Merge branch 'thinkpad-acpi' into release

3 files changed, 791 insertions, 155 deletions

diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt
index 898b4987bb80..41bc99fa1884 100644
--- a/Documentation/laptops/thinkpad-acpi.txt
+++ b/Documentation/laptops/thinkpad-acpi.txt
@@ -1,7 +1,7 @@
                      ThinkPad ACPI Extras Driver
 
-                            Version 0.21
-                           May 29th, 2008
+                            Version 0.22
+                        November 23rd,  2008
 
                Borislav Deianov <borislav@users.sf.net>
              Henrique de Moraes Holschuh <hmh@hmh.eng.br>
@@ -16,7 +16,8 @@ supported by the generic Linux ACPI drivers.
 This driver used to be named ibm-acpi until kernel 2.6.21 and release
 0.13-20070314.  It used to be in the drivers/acpi tree, but it was
 moved to the drivers/misc tree and renamed to thinkpad-acpi for kernel
-2.6.22, and release 0.14.
+2.6.22, and release 0.14.  It was moved to drivers/platform/x86 for
+kernel 2.6.29 and release 0.22.
 
 The driver is named "thinkpad-acpi".  In some places, like module
 names, "thinkpad_acpi" is used because of userspace issues.
@@ -1412,6 +1413,24 @@ Sysfs notes:
         rfkill controller switch "tpacpi_wwan_sw": refer to
         Documentation/rfkill.txt for details.
 
+EXPERIMENTAL: UWB
+-----------------
+
+This feature is marked EXPERIMENTAL because it has not been extensively
+tested and validated in various ThinkPad models yet.  The feature may not
+work as expected. USE WITH CAUTION! To use this feature, you need to supply
+the experimental=1 parameter when loading the module.
+
+sysfs rfkill class: switch "tpacpi_uwb_sw"
+
+This feature exports an rfkill controller for the UWB device, if one is
+present and enabled in the BIOS.
+
+Sysfs notes:
+
+        rfkill controller switch "tpacpi_uwb_sw": refer to
+        Documentation/rfkill.txt for details.
+
 Multiple Commands, Module Parameters
 ------------------------------------
 
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index e65448e99b48..431772b8a1d0 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -192,6 +192,17 @@ 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/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 3478453eba7a..bcbc05107ba8 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) {
                                 tpacpi_send_radiosw_update();
                                 send_acpi_ev = 0;
+                                known_ev = true;
                                 break;
                         }
                         /* fallthrough to default */
                 default:
-                        unk_ev = 1;
+                        known_ev = false;
                 }
-                if (unk_ev) {
+                if (!known_ev) {
                         printk(TPACPI_NOTICE
                                "unhandled HKEY event 0x%04x\n", hkey);
+                        printk(TPACPI_NOTICE
+                               "please report the conditions when this "
+                               "event happened to %s\n", TPACPI_MAIL);
                 }
 
                 /* Legacy events */
@@ -2505,7 +2823,7 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
                 if (!ignore_acpi_ev && send_acpi_ev) {
                         acpi_bus_generate_netlink_event(
                                         ibm->acpi->device->pnp.device_class,
-                                        ibm->acpi->device->dev.bus_id,
+                                        dev_name(&ibm->acpi->device->dev),
                                         event, hkey);
                 }
         }
@@ -2544,7 +2862,7 @@ static int hotkey_read(char *p)
                 return len;
         }
 
-        if (mutex_lock_interruptible(&hotkey_mutex))
+        if (mutex_lock_killable(&hotkey_mutex))
                 return -ERESTARTSYS;
         res = hotkey_status_get(&status);
         if (!res)
@@ -2575,7 +2893,7 @@ static int hotkey_write(char *buf)
         if (!tp_features.hotkey)
                 return -ENODEV;
 
-        if (mutex_lock_interruptible(&hotkey_mutex))
+        if (mutex_lock_killable(&hotkey_mutex))
                 return -ERESTARTSYS;
 
         status = -1;
@@ -2640,11 +2958,28 @@ enum {
         /* ACPI GBDC/SBDC bits */
         TP_ACPI_BLUETOOTH_HWPRESENT     = 0x01, /* Bluetooth hw available */
         TP_ACPI_BLUETOOTH_RADIOSSW      = 0x02, /* Bluetooth radio enabled */
-        TP_ACPI_BLUETOOTH_UNK           = 0x04, /* unknown function */
+        TP_ACPI_BLUETOOTH_RESUMECTRL    = 0x04, /* Bluetooth state at resume:
+                                                   off / last state */
+};
+
+enum {
+        /* ACPI \BLTH commands */
+        TP_ACPI_BLTH_GET_ULTRAPORT_ID   = 0x00, /* Get Ultraport BT ID */
+        TP_ACPI_BLTH_GET_PWR_ON_RESUME  = 0x01, /* Get power-on-resume state */
+        TP_ACPI_BLTH_PWR_ON_ON_RESUME   = 0x02, /* Resume powered on */
+        TP_ACPI_BLTH_PWR_OFF_ON_RESUME  = 0x03, /* Resume powered off */
+        TP_ACPI_BLTH_SAVE_STATE         = 0x05, /* Save state for S4/S5 */
 };
 
 static struct rfkill *tpacpi_bluetooth_rfkill;
 
+static void bluetooth_suspend(pm_message_t state)
+{
+        /* Try to make sure radio will resume powered off */
+        acpi_evalf(NULL, NULL, "\\BLTH", "vd",
+                   TP_ACPI_BLTH_PWR_OFF_ON_RESUME);
+}
+
 static int bluetooth_get_radiosw(void)
 {
         int status;
@@ -2656,6 +2991,12 @@ static int bluetooth_get_radiosw(void)
         if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
                 return RFKILL_STATE_HARD_BLOCKED;
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+        if (dbg_bluetoothemul)
+                return (tpacpi_bluetooth_emulstate) ?
+                        RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+#endif
+
         if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
                 return -EIO;
 
@@ -2689,12 +3030,20 @@ static int bluetooth_set_radiosw(int radio_on, int update_rfk)
             && radio_on)
                 return -EPERM;
 
-        if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
-                return -EIO;
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+        if (dbg_bluetoothemul) {
+                tpacpi_bluetooth_emulstate = !!radio_on;
+                if (update_rfk)
+                        bluetooth_update_rfk();
+                return 0;
+        }
+#endif
+
+        /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
         if (radio_on)
-                status |= TP_ACPI_BLUETOOTH_RADIOSSW;
+                status = TP_ACPI_BLUETOOTH_RADIOSSW;
         else
-                status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
+                status = 0;
         if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
                 return -EIO;
 
@@ -2765,8 +3114,19 @@ static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state)
         return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
 }
 
+static void bluetooth_shutdown(void)
+{
+        /* Order firmware to save current state to NVRAM */
+        if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
+                        TP_ACPI_BLTH_SAVE_STATE))
+                printk(TPACPI_NOTICE
+                        "failed to save bluetooth state to NVRAM\n");
+}
+
 static void bluetooth_exit(void)
 {
+        bluetooth_shutdown();
+
         if (tpacpi_bluetooth_rfkill)
                 rfkill_unregister(tpacpi_bluetooth_rfkill);
 
@@ -2792,6 +3152,13 @@ static int __init bluetooth_init(struct ibm_init_struct *iibm)
                 str_supported(tp_features.bluetooth),
                 status);
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+        if (dbg_bluetoothemul) {
+                tp_features.bluetooth = 1;
+                printk(TPACPI_INFO
+                        "bluetooth switch emulation enabled\n");
+        } else
+#endif
         if (tp_features.bluetooth &&
             !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
                 /* no bluetooth hardware present in system */
@@ -2812,6 +3179,7 @@ static int __init bluetooth_init(struct ibm_init_struct *iibm)
                                 &tpacpi_bluetooth_rfkill,
                                 RFKILL_TYPE_BLUETOOTH,
                                 "tpacpi_bluetooth_sw",
+                                true,
                                 tpacpi_bluetooth_rfk_set,
                                 tpacpi_bluetooth_rfk_get);
         if (res) {
@@ -2864,6 +3232,8 @@ static struct ibm_struct bluetooth_driver_data = {
         .read = bluetooth_read,
         .write = bluetooth_write,
         .exit = bluetooth_exit,
+        .suspend = bluetooth_suspend,
+        .shutdown = bluetooth_shutdown,
 };
 
 /*************************************************************************
@@ -2874,11 +3244,19 @@ enum {
         /* ACPI GWAN/SWAN bits */
         TP_ACPI_WANCARD_HWPRESENT       = 0x01, /* Wan hw available */
         TP_ACPI_WANCARD_RADIOSSW        = 0x02, /* Wan radio enabled */
-        TP_ACPI_WANCARD_UNK             = 0x04, /* unknown function */
+        TP_ACPI_WANCARD_RESUMECTRL      = 0x04, /* Wan state at resume:
+                                                   off / last state */
 };
 
 static struct rfkill *tpacpi_wan_rfkill;
 
+static void wan_suspend(pm_message_t state)
+{
+        /* Try to make sure radio will resume powered off */
+        acpi_evalf(NULL, NULL, "\\WGSV", "qvd",
+                   TP_ACPI_WGSV_PWR_OFF_ON_RESUME);
+}
+
 static int wan_get_radiosw(void)
 {
         int status;
@@ -2890,6 +3268,12 @@ static int wan_get_radiosw(void)
         if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
                 return RFKILL_STATE_HARD_BLOCKED;
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+        if (dbg_wwanemul)
+                return (tpacpi_wwan_emulstate) ?
+                        RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+#endif
+
         if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
                 return -EIO;
 
@@ -2923,12 +3307,20 @@ static int wan_set_radiosw(int radio_on, int update_rfk)
             && radio_on)
                 return -EPERM;
 
-        if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
-                return -EIO;
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+        if (dbg_wwanemul) {
+                tpacpi_wwan_emulstate = !!radio_on;
+                if (update_rfk)
+                        wan_update_rfk();
+                return 0;
+        }
+#endif
+
+        /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
         if (radio_on)
-                status |= TP_ACPI_WANCARD_RADIOSSW;
+                status = TP_ACPI_WANCARD_RADIOSSW;
         else
-                status &= ~TP_ACPI_WANCARD_RADIOSSW;
+                status = 0;
         if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
                 return -EIO;
 
@@ -2999,8 +3391,19 @@ static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state)
         return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
 }
 
+static void wan_shutdown(void)
+{
+        /* Order firmware to save current state to NVRAM */
+        if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
+                        TP_ACPI_WGSV_SAVE_STATE))
+                printk(TPACPI_NOTICE
+                        "failed to save WWAN state to NVRAM\n");
+}
+
 static void wan_exit(void)
 {
+        wan_shutdown();
+
         if (tpacpi_wan_rfkill)
                 rfkill_unregister(tpacpi_wan_rfkill);
 
@@ -3024,6 +3427,13 @@ static int __init wan_init(struct ibm_init_struct *iibm)
                 str_supported(tp_features.wan),
                 status);
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+        if (dbg_wwanemul) {
+                tp_features.wan = 1;
+                printk(TPACPI_INFO
+                        "wwan switch emulation enabled\n");
+        } else
+#endif
         if (tp_features.wan &&
             !(status & TP_ACPI_WANCARD_HWPRESENT)) {
                 /* no wan hardware present in system */
@@ -3044,6 +3454,7 @@ static int __init wan_init(struct ibm_init_struct *iibm)
                                 &tpacpi_wan_rfkill,
                                 RFKILL_TYPE_WWAN,
                                 "tpacpi_wwan_sw",
+                                true,
                                 tpacpi_wan_rfk_set,
                                 tpacpi_wan_rfk_get);
         if (res) {
@@ -3096,6 +3507,164 @@ static struct ibm_struct wan_driver_data = {
         .read = wan_read,
         .write = wan_write,
         .exit = wan_exit,
+        .suspend = wan_suspend,
+        .shutdown = wan_shutdown,
+};
+
+/*************************************************************************
+ * UWB subdriver
+ */
+
+enum {
+        /* ACPI GUWB/SUWB bits */
+        TP_ACPI_UWB_HWPRESENT   = 0x01, /* UWB hw available */
+        TP_ACPI_UWB_RADIOSSW    = 0x02, /* UWB radio enabled */
+};
+
+static struct rfkill *tpacpi_uwb_rfkill;
+
+static int uwb_get_radiosw(void)
+{
+        int status;
+
+        if (!tp_features.uwb)
+                return -ENODEV;
+
+        /* WLSW overrides UWB in firmware/hardware, reflect that */
+        if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
+                return RFKILL_STATE_HARD_BLOCKED;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+        if (dbg_uwbemul)
+                return (tpacpi_uwb_emulstate) ?
+                        RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+#endif
+
+        if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
+                return -EIO;
+
+        return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
+                RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+}
+
+static void uwb_update_rfk(void)
+{
+        int status;
+
+        if (!tpacpi_uwb_rfkill)
+                return;
+
+        status = uwb_get_radiosw();
+        if (status < 0)
+                return;
+        rfkill_force_state(tpacpi_uwb_rfkill, status);
+}
+
+static int uwb_set_radiosw(int radio_on, int update_rfk)
+{
+        int status;
+
+        if (!tp_features.uwb)
+                return -ENODEV;
+
+        /* WLSW overrides UWB in firmware/hardware, but there is no
+         * reason to risk weird behaviour. */
+        if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
+            && radio_on)
+                return -EPERM;
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+        if (dbg_uwbemul) {
+                tpacpi_uwb_emulstate = !!radio_on;
+                if (update_rfk)
+                        uwb_update_rfk();
+                return 0;
+        }
+#endif
+
+        status = (radio_on) ? TP_ACPI_UWB_RADIOSSW : 0;
+        if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
+                return -EIO;
+
+        if (update_rfk)
+                uwb_update_rfk();
+
+        return 0;
+}
+
+/* --------------------------------------------------------------------- */
+
+static int tpacpi_uwb_rfk_get(void *data, enum rfkill_state *state)
+{
+        int uwbs = uwb_get_radiosw();
+
+        if (uwbs < 0)
+                return uwbs;
+
+        *state = uwbs;
+        return 0;
+}
+
+static int tpacpi_uwb_rfk_set(void *data, enum rfkill_state state)
+{
+        return uwb_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
+}
+
+static void uwb_exit(void)
+{
+        if (tpacpi_uwb_rfkill)
+                rfkill_unregister(tpacpi_uwb_rfkill);
+}
+
+static int __init uwb_init(struct ibm_init_struct *iibm)
+{
+        int res;
+        int status = 0;
+
+        vdbg_printk(TPACPI_DBG_INIT, "initializing uwb subdriver\n");
+
+        TPACPI_ACPIHANDLE_INIT(hkey);
+
+        tp_features.uwb = hkey_handle &&
+            acpi_evalf(hkey_handle, &status, "GUWB", "qd");
+
+        vdbg_printk(TPACPI_DBG_INIT, "uwb is %s, status 0x%02x\n",
+                str_supported(tp_features.uwb),
+                status);
+
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+        if (dbg_uwbemul) {
+                tp_features.uwb = 1;
+                printk(TPACPI_INFO
+                        "uwb switch emulation enabled\n");
+        } else
+#endif
+        if (tp_features.uwb &&
+            !(status & TP_ACPI_UWB_HWPRESENT)) {
+                /* no uwb hardware present in system */
+                tp_features.uwb = 0;
+                dbg_printk(TPACPI_DBG_INIT,
+                           "uwb hardware not installed\n");
+        }
+
+        if (!tp_features.uwb)
+                return 1;
+
+        res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
+                                &tpacpi_uwb_rfkill,
+                                RFKILL_TYPE_UWB,
+                                "tpacpi_uwb_sw",
+                                false,
+                                tpacpi_uwb_rfk_set,
+                                tpacpi_uwb_rfk_get);
+
+        return res;
+}
+
+static struct ibm_struct uwb_driver_data = {
+        .name = "uwb",
+        .exit = uwb_exit,
+        .flags.experimental = 1,
 };
 
 /*************************************************************************
@@ -3724,7 +4293,7 @@ static void dock_notify(struct ibm_struct *ibm, u32 event)
         }
         acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
         acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
-                                          ibm->acpi->device->dev.bus_id,
+                                          dev_name(&ibm->acpi->device->dev),
                                           event, data);
 }
 
@@ -3826,7 +4395,7 @@ static void bay_notify(struct ibm_struct *ibm, u32 event)
 {
         acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
         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);
 }
 
@@ -4850,7 +5419,7 @@ static int brightness_set(int value)
             value < 0)
                 return -EINVAL;
 
-        res = mutex_lock_interruptible(&brightness_mutex);
+        res = mutex_lock_killable(&brightness_mutex);
         if (res < 0)
                 return res;
 
@@ -5334,6 +5903,60 @@ TPACPI_HANDLE(sfan, ec, "SFAN",	/* 570 */
            );                   /* all others */
 
 /*
+ * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
+ * HFSP register at boot, so it contains 0x07 but the Thinkpad could
+ * be in auto mode (0x80).
+ *
+ * This is corrected by any write to HFSP either by the driver, or
+ * by the firmware.
+ *
+ * We assume 0x07 really means auto mode while this quirk is active,
+ * as this is far more likely than the ThinkPad being in level 7,
+ * which is only used by the firmware during thermal emergencies.
+ */
+
+static void fan_quirk1_detect(void)
+{
+        /* In some ThinkPads, neither the EC nor the ACPI
+         * DSDT initialize the HFSP register, and it ends up
+         * being initially set to 0x07 when it *could* be
+         * either 0x07 or 0x80.
+         *
+         * Enable for TP-1Y (T43), TP-78 (R51e),
+         * TP-76 (R52), TP-70 (T43, R52), which are known
+         * to be buggy. */
+        if (fan_control_initial_status == 0x07) {
+                switch (thinkpad_id.ec_model) {
+                case 0x5931: /* TP-1Y */
+                case 0x3837: /* TP-78 */
+                case 0x3637: /* TP-76 */
+                case 0x3037: /* TP-70 */
+                        printk(TPACPI_NOTICE
+                               "fan_init: initial fan status is unknown, "
+                               "assuming it is in auto mode\n");
+                        tp_features.fan_ctrl_status_undef = 1;
+                        ;;
+                }
+        }
+}
+
+static void fan_quirk1_handle(u8 *fan_status)
+{
+        if (unlikely(tp_features.fan_ctrl_status_undef)) {
+                if (*fan_status != fan_control_initial_status) {
+                        /* something changed the HFSP regisnter since
+                         * driver init time, so it is not undefined
+                         * anymore */
+                        tp_features.fan_ctrl_status_undef = 0;
+                } else {
+                        /* Return most likely status. In fact, it
+                         * might be the only possible status */
+                        *fan_status = TP_EC_FAN_AUTO;
+                }
+        }
+}
+
+/*
  * Call with fan_mutex held
  */
 static void fan_update_desired_level(u8 status)
@@ -5371,8 +5994,10 @@ static int fan_get_status(u8 *status)
                 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
                         return -EIO;
 
-                if (likely(status))
+                if (likely(status)) {
                         *status = s;
+                        fan_quirk1_handle(status);
+                }
 
                 break;
 
@@ -5388,7 +6013,7 @@ static int fan_get_status_safe(u8 *status)
         int rc;
         u8 s;
 
-        if (mutex_lock_interruptible(&fan_mutex))
+        if (mutex_lock_killable(&fan_mutex))
                 return -ERESTARTSYS;
         rc = fan_get_status(&s);
         if (!rc)
@@ -5471,7 +6096,7 @@ static int fan_set_level_safe(int level)
         if (!fan_control_allowed)
                 return -EPERM;
 
-        if (mutex_lock_interruptible(&fan_mutex))
+        if (mutex_lock_killable(&fan_mutex))
                 return -ERESTARTSYS;
 
         if (level == TPACPI_FAN_LAST_LEVEL)
@@ -5493,7 +6118,7 @@ static int fan_set_enable(void)
         if (!fan_control_allowed)
                 return -EPERM;
 
-        if (mutex_lock_interruptible(&fan_mutex))
+        if (mutex_lock_killable(&fan_mutex))
                 return -ERESTARTSYS;
 
         switch (fan_control_access_mode) {
@@ -5548,7 +6173,7 @@ static int fan_set_disable(void)
         if (!fan_control_allowed)
                 return -EPERM;
 
-        if (mutex_lock_interruptible(&fan_mutex))
+        if (mutex_lock_killable(&fan_mutex))
                 return -ERESTARTSYS;
 
         rc = 0;
@@ -5586,7 +6211,7 @@ static int fan_set_speed(int speed)
         if (!fan_control_allowed)
                 return -EPERM;
 
-        if (mutex_lock_interruptible(&fan_mutex))
+        if (mutex_lock_killable(&fan_mutex))
                 return -ERESTARTSYS;
 
         rc = 0;
@@ -5682,16 +6307,6 @@ static ssize_t fan_pwm1_enable_show(struct device *dev,
         if (res)
                 return res;
 
-        if (unlikely(tp_features.fan_ctrl_status_undef)) {
-                if (status != fan_control_initial_status) {
-                        tp_features.fan_ctrl_status_undef = 0;
-                } else {
-                        /* Return most likely status. In fact, it
-                         * might be the only possible status */
-                        status = TP_EC_FAN_AUTO;
-                }
-        }
-
         if (status & TP_EC_FAN_FULLSPEED) {
                 mode = 0;
         } else if (status & TP_EC_FAN_AUTO) {
@@ -5756,14 +6371,6 @@ static ssize_t fan_pwm1_show(struct device *dev,
         if (res)
                 return res;
 
-        if (unlikely(tp_features.fan_ctrl_status_undef)) {
-                if (status != fan_control_initial_status) {
-                        tp_features.fan_ctrl_status_undef = 0;
-                } else {
-                        status = TP_EC_FAN_AUTO;
-                }
-        }
-
         if ((status &
              (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
                 status = fan_control_desired_level;
@@ -5788,7 +6395,7 @@ static ssize_t fan_pwm1_store(struct device *dev,
         /* scale down from 0-255 to 0-7 */
         newlevel = (s >> 5) & 0x07;
 
-        if (mutex_lock_interruptible(&fan_mutex))
+        if (mutex_lock_killable(&fan_mutex))
                 return -ERESTARTSYS;
 
         rc = fan_get_status(&status);
@@ -5895,29 +6502,7 @@ static int __init fan_init(struct ibm_init_struct *iibm)
                 if (likely(acpi_ec_read(fan_status_offset,
                                         &fan_control_initial_status))) {
                         fan_status_access_mode = TPACPI_FAN_RD_TPEC;
-
-                        /* In some ThinkPads, neither the EC nor the ACPI
-                         * DSDT initialize the fan status, and it ends up
-                         * being set to 0x07 when it *could* be either
-                         * 0x07 or 0x80.
-                         *
-                         * Enable for TP-1Y (T43), TP-78 (R51e),
-                         * TP-76 (R52), TP-70 (T43, R52), which are known
-                         * to be buggy. */
-                        if (fan_control_initial_status == 0x07) {
-                                switch (thinkpad_id.ec_model) {
-                                case 0x5931: /* TP-1Y */
-                                case 0x3837: /* TP-78 */
-                                case 0x3637: /* TP-76 */
-                                case 0x3037: /* TP-70 */
-                                        printk(TPACPI_NOTICE
-                                               "fan_init: initial fan status "
-                                               "is unknown, assuming it is "
-                                               "in auto mode\n");
-                                        tp_features.fan_ctrl_status_undef = 1;
-                                        ;;
-                                }
-                        }
+                        fan_quirk1_detect();
                 } else {
                         printk(TPACPI_ERR
                                "ThinkPad ACPI EC access misbehaving, "
@@ -6106,15 +6691,6 @@ static int fan_read(char *p)
                 if (rc < 0)
                         return rc;
 
-                if (unlikely(tp_features.fan_ctrl_status_undef)) {
-                        if (status != fan_control_initial_status)
-                                tp_features.fan_ctrl_status_undef = 0;
-                        else
-                                /* Return most likely status. In fact, it
-                                 * might be the only possible status */
-                                status = TP_EC_FAN_AUTO;
-                }
-
                 len += sprintf(p + len, "status:\t\t%s\n",
                                (status != 0) ? "enabled" : "disabled");
 
@@ -6563,6 +7139,10 @@ static struct ibm_init_struct ibms_init[] __initdata = {
                 .init = wan_init,
                 .data = &wan_driver_data,
         },
+        {
+                .init = uwb_init,
+                .data = &uwb_driver_data,
+        },
 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
         {
                 .init = video_init,
@@ -6701,6 +7281,32 @@ TPACPI_PARAM(brightness);
 TPACPI_PARAM(volume);
 TPACPI_PARAM(fan);
 
+#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
+module_param(dbg_wlswemul, uint, 0);
+MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
+module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
+MODULE_PARM_DESC(wlsw_state,
+                 "Initial state of the emulated WLSW switch");
+
+module_param(dbg_bluetoothemul, uint, 0);
+MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
+module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
+MODULE_PARM_DESC(bluetooth_state,
+                 "Initial state of the emulated bluetooth switch");
+
+module_param(dbg_wwanemul, uint, 0);
+MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
+module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
+MODULE_PARM_DESC(wwan_state,
+                 "Initial state of the emulated WWAN switch");
+
+module_param(dbg_uwbemul, uint, 0);
+MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
+module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
+MODULE_PARM_DESC(uwb_state,
+                 "Initial state of the emulated UWB switch");
+#endif
+
 static void thinkpad_acpi_module_exit(void)
 {
         struct ibm_struct *ibm, *itmp;