patch-2.4.22 linux-2.4.22/drivers/acpi/ospm/battery/bt.c

• Lines: 655
• Date: 1969-12-31 16:00:00.000000000 -0800
• Orig file: linux-2.4.21/drivers/acpi/ospm/battery/bt.c
• Orig date: 2001-10-24 14:06:22.000000000 -0700

diff -urN linux-2.4.21/drivers/acpi/ospm/battery/bt.c linux-2.4.22/drivers/acpi/ospm/battery/bt.c
@@ -1,654 +0,0 @@
-/*****************************************************************************
- *
- * Module Name: bt.c
- *   $Revision: 29 $
- *
- *****************************************************************************/
-
-/*
- *  Copyright (C) 2000, 2001 Andrew Grover
- *
- *  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 <acpi.h>
-#include "bt.h"
-
-
-#define _COMPONENT		ACPI_BATTERY
-	MODULE_NAME 		("bt")
-
-
-/****************************************************************************
- *                            Internal Functions
- ****************************************************************************/
-
-/****************************************************************************
- *
- * FUNCTION:	bt_print
- *
- * PARAMETERS:	
- *
- * RETURN:	
- *
- * DESCRIPTION: Prints out information on a specific battery.
- *
- ****************************************************************************/
-
-void
-bt_print (
-	BT_CONTEXT		*battery)
-{
-#ifdef ACPI_DEBUG
-	acpi_buffer 		buffer;
-
-	PROC_NAME("bt_print");
-
-	if (!battery) {
-		return;
-	}
-
-	buffer.length = 256;
-	buffer.pointer = acpi_os_callocate(buffer.length);
-	if (!buffer.pointer) {
-		return;
-	}
-
-	/*
-	 * Get the full pathname for this ACPI object.
-	 */
-	acpi_get_name(battery->acpi_handle, ACPI_FULL_PATHNAME, &buffer);
-
-	/*
-	 * Print out basic battery information.
-	 */
-
-	ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "+------------------------------------------------------------\n"));
-	ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "| Battery[%02x]:[%p] %s\n", battery->device_handle, battery->acpi_handle, (char*)buffer.pointer));
-	ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "|   uid[%s] is_present[%d] power_units[%s]\n", battery->uid, battery->is_present, battery->power_units));
-	ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "+------------------------------------------------------------\n"));
-
-	acpi_os_free(buffer.pointer);
-#endif /*ACPI_DEBUG*/
-
-	return;
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:	bt_get_info
- *
- * PARAMETERS:	
- *
- * RETURN:	
- *
- * DESCRIPTION:
- *
- * NOTES:	Allocates battery_info - which must be freed by the caller.
- *
- ****************************************************************************/
-
-acpi_status
-bt_get_info (
-	BT_CONTEXT		*battery,
-	BT_BATTERY_INFO 	**battery_info)
-{
-	acpi_status 		status = AE_OK;
-	acpi_buffer 		bif_buffer, package_format, package_data;
-	acpi_object 		*package = NULL;
-
-	FUNCTION_TRACE("bt_get_info");
-
-	if (!battery || !battery_info || *battery_info) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	memset(&bif_buffer, 0, sizeof(acpi_buffer));
-
-	/*
-	 * Evalute _BIF:
-	 * -------------
-	 * And be sure to deallocate bif_buffer.pointer!
-	 */
-	status = bm_evaluate_object(battery->acpi_handle, "_BIF", NULL,
-		&bif_buffer);
-	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
-	}
-
-	/*
-	 * Extract Package Data:
-	 * ---------------------
-	 * Type-cast this bif_buffer to a package and use helper
-	 * functions to convert results into BT_BATTERY_INFO structure.
-	 * The first attempt is just to get the size of the package
-	 * data; the second gets the data (once we know the required
-	 * bif_buffer size).
-	 */
-	status = bm_cast_buffer(&bif_buffer, (void**)&package,
-		sizeof(acpi_object));
-	if (ACPI_FAILURE(status)) {
-		goto end;
-	}
-
-	package_format.length = sizeof("NNNNNNNNNSSSS");
-	package_format.pointer = "NNNNNNNNNSSSS";
-
-	memset(&package_data, 0, sizeof(acpi_buffer));
-
-	status = bm_extract_package_data(package, &package_format,
-		&package_data);
-	if (status != AE_BUFFER_OVERFLOW) {
-		if (status == AE_OK) {
-			status = AE_ERROR;
-		}
-		goto end;
-	}
-
-	package_data.pointer = acpi_os_callocate(package_data.length);
-	if (!package_data.pointer) {
-		return_ACPI_STATUS(AE_NO_MEMORY);
-	}
-
-	status = bm_extract_package_data(package, &package_format,
-		&package_data);
-	if (ACPI_FAILURE(status)) {
-		acpi_os_free(package_data.pointer);
-		goto end;
-	}
-
-	*battery_info = package_data.pointer;
-
-end:
-	acpi_os_free(bif_buffer.pointer);
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:	bt_get_status
- *
- * PARAMETERS:	
- *
- * RETURN:	
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bt_get_status (
-	BT_CONTEXT		*battery,
-	BT_BATTERY_STATUS	**battery_status)
-{
-	acpi_status 		status = AE_OK;
-	acpi_buffer 		bst_buffer, package_format, package_data;
-	acpi_object 		*package = NULL;
-
-	FUNCTION_TRACE("bt_get_status");
-
-	if (!battery || !battery_status || *battery_status) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	memset(&bst_buffer, 0, sizeof(acpi_buffer));
-
-	/*
-	 * Evalute _BST:
-	 * -------------
-	 * And be sure to deallocate bst_buffer.pointer!
-	 */
-	status = bm_evaluate_object(battery->acpi_handle, "_BST",
-		NULL, &bst_buffer);
-	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
-	}
-
-	/*
-	 * Extract Package Data:
-	 * ---------------------
-	 * Type-cast this bst_buffer to a package and use helper
-	 * functions to convert results into BT_BATTERY_STATUS structure.
-	 * The first attempt is just to get the size of the package data;
-	 * the second gets the data (once we know the required bst_buffer
-	 * size).
-	 */
-	status = bm_cast_buffer(&bst_buffer, (void**)&package,
-		sizeof(acpi_object));
-	if (ACPI_FAILURE(status)) {
-		goto end;
-	}
-
-	package_format.length = sizeof("NNNN");
-	package_format.pointer = "NNNN";
-
-	memset(&package_data, 0, sizeof(acpi_buffer));
-
-	status = bm_extract_package_data(package, &package_format,
-		&package_data);
-	if (status != AE_BUFFER_OVERFLOW) {
-		if (status == AE_OK) {
-			status = AE_ERROR;
-		}
-		goto end;
-	}
-
-	package_data.pointer = acpi_os_callocate(package_data.length);
-	if (!package_data.pointer) {
-		return_ACPI_STATUS(AE_NO_MEMORY);
-	}
-
-	status = bm_extract_package_data(package, &package_format,
-		&package_data);
-	if (ACPI_FAILURE(status)) {
-		acpi_os_free(package_data.pointer);
-		goto end;
-	}
-
-	*battery_status = package_data.pointer;
-
-end:
-	acpi_os_free(bst_buffer.pointer);
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:	bt_check_device
- *
- * PARAMETERS:	
- *
- * RETURN:	
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bt_check_device (
-	BT_CONTEXT		*battery)
-{
-	acpi_status 		status = AE_OK;
-	BM_DEVICE_STATUS	battery_status = BM_STATUS_UNKNOWN;
-	u32 			was_present = FALSE;
-	BT_BATTERY_INFO 	*battery_info = NULL;
-
-	FUNCTION_TRACE("bt_check_device");
-
-	if (!battery) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	was_present = battery->is_present;
-
-	/*
-	 * Battery Present?
-	 * ----------------
-	 * Get the device status and check if battery slot is occupied.
-	 */
-	status = bm_get_device_status(battery->device_handle, &battery_status);
-	if (ACPI_FAILURE(status)) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Unable to get battery status.\n"));
-		return_ACPI_STATUS(status);
-	}
-
-	if (battery_status & BM_STATUS_BATTERY_PRESENT) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Battery socket occupied.\n"));
-		battery->is_present = TRUE;
-	}
-	else {
-		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Battery socket not occupied.\n"));
-		battery->is_present = FALSE;
-	}
-
-	/*
-	 * Battery Appeared?
-	 * -----------------
-	 */
-	if (!was_present && battery->is_present) {
-
-		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Battery insertion detected.\n"));
-
-		/*
-		 * Units of Power?
-		 * ---------------
-		 * Get the 'units of power', as we'll need this to report
-		 * status information.
-		 */
-		status = bt_get_info(battery, &battery_info);
-		if (ACPI_SUCCESS(status)) {
-			battery->power_units = (battery_info->power_unit)
-				? BT_POWER_UNITS_AMPS : BT_POWER_UNITS_WATTS;
-			acpi_os_free(battery_info);
-		}
-	}
-
-	/*
-	 * Battery Disappeared?
-	 * --------------------
-	 */
-	else if (was_present && !battery->is_present) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Battery removal detected.\n"));
-		battery->power_units = BT_POWER_UNITS_DEFAULT;
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-
-/*****************************************************************************
- *
- * FUNCTION:	bt_add_device
- *
- * PARAMETERS:	
- *
- * RETURN:	
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bt_add_device (
-	BM_HANDLE		device_handle,
-	void			**context)
-{
-	acpi_status 		status = AE_OK;
-	BM_DEVICE		*device = NULL;
-	BT_CONTEXT		*battery = NULL;
-
-	FUNCTION_TRACE("bt_add_device");
-
-	ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Adding battery device [%02x].\n", device_handle));
-
-	if (!context || *context) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	/*
-	 * Get information on this device.
-	 */
-	status = bm_get_device_info(device_handle, &device);
-	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
-	}
-
-	/*
-	 * Allocate a new BT_CONTEXT structure.
-	 */
-	battery = acpi_os_callocate(sizeof(BT_CONTEXT));
-	if (!battery) {
-		return_ACPI_STATUS(AE_NO_MEMORY);
-	}
-
-	battery->device_handle = device->handle;
-	battery->acpi_handle = device->acpi_handle;
-	strncpy(battery->uid, device->id.uid, sizeof(battery->uid));
-
-	battery->power_units = BT_POWER_UNITS_DEFAULT;
-	battery->is_present = FALSE;
-
-	/*
-	 * See if battery is really present.
-	 */
-	status = bt_check_device(battery);
-	if (ACPI_FAILURE(status)) {
-		goto end;
-	}
-
-	status = bt_osl_add_device(battery);
-	if (ACPI_FAILURE(status)) {
-		goto end;
-	}
-
-	*context = battery;
-
-	bt_print(battery);
-
-end:
-	if (ACPI_FAILURE(status)) {
-		acpi_os_free(battery);
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-
-/*****************************************************************************
- *
- * FUNCTION:	bt_remove_device
- *
- * PARAMETERS:	
- *
- * RETURN:	
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bt_remove_device (
-	void			**context)
-{
-	acpi_status 		status = AE_OK;
-	BT_CONTEXT		*battery = NULL;
-
-	FUNCTION_TRACE("bt_remove_device");
-
-	if (!context || !*context) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	battery = (BT_CONTEXT*)*context;
-
-	ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Removing battery device [%02x].\n", battery->device_handle));
-
-	bt_osl_remove_device(battery);
-
-	acpi_os_free(battery);
-
-	*context = NULL;
-
-	return_ACPI_STATUS(status);
-}
-
-
-/*****************************************************************************
- *                               External Functions
- *****************************************************************************/
-
-/*****************************************************************************
- *
- * FUNCTION:	bt_initialize
- *
- * PARAMETERS:	<none>
- *
- * RETURN:	
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bt_initialize (void)
-{
-	acpi_status		status = AE_OK;
-	BM_DEVICE_ID		criteria;
-	BM_DRIVER		driver;
-
-	FUNCTION_TRACE("bt_initialize");
-
-	memset(&criteria, 0, sizeof(BM_DEVICE_ID));
-	memset(&driver, 0, sizeof(BM_DRIVER));
-
-	/*
-	 * Register driver for driver method battery devices.
-	 */
-	MEMCPY(criteria.hid, BT_HID_CM_BATTERY, sizeof(BT_HID_CM_BATTERY));
-
-	driver.notify = &bt_notify;
-	driver.request = &bt_request;
-
-	status = bm_register_driver(&criteria, &driver);
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:	bt_terminate
- *
- * PARAMETERS:	<none>
- *
- * RETURN:	
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bt_terminate (void)
-{
-	acpi_status		status = AE_OK;
-	BM_DEVICE_ID		criteria;
-	BM_DRIVER		driver;
-
-	FUNCTION_TRACE("bt_terminate");
-
-	memset(&criteria, 0, sizeof(BM_DEVICE_ID));
-	memset(&driver, 0, sizeof(BM_DRIVER));
-
-	/*
-	 * Unregister driver for driver method battery devices.
-	 */
-	MEMCPY(criteria.hid, BT_HID_CM_BATTERY, sizeof(BT_HID_CM_BATTERY));
-
-	driver.notify = &bt_notify;
-	driver.request = &bt_request;
-
-	status = bm_unregister_driver(&criteria, &driver);
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:	bt_notify
- *
- * PARAMETERS:	<none>
- *
- * RETURN:	
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bt_notify (
-	BM_NOTIFY		notify_type,
-	BM_HANDLE		device_handle,
-	void			**context)
-{
-	acpi_status 		status = AE_OK;
-
-	FUNCTION_TRACE("bt_notify");
-
-	if (!context) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	switch (notify_type) {
-
-	case BM_NOTIFY_DEVICE_ADDED:
-		status = bt_add_device(device_handle, context);
-		break;
-
-	case BM_NOTIFY_DEVICE_REMOVED:
-		status = bt_remove_device(context);
-		break;
-
-	case BT_NOTIFY_STATUS_CHANGE:
-		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Status change (_BST) event detected.\n"));
-		status = bt_osl_generate_event(notify_type,
-			((BT_CONTEXT*)*context));
-		break;
-
-	case BT_NOTIFY_INFORMATION_CHANGE:
-		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Information change (_BIF) event detected.\n"));
-		status = bt_check_device((BT_CONTEXT*)*context);
-		if (ACPI_SUCCESS(status)) {
-			status = bt_osl_generate_event(notify_type,
-				((BT_CONTEXT*)*context));
-		}
-		break;
-
-	default:
-		status = AE_SUPPORT;
-		break;
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:	bt_request
- *
- * PARAMETERS:	
- *
- * RETURN:	
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bt_request (
-	BM_REQUEST		*request,
-	void			*context)
-{
-	acpi_status 		status = AE_OK;
-
-	FUNCTION_TRACE("bt_request");
-
-	/*
-	 * Must have a valid request structure and context.
-	 */
-	if (!request || !context)
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-
-	/*
-	 * Handle request:
-	 * ---------------
-	 */
-	switch (request->command) {
-
-	default:
-		status = AE_SUPPORT;
-		break;
-	}
-
-	request->status = status;
-
-	return_ACPI_STATUS(status);
-}