1 files changed, 774 insertions, 51 deletions

diff --git a/drivers/misc/fujitsu-laptop.c b/drivers/misc/fujitsu-laptop.c
index 6d14e8fe1537..7a1ef6c262de 100644
--- a/drivers/misc/fujitsu-laptop.c
+++ b/drivers/misc/fujitsu-laptop.c
@@ -1,12 +1,14 @@
 /*-*-linux-c-*-*/
 
 /*
-  Copyright (C) 2007 Jonathan Woithe <jwoithe@physics.adelaide.edu.au>
+  Copyright (C) 2007,2008 Jonathan Woithe <jwoithe@physics.adelaide.edu.au>
+  Copyright (C) 2008 Peter Gruber <nokos@gmx.net>
   Based on earlier work:
     Copyright (C) 2003 Shane Spencer <shane@bogomip.com>
     Adrian Yee <brewt-fujitsu@brewt.org>
 
-  Templated from msi-laptop.c which is copyright by its respective authors.
+  Templated from msi-laptop.c and thinkpad_acpi.c which is copyright
+  by its respective authors.
 
   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
@@ -39,8 +41,17 @@
  * registers itself in the Linux backlight control subsystem and is
  * available to userspace under /sys/class/backlight/fujitsu-laptop/.
  *
- * This driver has been tested on a Fujitsu Lifebook S7020.  It should
- * work on most P-series and S-series Lifebooks, but YMMV.
+ * Hotkeys present on certain Fujitsu laptops (eg: the S6xxx series) are
+ * also supported by this driver.
+ *
+ * This driver has been tested on a Fujitsu Lifebook S6410 and S7020.  It
+ * should work on most P-series and S-series Lifebooks, but YMMV.
+ *
+ * The module parameter use_alt_lcd_levels switches between different ACPI
+ * brightness controls which are used by different Fujitsu laptops.  In most
+ * cases the correct method is automatically detected. "use_alt_lcd_levels=1"
+ * is applicable for a Fujitsu Lifebook S6410 if autodetection fails.
+ *
  */
 
 #include <linux/module.h>
@@ -49,30 +60,105 @@
 #include <linux/acpi.h>
 #include <linux/dmi.h>
 #include <linux/backlight.h>
+#include <linux/input.h>
+#include <linux/kfifo.h>
+#include <linux/video_output.h>
 #include <linux/platform_device.h>
 
-#define FUJITSU_DRIVER_VERSION "0.3"
+#define FUJITSU_DRIVER_VERSION "0.4.2"
 
 #define FUJITSU_LCD_N_LEVELS 8
 
 #define ACPI_FUJITSU_CLASS              "fujitsu"
 #define ACPI_FUJITSU_HID                "FUJ02B1"
-#define ACPI_FUJITSU_DRIVER_NAME        "Fujitsu laptop FUJ02B1 ACPI extras driver"
+#define ACPI_FUJITSU_DRIVER_NAME        "Fujitsu laptop FUJ02B1 ACPI brightness driver"
 #define ACPI_FUJITSU_DEVICE_NAME        "Fujitsu FUJ02B1"
-
+#define ACPI_FUJITSU_HOTKEY_HID         "FUJ02E3"
+#define ACPI_FUJITSU_HOTKEY_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
+#define ACPI_FUJITSU_HOTKEY_DEVICE_NAME "Fujitsu FUJ02E3"
+
+#define ACPI_FUJITSU_NOTIFY_CODE1     0x80
+
+#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS     0x86
+#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS     0x87
+
+/* Hotkey details */
+#define LOCK_KEY        0x410   /* codes for the keys in the GIRB register */
+#define DISPLAY_KEY     0x411   /* keys are mapped to KEY_SCREENLOCK (the key with the key symbol) */
+#define ENERGY_KEY      0x412   /* KEY_MEDIA (the key with the laptop symbol, KEY_EMAIL (E key)) */
+#define REST_KEY        0x413   /* KEY_SUSPEND (R key) */
+
+#define MAX_HOTKEY_RINGBUFFER_SIZE 100
+#define RINGBUFFERSIZE 40
+
+/* Debugging */
+#define FUJLAPTOP_LOG      ACPI_FUJITSU_HID ": "
+#define FUJLAPTOP_ERR      KERN_ERR FUJLAPTOP_LOG
+#define FUJLAPTOP_NOTICE   KERN_NOTICE FUJLAPTOP_LOG
+#define FUJLAPTOP_INFO     KERN_INFO FUJLAPTOP_LOG
+#define FUJLAPTOP_DEBUG    KERN_DEBUG FUJLAPTOP_LOG
+
+#define FUJLAPTOP_DBG_ALL         0xffff
+#define FUJLAPTOP_DBG_ERROR       0x0001
+#define FUJLAPTOP_DBG_WARN        0x0002
+#define FUJLAPTOP_DBG_INFO        0x0004
+#define FUJLAPTOP_DBG_TRACE       0x0008
+
+#define dbg_printk(a_dbg_level, format, arg...) \
+        do { if (dbg_level & a_dbg_level) \
+                printk(FUJLAPTOP_DEBUG "%s: " format, __func__ , ## arg); \
+        } while (0)
+#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
+#define vdbg_printk(a_dbg_level, format, arg...) \
+        dbg_printk(a_dbg_level, format, ## arg)
+#else
+#define vdbg_printk(a_dbg_level, format, arg...)
+#endif
+
+/* Device controlling the backlight and associated keys */
 struct fujitsu_t {
         acpi_handle acpi_handle;
+        struct acpi_device *dev;
+        struct input_dev *input;
+        char phys[32];
         struct backlight_device *bl_device;
         struct platform_device *pf_device;
 
-        unsigned long fuj02b1_state;
+        unsigned int max_brightness;
         unsigned int brightness_changed;
         unsigned int brightness_level;
 };
 
 static struct fujitsu_t *fujitsu;
+static int use_alt_lcd_levels = -1;
+static int disable_brightness_keys = -1;
+static int disable_brightness_adjust = -1;
+
+/* Device used to access other hotkeys on the laptop */
+struct fujitsu_hotkey_t {
+        acpi_handle acpi_handle;
+        struct acpi_device *dev;
+        struct input_dev *input;
+        char phys[32];
+        struct platform_device *pf_device;
+        struct kfifo *fifo;
+        spinlock_t fifo_lock;
+
+        unsigned int irb;       /* info about the pressed buttons */
+};
 
-/* Hardware access */
+static struct fujitsu_hotkey_t *fujitsu_hotkey;
+
+static void acpi_fujitsu_hotkey_notify(acpi_handle handle, u32 event,
+                                       void *data);
+
+#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
+static u32 dbg_level = 0x03;
+#endif
+
+static void acpi_fujitsu_notify(acpi_handle handle, u32 event, void *data);
+
+/* Hardware access for LCD brightness control */
 
 static int set_lcd_level(int level)
 {
@@ -81,7 +167,10 @@ static int set_lcd_level(int level)
         struct acpi_object_list arg_list = { 1, &arg0 };
         acpi_handle handle = NULL;
 
-        if (level < 0 || level >= FUJITSU_LCD_N_LEVELS)
+        vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
+                    level);
+
+        if (level < 0 || level >= fujitsu->max_brightness)
                 return -EINVAL;
 
         if (!fujitsu)
@@ -89,7 +178,38 @@ static int set_lcd_level(int level)
 
         status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
         if (ACPI_FAILURE(status)) {
-                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "SBLL not present\n"));
+                vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
+                return -ENODEV;
+        }
+
+        arg0.integer.value = level;
+
+        status = acpi_evaluate_object(handle, NULL, &arg_list, NULL);
+        if (ACPI_FAILURE(status))
+                return -ENODEV;
+
+        return 0;
+}
+
+static int set_lcd_level_alt(int level)
+{
+        acpi_status status = AE_OK;
+        union acpi_object arg0 = { ACPI_TYPE_INTEGER };
+        struct acpi_object_list arg_list = { 1, &arg0 };
+        acpi_handle handle = NULL;
+
+        vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
+                    level);
+
+        if (level < 0 || level >= fujitsu->max_brightness)
+                return -EINVAL;
+
+        if (!fujitsu)
+                return -EINVAL;
+
+        status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
+        if (ACPI_FAILURE(status)) {
+                vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
                 return -ENODEV;
         }
 
@@ -107,13 +227,52 @@ static int get_lcd_level(void)
         unsigned long state = 0;
         acpi_status status = AE_OK;
 
-        // Get the Brightness
+        vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
+
         status =
             acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
         if (status < 0)
                 return status;
 
-        fujitsu->fuj02b1_state = state;
+        fujitsu->brightness_level = state & 0x0fffffff;
+
+        if (state & 0x80000000)
+                fujitsu->brightness_changed = 1;
+        else
+                fujitsu->brightness_changed = 0;
+
+        return fujitsu->brightness_level;
+}
+
+static int get_max_brightness(void)
+{
+        unsigned long state = 0;
+        acpi_status status = AE_OK;
+
+        vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
+
+        status =
+            acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state);
+        if (status < 0)
+                return status;
+
+        fujitsu->max_brightness = state;
+
+        return fujitsu->max_brightness;
+}
+
+static int get_lcd_level_alt(void)
+{
+        unsigned long state = 0;
+        acpi_status status = AE_OK;
+
+        vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLS\n");
+
+        status =
+            acpi_evaluate_integer(fujitsu->acpi_handle, "GBLS", NULL, &state);
+        if (status < 0)
+                return status;
+
         fujitsu->brightness_level = state & 0x0fffffff;
 
         if (state & 0x80000000)
@@ -128,12 +287,18 @@ static int get_lcd_level(void)
 
 static int bl_get_brightness(struct backlight_device *b)
 {
-        return get_lcd_level();
+        if (use_alt_lcd_levels)
+                return get_lcd_level_alt();
+        else
+                return get_lcd_level();
 }
 
 static int bl_update_status(struct backlight_device *b)
 {
-        return set_lcd_level(b->props.brightness);
+        if (use_alt_lcd_levels)
+                return set_lcd_level_alt(b->props.brightness);
+        else
+                return set_lcd_level(b->props.brightness);
 }
 
 static struct backlight_ops fujitsubl_ops = {
@@ -141,7 +306,35 @@ static struct backlight_ops fujitsubl_ops = {
         .update_status = bl_update_status,
 };
 
-/* Platform device */
+/* Platform LCD brightness device */
+
+static ssize_t
+show_max_brightness(struct device *dev,
+                    struct device_attribute *attr, char *buf)
+{
+
+        int ret;
+
+        ret = get_max_brightness();
+        if (ret < 0)
+                return ret;
+
+        return sprintf(buf, "%i\n", ret);
+}
+
+static ssize_t
+show_brightness_changed(struct device *dev,
+                        struct device_attribute *attr, char *buf)
+{
+
+        int ret;
+
+        ret = fujitsu->brightness_changed;
+        if (ret < 0)
+                return ret;
+
+        return sprintf(buf, "%i\n", ret);
+}
 
 static ssize_t show_lcd_level(struct device *dev,
                               struct device_attribute *attr, char *buf)
@@ -149,7 +342,10 @@ static ssize_t show_lcd_level(struct device *dev,
 
         int ret;
 
-        ret = get_lcd_level();
+        if (use_alt_lcd_levels)
+                ret = get_lcd_level_alt();
+        else
+                ret = get_lcd_level();
         if (ret < 0)
                 return ret;
 
@@ -164,19 +360,61 @@ static ssize_t store_lcd_level(struct device *dev,
         int level, ret;
 
         if (sscanf(buf, "%i", &level) != 1
-            || (level < 0 || level >= FUJITSU_LCD_N_LEVELS))
+            || (level < 0 || level >= fujitsu->max_brightness))
                 return -EINVAL;
 
-        ret = set_lcd_level(level);
+        if (use_alt_lcd_levels)
+                ret = set_lcd_level_alt(level);
+        else
+                ret = set_lcd_level(level);
+        if (ret < 0)
+                return ret;
+
+        if (use_alt_lcd_levels)
+                ret = get_lcd_level_alt();
+        else
+                ret = get_lcd_level();
         if (ret < 0)
                 return ret;
 
         return count;
 }
 
+/* Hardware access for hotkey device */
+
+static int get_irb(void)
+{
+        unsigned long state = 0;
+        acpi_status status = AE_OK;
+
+        vdbg_printk(FUJLAPTOP_DBG_TRACE, "Get irb\n");
+
+        status =
+            acpi_evaluate_integer(fujitsu_hotkey->acpi_handle, "GIRB", NULL,
+                                  &state);
+        if (status < 0)
+                return status;
+
+        fujitsu_hotkey->irb = state;
+
+        return fujitsu_hotkey->irb;
+}
+
+static ssize_t
+ignore_store(struct device *dev,
+             struct device_attribute *attr, const char *buf, size_t count)
+{
+        return count;
+}
+
+static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
+static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
+                   ignore_store);
 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
 
 static struct attribute *fujitsupf_attributes[] = {
+        &dev_attr_brightness_changed.attr,
+        &dev_attr_max_brightness.attr,
         &dev_attr_lcd_level.attr,
         NULL
 };
@@ -192,14 +430,52 @@ static struct platform_driver fujitsupf_driver = {
                    }
 };
 
-/* ACPI device */
+static int dmi_check_cb_s6410(const struct dmi_system_id *id)
+{
+        acpi_handle handle;
+        int have_blnf;
+        printk(KERN_INFO "fujitsu-laptop: Identified laptop model '%s'.\n",
+               id->ident);
+        have_blnf = ACPI_SUCCESS
+            (acpi_get_handle(NULL, "\\_SB.PCI0.GFX0.LCD.BLNF", &handle));
+        if (use_alt_lcd_levels == -1) {
+                vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detecting usealt\n");
+                use_alt_lcd_levels = 1;
+        }
+        if (disable_brightness_keys == -1) {
+                vdbg_printk(FUJLAPTOP_DBG_TRACE,
+                            "auto-detecting disable_keys\n");
+                disable_brightness_keys = have_blnf ? 1 : 0;
+        }
+        if (disable_brightness_adjust == -1) {
+                vdbg_printk(FUJLAPTOP_DBG_TRACE,
+                            "auto-detecting disable_adjust\n");
+                disable_brightness_adjust = have_blnf ? 0 : 1;
+        }
+        return 0;
+}
+
+static struct dmi_system_id __initdata fujitsu_dmi_table[] = {
+        {
+         .ident = "Fujitsu Siemens",
+         .matches = {
+                     DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+                     DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
+                     },
+         .callback = dmi_check_cb_s6410},
+        {}
+};
+
+/* ACPI device for LCD brightness control */
 
 static int acpi_fujitsu_add(struct acpi_device *device)
 {
+        acpi_status status;
+        acpi_handle handle;
         int result = 0;
         int state = 0;
-
-        ACPI_FUNCTION_TRACE("acpi_fujitsu_add");
+        struct input_dev *input;
+        int error;
 
         if (!device)
                 return -EINVAL;
@@ -209,10 +485,42 @@ static int acpi_fujitsu_add(struct acpi_device *device)
         sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
         acpi_driver_data(device) = fujitsu;
 
+        status = acpi_install_notify_handler(device->handle,
+                                             ACPI_DEVICE_NOTIFY,
+                                             acpi_fujitsu_notify, fujitsu);
+
+        if (ACPI_FAILURE(status)) {
+                printk(KERN_ERR "Error installing notify handler\n");
+                error = -ENODEV;
+                goto err_stop;
+        }
+
+        fujitsu->input = input = input_allocate_device();
+        if (!input) {
+                error = -ENOMEM;
+                goto err_uninstall_notify;
+        }
+
+        snprintf(fujitsu->phys, sizeof(fujitsu->phys),
+                 "%s/video/input0", acpi_device_hid(device));
+
+        input->name = acpi_device_name(device);
+        input->phys = fujitsu->phys;
+        input->id.bustype = BUS_HOST;
+        input->id.product = 0x06;
+        input->dev.parent = &device->dev;
+        input->evbit[0] = BIT(EV_KEY);
+        set_bit(KEY_BRIGHTNESSUP, input->keybit);
+        set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
+        set_bit(KEY_UNKNOWN, input->keybit);
+
+        error = input_register_device(input);
+        if (error)
+                goto err_free_input_dev;
+
         result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
         if (result) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-                                  "Error reading power state\n"));
+                printk(KERN_ERR "Error reading power state\n");
                 goto end;
         }
 
@@ -220,22 +528,373 @@ static int acpi_fujitsu_add(struct acpi_device *device)
                acpi_device_name(device), acpi_device_bid(device),
                !device->power.state ? "on" : "off");
 
-      end:
+        fujitsu->dev = device;
+
+        if (ACPI_SUCCESS
+            (acpi_get_handle(device->handle, METHOD_NAME__INI, &handle))) {
+                vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
+                if (ACPI_FAILURE
+                    (acpi_evaluate_object
+                     (device->handle, METHOD_NAME__INI, NULL, NULL)))
+                        printk(KERN_ERR "_INI Method failed\n");
+        }
+
+        /* do config (detect defaults) */
+        dmi_check_system(fujitsu_dmi_table);
+        use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
+        disable_brightness_keys = disable_brightness_keys == 1 ? 1 : 0;
+        disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
+        vdbg_printk(FUJLAPTOP_DBG_INFO,
+                    "config: [alt interface: %d], [key disable: %d], [adjust disable: %d]\n",
+                    use_alt_lcd_levels, disable_brightness_keys,
+                    disable_brightness_adjust);
+
+        if (get_max_brightness() <= 0)
+                fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
+        if (use_alt_lcd_levels)
+                get_lcd_level_alt();
+        else
+                get_lcd_level();
+
+        return result;
+
+end:
+err_free_input_dev:
+        input_free_device(input);
+err_uninstall_notify:
+        acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
+                                   acpi_fujitsu_notify);
+err_stop:
 
         return result;
 }
 
 static int acpi_fujitsu_remove(struct acpi_device *device, int type)
 {
-        ACPI_FUNCTION_TRACE("acpi_fujitsu_remove");
+        acpi_status status;
+        struct fujitsu_t *fujitsu = NULL;
 
         if (!device || !acpi_driver_data(device))
                 return -EINVAL;
+
+        fujitsu = acpi_driver_data(device);
+
+        status = acpi_remove_notify_handler(fujitsu->acpi_handle,
+                                            ACPI_DEVICE_NOTIFY,
+                                            acpi_fujitsu_notify);
+
+        if (!device || !acpi_driver_data(device))
+                return -EINVAL;
+
         fujitsu->acpi_handle = NULL;
 
         return 0;
 }
 
+/* Brightness notify */
+
+static void acpi_fujitsu_notify(acpi_handle handle, u32 event, void *data)
+{
+        struct input_dev *input;
+        int keycode;
+        int oldb, newb;
+
+        input = fujitsu->input;
+
+        switch (event) {
+        case ACPI_FUJITSU_NOTIFY_CODE1:
+                keycode = 0;
+                oldb = fujitsu->brightness_level;
+                get_lcd_level();  /* the alt version always yields changed */
+                newb = fujitsu->brightness_level;
+
+                vdbg_printk(FUJLAPTOP_DBG_TRACE,
+                            "brightness button event [%i -> %i (%i)]\n",
+                            oldb, newb, fujitsu->brightness_changed);
+
+                if (oldb == newb && fujitsu->brightness_changed) {
+                        keycode = 0;
+                        if (disable_brightness_keys != 1) {
+                                if (oldb == 0) {
+                                        acpi_bus_generate_proc_event(fujitsu->
+                                                dev,
+                                                ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS,
+                                                0);
+                                        keycode = KEY_BRIGHTNESSDOWN;
+                                } else if (oldb ==
+                                           (fujitsu->max_brightness) - 1) {
+                                        acpi_bus_generate_proc_event(fujitsu->
+                                                dev,
+                                                ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS,
+                                                0);
+                                        keycode = KEY_BRIGHTNESSUP;
+                                }
+                        }
+                } else if (oldb < newb) {
+                        if (disable_brightness_adjust != 1) {
+                                if (use_alt_lcd_levels)
+                                        set_lcd_level_alt(newb);
+                                else
+                                        set_lcd_level(newb);
+                        }
+                        if (disable_brightness_keys != 1) {
+                                acpi_bus_generate_proc_event(fujitsu->dev,
+                                        ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS,
+                                        0);
+                                keycode = KEY_BRIGHTNESSUP;
+                        }
+                } else if (oldb > newb) {
+                        if (disable_brightness_adjust != 1) {
+                                if (use_alt_lcd_levels)
+                                        set_lcd_level_alt(newb);
+                                else
+                                        set_lcd_level(newb);
+                        }
+                        if (disable_brightness_keys != 1) {
+                                acpi_bus_generate_proc_event(fujitsu->dev,
+                                        ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS,
+                                        0);
+                                keycode = KEY_BRIGHTNESSDOWN;
+                        }
+                } else {
+                        keycode = KEY_UNKNOWN;
+                }
+                break;
+        default:
+                keycode = KEY_UNKNOWN;
+                vdbg_printk(FUJLAPTOP_DBG_WARN,
+                            "unsupported event [0x%x]\n", event);
+                break;
+        }
+
+        if (keycode != 0) {
+                input_report_key(input, keycode, 1);
+                input_sync(input);
+                input_report_key(input, keycode, 0);
+                input_sync(input);
+        }
+
+        return;
+}
+
+/* ACPI device for hotkey handling */
+
+static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
+{
+        acpi_status status;
+        acpi_handle handle;
+        int result = 0;
+        int state = 0;
+        struct input_dev *input;
+        int error;
+        int i;
+
+        if (!device)
+                return -EINVAL;
+
+        fujitsu_hotkey->acpi_handle = device->handle;
+        sprintf(acpi_device_name(device), "%s",
+                ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
+        sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
+        acpi_driver_data(device) = fujitsu_hotkey;
+
+        status = acpi_install_notify_handler(device->handle,
+                                             ACPI_DEVICE_NOTIFY,
+                                             acpi_fujitsu_hotkey_notify,
+                                             fujitsu_hotkey);
+
+        if (ACPI_FAILURE(status)) {
+                printk(KERN_ERR "Error installing notify handler\n");
+                error = -ENODEV;
+                goto err_stop;
+        }
+
+        /* kfifo */
+        spin_lock_init(&fujitsu_hotkey->fifo_lock);
+        fujitsu_hotkey->fifo =
+            kfifo_alloc(RINGBUFFERSIZE * sizeof(int), GFP_KERNEL,
+                        &fujitsu_hotkey->fifo_lock);
+        if (IS_ERR(fujitsu_hotkey->fifo)) {
+                printk(KERN_ERR "kfifo_alloc failed\n");
+                error = PTR_ERR(fujitsu_hotkey->fifo);
+                goto err_stop;
+        }
+
+        fujitsu_hotkey->input = input = input_allocate_device();
+        if (!input) {
+                error = -ENOMEM;
+                goto err_uninstall_notify;
+        }
+
+        snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
+                 "%s/video/input0", acpi_device_hid(device));
+
+        input->name = acpi_device_name(device);
+        input->phys = fujitsu_hotkey->phys;
+        input->id.bustype = BUS_HOST;
+        input->id.product = 0x06;
+        input->dev.parent = &device->dev;
+        input->evbit[0] = BIT(EV_KEY);
+        set_bit(KEY_SCREENLOCK, input->keybit);
+        set_bit(KEY_MEDIA, input->keybit);
+        set_bit(KEY_EMAIL, input->keybit);
+        set_bit(KEY_SUSPEND, input->keybit);
+        set_bit(KEY_UNKNOWN, input->keybit);
+
+        error = input_register_device(input);
+        if (error)
+                goto err_free_input_dev;
+
+        result = acpi_bus_get_power(fujitsu_hotkey->acpi_handle, &state);
+        if (result) {
+                printk(KERN_ERR "Error reading power state\n");
+                goto end;
+        }
+
+        printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
+               acpi_device_name(device), acpi_device_bid(device),
+               !device->power.state ? "on" : "off");
+
+        fujitsu_hotkey->dev = device;
+
+        if (ACPI_SUCCESS
+            (acpi_get_handle(device->handle, METHOD_NAME__INI, &handle))) {
+                vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
+                if (ACPI_FAILURE
+                    (acpi_evaluate_object
+                     (device->handle, METHOD_NAME__INI, NULL, NULL)))
+                        printk(KERN_ERR "_INI Method failed\n");
+        }
+
+        i = 0;                  /* Discard hotkey ringbuffer */
+        while (get_irb() != 0 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) ;
+        vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
+
+        return result;
+
+end:
+err_free_input_dev:
+        input_free_device(input);
+err_uninstall_notify:
+        acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
+                                   acpi_fujitsu_hotkey_notify);
+        kfifo_free(fujitsu_hotkey->fifo);
+err_stop:
+
+        return result;
+}
+
+static int acpi_fujitsu_hotkey_remove(struct acpi_device *device, int type)
+{
+        acpi_status status;
+        struct fujitsu_hotkey_t *fujitsu_hotkey = NULL;
+
+        if (!device || !acpi_driver_data(device))
+                return -EINVAL;
+
+        fujitsu_hotkey = acpi_driver_data(device);
+
+        status = acpi_remove_notify_handler(fujitsu_hotkey->acpi_handle,
+                                            ACPI_DEVICE_NOTIFY,
+                                            acpi_fujitsu_hotkey_notify);
+
+        fujitsu_hotkey->acpi_handle = NULL;
+
+        kfifo_free(fujitsu_hotkey->fifo);
+
+        return 0;
+}
+
+static void acpi_fujitsu_hotkey_notify(acpi_handle handle, u32 event,
+                                       void *data)
+{
+        struct input_dev *input;
+        int keycode, keycode_r;
+        unsigned int irb = 1;
+        int i, status;
+
+        input = fujitsu_hotkey->input;
+
+        vdbg_printk(FUJLAPTOP_DBG_TRACE, "Hotkey event\n");
+
+        switch (event) {
+        case ACPI_FUJITSU_NOTIFY_CODE1:
+                i = 0;
+                while ((irb = get_irb()) != 0
+                       && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
+                        vdbg_printk(FUJLAPTOP_DBG_TRACE, "GIRB result [%x]\n",
+                                    irb);
+
+                        switch (irb & 0x4ff) {
+                        case LOCK_KEY:
+                                keycode = KEY_SCREENLOCK;
+                                break;
+                        case DISPLAY_KEY:
+                                keycode = KEY_MEDIA;
+                                break;
+                        case ENERGY_KEY:
+                                keycode = KEY_EMAIL;
+                                break;
+                        case REST_KEY:
+                                keycode = KEY_SUSPEND;
+                                break;
+                        case 0:
+                                keycode = 0;
+                                break;
+                        default:
+                                vdbg_printk(FUJLAPTOP_DBG_WARN,
+                                        "Unknown GIRB result [%x]\n", irb);
+                                keycode = -1;
+                                break;
+                        }
+                        if (keycode > 0) {
+                                vdbg_printk(FUJLAPTOP_DBG_TRACE,
+                                        "Push keycode into ringbuffer [%d]\n",
+                                        keycode);
+                                status = kfifo_put(fujitsu_hotkey->fifo,
+                                                (unsigned char *)&keycode,
+                                                sizeof(keycode));
+                                if (status != sizeof(keycode)) {
+                                        vdbg_printk(FUJLAPTOP_DBG_WARN,
+                                                "Could not push keycode [0x%x]\n",
+                                                keycode);
+                                } else {
+                                        input_report_key(input, keycode, 1);
+                                        input_sync(input);
+                                }
+                        } else if (keycode == 0) {
+                                while ((status =
+                                        kfifo_get
+                                        (fujitsu_hotkey->fifo, (unsigned char *)
+                                         &keycode_r,
+                                         sizeof
+                                         (keycode_r))) == sizeof(keycode_r)) {
+                                        input_report_key(input, keycode_r, 0);
+                                        input_sync(input);
+                                        vdbg_printk(FUJLAPTOP_DBG_TRACE,
+                                                    "Pop keycode from ringbuffer [%d]\n",
+                                                    keycode_r);
+                                }
+                        }
+                }
+
+                break;
+        default:
+                keycode = KEY_UNKNOWN;
+                vdbg_printk(FUJLAPTOP_DBG_WARN,
+                            "Unsupported event [0x%x]\n", event);
+                input_report_key(input, keycode, 1);
+                input_sync(input);
+                input_report_key(input, keycode, 0);
+                input_sync(input);
+                break;
+        }
+
+        return;
+}
+
+/* Initialization */
+
 static const struct acpi_device_id fujitsu_device_ids[] = {
         {ACPI_FUJITSU_HID, 0},
         {"", 0},
@@ -251,11 +910,24 @@ static struct acpi_driver acpi_fujitsu_driver = {
                 },
 };
 
-/* Initialization */
+static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
+        {ACPI_FUJITSU_HOTKEY_HID, 0},
+        {"", 0},
+};
+
+static struct acpi_driver acpi_fujitsu_hotkey_driver = {
+        .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
+        .class = ACPI_FUJITSU_CLASS,
+        .ids = fujitsu_hotkey_device_ids,
+        .ops = {
+                .add = acpi_fujitsu_hotkey_add,
+                .remove = acpi_fujitsu_hotkey_remove,
+                },
+};
 
 static int __init fujitsu_init(void)
 {
-        int ret, result;
+        int ret, result, max_brightness;
 
         if (acpi_disabled)
                 return -ENODEV;
@@ -271,19 +943,6 @@ static int __init fujitsu_init(void)
                 goto fail_acpi;
         }
 
-        /* Register backlight stuff */
-
-        fujitsu->bl_device =
-            backlight_device_register("fujitsu-laptop", NULL, NULL,
-                                      &fujitsubl_ops);
-        if (IS_ERR(fujitsu->bl_device))
-                return PTR_ERR(fujitsu->bl_device);
-
-        fujitsu->bl_device->props.max_brightness = FUJITSU_LCD_N_LEVELS - 1;
-        ret = platform_driver_register(&fujitsupf_driver);
-        if (ret)
-                goto fail_backlight;
-
         /* Register platform stuff */
 
         fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
@@ -302,28 +961,68 @@ static int __init fujitsu_init(void)
         if (ret)
                 goto fail_platform_device2;
 
+        /* Register backlight stuff */
+
+        fujitsu->bl_device =
+            backlight_device_register("fujitsu-laptop", NULL, NULL,
+                                      &fujitsubl_ops);
+        if (IS_ERR(fujitsu->bl_device))
+                return PTR_ERR(fujitsu->bl_device);
+
+        max_brightness = fujitsu->max_brightness;
+
+        fujitsu->bl_device->props.max_brightness = max_brightness - 1;
+        fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
+
+        ret = platform_driver_register(&fujitsupf_driver);
+        if (ret)
+                goto fail_backlight;
+
+        /* Register hotkey driver */
+
+        fujitsu_hotkey = kmalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
+        if (!fujitsu_hotkey) {
+                ret = -ENOMEM;
+                goto fail_hotkey;
+        }
+        memset(fujitsu_hotkey, 0, sizeof(struct fujitsu_hotkey_t));
+
+        result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
+        if (result < 0) {
+                ret = -ENODEV;
+                goto fail_hotkey1;
+        }
+
         printk(KERN_INFO "fujitsu-laptop: driver " FUJITSU_DRIVER_VERSION
                " successfully loaded.\n");
 
         return 0;
 
-      fail_platform_device2:
+fail_hotkey1:
 
-        platform_device_del(fujitsu->pf_device);
-
-      fail_platform_device1:
-
-        platform_device_put(fujitsu->pf_device);
+        kfree(fujitsu_hotkey);
 
-      fail_platform_driver:
+fail_hotkey:
 
         platform_driver_unregister(&fujitsupf_driver);
 
-      fail_backlight:
+fail_backlight:
 
         backlight_device_unregister(fujitsu->bl_device);
 
-      fail_acpi:
+fail_platform_device2:
+
+        platform_device_del(fujitsu->pf_device);
+
+fail_platform_device1:
+
+        platform_device_put(fujitsu->pf_device);
+
+fail_platform_driver:
+
+        acpi_bus_unregister_driver(&acpi_fujitsu_driver);
+
+fail_acpi:
 
         kfree(fujitsu);
 
@@ -342,19 +1041,43 @@ static void __exit fujitsu_cleanup(void)
 
         kfree(fujitsu);
 
+        acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
+
+        kfree(fujitsu_hotkey);
+
         printk(KERN_INFO "fujitsu-laptop: driver unloaded.\n");
 }
 
 module_init(fujitsu_init);
 module_exit(fujitsu_cleanup);
 
-MODULE_AUTHOR("Jonathan Woithe");
+module_param(use_alt_lcd_levels, uint, 0644);
+MODULE_PARM_DESC(use_alt_lcd_levels,
+                 "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
+module_param(disable_brightness_keys, uint, 0644);
+MODULE_PARM_DESC(disable_brightness_keys,
+                 "Disable brightness keys (eg. if they are already handled by the generic ACPI_VIDEO device).");
+module_param(disable_brightness_adjust, uint, 0644);
+MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
+#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
+module_param_named(debug, dbg_level, uint, 0644);
+MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
+#endif
+
+MODULE_AUTHOR("Jonathan Woithe, Peter Gruber");
 MODULE_DESCRIPTION("Fujitsu laptop extras support");
 MODULE_VERSION(FUJITSU_DRIVER_VERSION);
 MODULE_LICENSE("GPL");
 
+MODULE_ALIAS
+    ("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
+MODULE_ALIAS
+    ("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
+
 static struct pnp_device_id pnp_ids[] = {
         { .id = "FUJ02bf" },
+        { .id = "FUJ02B1" },
+        { .id = "FUJ02E3" },
         { .id = "" }
 };
 MODULE_DEVICE_TABLE(pnp, pnp_ids);