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/*****************************************************************************
*
* Module Name: ac.c
* $Revision: 23 $
*
*****************************************************************************/
/*
* 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 "ac.h"
#define _COMPONENT ACPI_AC_ADAPTER
MODULE_NAME ("ac")
/****************************************************************************
* Internal Functions
****************************************************************************/
/****************************************************************************
*
* FUNCTION: ac_print
*
* PARAMETERS:
*
* RETURN:
*
* DESCRIPTION: Prints out information on a specific ac_adapter.
*
****************************************************************************/
void
ac_print (
AC_CONTEXT *ac_adapter)
{
#ifdef ACPI_DEBUG
acpi_buffer buffer;
PROC_NAME("ac_print");
if (!ac_adapter) {
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(ac_adapter->acpi_handle, ACPI_FULL_PATHNAME, &buffer);
/*
* Print out basic adapter information.
*/
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "+------------------------------------------------------------\n"));
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "| AC Adapter[%02x]:[%p] %s\n", ac_adapter->device_handle, ac_adapter->acpi_handle, (char*)buffer.pointer));
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO, "+------------------------------------------------------------\n"));
acpi_os_free(buffer.pointer);
#endif /*ACPI_DEBUG*/
return;
}
/****************************************************************************
*
* FUNCTION: ac_add_device
*
* PARAMETERS:
*
* RETURN:
*
* DESCRIPTION:
*
****************************************************************************/
acpi_status
ac_add_device(
BM_HANDLE device_handle,
void **context)
{
acpi_status status = AE_OK;
BM_DEVICE *device = NULL;
AC_CONTEXT *ac_adapter = NULL;
acpi_device_info info;
FUNCTION_TRACE("ac_add_device");
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Adding ac_adapter device [%02x].\n", device_handle));
if (!context || *context) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid (NULL) 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 AC_CONTEXT structure.
*/
ac_adapter = acpi_os_callocate(sizeof(AC_CONTEXT));
if (!ac_adapter) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
ac_adapter->device_handle = device->handle;
ac_adapter->acpi_handle = device->acpi_handle;
/*
* Get information on this object.
*/
status = acpi_get_object_info(ac_adapter->acpi_handle, &info);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unable to get object info for ac_adapter device."));
goto end;
}
/*
* _UID?
* -----
*/
if (info.valid & ACPI_VALID_UID) {
strncpy(ac_adapter->uid, info.unique_id, sizeof(info.unique_id));
}
else {
strncpy(ac_adapter->uid, "0", sizeof("0"));
}
/*
* _STA?
* -----
*/
if (!(info.valid & ACPI_VALID_STA)) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Must have valid _STA.\n"));
status = AE_ERROR;
goto end;
}
status = ac_osl_add_device(ac_adapter);
if (ACPI_FAILURE(status)) {
goto end;
}
*context = ac_adapter;
ac_print(ac_adapter);
end:
if (ACPI_FAILURE(status)) {
acpi_os_free(ac_adapter);
}
return_ACPI_STATUS(status);
}
/****************************************************************************
*
* FUNCTION: ac_remove_device
*
* PARAMETERS:
*
* RETURN:
*
* DESCRIPTION:
*
****************************************************************************/
acpi_status
ac_remove_device (
void **context)
{
acpi_status status = AE_OK;
AC_CONTEXT *ac_adapter = NULL;
FUNCTION_TRACE("ac_remove_device");
if (!context || !*context) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
ac_adapter = (AC_CONTEXT*)*context;
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Removing ac_adapter device [%02x].\n", ac_adapter->device_handle));
ac_osl_remove_device(ac_adapter);
acpi_os_free(ac_adapter);
*context = NULL;
return_ACPI_STATUS(status);
}
/****************************************************************************
* External Functions
****************************************************************************/
/****************************************************************************
*
* FUNCTION: ac_initialize
*
* PARAMETERS: <none>
*
* RETURN:
*
* DESCRIPTION:
*
****************************************************************************/
acpi_status
ac_initialize (void)
{
acpi_status status = AE_OK;
BM_DEVICE_ID criteria;
BM_DRIVER driver;
FUNCTION_TRACE("ac_initialize");
MEMSET(&criteria, 0, sizeof(BM_DEVICE_ID));
MEMSET(&driver, 0, sizeof(BM_DRIVER));
driver.notify = &ac_notify;
driver.request = &ac_request;
/*
* Register driver for AC Adapter devices.
*/
MEMCPY(criteria.hid, AC_HID_AC_ADAPTER, sizeof(AC_HID_AC_ADAPTER));
status = bm_register_driver(&criteria, &driver);
return_ACPI_STATUS(status);
}
/****************************************************************************
*
* FUNCTION: ac_terminate
*
* PARAMETERS: <none>
*
* RETURN:
*
* DESCRIPTION:
*
****************************************************************************/
acpi_status
ac_terminate (void)
{
acpi_status status = AE_OK;
BM_DEVICE_ID criteria;
BM_DRIVER driver;
FUNCTION_TRACE("ac_terminate");
MEMSET(&criteria, 0, sizeof(BM_DEVICE_ID));
MEMSET(&driver, 0, sizeof(BM_DRIVER));
/*
* Unregister driver for AC Adapter devices.
*/
MEMCPY(criteria.hid, AC_HID_AC_ADAPTER, sizeof(AC_HID_AC_ADAPTER));
driver.notify = &ac_notify;
driver.request = &ac_request;
status = bm_unregister_driver(&criteria, &driver);
return_ACPI_STATUS(status);
}
/*****************************************************************************
*
* FUNCTION: ac_notify
*
* PARAMETERS: <none>
*
* RETURN:
*
* DESCRIPTION:
*
****************************************************************************/
acpi_status
ac_notify (
BM_NOTIFY notify_type,
BM_HANDLE device_handle,
void **context)
{
acpi_status status = AE_OK;
FUNCTION_TRACE("ac_notify");
if (!context) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
switch (notify_type) {
case BM_NOTIFY_DEVICE_ADDED:
status = ac_add_device(device_handle, context);
break;
case BM_NOTIFY_DEVICE_REMOVED:
status = ac_remove_device(context);
break;
case AC_NOTIFY_STATUS_CHANGE:
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Status change event detected.\n"));
status = ac_osl_generate_event(notify_type,
((AC_CONTEXT*)*context));
break;
default:
status = AE_SUPPORT;
break;
}
return_ACPI_STATUS(status);
}
/****************************************************************************
*
* FUNCTION: ac_request
*
* PARAMETERS:
*
* RETURN:
*
* DESCRIPTION:
*
****************************************************************************/
acpi_status
ac_request (
BM_REQUEST *request,
void *context)
{
acpi_status status = AE_OK;
FUNCTION_TRACE("ac_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);
}
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