Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (23 commits)
  ACPI PCI hotplug: harden against panic regression
  ACPI: rename main.c to sleep.c
  dell-laptop: move to drivers/platform/x86/ from drivers/misc/
  eeepc-laptop: enable Bluetooth ACPI details
  ACPI: fix ACPI_FADT_S4_RTC_WAKE comment
  kprobes: check CONFIG_FREEZER instead of CONFIG_PM
  PM: Fix freezer compilation if PM_SLEEP is unset
  thermal fixup for broken BIOS which has invalid trip points.
  ACPI: EC: Don't trust ECDT tables from ASUS
  ACPI: EC: Limit workaround for ASUS notebooks even more
  ACPI: thinkpad-acpi: bump up version to 0.22
  ACPI: thinkpad-acpi: handle HKEY event 6030
  ACPI: thinkpad-acpi: clean-up fan subdriver quirk
  ACPI: thinkpad-acpi: start the event hunt season
  ACPI: thinkpad-acpi: handle HKEY thermal and battery alarms
  ACPI: thinkpad-acpi: clean up hotkey_notify()
  ACPI: thinkpad-acpi: use killable instead of interruptible mutexes
  ACPI: thinkpad-acpi: add UWB radio support
  ACPI: thinkpad-acpi: preserve radio state across shutdown
  ACPI: thinkpad-acpi: resume with radios disabled
  ...

11 files changed, 830 insertions, 204 deletions

diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index d80f4cc2e0d..65d90c720b5 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -19,7 +19,7 @@ obj-y				+= osl.o utils.o reboot.o\
 
 # sleep related files
 obj-y				+= wakeup.o
-obj-y				+= main.o
+obj-y				+= sleep.o
 obj-$(CONFIG_ACPI_SLEEP)	+= proc.o
 
 
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 8dfcbb8aff7..a2b82c90a68 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -120,31 +120,6 @@ static struct acpi_ec {
 	spinlock_t curr_lock;
 } *boot_ec, *first_ec;
 
-/* 
- * Some Asus system have exchanged ECDT data/command IO addresses.
- */
-static int print_ecdt_error(const struct dmi_system_id *id)
-{
-	printk(KERN_NOTICE PREFIX "%s detected - "
-		"ECDT has exchanged control/data I/O address\n",
-		id->ident);
-	return 0;
-}
-
-static struct dmi_system_id __cpuinitdata ec_dmi_table[] = {
-	{
-	print_ecdt_error, "Asus L4R", {
-	DMI_MATCH(DMI_BIOS_VERSION, "1008.006"),
-	DMI_MATCH(DMI_PRODUCT_NAME, "L4R"),
-	DMI_MATCH(DMI_BOARD_NAME, "L4R") }, NULL},
-	{
-	print_ecdt_error, "Asus M6R", {
-	DMI_MATCH(DMI_BIOS_VERSION, "0207"),
-	DMI_MATCH(DMI_PRODUCT_NAME, "M6R"),
-	DMI_MATCH(DMI_BOARD_NAME, "M6R") }, NULL},
-	{},
-};
-
 /* --------------------------------------------------------------------------
                              Transaction Management
    -------------------------------------------------------------------------- */
@@ -983,8 +958,8 @@ static const struct acpi_device_id ec_device_ids[] = {
 int __init acpi_ec_ecdt_probe(void)
 {
 	acpi_status status;
+	struct acpi_ec *saved_ec = NULL;
 	struct acpi_table_ecdt *ecdt_ptr;
-	acpi_handle dummy;
 
 	boot_ec = make_acpi_ec();
 	if (!boot_ec)
@@ -998,21 +973,16 @@ int __init acpi_ec_ecdt_probe(void)
 		pr_info(PREFIX "EC description table is found, configuring boot EC\n");
 		boot_ec->command_addr = ecdt_ptr->control.address;
 		boot_ec->data_addr = ecdt_ptr->data.address;
-		if (dmi_check_system(ec_dmi_table)) {
-			/*
-			 * If the board falls into ec_dmi_table, it means
-			 * that ECDT table gives the incorrect command/status
-			 * & data I/O address. Just fix it.
-			 */
-			boot_ec->data_addr = ecdt_ptr->control.address;
-			boot_ec->command_addr = ecdt_ptr->data.address;
-		}
 		boot_ec->gpe = ecdt_ptr->gpe;
 		boot_ec->handle = ACPI_ROOT_OBJECT;
 		acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id, &boot_ec->handle);
-		/* Add some basic check against completely broken table */
-		if (boot_ec->data_addr != boot_ec->command_addr)
+		/* Don't trust ECDT, which comes from ASUSTek */
+		if (!dmi_name_in_vendors("ASUS"))
 			goto install;
+		saved_ec = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
+		if (!saved_ec)
+			return -ENOMEM;
+		memcpy(&saved_ec, boot_ec, sizeof(saved_ec));
 	/* fall through */
 	}
 	/* This workaround is needed only on some broken machines,
@@ -1023,12 +993,29 @@ int __init acpi_ec_ecdt_probe(void)
 	/* Check that acpi_get_devices actually find something */
 	if (ACPI_FAILURE(status) || !boot_ec->handle)
 		goto error;
-	/* We really need to limit this workaround, the only ASUS,
-	 * which needs it, has fake EC._INI method, so use it as flag.
-	 * Keep boot_ec struct as it will be needed soon.
-	 */
-	if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &dummy)))
-		return -ENODEV;
+	if (saved_ec) {
+		/* try to find good ECDT from ASUSTek */
+		if (saved_ec->command_addr != boot_ec->command_addr ||
+		    saved_ec->data_addr != boot_ec->data_addr ||
+		    saved_ec->gpe != boot_ec->gpe ||
+		    saved_ec->handle != boot_ec->handle)
+			pr_info(PREFIX "ASUSTek keeps feeding us with broken "
+			"ECDT tables, which are very hard to workaround. "
+			"Trying to use DSDT EC info instead. Please send "
+			"output of acpidump to linux-acpi@vger.kernel.org\n");
+		kfree(saved_ec);
+		saved_ec = NULL;
+	} else {
+		/* We really need to limit this workaround, the only ASUS,
+		* which needs it, has fake EC._INI method, so use it as flag.
+		* Keep boot_ec struct as it will be needed soon.
+		*/
+		acpi_handle dummy;
+		if (!dmi_name_in_vendors("ASUS") ||
+		    ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI",
+							&dummy)))
+			return -ENODEV;
+	}
 install:
 	if (!ec_install_handlers(boot_ec)) {
 		first_ec = boot_ec;
diff --git a/drivers/acpi/main.c b/drivers/acpi/sleep.c
index 7e3c609cbef..7e3c609cbef 100644
--- a/drivers/acpi/main.c
+++ b/drivers/acpi/sleep.c
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 073ff09218a..99e6f1f8ea4 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -416,7 +416,8 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
 	}
 
 	/* Passive (optional) */
-	if (flag & ACPI_TRIPS_PASSIVE) {
+	if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips.passive.flags.valid) ||
+		(flag == ACPI_TRIPS_INIT)) {
 		valid = tz->trips.passive.flags.valid;
 		if (psv == -1) {
 			status = AE_SUPPORT;
@@ -462,8 +463,11 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
 		memset(&devices, 0, sizeof(struct acpi_handle_list));
 		status = acpi_evaluate_reference(tz->device->handle, "_PSL",
 							NULL, &devices);
-		if (ACPI_FAILURE(status))
+		if (ACPI_FAILURE(status)) {
+			printk(KERN_WARNING PREFIX
+				"Invalid passive threshold\n");
 			tz->trips.passive.flags.valid = 0;
+		}
 		else
 			tz->trips.passive.flags.valid = 1;
 
@@ -487,7 +491,8 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
 		if (act == -1)
 			break; /* disable all active trip points */
 
-		if (flag & ACPI_TRIPS_ACTIVE) {
+		if ((flag == ACPI_TRIPS_INIT) || ((flag & ACPI_TRIPS_ACTIVE) &&
+			tz->trips.active[i].flags.valid)) {
 			status = acpi_evaluate_integer(tz->device->handle,
 							name, NULL, &tmp);
 			if (ACPI_FAILURE(status)) {
@@ -521,8 +526,11 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
 			memset(&devices, 0, sizeof(struct acpi_handle_list));
 			status = acpi_evaluate_reference(tz->device->handle,
 						name, NULL, &devices);
-			if (ACPI_FAILURE(status))
+			if (ACPI_FAILURE(status)) {
+				printk(KERN_WARNING PREFIX
+					"Invalid active%d threshold\n", i);
 				tz->trips.active[i].flags.valid = 0;
+			}
 			else
 				tz->trips.active[i].flags.valid = 1;
 
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 9cf8ae6e4b3..d5749a7bc77 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -10,7 +10,6 @@ obj-$(CONFIG_ATMEL_TCLIB)	+= atmel_tclib.o
 obj-$(CONFIG_ICS932S401)	+= ics932s401.o
 obj-$(CONFIG_LKDTM)		+= lkdtm.o
 obj-$(CONFIG_TIFM_CORE)       	+= tifm_core.o
-obj-$(CONFIG_DELL_LAPTOP)	+= dell-laptop.o
 obj-$(CONFIG_TIFM_7XX1)       	+= tifm_7xx1.o
 obj-$(CONFIG_PHANTOM)		+= phantom.o
 obj-$(CONFIG_SGI_IOC4)		+= ioc4.o
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index f09b1010d47..803d9ddd6e7 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -266,6 +266,8 @@ static int detect_ejectable_slots(struct pci_bus *pbus)
 	int found = acpi_pci_detect_ejectable(pbus);
 	if (!found) {
 		acpi_handle bridge_handle = acpi_pci_get_bridge_handle(pbus);
+		if (!bridge_handle)
+			return 0;
 		acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge_handle, (u32)1,
 				    is_pci_dock_device, (void *)&found, NULL);
 	}
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index e65448e99b4..1a266d4ab5f 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -54,6 +54,18 @@ config ASUS_LAPTOP
 
 	  If you have an ACPI-compatible ASUS laptop, say Y or M here.
 
+config DELL_LAPTOP
+	tristate "Dell Laptop Extras (EXPERIMENTAL)"
+	depends on X86
+	depends on DCDBAS
+	depends on EXPERIMENTAL
+	depends on BACKLIGHT_CLASS_DEVICE
+	depends on RFKILL
+	default n
+	---help---
+	This driver adds support for rfkill and backlight control to Dell
+	laptops.
+
 config FUJITSU_LAPTOP
 	tristate "Fujitsu Laptop Extras"
 	depends on ACPI
@@ -192,6 +204,17 @@ config THINKPAD_ACPI
 
 	  If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
 
+config THINKPAD_ACPI_DEBUGFACILITIES
+	bool "Maintainer debug facilities"
+	depends on THINKPAD_ACPI
+	default n
+	---help---
+	  Enables extra stuff in the thinkpad-acpi which is completely useless
+	  for normal use.  Read the driver source to find out what it does.
+
+	  Say N here, unless you were told by a kernel maintainer to do
+	  otherwise.
+
 config THINKPAD_ACPI_DEBUG
 	bool "Verbose debug mode"
 	depends on THINKPAD_ACPI
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 1e9de2ae0de..e29065120be 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_ASUS_LAPTOP)	+= asus-laptop.o
 obj-$(CONFIG_EEEPC_LAPTOP)	+= eeepc-laptop.o
 obj-$(CONFIG_MSI_LAPTOP)	+= msi-laptop.o
 obj-$(CONFIG_COMPAL_LAPTOP)	+= compal-laptop.o
+obj-$(CONFIG_DELL_LAPTOP)	+= dell-laptop.o
 obj-$(CONFIG_ACER_WMI)		+= acer-wmi.o
 obj-$(CONFIG_HP_WMI)		+= hp-wmi.o
 obj-$(CONFIG_TC1100_WMI)	+= tc1100-wmi.o
diff --git a/drivers/misc/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index 4d33a2068b7..16e11c2ee19 100644
--- a/drivers/misc/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -22,7 +22,7 @@
 #include <linux/rfkill.h>
 #include <linux/power_supply.h>
 #include <linux/acpi.h>
-#include "../firmware/dcdbas.h"
+#include "../../firmware/dcdbas.h"
 
 #define BRIGHTNESS_TOKEN 0x7d
 
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 02fe2b8b893..9d93cb971e5 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -90,7 +90,7 @@ enum {
 };
 
 static const char *cm_getv[] = {
-	"WLDG", NULL, NULL, NULL,
+	"WLDG", "BTHG", NULL, NULL,
 	"CAMG", NULL, NULL, NULL,
 	NULL, "PBLG", NULL, NULL,
 	"CFVG", NULL, NULL, NULL,
@@ -99,7 +99,7 @@ static const char *cm_getv[] = {
 };
 
 static const char *cm_setv[] = {
-	"WLDS", NULL, NULL, NULL,
+	"WLDS", "BTHS", NULL, NULL,
 	"CAMS", NULL, NULL, NULL,
 	"SDSP", "PBLS", "HDPS", NULL,
 	"CFVS", NULL, NULL, NULL,
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 3478453eba7..bcbc05107ba 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -21,7 +21,7 @@
  *  02110-1301, USA.
  */
 
-#define TPACPI_VERSION "0.21"
+#define TPACPI_VERSION "0.22"
 #define TPACPI_SYSFS_VERSION 0x020200
 
 /*
@@ -122,6 +122,27 @@ enum {
 #define TPACPI_HKEY_INPUT_PRODUCT	0x5054 /* "TP" */
 #define TPACPI_HKEY_INPUT_VERSION	0x4101
 
+/* ACPI \WGSV commands */
+enum {
+	TP_ACPI_WGSV_GET_STATE		= 0x01, /* Get state information */
+	TP_ACPI_WGSV_PWR_ON_ON_RESUME	= 0x02, /* Resume WWAN powered on */
+	TP_ACPI_WGSV_PWR_OFF_ON_RESUME	= 0x03,	/* Resume WWAN powered off */
+	TP_ACPI_WGSV_SAVE_STATE		= 0x04, /* Save state for S4/S5 */
+};
+
+/* TP_ACPI_WGSV_GET_STATE bits */
+enum {
+	TP_ACPI_WGSV_STATE_WWANEXIST	= 0x0001, /* WWAN hw available */
+	TP_ACPI_WGSV_STATE_WWANPWR	= 0x0002, /* WWAN radio enabled */
+	TP_ACPI_WGSV_STATE_WWANPWRRES	= 0x0004, /* WWAN state at resume */
+	TP_ACPI_WGSV_STATE_WWANBIOSOFF	= 0x0008, /* WWAN disabled in BIOS */
+	TP_ACPI_WGSV_STATE_BLTHEXIST	= 0x0001, /* BLTH hw available */
+	TP_ACPI_WGSV_STATE_BLTHPWR	= 0x0002, /* BLTH radio enabled */
+	TP_ACPI_WGSV_STATE_BLTHPWRRES	= 0x0004, /* BLTH state at resume */
+	TP_ACPI_WGSV_STATE_BLTHBIOSOFF	= 0x0008, /* BLTH disabled in BIOS */
+	TP_ACPI_WGSV_STATE_UWBEXIST	= 0x0010, /* UWB hw available */
+	TP_ACPI_WGSV_STATE_UWBPWR	= 0x0020, /* UWB radio enabled */
+};
 
 /****************************************************************************
  * Main driver
@@ -148,14 +169,17 @@ enum {
 enum {
 	TPACPI_RFK_BLUETOOTH_SW_ID = 0,
 	TPACPI_RFK_WWAN_SW_ID,
+	TPACPI_RFK_UWB_SW_ID,
 };
 
 /* Debugging */
 #define TPACPI_LOG TPACPI_FILE ": "
-#define TPACPI_ERR	   KERN_ERR    TPACPI_LOG
-#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
-#define TPACPI_INFO   KERN_INFO   TPACPI_LOG
-#define TPACPI_DEBUG  KERN_DEBUG  TPACPI_LOG
+#define TPACPI_ALERT	KERN_ALERT  TPACPI_LOG
+#define TPACPI_CRIT	KERN_CRIT   TPACPI_LOG
+#define TPACPI_ERR	KERN_ERR    TPACPI_LOG
+#define TPACPI_NOTICE	KERN_NOTICE TPACPI_LOG
+#define TPACPI_INFO	KERN_INFO   TPACPI_LOG
+#define TPACPI_DEBUG	KERN_DEBUG  TPACPI_LOG
 
 #define TPACPI_DBG_ALL		0xffff
 #define TPACPI_DBG_INIT		0x0001
@@ -201,6 +225,7 @@ struct ibm_struct {
 	void (*exit) (void);
 	void (*resume) (void);
 	void (*suspend) (pm_message_t state);
+	void (*shutdown) (void);
 
 	struct list_head all_drivers;
 
@@ -239,6 +264,7 @@ static struct {
 	u32 bright_16levels:1;
 	u32 bright_acpimode:1;
 	u32 wan:1;
+	u32 uwb:1;
 	u32 fan_ctrl_status_undef:1;
 	u32 input_device_registered:1;
 	u32 platform_drv_registered:1;
@@ -288,6 +314,18 @@ struct tpacpi_led_classdev {
 	unsigned int led;
 };
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+static int dbg_wlswemul;
+static int tpacpi_wlsw_emulstate;
+static int dbg_bluetoothemul;
+static int tpacpi_bluetooth_emulstate;
+static int dbg_wwanemul;
+static int tpacpi_wwan_emulstate;
+static int dbg_uwbemul;
+static int tpacpi_uwb_emulstate;
+#endif
+
+
 /****************************************************************************
  ****************************************************************************
  *
@@ -728,6 +766,18 @@ static int tpacpi_resume_handler(struct platform_device *pdev)
 	return 0;
 }
 
+static void tpacpi_shutdown_handler(struct platform_device *pdev)
+{
+	struct ibm_struct *ibm, *itmp;
+
+	list_for_each_entry_safe(ibm, itmp,
+				 &tpacpi_all_drivers,
+				 all_drivers) {
+		if (ibm->shutdown)
+			(ibm->shutdown)();
+	}
+}
+
 static struct platform_driver tpacpi_pdriver = {
 	.driver = {
 		.name = TPACPI_DRVR_NAME,
@@ -735,6 +785,7 @@ static struct platform_driver tpacpi_pdriver = {
 	},
 	.suspend = tpacpi_suspend_handler,
 	.resume = tpacpi_resume_handler,
+	.shutdown = tpacpi_shutdown_handler,
 };
 
 static struct platform_driver tpacpi_hwmon_pdriver = {
@@ -922,11 +973,27 @@ static int __init tpacpi_new_rfkill(const unsigned int id,
 			struct rfkill **rfk,
 			const enum rfkill_type rfktype,
 			const char *name,
+			const bool set_default,
 			int (*toggle_radio)(void *, enum rfkill_state),
 			int (*get_state)(void *, enum rfkill_state *))
 {
 	int res;
-	enum rfkill_state initial_state;
+	enum rfkill_state initial_state = RFKILL_STATE_SOFT_BLOCKED;
+
+	res = get_state(NULL, &initial_state);
+	if (res < 0) {
+		printk(TPACPI_ERR
+			"failed to read initial state for %s, error %d; "
+			"will turn radio off\n", name, res);
+	} else if (set_default) {
+		/* try to set the initial state as the default for the rfkill
+		 * type, since we ask the firmware to preserve it across S5 in
+		 * NVRAM */
+		rfkill_set_default(rfktype,
+				(initial_state == RFKILL_STATE_UNBLOCKED) ?
+					RFKILL_STATE_UNBLOCKED :
+					RFKILL_STATE_SOFT_BLOCKED);
+	}
 
 	*rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype);
 	if (!*rfk) {
@@ -938,9 +1005,7 @@ static int __init tpacpi_new_rfkill(const unsigned int id,
 	(*rfk)->name = name;
 	(*rfk)->get_state = get_state;
 	(*rfk)->toggle_radio = toggle_radio;
-
-	if (!get_state(NULL, &initial_state))
-		(*rfk)->state = initial_state;
+	(*rfk)->state = initial_state;
 
 	res = rfkill_register(*rfk);
 	if (res < 0) {
@@ -1006,6 +1071,119 @@ static DRIVER_ATTR(version, S_IRUGO,
 
 /* --------------------------------------------------------------------- */
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+
+static void tpacpi_send_radiosw_update(void);
+
+/* wlsw_emulstate ------------------------------------------------------ */
+static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
+						char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
+}
+
+static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
+						const char *buf, size_t count)
+{
+	unsigned long t;
+
+	if (parse_strtoul(buf, 1, &t))
+		return -EINVAL;
+
+	if (tpacpi_wlsw_emulstate != t) {
+		tpacpi_wlsw_emulstate = !!t;
+		tpacpi_send_radiosw_update();
+	} else
+		tpacpi_wlsw_emulstate = !!t;
+
+	return count;
+}
+
+static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
+		tpacpi_driver_wlsw_emulstate_show,
+		tpacpi_driver_wlsw_emulstate_store);
+
+/* bluetooth_emulstate ------------------------------------------------- */
+static ssize_t tpacpi_driver_bluetooth_emulstate_show(
+					struct device_driver *drv,
+					char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
+}
+
+static ssize_t tpacpi_driver_bluetooth_emulstate_store(
+					struct device_driver *drv,
+					const char *buf, size_t count)
+{
+	unsigned long t;
+
+	if (parse_strtoul(buf, 1, &t))
+		return -EINVAL;
+
+	tpacpi_bluetooth_emulstate = !!t;
+
+	return count;
+}
+
+static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
+		tpacpi_driver_bluetooth_emulstate_show,
+		tpacpi_driver_bluetooth_emulstate_store);
+
+/* wwan_emulstate ------------------------------------------------- */
+static ssize_t tpacpi_driver_wwan_emulstate_show(
+					struct device_driver *drv,
+					char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
+}
+
+static ssize_t tpacpi_driver_wwan_emulstate_store(
+					struct device_driver *drv,
+					const char *buf, size_t count)
+{
+	unsigned long t;
+
+	if (parse_strtoul(buf, 1, &t))
+		return -EINVAL;
+
+	tpacpi_wwan_emulstate = !!t;
+
+	return count;
+}
+
+static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
+		tpacpi_driver_wwan_emulstate_show,
+		tpacpi_driver_wwan_emulstate_store);
+
+/* uwb_emulstate ------------------------------------------------- */
+static ssize_t tpacpi_driver_uwb_emulstate_show(
+					struct device_driver *drv,
+					char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
+}
+
+static ssize_t tpacpi_driver_uwb_emulstate_store(
+					struct device_driver *drv,
+					const char *buf, size_t count)
+{
+	unsigned long t;
+
+	if (parse_strtoul(buf, 1, &t))
+		return -EINVAL;
+
+	tpacpi_uwb_emulstate = !!t;
+
+	return count;
+}
+
+static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
+		tpacpi_driver_uwb_emulstate_show,
+		tpacpi_driver_uwb_emulstate_store);
+#endif
+
+/* --------------------------------------------------------------------- */
+
 static struct driver_attribute *tpacpi_driver_attributes[] = {
 	&driver_attr_debug_level, &driver_attr_version,
 	&driver_attr_interface_version,
@@ -1022,6 +1200,17 @@ static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
 		i++;
 	}
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (!res && dbg_wlswemul)
+		res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
+	if (!res && dbg_bluetoothemul)
+		res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
+	if (!res && dbg_wwanemul)
+		res = driver_create_file(drv, &driver_attr_wwan_emulstate);
+	if (!res && dbg_uwbemul)
+		res = driver_create_file(drv, &driver_attr_uwb_emulstate);
+#endif
+
 	return res;
 }
 
@@ -1031,6 +1220,13 @@ static void tpacpi_remove_driver_attributes(struct device_driver *drv)
 
 	for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
 		driver_remove_file(drv, tpacpi_driver_attributes[i]);
+
+#ifdef THINKPAD_ACPI_DEBUGFACILITIES
+	driver_remove_file(drv, &driver_attr_wlsw_emulstate);
+	driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
+	driver_remove_file(drv, &driver_attr_wwan_emulstate);
+	driver_remove_file(drv, &driver_attr_uwb_emulstate);
+#endif
 }
 
 /****************************************************************************
@@ -1216,6 +1412,12 @@ static struct attribute_set *hotkey_dev_attributes;
 
 static int hotkey_get_wlsw(int *status)
 {
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (dbg_wlswemul) {
+		*status = !!tpacpi_wlsw_emulstate;
+		return 0;
+	}
+#endif
 	if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
 		return -EIO;
 	return 0;
@@ -1678,7 +1880,7 @@ static ssize_t hotkey_mask_show(struct device *dev,
 {
 	int res;
 
-	if (mutex_lock_interruptible(&hotkey_mutex))
+	if (mutex_lock_killable(&hotkey_mutex))
 		return -ERESTARTSYS;
 	res = hotkey_mask_get();
 	mutex_unlock(&hotkey_mutex);
@@ -1697,7 +1899,7 @@ static ssize_t hotkey_mask_store(struct device *dev,
 	if (parse_strtoul(buf, 0xffffffffUL, &t))
 		return -EINVAL;
 
-	if (mutex_lock_interruptible(&hotkey_mutex))
+	if (mutex_lock_killable(&hotkey_mutex))
 		return -ERESTARTSYS;
 
 	res = hotkey_mask_set(t);
@@ -1783,7 +1985,7 @@ static ssize_t hotkey_source_mask_store(struct device *dev,
 		((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
 		return -EINVAL;
 
-	if (mutex_lock_interruptible(&hotkey_mutex))
+	if (mutex_lock_killable(&hotkey_mutex))
 		return -ERESTARTSYS;
 
 	HOTKEY_CONFIG_CRITICAL_START
@@ -1818,7 +2020,7 @@ static ssize_t hotkey_poll_freq_store(struct device *dev,
 	if (parse_strtoul(buf, 25, &t))
 		return -EINVAL;
 
-	if (mutex_lock_interruptible(&hotkey_mutex))
+	if (mutex_lock_killable(&hotkey_mutex))
 		return -ERESTARTSYS;
 
 	hotkey_poll_freq = t;
@@ -1958,6 +2160,7 @@ static struct attribute *hotkey_mask_attributes[] __initdata = {
 
 static void bluetooth_update_rfk(void);
 static void wan_update_rfk(void);
+static void uwb_update_rfk(void);
 static void tpacpi_send_radiosw_update(void)
 {
 	int wlsw;
@@ -1967,6 +2170,8 @@ static void tpacpi_send_radiosw_update(void)
 		bluetooth_update_rfk();
 	if (tp_features.wan)
 		wan_update_rfk();
+	if (tp_features.uwb)
+		uwb_update_rfk();
 
 	if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
 		mutex_lock(&tpacpi_inputdev_send_mutex);
@@ -2222,6 +2427,13 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 		    hotkey_source_mask, hotkey_poll_freq);
 #endif
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+	if (dbg_wlswemul) {
+		tp_features.hotkey_wlsw = 1;
+		printk(TPACPI_INFO
+			"radio switch emulation enabled\n");
+	} else
+#endif
 	/* Not all thinkpads have a hardware radio switch */
 	if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
 		tp_features.hotkey_wlsw = 1;
@@ -2361,13 +2573,154 @@ err_exit:
 	return (res < 0)? res : 1;
 }
 
+static bool hotkey_notify_hotkey(const u32 hkey,
+				 bool *send_acpi_ev,
+				 bool *ignore_acpi_ev)
+{
+	/* 0x1000-0x1FFF: key presses */
+	unsigned int scancode = hkey & 0xfff;
+	*send_acpi_ev = true;
+	*ignore_acpi_ev = false;
+
+	if (scancode > 0 && scancode < 0x21) {
+		scancode--;
+		if (!(hotkey_source_mask & (1 << scancode))) {
+			tpacpi_input_send_key(scancode);
+			*send_acpi_ev = false;
+		} else {
+			*ignore_acpi_ev = true;
+		}
+		return true;
+	}
+	return false;
+}
+
+static bool hotkey_notify_wakeup(const u32 hkey,
+				 bool *send_acpi_ev,
+				 bool *ignore_acpi_ev)
+{
+	/* 0x2000-0x2FFF: Wakeup reason */
+	*send_acpi_ev = true;
+	*ignore_acpi_ev = false;
+
+	switch (hkey) {
+	case 0x2304: /* suspend, undock */
+	case 0x2404: /* hibernation, undock */
+		hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
+		*ignore_acpi_ev = true;
+		break;
+
+	case 0x2305: /* suspend, bay eject */
+	case 0x2405: /* hibernation, bay eject */
+		hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
+		*ignore_acpi_ev = true;
+		break;
+
+	case 0x2313: /* Battery on critical low level (S3) */
+	case 0x2413: /* Battery on critical low level (S4) */
+		printk(TPACPI_ALERT
+			"EMERGENCY WAKEUP: battery almost empty\n");
+		/* how to auto-heal: */
+		/* 2313: woke up from S3, go to S4/S5 */
+		/* 2413: woke up from S4, go to S5 */
+		break;
+
+	default:
+		return false;
+	}
+
+	if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
+		printk(TPACPI_INFO
+		       "woke up due to a hot-unplug "
+		       "request...\n");
+		hotkey_wakeup_reason_notify_change();
+	}
+	return true;
+}
+
+static bool hotkey_notify_usrevent(const u32 hkey,
+				 bool *send_acpi_ev,
+				 bool *ignore_acpi_ev)
+{
+	/* 0x5000-0x5FFF: human interface helpers */
+	*send_acpi_ev = true;
+	*ignore_acpi_ev = false;
+
+	switch (hkey) {
+	case 0x5010: /* Lenovo new BIOS: brightness changed */
+	case 0x500b: /* X61t: tablet pen inserted into bay */
+	case 0x500c: /* X61t: tablet pen removed from bay */
+		return true;
+
+	case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
+	case 0x500a: /* X41t-X61t: swivel down (normal mode) */
+		tpacpi_input_send_tabletsw();
+		hotkey_tablet_mode_notify_change();
+		*send_acpi_ev = false;
+		return true;
+
+	case 0x5001:
+	case 0x5002:
+		/* LID switch events.  Do not propagate */
+		*ignore_acpi_ev = true;
+		return true;
+
+	default:
+		return false;
+	}
+}
+
+static bool hotkey_notify_thermal(const u32 hkey,
+				 bool *send_acpi_ev,
+				 bool *ignore_acpi_ev)
+{
+	/* 0x6000-0x6FFF: thermal alarms */
+	*send_acpi_ev = true;
+	*ignore_acpi_ev = false;
+
+	switch (hkey) {
+	case 0x6011:
+		printk(TPACPI_CRIT
+			"THERMAL ALARM: battery is too hot!\n");
+		/* recommended action: warn user through gui */
+		return true;
+	case 0x6012:
+		printk(TPACPI_ALERT
+			"THERMAL EMERGENCY: battery is extremely hot!\n");
+		/* recommended action: immediate sleep/hibernate */
+		return true;
+	case 0x6021:
+		printk(TPACPI_CRIT
+			"THERMAL ALARM: "
+			"a sensor reports something is too hot!\n");
+		/* recommended action: warn user through gui, that */
+		/* some internal component is too hot */
+		return true;
+	case 0x6022:
+		printk(TPACPI_ALERT
+			"THERMAL EMERGENCY: "
+			"a sensor reports something is extremely hot!\n");
+		/* recommended action: immediate sleep/hibernate */
+		return true;
+	case 0x6030:
+		printk(TPACPI_INFO
+			"EC reports that Thermal Table has changed\n");
+		/* recommended action: do nothing, we don't have
+		 * Lenovo ATM information */
+		return true;
+	default:
+		printk(TPACPI_ALERT
+			 "THERMAL ALERT: unknown thermal alarm received\n");
+		return false;
+	}
+}
+
 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 {
 	u32 hkey;
-	unsigned int scancode;
-	int send_acpi_ev;
-	int ignore_acpi_ev;
-	int unk_ev;
+	bool send_acpi_ev;
+	bool ignore_acpi_ev;
+	bool known_ev;
 
 	if (event != 0x80) {
 		printk(TPACPI_ERR
@@ -2375,7 +2728,7 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 		/* forward it to userspace, maybe it knows how to handle it */
 		acpi_bus_generate_netlink_event(
 					ibm->acpi->device->pnp.device_class,
-					ibm->acpi->device->dev.bus_id,
+					dev_name(&ibm->acpi->device->dev),
 					event, 0);
 		return;
 	}
@@ -2391,107 +2744,72 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 			return;
 		}
 
-		send_acpi_ev = 1;
-		ignore_acpi_ev = 0;
-		unk_ev = 0;
+		send_acpi_ev = true;
+		ignore_acpi_ev = false;
 
 		switch (hkey >> 12) {
 		case 1:
 			/* 0x1000-0x1FFF: key presses */
-			scancode = hkey & 0xfff;
-			if (scancode > 0 && scancode < 0x21) {
-				scancode--;
-				if (!(hotkey_source_mask & (1 << scancode))) {
-					tpacpi_input_send_key(scancode);
-					send_acpi_ev = 0;
-				} else {
-					ignore_acpi_ev = 1;
-				}
-			} else {
-				unk_ev = 1;
-			}
+			known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
+						 &ignore_acpi_ev);
 			break;
 		case 2:
-			/* Wakeup reason */
-			switch (hkey) {
-			case 0x2304: /* suspend, undock */
-			case 0x2404: /* hibernation, undock */
-				hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
-				ignore_acpi_ev = 1;
-				break;
-			case 0x2305: /* suspend, bay eject */
-			case 0x2405: /* hibernation, bay eject */
-				hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
-				ignore_acpi_ev = 1;
-				break;
-			default:
-				unk_ev = 1;
-			}
-			if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
-				printk(TPACPI_INFO
-				       "woke up due to a hot-unplug "
-				       "request...\n");
-				hotkey_wakeup_reason_notify_change();
-			}
+			/* 0x2000-0x2FFF: Wakeup reason */
+			known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
+						 &ignore_acpi_ev);
 			break;
 		case 3:
-			/* bay-related wakeups */
+			/* 0x3000-0x3FFF: bay-related wakeups */
 			if (hkey == 0x3003) {
 				hotkey_autosleep_ack = 1;
 				printk(TPACPI_INFO
 				       "bay ejected\n");
 				hotkey_wakeup_hotunplug_complete_notify_change();
+				known_ev = true;
 			} else {
-				unk_ev = 1;
+				known_ev = false;
 			}
 			break;
 		case 4:
-			/* dock-related wakeups */
+			/* 0x4000-0x4FFF: dock-related wakeups */
 			if (hkey == 0x4003) {
 				hotkey_autosleep_ack = 1;
 				printk(TPACPI_INFO
 				       "undocked\n");
 				hotkey_wakeup_hotunplug_complete_notify_change();
+				known_ev = true;
 			} else {
-				unk_ev = 1;
+				known_ev = false;
 			}
 			break;
 		case 5:
 			/* 0x5000-0x5FFF: human interface helpers */
-			switch (hkey) {
-			case 0x5010: /* Lenovo new BIOS: brightness changed */
-			case 0x500b: /* X61t: tablet pen inserted into bay */
-			case 0x500c: /* X61t: tablet pen removed from bay */
-				break;
-			case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
-			case 0x500a: /* X41t-X61t: swivel down (normal mode) */
-				tpacpi_input_send_tabletsw();
-				hotkey_tablet_mode_notify_change();
-				send_acpi_ev = 0;
-				break;
-			case 0x5001:
-			case 0x5002:
-				/* LID switch events.  Do not propagate */
-				ignore_acpi_ev = 1;
-				break;
-			default:
-				unk_ev = 1;
-			}
+			known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
+						 &ignore_acpi_ev);
+			break;
+		case 6:
+			/* 0x6000-0x6FFF: thermal alarms */
+			known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
+						 &ignore_acpi_ev);
 			break;
 		case 7:
 			/* 0x7000-0x7FFF: misc */
 			if (tp_features.hotkey_wlsw && hkey == 0x7000) {