patch-2.4.22 linux-2.4.22/drivers/acpi/ospm/busmgr/bmpower.c

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diff -urN linux-2.4.21/drivers/acpi/ospm/busmgr/bmpower.c linux-2.4.22/drivers/acpi/ospm/busmgr/bmpower.c
@@ -1,664 +0,0 @@
-/****************************************************************************
- *
- * Module Name: bmpower.c - Driver for ACPI Power Resource 'devices'
- *   $Revision: 20 $
- *
- ****************************************************************************/
-
-/*
- *  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
- */
-
-/*
- * TBD: 1. Sequencing of power resource list transitions.
- *	2. Global serialization of power resource transtions (see ACPI
- *         spec section 7.1.2/7.1.3).
- *      3. Better error handling.
- */
-
-
-#include <acpi.h>
-#include "bm.h"
-#include "bmpower.h"
-
-
-#define _COMPONENT		ACPI_BUS
-	MODULE_NAME		("bmpower")
-
-
-/****************************************************************************
- *                             Function Prototypes
- ****************************************************************************/
-
-acpi_status
-bm_pr_notify (
-	BM_NOTIFY               notify_type,
-	BM_HANDLE               device_handle,
-	void                    **context);
-	
-acpi_status
-bm_pr_request (
-	BM_REQUEST		*request,
-	void                    *context);
-
-	
-/****************************************************************************
- *                             Internal Functions
- ****************************************************************************/
-
-/****************************************************************************
- *
- * FUNCTION:    bm_pr_print
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_pr_print (
-	BM_POWER_RESOURCE	*pr)
-{
-	acpi_buffer             buffer;
-
-	PROC_NAME("bm_pr_print");
-
-	if (!pr) {
-		return(AE_BAD_PARAMETER);
-	}
-
-	buffer.length = 256;
-	buffer.pointer = acpi_os_callocate(buffer.length);
-	if (!buffer.pointer) {
-		return(AE_NO_MEMORY);
-	}
-
-	acpi_get_name(pr->acpi_handle, ACPI_FULL_PATHNAME, &buffer);
-
-	acpi_os_printf("Power Resource: found\n");
-
-	ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "+------------------------------------------------------------\n"));
-	ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "| Power_resource[%02x]:[%p] %s\n", pr->device_handle, pr->acpi_handle, (char*)buffer.pointer));
-	ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "|   system_level[S%d] resource_order[%d]\n", pr->system_level, pr->resource_order));
-	ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "|   state[D%d] reference_count[%d]\n", pr->state, pr->reference_count));
-	ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "+------------------------------------------------------------\n"));
-
-	acpi_os_free(buffer.pointer);
-
-	return(AE_OK);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_pr_get_state
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_pr_get_state (
-	BM_POWER_RESOURCE	*pr)
-{
-	acpi_status             status = AE_OK;
-	BM_DEVICE_STATUS        device_status = BM_STATUS_UNKNOWN;
-
-	FUNCTION_TRACE("bm_pr_get_state");
-
-	if (!pr) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	pr->state = ACPI_STATE_UNKNOWN;
-
-	/*
-	 * Evaluate _STA:
-	 * --------------
-	 * Evalute _STA to determine whether the power resource is ON or OFF.
-	 * Note that if the power resource isn't present we'll get AE_OK but
-	 * an unknown status.
-	 */
-	status = bm_get_device_status(pr->device_handle, &device_status);
-	if (ACPI_FAILURE(status)) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Error reading status for power resource [%02x].\n", pr->device_handle));
-		return_ACPI_STATUS(status);
-	}
-
-	/*
-	 * Mask off all bits but the first as some systems return non-standard
-	 * values (e.g. 0x51).
-	 */
-	switch (device_status & 0x01) {
-	case 0:
-		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Power resource [%02x] is OFF.\n", pr->device_handle));
-		pr->state = ACPI_STATE_D3;
-		break;
-	case 1:
-		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Power resource [%02x] is ON.\n", pr->device_handle));
-		pr->state = ACPI_STATE_D0;
-		break;
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_pr_set_state
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_pr_set_state (
-	BM_POWER_RESOURCE	*pr,
-	BM_POWER_STATE          target_state)
-{
-	acpi_status             status = AE_OK;
-
-	FUNCTION_TRACE("bm_pr_set_state");
-
-	if (!pr) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	status = bm_pr_get_state(pr);
-	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
-	}
-
-	if (target_state == pr->state) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Power resource [%02x] already at target power state [D%d].\n", pr->device_handle, pr->state));
-		return_ACPI_STATUS(AE_OK);
-	}
-
-	switch (target_state) {
-
-	case ACPI_STATE_D0:
-		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Turning power resource [%02x] ON.\n", pr->device_handle));
-		status = bm_evaluate_object(pr->acpi_handle, "_ON", NULL, NULL);
-		break;
-
-	case ACPI_STATE_D3:
-		ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Turning power resource [%02x] OFF.\n", pr->device_handle));
-		status = bm_evaluate_object(pr->acpi_handle, "_OFF", NULL, NULL);
-		break;
-
-	default:
-		status = AE_BAD_PARAMETER;
-		break;
-	}
-
-	status = bm_pr_get_state(pr);
-	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_pr_list_get_state
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_pr_list_get_state (
-	BM_HANDLE_LIST          *pr_list,
-	BM_POWER_STATE          *power_state)
-{
-	acpi_status             status = AE_OK;
-	BM_POWER_RESOURCE	*pr = NULL;
-	u32                     i = 0;
-
-	FUNCTION_TRACE("bm_pr_list_get_state");
-
-	if (!pr_list || !power_state) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	if (pr_list->count < 1) {
-		pr->state = ACPI_STATE_UNKNOWN;
-		return_ACPI_STATUS(AE_ERROR);
-	}
-
-	(*power_state) = ACPI_STATE_D0;
-
-	/*
-	 * Calculate Current power_state:
-	 * -----------------------------
-	 * The current state of a list of power resources is ON if all
-	 * power resources are currently in the ON state.  In other words,
-	 * if any power resource in the list is OFF then the collection
-	 * isn't fully ON.
-	 */
-	for (i = 0; i < pr_list->count; i++) {
-
-		status = bm_get_device_context(pr_list->handles[i],
-			(BM_DRIVER_CONTEXT*)(&pr));
-		if (ACPI_FAILURE(status)) {
-			ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Invalid reference to power resource [%02x].\n", pr_list->handles[i]));
-			(*power_state) = ACPI_STATE_UNKNOWN;
-			break;
-		}
-
-		status = bm_pr_get_state(pr);
-		if (ACPI_FAILURE(status)) {
-			(*power_state) = ACPI_STATE_UNKNOWN;
-			break;
-		}
-
-		if (pr->state != ACPI_STATE_D0) {
-			(*power_state) = pr->state;
-			break;
-		}
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_pr_list_transition
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_pr_list_transition (
-	BM_HANDLE_LIST          *current_list,
-	BM_HANDLE_LIST          *target_list)
-{
-	acpi_status             status = AE_OK;
-	BM_POWER_RESOURCE	*pr = NULL;
-	u32                     i = 0;
-
-	FUNCTION_TRACE("bm_pr_list_transition");
-
-	if (!current_list || !target_list) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	/*
-	 * Reference Target:
-	 * -----------------
-	 * Reference all resources for the target power state first (so
-	 * the device doesn't get turned off while transitioning).  Power
-	 * resources that aren't on (new reference count of 1) are turned on.
-	 */
-	for (i = 0; i < target_list->count; i++) {
-
-		status = bm_get_device_context(target_list->handles[i],
-			(BM_DRIVER_CONTEXT*)(&pr));
-		if (ACPI_FAILURE(status)) {
-			ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Invalid reference to power resource [%02x].\n", target_list->handles[i]));
-			continue;
-		}
-
-		if (++pr->reference_count == 1) {
-			/* TBD: Need ordering based upon resource_order */
-			status = bm_pr_set_state(pr, ACPI_STATE_D0);
-			if (ACPI_FAILURE(status)) {
-				/* TBD: How do we handle this? */
-				ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Unable to change power state for power resource [%02x].\n", target_list->handles[i]));
-			}
-		}
-	}
-
-	/*
-	 * Dereference Current:
-	 * --------------------
-	 * Dereference all resources for the current power state.  Power
-	 * resources no longer referenced (new reference count of 0) are
-	 * turned off.
-	 */
-	for (i = 0; i < current_list->count; i++) {
-
-		status = bm_get_device_context(current_list->handles[i],
-			(BM_DRIVER_CONTEXT*)(&pr));
-		if (ACPI_FAILURE(status)) {
-			ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Invalid reference to power resource [%02x].\n", target_list->handles[i]));
-			continue;
-		}
-
-		if (--pr->reference_count == 0) {
-			/* TBD: Need ordering based upon resource_order */
-			status = bm_pr_set_state(pr, ACPI_STATE_D3);
-			if (ACPI_FAILURE(status)) {
-				/* TBD: How do we handle this? */
-				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unable to change power state for power resource [%02x].\n", current_list->handles[i]));
-			}
-		}
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_pr_add_device
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_pr_add_device (
-	BM_HANDLE               device_handle,
-	void                    **context)
-{
-	acpi_status             status = AE_OK;
-	BM_POWER_RESOURCE	*pr = NULL;
-	BM_DEVICE		*device = NULL;
-	acpi_buffer		buffer;
-	acpi_object		acpi_object;
-
-	FUNCTION_TRACE("bm_pr_add_device");
-
-	ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Adding power resource [%02x].\n", device_handle));
-
-	if (!context || *context) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	buffer.length = sizeof(acpi_object);
-	buffer.pointer = &acpi_object;
-
-	/*
-	 * Get information on this device.
-	 */
-	status = bm_get_device_info(device_handle, &device);
-	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
-	}
-
-	/*
-	 * Allocate a new BM_POWER_RESOURCE structure.
-	 */
-	pr = acpi_os_callocate(sizeof(BM_POWER_RESOURCE));
-	if (!pr) {
-		return_ACPI_STATUS(AE_NO_MEMORY);
-	}
-
-	pr->device_handle = device->handle;
-	pr->acpi_handle = device->acpi_handle;
-
-	/*
-	 * Get information on this power resource.
-	 */
-	status = acpi_evaluate_object(pr->acpi_handle, NULL, NULL, &buffer);
-	if (ACPI_FAILURE(status)) {
-		goto end;
-	}
-
-	pr->system_level = acpi_object.power_resource.system_level;
-	pr->resource_order = acpi_object.power_resource.resource_order;
-	pr->state = ACPI_STATE_UNKNOWN;
-	pr->reference_count = 0;
-
-	/*
-	 * Get the power resource's current state (ON|OFF).
-	 */
-	status = bm_pr_get_state(pr);
-
-end:
-	if (ACPI_FAILURE(status)) {
-		acpi_os_free(pr);
-	}
-	else {
-		*context = pr;
-		bm_pr_print(pr);
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_pr_remove_device
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_pr_remove_device (
-	void                    **context)
-{
-	acpi_status             status = AE_OK;
-	BM_POWER_RESOURCE	*pr = NULL;
-
-	FUNCTION_TRACE("bm_pr_remove_device");
-
-	if (!context || !*context) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	pr = (BM_POWER_RESOURCE*)*context;
-
-	ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Removing power resource [%02x].\n", pr->device_handle));
-
-	acpi_os_free(pr);
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *                             External Functions
- ****************************************************************************/
-
-/****************************************************************************
- *
- * FUNCTION:    bm_pr_initialize
- *
- * PARAMETERS:  <none>
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_pr_initialize (void)
-{
-	acpi_status             status = AE_OK;
-	BM_DEVICE_ID		criteria;
-	BM_DRIVER		driver;
-
-	FUNCTION_TRACE("bm_pr_initialize");
-
-	MEMSET(&criteria, 0, sizeof(BM_DEVICE_ID));
-	MEMSET(&driver, 0, sizeof(BM_DRIVER));
-
-	criteria.type = BM_TYPE_POWER_RESOURCE;
-
-	driver.notify = &bm_pr_notify;
-	driver.request = &bm_pr_request;
-
-	status = bm_register_driver(&criteria, &driver);
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_pr_terminate
- *
- * PARAMETERS:
- *
- * RETURN:	
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_pr_terminate (void)
-{
-	acpi_status             status = AE_OK;
-	BM_DEVICE_ID		criteria;
-	BM_DRIVER		driver;
-
-	FUNCTION_TRACE("bm_pr_terminate");
-
-	MEMSET(&criteria, 0, sizeof(BM_DEVICE_ID));
-	MEMSET(&driver, 0, sizeof(BM_DRIVER));
-
-	criteria.type = BM_TYPE_POWER_RESOURCE;
-
-	driver.notify = &bm_pr_notify;
-	driver.request = &bm_pr_request;
-
-	status = bm_unregister_driver(&criteria, &driver);
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_pr_notify
- *
- * PARAMETERS:
- *
- * RETURN:	
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_pr_notify (
-	BM_NOTIFY               notify_type,
-	BM_HANDLE               device_handle,
-	void                    **context)
-{
-	acpi_status             status = AE_OK;
-
-	FUNCTION_TRACE("bm_pr_notify");
-
-	switch (notify_type) {
-
-	case BM_NOTIFY_DEVICE_ADDED:
-		status = bm_pr_add_device(device_handle, context);
-		break;
-
-	case BM_NOTIFY_DEVICE_REMOVED:
-		status = bm_pr_remove_device(context);
-		break;
-
-	default:
-		status = AE_SUPPORT;
-		break;
-	}
-
-	return_ACPI_STATUS(status);
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_pr_request
- *
- * PARAMETERS:
- *
- * RETURN:
- *
- * DESCRIPTION:
- *
- ****************************************************************************/
-
-acpi_status
-bm_pr_request (
-	BM_REQUEST		*request,
-	void                    *context)
-{
-	acpi_status             status = AE_OK;
-	BM_POWER_RESOURCE	*pr = NULL;
-
-	FUNCTION_TRACE("bm_pr_request");
-
-	/*
-	 * Must have a valid request structure and context.
-	 */
-	if (!request || !context) {
-		return_ACPI_STATUS(AE_BAD_PARAMETER);
-	}
-
-	/*
-	 * context contains information specific to this power resource.
-	 */
-	pr = (BM_POWER_RESOURCE*)context;
-
-	/*
-	 * Handle request:
-	 * ---------------
-	 */
-	switch (request->command) {
-
-	default:
-		status = AE_SUPPORT;
-		break;
-	}
-
-	request->status = status;
-
-	return_ACPI_STATUS(status);
-}
-
-
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