6 files changed, 792 insertions, 125 deletions

diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index fc5bf9d2a3f3..ec4faffe6b05 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -464,4 +464,16 @@ config TOSHIBA_BT_RFKILL
 
 	  If you have a modern Toshiba laptop with a Bluetooth and an
 	  RFKill switch (such as the Portege R500), say Y.
+
+config ACPI_CMPC
+	tristate "CMPC Laptop Extras"
+	depends on X86 && ACPI
+	select INPUT
+	select BACKLIGHT_CLASS_DEVICE
+	default n
+	help
+	  Support for Intel Classmate PC ACPI devices, including some
+	  keys as input device, backlight device, tablet and accelerometer
+	  devices.
+
 endif # X86_PLATFORM_DEVICES
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index b7474b6a8bf1..9cd9fa0a27e6 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -5,6 +5,7 @@
 obj-$(CONFIG_ASUS_LAPTOP)	+= asus-laptop.o
 obj-$(CONFIG_EEEPC_LAPTOP)	+= eeepc-laptop.o
 obj-$(CONFIG_MSI_LAPTOP)	+= msi-laptop.o
+obj-$(CONFIG_ACPI_CMPC)		+= classmate-laptop.o
 obj-$(CONFIG_COMPAL_LAPTOP)	+= compal-laptop.o
 obj-$(CONFIG_DELL_LAPTOP)	+= dell-laptop.o
 obj-$(CONFIG_DELL_WMI)		+= dell-wmi.o
diff --git a/drivers/platform/x86/classmate-laptop.c b/drivers/platform/x86/classmate-laptop.c
new file mode 100644
index 000000000000..ed90082cdf1d
--- /dev/null
+++ b/drivers/platform/x86/classmate-laptop.c
@@ -0,0 +1,609 @@
+/*
+ *  Copyright (C) 2009  Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
+ *
+ *  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.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/workqueue.h>
+#include <acpi/acpi_drivers.h>
+#include <linux/backlight.h>
+#include <linux/input.h>
+
+MODULE_LICENSE("GPL");
+
+
+struct cmpc_accel {
+	int sensitivity;
+};
+
+#define CMPC_ACCEL_SENSITIVITY_DEFAULT		5
+
+
+/*
+ * Generic input device code.
+ */
+
+typedef void (*input_device_init)(struct input_dev *dev);
+
+static int cmpc_add_acpi_notify_device(struct acpi_device *acpi, char *name,
+				       input_device_init idev_init)
+{
+	struct input_dev *inputdev;
+	int error;
+
+	inputdev = input_allocate_device();
+	if (!inputdev)
+		return -ENOMEM;
+	inputdev->name = name;
+	inputdev->dev.parent = &acpi->dev;
+	idev_init(inputdev);
+	error = input_register_device(inputdev);
+	if (error) {
+		input_free_device(inputdev);
+		return error;
+	}
+	dev_set_drvdata(&acpi->dev, inputdev);
+	return 0;
+}
+
+static int cmpc_remove_acpi_notify_device(struct acpi_device *acpi)
+{
+	struct input_dev *inputdev = dev_get_drvdata(&acpi->dev);
+	input_unregister_device(inputdev);
+	return 0;
+}
+
+/*
+ * Accelerometer code.
+ */
+static acpi_status cmpc_start_accel(acpi_handle handle)
+{
+	union acpi_object param[2];
+	struct acpi_object_list input;
+	acpi_status status;
+
+	param[0].type = ACPI_TYPE_INTEGER;
+	param[0].integer.value = 0x3;
+	param[1].type = ACPI_TYPE_INTEGER;
+	input.count = 2;
+	input.pointer = param;
+	status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
+	return status;
+}
+
+static acpi_status cmpc_stop_accel(acpi_handle handle)
+{
+	union acpi_object param[2];
+	struct acpi_object_list input;
+	acpi_status status;
+
+	param[0].type = ACPI_TYPE_INTEGER;
+	param[0].integer.value = 0x4;
+	param[1].type = ACPI_TYPE_INTEGER;
+	input.count = 2;
+	input.pointer = param;
+	status = acpi_evaluate_object(handle, "ACMD", &input, NULL);
+	return status;
+}
+
+static acpi_status cmpc_accel_set_sensitivity(acpi_handle handle, int val)
+{
+	union acpi_object param[2];
+	struct acpi_object_list input;
+
+	param[0].type = ACPI_TYPE_INTEGER;
+	param[0].integer.value = 0x02;
+	param[1].type = ACPI_TYPE_INTEGER;
+	param[1].integer.value = val;
+	input.count = 2;
+	input.pointer = param;
+	return acpi_evaluate_object(handle, "ACMD", &input, NULL);
+}
+
+static acpi_status cmpc_get_accel(acpi_handle handle,
+				  unsigned char *x,
+				  unsigned char *y,
+				  unsigned char *z)
+{
+	union acpi_object param[2];
+	struct acpi_object_list input;
+	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, 0 };
+	unsigned char *locs;
+	acpi_status status;
+
+	param[0].type = ACPI_TYPE_INTEGER;
+	param[0].integer.value = 0x01;
+	param[1].type = ACPI_TYPE_INTEGER;
+	input.count = 2;
+	input.pointer = param;
+	status = acpi_evaluate_object(handle, "ACMD", &input, &output);
+	if (ACPI_SUCCESS(status)) {
+		union acpi_object *obj;
+		obj = output.pointer;
+		locs = obj->buffer.pointer;
+		*x = locs[0];
+		*y = locs[1];
+		*z = locs[2];
+		kfree(output.pointer);
+	}
+	return status;
+}
+
+static void cmpc_accel_handler(struct acpi_device *dev, u32 event)
+{
+	if (event == 0x81) {
+		unsigned char x, y, z;
+		acpi_status status;
+
+		status = cmpc_get_accel(dev->handle, &x, &y, &z);
+		if (ACPI_SUCCESS(status)) {
+			struct input_dev *inputdev = dev_get_drvdata(&dev->dev);
+
+			input_report_abs(inputdev, ABS_X, x);
+			input_report_abs(inputdev, ABS_Y, y);
+			input_report_abs(inputdev, ABS_Z, z);
+			input_sync(inputdev);
+		}
+	}
+}
+
+static ssize_t cmpc_accel_sensitivity_show(struct device *dev,
+					   struct device_attribute *attr,
+					   char *buf)
+{
+	struct acpi_device *acpi;
+	struct input_dev *inputdev;
+	struct cmpc_accel *accel;
+
+	acpi = to_acpi_device(dev);
+	inputdev = dev_get_drvdata(&acpi->dev);
+	accel = dev_get_drvdata(&inputdev->dev);
+
+	return sprintf(buf, "%d\n", accel->sensitivity);
+}
+
+static ssize_t cmpc_accel_sensitivity_store(struct device *dev,
+					    struct device_attribute *attr,
+					    const char *buf, size_t count)
+{
+	struct acpi_device *acpi;
+	struct input_dev *inputdev;
+	struct cmpc_accel *accel;
+	unsigned long sensitivity;
+	int r;
+
+	acpi = to_acpi_device(dev);
+	inputdev = dev_get_drvdata(&acpi->dev);
+	accel = dev_get_drvdata(&inputdev->dev);
+
+	r = strict_strtoul(buf, 0, &sensitivity);
+	if (r)
+		return r;
+
+	accel->sensitivity = sensitivity;
+	cmpc_accel_set_sensitivity(acpi->handle, sensitivity);
+
+	return strnlen(buf, count);
+}
+
+struct device_attribute cmpc_accel_sensitivity_attr = {
+	.attr = { .name = "sensitivity", .mode = 0660 },
+	.show = cmpc_accel_sensitivity_show,
+	.store = cmpc_accel_sensitivity_store
+};
+
+static int cmpc_accel_open(struct input_dev *input)
+{
+	struct acpi_device *acpi;
+
+	acpi = to_acpi_device(input->dev.parent);
+	if (ACPI_SUCCESS(cmpc_start_accel(acpi->handle)))
+		return 0;
+	return -EIO;
+}
+
+static void cmpc_accel_close(struct input_dev *input)
+{
+	struct acpi_device *acpi;
+
+	acpi = to_acpi_device(input->dev.parent);
+	cmpc_stop_accel(acpi->handle);
+}
+
+static void cmpc_accel_idev_init(struct input_dev *inputdev)
+{
+	set_bit(EV_ABS, inputdev->evbit);
+	input_set_abs_params(inputdev, ABS_X, 0, 255, 8, 0);
+	input_set_abs_params(inputdev, ABS_Y, 0, 255, 8, 0);
+	input_set_abs_params(inputdev, ABS_Z, 0, 255, 8, 0);
+	inputdev->open = cmpc_accel_open;
+	inputdev->close = cmpc_accel_close;
+}
+
+static int cmpc_accel_add(struct acpi_device *acpi)
+{
+	int error;
+	struct input_dev *inputdev;
+	struct cmpc_accel *accel;
+
+	accel = kmalloc(sizeof(*accel), GFP_KERNEL);
+	if (!accel)
+		return -ENOMEM;
+
+	accel->sensitivity = CMPC_ACCEL_SENSITIVITY_DEFAULT;
+	cmpc_accel_set_sensitivity(acpi->handle, accel->sensitivity);
+
+	error = device_create_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
+	if (error)
+		goto failed_file;
+
+	error = cmpc_add_acpi_notify_device(acpi, "cmpc_accel",
+					    cmpc_accel_idev_init);
+	if (error)
+		goto failed_input;
+
+	inputdev = dev_get_drvdata(&acpi->dev);
+	dev_set_drvdata(&inputdev->dev, accel);
+
+	return 0;
+
+failed_input:
+	device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
+failed_file:
+	kfree(accel);
+	return error;
+}
+
+static int cmpc_accel_remove(struct acpi_device *acpi, int type)
+{
+	struct input_dev *inputdev;
+	struct cmpc_accel *accel;
+
+	inputdev = dev_get_drvdata(&acpi->dev);
+	accel = dev_get_drvdata(&inputdev->dev);
+
+	device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr);
+	return cmpc_remove_acpi_notify_device(acpi);
+}
+
+static const struct acpi_device_id cmpc_accel_device_ids[] = {
+	{"ACCE0000", 0},
+	{"", 0}
+};
+MODULE_DEVICE_TABLE(acpi, cmpc_accel_device_ids);
+
+static struct acpi_driver cmpc_accel_acpi_driver = {
+	.owner = THIS_MODULE,
+	.name = "cmpc_accel",
+	.class = "cmpc_accel",
+	.ids = cmpc_accel_device_ids,
+	.ops = {
+		.add = cmpc_accel_add,
+		.remove = cmpc_accel_remove,
+		.notify = cmpc_accel_handler,
+	}
+};
+
+
+/*
+ * Tablet mode code.
+ */
+static acpi_status cmpc_get_tablet(acpi_handle handle,
+				   unsigned long long *value)
+{
+	union acpi_object param;
+	struct acpi_object_list input;
+	unsigned long long output;
+	acpi_status status;
+
+	param.type = ACPI_TYPE_INTEGER;
+	param.integer.value = 0x01;
+	input.count = 1;
+	input.pointer = &param;
+	status = acpi_evaluate_integer(handle, "TCMD", &input, &output);
+	if (ACPI_SUCCESS(status))
+		*value = output;
+	return status;
+}
+
+static void cmpc_tablet_handler(struct acpi_device *dev, u32 event)
+{
+	unsigned long long val = 0;
+	struct input_dev *inputdev = dev_get_drvdata(&dev->dev);
+
+	if (event == 0x81) {
+		if (ACPI_SUCCESS(cmpc_get_tablet(dev->handle, &val)))
+			input_report_switch(inputdev, SW_TABLET_MODE, !val);
+	}
+}
+
+static void cmpc_tablet_idev_init(struct input_dev *inputdev)
+{
+	unsigned long long val = 0;
+	struct acpi_device *acpi;
+
+	set_bit(EV_SW, inputdev->evbit);
+	set_bit(SW_TABLET_MODE, inputdev->swbit);
+
+	acpi = to_acpi_device(inputdev->dev.parent);
+	if (ACPI_SUCCESS(cmpc_get_tablet(acpi->handle, &val)))
+		input_report_switch(inputdev, SW_TABLET_MODE, !val);
+}
+
+static int cmpc_tablet_add(struct acpi_device *acpi)
+{
+	return cmpc_add_acpi_notify_device(acpi, "cmpc_tablet",
+					   cmpc_tablet_idev_init);
+}
+
+static int cmpc_tablet_remove(struct acpi_device *acpi, int type)
+{
+	return cmpc_remove_acpi_notify_device(acpi);
+}
+
+static int cmpc_tablet_resume(struct acpi_device *acpi)
+{
+	struct input_dev *inputdev = dev_get_drvdata(&acpi->dev);
+	unsigned long long val = 0;
+	if (ACPI_SUCCESS(cmpc_get_tablet(acpi->handle, &val)))
+		input_report_switch(inputdev, SW_TABLET_MODE, !val);
+	return 0;
+}
+
+static const struct acpi_device_id cmpc_tablet_device_ids[] = {
+	{"TBLT0000", 0},
+	{"", 0}
+};
+MODULE_DEVICE_TABLE(acpi, cmpc_tablet_device_ids);
+
+static struct acpi_driver cmpc_tablet_acpi_driver = {
+	.owner = THIS_MODULE,
+	.name = "cmpc_tablet",
+	.class = "cmpc_tablet",
+	.ids = cmpc_tablet_device_ids,
+	.ops = {
+		.add = cmpc_tablet_add,
+		.remove = cmpc_tablet_remove,
+		.resume = cmpc_tablet_resume,
+		.notify = cmpc_tablet_handler,
+	}
+};
+
+
+/*
+ * Backlight code.
+ */
+
+static acpi_status cmpc_get_brightness(acpi_handle handle,
+				       unsigned long long *value)
+{
+	union acpi_object param;
+	struct acpi_object_list input;
+	unsigned long long output;
+	acpi_status status;
+
+	param.type = ACPI_TYPE_INTEGER;
+	param.integer.value = 0xC0;
+	input.count = 1;
+	input.pointer = &param;
+	status = acpi_evaluate_integer(handle, "GRDI", &input, &output);
+	if (ACPI_SUCCESS(status))
+		*value = output;
+	return status;
+}
+
+static acpi_status cmpc_set_brightness(acpi_handle handle,
+				       unsigned long long value)
+{
+	union acpi_object param[2];
+	struct acpi_object_list input;
+	acpi_status status;
+	unsigned long long output;
+
+	param[0].type = ACPI_TYPE_INTEGER;
+	param[0].integer.value = 0xC0;
+	param[1].type = ACPI_TYPE_INTEGER;
+	param[1].integer.value = value;
+	input.count = 2;
+	input.pointer = param;
+	status = acpi_evaluate_integer(handle, "GWRI", &input, &output);
+	return status;
+}
+
+static int cmpc_bl_get_brightness(struct backlight_device *bd)
+{
+	acpi_status status;
+	acpi_handle handle;
+	unsigned long long brightness;
+
+	handle = bl_get_data(bd);
+	status = cmpc_get_brightness(handle, &brightness);
+	if (ACPI_SUCCESS(status))
+		return brightness;
+	else
+		return -1;
+}
+
+static int cmpc_bl_update_status(struct backlight_device *bd)
+{
+	acpi_status status;
+	acpi_handle handle;
+
+	handle = bl_get_data(bd);
+	status = cmpc_set_brightness(handle, bd->props.brightness);
+	if (ACPI_SUCCESS(status))
+		return 0;
+	else
+		return -1;
+}
+
+static struct backlight_ops cmpc_bl_ops = {
+	.get_brightness = cmpc_bl_get_brightness,
+	.update_status = cmpc_bl_update_status
+};
+
+static int cmpc_bl_add(struct acpi_device *acpi)
+{
+	struct backlight_device *bd;
+
+	bd = backlight_device_register("cmpc_bl", &acpi->dev,
+				       acpi->handle, &cmpc_bl_ops);
+	bd->props.max_brightness = 7;
+	dev_set_drvdata(&acpi->dev, bd);
+	return 0;
+}
+
+static int cmpc_bl_remove(struct acpi_device *acpi, int type)
+{
+	struct backlight_device *bd;
+
+	bd = dev_get_drvdata(&acpi->dev);
+	backlight_device_unregister(bd);
+	return 0;
+}
+
+static const struct acpi_device_id cmpc_device_ids[] = {
+	{"IPML200", 0},
+	{"", 0}
+};
+MODULE_DEVICE_TABLE(acpi, cmpc_device_ids);
+
+static struct acpi_driver cmpc_bl_acpi_driver = {
+	.owner = THIS_MODULE,
+	.name = "cmpc",
+	.class = "cmpc",
+	.ids = cmpc_device_ids,
+	.ops = {
+		.add = cmpc_bl_add,
+		.remove = cmpc_bl_remove
+	}
+};
+
+
+/*
+ * Extra keys code.
+ */
+static int cmpc_keys_codes[] = {
+	KEY_UNKNOWN,
+	KEY_WLAN,
+	KEY_SWITCHVIDEOMODE,
+	KEY_BRIGHTNESSDOWN,
+	KEY_BRIGHTNESSUP,
+	KEY_VENDOR,
+	KEY_MAX
+};
+
+static void cmpc_keys_handler(struct acpi_device *dev, u32 event)
+{
+	struct input_dev *inputdev;
+	int code = KEY_MAX;
+
+	if ((event & 0x0F) < ARRAY_SIZE(cmpc_keys_codes))
+		code = cmpc_keys_codes[event & 0x0F];
+	inputdev = dev_get_drvdata(&dev->dev);;
+	input_report_key(inputdev, code, !(event & 0x10));
+}
+
+static void cmpc_keys_idev_init(struct input_dev *inputdev)
+{
+	int i;
+
+	set_bit(EV_KEY, inputdev->evbit);
+	for (i = 0; cmpc_keys_codes[i] != KEY_MAX; i++)
+		set_bit(cmpc_keys_codes[i], inputdev->keybit);
+}
+
+static int cmpc_keys_add(struct acpi_device *acpi)
+{
+	return cmpc_add_acpi_notify_device(acpi, "cmpc_keys",
+					   cmpc_keys_idev_init);
+}
+
+static int cmpc_keys_remove(struct acpi_device *acpi, int type)
+{
+	return cmpc_remove_acpi_notify_device(acpi);
+}
+
+static const struct acpi_device_id cmpc_keys_device_ids[] = {
+	{"FnBT0000", 0},
+	{"", 0}
+};
+MODULE_DEVICE_TABLE(acpi, cmpc_keys_device_ids);
+
+static struct acpi_driver cmpc_keys_acpi_driver = {
+	.owner = THIS_MODULE,
+	.name = "cmpc_keys",
+	.class = "cmpc_keys",
+	.ids = cmpc_keys_device_ids,
+	.ops = {
+		.add = cmpc_keys_add,
+		.remove = cmpc_keys_remove,
+		.notify = cmpc_keys_handler,
+	}
+};
+
+
+/*
+ * General init/exit code.
+ */
+
+static int cmpc_init(void)
+{
+	int r;
+
+	r = acpi_bus_register_driver(&cmpc_keys_acpi_driver);
+	if (r)
+		goto failed_keys;
+
+	r = acpi_bus_register_driver(&cmpc_bl_acpi_driver);
+	if (r)
+		goto failed_bl;
+
+	r = acpi_bus_register_driver(&cmpc_tablet_acpi_driver);
+	if (r)
+		goto failed_tablet;
+
+	r = acpi_bus_register_driver(&cmpc_accel_acpi_driver);
+	if (r)
+		goto failed_accel;
+
+	return r;
+
+failed_accel:
+	acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
+
+failed_tablet:
+	acpi_bus_unregister_driver(&cmpc_bl_acpi_driver);
+
+failed_bl:
+	acpi_bus_unregister_driver(&cmpc_keys_acpi_driver);
+
+failed_keys:
+	return r;
+}
+
+static void cmpc_exit(void)
+{
+	acpi_bus_unregister_driver(&cmpc_accel_acpi_driver);
+	acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver);
+	acpi_bus_unregister_driver(&cmpc_bl_acpi_driver);
+	acpi_bus_unregister_driver(&cmpc_keys_acpi_driver);
+}
+
+module_init(cmpc_init);
+module_exit(cmpc_exit);
diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index 3c2d0384b43b..5f3320d468f6 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -164,7 +164,7 @@ struct fujitsu_hotkey_t {
 	struct input_dev *input;
 	char phys[32];
 	struct platform_device *pf_device;
-	struct kfifo *fifo;
+	struct kfifo fifo;
 	spinlock_t fifo_lock;
 	int rfkill_supported;
 	int rfkill_state;
@@ -824,12 +824,10 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
 
 	/* kfifo */
 	spin_lock_init(&fujitsu_hotkey->fifo_lock);
-	fujitsu_hotkey->fifo =
-	    kfifo_alloc(RINGBUFFERSIZE * sizeof(int), GFP_KERNEL,
-			&fujitsu_hotkey->fifo_lock);
-	if (IS_ERR(fujitsu_hotkey->fifo)) {
+	error = kfifo_alloc(&fujitsu_hotkey->fifo, RINGBUFFERSIZE * sizeof(int),
+			GFP_KERNEL);
+	if (error) {
 		printk(KERN_ERR "kfifo_alloc failed\n");
-		error = PTR_ERR(fujitsu_hotkey->fifo);
 		goto err_stop;
 	}
 
@@ -934,7 +932,7 @@ err_unregister_input_dev:
 err_free_input_dev:
 	input_free_device(input);
 err_free_fifo:
-	kfifo_free(fujitsu_hotkey->fifo);
+	kfifo_free(&fujitsu_hotkey->fifo);
 err_stop:
 	return result;
 }
@@ -956,7 +954,7 @@ static int acpi_fujitsu_hotkey_remove(struct acpi_device *device, int type)
 
 	input_free_device(input);
 
-	kfifo_free(fujitsu_hotkey->fifo);
+	kfifo_free(&fujitsu_hotkey->fifo);
 
 	fujitsu_hotkey->acpi_handle = NULL;
 
@@ -1008,9 +1006,10 @@ static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
 				vdbg_printk(FUJLAPTOP_DBG_TRACE,
 					"Push keycode into ringbuffer [%d]\n",
 					keycode);
-				status = kfifo_put(fujitsu_hotkey->fifo,
+				status = kfifo_in_locked(&fujitsu_hotkey->fifo,
 						   (unsigned char *)&keycode,
-						   sizeof(keycode));
+						   sizeof(keycode),
+						   &fujitsu_hotkey->fifo_lock);
 				if (status != sizeof(keycode)) {
 					vdbg_printk(FUJLAPTOP_DBG_WARN,
 					    "Could not push keycode [0x%x]\n",
@@ -1021,11 +1020,12 @@ static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event)
 				}
 			} else if (keycode == 0) {
 				while ((status =
-					kfifo_get
-					(fujitsu_hotkey->fifo, (unsigned char *)
-					 &keycode_r,
-					 sizeof
-					 (keycode_r))) == sizeof(keycode_r)) {
+					kfifo_out_locked(
+					 &fujitsu_hotkey->fifo,
+					 (unsigned char *) &keycode_r,
+					 sizeof(keycode_r),
+					 &fujitsu_hotkey->fifo_lock))
+					 == sizeof(keycode_r)) {
 					input_report_key(input, keycode_r, 0);
 					input_sync(input);
 					vdbg_printk(FUJLAPTOP_DBG_TRACE,
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 7a2cc8a5c975..5af53340da6f 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -131,6 +131,7 @@ enum sony_nc_rfkill {
 	N_SONY_RFKILL,
 };
 
+static int sony_rfkill_handle;
 static struct rfkill *sony_rfkill_devices[N_SONY_RFKILL];
 static int sony_rfkill_address[N_SONY_RFKILL] = {0x300, 0x500, 0x700, 0x900};
 static void sony_nc_rfkill_update(void);
@@ -142,7 +143,7 @@ struct sony_laptop_input_s {
 	atomic_t		users;
 	struct input_dev	*jog_dev;
 	struct input_dev	*key_dev;
-	struct kfifo		*fifo;
+	struct kfifo		fifo;
 	spinlock_t		fifo_lock;
 	struct workqueue_struct	*wq;
 };
@@ -232,6 +233,7 @@ static int sony_laptop_input_index[] = {
 	56,	/* 69 SONYPI_EVENT_VOLUME_INC_PRESSED */
 	57,	/* 70 SONYPI_EVENT_VOLUME_DEC_PRESSED */
 	-1,	/* 71 SONYPI_EVENT_BRIGHTNESS_PRESSED */
+	58,	/* 72 SONYPI_EVENT_MEDIA_PRESSED */
 };
 
 static int sony_laptop_input_keycode_map[] = {
@@ -293,6 +295,7 @@ static int sony_laptop_input_keycode_map[] = {
 	KEY_F15,	/* 55 SONYPI_EVENT_SETTINGKEY_PRESSED */
 	KEY_VOLUMEUP,	/* 56 SONYPI_EVENT_VOLUME_INC_PRESSED */
 	KEY_VOLUMEDOWN,	/* 57 SONYPI_EVENT_VOLUME_DEC_PRESSED */
+	KEY_MEDIA,	/* 58 SONYPI_EVENT_MEDIA_PRESSED */
 };
 
 /* release buttons after a short delay if pressed */
@@ -300,8 +303,9 @@ static void do_sony_laptop_release_key(struct work_struct *work)
 {
 	struct sony_laptop_keypress kp;
 
-	while (kfifo_get(sony_laptop_input.fifo, (unsigned char *)&kp,
-			 sizeof(kp)) == sizeof(kp)) {
+	while (kfifo_out_locked(&sony_laptop_input.fifo, (unsigned char *)&kp,
+			sizeof(kp), &sony_laptop_input.fifo_lock)
+			== sizeof(kp)) {
 		msleep(10);
 		input_report_key(kp.dev, kp.key, 0);
 		input_sync(kp.dev);
@@ -362,8 +366,9 @@ static void sony_laptop_report_input_event(u8 event)
 		/* we emit the scancode so we can always remap the key */
 		input_event(kp.dev, EV_MSC, MSC_SCAN, event);
 		input_sync(kp.dev);
-		kfifo_put(sony_laptop_input.fifo,
-			  (unsigned char *)&kp, sizeof(kp));
+		kfifo_in_locked(&sony_laptop_input.fifo,
+			  (unsigned char *)&kp, sizeof(kp),
+			  &sony_laptop_input.fifo_lock);
 
 		if (!work_pending(&sony_laptop_release_key_work))
 			queue_work(sony_laptop_input.wq,
@@ -385,12 +390,10 @@ static int sony_laptop_setup_input(struct acpi_device *acpi_device)
 
 	/* kfifo */
 	spin_lock_init(&sony_laptop_input.fifo_lock);
-	sony_laptop_input.fifo =
-		kfifo_alloc(SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
-			    &sony_laptop_input.fifo_lock);
-	if (IS_ERR(sony_laptop_input.fifo)) {
+	error =
+	 kfifo_alloc(&sony_laptop_input.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL);
+	if (error) {
 		printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
-		error = PTR_ERR(sony_laptop_input.fifo);
 		goto err_dec_users;
 	}
 
@@ -474,7 +477,7 @@ err_destroy_wq:
 	destroy_workqueue(sony_laptop_input.wq);
 
 err_free_kfifo:
-	kfifo_free(sony_laptop_input.fifo);
+	kfifo_free(&sony_laptop_input.fifo);
 
 err_dec_users:
 	atomic_dec(&sony_laptop_input.users);
@@ -500,7 +503,7 @@ static void sony_laptop_remove_input(void)
 	}
 
 	destroy_workqueue(sony_laptop_input.wq);
-	kfifo_free(sony_laptop_input.fifo);
+	kfifo_free(&sony_laptop_input.fifo);
 }
 
 /*********** Platform Device ***********/
@@ -890,6 +893,8 @@ static struct sony_nc_event sony_100_events[] = {
 	{ 0x0C, SONYPI_EVENT_FNKEY_RELEASED },
 	{ 0x9f, SONYPI_EVENT_CD_EJECT_PRESSED },
 	{ 0x1f, SONYPI_EVENT_ANYBUTTON_RELEASED },
+	{ 0xa1, SONYPI_EVENT_MEDIA_PRESSED },
+	{ 0x21, SONYPI_EVENT_ANYBUTTON_RELEASED },
 	{ 0, 0 },
 };
 
@@ -961,7 +966,7 @@ static void sony_nc_notify(struct acpi_device *device, u32 event)
 				else
 					sony_laptop_report_input_event(ev);
 			}
-		} else if (sony_find_snc_handle(0x124) == ev) {
+		} else if (sony_find_snc_handle(sony_rfkill_handle) == ev) {
 			sony_nc_rfkill_update();
 			return;
 		}
@@ -1067,7 +1072,7 @@ static int sony_nc_rfkill_set(void *data, bool blocked)
 	if (!blocked)
 		argument |= 0xff0000;
 
-	return sony_call_snc_handle(0x124, argument, &result);
+	return sony_call_snc_handle(sony_rfkill_handle, argument, &result);
 }
 
 static const struct rfkill_ops sony_rfkill_ops = {
@@ -1110,7 +1115,7 @@ static int sony_nc_setup_rfkill(struct acpi_device *device,
 	if (!rfk)
 		return -ENOMEM;
 
-	sony_call_snc_handle(0x124, 0x200, &result);
+	sony_call_snc_handle(sony_rfkill_handle, 0x200, &result);
 	hwblock = !(result & 0x1);
 	rfkill_set_hw_state(rfk, hwblock);
 
@@ -1129,7 +1134,7 @@ static void sony_nc_rfkill_update()
 	int result;
 	bool hwblock;
 
-	sony_call_snc_handle(0x124, 0x200, &result);
+	sony_call_snc_handle(sony_rfkill_handle, 0x200, &result);
 	hwblock = !(result & 0x1);
 
 	for (i = 0; i < N_SONY_RFKILL; i++) {
@@ -1145,36 +1150,79 @@ static void sony_nc_rfkill_update()
 			continue;
 		}
 
-		sony_call_snc_handle(0x124, argument, &result);
+		sony_call_snc_handle(sony_rfkill_handle, argument, &result);
 		rfkill_set_states(sony_rfkill_devices[i],
 				  !(result & 0xf), false);
 	}
 }
 
-static int sony_nc_rfkill_setup(struct acpi_device *device)
+static void sony_nc_rfkill_setup(struct acpi_device *device)
 {
-	int result, ret;
+	int offset;
+	u8 dev_code, i;
+	acpi_status status;
+	struct acpi_object_list params;
+	union acpi_object in_obj;
+	union acpi_object *device_enum;
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 
-	if (sony_find_snc_handle(0x124) == -1)
-		return -1;
+	offset = sony_find_snc_handle(0x124);
+	if (offset == -1) {
+		offset = sony_find_snc_handle(0x135);
+		if (offset == -1)
+			return;
+		else
+			sony_rfkill_handle = 0x135;
+	} else
+		sony_rfkill_handle = 0x124;
+	dprintk("Found rkfill handle: 0x%.4x\n", sony_rfkill_handle);
 
-	ret = sony_call_snc_handle(0x124, 0xb00, &result);
-	if (ret) {
-		printk(KERN_INFO DRV_PFX
-		       "Unable to enumerate rfkill devices: %x\n", ret);
-		return ret;
+	/* need to read the whole buffer returned by the acpi call to SN06
+	 * here otherwise we may miss some features
+	 */
+	params.count = 1;
+	params.pointer = &in_obj;
+	in_obj.type = ACPI_TYPE_INTEGER;
+	in_obj.integer.value = offset;
+	status = acpi_evaluate_object(sony_nc_acpi_handle, "SN06", &params,
+			&buffer);
+	if (ACPI_FAILURE(status)) {
+		dprintk("Radio device enumeration failed\n");
+		return;
+	}
+
+	device_enum = (union acpi_object *) buffer.pointer;
+	if (!device_enum || device_enum->type != ACPI_TYPE_BUFFER) {
+		printk(KERN_ERR "Invalid SN06 return object 0x%.2x\n",
+				device_enum->type);
+		goto out_no_enum;
 	}
 
-	if (result & 0x1)
-		sony_nc_setup_rfkill(device, SONY_WIFI);
-	if (result & 0x2)
-		sony_nc_setup_rfkill(device, SONY_BLUETOOTH);
-	if (result & 0x1c)
-		sony_nc_setup_rfkill(device, SONY_WWAN);
-	if (result & 0x20)
-		sony_nc_setup_rfkill(device, SONY_WIMAX);
+	/* the buffer is filled with magic numbers describing the devices
+	 * available, 0xff terminates the enumeration
+	 */
+	while ((dev_code = *(device_enum->buffer.pointer + i)) != 0xff &&
+			i < device_enum->buffer.length) {
+		i++;
+		dprintk("Radio devices, looking at 0x%.2x\n", dev_code);
 
-	return 0;
+		if (dev_code == 0 && !sony_rfkill_devices[SONY_WIFI])
+			sony_nc_setup_rfkill(device, SONY_WIFI);
+
+		if (dev_code == 0x10 && !sony_rfkill_devices[SONY_BLUETOOTH])
+			sony_nc_setup_rfkill(device, SONY_BLUETOOTH);
+
+		if ((0xf0 & dev_code) == 0x20 &&
+				!sony_rfkill_devices[SONY_WWAN])
+			sony_nc_setup_rfkill(device, SONY_WWAN);
+
+		if (dev_code == 0x30 && !sony_rfkill_devices[SONY_WIMAX])
+			sony_nc_setup_rfkill(device, SONY_WIMAX);
+	}
+
+out_no_enum:
+	kfree(buffer.pointer);
+	return;
 }
 
 static int sony_nc_add(struct acpi_device *device)
@@ -2079,7 +2127,7 @@ static struct attribute_group spic_attribute_group = {
 
 struct sonypi_compat_s {
 	struct fasync_struct	*fifo_async;
-	struct kfifo		*fifo;
+	struct kfifo		fifo;
 	spinlock_t		fifo_lock;
 	wait_queue_head_t	fifo_proc_list;
 	atomic_t		open_count;
@@ -2104,12 +2152,12 @@ static int sonypi_misc_open(struct inode *inode, struct file *file)
 	/* Flush input queue on first open */
 	unsigned long flags;
 
-	spin_lock_irqsave(sonypi_compat.fifo->lock, flags);
+	spin_lock_irqsave(&sonypi_compat.fifo_lock, flags);
 
 	if (atomic_inc_return(&sonypi_compat.open_count) == 1)
-		__kfifo_reset(sonypi_compat.fifo);
+		kfifo_reset(&sonypi_compat.fifo);
 
-	spin_unlock_irqrestore(sonypi_compat.fifo->lock, flags);
+	spin_unlock_irqrestore(&sonypi_compat.fifo_lock, flags);
 
 	return 0;
 }
@@ -2120,17 +2168,18 @@ static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
 	ssize_t ret;
 	unsigned char c;
 
-	if ((kfifo_len(sonypi_compat.fifo) == 0) &&
+	if ((kfifo_len(&sonypi_compat.fifo) == 0) &&
 	    (file->f_flags & O_NONBLOCK))
 		return -EAGAIN;
 
 	ret = wait_event_interruptible(sonypi_compat.fifo_proc_list,
-				       kfifo_len(sonypi_compat.fifo) != 0);
+				       kfifo_len(&sonypi_compat.fifo) != 0);
 	if (ret)
 		return ret;
 
 	while (ret < count &&
-	       (kfifo_get(sonypi_compat.fifo, &c, sizeof(c)) == sizeof(c))) {
+	       (kfifo_out_locked(&sonypi_compat.fifo, &c, sizeof(c),
+			  &sonypi_compat.fifo_lock) == sizeof(c))) {
 		if (put_user(c, buf++))
 			return -EFAULT;
 		ret++;
@@ -2147,7 +2196,7 @@ static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
 static unsigned int sonypi_misc_poll(struct file *file, poll_table *wait)
 {
 	poll_wait(file, &sonypi_compat.fifo_proc_list, wait);
-	if (kfifo_len(sonypi_compat.fifo))
+	if (kfifo_len(&sonypi_compat.fifo))
 		return POLLIN | POLLRDNORM;
 	return 0;
 }
@@ -2309,7 +2358,8 @@ static struct miscdevice sonypi_misc_device = {
 
 static void sonypi_compat_report_event(u8 event)
 {
-	kfifo_put(sonypi_compat.fifo, (unsigned char *)&event, sizeof(event));
+	kfifo_in_locked(&sonypi_compat.fifo, (unsigned char *)&event,
+			sizeof(event), &sonypi_compat.fifo_lock);
 	kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
 	wake_up_interruptible(&sonypi_compat.fifo_proc_list);
 }
@@ -2319,11 +2369,11 @@ static int sonypi_compat_init(void)
 	int error;
 
 	spin_lock_init(&sonypi_compat.fifo_lock);
-	sonypi_compat.fifo = kfifo_alloc(SONY_LAPTOP_BUF_SIZE, GFP_KERNEL,
-					 &sonypi_compat.fifo_lock);
-	if (IS_ERR(sonypi_compat.fifo)) {
+	error =
+	 kfifo_alloc(&sonypi_compat.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL);
+	if (error) {
 		printk(KERN_ERR DRV_PFX "kfifo_alloc failed\n");
-		return PTR_ERR(sonypi_compat.fifo);
+		return error;
 	}
 
 	init_waitqueue_head(&sonypi_compat.fifo_proc_list);
@@ -2342,14 +2392,14 @@ static int sonypi_compat_init(void)
 	return 0;
 
 err_free_kfifo:
-	kfifo_free(sonypi_compat.fifo);
+	kfifo_free(&sonypi_compat.fifo);
 	return error;
 }
 
 static void sonypi_compat_exit(void)
 {
 	misc_deregister(&sonypi_misc_device);
-	kfifo_free(sonypi_compat.fifo);
+	kfifo_free(&sonypi_compat.fifo);
 }
 #else
 static int sonypi_compat_init(void) { return 0; }
diff --git a/drivers/platform/x86/tc1100-wmi.c b/drivers/platform/x86/tc1100-wmi.c
index 44166003d4ef..dd33b51c3486 100644
--- a/drivers/platform/x86/tc1100-wmi.c
+++ b/drivers/platform/x86/tc1100-wmi.c
@@ -47,22 +47,6 @@ MODULE_DESCRIPTION("HP Compaq TC1100 Tablet WMI Extras");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("wmi:C364AC71-36DB-495A-8494-B439D472A505");
 
-static int tc1100_probe(struct platform_device *device);
-static int tc1100_remove(struct platform_device *device);
-static int tc1100_suspend(struct platform_device *device, pm_message_t state);
-static int tc1100_resume(struct platform_device *device);
-
-static struct platform_driver tc1100_driver = {
-	.driver = {
-		.name = "tc1100-wmi",
-		.owner = THIS_MODULE,
-	},
-	.probe = tc1100_probe,
-	.remove = tc1100_remove,
-	.suspend = tc1100_suspend,
-	.resume = tc1100_resume,
-};
-
 static struct platform_device *tc1100_device;
 
 struct tc1100_data {
@@ -183,51 +167,35 @@ static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \
 show_set_bool(wireless, TC1100_INSTANCE_WIRELESS);
 show_set_bool(jogdial, TC1100_INSTANCE_JOGDIAL);
 
-static void remove_fs(void)
-{
-	device_remove_file(&tc1100_device->dev, &dev_attr_wireless);
-	device_remove_file(&tc1100_device->dev, &dev_attr_jogdial);
-}
-
-static int add_fs(void)
-{
-	int ret;
-
-	ret = device_create_file(&tc1100_device->dev, &dev_attr_wireless);
-	if (ret)
-		goto add_sysfs_error;
-
-	ret = device_create_file(&tc1100_device->dev, &dev_attr_jogdial);
-	if (ret)
-		goto add_sysfs_error;
-
-	return ret;
+static struct attribute *tc1100_attributes[] = {
+	&dev_attr_wireless.attr,
+	&dev_attr_jogdial.attr,
+	NULL
+};
 
-add_sysfs_error:
-	remove_fs();
-	return ret;
-}
+static struct attribute_group tc1100_attribute_group = {
+	.attrs	= tc1100_attributes,
+};
 
 /* --------------------------------------------------------------------------
 				Driver Model
    -------------------------------------------------------------------------- */
 
-static int tc1100_probe(struct platform_device *device)
+static int __init tc1100_probe(struct platform_device *device)
 {
-	int result = 0;
-
-	result = add_fs();
-	return result;
+	return sysfs_create_group(&device->dev.kobj, &tc1100_attribute_group);
 }
 
 
-static int tc1100_remove(struct platform_device *device)
+static int __devexit tc1100_remove(struct platform_device *device)
 {
-	remove_fs();
+	sysfs_remove_group(&device->dev.kobj, &tc1100_attribute_group);
+
 	return 0;
 }
 
-static int tc1100_suspend(struct platform_device *dev, pm_message_t state)
+#ifdef CONFIG_PM
+static int tc1100_suspend(struct device *dev)
 {
 	int ret;
 
@@ -239,10 +207,10 @@ static int tc1100_suspend(struct platform_device *dev, pm_message_t state)
 	if (ret)
 		return ret;
 
-	return ret;
+	return 0;
 }
 
-static int tc1100_resume(struct platform_device *dev)
+static int tc1100_resume(struct device *dev)
 {
 	int ret;
 
@@ -254,34 +222,61 @@ static int tc1100_resume(struct platform_device *dev)
 	if (ret)
 		return ret;
 
-	return ret;
+	return 0;
 }
 
+static const struct dev_pm_ops tc1100_pm_ops = {
+	.suspend	= tc1100_suspend,
+	.resume		= tc1100_resume,
+	.freeze		= tc1100_suspend,
+	.restore	= tc1100_resume,
+};
+#endif
+
+static struct platform_driver tc1100_driver = {
+	.driver = {
+		.name = "tc1100-wmi",
+		.owner = THIS_MODULE,
+#ifdef CONFIG_PM
+		.pm = &tc1100_pm_ops,
+#endif
+	},
+	.remove = __devexit_p(tc1100_remove),
+};
+
 static int __init tc1100_init(void)
 {
-	int result = 0;
+	int error;
 
 	if (!wmi_has_guid(GUID))
 		return -ENODEV;
 
-	result = platform_driver_register(&tc1100_driver);
-	if (result)
-		return result;
-
 	tc1100_device = platform_device_alloc("tc1100-wmi", -1);
-	platform_device_add(tc1100_device);
+	if (!tc1100_device)
+		return -ENOMEM;
+
+	error = platform_device_add(tc1100_device);
+	if (error)
+		goto err_device_put;
+
+	error = platform_driver_probe(&tc1100_driver, tc1100_probe);
+	if (error)
+		goto err_device_del;
 
 	printk(TC1100_INFO "HP Compaq TC1100 Tablet WMI Extras loaded\n");
+	return 0;
 
-	return result;
+ err_device_del:
+	platform_device_del(tc1100_device);
+ err_device_put:
+	platform_device_put(tc1100_device);
+	return error;
 }
 
 static void __exit tc1100_exit(void)
 {
-	platform_device_del(tc1100_device);
+	platform_device_unregister(tc1100_device);
 	platform_driver_unregister(&tc1100_driver);
-
-	printk(TC1100_INFO "HP Compaq TC1100 Tablet WMI Extras unloaded\n");
 }
 
 module_init(tc1100_init);