd, store_ledd);
+static DEVICE_ATTR(ls_value, S_IRUGO, show_lsvalue, NULL);
 static DEVICE_ATTR(ls_level, S_IRUGO | S_IWUSR, show_lslvl, store_lslvl);
 static DEVICE_ATTR(ls_switch, S_IRUGO | S_IWUSR, show_lssw, store_lssw);
 static DEVICE_ATTR(gps, S_IRUGO | S_IWUSR, show_gps, store_gps);
@@ -1164,6 +1470,7 @@ static struct attribute *asus_attributes[] = {
 	&dev_attr_wwan.attr,
 	&dev_attr_display.attr,
 	&dev_attr_ledd.attr,
+	&dev_attr_ls_value.attr,
 	&dev_attr_ls_level.attr,
 	&dev_attr_ls_switch.attr,
 	&dev_attr_gps.attr,
@@ -1180,6 +1487,19 @@ static mode_t asus_sysfs_is_visible(struct kobject *kobj,
 	acpi_handle handle = asus->handle;
 	bool supported;
 
+	if (asus->is_pega_lucid) {
+		/* no ls_level interface on the Lucid */
+		if (attr == &dev_attr_ls_switch.attr)
+			supported = true;
+		else if (attr == &dev_attr_ls_level.attr)
+			supported = false;
+		else
+			goto normal;
+
+		return supported;
+	}
+
+normal:
 	if (attr == &dev_attr_wlan.attr) {
 		supported = !acpi_check_handle(handle, METHOD_WLAN, NULL);
 
@@ -1202,8 +1522,9 @@ static mode_t asus_sysfs_is_visible(struct kobject *kobj,
 	} else if (attr == &dev_attr_ls_switch.attr ||
 		   attr == &dev_attr_ls_level.attr) {
 		supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) &&
-			    !acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL);
-
+			!acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL);
+	} else if (attr == &dev_attr_ls_value.attr) {
+		supported = asus->is_pega_lucid;
 	} else if (attr == &dev_attr_gps.attr) {
 		supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) &&
 			    !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) &&
@@ -1258,7 +1579,7 @@ static struct platform_driver platform_driver = {
 	.driver = {
 		.name = ASUS_LAPTOP_FILE,
 		.owner = THIS_MODULE,
-	}
+	},
 };
 
 /*
@@ -1388,11 +1709,13 @@ static int __devinit asus_acpi_init(struct asus_laptop *asus)
 	asus->ledd_status = 0xFFF;
 
 	/* Set initial values of light sensor and level */
-	asus->light_switch = 0;	/* Default to light sensor disabled */
+	asus->light_switch = !!als_status;
 	asus->light_level = 5;	/* level 5 for sensor sensitivity */
 
-	if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
-	    !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
+	if (asus->is_pega_lucid) {
+		asus_als_switch(asus, asus->light_switch);
+	} else if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
+		   !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
 		asus_als_switch(asus, asus->light_switch);
 		asus_als_level(asus, asus->light_level);
 	}
@@ -1439,9 +1762,10 @@ static int __devinit asus_acpi_add(struct acpi_device *device)
 		goto fail_platform;
 
 	/*
-	 * Register the platform device first.  It is used as a parent for the
-	 * sub-devices below.
+	 * Need platform type detection first, then the platform
+	 * device.  It is used as a parent for the sub-devices below.
 	 */
+	asus->is_pega_lucid = asus_check_pega_lucid(asus);
 	result = asus_platform_init(asus);
 	if (result)
 		goto fail_platform;
@@ -1465,9 +1789,21 @@ static int __devinit asus_acpi_add(struct acpi_device *device)
 	if (result)
 		goto fail_rfkill;
 
+	result = pega_accel_init(asus);
+	if (result && result != -ENODEV)
+		goto fail_pega_accel;
+
+	result = pega_rfkill_init(asus);
+	if (result && result != -ENODEV)
+		goto fail_pega_rfkill;
+
 	asus_device_present = true;
 	return 0;
 
+fail_pega_rfkill:
+	pega_accel_exit(asus);
+fail_pega_accel:
+	asus_rfkill_exit(asus);
 fail_rfkill:
 	asus_led_exit(asus);
 fail_led:
@@ -1491,6 +1827,8 @@ static int asus_acpi_remove(struct acpi_device *device, int type)
 	asus_rfkill_exit(asus);
 	asus_led_exit(asus);
 	asus_input_exit(asus);
+	pega_accel_exit(asus);
+	pega_rfkill_exit(asus);
 	asus_platform_exit(asus);
 
 	kfree(asus->name);
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 95cba9ebf6c..d1049ee3c9e 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -453,7 +453,9 @@ static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
 
 static void asus_wmi_led_exit(struct asus_wmi *asus)
 {
-	if (asus->tpd_led.dev)
+	if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
+		led_classdev_unregister(&asus->kbd_led);
+	if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
 		led_classdev_unregister(&asus->tpd_led);
 	if (asus->led_workqueue)
 		destroy_workqueue(asus->led_workqueue);
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index f31fa4efa72..a43cfd906c6 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -60,6 +60,22 @@ struct calling_interface_structure {
 	struct calling_interface_token tokens[];
 } __packed;
 
+struct quirk_entry {
+	u8 touchpad_led;
+};
+
+static struct quirk_entry *quirks;
+
+static struct quirk_entry quirk_dell_vostro_v130 = {
+	.touchpad_led = 1,
+};
+
+static int dmi_matched(const struct dmi_system_id *dmi)
+{
+	quirks = dmi->driver_data;
+	return 1;
+}
+
 static int da_command_address;
 static int da_command_code;
 static int da_num_tokens;
@@ -149,6 +165,27 @@ static struct dmi_system_id __devinitdata dell_blacklist[] = {
 	{}
 };
 
+static struct dmi_system_id __devinitdata dell_quirks[] = {
+	{
+		.callback = dmi_matched,
+		.ident = "Dell Vostro V130",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V130"),
+		},
+		.driver_data = &quirk_dell_vostro_v130,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "Dell Vostro V131",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"),
+		},
+		.driver_data = &quirk_dell_vostro_v130,
+	},
+};
+
 static struct calling_interface_buffer *buffer;
 static struct page *bufferpage;
 static DEFINE_MUTEX(buffer_mutex);
@@ -552,6 +589,44 @@ static const struct backlight_ops dell_ops = {
 	.update_status  = dell_send_intensity,
 };
 
+static void touchpad_led_on()
+{
+	int command = 0x97;
+	char data = 1;
+	i8042_command(&data, command | 1 << 12);
+}
+
+static void touchpad_led_off()
+{
+	int command = 0x97;
+	char data = 2;
+	i8042_command(&data, command | 1 << 12);
+}
+
+static void touchpad_led_set(struct led_classdev *led_cdev,
+	enum led_brightness value)
+{
+	if (value > 0)
+		touchpad_led_on();
+	else
+		touchpad_led_off();
+}
+
+static struct led_classdev touchpad_led = {
+	.name = "dell-laptop::touchpad",
+	.brightness_set = touchpad_led_set,
+};
+
+static int __devinit touchpad_led_init(struct device *dev)
+{
+	return led_classdev_register(dev, &touchpad_led);
+}
+
+static void touchpad_led_exit(void)
+{
+	led_classdev_unregister(&touchpad_led);
+}
+
 static bool dell_laptop_i8042_filter(unsigned char data, unsigned char str,
 			      struct serio *port)
 {
@@ -584,6 +659,10 @@ static int __init dell_init(void)
 	if (!dmi_check_system(dell_device_table))
 		return -ENODEV;
 
+	quirks = NULL;
+	/* find if this machine support other functions */
+	dmi_check_system(dell_quirks);
+
 	dmi_walk(find_tokens, NULL);
 
 	if (!da_tokens)  {
@@ -626,6 +705,9 @@ static int __init dell_init(void)
 		goto fail_filter;
 	}
 
+	if (quirks && quirks->touchpad_led)
+		touchpad_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,
@@ -692,6 +774,8 @@ fail_platform_driver:
 static void __exit dell_exit(void)
 {
 	debugfs_remove_recursive(dell_laptop_dir);
+	if (quirks && quirks->touchpad_led)
+		touchpad_led_exit();
 	i8042_remove_filter(dell_laptop_i8042_filter);
 	cancel_delayed_work_sync(&dell_rfkill_work);
 	backlight_device_unregister(dell_backlight_device);
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 1c45d92e216..ea44abd8df4 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -568,7 +568,7 @@ static int eeepc_led_init(struct eeepc_laptop *eeepc)
 
 static void eeepc_led_exit(struct eeepc_laptop *eeepc)
 {
-	if (eeepc->tpd_led.dev)
+	if (!IS_ERR_OR_NULL(eeepc->tpd_led.dev))
 		led_classdev_unregister(&eeepc->tpd_led);
 	if (eeepc->led_workqueue)
 		destroy_workqueue(eeepc->led_workqueue);
diff --git a/drivers/platform/x86/hp_accel.c b/drivers/platform/x86/hp_accel.c
index 1b52d00e2f9..64b454855f6 100644
--- a/drivers/platform/x86/hp_accel.c
+++ b/drivers/platform/x86/hp_accel.c
@@ -76,6 +76,7 @@ static inline void delayed_sysfs_set(struct led_classdev *led_cdev,
 /* For automatic insertion of the module */
 static struct acpi_device_id lis3lv02d_device_ids[] = {
 	{"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */
+	{"HPQ6000", 0}, /* HP Mobile Data Protection System PNP */
 	{"", 0},
 };
 MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids);
@@ -228,6 +229,10 @@ static struct dmi_system_id lis3lv02d_dmi_ids[] = {
 	AXIS_DMI_MATCH("HPB522x", "HP ProBook 522", xy_swap),
 	AXIS_DMI_MATCH("HPB532x", "HP ProBook 532", y_inverted),
 	AXIS_DMI_MATCH("Mini510x", "HP Mini 510", xy_rotated_left_usd),
+	AXIS_DMI_MATCH("HPB63xx", "HP ProBook 63", xy_swap),
+	AXIS_DMI_MATCH("HPB64xx", "HP ProBook 64", xy_swap),
+	AXIS_DMI_MATCH("HPB64xx", "HP EliteBook 84", xy_swap),
+	AXIS_DMI_MATCH("HPB65xx", "HP ProBook 65", x_inverted),
 	{ NULL, }
 /* Laptop models without axis info (yet):
  * "NC6910" "HP Compaq 6910"
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index 0c595410e78..a36addf106a 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -34,6 +34,8 @@
 #include <linux/input/sparse-keymap.h>
 #include <linux/backlight.h>
 #include <linux/fb.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
 
 #define IDEAPAD_RFKILL_DEV_NUM	(3)
 
@@ -42,15 +44,41 @@
 #define CFG_WIFI_BIT	(18)
 #define CFG_CAMERA_BIT	(19)
 
+enum {
+	VPCCMD_R_VPC1 = 0x10,
+	VPCCMD_R_BL_MAX,
+	VPCCMD_R_BL,
+	VPCCMD_W_BL,
+	VPCCMD_R_WIFI,
+	VPCCMD_W_WIFI,
+	VPCCMD_R_BT,
+	VPCCMD_W_BT,
+	VPCCMD_R_BL_POWER,
+	VPCCMD_R_NOVO,
+	VPCCMD_R_VPC2,
+	VPCCMD_R_TOUCHPAD,
+	VPCCMD_W_TOUCHPAD,
+	VPCCMD_R_CAMERA,
+	VPCCMD_W_CAMERA,
+	VPCCMD_R_3G,
+	VPCCMD_W_3G,
+	VPCCMD_R_ODD, /* 0x21 */
+	VPCCMD_R_RF = 0x23,
+	VPCCMD_W_RF,
+	VPCCMD_W_BL_POWER = 0x33,
+};
+
 struct ideapad_private {
 	struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
 	struct platform_device *platform_device;
 	struct input_dev *inputdev;
 	struct backlight_device *blightdev;
+	struct dentry *debug;
 	unsigned long cfg;
 };
 
 static acpi_handle ideapad_handle;
+static struct ideapad_private *ideapad_priv;
 static bool no_bt_rfkill;
 module_param(no_bt_rfkill, bool, 0444);
 MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
@@ -164,6 +192,146 @@ static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
 }
 
 /*
+ * debugfs
+ */
+#define DEBUGFS_EVENT_LEN (4096)
+static int debugfs_status_show(struct seq_file *s, void *data)
+{
+	unsigned long value;
+
+	if (!read_ec_data(ideapad_handle, VPCCMD_R_BL_MAX, &value))
+		seq_printf(s, "Backlight max:\t%lu\n", value);
+	if (!read_ec_data(ideapad_handle, VPCCMD_R_BL, &value))
+		seq_printf(s, "Backlight now:\t%lu\n", value);
+	if (!read_ec_data(ideapad_handle, VPCCMD_R_BL_POWER, &value))
+		seq_printf(s, "BL power value:\t%s\n", value ? "On" : "Off");
+	seq_printf(s, "=====================\n");
+
+	if (!read_ec_data(ideapad_handle, VPCCMD_R_RF, &value))
+		seq_printf(s, "Radio status:\t%s(%lu)\n",
+			   value ? "On" : "Off", value);
+	if (!read_ec_data(ideapad_handle, VPCCMD_R_WIFI, &value))
+		seq_printf(s, "Wifi status:\t%s(%lu)\n",
+			   value ? "On" : "Off", value);
+	if (!read_ec_data(ideapad_handle, VPCCMD_R_BT, &value))
+		seq_printf(s, "BT status:\t%s(%lu)\n",
+			   value ? "On" : "Off", value);
+	if (!read_ec_data(ideapad_handle, VPCCMD_R_3G, &value))
+		seq_printf(s, "3G status:\t%s(%lu)\n",
+			   value ? "On" : "Off", value);
+	seq_printf(s, "=====================\n");
+
+	if (!read_ec_data(ideapad_handle, VPCCMD_R_TOUCHPAD, &value))
+		seq_printf(s, "Touchpad status:%s(%lu)\n",
+			   value ? "On" : "Off", value);
+	if (!read_ec_data(ideapad_handle, VPCCMD_R_CAMERA, &value))
+		seq_printf(s, "Camera status:\t%s(%lu)\n",
+			   value ? "On" : "Off", value);
+
+	return 0;
+}
+
+static int debugfs_status_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, debugfs_status_show, NULL);
+}
+
+static const struct file_operations debugfs_status_fops = {
+	.owner = THIS_MODULE,
+	.open = debugfs_status_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static int debugfs_cfg_show(struct seq_file *s, void *data)
+{
+	if (!ideapad_priv) {
+		seq_printf(s, "cfg: N/A\n");
+	} else {
+		seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
+			   ideapad_priv->cfg);
+		if (test_bit(CFG_BT_BIT, &ideapad_priv->cfg))
+			seq_printf(s, "Bluetooth ");
+		if (test_bit(CFG_3G_BIT, &ideapad_priv->cfg))
+			seq_printf(s, "3G ");
+		if (test_bit(CFG_WIFI_BIT, &ideapad_priv->cfg))
+			seq_printf(s, "Wireless ");
+		if (test_bit(CFG_CAMERA_BIT, &ideapad_priv->cfg))
+			seq_printf(s, "Camera ");
+		seq_printf(s, "\nGraphic: ");
+		switch ((ideapad_priv->cfg)&0x700) {
+		case 0x100:
+			seq_printf(s, "Intel");
+			break;
+		case 0x200:
+			seq_printf(s, "ATI");
+			break;
+		case 0x300:
+			seq_printf(s, "Nvidia");
+			break;
+		case 0x400:
+			seq_printf(s, "Intel and ATI");
+			break;
+		case 0x500:
+			seq_printf(s, "Intel and Nvidia");
+			break;
+		}
+		seq_printf(s, "\n");
+	}
+	return 0;
+}
+
+static int debugfs_cfg_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, debugfs_cfg_show, NULL);
+}
+
+static const struct file_operations debugfs_cfg_fops = {
+	.owner = THIS_MODULE,
+	.open = debugfs_cfg_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static int __devinit ideapad_debugfs_init(struct ideapad_private *priv)
+{
+	struct dentry *node;
+
+	priv->debug = debugfs_create_dir("ideapad", NULL);
+	if (priv->debug == NULL) {
+		pr_err("failed to create debugfs directory");
+		goto errout;
+	}
+
+	node = debugfs_create_file("cfg", S_IRUGO, priv->debug, NULL,
+				   &debugfs_cfg_fops);
+	if (!node) {
+		pr_err("failed to create cfg in debugfs");
+		goto errout;
+	}
+
+	node = debugfs_create_file("status", S_IRUGO, priv->debug, NULL,
+				   &debugfs_status_fops);
+	if (!node) {
+		pr_err("failed to create event in debugfs");
+		goto errout;
+	}
+
+	return 0;
+
+errout:
+	return -ENOMEM;
+}
+
+static void ideapad_debugfs_exit(struct ideapad_private *priv)
+{
+	debugfs_remove_recursive(priv->debug);
+	priv->debug = NULL;
+}
+
+/*
  * sysfs
  */
 static ssize_t show_ideapad_cam(struct device *dev,
@@ -172,7 +340,7 @@ static ssize_t show_ideapad_cam(struct device *dev,
 {
 	unsigned long result;
 
-	if (read_ec_data(ideapad_handle, 0x1D, &result))
+	if (read_ec_data(ideapad_handle, VPCCMD_R_CAMERA, &result))
 		return sprintf(buf, "-1\n");
 	return sprintf(buf, "%lu\n", result);
 }
@@ -187,7 +355,7 @@ static ssize_t store_ideapad_cam(struct device *dev,
 		return 0;
 	if (sscanf(buf, "%i", &state) != 1)
 		return -EINVAL;
-	ret = write_ec_cmd(ideapad_handle, 0x1E, state);
+	ret = write_ec_cmd(ideapad_handle, VPCCMD_W_CAMERA, state);
 	if (ret < 0)
 		return ret;
 	return count;
@@ -195,20 +363,8 @@ static ssize_t store_ideapad_cam(struct device *dev,
 
 static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
 
-static ssize_t show_ideapad_cfg(struct device *dev,
-				struct device_attribute *attr,
-				char *buf)
-{
-	struct ideapad_private *priv = dev_get_drvdata(dev);
-
-	return sprintf(buf, "0x%.8lX\n", priv->cfg);
-}
-
-static DEVICE_ATTR(cfg, 0444, show_ideapad_cfg, NULL);
-
 static struct attribute *ideapad_attributes[] = {
 	&dev_attr_camera_power.attr,
-	&dev_attr_cfg.attr,
 	NULL
 };
 
@@ -244,9 +400,9 @@ struct ideapad_rfk_data {
 };
 
 const struct ideapad_rfk_data ideapad_rfk_data[] = {
-	{ "ideapad_wlan",      CFG_WIFI_BIT, 0x15, RFKILL_TYPE_WLAN },
-	{ "ideapad_bluetooth", CFG_BT_BIT,   0x17, RFKILL_TYPE_BLUETOOTH },
-	{ "ideapad_3g",        CFG_3G_BIT,   0x20, RFKILL_TYPE_WWAN },
+	{ "ideapad_wlan",    CFG_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
+	{ "ideapad_bluetooth", CFG_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
+	{ "ideapad_3g",        CFG_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
 };
 
 static int ideapad_rfk_set(void *data, bool blocked)
@@ -260,13 +416,12 @@ static struct rfkill_ops ideapad_rfk_ops = {
 	.set_block = ideapad_rfk_set,
 };
 
-static void ideapad_sync_rfk_state(struct acpi_device *adevice)
+static void ideapad_sync_rfk_state(struct ideapad_private *priv)
 {
-	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
 	unsigned long hw_blocked;
 	int i;
 
-	if (read_ec_data(ideapad_handle, 0x23, &hw_blocked))
+	if (read_ec_data(ideapad_handle, VPCCMD_R_RF, &hw_blocked))
 		return;
 	hw_blocked = !hw_blocked;
 
@@ -363,8 +518,10 @@ static void ideapad_platform_exit(struct ideapad_private *priv)
  * input device
  */
 static const struct key_entry ideapad_keymap[] = {
-	{ KE_KEY, 0x06, { KEY_SWITCHVIDEOMODE } },
-	{ KE_KEY, 0x0D, { KEY_WLAN } },
+	{ KE_KEY, 6,  { KEY_SWITCHVIDEOMODE } },
+	{ KE_KEY, 13, { KEY_WLAN } },
+	{ KE_KEY, 16, { KEY_PROG1 } },
+	{ KE_KEY, 17, { KEY_PROG2 } },
 	{ KE_END, 0 },
 };
 
@@ -419,6 +576,18 @@ static void ideapad_input_report(struct ideapad_private *priv,
 	sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
 }
 
+static void ideapad_input_novokey(struct ideapad_private *priv)
+{
+	unsigned long long_pressed;
+
+	if (read_ec_data(ideapad_handle, VPCCMD_R_NOVO, &long_pressed))
+		return;
+	if (long_pressed)
+		ideapad_input_report(priv, 17);
+	else
+		ideapad_input_report(priv, 16);
+}
+
 /*
  * backlight
  */
@@ -426,16 +595,17 @@ static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
 {
 	unsigned long now;
 
-	if (read_ec_data(ideapad_handle, 0x12, &now))
+	if (read_ec_data(ideapad_handle, VPCCMD_R_BL, &now))
 		return -EIO;
 	return now;
 }
 
 static int ideapad_backlight_update_status(struct backlight_device *blightdev)
 {
-	if (write_ec_cmd(ideapad_handle, 0x13, blightdev->props.brightness))
+	if (write_ec_cmd(ideapad_handle, VPCCMD_W_BL,
+			 blightdev->props.brightness))
 		return -EIO;
-	if (write_ec_cmd(ideapad_handle, 0x33,
+	if (write_ec_cmd(ideapad_handle, VPCCMD_W_BL_POWER,
 			 blightdev->props.power == FB_BLANK_POWERDOWN ? 0 : 1))
 		return -EIO;
 
@@ -453,11 +623,11 @@ static int ideapad_backlight_init(struct ideapad_private *priv)
 	struct backlight_properties props;
 	unsigned long max, now, power;
 
-	if (read_ec_data(ideapad_handle, 0x11, &max))
+	if (read_ec_data(ideapad_handle, VPCCMD_R_BL_MAX, &max))
 		return -EIO;
-	if (read_ec_data(ideapad_handle, 0x12, &now))
+	if (read_ec_data(ideapad_handle, VPCCMD_R_BL, &now))
 		return -EIO;
-	if (read_ec_data(ideapad_handle, 0x18, &power))
+	if (read_ec_data(ideapad_handle, VPCCMD_R_BL_POWER, &power))
 		return -EIO;
 
 	memset(&props, 0, sizeof(struct backlight_properties));
@@ -493,7 +663,9 @@ static void ideapad_backlight_notify_power(struct ideapad_private *priv)
 	unsigned long power;
 	struct backlight_device *blightdev = priv->blightdev;
 
-	if (read_ec_data(ideapad_handle, 0x18, &power))
+	if (!blightdev)
+		return;
+	if (read_ec_data(ideapad_handle, VPCCMD_R_BL_POWER, &power))
 		return;
 	blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
 }
@@ -504,7 +676,7 @@ static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
 
 	/* if we control brightness via acpi video driver */
 	if (priv->blightdev == NULL) {
-		read_ec_data(ideapad_handle, 0x12, &now);
+		read_ec_data(ideapad_handle, VPCCMD_R_BL, &now);
 		return;
 	}
 
@@ -533,6 +705,7 @@ static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
 	if (!priv)
 		return -ENOMEM;
 	dev_set_drvdata(&adevice->dev, priv);
+	ideapad_priv = priv;
 	ideapad_handle = adevice->handle;
 	priv->cfg = cfg;
 
@@ -540,6 +713,10 @@ static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
 	if (ret)
 		goto platform_failed;
 
+	ret = ideapad_debugfs_init(priv);
+	if (ret)
+		goto debugfs_failed;
+
 	ret = ideapad_input_init(priv);
 	if (ret)
 		goto input_failed;
@@ -550,7 +727,7 @@ static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
 		else
 			priv->rfk[i] = NULL;
 	}
-	ideapad_sync_rfk_state(adevice);
+	ideapad_sync_rfk_state(priv);
 
 	if (!acpi_video_backlight_support()) {
 		ret = ideapad_backlight_init(priv);
@@ -565,6 +742,8 @@ backlight_failed:
 		ideapad_unregister_rfkill(adevice, i);
 	ideapad_input_exit(priv);
 input_failed:
+	ideapad_debugfs_exit(priv);
+debugfs_failed:
 	ideapad_platform_exit(priv);
 platform_failed:
 	kfree(priv);
@@ -580,6 +759,7 @@ static int __devexit ideapad_acpi_remove(struct acpi_device *adevice, int type)
 	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
 		ideapad_unregister_rfkill(adevice, i);
 	ideapad_input_exit(priv);
+	ideapad_debugfs_exit(priv);
 	ideapad_platform_exit(priv);
 	dev_set_drvdata(&adevice->dev, NULL);
 	kfree(priv);
@@ -593,9 +773,9 @@ static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
 	acpi_handle handle = adevice->handle;
 	unsigned long vpc1, vpc2, vpc_bit;
 
-	if (read_ec_data(handle, 0x10, &vpc1))
+	if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
 		return;
-	if (read_ec_data(handle, 0x1A, &vpc2))
+	if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
 		return;
 
 	vpc1 = (vpc2 << 8) | vpc1;
@@ -603,11 +783,14 @@ static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
 		if (test_bit(vpc_bit, &vpc1)) {
 			switch (vpc_bit) {
 			case 9:
-				ideapad_sync_rfk_state(adevice);
+				ideapad_sync_rfk_state(priv);
 				break;
 			case 4:
 				ideapad_backlight_notify_brightness(priv);
 				break;
+			case 3:
+				ideapad_input_novokey(priv);
+				break;
 			case 2:
 				ideapad_backlight_notify_power(priv);
 				break;
diff --git a/drivers/platform/x86/intel_scu_ipcutil.c b/drivers/platform/x86/intel_scu_ipcutil.c
index b93a03259c1..2d0f9136ea9 100644
--- a/drivers/platform/x86/intel_scu_ipcutil.c
+++ b/drivers/platform/x86/intel_scu_ipcutil.c
@@ -24,7 +24,7 @@
 #include <linux/init.h>
 #include <asm/intel_scu_ipc.h>
 
-static u32 major;
+static int major;
 
 #define MAX_FW_SIZE 264192
 
@@ -117,7 +117,11 @@ static const struct file_operations scu_ipc_fops = {
 
 static int __init ipc_module_init(void)
 {
-	return register_chrdev(0, "intel_mid_scu", &scu_ipc_fops);
+	major = register_chrdev(0, "intel_mid_scu", &scu_ipc_fops);
+	if (major < 0)
+		return major;
+
+	return 0;
 }
 
 static void __exit ipc_module_exit(void)
diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c
index 35916301104..09e26bfd464 100644
--- a/drivers/platform/x86/samsung-laptop.c
+++ b/drivers/platform/x86/samsung-laptop.c
@@ -226,6 +226,7 @@ static struct backlight_device *backlight_device;
 static struct mutex sabi_mutex;
 static struct platform_device *sdev;
 static struct rfkill *rfk;
+static bool has_stepping_quirk;
 
 static int force;
 module_param(force, bool, 0);
@@ -370,15 +371,28 @@ static u8 read_brightness(void)
 				  &sretval);
 	if (!retval) {
 		user_brightness = sretval.retval[0];
-		if (user_brightness != 0)
+		if (user_brightness > sabi_config->min_brightness)
 			user_brightness -= sabi_config->min_brightness;
+		else
+			user_brightness = 0;
 	}
 	return user_brightness;
 }
 
 static void set_brightness(u8 user_brightness)
 {
-	u8 user_level = user_brightness - sabi_config->min_brightness;
+	u8 user_level = user_brightness + sabi_config->min_brightness;
+
+	if (has_stepping_quirk && user_level != 0) {
+		/*
+		 * short circuit if the specified level is what's already set
+		 * to prevent the screen from flickering needlessly
+		 */
+		if (user_brightness == read_brightness())
+			return;
+
+		sabi_set_command(sabi_config->commands.set_brightness, 0);
+	}
 
 	sabi_set_command(sabi_config->commands.set_brightness, user_level);
 }
@@ -388,6 +402,40 @@ static int get_brightness(struct backlight_device *bd)
 	return (int)read_brightness();
 }
 
+static void check_for_stepping_quirk(void)
+{
+	u8 initial_level;
+	u8 check_level;
+	u8 orig_level = read_brightness();
+
+	/*
+	 * Some laptops exhibit the strange behaviour of stepping toward
+	 * (rather than setting) the brightness except when changing to/from
+	 * brightness level 0. This behaviour is checked for here and worked
+	 * around in set_brightness.
+	 */
+
+	if (orig_level == 0)
+		set_brightness(1);
+
+	initial_level = read_brightness();
+
+	if (initial_level <= 2)
+		check_level = initial_level + 2;
+	else
+		check_level = initial_level - 2;
+
+	has_stepping_quirk = false;
+	set_brightness(check_level);
+
+	if (read_brightness() != check_level) {
+		has_stepping_quirk = true;
+		pr_info("enabled workaround for brightness stepping quirk\n");
+	}
+
+	set_brightness(orig_level);
+}
+
 static int update_status(struct backlight_device *bd)
 {
 	set_brightness(bd->props.brightness);
@@ -621,6 +669,16 @@ static struct dmi_system_id __initdata samsung_dmi_table[] = {
 		.callback = dmi_check_cb,
 	},
 	{
+		.ident = "N220",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR,
+					"SAMSUNG ELECTRONICS CO., LTD."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "N220"),
+			DMI_MATCH(DMI_BOARD_NAME, "N220"),
+		},
+		.callback = dmi_check_cb,
+	},
+	{
 		.ident = "N150/N210/N220/N230",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR,
@@ -641,6 +699,15 @@ static struct dmi_system_id __initdata samsung_dmi_table[] = {
 		.callback = dmi_check_cb,
 	},
 	{
+		.ident = "R700",
+		.matches = {
+		      DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+		      DMI_MATCH(DMI_PRODUCT_NAME, "SR700"),
+		      DMI_MATCH(DMI_BOARD_NAME, "SR700"),
+		},
+		.callback = dmi_check_cb,
+	},
+	{
 		.ident = "R530/R730",
 		.matches = {
 		      DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
@@ -686,6 +753,33 @@ static struct dmi_system_id __initdata samsung_dmi_table[] = {
 		},
 		.callback = dmi_check_cb,
 	},
+	{
+		.ident = "R528/R728",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "R528/R728"),
+			DMI_MATCH(DMI_BOARD_NAME, "R528/R728"),
+		},
+		.callback = dmi_check_cb,
+	},
+	{
+		.ident = "NC210/NC110",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "NC210/NC110"),
+			DMI_MATCH(DMI_BOARD_NAME, "NC210/NC110"),
+		},
+		.callback = dmi_check_cb,
+	},
+		{
+		.ident = "X520",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "X520"),
+			DMI_MATCH(DMI_BOARD_NAME, "X520"),
+		},
+		.callback = dmi_check_cb,
+	},
 	{ },
 };
 MODULE_DEVICE_TABLE(dmi, samsung_dmi_table);
@@ -770,7 +864,7 @@ static int __init samsung_init(void)
 	sabi_iface = ioremap_nocache(ifaceP, 16);
 	if (!sabi_iface) {
 		pr_err("Can't remap %x\n", ifaceP);
-		goto exit;
+		goto error_no_signature;
 	}
 	if (debug) {
 		printk(KERN_DEBUG "ifaceP = 0x%08x\n", ifaceP);
@@ -794,6 +888,9 @@ static int __init samsung_init(void)
 		}
 	}
 
+	/* Check for stepping quirk */
+	check_for_stepping_quirk();
+
 	/* knock up a platform device to hang stuff off of */
 	sdev = platform_device_register_simple("samsung", -1, NULL, 0);
 	if (IS_ERR(sdev))
@@ -802,7 +899,8 @@ static int __init samsung_init(void)
 	/* create a backlight device to talk to this one */
 	memset(&props, 0, sizeof(struct backlight_properties));
 	props.type = BACKLIGHT_PLATFORM;
-	props.max_brightness = sabi_config->max_brightness;
+	props.max_brightness = sabi_config->max_brightness -
+				sabi_config->min_brightness;
 	backlight_device = backlight_device_register("samsung", &sdev->dev,
 						     NULL, &backlight_ops,
 						     &props);
@@ -821,7 +919,6 @@ static int __init samsung_init(void)
 	if (retval)
 		goto error_file_create;
 
-exit:
 	return 0;
 
 error_file_create:
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index bbd182e178c..c006dee5ebf 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -3281,7 +3281,7 @@ static int sony_pic_add(struct acpi_device *device)
 	/* request IRQ */
 	list_for_each_entry_reverse(irq, &spic_dev.interrupts, list) {
 		if (!request_irq(irq->irq.interrupts[0], sony_pic_irq,
-					IRQF_DISABLED, "sony-laptop", &spic_dev)) {
+					0, "sony-laptop", &spic_dev)) {
 			dprintk("IRQ: %d - triggering: %d - "
 					"polarity: %d - shr: %d\n",
 					irq->irq.interrupts[0],
diff --git a/drivers/platform/x86/topstar-laptop.c b/drivers/platform/x86/topstar-laptop.c
index 4c20447ddbb..d528daa0e81 100644
--- a/drivers/platform/x86/topstar-laptop.c
+++ b/drivers/platform/x86/topstar-laptop.c
@@ -41,6 +41,7 @@ static const struct key_entry topstar_keymap[] = {
 	{ KE_KEY, 0x8c, { KEY_MEDIA } },
 
 	/* Known non hotkey events don't handled or that we don't care yet */
+	{ KE_IGNORE, 0x82, }, /* backlight event */
 	{ KE_IGNORE, 0x8e, },
 	{ KE_IGNORE, 0x8f, },
 	{ KE_IGNORE, 0x90, },
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index cb009b2629e..13ef8c37471 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -47,7 +47,6 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/backlight.h>
-#include <linux/platform_device.h>
 #include <linux/rfkill.h>
 #include <linux/input.h>
 #include <linux/input/sparse-keymap.h>
@@ -63,11 +62,7 @@ MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
 MODULE_LICENSE("GPL");
 
 /* Toshiba ACPI method paths */
-#define METHOD_LCD_BRIGHTNESS	"\\_SB_.PCI0.VGA_.LCD_._BCM"
-#define TOSH_INTERFACE_1	"\\_SB_.VALD"
-#define TOSH_INTERFACE_2	"\\_SB_.VALZ"
 #define METHOD_VIDEO_OUT	"\\_SB_.VALX.DSSX"
-#define GHCI_METHOD		".GHCI"
 
 /* Toshiba HCI interface definitions
  *
@@ -111,6 +106,25 @@ MODULE_LICENSE("GPL");
 #define HCI_WIRELESS_BT_ATTACH		0x40
 #define HCI_WIRELESS_BT_POWER		0x80
 
+struct toshiba_acpi_dev {
+	struct acpi_device *acpi_dev;
+	const char *method_hci;
+	struct rfkill *bt_rfk;
+	struct input_dev *hotkey_dev;
+	struct backlight_device *backlight_dev;
+	struct led_classdev led_dev;
+
+	int force_fan;
+	int last_key_event;
+	int key_event_valid;
+
+	int illumination_supported:1;
+	int video_supported:1;
+	int fan_supported:1;
+
+	struct mutex mutex;
+};
+
 static const struct acpi_device_id toshiba_device_ids[] = {
 	{"TOS6200", 0},
 	{"TOS6208", 0},
@@ -119,7 +133,7 @@ static const struct acpi_device_id toshiba_device_ids[] = {
 };
 MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
 
-static const struct key_entry toshiba_acpi_keymap[] __initconst = {
+static const struct key_entry toshiba_acpi_keymap[] __devinitconst = {
 	{ KE_KEY, 0x101, { KEY_MUTE } },
 	{ KE_KEY, 0x102, { KEY_ZOOMOUT } },
 	{ KE_KEY, 0x103, { KEY_ZOOMIN } },
@@ -155,15 +169,6 @@ static __inline__ void _set_bit(u32 * word, u32 mask, int value)
 /* acpi interface wrappers
  */
 
-static int is_valid_acpi_path(const char *methodName)
-{
-	acpi_handle handle;
-	acpi_status status;
-
-	status = acpi_get_handle(NULL, (char *)methodName, &handle);
-	return !ACPI_FAILURE(status);
-}
-
 static int write_acpi_int(const char *methodName, int val)
 {
 	struct acpi_object_list params;
@@ -176,32 +181,14 @@ static int write_acpi_int(const char *methodName, int val)
 	in_objs[0].integer.value = val;
 
 	status = acpi_evaluate_object(NULL, (char *)methodName, &params, NULL);
-	return (status == AE_OK);
-}
-
-#if 0
-static int read_acpi_int(const char *methodName, int *pVal)
-{
-	struct acpi_buffer results;
-	union acpi_object out_objs[1];
-	acpi_status status;
-
-	results.length = sizeof(out_objs);
-	results.pointer = out_objs;
-
-	status = acpi_evaluate_object(0, (char *)methodName, 0, &results);
-	*pVal = out_objs[0].integer.value;
-
-	return (status == AE_OK) && (out_objs[0].type == ACPI_TYPE_INTEGER);
+	return (status == AE_OK) ? 0 : -EIO;
 }
-#endif
-
-static const char *method_hci /*= 0*/ ;
 
 /* Perform a raw HCI call.  Here we don't care about input or output buffer
  * format.
  */
-static acpi_status hci_raw(const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
+static acpi_status hci_raw(struct toshiba_acpi_dev *dev,
+			   const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
 {
 	struct acpi_object_list params;
 	union acpi_object in_objs[HCI_WORDS];
@@ -220,7 +207,8 @@ static acpi_status hci_raw(const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
 	results.length = sizeof(out_objs);
 	results.pointer = out_objs;
 
-	status = acpi_evaluate_object(NULL, (char *)method_hci, &params,
+	status = acpi_evaluate_object(dev->acpi_dev->handle,
+				      (char *)dev->method_hci, &params,
 				      &results);
 	if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) {
 		for (i = 0; i < out_objs->package.count; ++i) {
@@ -237,85 +225,79 @@ static acpi_status hci_raw(const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
  * may be useful (such as "not supported").
  */
 
-static acpi_status hci_write1(u32 reg, u32 in1, u32 * result)
+static acpi_status hci_write1(struct toshiba_acpi_dev *dev, u32 reg,
+			      u32 in1, u32 *result)
 {
 	u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
 	u32 out[HCI_WORDS];
-	acpi_status status = hci_raw(in, out);
+	acpi_status status = hci_raw(dev, in, out);
 	*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
 	return status;
 }
 
-static acpi_status hci_read1(u32 reg, u32 * out1, u32 * result)
+static acpi_status hci_read1(struct toshiba_acpi_dev *dev, u32 reg,
+			     u32 *out1, u32 *result)
 {
 	u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
 	u32 out[HCI_WORDS];
-	acpi_status status = hci_raw(in, out);
+	acpi_status status = hci_raw(dev, in, out);
 	*out1 = out[2];
 	*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
 	return status;
 }
 
-static acpi_status hci_write2(u32 reg, u32 in1, u32 in2, u32 *result)
+static acpi_status hci_write2(struct toshiba_acpi_dev *dev, u32 reg,
+			      u32 in1, u32 in2, u32 *result)
 {
 	u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
 	u32 out[HCI_WORDS];
-	acpi_status status = hci_raw(in, out);
+	acpi_status status = hci_raw(dev, in, out);
 	*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
 	return status;
 }
 
-static acpi_status hci_read2(u32 reg, u32 *out1, u32 *out2, u32 *result)
+static acpi_status hci_read2(struct toshiba_acpi_dev *dev, u32 reg,
+			     u32 *out1, u32 *out2, u32 *result)
 {
 	u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
 	u32 out[HCI_WORDS];
-	acpi_status status = hci_raw(in, out);
+	acpi_status status = hci_raw(dev, in, out);
 	*out1 = out[2];
 	*out2 = out[3];
 	*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
 	return status;
 }
 
-struct toshiba_acpi_dev {
-	struct platform_device *p_dev;
-	struct rfkill *bt_rfk;
-	struct input_dev *hotkey_dev;
-	int illumination_installed;
-	acpi_handle handle;
-
-	const char *bt_name;
-
-	struct mutex mutex;
-};
-
 /* Illumination support */
-static int toshiba_illumination_available(void)
+static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
 {
 	u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
 	u32 out[HCI_WORDS];
 	acpi_status status;
 
 	in[0] = 0xf100;
-	status = hci_raw(in, out);
+	status = hci_raw(dev, in, out);
 	if (ACPI_FAILURE(status)) {
 		pr_info("Illumination device not available\n");
 		return 0;
 	}
 	in[0] = 0xf400;
-	status = hci_raw(in, out);
+	status = hci_raw(dev, in, out);
 	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 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
 	u32 out[HCI_WORDS];
 	acpi_status status;
 
 	/* First request : initialize communication. */
 	in[0] = 0xf100;
-	status = hci_raw(in, out);
+	status = hci_raw(dev, in, out);
 	if (ACPI_FAILURE(status)) {
 		pr_info("Illumination device not available\n");
 		return;
@@ -326,7 +308,7 @@ static void toshiba_illumination_set(struct led_classdev *cdev,
 		in[0] = 0xf400;
 		in[1] = 0x14e;
 		in[2] = 1;
-		status = hci_raw(in, out);
+		status = hci_raw(dev, in, out);
 		if (ACPI_FAILURE(status)) {
 			pr_info("ACPI call for illumination failed\n");
 			return;
@@ -336,7 +318,7 @@ static void toshiba_illumination_set(struct led_classdev *cdev,
 		in[0] = 0xf400;
 		in[1] = 0x14e;
 		in[2] = 0;
-		status = hci_raw(in, out);
+		status = hci_raw(dev, in, out);
 		if (ACPI_FAILURE(status)) {
 			pr_info("ACPI call for illumination failed.\n");
 			return;
@@ -347,11 +329,13 @@ static void toshiba_illumination_set(struct led_classdev *cdev,
 	in[0] = 0xf200;
 	in[1] = 0;
 	in[2] = 0;
-	hci_raw(in, out);
+	hci_raw(dev, in, out);
 }
 
 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 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
 	u32 out[HCI_WORDS];
 	acpi_status status;
@@ -359,7 +343,7 @@ static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
 
 	/* First request : initialize communication. */
 	in[0] = 0xf100;
-	status = hci_raw(in, out);
+	status = hci_raw(dev, in, out);
 	if (ACPI_FAILURE(status)) {
 		pr_info("Illumination device not available\n");
 		return LED_OFF;
@@ -368,7 +352,7 @@ static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
 	/* Check the illumination */
 	in[0] = 0xf300;
 	in[1] = 0x14e;
-	status = hci_raw(in, out);
+	status = hci_raw(dev, in, out);
 	if (ACPI_FAILURE(status)) {
 		pr_info("ACPI call for illumination failed.\n");
 		return LED_OFF;
@@ -380,46 +364,35 @@ static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
 	in[0] = 0xf200;
 	in[1] = 0;
 	in[2] = 0;
-	hci_raw(in, out);
+	hci_raw(dev, in, out);
 
 	return result;
 }
 
-static struct led_classdev toshiba_led = {
-	.name           = "toshiba::illumination",
-	.max_brightness = 1,
-	.brightness_set = toshiba_illumination_set,
-	.brightness_get = toshiba_illumination_get,
-};
-
-static struct toshiba_acpi_dev toshiba_acpi = {
-	.bt_name = "Toshiba Bluetooth",
-};
-
 /* Bluetooth rfkill handlers */
 
-static u32 hci_get_bt_present(bool *present)
+static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
 {
 	u32 hci_result;
 	u32 value, value2;
 
 	value = 0;
 	value2 = 0;
-	hci_read2(HCI_WIRELESS, &value, &value2, &hci_result);
+	hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
 	if (hci_result == HCI_SUCCESS)
 		*present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
 
 	return hci_result;
 }
 
-static u32 hci_get_radio_state(bool *radio_state)
+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_read2(HCI_WIRELESS, &value, &value2, &hci_result);
+	hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
 
 	*radio_state = value & HCI_WIRELESS_KILL_SWITCH;
 	return hci_result;
@@ -436,8 +409,8 @@ static int bt_rfkill_set_block(void *data, bool blocked)
 	value = (blocked == false);
 
 	mutex_lock(&dev->mutex);
-	if (hci_get_radio_state(&radio_state) != HCI_SUCCESS) {
-		err = -EBUSY;
+	if (hci_get_radio_state(dev, &radio_state) != HCI_SUCCESS) {
+		err = -EIO;
 		goto out;
 	}
 
@@ -446,11 +419,11 @@ static int bt_rfkill_set_block(void *data, bool blocked)
 		goto out;
 	}
 
-	hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
-	hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
+	hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
+	hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
 
 	if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
-		err = -EBUSY;
+		err = -EIO;
 	else
 		err = 0;
  out:
@@ -467,7 +440,7 @@ static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
 
 	mutex_lock(&dev->mutex);
 
-	hci_result = hci_get_radio_state(&value);
+	hci_result = hci_get_radio_state(dev, &value);
 	if (hci_result != HCI_SUCCESS) {
 		/* Can't do anything useful */
 		mutex_unlock(&dev->mutex);
@@ -488,63 +461,64 @@ static const struct rfkill_ops toshiba_rfk_ops = {
 };
 
 static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
-static struct backlight_device *toshiba_backlight_device;
-static int force_fan;
-static int last_key_event;
-static int key_event_valid;
 
 static int get_lcd(struct backlight_device *bd)
 {
+	struct toshiba_acpi_dev *dev = bl_get_data(bd);
 	u32 hci_result;
 	u32 value;
 
-	hci_read1(HCI_LCD_BRIGHTNESS, &value, &hci_result);
-	if (hci_result == HCI_SUCCESS) {
+	hci_read1(dev, HCI_LCD_BRIGHTNESS, &value, &hci_result);
+	if (hci_result == HCI_SUCCESS)
 		return (value >> HCI_LCD_BRIGHTNESS_SHIFT);
-	} else
-		return -EFAULT;
+
+	return -EIO;
 }
 
 static int lcd_proc_show(struct seq_file *m, void *v)
 {
-	int value = get_lcd(NULL);
+	struct toshiba_acpi_dev *dev = m->private;
+	int value;
+
+	if (!dev->backlight_dev)
+		return -ENODEV;
 
+	value = get_lcd(dev->backlight_dev);
 	if (value >= 0) {
 		seq_printf(m, "brightness:              %d\n", value);
 		seq_printf(m, "brightness_levels:       %d\n",
 			     HCI_LCD_BRIGHTNESS_LEVELS);
-	} else {
-		pr_err("Error reading LCD brightness\n");
+		return 0;
 	}
 
-	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, NULL);
+	return single_open(file, lcd_proc_show, PDE(inode)->data);
 }
 
-static int set_lcd(int value)
+static int set_lcd(struct toshiba_acpi_dev *dev, int value)
 {
 	u32 hci_result;
 
 	value = value << HCI_LCD_BRIGHTNESS_SHIFT;
-	hci_write1(HCI_LCD_BRIGHTNESS, value, &hci_result);
-	if (hci_result != HCI_SUCCESS)
-		return -EFAULT;
-
-	return 0;
+	hci_write1(dev, HCI_LCD_BRIGHTNESS, value, &hci_result);
+	return hci_result == HCI_SUCCESS ? 0 : -EIO;
 }
 
 static int set_lcd_status(struct backlight_device *bd)
 {
-	return set_lcd(bd->props.brightness);
+	struct toshiba_acpi_dev *dev = bl_get_data(bd);
+	return set_lcd(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(file->f_path.dentry->d_inode)->data;
 	char cmd[42];
 	size_t len;
 	int value;
@@ -557,7 +531,7 @@ static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
 
 	if (sscanf(cmd, " brightness : %i", &value) == 1 &&
 	    value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS) {
-		ret = set_lcd(value);
+		ret = set_lcd(dev, value);
 		if (ret == 0)
 			ret = count;
 	} else {
@@ -575,41 +549,49 @@ static const struct file_operations lcd_proc_fops = {
 	.write		= lcd_proc_write,
 };
 
-static int video_proc_show(struct seq_file *m, void *v)
+static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
 {
 	u32 hci_result;
+
+	hci_read1(dev, HCI_VIDEO_OUT, status, &hci_result);
+	return hci_result == HCI_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;
 
-	hci_read1(HCI_VIDEO_OUT, &value, &hci_result);
-	if (hci_result == HCI_SUCCESS) {
+	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);
-	} else {
-		pr_err("Error reading video out status\n");
 	}
 
-	return 0;
+	return ret;
 }
 
 static int video_proc_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, video_proc_show, NULL);
+	return single_open(file, video_proc_show, PDE(inode)->data);
 }
 
 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(file->f_path.dentry->d_inode)->data;
 	char *cmd, *buffer;
+	int ret;
 	int value;
 	int remain = count;
 	int lcd_out = -1;
 	int crt_out = -1;
 	int tv_out = -1;
-	u32 hci_result;
 	u32 video_out;
 
 	cmd = kmalloc(count + 1, GFP_KERNEL);
@@ -644,8 +626,8 @@ static ssize_t video_proc_write(struct file *file, const char __user *buf,
 
 	kfree(cmd);
 
-	hci_read1(HCI_VIDEO_OUT, &video_out, &hci_result);
-	if (hci_result == HCI_SUCCESS) {
+	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);
@@ -656,12 +638,10 @@ static ssize_t video_proc_write(struct file *file, const char __user *buf,
 		/* To avoid unnecessary video disruption, only write the new
 		 * video setting if something changed. */
 		if (new_video_out != video_out)
-			write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
-	} else {
-		return -EFAULT;
+			ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
 	}
 
-	return count;
+	return ret ? ret : count;
 }
 
 static const struct file_operations video_proc_fops = {
@@ -673,30 +653,38 @@ static const struct file_operations video_proc_fops = {
 	.write		= video_proc_write,
 };
 
-static int fan_proc_show(struct seq_file *m, void *v)
+static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
 {
 	u32 hci_result;
+
+	hci_read1(dev, HCI_FAN, status, &hci_result);
+	return hci_result == HCI_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;
 
-	hci_read1(HCI_FAN, &value, &hci_result);
-	if (hci_result == HCI_SUCCESS) {
+	ret = get_fan_status(dev, &value);
+	if (!ret) {
 		seq_printf(m, "running:                 %d\n", (value > 0));
-		seq_printf(m, "force_on:                %d\n", force_fan);
-	} else {
-		pr_err("Error reading fan status\n");
+		seq_printf(m, "force_on:                %d\n", dev->force_fan);
 	}
 
-	return 0;
+	return ret;
 }
 
 static int fan_proc_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, fan_proc_show, NULL);
+	return single_open(file, fan_proc_show, PDE(inode)->data);
 }
 
 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(file->f_path.dentry->d_inode)->data;
 	char cmd[42];
 	size_t len;
 	int value;
@@ -709,11 +697,11 @@ static ssize_t fan_proc_write(struct file *file, const char __user *buf,
 
 	if (sscanf(cmd, " force_on : %i", &value) == 1 &&
 	    value >= 0 && value <= 1) {
-		hci_write1(HCI_FAN, value, &hci_result);
+		hci_write1(dev, HCI_FAN, value, &hci_result);
 		if (hci_result != HCI_SUCCESS)
-			return -EFAULT;
+			return -EIO;
 		else
-			force_fan = value;
+			dev->force_fan = value;
 	} else {
 		return -EINVAL;
 	}
@@ -732,42 +720,43 @@ static const struct file_operations fan_proc_fops = {
 
 static int keys_proc_show(struct seq_file *m, void *v)
 {
+	struct toshiba_acpi_dev *dev = m->private;
 	u32 hci_result;
 	u32 value;
 
-	if (!key_event_valid) {
-		hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result);
+	if (!dev->key_event_valid) {
+		hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
 		if (hci_result == HCI_SUCCESS) {
-			key_event_valid = 1;
-			last_key_event = value;
+			dev->key_event_valid = 1;
+			dev->last_key_event = value;
 		} else if (hci_result == HCI_EMPTY) {
 			/* better luck next time */
 		} else if (hci_result == HCI_NOT_SUPPORTED) {
 			/* This is a workaround for an unresolved issue on
 			 * some machines where system events sporadically
 			 * become disabled. */
-			hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
+			hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
 			pr_notice("Re-enabled hotkeys\n");
 		} else {
 			pr_err("Error reading hotkey status\n");
-			goto end;
+			return -EIO;
 		}
 	}
 
-	seq_printf(m, "hotkey_ready:            %d\n", key_event_valid);
-	seq_printf(m, "hotkey:                  0x%04x\n", last_key_event);
-end:
+	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, NULL);
+	return single_open(file, keys_proc_show, PDE(inode)->data);
 }
 
 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(file->f_path.dentry->d_inode)->data;
 	char cmd[42];
 	size_t len;
 	int value;
@@ -778,7 +767,7 @@ static ssize_t keys_proc_write(struct file *file, const char __user *buf,
 	cmd[len] = '\0';
 
 	if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) {
-		key_event_valid = 0;
+		dev->key_event_valid = 0;
 	} else {
 		return -EINVAL;
 	}
@@ -820,21 +809,35 @@ static const struct file_operations version_proc_fops = {
 
 #define PROC_TOSHIBA		"toshiba"
 
-static void __init create_toshiba_proc_entries(void)
+static void __devinit
+create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
 {
-	proc_create("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir, &lcd_proc_fops);
-	proc_create("video", S_IRUGO | S_IWUSR, toshiba_proc_dir, &video_proc_fops);
-	proc_create("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir, &fan_proc_fops);
-	proc_create("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir, &keys_proc_fops);
-	proc_create("version", S_IRUGO, toshiba_proc_dir, &version_proc_fops);
+	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(void)
+static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
 {
-	remove_proc_entry("lcd", toshiba_proc_dir);
-	remove_proc_entry("video", toshiba_proc_dir);
-	remove_proc_entry("fan", toshiba_proc_dir);
-	remove_proc_entry("keys", toshiba_proc_dir);
+	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);
 }
 
@@ -843,224 +846,256 @@ static const struct backlight_ops toshiba_backlight_data = {
         .update_status  = set_lcd_status,
 };
 
-static void toshiba_acpi_notify(acpi_handle handle, u32 event, void *context)
-{
-	u32 hci_result, value;
-
-	if (event != 0x80)
-		return;
-	do {
-		hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result);
-		if (hci_result == HCI_SUCCESS) {
-			if (value == 0x100)
-				continue;
-			/* act on key press; ignore key release */
-			if (value & 0x80)
-				continue;
-
-			if (!sparse_keymap_report_event(toshiba_acpi.hotkey_dev,
-							value, 1, true)) {
-				pr_info("Unknown key %x\n",
-				       value);
-			}
-		} else if (hci_result == HCI_NOT_SUPPORTED) {
-			/* This is a workaround for an unresolved issue on
-			 * some machines where system events sporadically
-			 * become disabled. */
-			hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
-			pr_notice("Re-enabled hotkeys\n");
-		}
-	} while (hci_result != HCI_EMPTY);
-}
-
-static int __init toshiba_acpi_setup_keyboard(char *device)
+static int __devinit toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
 {
 	acpi_status status;
 	int error;
 
-	status = acpi_get_handle(NULL, device, &toshiba_acpi.handle);
-	if (ACPI_FAILURE(status)) {
-		pr_info("Unable to get notification device\n");
-		return -ENODEV;
-	}
-
-	toshiba_acpi.hotkey_dev = input_allocate_device();
-	if (!toshiba_acpi.hotkey_dev) {
+	dev->hotkey_dev = input_allocate_device();
+	if (!dev->hotkey_dev) {
 		pr_info("Unable to register input device\n");
 		return -ENOMEM;
 	}
 
-	toshiba_acpi.hotkey_dev->name = "Toshiba input device";
-	toshiba_acpi.hotkey_dev->phys = device;
-	toshiba_acpi.hotkey_dev->id.bustype = BUS_HOST;
+	dev->hotkey_dev->name = "Toshiba input device";
+	dev->hotkey_dev->phys = "toshiba_acpi/input0";
+	dev->hotkey_dev->id.bustype = BUS_HOST;
 
-	error = sparse_keymap_setup(toshiba_acpi.hotkey_dev,
-				    toshiba_acpi_keymap, NULL);
+	error = sparse_keymap_setup(dev->hotkey_dev, toshiba_acpi_keymap, NULL);
 	if (error)
 		goto err_free_dev;
 
-	status = acpi_install_notify_handler(toshiba_acpi.handle,
-				ACPI_DEVICE_NOTIFY, toshiba_acpi_notify, NULL);
-	if (ACPI_FAILURE(status)) {
-		pr_info("Unable to install hotkey notification\n");
-		error = -ENODEV;
-		goto err_free_keymap;
-	}
-
-	status = acpi_evaluate_object(toshiba_acpi.handle, "ENAB", NULL, NULL);
+	status = acpi_evaluate_object(dev->acpi_dev->handle, "ENAB", NULL, NULL);
 	if (ACPI_FAILURE(status)) {
 		pr_info("Unable to enable hotkeys\n");
 		error = -ENODEV;
-		goto err_remove_notify;
+		goto err_free_keymap;
 	}
 
-	error = input_register_device(toshiba_acpi.hotkey_dev);
+	error = input_register_device(dev->hotkey_dev);
 	if (error) {
 		pr_info("Unable to register input device\n");
-		goto err_remove_notify;
+		goto err_free_keymap;
 	}
 
 	return 0;
 
- err_remove_notify:
-	acpi_remove_notify_handler(toshiba_acpi.handle,
-				   ACPI_DEVICE_NOTIFY, toshiba_acpi_notify);
  err_free_keymap:
-	sparse_keymap_free(toshiba_acpi.hotkey_dev);
+	sparse_keymap_free(dev->hotkey_dev);
  err_free_dev:
-	input_free_device(toshiba_acpi.hotkey_dev);
-	toshiba_acpi.hotkey_dev = NULL;
+	input_free_device(dev->hotkey_dev);
+	dev->hotkey_dev = NULL;
 	return error;
 }
 
-static void toshiba_acpi_exit(void)
+static int toshiba_acpi_remove(struct acpi_device *acpi_dev, int type)
 {
-	if (toshiba_acpi.hotkey_dev) {
-		acpi_remove_notify_handler(toshiba_acpi.handle,
-				ACPI_DEVICE_NOTIFY, toshiba_acpi_notify);
-		sparse_keymap_free(toshiba_acpi.hotkey_dev);
-		input_unregister_device(toshiba_acpi.hotkey_dev);
+	struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
+
+	remove_toshiba_proc_entries(dev);
+
+	if (dev->hotkey_dev) {
+		input_unregister_device(dev->hotkey_dev);
+		sparse_keymap_free(dev->hotkey_dev);
 	}
 
-	if (toshiba_acpi.bt_rfk) {
-		rfkill_unregister(toshiba_acpi.bt_rfk);
-		rfkill_destroy(toshiba_acpi.bt_rfk);
+	if (dev->bt_rfk) {
+		rfkill_unregister(dev->bt_rfk);
+		rfkill_destroy(dev->bt_rfk);
 	}
 
-	if (toshiba_backlight_device)
-		backlight_device_unregister(toshiba_backlight_device);
+	if (dev->backlight_dev)
+		backlight_device_unregister(dev->backlight_dev);
 
-	remove_toshiba_proc_entries();
+	if (dev->illumination_supported)
+		led_classdev_unregister(&dev->led_dev);
 
-	if (toshiba_proc_dir)
-		remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
+	kfree(dev);
+
+	return 0;
+}
+
+static const char * __devinit find_hci_method(acpi_handle handle)
+{
+	acpi_status status;
+	acpi_handle hci_handle;
 
-	if (toshiba_acpi.illumination_installed)
-		led_classdev_unregister(&toshiba_led);
+	status = acpi_get_handle(handle, "GHCI", &hci_handle);
+	if (ACPI_SUCCESS(status))
+		return "GHCI";
 
-	platform_device_unregister(toshiba_acpi.p_dev);
+	status = acpi_get_handle(handle, "SPFC", &hci_handle);
+	if (ACPI_SUCCESS(status))
+		return "SPFC";
 
-	return;
+	return NULL;
 }
 
-static int __init toshiba_acpi_init(void)
+static int __devinit toshiba_acpi_add(struct acpi_device *acpi_dev)
 {
+	struct toshiba_acpi_dev *dev;
+	const char *hci_method;
 	u32 hci_result;
+	u32 dummy;
 	bool bt_present;
 	int ret = 0;
 	struct backlight_properties props;
 
-	if (acpi_disabled)
-		return -ENODEV;
-
-	/* simple device detection: look for HCI method */
-	if (is_valid_acpi_path(TOSH_INTERFACE_1 GHCI_METHOD)) {
-		method_hci = TOSH_INTERFACE_1 GHCI_METHOD;
-		if (toshiba_acpi_setup_keyboard(TOSH_INTERFACE_1))
-			pr_info("Unable to activate hotkeys\n");
-	} else if (is_valid_acpi_path(TOSH_INTERFACE_2 GHCI_METHOD)) {
-		method_hci = TOSH_INTERFACE_2 GHCI_METHOD;
-		if (toshiba_acpi_setup_keyboard(TOSH_INTERFACE_2))
-			pr_info("Unable to activate hotkeys\n");
-	} else
-		return -ENODEV;
-
 	pr_info("Toshiba Laptop ACPI Extras version %s\n",
 	       TOSHIBA_ACPI_VERSION);
-	pr_info("    HCI method: %s\n", method_hci);
-
-	mutex_init(&toshiba_acpi.mutex);
-
-	toshiba_acpi.p_dev = platform_device_register_simple("toshiba_acpi",
-							      -1, NULL, 0);
-	if (IS_ERR(toshiba_acpi.p_dev)) {
-		ret = PTR_ERR(toshiba_acpi.p_dev);
-		pr_err("unable to register platform device\n");
-		toshiba_acpi.p_dev = NULL;
-		toshiba_acpi_exit();
-		return ret;
+
+	hci_method = find_hci_method(acpi_dev->handle);
+	if (!hci_method) {
+		pr_err("HCI interface not found\n");
+		return -ENODEV;
 	}
 
-	force_fan = 0;
-	key_event_valid = 0;
+	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;
 
-	/* enable event fifo */
-	hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
+	if (toshiba_acpi_setup_keyboard(dev))
+		pr_info("Unable to activate hotkeys\n");
 
-	toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
-	if (!toshiba_proc_dir) {
-		toshiba_acpi_exit();
-		return -ENODEV;
-	} else {
-		create_toshiba_proc_entries();
-	}
+	mutex_init(&dev->mutex);
+
+	/* enable event fifo */
+	hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
 
 	props.type = BACKLIGHT_PLATFORM;
 	props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
-	toshiba_backlight_device = backlight_device_register("toshiba",
-							     &toshiba_acpi.p_dev->dev,
-							     NULL,
-							     &toshiba_backlight_data,
-							     &props);
-        if (IS_ERR(toshiba_backlight_device)) {
-		ret = PTR_ERR(toshiba_backlight_device);
+	dev->backlight_dev = backlight_device_register("toshiba",
+						       &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");
-		toshiba_backlight_device = NULL;
-		toshiba_acpi_exit();
-		return ret;
+		dev->backlight_dev = NULL;
+		goto error;
 	}
+	dev->backlight_dev->props.brightness = get_lcd(dev->backlight_dev);
 
 	/* Register rfkill switch for Bluetooth */
-	if (hci_get_bt_present(&bt_present) == HCI_SUCCESS && bt_present) {
-		toshiba_acpi.bt_rfk = rfkill_alloc(toshiba_acpi.bt_name,
-						   &toshiba_acpi.p_dev->dev,
-						   RFKILL_TYPE_BLUETOOTH,
-						   &toshiba_rfk_ops,
-						   &toshiba_acpi);
-		if (!toshiba_acpi.bt_rfk) {
+	if (hci_get_bt_present(dev, &bt_present) == HCI_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");
-			toshiba_acpi_exit();
-			return -ENOMEM;
+			ret = -ENOMEM;
+			goto error;
 		}
 
-		ret = rfkill_register(toshiba_acpi.bt_rfk);
+		ret = rfkill_register(dev->bt_rfk);
 		if (ret) {
 			pr_err("unable to register rfkill device\n");
-			rfkill_destroy(toshiba_acpi.bt_rfk);
-			toshiba_acpi_exit();
-			return ret;
+			rfkill_destroy(dev->bt_rfk);
+			goto error;
 		}
 	}
 
-	toshiba_acpi.illumination_installed = 0;
-	if (toshiba_illumination_available()) {
-		if (!led_classdev_register(&(toshiba_acpi.p_dev->dev),
-					   &toshiba_led))
-			toshiba_acpi.illumination_installed = 1;
+	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;
 	}
 
+	/* 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;
+
+	create_toshiba_proc_entries(dev);
+
 	return 0;
+
+error:
+	toshiba_acpi_remove(acpi_dev, 0);
+	return ret;
+}
+
+static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
+{
+	struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
+	u32 hci_result, value;
+
+	if (event != 0x80)
+		return;
+	do {
+		hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
+		if (hci_result == HCI_SUCCESS) {
+			if (value == 0x100)
+				continue;
+			/* act on key press; ignore key release */
+			if (value & 0x80)
+				continue;
+
+			if (!sparse_keymap_report_event(dev->hotkey_dev,
+							value, 1, true)) {
+				pr_info("Unknown key %x\n",
+				       value);
+			}
+		} else if (hci_result == HCI_NOT_SUPPORTED) {
+			/* This is a workaround for an unresolved issue on
+			 * some machines where system events sporadically
+			 * become disabled. */
+			hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
+			pr_notice("Re-enabled hotkeys\n");
+		}
+	} while (hci_result != HCI_EMPTY);
+}
+
+
+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,
+	},
+};
+
+static int __init toshiba_acpi_init(void)
+{
+	int ret;
+
+	toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
+	if (!toshiba_proc_dir) {
+		pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
+		return -ENODEV;
+	}
+
+	ret = acpi_bus_register_driver(&toshiba_acpi_driver);
+	if (ret) {
+		pr_err("Failed to register ACPI driver: %d\n", ret);
+		remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
+	}
+
+	return ret;
+}
+
+static void __exit toshiba_acpi_exit(void)
+{
+	acpi_bus_unregister_driver(&toshiba_acpi_driver);
+	if (toshiba_proc_dir)
+		remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
 }
 
 module_init(toshiba_acpi_init);
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index f23d5a84e7b..9b88be42b6c 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -754,9 +754,13 @@ static void wmi_free_devices(void)
 	struct wmi_block *wblock, *next;
 
 	/* Delete devices for all the GUIDs */
-	list_for_each_entry_safe(wblock, next, &wmi_block_list, list)
+	list_for_each_entry_safe(wblock, next, &wmi_block_list, list) {
+		list_del(&wblock->list);
 		if (wblock->dev.class)
 			device_unregister(&wblock->dev);
+		else
+			kfree(wblock);
+	}
 }
 
 static bool guid_already_parsed(const char *guid_string)