Pull sysfs into test branch

Conflicts:

	Documentation/feature-removal-schedule.txt
	include/acpi/acpi_drivers.h

Signed-off-by: Len Brown <len.brown@intel.com>

15 files changed, 689 insertions, 704 deletions

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 1422a11b5bb..5c087a5bddf 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -77,6 +77,20 @@ config ACPI_SLEEP_PROC_SLEEP
 	  Create /proc/acpi/sleep
 	  Deprecated by /sys/power/state
 
+config ACPI_PROCFS
+	bool "Procfs interface (deprecated)"
+	depends on ACPI
+	default y
+	---help---
+	  Procfs interface for ACPI is made optional for back-compatible.
+	  As the same functions are duplicated in sysfs interface
+	  and this proc interface will be removed some time later,
+	  it's marked as deprecated.
+	  ( /proc/acpi/debug_layer && debug_level are deprecated by
+	    /sys/module/acpi/parameters/debug_layer && debug_level.
+	    /proc/acpi/info is deprecated by
+	    /sys/module/acpi/parameters/acpica_version )
+
 config ACPI_AC
 	tristate "AC Adapter"
 	depends on X86
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 1a738056558..399b0e8c41c 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -37,6 +37,7 @@ endif
 
 obj-y				+= sleep/
 obj-y				+= bus.o glue.o
+obj-y				+= scan.o motherboard.o
 obj-$(CONFIG_ACPI_AC) 		+= ac.o
 obj-$(CONFIG_ACPI_BATTERY)	+= battery.o
 obj-$(CONFIG_ACPI_BUTTON)	+= button.o
@@ -57,7 +58,6 @@ obj-$(CONFIG_ACPI_NUMA)		+= numa.o
 obj-$(CONFIG_ACPI_ASUS)		+= asus_acpi.o
 obj-$(CONFIG_ACPI_IBM)		+= ibm_acpi.o
 obj-$(CONFIG_ACPI_TOSHIBA)	+= toshiba_acpi.o
-obj-y				+= scan.o motherboard.o
 obj-$(CONFIG_ACPI_HOTPLUG_MEMORY)	+= acpi_memhotplug.o
 obj-y				+= cm_sbs.o
 obj-$(CONFIG_ACPI_SBS)		+= i2c_ec.o sbs.o
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 5f43e0d1489..2f4521a48fe 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -64,7 +64,7 @@ extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
 
 static int acpi_battery_add(struct acpi_device *device);
 static int acpi_battery_remove(struct acpi_device *device, int type);
-static int acpi_battery_resume(struct acpi_device *device, int status);
+static int acpi_battery_resume(struct acpi_device *device);
 
 static struct acpi_driver acpi_battery_driver = {
 	.name = ACPI_BATTERY_DRIVER_NAME,
@@ -753,7 +753,7 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
 }
 
 /* this is needed to learn about changes made in suspended state */
-static int acpi_battery_resume(struct acpi_device *device, int state)
+static int acpi_battery_resume(struct acpi_device *device)
 {
 	struct acpi_battery *battery;
 
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 15d677e6cee..c26468da429 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -192,7 +192,7 @@ int acpi_bus_set_power(acpi_handle handle, int state)
 
 	if (!device->flags.power_manageable) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device `[%s]' is not power manageable\n",
-				device->kobj.name));
+				device->dev.kobj.name));
 		return -ENODEV;
 	}
 	/*
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index ac860583c20..c726612fafb 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -75,7 +75,7 @@ static int acpi_button_state_open_fs(struct inode *inode, struct file *file);
 static struct acpi_driver acpi_button_driver = {
 	.name = ACPI_BUTTON_DRIVER_NAME,
 	.class = ACPI_BUTTON_CLASS,
-	.ids = "ACPI_FPB,ACPI_FSB,PNP0C0D,PNP0C0C,PNP0C0E",
+	.ids = "button_power,button_sleep,PNP0C0D,PNP0C0C,PNP0C0E",
 	.ops = {
 		.add = acpi_button_add,
 		.remove = acpi_button_remove,
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 0a1863ec91f..69a68fd394c 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -167,7 +167,7 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
 			if (ACPI_FAILURE(status) || !device) {
 				result = container_device_add(&device, handle);
 				if (!result)
-					kobject_uevent(&device->kobj,
+					kobject_uevent(&device->dev.kobj,
 						       KOBJ_ONLINE);
 				else
 					printk("Failed to add container\n");
@@ -175,13 +175,13 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
 		} else {
 			if (ACPI_SUCCESS(status)) {
 				/* device exist and this is a remove request */
-				kobject_uevent(&device->kobj, KOBJ_OFFLINE);
+				kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
 			}
 		}
 		break;
 	case ACPI_NOTIFY_EJECT_REQUEST:
 		if (!acpi_bus_get_device(handle, &device) && device) {
-			kobject_uevent(&device->kobj, KOBJ_OFFLINE);
+			kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
 		}
 		break;
 	default:
diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c
index 35c6af8a83c..d48f65a8f65 100644
--- a/drivers/acpi/debug.c
+++ b/drivers/acpi/debug.c
@@ -13,14 +13,11 @@
 
 #define _COMPONENT		ACPI_SYSTEM_COMPONENT
 ACPI_MODULE_NAME("debug")
-#define ACPI_SYSTEM_FILE_DEBUG_LAYER	"debug_layer"
-#define ACPI_SYSTEM_FILE_DEBUG_LEVEL	"debug_level"
+
 #ifdef MODULE_PARAM_PREFIX
 #undef MODULE_PARAM_PREFIX
 #endif
-#define MODULE_PARAM_PREFIX
-    module_param(acpi_dbg_layer, uint, 0400);
-module_param(acpi_dbg_level, uint, 0400);
+#define MODULE_PARAM_PREFIX "acpi."
 
 struct acpi_dlayer {
 	const char *name;
@@ -86,6 +83,60 @@ static const struct acpi_dlevel acpi_debug_levels[] = {
 	ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
 };
 
+/* --------------------------------------------------------------------------
+                              FS Interface (/sys)
+   -------------------------------------------------------------------------- */
+static int param_get_debug_layer(char *buffer, struct kernel_param *kp) {
+	int result = 0;
+	int i;
+
+	result = sprintf(buffer, "%-25s\tHex        SET\n", "Description");
+
+	for(i = 0; i <ARRAY_SIZE(acpi_debug_layers); i++) {
+		result += sprintf(buffer+result, "%-25s\t0x%08lX [%c]\n",
+					acpi_debug_layers[i].name,
+					acpi_debug_layers[i].value,
+					(acpi_dbg_layer & acpi_debug_layers[i].value) ? '*' : ' ');
+	}
+	result += sprintf(buffer+result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
+					ACPI_ALL_DRIVERS,
+					(acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
+					ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer &
+					ACPI_ALL_DRIVERS) == 0 ? ' ' : '-');
+	result += sprintf(buffer+result, "--\ndebug_layer = 0x%08X ( * = enabled)\n", acpi_dbg_layer);
+
+	return result;
+}
+
+static int param_get_debug_level(char *buffer, struct kernel_param *kp) {
+	int result = 0;
+	int i;
+
+	result = sprintf(buffer, "%-25s\tHex        SET\n", "Description");
+
+	for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
+		result += sprintf(buffer+result, "%-25s\t0x%08lX [%c]\n",
+				     acpi_debug_levels[i].name,
+				     acpi_debug_levels[i].value,
+				     (acpi_dbg_level & acpi_debug_levels[i].
+				      value) ? '*' : ' ');
+	}
+	result += sprintf(buffer+result, "--\ndebug_level = 0x%08X (* = enabled)\n",
+			     acpi_dbg_level);
+
+	return result;
+}
+
+module_param_call(debug_layer, param_set_uint, param_get_debug_layer, &acpi_dbg_layer, 0644);
+module_param_call(debug_level, param_set_uint, param_get_debug_level, &acpi_dbg_level, 0644);
+
+/* --------------------------------------------------------------------------
+                              FS Interface (/proc)
+   -------------------------------------------------------------------------- */
+#ifdef CONFIG_ACPI_PROCFS
+#define ACPI_SYSTEM_FILE_DEBUG_LAYER	"debug_layer"
+#define ACPI_SYSTEM_FILE_DEBUG_LEVEL		"debug_level"
+
 static int
 acpi_system_read_debug(char *page,
 		       char **start, off_t off, int count, int *eof, void *data)
@@ -221,3 +272,4 @@ static int __init acpi_debug_init(void)
 }
 
 subsys_initcall(acpi_debug_init);
+#endif
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index f305a826ca2..af22fdf7341 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -48,8 +48,8 @@ MODULE_LICENSE("GPL");
 
 static int acpi_fan_add(struct acpi_device *device);
 static int acpi_fan_remove(struct acpi_device *device, int type);
-static int acpi_fan_suspend(struct acpi_device *device, int state);
-static int acpi_fan_resume(struct acpi_device *device, int state);
+static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state);
+static int acpi_fan_resume(struct acpi_device *device);
 
 static struct acpi_driver acpi_fan_driver = {
 	.name = ACPI_FAN_DRIVER_NAME,
@@ -237,7 +237,7 @@ static int acpi_fan_remove(struct acpi_device *device, int type)
 	return 0;
 }
 
-static int acpi_fan_suspend(struct acpi_device *device, int state)
+static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state)
 {
 	if (!device)
 		return -EINVAL;
@@ -247,7 +247,7 @@ static int acpi_fan_suspend(struct acpi_device *device, int state)
 	return AE_OK;
 }
 
-static int acpi_fan_resume(struct acpi_device *device, int state)
+static int acpi_fan_resume(struct acpi_device *device)
 {
 	int result = 0;
 	int power_state = 0;
diff --git a/drivers/acpi/motherboard.c b/drivers/acpi/motherboard.c
index b61107b0526..8f13b4f3e90 100644
--- a/drivers/acpi/motherboard.c
+++ b/drivers/acpi/motherboard.c
@@ -33,8 +33,7 @@
 ACPI_MODULE_NAME("acpi_motherboard")
 
 /* Dell use PNP0C01 instead of PNP0C02 */
-#define ACPI_MB_HID1			"PNP0C01"
-#define ACPI_MB_HID2			"PNP0C02"
+#define ACPI_MB_HID			"PNP0C01,PNP0C02"
 /**
  * Doesn't care about legacy IO ports, only IO ports beyond 0x1000 are reserved
  * Doesn't care about the failure of 'request_region', since other may reserve
@@ -110,19 +109,10 @@ static int acpi_motherboard_add(struct acpi_device *device)
 	return 0;
 }
 
-static struct acpi_driver acpi_motherboard_driver1 = {
+static struct acpi_driver acpi_motherboard_driver = {
 	.name = "motherboard",
 	.class = "",
-	.ids = ACPI_MB_HID1,
-	.ops = {
-		.add = acpi_motherboard_add,
-		},
-};
-
-static struct acpi_driver acpi_motherboard_driver2 = {
-	.name = "motherboard",
-	.class = "",
-	.ids = ACPI_MB_HID2,
+	.ids = ACPI_MB_HID,
 	.ops = {
 		.add = acpi_motherboard_add,
 		},
@@ -173,8 +163,7 @@ static void __init acpi_reserve_resources(void)
 
 static int __init acpi_motherboard_init(void)
 {
-	acpi_bus_register_driver(&acpi_motherboard_driver1);
-	acpi_bus_register_driver(&acpi_motherboard_driver2);
+	acpi_bus_register_driver(&acpi_motherboard_driver);
 	/*
 	 * Guarantee motherboard IO reservation first
 	 * This module must run after scan.c
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 1f06229040a..4ecf701687e 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -165,6 +165,21 @@ static acpi_status try_get_root_bridge_busnr(acpi_handle handle, int *busnum)
 	return AE_OK;
 }
 
+static void acpi_pci_bridge_scan(struct acpi_device *device)
+{
+	int status;
+	struct acpi_device *child = NULL;
+
+	if (device->flags.bus_address)
+		if (device->parent && device->parent->ops.bind) {
+			status = device->parent->ops.bind(device);
+			if (!status) {
+				list_for_each_entry(child, &device->children, node)
+					acpi_pci_bridge_scan(child);
+			}
+		}
+}
+
 static int acpi_pci_root_add(struct acpi_device *device)
 {
 	int result = 0;
@@ -173,6 +188,7 @@ static int acpi_pci_root_add(struct acpi_device *device)
 	acpi_status status = AE_OK;
 	unsigned long value = 0;
 	acpi_handle handle = NULL;
+	struct acpi_device *child;
 
 
 	if (!device)
@@ -188,9 +204,6 @@ static int acpi_pci_root_add(struct acpi_device *device)
 	strcpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS);
 	acpi_driver_data(device) = root;
 
-	/*
-	 * TBD: Doesn't the bus driver automatically set this?
-	 */
 	device->ops.bind = acpi_pci_bind;
 
 	/* 
@@ -312,6 +325,12 @@ static int acpi_pci_root_add(struct acpi_device *device)
 		result = acpi_pci_irq_add_prt(device->handle, root->id.segment,
 					      root->id.bus);
 
+	/*
+	 * Scan and bind all _ADR-Based Devices
+	 */
+	list_for_each_entry(child, &device->children, node)
+		acpi_pci_bridge_scan(child);
+
       end:
 	if (result) {
 		if (!list_empty(&root->node))
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index eacf9a25201..0079bc51082 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -814,7 +814,7 @@ int acpi_processor_device_add(acpi_handle handle, struct acpi_device **device)
 		return -ENODEV;
 
 	if ((pr->id >= 0) && (pr->id < NR_CPUS)) {
-		kobject_uevent(&(*device)->kobj, KOBJ_ONLINE);
+		kobject_uevent(&(*device)->dev.kobj, KOBJ_ONLINE);
 	}
 	return 0;
 }
@@ -852,13 +852,13 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data)
 		}
 
 		if (pr->id >= 0 && (pr->id < NR_CPUS)) {
-			kobject_uevent(&device->kobj, KOBJ_OFFLINE);
+			kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
 			break;
 		}
 
 		result = acpi_processor_start(device);
 		if ((!result) && ((pr->id >= 0) && (pr->id < NR_CPUS))) {
-			kobject_uevent(&device->kobj, KOBJ_ONLINE);
+			kobject_uevent(&device->dev.kobj, KOBJ_ONLINE);
 		} else {
 			printk(KERN_ERR PREFIX "Device [%s] failed to start\n",
 				    acpi_device_bid(device));
@@ -881,7 +881,7 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data)
 		}
 
 		if ((pr->id < NR_CPUS) && (cpu_present(pr->id)))
-			kobject_uevent(&device->kobj, KOBJ_OFFLINE);
+			kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
 		break;
 	default:
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 0de45866464..5049230ccf4 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -21,101 +21,305 @@ extern struct acpi_device *acpi_root;
 #define ACPI_BUS_DEVICE_NAME		"System Bus"
 
 static LIST_HEAD(acpi_device_list);
+static LIST_HEAD(acpi_bus_id_list);
 DEFINE_SPINLOCK(acpi_device_lock);
 LIST_HEAD(acpi_wakeup_device_list);
 
+struct acpi_device_bus_id{
+	char bus_id[15];
+	unsigned int instance_no;
+	struct list_head node;
+};
+static int acpi_eject_operation(acpi_handle handle, int lockable)
+{
+	struct acpi_object_list arg_list;
+	union acpi_object arg;
+	acpi_status status = AE_OK;
+
+	/*
+	 * TBD: evaluate _PS3?
+	 */
+
+	if (lockable) {
+		arg_list.count = 1;
+		arg_list.pointer = &arg;
+		arg.type = ACPI_TYPE_INTEGER;
+		arg.integer.value = 0;
+		acpi_evaluate_object(handle, "_LCK", &arg_list, NULL);
+	}
+
+	arg_list.count = 1;
+	arg_list.pointer = &arg;
+	arg.type = ACPI_TYPE_INTEGER;
+	arg.integer.value = 1;
 
-static void acpi_device_release(struct kobject *kobj)
+	/*
+	 * TBD: _EJD support.
+	 */
+
+	status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL);
+	if (ACPI_FAILURE(status)) {
+		return (-ENODEV);
+	}
+
+	return (0);
+}
+
+static ssize_t
+acpi_eject_store(struct device *d, struct device_attribute *attr,
+		const char *buf, size_t count)
 {
-	struct acpi_device *dev = container_of(kobj, struct acpi_device, kobj);
-	kfree(dev->pnp.cid_list);
-	kfree(dev);
+	int result;
+	int ret = count;
+	int islockable;
+	acpi_status status;
+	acpi_handle handle;
+	acpi_object_type type = 0;
+	struct acpi_device *acpi_device = to_acpi_device(d);
+
+	if ((!count) || (buf[0] != '1')) {
+		return -EINVAL;
+	}
+#ifndef FORCE_EJECT
+	if (acpi_device->driver == NULL) {
+		ret = -ENODEV;
+		goto err;
+	}
+#endif
+	status = acpi_get_type(acpi_device->handle, &type);
+	if (ACPI_FAILURE(status) || (!acpi_device->flags.ejectable)) {
+		ret = -ENODEV;
+		goto err;
+	}
+
+	islockable = acpi_device->flags.lockable;
+	handle = acpi_device->handle;
+
+	result = acpi_bus_trim(acpi_device, 1);
+
+	if (!result)
+		result = acpi_eject_operation(handle, islockable);
+
+	if (result) {
+		ret = -EBUSY;
+	}
+      err:
+	return ret;
 }
 
-struct acpi_device_attribute {
-	struct attribute attr;
-	 ssize_t(*show) (struct acpi_device *, char *);
-	 ssize_t(*store) (struct acpi_device *, const char *, size_t);
-};
+static DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store);
 
-typedef void acpi_device_sysfs_files(struct kobject *,
-				     const struct attribute *);
+static ssize_t
+acpi_device_hid_show(struct device *dev, struct device_attribute *attr, char *buf) {
+	struct acpi_device *acpi_dev = to_acpi_device(dev);
 
-static void setup_sys_fs_device_files(struct acpi_device *dev,
-				      acpi_device_sysfs_files * func);
+	return sprintf(buf, "%s\n", acpi_dev->pnp.hardware_id);
+}
+static DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL);
 
-#define create_sysfs_device_files(dev)	\
-	setup_sys_fs_device_files(dev, (acpi_device_sysfs_files *)&sysfs_create_file)
-#define remove_sysfs_device_files(dev)	\
-	setup_sys_fs_device_files(dev, (acpi_device_sysfs_files *)&sysfs_remove_file)
+static ssize_t
+acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *buf) {
+	struct acpi_device *acpi_dev = to_acpi_device(dev);
+	struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL};
+	int result;
+
+	result = acpi_get_name(acpi_dev->handle, ACPI_FULL_PATHNAME, &path);
+	if(result)
+		goto end;
 
-#define to_acpi_device(n) container_of(n, struct acpi_device, kobj)
-#define to_handle_attr(n) container_of(n, struct acpi_device_attribute, attr);
+	result = sprintf(buf, "%s\n", (char*)path.pointer);
+	kfree(path.pointer);
+  end:
+	return result;
+}
+static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL);
 
-static ssize_t acpi_device_attr_show(struct kobject *kobj,
-				     struct attribute *attr, char *buf)
+static int acpi_device_setup_files(struct acpi_device *dev)
 {
-	struct acpi_device *device = to_acpi_device(kobj);
-	struct acpi_device_attribute *attribute = to_handle_attr(attr);
-	return attribute->show ? attribute->show(device, buf) : -EIO;
+	acpi_status status;
+	acpi_handle temp;
+	int result = 0;
+
+	/*
+	 * Devices gotten from FADT don't have a "path" attribute
+	 */
+	if(dev->handle) {
+		result = device_create_file(&dev->dev, &dev_attr_path);
+		if(result)
+			goto end;
+	}
+
+	if(dev->flags.hardware_id) {
+		result = device_create_file(&dev->dev, &dev_attr_hid);
+		if(result)
+			goto end;
+	}
+
+        /*
+         * If device has _EJ0, 'eject' file is created that is used to trigger
+         * hot-removal function from userland.
+         */
+	status = acpi_get_handle(dev->handle, "_EJ0", &temp);
+	if (ACPI_SUCCESS(status))
+		result = device_create_file(&dev->dev, &dev_attr_eject);
+  end:
+	return result;
 }
-static ssize_t acpi_device_attr_store(struct kobject *kobj,
-				      struct attribute *attr, const char *buf,
-				      size_t len)
+
+static void acpi_device_remove_files(struct acpi_device *dev)
 {
-	struct acpi_device *device = to_acpi_device(kobj);
-	struct acpi_device_attribute *attribute = to_handle_attr(attr);
-	return attribute->store ? attribute->store(device, buf, len) : -EIO;
+	acpi_status status;
+	acpi_handle temp;
+
+	/*
+	 * If device has _EJ0, 'eject' file is created that is used to trigger
+	 * hot-removal function from userland.
+	 */
+	status = acpi_get_handle(dev->handle, "_EJ0", &temp);
+	if (ACPI_SUCCESS(status))
+		device_remove_file(&dev->dev, &dev_attr_eject);
+
+	if(dev->flags.hardware_id)
+		device_remove_file(&dev->dev, &dev_attr_hid);
+	if(dev->handle)
+		device_remove_file(&dev->dev, &dev_attr_path);
 }
+/* --------------------------------------------------------------------------
+			ACPI Bus operations
+   -------------------------------------------------------------------------- */
+static void acpi_device_release(struct device *dev)
+{
+	struct acpi_device *acpi_dev = to_acpi_device(dev);
 
-static struct sysfs_ops acpi_device_sysfs_ops = {
-	.show = acpi_device_attr_show,
-	.store = acpi_device_attr_store,
-};
+	kfree(acpi_dev->pnp.cid_list);
+	kfree(acpi_dev);
+}
 
-static struct kobj_type ktype_acpi_ns = {
-	.sysfs_ops = &acpi_device_sysfs_ops,
-	.release = acpi_device_release,
-};
+static int acpi_device_suspend(struct device *dev, pm_message_t state)
+{
+	struct acpi_device *acpi_dev = to_acpi_device(dev);
+	struct acpi_driver *acpi_drv = acpi_dev->driver;
+
+	if (acpi_drv && acpi_drv->ops.suspend)
+		return acpi_drv->ops.suspend(acpi_dev, state);
+	return 0;
+}
 
-static int namespace_uevent(struct kset *kset, struct kobject *kobj,
-			     char **envp, int num_envp, char *buffer,
-			     int buffer_size)
+static int acpi_device_resume(struct device *dev)
 {
-	struct acpi_device *dev = to_acpi_device(kobj);
-	int i = 0;
-	int len = 0;
+	struct acpi_device *acpi_dev = to_acpi_device(dev);
+	struct acpi_driver *acpi_drv = acpi_dev->driver;
 
-	if (!dev->driver)
-		return 0;
+	if (acpi_drv && acpi_drv->ops.resume)
+		return acpi_drv->ops.resume(acpi_dev);
+	return 0;
+}
+
+static int acpi_bus_match(struct device *dev, struct device_driver *drv)
+{
+	struct acpi_device *acpi_dev = to_acpi_device(dev);
+	struct acpi_driver *acpi_drv = to_acpi_driver(drv);
 
-	if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len,
-			   "PHYSDEVDRIVER=%s", dev->driver->name))
+	return !acpi_match_ids(acpi_dev, acpi_drv->ids);
+}
+
+static int acpi_device_uevent(struct device *dev, char **envp, int num_envp,
+	char *buffer, int buffer_size)
+{
+	struct acpi_device *acpi_dev = to_acpi_device(dev);
+	int i = 0, length = 0, ret = 0;
+
+	if (acpi_dev->flags.hardware_id)
+		ret = add_uevent_var(envp, num_envp, &i,
+			buffer, buffer_size, &length,
+			"HWID=%s", acpi_dev->pnp.hardware_id);
+	if (ret)
 		return -ENOMEM;
+	if (acpi_dev->flags.compatible_ids) {
+		int j;
+		struct acpi_compatible_id_list *cid_list;
+
+		cid_list = acpi_dev->pnp.cid_list;
+
+		for (j = 0; j < cid_list->count; j++) {
+			ret = add_uevent_var(envp, num_envp, &i, buffer,
+				buffer_size, &length, "COMPTID=%s",
+				cid_list->id[j].value);
+			if (ret)
+				return -ENOMEM;
+		}
+	}
 
 	envp[i] = NULL;
+	return 0;
+}
+
+static int acpi_bus_driver_init(struct acpi_device *, struct acpi_driver *);
+static int acpi_start_single_object(struct acpi_device *);
+static int acpi_device_probe(struct device * dev)
+{
+	struct acpi_device *acpi_dev = to_acpi_device(dev);
+	struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver);
+	int ret;
+
+	ret = acpi_bus_driver_init(acpi_dev, acpi_drv);
+	if (!ret) {
+		if (acpi_dev->bus_ops.acpi_op_start)
+			acpi_start_single_object(acpi_dev);
+		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+			"Found driver [%s] for device [%s]\n",
+			acpi_drv->name, acpi_dev->pnp.bus_id));
+		get_device(dev);
+	}
+	return ret;
+}
+
+static int acpi_device_remove(struct device * dev)
+{
+	struct acpi_device *acpi_dev = to_acpi_device(dev);
+	struct acpi_driver *acpi_drv = acpi_dev->driver;
+
+	if (acpi_drv) {
+		if (acpi_drv->ops.stop)
+			acpi_drv->ops.stop(acpi_dev, acpi_dev->removal_type);
+		if (acpi_drv->ops.remove)
+			acpi_drv->ops.remove(acpi_dev, acpi_dev->removal_type);
+	}
+	acpi_dev->driver = NULL;
+	acpi_driver_data(dev) = NULL;
 
+	put_device(dev);
 	return 0;
 }
 
-static struct kset_uevent_ops namespace_uevent_ops = {
-	.uevent = &namespace_uevent,
-};
+static void acpi_device_shutdown(struct device *dev)
+{
+	struct acpi_device *acpi_dev = to_acpi_device(dev);
+	struct acpi_driver *acpi_drv = acpi_dev->driver;
 
-static struct kset acpi_namespace_kset = {
-	.kobj = {
-		 .name = "namespace",
-		 },
-	.subsys = &acpi_subsys,
-	.ktype = &ktype_acpi_ns,
-	.uevent_ops = &namespace_uevent_ops,
+	if (acpi_drv && acpi_drv->ops.shutdown)
+		acpi_drv->ops.shutdown(acpi_dev);
+
+	return ;
+}
+
+static struct bus_type acpi_bus_type = {
+	.name		= "acpi",
+	.suspend	= acpi_device_suspend,
+	.resume		= acpi_device_resume,
+	.shutdown	= acpi_device_shutdown,
+	.match		= acpi_bus_match,
+	.probe		= acpi_device_probe,
+	.remove		= acpi_device_remove,
+	.uevent		= acpi_device_uevent,
 };
 
-static void acpi_device_register(struct acpi_device *device,
+static int acpi_device_register(struct acpi_device *device,
 				 struct acpi_device *parent)
 {
-	int err;
-
+	int result;
+	struct acpi_device_bus_id *acpi_device_bus_id, *new_bus_id;
+	int found = 0;
 	/*
 	 * Linkage
 	 * -------
@@ -126,7 +330,33 @@ static void acpi_device_register(struct acpi_device *device,
 	INIT_LIST_HEAD(&device->g_list);
 	INIT_LIST_HEAD(&device->wakeup_list);
 
+	new_bus_id = kzalloc(sizeof(struct acpi_device_bus_id), GFP_KERNEL);
+	if (!new_bus_id) {
+		printk(KERN_ERR PREFIX "Memory allocation error\n");
+		return -ENOMEM;
+	}
+
 	spin_lock(&acpi_device_lock);
+	/*
+	 * Find suitable bus_id and instance number in acpi_bus_id_list
+	 * If failed, create one and link it into acpi_bus_id_list
+	 */
+	list_for_each_entry(acpi_device_bus_id, &acpi_bus_id_list, node) {
+		if(!strcmp(acpi_device_bus_id->bus_id, device->flags.hardware_id? device->pnp.hardware_id : "device")) {
+			acpi_device_bus_id->instance_no ++;
+			found = 1;
+			kfree(new_bus_id);
+			break;
+		}
+	}
+	if(!found) {
+		acpi_device_bus_id = new_bus_id;
+		strcpy(acpi_device_bus_id->bus_id, device->flags.hardware_id ? device->pnp.hardware_id : "device");
+		acpi_device_bus_id->instance_no = 0;
+		list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list);
+	}
+	sprintf(device->dev.bus_id, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
+
 	if (device->parent) {
 		list_add_tail(&device->node, &device->parent->children);
 		list_add_tail(&device->g_list, &device->parent->g_list);
@@ -136,16 +366,33 @@ static void acpi_device_register(struct acpi_device *device,
 		list_add_tail(&device->wakeup_list, &acpi_wakeup_device_list);
 	spin_unlock(&acpi_device_lock);
 
-	strlcpy(device->kobj.name, device->pnp.bus_id, KOBJ_NAME_LEN);
-	if (parent)
-		device->kobj.parent = &parent->kobj;
-	device->kobj.ktype = &ktype_acpi_ns;
-	device->kobj.kset = &acpi_namespace_kset;
-	err = kobject_register(&device->kobj);
-	if (err < 0)
-		printk(KERN_WARNING "%s: kobject_register error: %d\n",
-			__FUNCTION__, err);
-	create_sysfs_device_files(device);
+	if (device->parent)
+		device->dev.parent = &parent->dev;
+	device->dev.bus = &acpi_bus_type;
+	device_initialize(&device->dev);
+	device->dev.release = &acpi_device_release;
+	result = device_add(&device->dev);
+	if(result) {
+		printk("Error adding device %s", device->dev.bus_id);
+		goto end;
+	}
+
+	result = acpi_device_setup_files(device);
+	if(result)
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error creating sysfs interface for device %s\n", device->dev.bus_id));
+
+	device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
+	return 0;
+  end:
+	spin_lock(&acpi_device_lock);
+	if (device->parent) {
+		list_del(&device->node);
+		list_del(&device->g_list);
+	} else
+		list_del(&device->g_list);
+	list_del(&device->wakeup_list);
+	spin_unlock(&acpi_device_lock);
+	return result;
 }
 
 static void acpi_device_unregister(struct acpi_device *device, int type)
@@ -158,81 +405,143 @@ static void acpi_device_unregister(struct acpi_device *device, int type)
 		list_del(&device->g_list);
 
 	list_del(&device->wakeup_list);
-
 	spin_unlock(&acpi_device_lock);
 
 	acpi_detach_data(device->handle, acpi_bus_data_handler);
-	remove_sysfs_device_files(device);
-	kobject_unregister(&device->kobj);
+
+	acpi_device_remove_files(device);
+	device_unregister(&device->dev);
 }
 
-void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context)
+/* --------------------------------------------------------------------------
+                                 Driver Management
+   -------------------------------------------------------------------------- */
+/**
+ * acpi_bus_driver_init - add a device to a driver
+ * @device: the device to add and initialize
+ * @driver: driver for the device
+ *
+ * Used to initialize a device via its device driver.  Called whenever a 
+ * driver is bound to a device.  Invokes the driver's add() ops.
+ */
+static int
+acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
 {
+	int result = 0;
 
-	/* TBD */
 
-	return;
-}
+	if (!device || !driver)
+		return -EINVAL;
 
-static int acpi_bus_get_power_flags(struct acpi_device *device)
-{
-	acpi_status status = 0;
-	acpi_handle handle = NULL;
-	u32 i = 0;
+	if (!driver->ops.add)
+		return -ENOSYS;
 
+	result = driver->ops.add(device);
+	if (result) {
+		device->driver = NULL;
+		acpi_driver_data(device) = NULL;
+		return result;
+	}
 
-	/*
-	 * Power Management Flags
-	 */
-	status = acpi_get_handle(device->handle, "_PSC", &handle);
-	if (ACPI_SUCCESS(status))
-		device->power.flags.explicit_get = 1;
-	status = acpi_get_handle(device->handle, "_IRC", &handle);
-	if (ACPI_SUCCESS(status))
-		device->power.flags.inrush_current = 1;
+	device->driver = driver;
 
 	/*
-	 * Enumerate supported power management states
+	 * TBD - Configuration Management: Assign resources to device based
+	 * upon possible configuration and currently allocated resources.
 	 */
-	for (i = ACPI_STATE_D0; i <= ACPI_STATE_D3; i++) {
-		struct acpi_device_power_state *ps = &device->power.states[i];
-		char object_name[5] = { '_', 'P', 'R', '0' + i, '\0' };
 
-		/* Evaluate "_PRx" to se if power resources are referenced */
-		acpi_evaluate_reference(device->handle, object_name, NULL,
-					&ps->resources);
-		if (ps->resources.count) {
-			device->power.flags.power_resources = 1;
-			ps->flags.valid = 1;
-		}
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+			  "Driver successfully bound to device\n"));
+	return 0;
+}
 
-		/* Evaluate "_PSx" to see if we can do explicit sets */
-		object_name[2] = 'S';
-		status = acpi_get_handle(device->handle, object_name, &handle);
-		if (ACPI_SUCCESS(status)) {
-			ps->flags.explicit_set = 1;
-			ps->flags.valid = 1;
-		}
+static int acpi_start_single_object(struct acpi_device *device)
+{
+	int result = 0;
+	struct acpi_driver *driver;
 
-		/* State is valid if we have some power control */
-		if (ps->resources.count || ps->flags.explicit_set)
-			ps->flags.valid = 1;
 
-		ps->power = -1;	/* Unknown - driver assigned */
-		ps->latency = -1;	/* Unknown - driver assigned */
+	if (!(driver = device->driver))
+		return 0;
+
+	if (driver->ops.start) {
+		result = driver->ops.start(device);
+		if (result && driver->ops.remove)
+			driver->ops.remove(device, ACPI_BUS_REMOVAL_NORMAL);
 	}
 
-	/* Set defaults for D0 and D3 states (always valid) */
-	device->power.states[ACPI_STATE_D0].flags.valid = 1;
-	device->power.states[ACPI_STATE_D0].power = 100;
-	device->power.states[ACPI_STATE_D3].flags.valid = 1;
-	device->power.states[ACPI_STATE_D3].power = 0;
+	return result;
+}
 
-	/* TBD: System wake support and resource requirements. */
+/**
+ * acpi_bus_register_driver - register a driver with the ACPI bus
+ * @driver: driver being registered
+ *
+ * Registers a driver with the ACPI bus.  Searches the namespace for all
+ * devices that match the driver's criteria and binds.  Returns zero for
+ * success or a negative error status for failure.
+ */
+int acpi_bus_register_driver(struct acpi_driver *driver)
+{
+	int ret;
 
-	device->power.state = ACPI_STATE_UNKNOWN;
+	if (acpi_disabled)
+		return -ENODEV;
+	driver->drv.name = driver->name;
+	driver->drv.bus = &acpi_bus_type;
+	driver->drv.owner = driver->owner;
 
-	return 0;
+	ret = driver_register(&driver->drv);
+	return ret;
+}
+
+EXPORT_SYMBOL(acpi_bus_register_driver);
+
+/**
+ * acpi_bus_unregister_driver - unregisters a driver with the APIC bus
+ * @driver: driver to unregister
+ *
+ * Unregisters a driver with the ACPI bus.  Searches the namespace for all
+ * devices that match the driver's criteria and unbinds.
+ */
+void acpi_bus_unregister_driver(struct acpi_driver *driver)
+{
+	driver_unregister(&driver->drv);
+}
+
+EXPORT_SYMBOL(acpi_bus_unregister_driver);
+
+/* --------------------------------------------------------------------------
+                                 Device Enumeration
+   -------------------------------------------------------------------------- */
+acpi_status
+acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd)
+{
+	acpi_status status;
+	acpi_handle tmp;
+	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+	union acpi_object *obj;
+
+	status = acpi_get_handle(handle, "_EJD", &tmp);
+	if (ACPI_FAILURE(status))
+		return status;
+
+	status = acpi_evaluate_object(handle, "_EJD", NULL, &buffer);
+	if (ACPI_SUCCESS(status)) {
+		obj = buffer.pointer;
+		status = acpi_get_handle(NULL, obj->string.pointer, ejd);
+		kfree(buffer.pointer);
+	}
+	return status;
+}
+EXPORT_SYMBOL_GPL(acpi_bus_get_ejd);
+
+void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context)
+{
+
+	/* TBD */
+
+	return;
 }
 
 int acpi_match_ids(struct acpi_device *device, char *ids)
@@ -254,6 +563,12 @@ int acpi_match_ids(struct acpi_device *device, char *ids)
 	return -ENOENT;
 }
 
+static int acpi_bus_get_perf_flags(struct acpi_device *device)
+{
+	device->performance.state = ACPI_STATE_UNKNOWN;
+	return 0;
+}
+
 static acpi_status
 acpi_bus_extract_wakeup_device_power_package(struct acpi_device *device,
 					     union acpi_object *package)
@@ -338,359 +653,66 @@ static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
 	return 0;
 }
 
-/* --------------------------------------------------------------------------
-		ACPI sysfs device file support
-   -------------------------------------------------------------------------- */
-static ssize_t acpi_eject_store(struct acpi_device *device,
-				const char *buf, size_t count);
-
-#define ACPI_DEVICE_ATTR(_name,_mode,_show,_store) \
-static struct acpi_device_attribute acpi_device_attr_##_name = \
-		__ATTR(_name, _mode, _show, _store)
-
-ACPI_DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store);
-
-/**
- * setup_sys_fs_device_files - sets up the device files under device namespace
- * @dev:	acpi_device object
- * @func:	function pointer to create or destroy the device file
- */
-static void
-setup_sys_fs_device_files(struct acpi_device *dev,
-			  acpi_device_sysfs_files * func)
-{
-	acpi_status status;
-	acpi_handle temp = NULL;
-
-	/*
-	 * If device has _EJ0, 'eject' file is created that is used to trigger
-	 * hot-removal function from userland.
-	 */
-	status = acpi_get_handle(dev->handle, "_EJ0", &temp);
-	if (ACPI_SUCCESS(status))
-		(*(func)) (&dev->kobj, &acpi_device_attr_eject.attr);
-}
-
-static int acpi_eject_operation(acpi_handle handle, int lockable)
+static int acpi_bus_get_power_flags(struct acpi_device *device)
 {
-	struct acpi_object_list arg_list;
-	union acpi_object arg;
-	acpi_status status = AE_OK;
-
-	/*
-	 * TBD: evaluate _PS3?
-	 */
-
-	if (lockable) {
-		arg_list.count = 1;
-		arg_list.pointer = &arg;
-		arg.type = ACPI_TYPE_INTEGER;
-		arg.integer.value = 0;
-		acpi_evaluate_object(handle, "_LCK", &arg_list, NULL);
-	}
+	acpi_status status = 0;
+	acpi_handle handle = NULL;
+	u32 i = 0;
 
-	arg_list.count = 1;
-	arg_list.pointer = &arg;
-	arg.type = ACPI_TYPE_INTEGER;
-	arg.integer.value = 1;
 
 	/*
-	 * TBD: _EJD support.
+	 * Power Management Flags
 	 */
-
-	status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL);
-	if (ACPI_FAILURE(status)) {
-		return (-ENODEV);
-	}
-
-	return (0);
-}
-
-static ssize_t
-acpi_eject_store(struct acpi_device *device, const char *buf, size_t count)
-{
-	int result;
-	int ret = count;
-	int islockable;
-	acpi_status status;
-	acpi_handle handle;
-	acpi_object_type type = 0;
-
-	if ((!count) || (buf[0] != '1')) {
-		return -EINVAL;
-	}
-#ifndef FORCE_EJECT
-	if (device->driver == NULL) {
-		ret = -ENODEV;
-		goto err;
-	}
-#endif
-	status = acpi_get_type(device->handle, &type);
-	if (ACPI_FAILURE(status) || (!device->flags.ejectable)) {
-		ret = -ENODEV;
-		goto err;
-	}
-
-	islockable = device->flags.lockable;
-	handle = device->handle;
-
-	result = acpi_bus_trim(device, 1);
-
-	if (!result)
-		result = acpi_eject_operation(handle, islockable);
-
-	if (result) {
-		ret = -EBUSY;
-	}
-      err:
-	return ret;
-}
-
-/* --------------------------------------------------------------------------
-                              Performance Management
-   -------------------------------------------------------------------------- */
-
-static int acpi_bus_get_perf_flags(struct acpi_device *device)
-{
-	device->performance.state = ACPI_STATE_UNKNOWN;
-	return 0;
-}
-
-/* --------------------------------------------------------------------------
-                                 Driver Management
-   -------------------------------------------------------------------------- */
-
-static LIST_HEAD(acpi_bus_drivers);
-
-/**
- * acpi_bus_match - match device IDs to driver's supported IDs
- * @device: the device that we are trying to match to a driver
- * @driver: driver whose device id table is being checked
- *
- * Checks the device's hardware (_HID) or compatible (_CID) ids to see if it
- * matches the specified driver's criteria.
- */
-static int
-acpi_bus_match(struct acpi_device *device, struct acpi_driver *driver)
-{
-	if (driver && driver->ops.match)
-		return driver->ops.match(device, driver);
-	return acpi_match_ids(device, driver->ids);
-}
-
-/**
- * acpi_bus_driver_init - add a device to a driver
- * @device: the device to add and initialize
- * @driver: driver for the device
- *
- * Used to initialize a device via its device driver.  Called whenever a 
- * driver is bound to a device.  Invokes the driver's add() and start() ops.
- */
-static int
-acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
-{
-	int result = 0;
-
-
-	if (!device || !driver)
-		return -EINVAL;
-
-	if (!driver->ops.add)
-		return -ENOSYS;
-
-	result = driver->ops.add(device);
-	if (result) {
-		device->driver = NULL;
-		acpi_driver_data(device) = NULL;
-		return result;
-	}
-
-	device->driver = driver;
+	status = acpi_get_handle(device->handle, "_PSC", &handle);
+	if (ACPI_SUCCESS(status))
+		device->power.flags.explicit_get = 1;
+	status = acpi_get_handle(device->handle, "_IRC", &handle);
+	if (ACPI_SUCCESS(status))
+		device->power.flags.inrush_current = 1;
 
 	/*
-	 * TBD - Configuration Management: Assign resources to device based
-	 * upon possible configuration and currently allocated resources.
+	 * Enumerate supported power management states
 	 */
+	for (i = ACPI_STATE_D0; i <= ACPI_STATE_D3; i++) {
+		struct acpi_device_power_state *ps = &device->power.states[i];
+		char object_name[5] = { '_', 'P', 'R', '0' + i, '\0' };
 
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-			  "Driver successfully bound to device\n"));
-	return 0;
-}
-
-static int acpi_start_single_object(struct acpi_device *device)
-{
-	int result = 0;
-	struct acpi_driver *driver;
-
-
-	if (!(driver = device->driver))
-		return 0;
-
-	if (driver->ops.start) {
-		result = driver->ops.start(device);
-		if (result && driver->ops.remove)
-			driver->ops.remove(device, ACPI_BUS_REMOVAL_NORMAL);
-	}
-
-	return result;
-}
-
-static void acpi_driver_attach(struct acpi_driver *drv)
-{
-	struct list_head *node, *next;
-
-
-	spin_lock(&acpi_device_lock);
-	list_for_each_safe(node, next, &acpi_device_list) {
-		struct acpi_device *dev =
-		    container_of(node, struct acpi_device, g_list);
-
-		if (dev->driver || !dev->status.present)
-			continue;
-		spin_unlock(&acpi_device_lock);
-
-		if (!acpi_bus_match(dev, drv)) {
-			if (!acpi_bus_driver_init(dev, drv)) {
-				acpi_start_single_object(dev);
-				atomic_inc(&drv->references);
-				ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-						  "Found driver [%s] for device [%s]\n",
-						  drv->name, dev->pnp.bus_id));
-			}
+		/* Evaluate "_PRx" to se if power resources are referenced */
+		acpi_evaluate_reference(device->handle, object_name, NULL,
+					&ps->resources);
+		if (ps->resources.count) {
+			device->power.flags.power_resources = 1;
+			ps->flags.valid = 1;
 		}
-		spin_lock(&acpi_device_lock);
-	}
-	spin_unlock(&acpi_device_lock);
-}
-
-static void acpi_driver_detach(struct acpi_driver *drv)
-{
-	struct list_head *node, *next;
-
 
-	spin_lock(&acpi_device_lock);
-	list_for_each_safe(node, next, &acpi_device_list) {
-		struct acpi_device *dev =
-		    container_of(node, struct acpi_device, g_list);
-
-		if (dev->driver == drv) {
-			spin_unlock(&acpi_device_lock);
-			if (drv->ops.remove)
-				drv->ops.remove(dev, ACPI_BUS_REMOVAL_NORMAL);
-			spin_lock(&acpi_device_lock);
-			dev->driver = NULL;
-			dev->driver_data = NULL;
-			atomic_dec(&drv->references);
+		/* Evaluate "_PSx" to see if we can do explicit sets */
+		object_name[2] = 'S';
+		status = acpi_get_handle(device->handle, object_name, &handle);
+		if (ACPI_SUCCESS(status)) {
+			ps->flags.explicit_set = 1;
+			ps->flags.valid = 1;
 		}
-	}
-	spin_unlock(&acpi_device_lock);
-}
-
-/**
- * acpi_bus_register_driver - register a driver with the ACPI bus
- * @driver: driver being registered
- *
- * Registers a driver with the ACPI bus.  Searches the namespace for all
- * devices that match the driver's criteria and binds.  Returns zero for
- * success or a negative error status for failure.
- */
-int acpi_bus_register_driver(struct acpi_driver *driver)
-{
-
-	if (acpi_disabled)
-		return -ENODEV;
-
-	spin_lock(&acpi_device_lock);
-	list_add_tail(&driver->node, &acpi_bus_drivers);
-	spin_unlock(&acpi_device_lock);
-	acpi_driver_attach(driver);
-
-	return 0;
-}
-
-EXPORT_SYMBOL(acpi_bus_register_driver);
-
-/**
- * acpi_bus_unregister_driver - unregisters a driver with the APIC bus
- * @driver: driver to unregister
- *
- * Unregisters a driver with the ACPI bus.  Searches the namespace for all
- * devices that match the driver's criteria and unbinds.
- */
-void acpi_bus_unregister_driver(struct acpi_driver *driver)
-{
-	acpi_driver_detach(driver);
-
-	if (!atomic_read(&driver->references)) {
-		spin_lock(&acpi_device_lock);
-		list_del_init(&driver->node);
-		spin_unlock(&acpi_device_lock);
-	}
-	return;
-}
-
-EXPORT_SYMBOL(acpi_bus_unregister_driver);
-
-/**
- * acpi_bus_find_driver - check if there is a driver installed for the device
- * @device: device that we are trying to find a supporting driver for
- *
- * Parses the list of registered drivers looking for a driver applicable for
- * the specified device.
- */
-static int acpi_bus_find_driver(struct acpi_device *device)
-{
-	int result = 0;
-	struct list_head *node, *next;
 
+		/* State is valid if we have some power control */
+		if (ps->resources.count || ps->flags.explicit_set)
+			ps->flags.valid = 1;
 
-	spin_lock(&acpi_device_lock);
-	list_for_each_safe(node, next, &acpi_bus_drivers) {
-		struct acpi_driver *driver =
-		    container_of(node, struct acpi_driver, node);
-
-		atomic_inc(&driver->references);
-		spin_unlock(&acpi_device_lock);
-		if (!acpi_bus_match(device, driver)) {
-			result = acpi_bus_driver_init(device, driver);
-			if (!result)
-				goto Done;
-		}
-		atomic_dec(&driver->references);
-		spin_lock(&acpi_device_lock);
+		ps->power = -1;	/* Unknown - driver assigned */
+		ps->latency = -1;	/* Unknown - driver assigned */
 	}
-	spin_unlock(&acpi_device_lock);
 
-      Done:
-	return result;
-}
-
-/* --------------------------------------------------------------------------
-                                 Device Enumeration
-   -------------------------------------------------------------------------- */
+	/* Set defaults for D0 and D3 states (always valid) */
+	device->power.states[ACPI_STATE_D0].flags.valid = 1;
+	device->power.states[ACPI_STATE_D0].power = 100;
+	device->power.states[ACPI_STATE_D3].flags.valid = 1;
+	device->power.states[ACPI_STATE_D3].power = 0;
 
-acpi_status
-acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd)
-{
-	acpi_status status;
-	acpi_handle tmp;
-	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
-	union acpi_object *obj;
+	/* TBD: System wake support and resource requirements. */
 
-	status = acpi_get_handle(handle, "_EJD", &tmp);
-	if (ACPI_FAILURE(status))
-		return status;
+	device->power.state = ACPI_STATE_UNKNOWN;
 
-	status = acpi_evaluate_object(handle, "_EJD", NULL, &buffer);
-	if (ACPI_SUCCESS(status)) {
-		obj = buffer.pointer;
-		status = acpi_get_handle(NULL, obj->string.pointer, ejd);
-		kfree(buffer.pointer);
-	}
-	return status;
+	return 0;
 }
-EXPORT_SYMBOL_GPL(acpi_bus_get_ejd);
-
 
 static int acpi_bus_get_flags(struct acpi_device *device)
 {
@@ -782,6 +804,39 @@ static void acpi_device_get_busid(struct acpi_device *device,
 	}
 }
 
+static int
+acpi_video_bus_match(struct acpi_device *device)
+{
+	acpi_handle h_dummy1;
+	acpi_handle h_dummy2;
+	acpi_handle h_dummy3;
+
+
+	if (!device)
+		return -EINVAL;
+
+	/* Since there is no HID, CID for ACPI Video drivers, we have
+	 * to check well known required nodes for each feature we support.
+	 */
+
+	/* Does this device able to support video switching ? */
+	if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) &&
+	    ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2)))
+		return 0;
+
+	/* Does this device able to retrieve a video ROM ? */
+	if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1)))
+		return 0;
+
+	/* Does this device able to configure which video head to be POSTed ? */
+	if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) &&
+	    ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) &&
+	    ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3)))
+		return 0;
+
+	return -ENODEV;
+}
+
 static void acpi_device_set_id(struct acpi_device *device,
 			       struct acpi_device *parent, acpi_handle handle,
 			       int type)
@@ -812,6 +867,12 @@ static void acpi_device_set_id(struct acpi_device *device,
 			device->pnp.bus_address = info->address;
 			device->flags.bus_address = 1;
 		}
+
+		if(!(info->valid & (ACPI_VALID_HID | ACPI_VALID_CID))){
+			status = acpi_video_bus_match(device);
+			if(ACPI_SUCCESS(status))
+				hid = ACPI_VIDEO_HID;
+		}
 		break;
 	case ACPI_BUS_TYPE_POWER:
 		hid = ACPI_POWER_HID;
@@ -933,41 +994,22 @@ static void acpi_device_get_debug_info(struct acpi_device *device,
 
 static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
 {
-	int result = 0;
-	struct acpi_driver *driver;
-
-
 	if (!dev)
 		return -EINVAL;
 
-	driver = dev->driver;
-
-	if ((driver) && (driver->ops.remove)) {
-
-		if (driver->ops.stop) {
-			result = driver->ops.stop(dev, ACPI_BUS_REMOVAL_EJECT);
-			if (result)
-				return result;
-		}
-
-		result = dev->driver->ops.remove(dev, ACPI_BUS_REMOVAL_EJECT);
-		if (result) {
-			return result;
-		}
-
-		atomic_dec(&dev->driver->references);
-		dev->driver = NULL;
-		acpi_driver_data(dev) = NULL;
-	}
+	dev->removal_type = ACPI_BUS_REMOVAL_EJECT;
+	device_release_driver(&dev->dev);
 
 	if (!rmdevice)
 		return 0;
 
+	/*
+	 * unbind _ADR-Based Devices when hot removal
+	 */
 	if (dev->flags.bus_address) {
 		if ((dev->parent) && (dev->parent->ops.unbind))
 			dev->parent->ops.unbind(dev);
 	}
-
 	acpi_device_unregister(dev, ACPI_BUS_REMOVAL_EJECT);
 
 	return 0;
@@ -975,7 +1017,8 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
 
 static int
 acpi_add_single_object(struct acpi_device **child,
-		       struct acpi_device *parent, acpi_handle handle, int type)
+		       struct acpi_device *parent, acpi_handle handle, int type,
+			struct acpi_bus_ops *ops)
 {
 	int result = 0;
 	struct acpi_device *device = NULL;
@@ -992,6 +1035,8 @@ acpi_add_single_object(struct acpi_device **child,
 
 	device->handle = handle;
 	device->parent = parent;
+	device->bus_ops = *ops; /* workround for not call .start */
+
 
 	acpi_device_get_busid(device, handle, type);
 
@@ -1078,31 +1123,16 @@ acpi_add_single_object(struct acpi_device **child,
 
 	acpi_device_get_debug_info(device, handle, type);
 
-	acpi_device_register(device, parent);
+	result = acpi_device_register(device, parent);
 
 	/*
-	 * Bind _ADR-Based Devices
-	 * -----------------------
-	 * If there's a a bus address (_ADR) then we utilize the parent's 
-	 * 'bind' function (if exists) to bind the ACPI- and natively-
-	 * enumerated device representations.
+	 * Bind _ADR-Based Devices when hot add
 	 */
 	if (device->flags.bus_address) {
 		if (device->parent && device->parent->ops.bind)
 			device->parent->ops.bind(device);
 	}
 
-	/*
-	 * Locate & Attach Driver
-	 * ----------------------
-	 * If there's a hardware id (_HID) or compatible ids (_CID) we check
-	 * to see if there's a driver installed for this kind of device.  Note
-	 * that drivers can install before or after a device is enumerated.
-	 *
-	 * TBD: Assumes LDM provides driver hot-plug capability.
-	 */
-	acpi_bus_find_driver(device);
-
       end:
 	if (!result)
 		*child = device;
@@ -1188,14 +1218,14 @@ static int acpi_bus_scan(struct acpi_device *start, struct acpi_bus_ops *ops)
 
 		if (ops->acpi_op_add)
 			status = acpi_add_single_object(&child, parent,
-							chandle, type);
+				chandle, type, ops);
 		else
 			status = acpi_bus_get_device(chandle, &child);
 
 		if (ACPI_FAILURE(status))
 			continue;
 
-		if (ops->acpi_op_start) {
+		if (ops->acpi_op_start && !(ops->acpi_op_add)) {
 			status = acpi_start_single_object(child);
 			if (ACPI_FAILURE(status))
 				continue;
@@ -1233,13 +1263,13 @@ acpi_bus_add(struct acpi_device **child,
 	int result;
 	struct acpi_bus_ops ops;
 
+	memset(&ops, 0, sizeof(ops));
+	ops.acpi_op_add = 1;
 
-	result = acpi_add_single_object(child, parent, handle, type);
-	if (!result) {
-		memset(&ops, 0, sizeof(ops));
-		ops.acpi_op_add = 1;
+	result = acpi_add_single_object(child, parent, handle, type, &ops);
+	if (!result)
 		result = acpi_bus_scan(*child, &ops);
-	}
+
 	return result;
 }
 
@@ -1325,127 +1355,35 @@ static int acpi_bus_scan_fixed(struct acpi_device *root)
 {
 	int result = 0;
 	struct acpi_device *device = NULL;
-
+	struct acpi_bus_ops ops;
 
 	if (!root)
 		return -ENODEV;
 
+	memset(&ops, 0, sizeof(ops));
+	ops.acpi_op_add = 1;
+	ops.acpi_op_start = 1;
+
 	/*
 	 * Enumerate all fixed-feature devices.
 	 */
 	if ((acpi_gbl_FADT.flags & ACPI_FADT_POWER_BUTTON) == 0) {
 		result = acpi_add_single_object(&device, acpi_root,
 						NULL,
-						ACPI_BUS_TYPE_POWER_BUTTON);
-		if (!result)
-			result = acpi_start_single_object(device);
+						ACPI_BUS_TYPE_POWER_BUTTON,
+						&ops);
 	}
 
 	if ((acpi_gbl_FADT.flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
 		result = acpi_add_single_object(&device, acpi_root,
 						NULL,
-						ACPI_BUS_TYPE_SLEEP_BUTTON);
-		if (!result)
-			result = acpi_start_single_object(device);
+						ACPI_BUS_TYPE_SLEEP_BUTTON,
+						&ops);
 	}
 
 	return result;
 }
 
-
-static inline struct acpi_device * to_acpi_dev(struct device * dev)
-{
-	return container_of(dev, struct acpi_device, dev);
-}
-
-
-static int root_suspend(struct acpi_device * acpi_dev, pm_message_t state)
-{
-	struct acpi_device * dev, * next;
-	int result;
-
-	spin_lock(&acpi_device_lock);
-	list_for_each_entry_safe_reverse(dev, next, &acpi_device_list, g_list) {
-		if (dev->driver && dev->driver->ops.suspend) {
-			spin_unlock(&acpi_device_lock);
-			result = dev->driver->ops.suspend(dev, 0);
-			if (result) {
-				printk(KERN_ERR PREFIX "[%s - %s] Suspend failed: %d\n",
-				       acpi_device_name(dev),
-				       acpi_device_bid(dev), result);
-			}
-			spin_lock(&acpi_device_lock);
-		}
-	}
-	spin_unlock(&acpi_device_lock);
-	return 0;
-}
-
-
-static int acpi_device_suspend(struct device * dev, pm_message_t state)
-{
-	struct acpi_device * acpi_dev = to_acpi_dev(dev);
-
-	/*
-	 * For now, we should only register 1 generic device -
-	 * the ACPI root device - and from there, we walk the
-	 * tree of ACPI devices to suspend each one using the
-	 * ACPI driver methods.
-	 */
-	if (acpi_dev->handle == ACPI_ROOT_OBJECT)
-		root_suspend(acpi_dev, state);
-	return 0;
-}
-
-
-
-static int root_resume(struct acpi_device * acpi_dev)
-{
-	struct acpi_device * dev, * next;
-	int result;
-
-	spin_lock(&acpi_device_lock);
-	list_for_each_entry_safe(dev, next, &acpi_device_list, g_list) {
-		if (dev->driver && dev->driver->ops.resume) {
-			spin_unlock(&acpi_device_lock);
-			result = dev->driver->ops.resume(dev, 0);
-			if (result) {
-				printk(KERN_ERR PREFIX "[%s - %s] resume failed: %d\n",
-				       acpi_device_name(dev),
-				       acpi_device_bid(dev), result);
-			}
-			spin_lock(&acpi_device_lock);
-		}
-	}
-	spin_unlock(&acpi_device_lock);
-	return 0;
-}
-
-
-static int acpi_device_resume(struct device * dev)
-{
-	struct acpi_device * acpi_dev = to_acpi_dev(dev);
-
-	/*
-	 * For now, we should only register 1 generic device -
-	 * the ACPI root device - and from there, we walk the
-	 * tree of ACPI devices to resume each one using the
-	 * ACPI driver methods.
-	 */
-	if (acpi_dev->handle == ACPI_ROOT_OBJECT)
-		root_resume(acpi_dev);
-	return 0;
-}
-
-
-static struct bus_type acpi_bus_type = {
-	.name		= "acpi",
-	.suspend	= acpi_device_suspend,
-	.resume		= acpi_device_resume,
-};
-
-
-
 static int __init acpi_scan_init(void)
 {
 	int result;
@@ -1455,9 +1393,9 @@ static int __init acpi_scan_init(void)
 	if (acpi_disabled)
 		return 0;
 
-	result = kset_register(&acpi_namespace_kset);
-	if (result < 0)
-		printk(KERN_ERR PREFIX "kset_register error: %d\n", result);
+	memset(&ops, 0, sizeof(ops));
+	ops.acpi_op_add = 1;
+	ops.acpi_op_start = 1;
 
 	result = bus_register(&acpi_bus_type);
 	if (result) {
@@ -1469,32 +1407,16 @@ static int __init acpi_scan_init(void)
 	 * Create the root device in the bus's device tree
 	 */
 	result = acpi_add_single_object(&acpi_root, NULL, ACPI_ROOT_OBJECT,
-					ACPI_BUS_TYPE_SYSTEM);
-	if (result)
-		goto Done;
-
-	result = acpi_start_single_object(acpi_root);
+					ACPI_BUS_TYPE_SYSTEM, &ops);
 	if (result)
 		goto Done;
 
-	acpi_root->dev.bus = &acpi_bus_type;
-	snprintf(acpi_root->dev.bus_id, BUS_ID_SIZE, "%s", acpi_bus_type.name);
-	result = device_register(&acpi_root->dev);
-	if (result) {
-		/* We don't want to quit even if we failed to add suspend/resume */
-		printk(KERN_ERR PREFIX "Could not register device\n");
-	}
-
 	/*
 	 * Enumerate devices in the ACPI namespace.
 	 */
 	result = acpi_bus_scan_fixed(acpi_root);
-	if (!result) {
-		memset(&ops, 0, sizeof(ops));
-		ops.acpi_op_add = 1;
-		ops.acpi_op_start = 1;
+	if (!result)
 		result = acpi_bus_scan(acpi_root, &ops);
-	}
 
 	if (result)
 		acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL);
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 2d425d84582..7147b0bdab0 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -32,6 +32,11 @@
 
 #define _COMPONENT		ACPI_SYSTEM_COMPONENT
 ACPI_MODULE_NAME("acpi_system")
+#ifdef MODULE_PARAM_PREFIX
+#undef MODULE_PARAM_PREFIX
+#endif
+#define MODULE_PARAM_PREFIX "acpi."
+
 #define ACPI_SYSTEM_CLASS		"system"
 #define ACPI_SYSTEM_DRIVER_NAME		"ACPI System Driver"
 #define ACPI_SYSTEM_DEVICE_NAME		"System"
@@ -40,9 +45,23 @@ ACPI_MODULE_NAME("acpi_system")
 #define ACPI_SYSTEM_FILE_DSDT		"dsdt"
 #define ACPI_SYSTEM_FILE_FADT		"fadt"
 
+/*
+ * Make ACPICA version work as module param
+ */
+static int param_get_acpica_version(char *buffer, struct kernel_param *kp) {
+	int result;
+
+	result = sprintf(buffer, "%x", ACPI_CA_VERSION);
+
+	return result;
+}
+
+module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
+
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
+#ifdef CONFIG_ACPI_PROCFS
 
 static int acpi_system_read_info(struct seq_file *seq, void *offset)
 {
@@ -62,6 +81,7 @@ static const struct file_operations acpi_system_info_ops = {
 	.llseek = seq_lseek,
 	.release = single_release,
 };
+#endif
 
 static ssize_t acpi_system_read_dsdt(struct file *, char __user *, size_t,
 				     loff_t *);
@@ -125,6 +145,7 @@ static int __init acpi_system_init(void)
 	if (acpi_disabled)
 		return 0;
 
+#ifdef CONFIG_ACPI_PROCFS
 	/* 'info' [R] */
 	name = ACPI_SYSTEM_FILE_INFO;
 	entry = create_proc_entry(name, S_IRUGO, acpi_root_dir);
@@ -133,6 +154,7 @@ static int __init acpi_system_init(void)
 	else {
 		entry->proc_fops = &acpi_system_info_ops;
 	}
+#endif
 
 	/* 'dsdt' [R] */
 	name = ACPI_SYSTEM_FILE_DSDT;
@@ -156,7 +178,9 @@ static int __init acpi_system_init(void)
       Error:
 	remove_proc_entry(ACPI_SYSTEM_FILE_FADT, acpi_root_dir);
 	remove_proc_entry(ACPI_SYSTEM_FILE_DSDT, acpi_root_dir);
+#ifdef CONFIG_ACPI_PROCFS
 	remove_proc_entry(ACPI_SYSTEM_FILE_INFO, acpi_root_dir);
+#endif
 
 	error = -EFAULT;
 	goto Done;
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 40ddb4dd963..f76d3168c2b 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -82,7 +82,7 @@ MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds.\n");
 
 static int acpi_thermal_add(struct acpi_device *device);
 static int acpi_thermal_remove(struct acpi_device *device, int type);
-static int acpi_thermal_resume(struct acpi_device *device, int state);
+static int acpi_thermal_resume(struct acpi_device *device);
 static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file);
 static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file);
 static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file);
@@ -1353,7 +1353,7 @@ static int acpi_thermal_remove(struct acpi_device *device, int type)
 	return 0;
 }
 
-static int acpi_thermal_resume(struct acpi_device *device, int state)
+static int acpi_thermal_resume(struct acpi_device *device)
 {
 	struct acpi_thermal *tz = NULL;
 	int i;
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index a695aeb8b2a..e0b97add8c6 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -73,16 +73,14 @@ MODULE_LICENSE("GPL");
 
 static int acpi_video_bus_add(struct acpi_device *device);
 static int acpi_video_bus_remove(struct acpi_device *device, int type);
-static int acpi_video_bus_match(struct acpi_device *device,
-				struct acpi_driver *driver);
 
 static struct acpi_driver acpi_video_bus = {
 	.name = ACPI_VIDEO_DRIVER_NAME,
 	.class = ACPI_VIDEO_CLASS,
+	.ids = ACPI_VIDEO_HID,
 	.ops = {
 		.add = acpi_video_bus_add,
 		.remove = acpi_video_bus_remove,
-		.match = acpi_video_bus_match,
 		},
 };
 
@@ -1885,39 +1883,6 @@ static int acpi_video_bus_remove(struct acpi_device *device, int type)
 	return 0;
 }
 
-static int
-acpi_video_bus_match(struct acpi_device *device, struct acpi_driver *driver)
-{
-	acpi_handle h_dummy1;
-	acpi_handle h_dummy2;
-	acpi_handle h_dummy3;
-
-
-	if (!device || !driver)
-		return -EINVAL;
-
-	/* Since there is no HID, CID for ACPI Video drivers, we have
-	 * to check well known required nodes for each feature we support.
-	 */
-
-	/* Does this device able to support video switching ? */
-	if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) &&
-	    ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2)))
-		return 0;
-
-	/* Does this device able to retrieve a video ROM ? */
-	if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1)))
-		return 0;
-
-	/* Does this device able to configure which video head to be POSTed ? */
-	if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) &&
-	    ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) &&
-	    ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3)))
-		return 0;
-
-	return -ENODEV;
-}
-
 static int __init acpi_video_init(void)
 {
 	int result = 0;