reactos/drivers/bus/acpi/busmgr/button.c

324 lines
7.8 KiB
C

/*
* acpi_button.c - ACPI Button Driver ($Revision: 29 $)
*
* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.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 <precomp.h>
#define NDEBUG
#include <debug.h>
#define _COMPONENT ACPI_BUTTON_COMPONENT
ACPI_MODULE_NAME ("acpi_button")
static int acpi_button_add (struct acpi_device *device);
static int acpi_button_remove (struct acpi_device *device, int type);
static struct acpi_driver acpi_button_driver = {
{0,0},
ACPI_BUTTON_DRIVER_NAME,
ACPI_BUTTON_CLASS,
0,
0,
"ACPI_FPB,ACPI_FSB,PNP0C0D,PNP0C0C,PNP0C0E",
{acpi_button_add,acpi_button_remove}
};
struct acpi_button {
ACPI_HANDLE handle;
struct acpi_device *device; /* Fixed button kludge */
UINT8 type;
unsigned long pushed;
};
struct acpi_device *power_button;
struct acpi_device *sleep_button;
struct acpi_device *lid_button;
/* --------------------------------------------------------------------------
Driver Interface
-------------------------------------------------------------------------- */
void
acpi_button_notify (
ACPI_HANDLE handle,
UINT32 event,
void *data)
{
struct acpi_button *button = (struct acpi_button *) data;
ACPI_FUNCTION_TRACE("acpi_button_notify");
if (!button || !button->device)
return_VOID;
switch (event) {
case ACPI_BUTTON_NOTIFY_STATUS:
acpi_bus_generate_event(button->device, event, ++button->pushed);
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
break;
}
return_VOID;
}
ACPI_STATUS
acpi_button_notify_fixed (
void *data)
{
struct acpi_button *button = (struct acpi_button *) data;
ACPI_FUNCTION_TRACE("acpi_button_notify_fixed");
if (!button)
return_ACPI_STATUS(AE_BAD_PARAMETER);
acpi_button_notify(button->handle, ACPI_BUTTON_NOTIFY_STATUS, button);
return_ACPI_STATUS(AE_OK);
}
static int
acpi_button_add (
struct acpi_device *device)
{
int result = 0;
ACPI_STATUS status = AE_OK;
struct acpi_button *button = NULL;
ACPI_FUNCTION_TRACE("acpi_button_add");
if (!device)
return_VALUE(-1);
button = ExAllocatePoolWithTag(NonPagedPool,sizeof(struct acpi_button), 'IPCA');
if (!button)
return_VALUE(-4);
memset(button, 0, sizeof(struct acpi_button));
button->device = device;
button->handle = device->handle;
acpi_driver_data(device) = button;
/*
* Determine the button type (via hid), as fixed-feature buttons
* need to be handled a bit differently than generic-space.
*/
if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWER)) {
button->type = ACPI_BUTTON_TYPE_POWER;
sprintf(acpi_device_name(device), "%s",
ACPI_BUTTON_DEVICE_NAME_POWER);
sprintf(acpi_device_class(device), "%s/%s",
ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER);
}
else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWERF)) {
button->type = ACPI_BUTTON_TYPE_POWERF;
sprintf(acpi_device_name(device), "%s",
ACPI_BUTTON_DEVICE_NAME_POWERF);
sprintf(acpi_device_class(device), "%s/%s",
ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER);
}
else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEP)) {
button->type = ACPI_BUTTON_TYPE_SLEEP;
sprintf(acpi_device_name(device), "%s",
ACPI_BUTTON_DEVICE_NAME_SLEEP);
sprintf(acpi_device_class(device), "%s/%s",
ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP);
}
else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEPF)) {
button->type = ACPI_BUTTON_TYPE_SLEEPF;
sprintf(acpi_device_name(device), "%s",
ACPI_BUTTON_DEVICE_NAME_SLEEPF);
sprintf(acpi_device_class(device), "%s/%s",
ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP);
}
else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_LID)) {
button->type = ACPI_BUTTON_TYPE_LID;
sprintf(acpi_device_name(device), "%s",
ACPI_BUTTON_DEVICE_NAME_LID);
sprintf(acpi_device_class(device), "%s/%s",
ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID);
}
else {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unsupported hid [%s]\n",
acpi_device_hid(device)));
result = -15;
goto end;
}
/*
* Ensure only one button of each type is used.
*/
switch (button->type) {
case ACPI_BUTTON_TYPE_POWER:
case ACPI_BUTTON_TYPE_POWERF:
if (!power_button)
power_button = device;
else {
ExFreePoolWithTag(button, 'IPCA');
return_VALUE(-15);
}
break;
case ACPI_BUTTON_TYPE_SLEEP:
case ACPI_BUTTON_TYPE_SLEEPF:
if (!sleep_button)
sleep_button = device;
else {
ExFreePoolWithTag(button, 'IPCA');
return_VALUE(-15);
}
break;
case ACPI_BUTTON_TYPE_LID:
if (!lid_button)
lid_button = device;
else {
ExFreePoolWithTag(button, 'IPCA');
return_VALUE(-15);
}
break;
}
switch (button->type) {
case ACPI_BUTTON_TYPE_POWERF:
status = AcpiInstallFixedEventHandler (
ACPI_EVENT_POWER_BUTTON,
acpi_button_notify_fixed,
button);
break;
case ACPI_BUTTON_TYPE_SLEEPF:
status = AcpiInstallFixedEventHandler (
ACPI_EVENT_SLEEP_BUTTON,
acpi_button_notify_fixed,
button);
break;
case ACPI_BUTTON_TYPE_LID:
status = AcpiInstallFixedEventHandler (
ACPI_BUTTON_TYPE_LID,
acpi_button_notify_fixed,
button);
break;
default:
status = AcpiInstallNotifyHandler (
button->handle,
ACPI_DEVICE_NOTIFY,
acpi_button_notify,
button);
break;
}
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error installing notify handler\n"));
result = -15;
goto end;
}
DPRINT("%s [%s]\n",
acpi_device_name(device), acpi_device_bid(device));
end:
if (result) {
ExFreePoolWithTag(button, 'IPCA');
}
return_VALUE(result);
}
static int
acpi_button_remove (struct acpi_device *device, int type)
{
ACPI_STATUS status = 0;
struct acpi_button *button = NULL;
ACPI_FUNCTION_TRACE("acpi_button_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-1);
button = acpi_driver_data(device);
/* Unregister for device notifications. */
switch (button->type) {
case ACPI_BUTTON_TYPE_POWERF:
status = AcpiRemoveFixedEventHandler(
ACPI_EVENT_POWER_BUTTON, acpi_button_notify_fixed);
break;
case ACPI_BUTTON_TYPE_SLEEPF:
status = AcpiRemoveFixedEventHandler(
ACPI_EVENT_SLEEP_BUTTON, acpi_button_notify_fixed);
break;
case ACPI_BUTTON_TYPE_LID:
status = AcpiRemoveFixedEventHandler(
ACPI_BUTTON_TYPE_LID, acpi_button_notify_fixed);
break;
default:
status = AcpiRemoveNotifyHandler(button->handle,
ACPI_DEVICE_NOTIFY, acpi_button_notify);
break;
}
if (ACPI_FAILURE(status))
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error removing notify handler\n"));
ExFreePoolWithTag(button, 'IPCA');
return_VALUE(0);
}
int
acpi_button_init (void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_button_init");
result = acpi_bus_register_driver(&acpi_button_driver);
if (result < 0) {
return_VALUE(-15);
}
return_VALUE(0);
}
void
acpi_button_exit (void)
{
ACPI_FUNCTION_TRACE("acpi_button_exit");
acpi_bus_unregister_driver(&acpi_button_driver);
return_VOID;
}