Merge branch 'master' of /home/shaggy/git/linus-clean/

1 files changed, 0 insertions, 747 deletions

diff --git a/drivers/acpi/wmi.c b/drivers/acpi/wmi.c
deleted file mode 100644
index 8a8b377712c9..000000000000
--- a/drivers/acpi/wmi.c
+++ /dev/null
@@ -1,747 +0,0 @@
-/*
- *  ACPI-WMI mapping driver
- *
- *  Copyright (C) 2007-2008 Carlos Corbacho <carlos@strangeworlds.co.uk>
- *
- *  GUID parsing code from ldm.c is:
- *   Copyright (C) 2001,2002 Richard Russon <ldm@flatcap.org>
- *   Copyright (c) 2001-2007 Anton Altaparmakov
- *   Copyright (C) 2001,2002 Jakob Kemi <jakob.kemi@telia.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.,
- *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/list.h>
-#include <linux/acpi.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
-
-ACPI_MODULE_NAME("wmi");
-MODULE_AUTHOR("Carlos Corbacho");
-MODULE_DESCRIPTION("ACPI-WMI Mapping Driver");
-MODULE_LICENSE("GPL");
-
-#define ACPI_WMI_CLASS "wmi"
-
-#undef PREFIX
-#define PREFIX "ACPI: WMI: "
-
-static DEFINE_MUTEX(wmi_data_lock);
-
-struct guid_block {
-	char guid[16];
-	union {
-		char object_id[2];
-		struct {
-			unsigned char notify_id;
-			unsigned char reserved;
-		};
-	};
-	u8 instance_count;
-	u8 flags;
-};
-
-struct wmi_block {
-	struct list_head list;
-	struct guid_block gblock;
-	acpi_handle handle;
-	wmi_notify_handler handler;
-	void *handler_data;
-};
-
-static struct wmi_block wmi_blocks;
-
-/*
- * If the GUID data block is marked as expensive, we must enable and
- * explicitily disable data collection.
- */
-#define ACPI_WMI_EXPENSIVE   0x1
-#define ACPI_WMI_METHOD      0x2	/* GUID is a method */
-#define ACPI_WMI_STRING      0x4	/* GUID takes & returns a string */
-#define ACPI_WMI_EVENT       0x8	/* GUID is an event */
-
-static int acpi_wmi_remove(struct acpi_device *device, int type);
-static int acpi_wmi_add(struct acpi_device *device);
-
-static const struct acpi_device_id wmi_device_ids[] = {
-	{"PNP0C14", 0},
-	{"pnp0c14", 0},
-	{"", 0},
-};
-MODULE_DEVICE_TABLE(acpi, wmi_device_ids);
-
-static struct acpi_driver acpi_wmi_driver = {
-	.name = "wmi",
-	.class = ACPI_WMI_CLASS,
-	.ids = wmi_device_ids,
-	.ops = {
-		.add = acpi_wmi_add,
-		.remove = acpi_wmi_remove,
-		},
-};
-
-/*
- * GUID parsing functions
- */
-
-/**
- * wmi_parse_hexbyte - Convert a ASCII hex number to a byte
- * @src:  Pointer to at least 2 characters to convert.
- *
- * Convert a two character ASCII hex string to a number.
- *
- * Return:  0-255  Success, the byte was parsed correctly
- *          -1     Error, an invalid character was supplied
- */
-static int wmi_parse_hexbyte(const u8 *src)
-{
-	unsigned int x; /* For correct wrapping */
-	int h;
-
-	/* high part */
-	x = src[0];
-	if (x - '0' <= '9' - '0') {
-		h = x - '0';
-	} else if (x - 'a' <= 'f' - 'a') {
-		h = x - 'a' + 10;
-	} else if (x - 'A' <= 'F' - 'A') {
-		h = x - 'A' + 10;
-	} else {
-		return -1;
-	}
-	h <<= 4;
-
-	/* low part */
-	x = src[1];
-	if (x - '0' <= '9' - '0')
-		return h | (x - '0');
-	if (x - 'a' <= 'f' - 'a')
-		return h | (x - 'a' + 10);
-	if (x - 'A' <= 'F' - 'A')
-		return h | (x - 'A' + 10);
-	return -1;
-}
-
-/**
- * wmi_swap_bytes - Rearrange GUID bytes to match GUID binary
- * @src:   Memory block holding binary GUID (16 bytes)
- * @dest:  Memory block to hold byte swapped binary GUID (16 bytes)
- *
- * Byte swap a binary GUID to match it's real GUID value
- */
-static void wmi_swap_bytes(u8 *src, u8 *dest)
-{
-	int i;
-
-	for (i = 0; i <= 3; i++)
-		memcpy(dest + i, src + (3 - i), 1);
-
-	for (i = 0; i <= 1; i++)
-		memcpy(dest + 4 + i, src + (5 - i), 1);
-
-	for (i = 0; i <= 1; i++)
-		memcpy(dest + 6 + i, src + (7 - i), 1);
-
-	memcpy(dest + 8, src + 8, 8);
-}
-
-/**
- * wmi_parse_guid - Convert GUID from ASCII to binary
- * @src:   36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
- * @dest:  Memory block to hold binary GUID (16 bytes)
- *
- * N.B. The GUID need not be NULL terminated.
- *
- * Return:  'true'   @dest contains binary GUID
- *          'false'  @dest contents are undefined
- */
-static bool wmi_parse_guid(const u8 *src, u8 *dest)
-{
-	static const int size[] = { 4, 2, 2, 2, 6 };
-	int i, j, v;
-
-	if (src[8]  != '-' || src[13] != '-' ||
-		src[18] != '-' || src[23] != '-')
-		return false;
-
-	for (j = 0; j < 5; j++, src++) {
-		for (i = 0; i < size[j]; i++, src += 2, *dest++ = v) {
-			v = wmi_parse_hexbyte(src);
-			if (v < 0)
-				return false;
-		}
-	}
-
-	return true;
-}
-
-static bool find_guid(const char *guid_string, struct wmi_block **out)
-{
-	char tmp[16], guid_input[16];
-	struct wmi_block *wblock;
-	struct guid_block *block;
-	struct list_head *p;
-
-	wmi_parse_guid(guid_string, tmp);
-	wmi_swap_bytes(tmp, guid_input);
-
-	list_for_each(p, &wmi_blocks.list) {
-		wblock = list_entry(p, struct wmi_block, list);
-		block = &wblock->gblock;
-
-		if (memcmp(block->guid, guid_input, 16) == 0) {
-			if (out)
-				*out = wblock;
-			return 1;
-		}
-	}
-	return 0;
-}
-
-static acpi_status wmi_method_enable(struct wmi_block *wblock, int enable)
-{
-	struct guid_block *block = NULL;
-	char method[5];
-	struct acpi_object_list input;
-	union acpi_object params[1];
-	acpi_status status;
-	acpi_handle handle;
-
-	block = &wblock->gblock;
-	handle = wblock->handle;
-
-	if (!block)
-		return AE_NOT_EXIST;
-
-	input.count = 1;
-	input.pointer = params;
-	params[0].type = ACPI_TYPE_INTEGER;
-	params[0].integer.value = enable;
-
-	snprintf(method, 5, "WE%02X", block->notify_id);
-	status = acpi_evaluate_object(handle, method, &input, NULL);
-
-	if (status != AE_OK && status != AE_NOT_FOUND)
-		return status;
-	else
-		return AE_OK;
-}
-
-/*
- * Exported WMI functions
- */
-/**
- * wmi_evaluate_method - Evaluate a WMI method
- * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
- * @instance: Instance index
- * @method_id: Method ID to call
- * &in: Buffer containing input for the method call
- * &out: Empty buffer to return the method results
- *
- * Call an ACPI-WMI method
- */
-acpi_status wmi_evaluate_method(const char *guid_string, u8 instance,
-u32 method_id, const struct acpi_buffer *in, struct acpi_buffer *out)
-{
-	struct guid_block *block = NULL;
-	struct wmi_block *wblock = NULL;
-	acpi_handle handle;
-	acpi_status status;
-	struct acpi_object_list input;
-	union acpi_object params[3];
-	char method[4] = "WM";
-
-	if (!find_guid(guid_string, &wblock))
-		return AE_ERROR;
-
-	block = &wblock->gblock;
-	handle = wblock->handle;
-
-	if (!(block->flags & ACPI_WMI_METHOD))
-		return AE_BAD_DATA;
-
-	if (block->instance_count < instance)
-		return AE_BAD_PARAMETER;
-
-	input.count = 2;
-	input.pointer = params;
-	params[0].type = ACPI_TYPE_INTEGER;
-	params[0].integer.value = instance;
-	params[1].type = ACPI_TYPE_INTEGER;
-	params[1].integer.value = method_id;
-
-	if (in) {
-		input.count = 3;
-
-		if (block->flags & ACPI_WMI_STRING) {
-			params[2].type = ACPI_TYPE_STRING;
-		} else {
-			params[2].type = ACPI_TYPE_BUFFER;
-		}
-		params[2].buffer.length = in->length;
-		params[2].buffer.pointer = in->pointer;
-	}
-
-	strncat(method, block->object_id, 2);
-
-	status = acpi_evaluate_object(handle, method, &input, out);
-
-	return status;
-}
-EXPORT_SYMBOL_GPL(wmi_evaluate_method);
-
-/**
- * wmi_query_block - Return contents of a WMI block
- * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
- * @instance: Instance index
- * &out: Empty buffer to return the contents of the data block to
- *
- * Return the contents of an ACPI-WMI data block to a buffer
- */
-acpi_status wmi_query_block(const char *guid_string, u8 instance,
-struct acpi_buffer *out)
-{
-	struct guid_block *block = NULL;
-	struct wmi_block *wblock = NULL;
-	acpi_handle handle, wc_handle;
-	acpi_status status, wc_status = AE_ERROR;
-	struct acpi_object_list input, wc_input;
-	union acpi_object wc_params[1], wq_params[1];
-	char method[4];
-	char wc_method[4] = "WC";
-
-	if (!guid_string || !out)
-		return AE_BAD_PARAMETER;
-
-	if (!find_guid(guid_string, &wblock))
-		return AE_ERROR;
-
-	block = &wblock->gblock;
-	handle = wblock->handle;
-
-	if (block->instance_count < instance)
-		return AE_BAD_PARAMETER;
-
-	/* Check GUID is a data block */
-	if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD))
-		return AE_ERROR;
-
-	input.count = 1;
-	input.pointer = wq_params;
-	wq_params[0].type = ACPI_TYPE_INTEGER;
-	wq_params[0].integer.value = instance;
-
-	/*
-	 * If ACPI_WMI_EXPENSIVE, call the relevant WCxx method first to
-	 * enable collection.
-	 */
-	if (block->flags & ACPI_WMI_EXPENSIVE) {
-		wc_input.count = 1;
-		wc_input.pointer = wc_params;
-		wc_params[0].type = ACPI_TYPE_INTEGER;
-		wc_params[0].integer.value = 1;
-
-		strncat(wc_method, block->object_id, 2);
-
-		/*
-		 * Some GUIDs break the specification by declaring themselves
-		 * expensive, but have no corresponding WCxx method. So we
-		 * should not fail if this happens.
-		 */
-		wc_status = acpi_get_handle(handle, wc_method, &wc_handle);
-		if (ACPI_SUCCESS(wc_status))
-			wc_status = acpi_evaluate_object(handle, wc_method,
-				&wc_input, NULL);
-	}
-
-	strcpy(method, "WQ");
-	strncat(method, block->object_id, 2);
-
-	status = acpi_evaluate_object(handle, method, &input, out);
-
-	/*
-	 * If ACPI_WMI_EXPENSIVE, call the relevant WCxx method, even if
-	 * the WQxx method failed - we should disable collection anyway.
-	 */
-	if ((block->flags & ACPI_WMI_EXPENSIVE) && ACPI_SUCCESS(wc_status)) {
-		wc_params[0].integer.value = 0;
-		status = acpi_evaluate_object(handle,
-		wc_method, &wc_input, NULL);
-	}
-
-	return status;
-}
-EXPORT_SYMBOL_GPL(wmi_query_block);
-
-/**
- * wmi_set_block - Write to a WMI block
- * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
- * @instance: Instance index
- * &in: Buffer containing new values for the data block
- *
- * Write the contents of the input buffer to an ACPI-WMI data block
- */
-acpi_status wmi_set_block(const char *guid_string, u8 instance,
-const struct acpi_buffer *in)
-{
-	struct guid_block *block = NULL;
-	struct wmi_block *wblock = NULL;
-	acpi_handle handle;
-	struct acpi_object_list input;
-	union acpi_object params[2];
-	char method[4] = "WS";
-
-	if (!guid_string || !in)
-		return AE_BAD_DATA;
-
-	if (!find_guid(guid_string, &wblock))
-		return AE_ERROR;
-
-	block = &wblock->gblock;
-	handle = wblock->handle;
-
-	if (block->instance_count < instance)
-		return AE_BAD_PARAMETER;
-
-	/* Check GUID is a data block */
-	if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD))
-		return AE_ERROR;
-
-	input.count = 2;
-	input.pointer = params;
-	params[0].type = ACPI_TYPE_INTEGER;
-	params[0].integer.value = instance;
-
-	if (block->flags & ACPI_WMI_STRING) {
-		params[1].type = ACPI_TYPE_STRING;
-	} else {
-		params[1].type = ACPI_TYPE_BUFFER;
-	}
-	params[1].buffer.length = in->length;
-	params[1].buffer.pointer = in->pointer;
-
-	strncat(method, block->object_id, 2);
-
-	return acpi_evaluate_object(handle, method, &input, NULL);
-}
-EXPORT_SYMBOL_GPL(wmi_set_block);
-
-/**
- * wmi_install_notify_handler - Register handler for WMI events
- * @handler: Function to handle notifications
- * @data: Data to be returned to handler when event is fired
- *
- * Register a handler for events sent to the ACPI-WMI mapper device.
- */
-acpi_status wmi_install_notify_handler(const char *guid,
-wmi_notify_handler handler, void *data)
-{
-	struct wmi_block *block;
-	acpi_status status;
-
-	if (!guid || !handler)
-		return AE_BAD_PARAMETER;
-
-	find_guid(guid, &block);
-	if (!block)
-		return AE_NOT_EXIST;
-
-	if (block->handler)
-		return AE_ALREADY_ACQUIRED;
-
-	block->handler = handler;
-	block->handler_data = data;
-
-	status = wmi_method_enable(block, 1);
-
-	return status;
-}
-EXPORT_SYMBOL_GPL(wmi_install_notify_handler);
-
-/**
- * wmi_uninstall_notify_handler - Unregister handler for WMI events
- *
- * Unregister handler for events sent to the ACPI-WMI mapper device.
- */
-acpi_status wmi_remove_notify_handler(const char *guid)
-{
-	struct wmi_block *block;
-	acpi_status status;
-
-	if (!guid)
-		return AE_BAD_PARAMETER;
-
-	find_guid(guid, &block);
-	if (!block)
-		return AE_NOT_EXIST;
-
-	if (!block->handler)
-		return AE_NULL_ENTRY;
-
-	status = wmi_method_enable(block, 0);
-
-	block->handler = NULL;
-	block->handler_data = NULL;
-
-	return status;
-}
-EXPORT_SYMBOL_GPL(wmi_remove_notify_handler);
-
-/**
- * wmi_get_event_data - Get WMI data associated with an event
- *
- * @event - Event to find
- * &out - Buffer to hold event data
- *
- * Returns extra data associated with an event in WMI.
- */
-acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out)
-{
-	struct acpi_object_list input;
-	union acpi_object params[1];
-	struct guid_block *gblock;
-	struct wmi_block *wblock;
-	struct list_head *p;
-
-	input.count = 1;
-	input.pointer = params;
-	params[0].type = ACPI_TYPE_INTEGER;
-	params[0].integer.value = event;
-
-	list_for_each(p, &wmi_blocks.list) {
-		wblock = list_entry(p, struct wmi_block, list);
-		gblock = &wblock->gblock;
-
-		if ((gblock->flags & ACPI_WMI_EVENT) &&
-			(gblock->notify_id == event))
-			return acpi_evaluate_object(wblock->handle, "_WED",
-				&input, out);
-	}
-
-	return AE_NOT_FOUND;
-}
-EXPORT_SYMBOL_GPL(wmi_get_event_data);
-
-/**
- * wmi_has_guid - Check if a GUID is available
- * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
- *
- * Check if a given GUID is defined by _WDG
- */
-bool wmi_has_guid(const char *guid_string)
-{
-	return find_guid(guid_string, NULL);
-}
-EXPORT_SYMBOL_GPL(wmi_has_guid);
-
-/*
- * Parse the _WDG method for the GUID data blocks
- */
-static __init acpi_status parse_wdg(acpi_handle handle)
-{
-	struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
-	union acpi_object *obj;
-	struct guid_block *gblock;
-	struct wmi_block *wblock;
-	acpi_status status;
-	u32 i, total;
-
-	status = acpi_evaluate_object(handle, "_WDG", NULL, &out);
-
-	if (ACPI_FAILURE(status))
-		return status;
-
-	obj = (union acpi_object *) out.pointer;
-
-	if (obj->type != ACPI_TYPE_BUFFER)
-		return AE_ERROR;
-
-	total = obj->buffer.length / sizeof(struct guid_block);
-
-	gblock = kzalloc(obj->buffer.length, GFP_KERNEL);
-	if (!gblock)
-		return AE_NO_MEMORY;
-
-	memcpy(gblock, obj->buffer.pointer, obj->buffer.length);
-
-	for (i = 0; i < total; i++) {
-		wblock = kzalloc(sizeof(struct wmi_block), GFP_KERNEL);
-		if (!wblock)
-			return AE_NO_MEMORY;
-
-		wblock->gblock = gblock[i];
-		wblock->handle = handle;
-		list_add_tail(&wblock->list, &wmi_blocks.list);
-	}
-
-	kfree(out.pointer);
-	kfree(gblock);
-
-	return status;
-}
-
-/*
- * WMI can have EmbeddedControl access regions. In which case, we just want to
- * hand these off to the EC driver.
- */
-static acpi_status
-acpi_wmi_ec_space_handler(u32 function, acpi_physical_address address,
-		      u32 bits, acpi_integer * value,
-		      void *handler_context, void *region_context)
-{
-	int result = 0, i = 0;
-	u8 temp = 0;
-
-	if ((address > 0xFF) || !value)
-		return AE_BAD_PARAMETER;
-
-	if (function != ACPI_READ && function != ACPI_WRITE)
-		return AE_BAD_PARAMETER;
-
-	if (bits != 8)
-		return AE_BAD_PARAMETER;
-
-	if (function == ACPI_READ) {
-		result = ec_read(address, &temp);
-		(*value) |= ((acpi_integer)temp) << i;
-	} else {
-		temp = 0xff & ((*value) >> i);
-		result = ec_write(address, temp);
-	}
-
-	switch (result) {
-	case -EINVAL:
-		return AE_BAD_PARAMETER;
-		break;
-	case -ENODEV:
-		return AE_NOT_FOUND;
-		break;
-	case -ETIME:
-		return AE_TIME;
-		break;
-	default:
-		return AE_OK;
-	}
-}
-
-static void acpi_wmi_notify(acpi_handle handle, u32 event, void *data)
-{
-	struct guid_block *block;
-	struct wmi_block *wblock;
-	struct list_head *p;
-	struct acpi_device *device = data;
-
-	list_for_each(p, &wmi_blocks.list) {
-		wblock = list_entry(p, struct wmi_block, list);
-		block = &wblock->gblock;
-
-		if ((block->flags & ACPI_WMI_EVENT) &&
-			(block->notify_id == event)) {
-			if (wblock->handler)
-				wblock->handler(event, wblock->handler_data);
-
-			acpi_bus_generate_netlink_event(
-				device->pnp.device_class, dev_name(&device->dev),
-				event, 0);
-			break;
-		}
-	}
-}
-
-static int acpi_wmi_remove(struct acpi_device *device, int type)
-{
-	acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
-		acpi_wmi_notify);
-
-	acpi_remove_address_space_handler(device->handle,
-				ACPI_ADR_SPACE_EC, &acpi_wmi_ec_space_handler);
-
-	return 0;
-}
-
-static int __init acpi_wmi_add(struct acpi_device *device)
-{
-	acpi_status status;
-	int result = 0;
-
-	status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
-		acpi_wmi_notify, device);
-	if (ACPI_FAILURE(status)) {
-		printk(KERN_ERR PREFIX "Error installing notify handler\n");
-		return -ENODEV;
-	}
-
-	status = acpi_install_address_space_handler(device->handle,
-						    ACPI_ADR_SPACE_EC,
-						    &acpi_wmi_ec_space_handler,
-						    NULL, NULL);
-	if (ACPI_FAILURE(status))
-		return -ENODEV;
-
-	status = parse_wdg(device->handle);
-	if (ACPI_FAILURE(status)) {
-		printk(KERN_ERR PREFIX "Error installing EC region handler\n");
-		return -ENODEV;
-	}
-
-	return result;
-}
-
-static int __init acpi_wmi_init(void)
-{
-	acpi_status result;
-
-	INIT_LIST_HEAD(&wmi_blocks.list);
-
-	if (acpi_disabled)
-		return -ENODEV;
-
-	result = acpi_bus_register_driver(&acpi_wmi_driver);
-
-	if (result < 0) {
-		printk(KERN_INFO PREFIX "Error loading mapper\n");
-	} else {
-		printk(KERN_INFO PREFIX "Mapper loaded\n");
-	}
-
-	return result;
-}
-
-static void __exit acpi_wmi_exit(void)
-{
-	struct list_head *p, *tmp;
-	struct wmi_block *wblock;
-
-	acpi_bus_unregister_driver(&acpi_wmi_driver);
-
-	list_for_each_safe(p, tmp, &wmi_blocks.list) {
-		wblock = list_entry(p, struct wmi_block, list);
-
-		list_del(p);
-		kfree(wblock);
-	}
-
-	printk(KERN_INFO PREFIX "Mapper unloaded\n");
-}
-
-subsys_initcall(acpi_wmi_init);
-module_exit(acpi_wmi_exit);