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https://github.com/reactos/reactos.git
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324 lines
7.8 KiB
C
324 lines
7.8 KiB
C
/*
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* acpi_button.c - ACPI Button Driver ($Revision: 29 $)
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*
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* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
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* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#include <precomp.h>
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#define NDEBUG
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#include <debug.h>
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#define _COMPONENT ACPI_BUTTON_COMPONENT
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ACPI_MODULE_NAME ("acpi_button")
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static int acpi_button_add (struct acpi_device *device);
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static int acpi_button_remove (struct acpi_device *device, int type);
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static struct acpi_driver acpi_button_driver = {
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{0,0},
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ACPI_BUTTON_DRIVER_NAME,
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ACPI_BUTTON_CLASS,
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0,
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0,
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"ACPI_FPB,ACPI_FSB,PNP0C0D,PNP0C0C,PNP0C0E",
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{acpi_button_add,acpi_button_remove}
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};
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struct acpi_button {
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ACPI_HANDLE handle;
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struct acpi_device *device; /* Fixed button kludge */
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UINT8 type;
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unsigned long pushed;
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};
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struct acpi_device *power_button;
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struct acpi_device *sleep_button;
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struct acpi_device *lid_button;
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/* --------------------------------------------------------------------------
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Driver Interface
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-------------------------------------------------------------------------- */
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void
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acpi_button_notify (
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ACPI_HANDLE handle,
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UINT32 event,
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void *data)
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{
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struct acpi_button *button = (struct acpi_button *) data;
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ACPI_FUNCTION_TRACE("acpi_button_notify");
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if (!button || !button->device)
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return_VOID;
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switch (event) {
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case ACPI_BUTTON_NOTIFY_STATUS:
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acpi_bus_generate_event(button->device, event, ++button->pushed);
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break;
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default:
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ACPI_DEBUG_PRINT((ACPI_DB_INFO,
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"Unsupported event [0x%x]\n", event));
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break;
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}
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return_VOID;
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}
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ACPI_STATUS
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acpi_button_notify_fixed (
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void *data)
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{
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struct acpi_button *button = (struct acpi_button *) data;
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ACPI_FUNCTION_TRACE("acpi_button_notify_fixed");
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if (!button)
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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acpi_button_notify(button->handle, ACPI_BUTTON_NOTIFY_STATUS, button);
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return_ACPI_STATUS(AE_OK);
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}
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static int
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acpi_button_add (
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struct acpi_device *device)
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{
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int result = 0;
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ACPI_STATUS status = AE_OK;
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struct acpi_button *button = NULL;
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ACPI_FUNCTION_TRACE("acpi_button_add");
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if (!device)
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return_VALUE(-1);
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button = ExAllocatePoolWithTag(NonPagedPool,sizeof(struct acpi_button), 'IPCA');
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if (!button)
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return_VALUE(-4);
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memset(button, 0, sizeof(struct acpi_button));
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button->device = device;
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button->handle = device->handle;
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acpi_driver_data(device) = button;
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/*
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* Determine the button type (via hid), as fixed-feature buttons
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* need to be handled a bit differently than generic-space.
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*/
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if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWER)) {
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button->type = ACPI_BUTTON_TYPE_POWER;
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sprintf(acpi_device_name(device), "%s",
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ACPI_BUTTON_DEVICE_NAME_POWER);
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sprintf(acpi_device_class(device), "%s/%s",
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ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER);
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}
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else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWERF)) {
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button->type = ACPI_BUTTON_TYPE_POWERF;
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sprintf(acpi_device_name(device), "%s",
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ACPI_BUTTON_DEVICE_NAME_POWERF);
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sprintf(acpi_device_class(device), "%s/%s",
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ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER);
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}
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else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEP)) {
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button->type = ACPI_BUTTON_TYPE_SLEEP;
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sprintf(acpi_device_name(device), "%s",
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ACPI_BUTTON_DEVICE_NAME_SLEEP);
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sprintf(acpi_device_class(device), "%s/%s",
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ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP);
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}
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else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEPF)) {
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button->type = ACPI_BUTTON_TYPE_SLEEPF;
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sprintf(acpi_device_name(device), "%s",
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ACPI_BUTTON_DEVICE_NAME_SLEEPF);
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sprintf(acpi_device_class(device), "%s/%s",
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ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP);
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}
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else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_LID)) {
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button->type = ACPI_BUTTON_TYPE_LID;
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sprintf(acpi_device_name(device), "%s",
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ACPI_BUTTON_DEVICE_NAME_LID);
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sprintf(acpi_device_class(device), "%s/%s",
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ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID);
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}
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else {
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ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unsupported hid [%s]\n",
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acpi_device_hid(device)));
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result = -15;
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goto end;
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}
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/*
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* Ensure only one button of each type is used.
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*/
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switch (button->type) {
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case ACPI_BUTTON_TYPE_POWER:
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case ACPI_BUTTON_TYPE_POWERF:
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if (!power_button)
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power_button = device;
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else {
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ExFreePoolWithTag(button, 'IPCA');
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return_VALUE(-15);
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}
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break;
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case ACPI_BUTTON_TYPE_SLEEP:
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case ACPI_BUTTON_TYPE_SLEEPF:
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if (!sleep_button)
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sleep_button = device;
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else {
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ExFreePoolWithTag(button, 'IPCA');
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return_VALUE(-15);
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}
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break;
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case ACPI_BUTTON_TYPE_LID:
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if (!lid_button)
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lid_button = device;
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else {
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ExFreePoolWithTag(button, 'IPCA');
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return_VALUE(-15);
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}
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break;
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}
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switch (button->type) {
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case ACPI_BUTTON_TYPE_POWERF:
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status = AcpiInstallFixedEventHandler (
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ACPI_EVENT_POWER_BUTTON,
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acpi_button_notify_fixed,
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button);
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break;
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case ACPI_BUTTON_TYPE_SLEEPF:
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status = AcpiInstallFixedEventHandler (
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ACPI_EVENT_SLEEP_BUTTON,
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acpi_button_notify_fixed,
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button);
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break;
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case ACPI_BUTTON_TYPE_LID:
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status = AcpiInstallFixedEventHandler (
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ACPI_BUTTON_TYPE_LID,
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acpi_button_notify_fixed,
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button);
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break;
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default:
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status = AcpiInstallNotifyHandler (
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button->handle,
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ACPI_DEVICE_NOTIFY,
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acpi_button_notify,
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button);
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break;
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}
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if (ACPI_FAILURE(status)) {
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ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
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"Error installing notify handler\n"));
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result = -15;
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goto end;
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}
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DPRINT("%s [%s]\n",
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acpi_device_name(device), acpi_device_bid(device));
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end:
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if (result) {
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ExFreePoolWithTag(button, 'IPCA');
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}
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return_VALUE(result);
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}
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static int
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acpi_button_remove (struct acpi_device *device, int type)
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{
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ACPI_STATUS status = 0;
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struct acpi_button *button = NULL;
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ACPI_FUNCTION_TRACE("acpi_button_remove");
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if (!device || !acpi_driver_data(device))
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return_VALUE(-1);
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button = acpi_driver_data(device);
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/* Unregister for device notifications. */
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switch (button->type) {
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case ACPI_BUTTON_TYPE_POWERF:
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status = AcpiRemoveFixedEventHandler(
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ACPI_EVENT_POWER_BUTTON, acpi_button_notify_fixed);
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break;
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case ACPI_BUTTON_TYPE_SLEEPF:
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status = AcpiRemoveFixedEventHandler(
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ACPI_EVENT_SLEEP_BUTTON, acpi_button_notify_fixed);
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break;
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case ACPI_BUTTON_TYPE_LID:
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status = AcpiRemoveFixedEventHandler(
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ACPI_BUTTON_TYPE_LID, acpi_button_notify_fixed);
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break;
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default:
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status = AcpiRemoveNotifyHandler(button->handle,
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ACPI_DEVICE_NOTIFY, acpi_button_notify);
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break;
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}
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if (ACPI_FAILURE(status))
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ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
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"Error removing notify handler\n"));
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ExFreePoolWithTag(button, 'IPCA');
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return_VALUE(0);
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}
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int
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acpi_button_init (void)
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{
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int result = 0;
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ACPI_FUNCTION_TRACE("acpi_button_init");
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result = acpi_bus_register_driver(&acpi_button_driver);
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if (result < 0) {
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return_VALUE(-15);
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}
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return_VALUE(0);
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}
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void
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acpi_button_exit (void)
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{
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ACPI_FUNCTION_TRACE("acpi_button_exit");
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acpi_bus_unregister_driver(&acpi_button_driver);
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return_VOID;
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}
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