15 files changed, 485 insertions, 65 deletions

diff --git a/Documentation/platform/x86-laptop-drivers.txt b/Documentation/platform/x86-laptop-drivers.txt
new file mode 100644
index 000000000000..01facd2590bb
--- /dev/null
+++ b/Documentation/platform/x86-laptop-drivers.txt
@@ -0,0 +1,18 @@
+compal-laptop
+=============
+List of supported hardware:
+
+by Compal:
+        Compal FL90/IFL90
+        Compal FL91/IFL91
+        Compal FL92/JFL92
+        Compal FT00/IFT00
+
+by Dell:
+        Dell Vostro 1200
+        Dell Mini 9 (Inspiron 910)
+        Dell Mini 10 (Inspiron 1010)
+        Dell Mini 10v (Inspiron 1011)
+        Dell Mini 1012 (Inspiron 1012)
+        Dell Inspiron 11z (Inspiron 1110)
+        Dell Mini 12 (Inspiron 1210)
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 27df2c533b09..172f26ce59ac 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -102,7 +102,7 @@ config DELL_LAPTOP
         default n
         ---help---
         This driver adds support for rfkill and backlight control to Dell
-        laptops.
+        laptops (except for some models covered by the Compal driver).
 
 config DELL_WMI
         tristate "Dell WMI extras"
@@ -127,6 +127,16 @@ config DELL_WMI_AIO
           To compile this driver as a module, choose M here: the module will
           be called dell-wmi-aio.
 
+config DELL_SMO8800
+        tristate "Dell Latitude freefall driver (ACPI SMO8800/SMO8810)"
+        depends on ACPI
+        ---help---
+          Say Y here if you want to support SMO8800/SMO8810 freefall device
+          on Dell Latitude laptops.
+
+          To compile this driver as a module, choose M here: the module will
+          be called dell-smo8800.
+
 
 config FUJITSU_LAPTOP
         tristate "Fujitsu Laptop Extras"
@@ -265,23 +275,21 @@ config PANASONIC_LAPTOP
           R2, R3, R5, T2, W2 and Y2 series), say Y.
 
 config COMPAL_LAPTOP
-        tristate "Compal Laptop Extras"
+        tristate "Compal (and others) Laptop Extras"
         depends on ACPI
         depends on BACKLIGHT_CLASS_DEVICE
         depends on RFKILL
         depends on HWMON
         depends on POWER_SUPPLY
         ---help---
-          This is a driver for laptops built by Compal:
-
-          Compal FL90/IFL90
-          Compal FL91/IFL91
-          Compal FL92/JFL92
-          Compal FT00/IFT00
+          This is a driver for laptops built by Compal, and some models by
+          other brands (e.g. Dell, Toshiba).
 
-          It adds support for Bluetooth, WLAN and LCD brightness control.
+          It adds support for rfkill, Bluetooth, WLAN and LCD brightness
+          control.
 
-          If you have an Compal FL9x/IFL9x/FT00 laptop, say Y or M here.
+          For a (possibly incomplete) list of supported laptops, please refer
+          to: Documentation/platform/x86-laptop-drivers.txt
 
 config SONY_LAPTOP
         tristate "Sony Laptop Extras"
@@ -724,7 +732,7 @@ config IBM_RTL
 
 config XO1_RFKILL
         tristate "OLPC XO-1 software RF kill switch"
-        depends on OLPC
+        depends on OLPC || COMPILE_TEST
         depends on RFKILL
         ---help---
           Support for enabling/disabling the WLAN interface on the OLPC XO-1
@@ -732,6 +740,7 @@ config XO1_RFKILL
 
 config XO15_EBOOK
         tristate "OLPC XO-1.5 ebook switch"
+        depends on OLPC || COMPILE_TEST
         depends on ACPI && INPUT
         ---help---
           Support for the ebook switch on the OLPC XO-1.5 laptop.
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 1a2eafc9d48e..c4ca428fd3db 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_COMPAL_LAPTOP)	+= compal-laptop.o
 obj-$(CONFIG_DELL_LAPTOP)       += dell-laptop.o
 obj-$(CONFIG_DELL_WMI)          += dell-wmi.o
 obj-$(CONFIG_DELL_WMI_AIO)      += dell-wmi-aio.o
+obj-$(CONFIG_DELL_SMO8800)      += dell-smo8800.o
 obj-$(CONFIG_ACER_WMI)          += acer-wmi.o
 obj-$(CONFIG_ACERHDF)           += acerhdf.o
 obj-$(CONFIG_HP_ACCEL)          += hp_accel.o
diff --git a/drivers/platform/x86/alienware-wmi.c b/drivers/platform/x86/alienware-wmi.c
index 541f9514f76f..297b6640213f 100644
--- a/drivers/platform/x86/alienware-wmi.c
+++ b/drivers/platform/x86/alienware-wmi.c
@@ -32,6 +32,7 @@
 #define WMAX_METHOD_HDMI_STATUS         0x2
 #define WMAX_METHOD_BRIGHTNESS          0x3
 #define WMAX_METHOD_ZONE_CONTROL        0x4
+#define WMAX_METHOD_HDMI_CABLE          0x5
 
 MODULE_AUTHOR("Mario Limonciello <mario_limonciello@dell.com>");
 MODULE_DESCRIPTION("Alienware special feature control");
@@ -350,12 +351,11 @@ static int alienware_zone_init(struct platform_device *dev)
         char *name;
 
         if (interface == WMAX) {
-                global_led.max_brightness = 100;
                 lighting_control_state = WMAX_RUNNING;
         } else if (interface == LEGACY) {
-                global_led.max_brightness = 0x0F;
                 lighting_control_state = LEGACY_RUNNING;
         }
+        global_led.max_brightness = 0x0F;
         global_brightness = global_led.max_brightness;
 
         /*
@@ -423,41 +423,85 @@ static void alienware_zone_exit(struct platform_device *dev)
         The HDMI mux sysfs node indicates the status of the HDMI input mux.
         It can toggle between standard system GPU output and HDMI input.
 */
-static ssize_t show_hdmi(struct device *dev, struct device_attribute *attr,
-                         char *buf)
+static acpi_status alienware_hdmi_command(struct hdmi_args *in_args,
+                                          u32 command, int *out_data)
 {
         acpi_status status;
-        struct acpi_buffer input;
         union acpi_object *obj;
-        u32 tmp = 0;
-        struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+        struct acpi_buffer input;
+        struct acpi_buffer output;
+
+        input.length = (acpi_size) sizeof(*in_args);
+        input.pointer = in_args;
+        if (out_data != NULL) {
+                output.length = ACPI_ALLOCATE_BUFFER;
+                output.pointer = NULL;
+                status = wmi_evaluate_method(WMAX_CONTROL_GUID, 1,
+                                             command, &input, &output);
+        } else
+                status = wmi_evaluate_method(WMAX_CONTROL_GUID, 1,
+                                             command, &input, NULL);
+
+        if (ACPI_SUCCESS(status) && out_data != NULL) {
+                obj = (union acpi_object *)output.pointer;
+                if (obj && obj->type == ACPI_TYPE_INTEGER)
+                        *out_data = (u32) obj->integer.value;
+        }
+        return status;
+
+}
+
+static ssize_t show_hdmi_cable(struct device *dev,
+                               struct device_attribute *attr, char *buf)
+{
+        acpi_status status;
+        u32 out_data;
         struct hdmi_args in_args = {
                 .arg = 0,
         };
-        input.length = (acpi_size) sizeof(in_args);
-        input.pointer = &in_args;
-        status = wmi_evaluate_method(WMAX_CONTROL_GUID, 1,
-                                     WMAX_METHOD_HDMI_STATUS, &input, &output);
+        status =
+            alienware_hdmi_command(&in_args, WMAX_METHOD_HDMI_CABLE,
+                                   (u32 *) &out_data);
+        if (ACPI_SUCCESS(status)) {
+                if (out_data == 0)
+                        return scnprintf(buf, PAGE_SIZE,
+                                         "[unconnected] connected unknown\n");
+                else if (out_data == 1)
+                        return scnprintf(buf, PAGE_SIZE,
+                                         "unconnected [connected] unknown\n");
+        }
+        pr_err("alienware-wmi: unknown HDMI cable status: %d\n", status);
+        return scnprintf(buf, PAGE_SIZE, "unconnected connected [unknown]\n");
+}
+
+static ssize_t show_hdmi_source(struct device *dev,
+                                struct device_attribute *attr, char *buf)
+{
+        acpi_status status;
+        u32 out_data;
+        struct hdmi_args in_args = {
+                .arg = 0,
+        };
+        status =
+            alienware_hdmi_command(&in_args, WMAX_METHOD_HDMI_STATUS,
+                                   (u32 *) &out_data);
 
         if (ACPI_SUCCESS(status)) {
-                obj = (union acpi_object *)output.pointer;
-                if (obj && obj->type == ACPI_TYPE_INTEGER)
-                        tmp = (u32) obj->integer.value;
-                if (tmp == 1)
+                if (out_data == 1)
                         return scnprintf(buf, PAGE_SIZE,
                                          "[input] gpu unknown\n");
-                else if (tmp == 2)
+                else if (out_data == 2)
                         return scnprintf(buf, PAGE_SIZE,
                                          "input [gpu] unknown\n");
         }
-        pr_err("alienware-wmi: unknown HDMI status: %d\n", status);
+        pr_err("alienware-wmi: unknown HDMI source status: %d\n", out_data);
         return scnprintf(buf, PAGE_SIZE, "input gpu [unknown]\n");
 }
 
-static ssize_t toggle_hdmi(struct device *dev, struct device_attribute *attr,
-                           const char *buf, size_t count)
+static ssize_t toggle_hdmi_source(struct device *dev,
+                                  struct device_attribute *attr,
+                                  const char *buf, size_t count)
 {
-        struct acpi_buffer input;
         acpi_status status;
         struct hdmi_args args;
         if (strcmp(buf, "gpu\n") == 0)
@@ -467,33 +511,46 @@ static ssize_t toggle_hdmi(struct device *dev, struct device_attribute *attr,
         else
                 args.arg = 3;
         pr_debug("alienware-wmi: setting hdmi to %d : %s", args.arg, buf);
-        input.length = (acpi_size) sizeof(args);
-        input.pointer = &args;
-        status = wmi_evaluate_method(WMAX_CONTROL_GUID, 1,
-                                     WMAX_METHOD_HDMI_SOURCE, &input, NULL);
+
+        status = alienware_hdmi_command(&args, WMAX_METHOD_HDMI_SOURCE, NULL);
+
         if (ACPI_FAILURE(status))
                 pr_err("alienware-wmi: HDMI toggle failed: results: %u\n",
                        status);
         return count;
 }
 
-static DEVICE_ATTR(hdmi, S_IRUGO | S_IWUSR, show_hdmi, toggle_hdmi);
+static DEVICE_ATTR(cable, S_IRUGO, show_hdmi_cable, NULL);
+static DEVICE_ATTR(source, S_IRUGO | S_IWUSR, show_hdmi_source,
+                   toggle_hdmi_source);
+
+static struct attribute *hdmi_attrs[] = {
+        &dev_attr_cable.attr,
+        &dev_attr_source.attr,
+        NULL,
+};
 
-static void remove_hdmi(struct platform_device *device)
+static struct attribute_group hdmi_attribute_group = {
+        .name = "hdmi",
+        .attrs = hdmi_attrs,
+};
+
+static void remove_hdmi(struct platform_device *dev)
 {
-        device_remove_file(&device->dev, &dev_attr_hdmi);
+        sysfs_remove_group(&dev->dev.kobj, &hdmi_attribute_group);
 }
 
-static int create_hdmi(void)
+static int create_hdmi(struct platform_device *dev)
 {
-        int ret = -ENOMEM;
-        ret = device_create_file(&platform_device->dev, &dev_attr_hdmi);
+        int ret;
+
+        ret = sysfs_create_group(&dev->dev.kobj, &hdmi_attribute_group);
         if (ret)
                 goto error_create_hdmi;
         return 0;
 
 error_create_hdmi:
-        remove_hdmi(platform_device);
+        remove_hdmi(dev);
         return ret;
 }
 
@@ -527,7 +584,7 @@ static int __init alienware_wmi_init(void)
                 goto fail_platform_device2;
 
         if (interface == WMAX) {
-                ret = create_hdmi();
+                ret = create_hdmi(platform_device);
                 if (ret)
                         goto fail_prep_hdmi;
         }
diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
index 563f59efa669..ddf0eefd862c 100644
--- a/drivers/platform/x86/asus-nb-wmi.c
+++ b/drivers/platform/x86/asus-nb-wmi.c
@@ -137,6 +137,15 @@ static struct dmi_system_id asus_quirks[] = {
         },
         {
                 .callback = dmi_matched,
+                .ident = "ASUSTeK COMPUTER INC. X550CA",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "X550CA"),
+                },
+                .driver_data = &quirk_asus_x401u,
+        },
+        {
+                .callback = dmi_matched,
                 .ident = "ASUSTeK COMPUTER INC. X55A",
                 .matches = {
                         DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 91ef69a52263..3c6ccedc82b6 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -266,7 +266,7 @@ static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
         acpi_status status;
         union acpi_object *obj;
-        u32 tmp;
+        u32 tmp = 0;
 
         status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
                                      &input, &output);
@@ -277,8 +277,6 @@ static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
         obj = (union acpi_object *)output.pointer;
         if (obj && obj->type == ACPI_TYPE_INTEGER)
                 tmp = (u32) obj->integer.value;
-        else
-                tmp = 0;
 
         if (retval)
                 *retval = tmp;
diff --git a/drivers/platform/x86/dell-smo8800.c b/drivers/platform/x86/dell-smo8800.c
new file mode 100644
index 000000000000..a653716055d1
--- /dev/null
+++ b/drivers/platform/x86/dell-smo8800.c
@@ -0,0 +1,233 @@
+/*
+ *  dell-smo8800.c - Dell Latitude ACPI SMO8800/SMO8810 freefall sensor driver
+ *
+ *  Copyright (C) 2012 Sonal Santan <sonal.santan@gmail.com>
+ *  Copyright (C) 2014 Pali Rohár <pali.rohar@gmail.com>
+ *
+ *  This is loosely based on lis3lv02d driver.
+ *
+ *  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; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ */
+
+#define DRIVER_NAME "smo8800"
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/interrupt.h>
+#include <linux/miscdevice.h>
+
+struct smo8800_device {
+        u32 irq;                     /* acpi device irq */
+        atomic_t counter;            /* count after last read */
+        struct miscdevice miscdev;   /* for /dev/freefall */
+        unsigned long misc_opened;   /* whether the device is open */
+        wait_queue_head_t misc_wait; /* Wait queue for the misc dev */
+        struct device *dev;          /* acpi device */
+};
+
+static irqreturn_t smo8800_interrupt_quick(int irq, void *data)
+{
+        struct smo8800_device *smo8800 = data;
+
+        atomic_inc(&smo8800->counter);
+        wake_up_interruptible(&smo8800->misc_wait);
+        return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t smo8800_interrupt_thread(int irq, void *data)
+{
+        struct smo8800_device *smo8800 = data;
+
+        dev_info(smo8800->dev, "detected free fall\n");
+        return IRQ_HANDLED;
+}
+
+static acpi_status smo8800_get_resource(struct acpi_resource *resource,
+                                        void *context)
+{
+        struct acpi_resource_extended_irq *irq;
+
+        if (resource->type != ACPI_RESOURCE_TYPE_EXTENDED_IRQ)
+                return AE_OK;
+
+        irq = &resource->data.extended_irq;
+        if (!irq || !irq->interrupt_count)
+                return AE_OK;
+
+        *((u32 *)context) = irq->interrupts[0];
+        return AE_CTRL_TERMINATE;
+}
+
+static u32 smo8800_get_irq(struct acpi_device *device)
+{
+        u32 irq = 0;
+        acpi_status status;
+
+        status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
+                                     smo8800_get_resource, &irq);
+        if (ACPI_FAILURE(status)) {
+                dev_err(&device->dev, "acpi_walk_resources failed\n");
+                return 0;
+        }
+
+        return irq;
+}
+
+static ssize_t smo8800_misc_read(struct file *file, char __user *buf,
+                                 size_t count, loff_t *pos)
+{
+        struct smo8800_device *smo8800 = container_of(file->private_data,
+                                         struct smo8800_device, miscdev);
+
+        u32 data = 0;
+        unsigned char byte_data = 0;
+        ssize_t retval = 1;
+
+        if (count < 1)
+                return -EINVAL;
+
+        atomic_set(&smo8800->counter, 0);
+        retval = wait_event_interruptible(smo8800->misc_wait,
+                                (data = atomic_xchg(&smo8800->counter, 0)));
+
+        if (retval)
+                return retval;
+
+        byte_data = 1;
+        retval = 1;
+
+        if (data < 255)
+                byte_data = data;
+        else
+                byte_data = 255;
+
+        if (put_user(byte_data, buf))
+                retval = -EFAULT;
+
+        return retval;
+}
+
+static int smo8800_misc_open(struct inode *inode, struct file *file)
+{
+        struct smo8800_device *smo8800 = container_of(file->private_data,
+                                         struct smo8800_device, miscdev);
+
+        if (test_and_set_bit(0, &smo8800->misc_opened))
+                return -EBUSY; /* already open */
+
+        atomic_set(&smo8800->counter, 0);
+        return 0;
+}
+
+static int smo8800_misc_release(struct inode *inode, struct file *file)
+{
+        struct smo8800_device *smo8800 = container_of(file->private_data,
+                                         struct smo8800_device, miscdev);
+
+        clear_bit(0, &smo8800->misc_opened); /* release the device */
+        return 0;
+}
+
+static const struct file_operations smo8800_misc_fops = {
+        .owner = THIS_MODULE,
+        .read = smo8800_misc_read,
+        .open = smo8800_misc_open,
+        .release = smo8800_misc_release,
+};
+
+static int smo8800_add(struct acpi_device *device)
+{
+        int err;
+        struct smo8800_device *smo8800;
+
+        smo8800 = devm_kzalloc(&device->dev, sizeof(*smo8800), GFP_KERNEL);
+        if (!smo8800) {
+                dev_err(&device->dev, "failed to allocate device data\n");
+                return -ENOMEM;
+        }
+
+        smo8800->dev = &device->dev;
+        smo8800->miscdev.minor = MISC_DYNAMIC_MINOR;
+        smo8800->miscdev.name = "freefall";
+        smo8800->miscdev.fops = &smo8800_misc_fops;
+
+        init_waitqueue_head(&smo8800->misc_wait);
+
+        err = misc_register(&smo8800->miscdev);
+        if (err) {
+                dev_err(&device->dev, "failed to register misc dev: %d\n", err);
+                return err;
+        }
+
+        device->driver_data = smo8800;
+
+        smo8800->irq = smo8800_get_irq(device);
+        if (!smo8800->irq) {
+                dev_err(&device->dev, "failed to obtain IRQ\n");
+                err = -EINVAL;
+                goto error;
+        }
+
+        err = request_threaded_irq(smo8800->irq, smo8800_interrupt_quick,
+                                   smo8800_interrupt_thread,
+                                   IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+                                   DRIVER_NAME, smo8800);
+        if (err) {
+                dev_err(&device->dev,
+                        "failed to request thread for IRQ %d: %d\n",
+                        smo8800->irq, err);
+                goto error;
+        }
+
+        dev_dbg(&device->dev, "device /dev/freefall registered with IRQ %d\n",
+                 smo8800->irq);
+        return 0;
+
+error:
+        misc_deregister(&smo8800->miscdev);
+        return err;
+}
+
+static int smo8800_remove(struct acpi_device *device)
+{
+        struct smo8800_device *smo8800 = device->driver_data;
+
+        free_irq(smo8800->irq, smo8800);
+        misc_deregister(&smo8800->miscdev);
+        dev_dbg(&device->dev, "device /dev/freefall unregistered\n");
+        return 0;
+}
+
+static const struct acpi_device_id smo8800_ids[] = {
+        { "SMO8800", 0 },
+        { "SMO8810", 0 },
+        { "", 0 },
+};
+
+MODULE_DEVICE_TABLE(acpi, smo8800_ids);
+
+static struct acpi_driver smo8800_driver = {
+        .name = DRIVER_NAME,
+        .class = "Latitude",
+        .ids = smo8800_ids,
+        .ops = {
+                .add = smo8800_add,
+                .remove = smo8800_remove,
+        },
+        .owner = THIS_MODULE,
+};
+
+module_acpi_driver(smo8800_driver);
+
+MODULE_DESCRIPTION("Dell Latitude freefall driver (ACPI SMO8800/SMO8810)");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Sonal Santan, Pali Rohár");
diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index 8ba8956b5a48..484a8673b835 100644
--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -53,6 +53,7 @@ MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
 #define HPWMI_ALS_QUERY 0x3
 #define HPWMI_HARDWARE_QUERY 0x4
 #define HPWMI_WIRELESS_QUERY 0x5
+#define HPWMI_BIOS_QUERY 0x9
 #define HPWMI_HOTKEY_QUERY 0xc
 #define HPWMI_FEATURE_QUERY 0xd
 #define HPWMI_WIRELESS2_QUERY 0x1b
@@ -144,6 +145,7 @@ static const struct key_entry hp_wmi_keymap[] = {
         { KE_KEY, 0x2142, { KEY_MEDIA } },
         { KE_KEY, 0x213b, { KEY_INFO } },
         { KE_KEY, 0x2169, { KEY_DIRECTION } },
+        { KE_KEY, 0x216a, { KEY_SETUP } },
         { KE_KEY, 0x231b, { KEY_HELP } },
         { KE_END, 0 }
 };
@@ -304,6 +306,19 @@ static int hp_wmi_bios_2009_later(void)
         return (state & 0x10) ? 1 : 0;
 }
 
+static int hp_wmi_enable_hotkeys(void)
+{
+        int ret;
+        int query = 0x6e;
+
+        ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, 1, &query, sizeof(query),
+                                   0);
+
+        if (ret)
+                return -EINVAL;
+        return 0;
+}
+
 static int hp_wmi_set_block(void *data, bool blocked)
 {
         enum hp_wmi_radio r = (enum hp_wmi_radio) data;
@@ -648,6 +663,9 @@ static int __init hp_wmi_input_setup(void)
                             hp_wmi_tablet_state());
         input_sync(hp_wmi_input_dev);
 
+        if (hp_wmi_bios_2009_later() == 4)
+                hp_wmi_enable_hotkeys();
+
         status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
         if (ACPI_FAILURE(status)) {
                 err = -EIO;
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index 6dd060a0bb65..b4c495a62eec 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -36,6 +36,8 @@
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>
 #include <linux/i8042.h>
+#include <linux/dmi.h>
+#include <linux/device.h>
 
 #define IDEAPAD_RFKILL_DEV_NUM  (3)
 
@@ -819,6 +821,19 @@ static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
         }
 }
 
+/* Blacklist for devices where the ideapad rfkill interface does not work */
+static struct dmi_system_id rfkill_blacklist[] = {
+        /* The Lenovo Yoga 2 11 always reports everything as blocked */
+        {
+                .ident = "Lenovo Yoga 2 11",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+                        DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Yoga 2 11"),
+                },
+        },
+        {}
+};
+
 static int ideapad_acpi_add(struct platform_device *pdev)
 {
         int ret, i;
@@ -833,7 +848,7 @@ static int ideapad_acpi_add(struct platform_device *pdev)
         if (read_method_int(adev->handle, "_CFG", &cfg))
                 return -ENODEV;
 
-        priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+        priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
         if (!priv)
                 return -ENOMEM;
 
@@ -844,7 +859,7 @@ static int ideapad_acpi_add(struct platform_device *pdev)
 
         ret = ideapad_sysfs_init(priv);
         if (ret)
-                goto sysfs_failed;
+                return ret;
 
         ret = ideapad_debugfs_init(priv);
         if (ret)
@@ -854,11 +869,10 @@ static int ideapad_acpi_add(struct platform_device *pdev)
         if (ret)
                 goto input_failed;
 
-        for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) {
-                if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
-                        ideapad_register_rfkill(priv, i);
-                else
-                        priv->rfk[i] = NULL;
+        if (!dmi_check_system(rfkill_blacklist)) {
+                for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
+                        if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
+                                ideapad_register_rfkill(priv, i);
         }
         ideapad_sync_rfk_state(priv);
         ideapad_sync_touchpad_state(priv);
@@ -884,8 +898,6 @@ input_failed:
         ideapad_debugfs_exit(priv);
 debugfs_failed:
         ideapad_sysfs_exit(priv);
-sysfs_failed:
-        kfree(priv);
         return ret;
 }
 
@@ -903,7 +915,6 @@ static int ideapad_acpi_remove(struct platform_device *pdev)
         ideapad_debugfs_exit(priv);
         ideapad_sysfs_exit(priv);
         dev_set_drvdata(&pdev->dev, NULL);
-        kfree(priv);
 
         return 0;
 }
diff --git a/drivers/platform/x86/intel_mid_thermal.c b/drivers/platform/x86/intel_mid_thermal.c
index 93fab8b70ce1..ab7860a21a22 100644
--- a/drivers/platform/x86/intel_mid_thermal.c
+++ b/drivers/platform/x86/intel_mid_thermal.c
@@ -481,7 +481,8 @@ static int mid_thermal_probe(struct platform_device *pdev)
         int i;
         struct platform_info *pinfo;
 
-        pinfo = kzalloc(sizeof(struct platform_info), GFP_KERNEL);
+        pinfo = devm_kzalloc(&pdev->dev, sizeof(struct platform_info),
+                             GFP_KERNEL);
         if (!pinfo)
                 return -ENOMEM;
 
@@ -489,7 +490,6 @@ static int mid_thermal_probe(struct platform_device *pdev)
         ret = mid_initialize_adc(&pdev->dev);
         if (ret) {
                 dev_err(&pdev->dev, "ADC init failed");
-                kfree(pinfo);
                 return ret;
         }
 
@@ -520,7 +520,6 @@ err:
                 thermal_zone_device_unregister(pinfo->tzd[i]);
         }
         configure_adc(0);
-        kfree(pinfo);
         return ret;
 }
 
@@ -541,8 +540,6 @@ static int mid_thermal_remove(struct platform_device *pdev)
                 thermal_zone_device_unregister(pinfo->tzd[i]);
         }
 
-        kfree(pinfo);
-
         /* Stop the ADC */
         return configure_adc(0);
 }
diff --git a/drivers/platform/x86/intel_pmic_gpio.c b/drivers/platform/x86/intel_pmic_gpio.c
index 2805988485f6..40929e4f7ad7 100644
--- a/drivers/platform/x86/intel_pmic_gpio.c
+++ b/drivers/platform/x86/intel_pmic_gpio.c
@@ -91,7 +91,7 @@ static void pmic_program_irqtype(int gpio, int type)
 
 static int pmic_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
-        if (offset > 8) {
+        if (offset >= 8) {
                 pr_err("only pin 0-7 support input\n");
                 return -1;/* we only have 8 GPIO can use as input */
         }
@@ -130,7 +130,7 @@ static int pmic_gpio_get(struct gpio_chip *chip, unsigned offset)
         int ret;
 
         /* we only have 8 GPIO pins we can use as input */
-        if (offset > 8)
+        if (offset >= 8)
                 return -EOPNOTSUPP;
         ret = intel_scu_ipc_ioread8(GPIO0 + offset, &r);
         if (ret < 0)
diff --git a/drivers/platform/x86/pvpanic.c b/drivers/platform/x86/pvpanic.c
index c9f6e511daa6..073a90a63dbc 100644
--- a/drivers/platform/x86/pvpanic.c
+++ b/drivers/platform/x86/pvpanic.c
@@ -70,6 +70,7 @@ pvpanic_panic_notify(struct notifier_block *nb, unsigned long code,
 
 static struct notifier_block pvpanic_panic_nb = {
         .notifier_call = pvpanic_panic_notify,
+        .priority = 1, /* let this called before broken drm_fb_helper */
 };
 
 
diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c
index d1f030053176..5a5966512277 100644
--- a/drivers/platform/x86/samsung-laptop.c
+++ b/drivers/platform/x86/samsung-laptop.c
@@ -27,6 +27,7 @@
 #include <linux/debugfs.h>
 #include <linux/ctype.h>
 #include <linux/efi.h>
+#include <linux/suspend.h>
 #include <acpi/video.h>
 
 /*
@@ -340,6 +341,8 @@ struct samsung_laptop {
         struct samsung_laptop_debug debug;
         struct samsung_quirks *quirks;
 
+        struct notifier_block pm_nb;
+
         bool handle_backlight;
         bool has_stepping_quirk;
 
@@ -348,6 +351,8 @@ struct samsung_laptop {
 
 struct samsung_quirks {
         bool broken_acpi_video;
+        bool four_kbd_backlight_levels;
+        bool enable_kbd_backlight;
 };
 
 static struct samsung_quirks samsung_unknown = {};
@@ -356,6 +361,11 @@ static struct samsung_quirks samsung_broken_acpi_video = {
         .broken_acpi_video = true,
 };
 
+static struct samsung_quirks samsung_np740u3e = {
+        .four_kbd_backlight_levels = true,
+        .enable_kbd_backlight = true,
+};
+
 static bool force;
 module_param(force, bool, 0);
 MODULE_PARM_DESC(force,
@@ -1051,6 +1061,8 @@ static int __init samsung_leds_init(struct samsung_laptop *samsung)
                 samsung->kbd_led.brightness_set = kbd_led_set;
                 samsung->kbd_led.brightness_get = kbd_led_get;
                 samsung->kbd_led.max_brightness = 8;
+                if (samsung->quirks->four_kbd_backlight_levels)
+                        samsung->kbd_led.max_brightness = 4;
 
                 ret = led_classdev_register(&samsung->platform_device->dev,
                                            &samsung->kbd_led);
@@ -1414,6 +1426,19 @@ static void samsung_platform_exit(struct samsung_laptop *samsung)
         }
 }
 
+static int samsung_pm_notification(struct notifier_block *nb,
+                                   unsigned long val, void *ptr)
+{
+        struct samsung_laptop *samsung;
+
+        samsung = container_of(nb, struct samsung_laptop, pm_nb);
+        if (val == PM_POST_HIBERNATION &&
+            samsung->quirks->enable_kbd_backlight)
+                kbd_backlight_enable(samsung);
+
+        return 0;
+}
+
 static int __init samsung_platform_init(struct samsung_laptop *samsung)
 {
         struct platform_device *pdev;
@@ -1534,6 +1559,15 @@ static struct dmi_system_id __initdata samsung_dmi_table[] = {
                 },
          .driver_data = &samsung_broken_acpi_video,
         },
+        {
+         .callback = samsung_dmi_matched,
+         .ident = "730U3E/740U3E",
+         .matches = {
+                DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+                DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"),
+                },
+         .driver_data = &samsung_np740u3e,
+        },
         { },
 };
 MODULE_DEVICE_TABLE(dmi, samsung_dmi_table);
@@ -1608,6 +1642,9 @@ static int __init samsung_init(void)
         if (ret)
                 goto error_debugfs;
 
+        samsung->pm_nb.notifier_call = samsung_pm_notification;
+        register_pm_notifier(&samsung->pm_nb);
+
         samsung_platform_device = samsung->platform_device;
         return ret;
 
@@ -1633,6 +1670,7 @@ static void __exit samsung_exit(void)
         struct samsung_laptop *samsung;
 
         samsung = platform_get_drvdata(samsung_platform_device);
+        unregister_pm_notifier(&samsung->pm_nb);
 
         samsung_debugfs_exit(samsung);
         samsung_leds_exit(samsung);
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 15e61c16736e..d82f196e3cfe 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -3171,8 +3171,10 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
                 KEY_MICMUTE,    /* 0x1a: Mic mute (since ?400 or so) */
 
                 /* (assignments unknown, please report if found) */
-                KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
                 KEY_UNKNOWN,
+
+                /* Extra keys in use since the X240 / T440 / T540 */
+                KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_COMPUTER,
                 },
         };
 
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 46473ca7566b..76441dcbe5ff 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -56,6 +56,7 @@
 #include <linux/workqueue.h>
 #include <linux/i8042.h>
 #include <linux/acpi.h>
+#include <linux/dmi.h>
 #include <asm/uaccess.h>
 
 MODULE_AUTHOR("John Belmonte");
@@ -213,6 +214,30 @@ static const struct key_entry toshiba_acpi_keymap[] = {
         { KE_END, 0 },
 };
 
+/* alternative keymap */
+static const struct dmi_system_id toshiba_alt_keymap_dmi[] = {
+        {
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Satellite M840"),
+                },
+        },
+        {}
+};
+
+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, 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, 0x13f, { KEY_TOUCHPAD_TOGGLE } },
+        { KE_END, 0 },
+};
+
 /* utility
  */
 
@@ -1440,6 +1465,7 @@ static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
         acpi_handle ec_handle;
         int error;
         u32 hci_result;
+        const struct key_entry *keymap = toshiba_acpi_keymap;
 
         dev->hotkey_dev = input_allocate_device();
         if (!dev->hotkey_dev)
@@ -1449,7 +1475,9 @@ static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
         dev->hotkey_dev->phys = "toshiba_acpi/input0";
         dev->hotkey_dev->id.bustype = BUS_HOST;
 
-        error = sparse_keymap_setup(dev->hotkey_dev, toshiba_acpi_keymap, NULL);
+        if (dmi_check_system(toshiba_alt_keymap_dmi))
+                keymap = toshiba_acpi_alt_keymap;
+        error = sparse_keymap_setup(dev->hotkey_dev, keymap, NULL);
         if (error)
                 goto err_free_dev;