Merge tag 'platform-drivers-x86-v4.3-1' of git://git.infradead.org/users/dvhart/linux...
authorLinus Torvalds <torvalds@linux-foundation.org>
Tue, 8 Sep 2015 23:26:18 +0000 (16:26 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 8 Sep 2015 23:26:18 +0000 (16:26 -0700)
Pull x86 platform driver updates from Darren Hart:
 "Significant work on toshiba_acpi, including new hardware support,
  refactoring, and cleanups.  Extend device support for asus, ideapad,
  and acer systems.  New surface pro 3 buttons driver.  Misc minor
  cleanups for thinkpad and hp-wireless.

  acer-wmi:
   - No rfkill on HP Omen 15 wifi

  thinkpad_acpi:
   - Remove side effects from vdbg_printk -> no_printk macro

  surface pro 3:
   - Add support driver for Surface Pro 3 buttons

  hp-wireless:
   - remove unneeded goto/label in hpwl_init

  ideapad-laptop:
   - add alternative representation for Yoga 2 to DMI table
   - Add Lenovo Yoga 3 14 to no_hw_rfkill dmi list

  asus-laptop:
   - Add key found on Asus F3M

  MAINTAINERS:
   - Remove Toshiba Linux mailing list address

  toshiba_acpi:
   - Bump driver version to 0.23
   - Remove unnecessary checks and returns in HCI/SCI functions
   - Refactor *{get, set} functions return value
   - Remove "*not supported" feature prints
   - Change *available functions return type
   - Add set_fan_status function
   - Change some variables to avoid warnings from ninja-check
   - Reorder toshiba_acpi_alt_keymap entries
   - Remove unused wireless defines
   - Transflective backlight updates
   - Avoid registering input device on WMI event laptops
   - Add /dev/toshiba_acpi device
   - Adapt /proc/acpi/toshiba/keys to TOS1900 devices"

* tag 'platform-drivers-x86-v4.3-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: (21 commits)
  acer-wmi: No rfkill on HP Omen 15 wifi
  thinkpad_acpi: Remove side effects from vdbg_printk -> no_printk macro
  surface pro 3: Add support driver for Surface Pro 3 buttons
  hp-wireless: remove unneeded goto/label in hpwl_init
  ideapad-laptop: add alternative representation for Yoga 2 to DMI table
  asus-laptop: Add key found on Asus F3M
  MAINTAINERS: Remove Toshiba Linux mailing list address
  ideapad-laptop: Add Lenovo Yoga 3 14 to no_hw_rfkill dmi list
  toshiba_acpi: Bump driver version to 0.23
  toshiba_acpi: Remove unnecessary checks and returns in HCI/SCI functions
  toshiba_acpi: Refactor *{get, set} functions return value
  toshiba_acpi: Remove "*not supported" feature prints
  toshiba_acpi: Change *available functions return type
  toshiba_acpi: Add set_fan_status function
  toshiba_acpi: Change some variables to avoid warnings from ninja-check
  toshiba_acpi: Reorder toshiba_acpi_alt_keymap entries
  toshiba_acpi: Remove unused wireless defines
  toshiba_acpi: Transflective backlight updates
  toshiba_acpi: Avoid registering input device on WMI event laptops
  toshiba_acpi: Add /dev/toshiba_acpi device
  ...

12 files changed:
Documentation/ioctl/ioctl-number.txt
MAINTAINERS
drivers/platform/x86/Kconfig
drivers/platform/x86/Makefile
drivers/platform/x86/acer-wmi.c
drivers/platform/x86/asus-laptop.c
drivers/platform/x86/hp-wireless.c
drivers/platform/x86/ideapad-laptop.c
drivers/platform/x86/surfacepro3_button.c [new file with mode: 0644]
drivers/platform/x86/thinkpad_acpi.c
drivers/platform/x86/toshiba_acpi.c
include/uapi/linux/toshiba.h

index 39ac654..df1b25e 100644 (file)
@@ -265,7 +265,7 @@ Code  Seq#(hex)     Include File            Comments
 's'    all     linux/cdk.h
 't'    00-7F   linux/ppp-ioctl.h
 't'    80-8F   linux/isdn_ppp.h
-'t'    90      linux/toshiba.h
+'t'    90-91   linux/toshiba.h         toshiba and toshiba_acpi SMM
 'u'    00-1F   linux/smb_fs.h          gone
 'u'    20-3F   linux/uvcvideo.h        USB video class host driver
 'v'    00-1F   linux/ext2_fs.h         conflict!
index 8277838..8bd7808 100644 (file)
@@ -6847,6 +6847,12 @@ T:       git git://git.monstr.eu/linux-2.6-microblaze.git
 S:     Supported
 F:     arch/microblaze/
 
+MICROSOFT SURFACE PRO 3 BUTTON DRIVER
+M:     Chen Yu <yu.c.chen@intel.com>
+L:     platform-driver-x86@vger.kernel.org
+S:     Supported
+F:     drivers/platform/x86/surfacepro3_button.c
+
 MICROTEK X6 SCANNER
 M:     Oliver Neukum <oliver@neukum.org>
 S:     Maintained
@@ -10489,7 +10495,6 @@ F:      drivers/platform/x86/toshiba_haps.c
 
 TOSHIBA SMM DRIVER
 M:     Jonathan Buzzard <jonathan@buzzard.org.uk>
-L:     tlinux-users@tce.toshiba-dme.co.jp
 W:     http://www.buzzard.org.uk/toshiba/
 S:     Maintained
 F:     drivers/char/toshiba.c
index 6dc13e4..c69bb70 100644 (file)
@@ -919,4 +919,9 @@ config INTEL_PMC_IPC
        The PMC is an ARC processor which defines IPC commands for communication
        with other entities in the CPU.
 
+config SURFACE_PRO3_BUTTON
+       tristate "Power/home/volume buttons driver for Microsoft Surface Pro 3 tablet"
+       depends on ACPI && INPUT
+       ---help---
+         This driver handles the power/home/volume buttons on the Microsoft Surface Pro 3 tablet.
 endif # X86_PLATFORM_DEVICES
index dda95a9..ada5128 100644 (file)
@@ -60,3 +60,4 @@ obj-$(CONFIG_INTEL_SMARTCONNECT)      += intel-smartconnect.o
 obj-$(CONFIG_PVPANIC)           += pvpanic.o
 obj-$(CONFIG_ALIENWARE_WMI)    += alienware-wmi.o
 obj-$(CONFIG_INTEL_PMC_IPC)    += intel_pmc_ipc.o
+obj-$(CONFIG_SURFACE_PRO3_BUTTON)      += surfacepro3_button.o
index f6b280d..d773b9d 100644 (file)
@@ -807,6 +807,7 @@ static const struct acpi_device_id norfkill_ids[] __initconst = {
        { "IBM0068", 0},
        { "LEN0068", 0},
        { "SNY5001", 0},        /* sony-laptop in charge */
+       { "HPQ6601", 0},
        { "", 0},
 };
 
index 58d29c4..f2b5d0a 100644 (file)
@@ -332,6 +332,7 @@ static const struct key_entry asus_keymap[] = {
        {KE_KEY, 0x65, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV */
        {KE_KEY, 0x66, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV */
        {KE_KEY, 0x67, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV */
+       {KE_KEY, 0x6A, { KEY_TOUCHPAD_TOGGLE } }, /* Lock Touchpad Fn + F9 */
        {KE_KEY, 0x6B, { KEY_TOUCHPAD_TOGGLE } }, /* Lock Touchpad */
        {KE_KEY, 0x6C, { KEY_SLEEP } }, /* Suspend */
        {KE_KEY, 0x6D, { KEY_SLEEP } }, /* Hibernate */
index 4e4cc8b..988eedb 100644 (file)
@@ -114,14 +114,9 @@ static int __init hpwl_init(void)
 
        pr_info("Initializing HPQ6001 module\n");
        err = acpi_bus_register_driver(&hpwl_driver);
-       if (err) {
+       if (err)
                pr_err("Unable to register HP wireless control driver.\n");
-               goto error_acpi_register;
-       }
-
-       return 0;
 
-error_acpi_register:
        return err;
 }
 
index 76b5738..fce49f3 100644 (file)
@@ -852,6 +852,20 @@ static const struct dmi_system_id no_hw_rfkill_list[] = {
                        DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 2"),
                },
        },
+       {
+               .ident = "Lenovo Yoga 3 14",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+                       DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 3 14"),
+               },
+       },
+       {
+               .ident = "Lenovo Yoga 2 11 / 13 / Pro",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+                       DMI_MATCH(DMI_BOARD_NAME, "Yoga2"),
+               },
+       },
        {
                .ident = "Lenovo Yoga 3 Pro 1370",
                .matches = {
diff --git a/drivers/platform/x86/surfacepro3_button.c b/drivers/platform/x86/surfacepro3_button.c
new file mode 100644 (file)
index 0000000..f7dade3
--- /dev/null
@@ -0,0 +1,216 @@
+/*
+ * power/home/volume button support for
+ * Microsoft Surface Pro 3 tablet.
+ *
+ * Copyright (c) 2015 Intel Corporation.
+ * All rights reserved.
+ *
+ * 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 the Free Software Foundation; version 2
+ * of the License.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/input.h>
+#include <linux/acpi.h>
+#include <acpi/button.h>
+
+#define SURFACE_BUTTON_HID             "MSHW0028"
+#define SURFACE_BUTTON_OBJ_NAME                "VGBI"
+#define SURFACE_BUTTON_DEVICE_NAME     "Surface Pro 3 Buttons"
+
+#define SURFACE_BUTTON_NOTIFY_PRESS_POWER      0xc6
+#define SURFACE_BUTTON_NOTIFY_RELEASE_POWER    0xc7
+
+#define SURFACE_BUTTON_NOTIFY_PRESS_HOME       0xc4
+#define SURFACE_BUTTON_NOTIFY_RELEASE_HOME     0xc5
+
+#define SURFACE_BUTTON_NOTIFY_PRESS_VOLUME_UP  0xc0
+#define SURFACE_BUTTON_NOTIFY_RELEASE_VOLUME_UP        0xc1
+
+#define SURFACE_BUTTON_NOTIFY_PRESS_VOLUME_DOWN        0xc2
+#define SURFACE_BUTTON_NOTIFY_RELEASE_VOLUME_DOWN      0xc3
+
+ACPI_MODULE_NAME("surface pro 3 button");
+
+MODULE_AUTHOR("Chen Yu");
+MODULE_DESCRIPTION("Surface Pro3 Button Driver");
+MODULE_LICENSE("GPL v2");
+
+/*
+ * Power button, Home button, Volume buttons support is supposed to
+ * be covered by drivers/input/misc/soc_button_array.c, which is implemented
+ * according to "Windows ACPI Design Guide for SoC Platforms".
+ * However surface pro3 seems not to obey the specs, instead it uses
+ * device VGBI(MSHW0028) for dispatching the events.
+ * We choose acpi_driver rather than platform_driver/i2c_driver because
+ * although VGBI has an i2c resource connected to i2c controller, it
+ * is not embedded in any i2c controller's scope, thus neither platform_device
+ * will be created, nor i2c_client will be enumerated, we have to use
+ * acpi_driver.
+ */
+static const struct acpi_device_id surface_button_device_ids[] = {
+       {SURFACE_BUTTON_HID,    0},
+       {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, surface_button_device_ids);
+
+struct surface_button {
+       unsigned int type;
+       struct input_dev *input;
+       char phys[32];                  /* for input device */
+       unsigned long pushed;
+       bool suspended;
+};
+
+static void surface_button_notify(struct acpi_device *device, u32 event)
+{
+       struct surface_button *button = acpi_driver_data(device);
+       struct input_dev *input;
+       int key_code = KEY_RESERVED;
+       bool pressed = false;
+
+       switch (event) {
+       /* Power button press,release handle */
+       case SURFACE_BUTTON_NOTIFY_PRESS_POWER:
+               pressed = true;
+               /*fall through*/
+       case SURFACE_BUTTON_NOTIFY_RELEASE_POWER:
+               key_code = KEY_POWER;
+               break;
+       /* Home button press,release handle */
+       case SURFACE_BUTTON_NOTIFY_PRESS_HOME:
+               pressed = true;
+               /*fall through*/
+       case SURFACE_BUTTON_NOTIFY_RELEASE_HOME:
+               key_code = KEY_LEFTMETA;
+               break;
+       /* Volume up button press,release handle */
+       case SURFACE_BUTTON_NOTIFY_PRESS_VOLUME_UP:
+               pressed = true;
+               /*fall through*/
+       case SURFACE_BUTTON_NOTIFY_RELEASE_VOLUME_UP:
+               key_code = KEY_VOLUMEUP;
+               break;
+       /* Volume down button press,release handle */
+       case SURFACE_BUTTON_NOTIFY_PRESS_VOLUME_DOWN:
+               pressed = true;
+               /*fall through*/
+       case SURFACE_BUTTON_NOTIFY_RELEASE_VOLUME_DOWN:
+               key_code = KEY_VOLUMEDOWN;
+               break;
+       default:
+               dev_info_ratelimited(&device->dev,
+                                 "Unsupported event [0x%x]\n", event);
+               break;
+       }
+       input = button->input;
+       if (KEY_RESERVED == key_code)
+               return;
+       if (pressed)
+               pm_wakeup_event(&device->dev, 0);
+       if (button->suspended)
+               return;
+       input_report_key(input, key_code, pressed?1:0);
+       input_sync(input);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int surface_button_suspend(struct device *dev)
+{
+       struct acpi_device *device = to_acpi_device(dev);
+       struct surface_button *button = acpi_driver_data(device);
+
+       button->suspended = true;
+       return 0;
+}
+
+static int surface_button_resume(struct device *dev)
+{
+       struct acpi_device *device = to_acpi_device(dev);
+       struct surface_button *button = acpi_driver_data(device);
+
+       button->suspended = false;
+       return 0;
+}
+#endif
+
+static int surface_button_add(struct acpi_device *device)
+{
+       struct surface_button *button;
+       struct input_dev *input;
+       const char *hid = acpi_device_hid(device);
+       char *name;
+       int error;
+
+       if (strncmp(acpi_device_bid(device), SURFACE_BUTTON_OBJ_NAME,
+           strlen(SURFACE_BUTTON_OBJ_NAME)))
+               return -ENODEV;
+
+       button = kzalloc(sizeof(struct surface_button), GFP_KERNEL);
+       if (!button)
+               return -ENOMEM;
+
+       device->driver_data = button;
+       button->input = input = input_allocate_device();
+       if (!input) {
+               error = -ENOMEM;
+               goto err_free_button;
+       }
+
+       name = acpi_device_name(device);
+       strcpy(name, SURFACE_BUTTON_DEVICE_NAME);
+       snprintf(button->phys, sizeof(button->phys), "%s/buttons", hid);
+
+       input->name = name;
+       input->phys = button->phys;
+       input->id.bustype = BUS_HOST;
+       input->dev.parent = &device->dev;
+       input_set_capability(input, EV_KEY, KEY_POWER);
+       input_set_capability(input, EV_KEY, KEY_LEFTMETA);
+       input_set_capability(input, EV_KEY, KEY_VOLUMEUP);
+       input_set_capability(input, EV_KEY, KEY_VOLUMEDOWN);
+
+       error = input_register_device(input);
+       if (error)
+               goto err_free_input;
+       dev_info(&device->dev,
+                       "%s [%s]\n", name, acpi_device_bid(device));
+       return 0;
+
+ err_free_input:
+       input_free_device(input);
+ err_free_button:
+       kfree(button);
+       return error;
+}
+
+static int surface_button_remove(struct acpi_device *device)
+{
+       struct surface_button *button = acpi_driver_data(device);
+
+       input_unregister_device(button->input);
+       kfree(button);
+       return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(surface_button_pm,
+               surface_button_suspend, surface_button_resume);
+
+static struct acpi_driver surface_button_driver = {
+       .name = "surface_pro3_button",
+       .class = "SurfacePro3",
+       .ids = surface_button_device_ids,
+       .ops = {
+               .add = surface_button_add,
+               .remove = surface_button_remove,
+               .notify = surface_button_notify,
+       },
+       .drv.pm = &surface_button_pm,
+};
+
+module_acpi_driver(surface_button_driver);
index 33e488c..131dd74 100644 (file)
@@ -402,7 +402,7 @@ static const char *str_supported(int is_supported);
 #else
 static inline const char *str_supported(int is_supported) { return ""; }
 #define vdbg_printk(a_dbg_level, format, arg...)       \
-       no_printk(format, ##arg)
+       do { if (0) no_printk(format, ##arg); } while (0)
 #endif
 
 static void tpacpi_log_usertask(const char * const what)
index 3ad7b1f..6740c51 100644 (file)
@@ -31,7 +31,7 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
-#define TOSHIBA_ACPI_VERSION   "0.22"
+#define TOSHIBA_ACPI_VERSION   "0.23"
 #define PROC_INTERFACE_VERSION 1
 
 #include <linux/kernel.h>
@@ -50,6 +50,8 @@
 #include <linux/acpi.h>
 #include <linux/dmi.h>
 #include <linux/uaccess.h>
+#include <linux/miscdevice.h>
+#include <linux/toshiba.h>
 #include <acpi/video.h>
 
 MODULE_AUTHOR("John Belmonte");
@@ -91,6 +93,7 @@ MODULE_LICENSE("GPL");
 
 /* Return codes */
 #define TOS_SUCCESS                    0x0000
+#define TOS_SUCCESS2                   0x0001
 #define TOS_OPEN_CLOSE_OK              0x0044
 #define TOS_FAILURE                    0x1000
 #define TOS_NOT_SUPPORTED              0x8000
@@ -111,7 +114,6 @@ MODULE_LICENSE("GPL");
 #define HCI_VIDEO_OUT                  0x001c
 #define HCI_HOTKEY_EVENT               0x001e
 #define HCI_LCD_BRIGHTNESS             0x002a
-#define HCI_WIRELESS                   0x0056
 #define HCI_ACCELEROMETER              0x006d
 #define HCI_KBD_ILLUMINATION           0x0095
 #define HCI_ECO_MODE                   0x0097
@@ -140,10 +142,6 @@ MODULE_LICENSE("GPL");
 #define HCI_VIDEO_OUT_LCD              0x1
 #define HCI_VIDEO_OUT_CRT              0x2
 #define HCI_VIDEO_OUT_TV               0x4
-#define HCI_WIRELESS_KILL_SWITCH       0x01
-#define HCI_WIRELESS_BT_PRESENT                0x0f
-#define HCI_WIRELESS_BT_ATTACH         0x40
-#define HCI_WIRELESS_BT_POWER          0x80
 #define SCI_KBD_MODE_MASK              0x1f
 #define SCI_KBD_MODE_FNZ               0x1
 #define SCI_KBD_MODE_AUTO              0x2
@@ -170,6 +168,7 @@ struct toshiba_acpi_dev {
        struct led_classdev led_dev;
        struct led_classdev kbd_led;
        struct led_classdev eco_led;
+       struct miscdevice miscdev;
 
        int force_fan;
        int last_key_event;
@@ -189,7 +188,6 @@ struct toshiba_acpi_dev {
        unsigned int info_supported:1;
        unsigned int tr_backlight_supported:1;
        unsigned int kbd_illum_supported:1;
-       unsigned int kbd_led_registered:1;
        unsigned int touchpad_supported:1;
        unsigned int eco_supported:1;
        unsigned int accelerometer_supported:1;
@@ -200,6 +198,10 @@ struct toshiba_acpi_dev {
        unsigned int panel_power_on_supported:1;
        unsigned int usb_three_supported:1;
        unsigned int sysfs_created:1;
+
+       bool kbd_led_registered;
+       bool illumination_led_registered;
+       bool eco_led_registered;
 };
 
 static struct toshiba_acpi_dev *toshiba_acpi;
@@ -248,16 +250,16 @@ static const struct key_entry toshiba_acpi_keymap[] = {
 };
 
 static const struct key_entry toshiba_acpi_alt_keymap[] = {
-       { KE_KEY, 0x157, { KEY_MUTE } },
        { KE_KEY, 0x102, { KEY_ZOOMOUT } },
        { KE_KEY, 0x103, { KEY_ZOOMIN } },
        { KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
        { KE_KEY, 0x139, { KEY_ZOOMRESET } },
-       { KE_KEY, 0x13e, { KEY_SWITCHVIDEOMODE } },
        { KE_KEY, 0x13c, { KEY_BRIGHTNESSDOWN } },
        { KE_KEY, 0x13d, { KEY_BRIGHTNESSUP } },
-       { KE_KEY, 0x158, { KEY_WLAN } },
+       { KE_KEY, 0x13e, { KEY_SWITCHVIDEOMODE } },
        { KE_KEY, 0x13f, { KEY_TOUCHPAD_TOGGLE } },
+       { KE_KEY, 0x157, { KEY_MUTE } },
+       { KE_KEY, 0x158, { KEY_WLAN } },
        { KE_END, 0 },
 };
 
@@ -441,26 +443,24 @@ static u32 sci_write(struct toshiba_acpi_dev *dev, u32 reg, u32 in1)
 }
 
 /* Illumination support */
-static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
+static void toshiba_illumination_available(struct toshiba_acpi_dev *dev)
 {
        u32 in[TCI_WORDS] = { SCI_GET, SCI_ILLUMINATION, 0, 0, 0, 0 };
        u32 out[TCI_WORDS];
        acpi_status status;
 
+       dev->illumination_supported = 0;
+       dev->illumination_led_registered = false;
+
        if (!sci_open(dev))
-               return 0;
+               return;
 
        status = tci_raw(dev, in, out);
        sci_close(dev);
-       if (ACPI_FAILURE(status)) {
+       if (ACPI_FAILURE(status))
                pr_err("ACPI call to query Illumination support failed\n");
-               return 0;
-       } else if (out[0] == TOS_NOT_SUPPORTED) {
-               pr_info("Illumination device not available\n");
-               return 0;
-       }
-
-       return 1;
+       else if (out[0] == TOS_SUCCESS)
+               dev->illumination_supported = 1;
 }
 
 static void toshiba_illumination_set(struct led_classdev *cdev,
@@ -468,7 +468,8 @@ static void toshiba_illumination_set(struct led_classdev *cdev,
 {
        struct toshiba_acpi_dev *dev = container_of(cdev,
                        struct toshiba_acpi_dev, led_dev);
-       u32 state, result;
+       u32 result;
+       u32 state;
 
        /* First request : initialize communication. */
        if (!sci_open(dev))
@@ -478,13 +479,8 @@ static void toshiba_illumination_set(struct led_classdev *cdev,
        state = brightness ? 1 : 0;
        result = sci_write(dev, SCI_ILLUMINATION, state);
        sci_close(dev);
-       if (result == TOS_FAILURE) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call for illumination failed\n");
-               return;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("Illumination not supported\n");
-               return;
-       }
 }
 
 static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
@@ -500,11 +496,10 @@ static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
        /* Check the illumination */
        result = sci_read(dev, SCI_ILLUMINATION, &state);
        sci_close(dev);
-       if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+       if (result == TOS_FAILURE) {
                pr_err("ACPI call for illumination failed\n");
                return LED_OFF;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("Illumination not supported\n");
+       } else if (result != TOS_SUCCESS) {
                return LED_OFF;
        }
 
@@ -512,41 +507,40 @@ static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
 }
 
 /* KBD Illumination */
-static int toshiba_kbd_illum_available(struct toshiba_acpi_dev *dev)
+static void toshiba_kbd_illum_available(struct toshiba_acpi_dev *dev)
 {
        u32 in[TCI_WORDS] = { SCI_GET, SCI_KBD_ILLUM_STATUS, 0, 0, 0, 0 };
        u32 out[TCI_WORDS];
        acpi_status status;
 
+       dev->kbd_illum_supported = 0;
+       dev->kbd_led_registered = false;
+
        if (!sci_open(dev))
-               return 0;
+               return;
 
        status = tci_raw(dev, in, out);
        sci_close(dev);
-       if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
+       if (ACPI_FAILURE(status)) {
                pr_err("ACPI call to query kbd illumination support failed\n");
-               return 0;
-       } else if (out[0] == TOS_NOT_SUPPORTED) {
-               pr_info("Keyboard illumination not available\n");
-               return 0;
+       } else if (out[0] == TOS_SUCCESS) {
+               /*
+                * Check for keyboard backlight timeout max value,
+                * previous kbd backlight implementation set this to
+                * 0x3c0003, and now the new implementation set this
+                * to 0x3c001a, use this to distinguish between them.
+                */
+               if (out[3] == SCI_KBD_TIME_MAX)
+                       dev->kbd_type = 2;
+               else
+                       dev->kbd_type = 1;
+               /* Get the current keyboard backlight mode */
+               dev->kbd_mode = out[2] & SCI_KBD_MODE_MASK;
+               /* Get the current time (1-60 seconds) */
+               dev->kbd_time = out[2] >> HCI_MISC_SHIFT;
+               /* Flag as supported */
+               dev->kbd_illum_supported = 1;
        }
-
-       /*
-        * Check for keyboard backlight timeout max value,
-        * previous kbd backlight implementation set this to
-        * 0x3c0003, and now the new implementation set this
-        * to 0x3c001a, use this to distinguish between them.
-        */
-       if (out[3] == SCI_KBD_TIME_MAX)
-               dev->kbd_type = 2;
-       else
-               dev->kbd_type = 1;
-       /* Get the current keyboard backlight mode */
-       dev->kbd_mode = out[2] & SCI_KBD_MODE_MASK;
-       /* Get the current time (1-60 seconds) */
-       dev->kbd_time = out[2] >> HCI_MISC_SHIFT;
-
-       return 1;
 }
 
 static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
@@ -558,15 +552,12 @@ static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time)
 
        result = sci_write(dev, SCI_KBD_ILLUM_STATUS, time);
        sci_close(dev);
-       if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to set KBD backlight status failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("Keyboard backlight status not supported\n");
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       }
 
-       return 0;
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
@@ -578,30 +569,27 @@ static int toshiba_kbd_illum_status_get(struct toshiba_acpi_dev *dev, u32 *time)
 
        result = sci_read(dev, SCI_KBD_ILLUM_STATUS, time);
        sci_close(dev);
-       if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to get KBD backlight status failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("Keyboard backlight status not supported\n");
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       }
 
-       return 0;
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static enum led_brightness toshiba_kbd_backlight_get(struct led_classdev *cdev)
 {
        struct toshiba_acpi_dev *dev = container_of(cdev,
                        struct toshiba_acpi_dev, kbd_led);
-       u32 state, result;
+       u32 result;
+       u32 state;
 
        /* Check the keyboard backlight state */
        result = hci_read(dev, HCI_KBD_ILLUMINATION, &state);
-       if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+       if (result == TOS_FAILURE) {
                pr_err("ACPI call to get the keyboard backlight failed\n");
                return LED_OFF;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("Keyboard backlight not supported\n");
+       } else if (result != TOS_SUCCESS) {
                return LED_OFF;
        }
 
@@ -613,18 +601,14 @@ static void toshiba_kbd_backlight_set(struct led_classdev *cdev,
 {
        struct toshiba_acpi_dev *dev = container_of(cdev,
                        struct toshiba_acpi_dev, kbd_led);
-       u32 state, result;
+       u32 result;
+       u32 state;
 
        /* Set the keyboard backlight state */
        state = brightness ? 1 : 0;
        result = hci_write(dev, HCI_KBD_ILLUMINATION, state);
-       if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to set KBD Illumination mode failed\n");
-               return;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("Keyboard backlight not supported\n");
-               return;
-       }
 }
 
 /* TouchPad support */
@@ -637,14 +621,12 @@ static int toshiba_touchpad_set(struct toshiba_acpi_dev *dev, u32 state)
 
        result = sci_write(dev, SCI_TOUCHPAD, state);
        sci_close(dev);
-       if (result == TOS_FAILURE) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to set the touchpad failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       }
 
-       return 0;
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
@@ -656,28 +638,27 @@ static int toshiba_touchpad_get(struct toshiba_acpi_dev *dev, u32 *state)
 
        result = sci_read(dev, SCI_TOUCHPAD, state);
        sci_close(dev);
-       if (result == TOS_FAILURE) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to query the touchpad failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       }
 
-       return 0;
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 /* Eco Mode support */
-static int toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
+static void toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
 {
        acpi_status status;
        u32 in[TCI_WORDS] = { HCI_GET, HCI_ECO_MODE, 0, 0, 0, 0 };
        u32 out[TCI_WORDS];
 
+       dev->eco_supported = 0;
+       dev->eco_led_registered = false;
+
        status = tci_raw(dev, in, out);
        if (ACPI_FAILURE(status)) {
                pr_err("ACPI call to get ECO led failed\n");
-       } else if (out[0] == TOS_NOT_INSTALLED) {
-               pr_info("ECO led not installed");
        } else if (out[0] == TOS_INPUT_DATA_ERROR) {
                /*
                 * If we receive 0x8300 (Input Data Error), it means that the
@@ -690,13 +671,11 @@ static int toshiba_eco_mode_available(struct toshiba_acpi_dev *dev)
                 */
                in[3] = 1;
                status = tci_raw(dev, in, out);
-               if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE)
+               if (ACPI_FAILURE(status))
                        pr_err("ACPI call to get ECO led failed\n");
                else if (out[0] == TOS_SUCCESS)
-                       return 1;
+                       dev->eco_supported = 1;
        }
-
-       return 0;
 }
 
 static enum led_brightness
@@ -709,9 +688,11 @@ toshiba_eco_mode_get_status(struct led_classdev *cdev)
        acpi_status status;
 
        status = tci_raw(dev, in, out);
-       if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
+       if (ACPI_FAILURE(status)) {
                pr_err("ACPI call to get ECO led failed\n");
                return LED_OFF;
+       } else if (out[0] != TOS_SUCCESS) {
+               return LED_OFF;
        }
 
        return out[2] ? LED_FULL : LED_OFF;
@@ -729,41 +710,32 @@ static void toshiba_eco_mode_set_status(struct led_classdev *cdev,
        /* Switch the Eco Mode led on/off */
        in[2] = (brightness) ? 1 : 0;
        status = tci_raw(dev, in, out);
-       if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
+       if (ACPI_FAILURE(status))
                pr_err("ACPI call to set ECO led failed\n");
-               return;
-       }
 }
 
 /* Accelerometer support */
-static int toshiba_accelerometer_supported(struct toshiba_acpi_dev *dev)
+static void toshiba_accelerometer_available(struct toshiba_acpi_dev *dev)
 {
        u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER2, 0, 0, 0, 0 };
        u32 out[TCI_WORDS];
        acpi_status status;
 
+       dev->accelerometer_supported = 0;
+
        /*
         * Check if the accelerometer call exists,
         * this call also serves as initialization
         */
        status = tci_raw(dev, in, out);
-       if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
+       if (ACPI_FAILURE(status))
                pr_err("ACPI call to query the accelerometer failed\n");
-               return -EIO;
-       } else if (out[0] == TOS_DATA_NOT_AVAILABLE ||
-                  out[0] == TOS_NOT_INITIALIZED) {
-               pr_err("Accelerometer not initialized\n");
-               return -EIO;
-       } else if (out[0] == TOS_NOT_SUPPORTED) {
-               pr_info("Accelerometer not supported\n");
-               return -ENODEV;
-       }
-
-       return 0;
+       else if (out[0] == TOS_SUCCESS)
+               dev->accelerometer_supported = 1;
 }
 
 static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev,
-                                     u32 *xy, u32 *z)
+                                    u32 *xy, u32 *z)
 {
        u32 in[TCI_WORDS] = { HCI_GET, HCI_ACCELEROMETER, 0, 1, 0, 0 };
        u32 out[TCI_WORDS];
@@ -771,15 +743,18 @@ static int toshiba_accelerometer_get(struct toshiba_acpi_dev *dev,
 
        /* Check the Accelerometer status */
        status = tci_raw(dev, in, out);
-       if (ACPI_FAILURE(status) || out[0] == TOS_INPUT_DATA_ERROR) {
+       if (ACPI_FAILURE(status)) {
                pr_err("ACPI call to query the accelerometer failed\n");
                return -EIO;
+       } else if (out[0] == TOS_NOT_SUPPORTED) {
+               return -ENODEV;
+       } else if (out[0] == TOS_SUCCESS) {
+               *xy = out[2];
+               *z = out[4];
+               return 0;
        }
 
-       *xy = out[2];
-       *z = out[4];
-
-       return 0;
+       return -EIO;
 }
 
 /* Sleep (Charge and Music) utilities support */
@@ -789,7 +764,6 @@ static void toshiba_usb_sleep_charge_available(struct toshiba_acpi_dev *dev)
        u32 out[TCI_WORDS];
        acpi_status status;
 
-       /* Set the feature to "not supported" in case of error */
        dev->usb_sleep_charge_supported = 0;
 
        if (!sci_open(dev))
@@ -801,7 +775,6 @@ static void toshiba_usb_sleep_charge_available(struct toshiba_acpi_dev *dev)
                sci_close(dev);
                return;
        } else if (out[0] == TOS_NOT_SUPPORTED) {
-               pr_info("USB Sleep and Charge not supported\n");
                sci_close(dev);
                return;
        } else if (out[0] == TOS_SUCCESS) {
@@ -810,25 +783,15 @@ static void toshiba_usb_sleep_charge_available(struct toshiba_acpi_dev *dev)
 
        in[5] = SCI_USB_CHARGE_BAT_LVL;
        status = tci_raw(dev, in, out);
+       sci_close(dev);
        if (ACPI_FAILURE(status)) {
                pr_err("ACPI call to get USB Sleep and Charge mode failed\n");
-               sci_close(dev);
-               return;
-       } else if (out[0] == TOS_NOT_SUPPORTED) {
-               pr_info("USB Sleep and Charge not supported\n");
-               sci_close(dev);
-               return;
        } else if (out[0] == TOS_SUCCESS) {
                dev->usbsc_bat_level = out[2];
-               /*
-                * If we reach this point, it means that the laptop has support
-                * for this feature and all values are initialized.
-                * Set it as supported.
-                */
+               /* Flag as supported */
                dev->usb_sleep_charge_supported = 1;
        }
 
-       sci_close(dev);
 }
 
 static int toshiba_usb_sleep_charge_get(struct toshiba_acpi_dev *dev,
@@ -841,17 +804,12 @@ static int toshiba_usb_sleep_charge_get(struct toshiba_acpi_dev *dev,
 
        result = sci_read(dev, SCI_USB_SLEEP_CHARGE, mode);
        sci_close(dev);
-       if (result == TOS_FAILURE) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to set USB S&C mode failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("USB Sleep and Charge not supported\n");
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       } else if (result == TOS_INPUT_DATA_ERROR) {
-               return -EIO;
-       }
 
-       return 0;
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_usb_sleep_charge_set(struct toshiba_acpi_dev *dev,
@@ -864,17 +822,12 @@ static int toshiba_usb_sleep_charge_set(struct toshiba_acpi_dev *dev,
 
        result = sci_write(dev, SCI_USB_SLEEP_CHARGE, mode);
        sci_close(dev);
-       if (result == TOS_FAILURE) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to set USB S&C mode failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("USB Sleep and Charge not supported\n");
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       } else if (result == TOS_INPUT_DATA_ERROR) {
-               return -EIO;
-       }
 
-       return 0;
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_sleep_functions_status_get(struct toshiba_acpi_dev *dev,
@@ -892,17 +845,14 @@ static int toshiba_sleep_functions_status_get(struct toshiba_acpi_dev *dev,
        sci_close(dev);
        if (ACPI_FAILURE(status)) {
                pr_err("ACPI call to get USB S&C battery level failed\n");
-               return -EIO;
        } else if (out[0] == TOS_NOT_SUPPORTED) {
-               pr_info("USB Sleep and Charge not supported\n");
                return -ENODEV;
-       } else if (out[0] == TOS_INPUT_DATA_ERROR) {
-               return -EIO;
+       } else if (out[0] == TOS_SUCCESS) {
+               *mode = out[2];
+               return 0;
        }
 
-       *mode = out[2];
-
-       return 0;
+       return -EIO;
 }
 
 static int toshiba_sleep_functions_status_set(struct toshiba_acpi_dev *dev,
@@ -919,17 +869,12 @@ static int toshiba_sleep_functions_status_set(struct toshiba_acpi_dev *dev,
        in[5] = SCI_USB_CHARGE_BAT_LVL;
        status = tci_raw(dev, in, out);
        sci_close(dev);
-       if (ACPI_FAILURE(status)) {
+       if (ACPI_FAILURE(status))
                pr_err("ACPI call to set USB S&C battery level failed\n");
-               return -EIO;
-       } else if (out[0] == TOS_NOT_SUPPORTED) {
-               pr_info("USB Sleep and Charge not supported\n");
+       else if (out[0] == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       } else if (out[0] == TOS_INPUT_DATA_ERROR) {
-               return -EIO;
-       }
 
-       return 0;
+       return out[0] == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_usb_rapid_charge_get(struct toshiba_acpi_dev *dev,
@@ -947,16 +892,14 @@ static int toshiba_usb_rapid_charge_get(struct toshiba_acpi_dev *dev,
        sci_close(dev);
        if (ACPI_FAILURE(status)) {
                pr_err("ACPI call to get USB Rapid Charge failed\n");
-               return -EIO;
-       } else if (out[0] == TOS_NOT_SUPPORTED ||
-                  out[0] == TOS_INPUT_DATA_ERROR) {
-               pr_info("USB Rapid Charge not supported\n");
+       } else if (out[0] == TOS_NOT_SUPPORTED) {
                return -ENODEV;
+       } else if (out[0] == TOS_SUCCESS || out[0] == TOS_SUCCESS2) {
+               *state = out[2];
+               return 0;
        }
 
-       *state = out[2];
-
-       return 0;
+       return -EIO;
 }
 
 static int toshiba_usb_rapid_charge_set(struct toshiba_acpi_dev *dev,
@@ -973,17 +916,12 @@ static int toshiba_usb_rapid_charge_set(struct toshiba_acpi_dev *dev,
        in[5] = SCI_USB_CHARGE_RAPID_DSP;
        status = tci_raw(dev, in, out);
        sci_close(dev);
-       if (ACPI_FAILURE(status)) {
+       if (ACPI_FAILURE(status))
                pr_err("ACPI call to set USB Rapid Charge failed\n");
-               return -EIO;
-       } else if (out[0] == TOS_NOT_SUPPORTED) {
-               pr_info("USB Rapid Charge not supported\n");
+       else if (out[0] == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       } else if (out[0] == TOS_INPUT_DATA_ERROR) {
-               return -EIO;
-       }
 
-       return 0;
+       return (out[0] == TOS_SUCCESS || out[0] == TOS_SUCCESS2) ? 0 : -EIO;
 }
 
 static int toshiba_usb_sleep_music_get(struct toshiba_acpi_dev *dev, u32 *state)
@@ -995,17 +933,12 @@ static int toshiba_usb_sleep_music_get(struct toshiba_acpi_dev *dev, u32 *state)
 
        result = sci_read(dev, SCI_USB_SLEEP_MUSIC, state);
        sci_close(dev);
-       if (result == TOS_FAILURE) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to get Sleep and Music failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("Sleep and Music not supported\n");
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       } else if (result == TOS_INPUT_DATA_ERROR) {
-               return -EIO;
-       }
 
-       return 0;
+       return result = TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_usb_sleep_music_set(struct toshiba_acpi_dev *dev, u32 state)
@@ -1017,17 +950,12 @@ static int toshiba_usb_sleep_music_set(struct toshiba_acpi_dev *dev, u32 state)
 
        result = sci_write(dev, SCI_USB_SLEEP_MUSIC, state);
        sci_close(dev);
-       if (result == TOS_FAILURE) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to set Sleep and Music failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("Sleep and Music not supported\n");
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       } else if (result == TOS_INPUT_DATA_ERROR) {
-               return -EIO;
-       }
 
-       return 0;
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 /* Keyboard function keys */
@@ -1040,15 +968,12 @@ static int toshiba_function_keys_get(struct toshiba_acpi_dev *dev, u32 *mode)
 
        result = sci_read(dev, SCI_KBD_FUNCTION_KEYS, mode);
        sci_close(dev);
-       if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to get KBD function keys failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("KBD function keys not supported\n");
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       }
 
-       return 0;
+       return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
 }
 
 static int toshiba_function_keys_set(struct toshiba_acpi_dev *dev, u32 mode)
@@ -1060,15 +985,12 @@ static int toshiba_function_keys_set(struct toshiba_acpi_dev *dev, u32 mode)
 
        result = sci_write(dev, SCI_KBD_FUNCTION_KEYS, mode);
        sci_close(dev);
-       if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to set KBD function keys failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("KBD function keys not supported\n");
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       }
 
-       return 0;
+       return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
 }
 
 /* Panel Power ON */
@@ -1081,17 +1003,12 @@ static int toshiba_panel_power_on_get(struct toshiba_acpi_dev *dev, u32 *state)
 
        result = sci_read(dev, SCI_PANEL_POWER_ON, state);
        sci_close(dev);
-       if (result == TOS_FAILURE) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to get Panel Power ON failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("Panel Power on not supported\n");
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       } else if (result == TOS_INPUT_DATA_ERROR) {
-               return -EIO;
-       }
 
-       return 0;
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int toshiba_panel_power_on_set(struct toshiba_acpi_dev *dev, u32 state)
@@ -1103,17 +1020,12 @@ static int toshiba_panel_power_on_set(struct toshiba_acpi_dev *dev, u32 state)
 
        result = sci_write(dev, SCI_PANEL_POWER_ON, state);
        sci_close(dev);
-       if (result == TOS_FAILURE) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to set Panel Power ON failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("Panel Power ON not supported\n");
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       } else if (result == TOS_INPUT_DATA_ERROR) {
-               return -EIO;
-       }
 
-       return 0;
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 /* USB Three */
@@ -1126,17 +1038,12 @@ static int toshiba_usb_three_get(struct toshiba_acpi_dev *dev, u32 *state)
 
        result = sci_read(dev, SCI_USB_THREE, state);
        sci_close(dev);
-       if (result == TOS_FAILURE) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to get USB 3 failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("USB 3 not supported\n");
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       } else if (result == TOS_INPUT_DATA_ERROR) {
-               return -EIO;
-       }
 
-       return 0;
+       return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
 }
 
 static int toshiba_usb_three_set(struct toshiba_acpi_dev *dev, u32 state)
@@ -1148,17 +1055,12 @@ static int toshiba_usb_three_set(struct toshiba_acpi_dev *dev, u32 state)
 
        result = sci_write(dev, SCI_USB_THREE, state);
        sci_close(dev);
-       if (result == TOS_FAILURE) {
+       if (result == TOS_FAILURE)
                pr_err("ACPI call to set USB 3 failed\n");
-               return -EIO;
-       } else if (result == TOS_NOT_SUPPORTED) {
-               pr_info("USB 3 not supported\n");
+       else if (result == TOS_NOT_SUPPORTED)
                return -ENODEV;
-       } else if (result == TOS_INPUT_DATA_ERROR) {
-               return -EIO;
-       }
 
-       return 0;
+       return (result == TOS_SUCCESS || result == TOS_SUCCESS2) ? 0 : -EIO;
 }
 
 /* Hotkey Event type */
@@ -1172,35 +1074,39 @@ static int toshiba_hotkey_event_type_get(struct toshiba_acpi_dev *dev,
        status = tci_raw(dev, in, out);
        if (ACPI_FAILURE(status)) {
                pr_err("ACPI call to get System type failed\n");
-               return -EIO;
        } else if (out[0] == TOS_NOT_SUPPORTED) {
-               pr_info("System type not supported\n");
                return -ENODEV;
+       } else if (out[0] == TOS_SUCCESS) {
+               *type = out[3];
+               return 0;
        }
 
-       *type = out[3];
-
-       return 0;
+       return -EIO;
 }
 
 /* Transflective Backlight */
-static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, bool *enabled)
+static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, u32 *status)
 {
-       u32 hci_result;
-       u32 status;
+       u32 result = hci_read(dev, HCI_TR_BACKLIGHT, status);
+
+       if (result == TOS_FAILURE)
+               pr_err("ACPI call to get Transflective Backlight failed\n");
+       else if (result == TOS_NOT_SUPPORTED)
+               return -ENODEV;
 
-       hci_result = hci_read(dev, HCI_TR_BACKLIGHT, &status);
-       *enabled = !status;
-       return hci_result == TOS_SUCCESS ? 0 : -EIO;
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
-static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, bool enable)
+static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, u32 status)
 {
-       u32 hci_result;
-       u32 value = !enable;
+       u32 result = hci_write(dev, HCI_TR_BACKLIGHT, !status);
+
+       if (result == TOS_FAILURE)
+               pr_err("ACPI call to set Transflective Backlight failed\n");
+       else if (result == TOS_NOT_SUPPORTED)
+               return -ENODEV;
 
-       hci_result = hci_write(dev, HCI_TR_BACKLIGHT, value);
-       return hci_result == TOS_SUCCESS ? 0 : -EIO;
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static struct proc_dir_entry *toshiba_proc_dir;
@@ -1208,23 +1114,26 @@ static struct proc_dir_entry *toshiba_proc_dir;
 /* LCD Brightness */
 static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
 {
-       u32 hci_result;
+       u32 result;
        u32 value;
        int brightness = 0;
 
        if (dev->tr_backlight_supported) {
-               bool enabled;
-               int ret = get_tr_backlight_status(dev, &enabled);
+               int ret = get_tr_backlight_status(dev, &value);
 
                if (ret)
                        return ret;
-               if (enabled)
+               if (value)
                        return 0;
                brightness++;
        }
 
-       hci_result = hci_read(dev, HCI_LCD_BRIGHTNESS, &value);
-       if (hci_result == TOS_SUCCESS)
+       result = hci_read(dev, HCI_LCD_BRIGHTNESS, &value);
+       if (result == TOS_FAILURE)
+               pr_err("ACPI call to get LCD Brightness failed\n");
+       else if (result == TOS_NOT_SUPPORTED)
+               return -ENODEV;
+       if (result == TOS_SUCCESS)
                return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);
 
        return -EIO;
@@ -1240,8 +1149,8 @@ static int get_lcd_brightness(struct backlight_device *bd)
 static int lcd_proc_show(struct seq_file *m, void *v)
 {
        struct toshiba_acpi_dev *dev = m->private;
-       int value;
        int levels;
+       int value;
 
        if (!dev->backlight_dev)
                return -ENODEV;
@@ -1255,6 +1164,7 @@ static int lcd_proc_show(struct seq_file *m, void *v)
        }
 
        pr_err("Error reading LCD brightness\n");
+
        return -EIO;
 }
 
@@ -1265,11 +1175,10 @@ static int lcd_proc_open(struct inode *inode, struct file *file)
 
 static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
 {
-       u32 hci_result;
+       u32 result;
 
        if (dev->tr_backlight_supported) {
-               bool enable = !value;
-               int ret = set_tr_backlight_status(dev, enable);
+               int ret = set_tr_backlight_status(dev, !value);
 
                if (ret)
                        return ret;
@@ -1278,8 +1187,13 @@ static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
        }
 
        value = value << HCI_LCD_BRIGHTNESS_SHIFT;
-       hci_result = hci_write(dev, HCI_LCD_BRIGHTNESS, value);
-       return hci_result == TOS_SUCCESS ? 0 : -EIO;
+       result = hci_write(dev, HCI_LCD_BRIGHTNESS, value);
+       if (result == TOS_FAILURE)
+               pr_err("ACPI call to set LCD Brightness failed\n");
+       else if (result == TOS_NOT_SUPPORTED)
+               return -ENODEV;
+
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int set_lcd_status(struct backlight_device *bd)
@@ -1295,24 +1209,22 @@ static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
        struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
        char cmd[42];
        size_t len;
-       int value;
-       int ret;
        int levels = dev->backlight_dev->props.max_brightness + 1;
+       int value;
 
        len = min(count, sizeof(cmd) - 1);
        if (copy_from_user(cmd, buf, len))
                return -EFAULT;
        cmd[len] = '\0';
 
-       if (sscanf(cmd, " brightness : %i", &value) == 1 &&
-           value >= 0 && value < levels) {
-               ret = set_lcd_brightness(dev, value);
-               if (ret == 0)
-                       ret = count;
-       } else {
-               ret = -EINVAL;
-       }
-       return ret;
+       if (sscanf(cmd, " brightness : %i", &value) != 1 &&
+           value < 0 && value > levels)
+               return -EINVAL;
+
+       if (set_lcd_brightness(dev, value))
+               return -EIO;
+
+       return count;
 }
 
 static const struct file_operations lcd_proc_fops = {
@@ -1324,22 +1236,25 @@ static const struct file_operations lcd_proc_fops = {
        .write          = lcd_proc_write,
 };
 
+/* Video-Out */
 static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
 {
-       u32 hci_result;
+       u32 result = hci_read(dev, HCI_VIDEO_OUT, status);
+
+       if (result == TOS_FAILURE)
+               pr_err("ACPI call to get Video-Out failed\n");
+       else if (result == TOS_NOT_SUPPORTED)
+               return -ENODEV;
 
-       hci_result = hci_read(dev, HCI_VIDEO_OUT, status);
-       return hci_result == TOS_SUCCESS ? 0 : -EIO;
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int video_proc_show(struct seq_file *m, void *v)
 {
        struct toshiba_acpi_dev *dev = m->private;
        u32 value;
-       int ret;
 
-       ret = get_video_status(dev, &value);
-       if (!ret) {
+       if (!get_video_status(dev, &value)) {
                int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
                int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
                int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
@@ -1347,9 +1262,10 @@ static int video_proc_show(struct seq_file *m, void *v)
                seq_printf(m, "lcd_out:                 %d\n", is_lcd);
                seq_printf(m, "crt_out:                 %d\n", is_crt);
                seq_printf(m, "tv_out:                  %d\n", is_tv);
+               return 0;
        }
 
-       return ret;
+       return -EIO;
 }
 
 static int video_proc_open(struct inode *inode, struct file *file)
@@ -1361,13 +1277,14 @@ static ssize_t video_proc_write(struct file *file, const char __user *buf,
                                size_t count, loff_t *pos)
 {
        struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
-       char *cmd, *buffer;
-       int ret;
-       int value;
+       char *buffer;
+       char *cmd;
        int remain = count;
        int lcd_out = -1;
        int crt_out = -1;
        int tv_out = -1;
+       int value;
+       int ret;
        u32 video_out;
 
        cmd = kmalloc(count + 1, GFP_KERNEL);
@@ -1419,7 +1336,7 @@ static ssize_t video_proc_write(struct file *file, const char __user *buf,
                        ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
        }
 
-       return ret ? ret : count;
+       return ret ? -EIO : count;
 }
 
 static const struct file_operations video_proc_fops = {
@@ -1431,27 +1348,43 @@ static const struct file_operations video_proc_fops = {
        .write          = video_proc_write,
 };
 
+/* Fan status */
 static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
 {
-       u32 hci_result;
+       u32 result = hci_read(dev, HCI_FAN, status);
+
+       if (result == TOS_FAILURE)
+               pr_err("ACPI call to get Fan status failed\n");
+       else if (result == TOS_NOT_SUPPORTED)
+               return -ENODEV;
 
-       hci_result = hci_read(dev, HCI_FAN, status);
-       return hci_result == TOS_SUCCESS ? 0 : -EIO;
+       return result == TOS_SUCCESS ? 0 : -EIO;
+}
+
+static int set_fan_status(struct toshiba_acpi_dev *dev, u32 status)
+{
+       u32 result = hci_write(dev, HCI_FAN, status);
+
+       if (result == TOS_FAILURE)
+               pr_err("ACPI call to set Fan status failed\n");
+       else if (result == TOS_NOT_SUPPORTED)
+               return -ENODEV;
+
+       return result == TOS_SUCCESS ? 0 : -EIO;
 }
 
 static int fan_proc_show(struct seq_file *m, void *v)
 {
        struct toshiba_acpi_dev *dev = m->private;
-       int ret;
        u32 value;
 
-       ret = get_fan_status(dev, &value);
-       if (!ret) {
-               seq_printf(m, "running:                 %d\n", (value > 0));
-               seq_printf(m, "force_on:                %d\n", dev->force_fan);
-       }
+       if (get_fan_status(dev, &value))
+               return -EIO;
 
-       return ret;
+       seq_printf(m, "running:                 %d\n", (value > 0));
+       seq_printf(m, "force_on:                %d\n", dev->force_fan);
+
+       return 0;
 }
 
 static int fan_proc_open(struct inode *inode, struct file *file)
@@ -1466,23 +1399,20 @@ static ssize_t fan_proc_write(struct file *file, const char __user *buf,
        char cmd[42];
        size_t len;
        int value;
-       u32 hci_result;
 
        len = min(count, sizeof(cmd) - 1);
        if (copy_from_user(cmd, buf, len))
                return -EFAULT;
        cmd[len] = '\0';
 
-       if (sscanf(cmd, " force_on : %i", &value) == 1 &&
-           value >= 0 && value <= 1) {
-               hci_result = hci_write(dev, HCI_FAN, value);
-               if (hci_result == TOS_SUCCESS)
-                       dev->force_fan = value;
-               else
-                       return -EIO;
-       } else {
+       if (sscanf(cmd, " force_on : %i", &value) != 1 &&
+           value != 0 && value != 1)
                return -EINVAL;
-       }
+
+       if (set_fan_status(dev, value))
+               return -EIO;
+
+       dev->force_fan = value;
 
        return count;
 }
@@ -1499,32 +1429,10 @@ static const struct file_operations fan_proc_fops = {
 static int keys_proc_show(struct seq_file *m, void *v)
 {
        struct toshiba_acpi_dev *dev = m->private;
-       u32 hci_result;
-       u32 value;
-
-       if (!dev->key_event_valid && dev->system_event_supported) {
-               hci_result = hci_read(dev, HCI_SYSTEM_EVENT, &value);
-               if (hci_result == TOS_SUCCESS) {
-                       dev->key_event_valid = 1;
-                       dev->last_key_event = value;
-               } else if (hci_result == TOS_FIFO_EMPTY) {
-                       /* Better luck next time */
-               } else if (hci_result == TOS_NOT_SUPPORTED) {
-                       /*
-                        * This is a workaround for an unresolved issue on
-                        * some machines where system events sporadically
-                        * become disabled.
-                        */
-                       hci_result = hci_write(dev, HCI_SYSTEM_EVENT, 1);
-                       pr_notice("Re-enabled hotkeys\n");
-               } else {
-                       pr_err("Error reading hotkey status\n");
-                       return -EIO;
-               }
-       }
 
        seq_printf(m, "hotkey_ready:            %d\n", dev->key_event_valid);
        seq_printf(m, "hotkey:                  0x%04x\n", dev->last_key_event);
+
        return 0;
 }
 
@@ -1641,7 +1549,6 @@ static ssize_t fan_store(struct device *dev,
                         const char *buf, size_t count)
 {
        struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
-       u32 result;
        int state;
        int ret;
 
@@ -1652,11 +1559,9 @@ static ssize_t fan_store(struct device *dev,
        if (state != 0 && state != 1)
                return -EINVAL;
 
-       result = hci_write(toshiba, HCI_FAN, state);
-       if (result == TOS_FAILURE)
-               return -EIO;
-       else if (result == TOS_NOT_SUPPORTED)
-               return -ENODEV;
+       ret = set_fan_status(toshiba, state);
+       if (ret)
+               return ret;
 
        return count;
 }
@@ -1682,7 +1587,6 @@ static ssize_t kbd_backlight_mode_store(struct device *dev,
 {
        struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
        int mode;
-       int time;
        int ret;
 
 
@@ -1713,7 +1617,7 @@ static ssize_t kbd_backlight_mode_store(struct device *dev,
        /* Only make a change if the actual mode has changed */
        if (toshiba->kbd_mode != mode) {
                /* Shift the time to "base time" (0x3c0000 == 60 seconds) */
-               time = toshiba->kbd_time << HCI_MISC_SHIFT;
+               int time = toshiba->kbd_time << HCI_MISC_SHIFT;
 
                /* OR the "base time" to the actual method format */
                if (toshiba->kbd_type == 1) {
@@ -2261,6 +2165,81 @@ static struct attribute_group toshiba_attr_group = {
        .attrs = toshiba_attributes,
 };
 
+/*
+ * Misc device
+ */
+static int toshiba_acpi_smm_bridge(SMMRegisters *regs)
+{
+       u32 in[TCI_WORDS] = { regs->eax, regs->ebx, regs->ecx,
+                             regs->edx, regs->esi, regs->edi };
+       u32 out[TCI_WORDS];
+       acpi_status status;
+
+       status = tci_raw(toshiba_acpi, in, out);
+       if (ACPI_FAILURE(status)) {
+               pr_err("ACPI call to query SMM registers failed\n");
+               return -EIO;
+       }
+
+       /* Fillout the SMM struct with the TCI call results */
+       regs->eax = out[0];
+       regs->ebx = out[1];
+       regs->ecx = out[2];
+       regs->edx = out[3];
+       regs->esi = out[4];
+       regs->edi = out[5];
+
+       return 0;
+}
+
+static long toshiba_acpi_ioctl(struct file *fp, unsigned int cmd,
+                              unsigned long arg)
+{
+       SMMRegisters __user *argp = (SMMRegisters __user *)arg;
+       SMMRegisters regs;
+       int ret;
+
+       if (!argp)
+               return -EINVAL;
+
+       switch (cmd) {
+       case TOSH_SMM:
+               if (copy_from_user(&regs, argp, sizeof(SMMRegisters)))
+                       return -EFAULT;
+               ret = toshiba_acpi_smm_bridge(&regs);
+               if (ret)
+                       return ret;
+               if (copy_to_user(argp, &regs, sizeof(SMMRegisters)))
+                       return -EFAULT;
+               break;
+       case TOSHIBA_ACPI_SCI:
+               if (copy_from_user(&regs, argp, sizeof(SMMRegisters)))
+                       return -EFAULT;
+               /* Ensure we are being called with a SCI_{GET, SET} register */
+               if (regs.eax != SCI_GET && regs.eax != SCI_SET)
+                       return -EINVAL;
+               if (!sci_open(toshiba_acpi))
+                       return -EIO;
+               ret = toshiba_acpi_smm_bridge(&regs);
+               sci_close(toshiba_acpi);
+               if (ret)
+                       return ret;
+               if (copy_to_user(argp, &regs, sizeof(SMMRegisters)))
+                       return -EFAULT;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static const struct file_operations toshiba_acpi_fops = {
+       .owner          = THIS_MODULE,
+       .unlocked_ioctl = toshiba_acpi_ioctl,
+       .llseek         = noop_llseek,
+};
+
 /*
  * Hotkeys
  */
@@ -2361,22 +2340,28 @@ static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
 
 static void toshiba_acpi_process_hotkeys(struct toshiba_acpi_dev *dev)
 {
-       u32 hci_result, value;
-       int retries = 3;
-       int scancode;
-
        if (dev->info_supported) {
-               scancode = toshiba_acpi_query_hotkey(dev);
-               if (scancode < 0)
+               int scancode = toshiba_acpi_query_hotkey(dev);
+
+               if (scancode < 0) {
                        pr_err("Failed to query hotkey event\n");
-               else if (scancode != 0)
+               } else if (scancode != 0) {
                        toshiba_acpi_report_hotkey(dev, scancode);
+                       dev->key_event_valid = 1;
+                       dev->last_key_event = scancode;
+               }
        } else if (dev->system_event_supported) {
+               u32 result;
+               u32 value;
+               int retries = 3;
+
                do {
-                       hci_result = hci_read(dev, HCI_SYSTEM_EVENT, &value);
-                       switch (hci_result) {
+                       result = hci_read(dev, HCI_SYSTEM_EVENT, &value);
+                       switch (result) {
                        case TOS_SUCCESS:
                                toshiba_acpi_report_hotkey(dev, (int)value);
+                               dev->key_event_valid = 1;
+                               dev->last_key_event = value;
                                break;
                        case TOS_NOT_SUPPORTED:
                                /*
@@ -2384,15 +2369,15 @@ static void toshiba_acpi_process_hotkeys(struct toshiba_acpi_dev *dev)
                                 * issue on some machines where system events
                                 * sporadically become disabled.
                                 */
-                               hci_result =
-                                       hci_write(dev, HCI_SYSTEM_EVENT, 1);
-                               pr_notice("Re-enabled hotkeys\n");
+                               result = hci_write(dev, HCI_SYSTEM_EVENT, 1);
+                               if (result == TOS_SUCCESS)
+                                       pr_notice("Re-enabled hotkeys\n");
                                /* Fall through */
                        default:
                                retries--;
                                break;
                        }
-               } while (retries && hci_result != TOS_FIFO_EMPTY);
+               } while (retries && result != TOS_FIFO_EMPTY);
        }
 }
 
@@ -2404,6 +2389,11 @@ static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
        u32 hci_result;
        int error;
 
+       if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID)) {
+               pr_info("WMI event detected, hotkeys will not be monitored\n");
+               return 0;
+       }
+
        error = toshiba_acpi_enable_hotkeys(dev);
        if (error)
                return error;
@@ -2496,7 +2486,6 @@ static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
        struct backlight_properties props;
        int brightness;
        int ret;
-       bool enabled;
 
        /*
         * Some machines don't support the backlight methods at all, and
@@ -2513,10 +2502,6 @@ static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
                return 0;
        }
 
-       /* Determine whether or not BIOS supports transflective backlight */
-       ret = get_tr_backlight_status(dev, &enabled);
-       dev->tr_backlight_supported = !ret;
-
        /*
         * Tell acpi-video-detect code to prefer vendor backlight on all
         * systems with transflective backlight and on dmi matched systems.
@@ -2552,10 +2537,52 @@ static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
        return 0;
 }
 
+static void print_supported_features(struct toshiba_acpi_dev *dev)
+{
+       pr_info("Supported laptop features:");
+
+       if (dev->hotkey_dev)
+               pr_cont(" hotkeys");
+       if (dev->backlight_dev)
+               pr_cont(" backlight");
+       if (dev->video_supported)
+               pr_cont(" video-out");
+       if (dev->fan_supported)
+               pr_cont(" fan");
+       if (dev->tr_backlight_supported)
+               pr_cont(" transflective-backlight");
+       if (dev->illumination_supported)
+               pr_cont(" illumination");
+       if (dev->kbd_illum_supported)
+               pr_cont(" keyboard-backlight");
+       if (dev->touchpad_supported)
+               pr_cont(" touchpad");
+       if (dev->eco_supported)
+               pr_cont(" eco-led");
+       if (dev->accelerometer_supported)
+               pr_cont(" accelerometer-axes");
+       if (dev->usb_sleep_charge_supported)
+               pr_cont(" usb-sleep-charge");
+       if (dev->usb_rapid_charge_supported)
+               pr_cont(" usb-rapid-charge");
+       if (dev->usb_sleep_music_supported)
+               pr_cont(" usb-sleep-music");
+       if (dev->kbd_function_keys_supported)
+               pr_cont(" special-function-keys");
+       if (dev->panel_power_on_supported)
+               pr_cont(" panel-power-on");
+       if (dev->usb_three_supported)
+               pr_cont(" usb3");
+
+       pr_cont("\n");
+}
+
 static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
 {
        struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
 
+       misc_deregister(&dev->miscdev);
+
        remove_toshiba_proc_entries(dev);
 
        if (dev->sysfs_created)
@@ -2574,13 +2601,13 @@ static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
 
        backlight_device_unregister(dev->backlight_dev);
 
-       if (dev->illumination_supported)
+       if (dev->illumination_led_registered)
                led_classdev_unregister(&dev->led_dev);
 
        if (dev->kbd_led_registered)
                led_classdev_unregister(&dev->kbd_led);
 
-       if (dev->eco_supported)
+       if (dev->eco_led_registered)
                led_classdev_unregister(&dev->eco_led);
 
        if (toshiba_acpi)
@@ -2627,6 +2654,17 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
                return -ENOMEM;
        dev->acpi_dev = acpi_dev;
        dev->method_hci = hci_method;
+       dev->miscdev.minor = MISC_DYNAMIC_MINOR;
+       dev->miscdev.name = "toshiba_acpi";
+       dev->miscdev.fops = &toshiba_acpi_fops;
+
+       ret = misc_register(&dev->miscdev);
+       if (ret) {
+               pr_err("Failed to register miscdevice\n");
+               kfree(dev);
+               return ret;
+       }
+
        acpi_dev->driver_data = dev;
        dev_set_drvdata(&acpi_dev->dev, dev);
 
@@ -2643,29 +2681,35 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
        if (toshiba_acpi_setup_keyboard(dev))
                pr_info("Unable to activate hotkeys\n");
 
+       /* Determine whether or not BIOS supports transflective backlight */
+       ret = get_tr_backlight_status(dev, &dummy);
+       dev->tr_backlight_supported = !ret;
+
        ret = toshiba_acpi_setup_backlight(dev);
        if (ret)
                goto error;
 
-       if (toshiba_illumination_available(dev)) {
+       toshiba_illumination_available(dev);
+       if (dev->illumination_supported) {
                dev->led_dev.name = "toshiba::illumination";
                dev->led_dev.max_brightness = 1;
                dev->led_dev.brightness_set = toshiba_illumination_set;
                dev->led_dev.brightness_get = toshiba_illumination_get;
                if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
-                       dev->illumination_supported = 1;
+                       dev->illumination_led_registered = true;
        }
 
-       if (toshiba_eco_mode_available(dev)) {
+       toshiba_eco_mode_available(dev);
+       if (dev->eco_supported) {
                dev->eco_led.name = "toshiba::eco_mode";
                dev->eco_led.max_brightness = 1;
                dev->eco_led.brightness_set = toshiba_eco_mode_set_status;
                dev->eco_led.brightness_get = toshiba_eco_mode_get_status;
                if (!led_classdev_register(&dev->acpi_dev->dev, &dev->eco_led))
-                       dev->eco_supported = 1;
+                       dev->eco_led_registered = true;
        }
 
-       dev->kbd_illum_supported = toshiba_kbd_illum_available(dev);
+       toshiba_kbd_illum_available(dev);
        /*
         * Only register the LED if KBD illumination is supported
         * and the keyboard backlight operation mode is set to FN-Z
@@ -2676,14 +2720,13 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
                dev->kbd_led.brightness_set = toshiba_kbd_backlight_set;
                dev->kbd_led.brightness_get = toshiba_kbd_backlight_get;
                if (!led_classdev_register(&dev->acpi_dev->dev, &dev->kbd_led))
-                       dev->kbd_led_registered = 1;
+                       dev->kbd_led_registered = true;
        }
 
        ret = toshiba_touchpad_get(dev, &dummy);
        dev->touchpad_supported = !ret;
 
-       ret = toshiba_accelerometer_supported(dev);
-       dev->accelerometer_supported = !ret;
+       toshiba_accelerometer_available(dev);
 
        toshiba_usb_sleep_charge_available(dev);
 
@@ -2705,6 +2748,8 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
        ret = get_fan_status(dev, &dummy);
        dev->fan_supported = !ret;
 
+       print_supported_features(dev);
+
        /*
         * Enable the "Special Functions" mode only if they are
         * supported and if they are activated.
@@ -2738,6 +2783,14 @@ static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
 
        switch (event) {
        case 0x80: /* Hotkeys and some system events */
+               /*
+                * Machines with this WMI GUID aren't supported due to bugs in
+                * their AML.
+                *
+                * Return silently to avoid triggering a netlink event.
+                */
+               if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
+                       return;
                toshiba_acpi_process_hotkeys(dev);
                break;
        case 0x81: /* Dock events */
@@ -2781,10 +2834,14 @@ static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
 static int toshiba_acpi_suspend(struct device *device)
 {
        struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
-       u32 result;
 
-       if (dev->hotkey_dev)
+       if (dev->hotkey_dev) {
+               u32 result;
+
                result = hci_write(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE);
+               if (result != TOS_SUCCESS)
+                       pr_info("Unable to disable hotkeys\n");
+       }
 
        return 0;
 }
@@ -2792,10 +2849,10 @@ static int toshiba_acpi_suspend(struct device *device)
 static int toshiba_acpi_resume(struct device *device)
 {
        struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
-       int error;
 
        if (dev->hotkey_dev) {
-               error = toshiba_acpi_enable_hotkeys(dev);
+               int error = toshiba_acpi_enable_hotkeys(dev);
+
                if (error)
                        pr_info("Unable to re-enable hotkeys\n");
        }
@@ -2824,14 +2881,6 @@ static int __init toshiba_acpi_init(void)
 {
        int ret;
 
-       /*
-        * Machines with this WMI guid aren't supported due to bugs in
-        * their AML. This check relies on wmi initializing before
-        * toshiba_acpi to guarantee guids have been identified.
-        */
-       if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
-               return -ENODEV;
-
        toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
        if (!toshiba_proc_dir) {
                pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
index e9bef5b..c58bf4b 100644 (file)
@@ -1,6 +1,7 @@
 /* toshiba.h -- Linux driver for accessing the SMM on Toshiba laptops 
  *
  * Copyright (c) 1996-2000  Jonathan A. Buzzard (jonathan@buzzard.org.uk)
+ * Copyright (c) 2015  Azael Avalos <coproscefalo@gmail.com>
  *
  * Thanks to Juergen Heinzl <juergen@monocerus.demon.co.uk> for the pointers
  * on making sure the structure is aligned and packed.
 #ifndef _UAPI_LINUX_TOSHIBA_H
 #define _UAPI_LINUX_TOSHIBA_H
 
-#define TOSH_PROC "/proc/toshiba"
-#define TOSH_DEVICE "/dev/toshiba"
-#define TOSH_SMM _IOWR('t', 0x90, int) /* broken: meant 24 bytes */
+/*
+ * Toshiba modules paths
+ */
+
+#define TOSH_PROC              "/proc/toshiba"
+#define TOSH_DEVICE            "/dev/toshiba"
+#define TOSHIBA_ACPI_PROC      "/proc/acpi/toshiba"
+#define TOSHIBA_ACPI_DEVICE    "/dev/toshiba_acpi"
+
+/*
+ * Toshiba SMM structure
+ */
 
 typedef struct {
        unsigned int eax;
@@ -33,5 +43,21 @@ typedef struct {
        unsigned int edi __attribute__ ((packed));
 } SMMRegisters;
 
+/*
+ * IOCTLs (0x90 - 0x91)
+ */
+
+#define TOSH_SMM               _IOWR('t', 0x90, SMMRegisters)
+/*
+ * Convenience toshiba_acpi command.
+ *
+ * The System Configuration Interface (SCI) is opened/closed internally
+ * to avoid userspace of buggy BIOSes.
+ *
+ * The toshiba_acpi module checks whether the eax register is set with
+ * SCI_GET (0xf300) or SCI_SET (0xf400), returning -EINVAL if not.
+ */
+#define TOSHIBA_ACPI_SCI       _IOWR('t', 0x91, SMMRegisters)
+
 
 #endif /* _UAPI_LINUX_TOSHIBA_H */