patch-2.4.6 linux/drivers/acpi/ospm/button/bn.c
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- Lines: 440
- Date:
Wed Jun 20 17:47:40 2001
- Orig file:
v2.4.5/linux/drivers/acpi/ospm/button/bn.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/ospm/button/bn.c linux/drivers/acpi/ospm/button/bn.c
@@ -0,0 +1,439 @@
+/*****************************************************************************
+ *
+ * Module Name: bn.c
+ * $Revision: 22 $
+ *
+ *****************************************************************************/
+
+/*
+ * 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 Plxxe, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+#include <acpi.h>
+#include "bn.h"
+
+
+#define _COMPONENT ACPI_BUTTON
+ MODULE_NAME ("bn")
+
+
+/*****************************************************************************
+ * Internal Functions
+ *****************************************************************************/
+
+/*****************************************************************************
+ *
+ * FUNCTION: bn_print
+ *
+ * PARAMETERS:
+ *
+ * RETURN:
+ *
+ * DESCRIPTION: Prints out information on a specific button.
+ *
+ ****************************************************************************/
+
+void
+bn_print (
+ BN_CONTEXT *button)
+{
+
+ return;
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION: bn_add_device
+ *
+ * PARAMETERS:
+ *
+ * RETURN:
+ *
+ * DESCRIPTION:
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+bn_add_device(
+ BM_HANDLE device_handle,
+ void **context)
+{
+ ACPI_STATUS status = AE_OK;
+ BM_DEVICE *device = NULL;
+ BN_CONTEXT *button = NULL;
+
+ if (!context || *context) {
+ return(AE_BAD_PARAMETER);
+ }
+
+ /*
+ * Get information on this device.
+ */
+ status = bm_get_device_info( device_handle, &device );
+ if (ACPI_FAILURE(status)) {
+ return(status);
+ }
+
+ /*
+ * Allocate a new BN_CONTEXT structure.
+ */
+ button = acpi_os_callocate(sizeof(BN_CONTEXT));
+ if (!button) {
+ return(AE_NO_MEMORY);
+ }
+
+ button->device_handle = device->handle;
+ button->acpi_handle = device->acpi_handle;
+
+ /*
+ * Power Button?
+ * -------------
+ * Either fixed-feature or generic (namespace) types.
+ */
+ if (strncmp(device->id.hid, BN_HID_POWER_BUTTON,
+ sizeof(BM_DEVICE_HID)) == 0) {
+
+ if (device->id.type == BM_TYPE_FIXED_BUTTON) {
+
+ button->type = BN_TYPE_POWER_BUTTON_FIXED;
+
+ /* Register for fixed-feature events. */
+ status = acpi_install_fixed_event_handler(
+ ACPI_EVENT_POWER_BUTTON, bn_notify_fixed,
+ (void*)button);
+ }
+ else {
+ button->type = BN_TYPE_POWER_BUTTON;
+ }
+
+ }
+
+ /*
+ * Sleep Button?
+ * -------------
+ * Either fixed-feature or generic (namespace) types.
+ */
+ else if (strncmp( device->id.hid, BN_HID_SLEEP_BUTTON,
+ sizeof(BM_DEVICE_HID)) == 0) {
+
+ if (device->id.type == BM_TYPE_FIXED_BUTTON) {
+
+ button->type = BN_TYPE_SLEEP_BUTTON_FIXED;
+
+ /* Register for fixed-feature events. */
+ status = acpi_install_fixed_event_handler(
+ ACPI_EVENT_SLEEP_BUTTON, bn_notify_fixed,
+ (void*)button);
+ }
+ else {
+ button->type = BN_TYPE_SLEEP_BUTTON;
+ }
+ }
+
+ /*
+ * LID Switch?
+ * -----------
+ */
+ else if (strncmp( device->id.hid, BN_HID_LID_SWITCH,
+ sizeof(BM_DEVICE_HID)) == 0) {
+ button->type = BN_TYPE_LID_SWITCH;
+ }
+
+ status = bn_osl_add_device(button);
+ if (ACPI_FAILURE(status)) {
+ goto end;
+ }
+
+ *context = button;
+
+ bn_print(button);
+
+end:
+ if (ACPI_FAILURE(status)) {
+ acpi_os_free(button);
+ }
+
+ return(status);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION: bn_remove_device
+ *
+ * PARAMETERS:
+ *
+ * RETURN:
+ *
+ * DESCRIPTION:
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+bn_remove_device(
+ void **context)
+{
+ ACPI_STATUS status = AE_OK;
+ BN_CONTEXT *button = NULL;
+
+ if (!context || !*context) {
+ return(AE_BAD_PARAMETER);
+ }
+
+ button = (BN_CONTEXT*)*context;
+
+ /*
+ * Unregister for fixed-feature events.
+ */
+ switch (button->type) {
+ case BN_TYPE_POWER_BUTTON_FIXED:
+ status = acpi_remove_fixed_event_handler(
+ ACPI_EVENT_POWER_BUTTON, bn_notify_fixed);
+ break;
+ case BN_TYPE_SLEEP_BUTTON_FIXED:
+ status = acpi_remove_fixed_event_handler(
+ ACPI_EVENT_SLEEP_BUTTON, bn_notify_fixed);
+ break;
+ }
+
+ bn_osl_remove_device(button);
+
+ acpi_os_free(button);
+
+ *context = NULL;
+
+ return(status);
+}
+
+
+/*****************************************************************************
+ * External Functions
+ *****************************************************************************/
+
+/*****************************************************************************
+ *
+ * FUNCTION: bn_initialize
+ *
+ * PARAMETERS: <none>
+ *
+ * RETURN:
+ *
+ * DESCRIPTION:
+ *
+
+ ****************************************************************************/
+
+ACPI_STATUS
+bn_initialize (void)
+{
+ BM_DEVICE_ID criteria;
+ BM_DRIVER driver;
+
+ MEMSET(&criteria, 0, sizeof(BM_DEVICE_ID));
+ MEMSET(&driver, 0, sizeof(BM_DRIVER));
+
+ driver.notify = &bn_notify;
+ driver.request = &bn_request;
+
+ /*
+ * Register for power buttons.
+ */
+ MEMCPY(criteria.hid, BN_HID_POWER_BUTTON, sizeof(BN_HID_POWER_BUTTON));
+ bm_register_driver(&criteria, &driver);
+
+ /*
+ * Register for sleep buttons.
+ */
+ MEMCPY(criteria.hid, BN_HID_SLEEP_BUTTON, sizeof(BN_HID_SLEEP_BUTTON));
+ bm_register_driver(&criteria, &driver);
+
+ /*
+ * Register for LID switches.
+ */
+ MEMCPY(criteria.hid, BN_HID_LID_SWITCH, sizeof(BN_HID_LID_SWITCH));
+ bm_register_driver(&criteria, &driver);
+
+ return(AE_OK);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION: bn_terminate
+ *
+ * PARAMETERS: <none>
+ *
+ * RETURN:
+ *
+ * DESCRIPTION:
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+bn_terminate (void)
+{
+ ACPI_STATUS status = AE_OK;
+ BM_DEVICE_ID criteria;
+ BM_DRIVER driver;
+
+ MEMSET(&criteria, 0, sizeof(BM_DEVICE_ID));
+ MEMSET(&driver, 0, sizeof(BM_DRIVER));
+
+ driver.notify = &bn_notify;
+ driver.request = &bn_request;
+
+ /*
+ * Unregister for power buttons.
+ */
+ MEMCPY(criteria.hid, BN_HID_POWER_BUTTON, sizeof(BN_HID_POWER_BUTTON));
+ status = bm_unregister_driver(&criteria, &driver);
+
+ /*
+ * Unregister for sleep buttons.
+ */
+ MEMCPY(criteria.hid, BN_HID_SLEEP_BUTTON, sizeof(BN_HID_SLEEP_BUTTON));
+ status = bm_unregister_driver(&criteria, &driver);
+
+ /*
+ * Unregister for LID switches.
+ */
+ MEMCPY(criteria.hid, BN_HID_LID_SWITCH, sizeof(BN_HID_LID_SWITCH));
+ status = bm_unregister_driver(&criteria, &driver);
+
+ return(status);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION: bn_notify_fixed
+ *
+ * PARAMETERS: <none>
+ *
+ * RETURN:
+ *
+ * DESCRIPTION:
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+bn_notify_fixed (
+ void *context)
+{
+ ACPI_STATUS status = AE_OK;
+
+ if (!context) {
+ return(AE_BAD_PARAMETER);
+ }
+
+ status = bn_osl_generate_event(BN_NOTIFY_STATUS_CHANGE,
+ ((BN_CONTEXT*)context));
+
+ return(status);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION: bn_notify
+ *
+ * PARAMETERS: <none>
+ *
+ * RETURN:
+ *
+ * DESCRIPTION:
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+bn_notify (
+ BM_NOTIFY notify_type,
+ BM_HANDLE device_handle,
+ void **context)
+{
+ ACPI_STATUS status = AE_OK;
+
+ if (!context) {
+ return(AE_BAD_PARAMETER);
+ }
+
+ switch (notify_type) {
+ case BM_NOTIFY_DEVICE_ADDED:
+ status = bn_add_device(device_handle, context);
+ break;
+
+ case BM_NOTIFY_DEVICE_REMOVED:
+ status = bn_remove_device(context);
+ break;
+
+ case BN_NOTIFY_STATUS_CHANGE:
+ status = bn_osl_generate_event(BN_NOTIFY_STATUS_CHANGE,
+ ((BN_CONTEXT*)*context));
+ break;
+
+ default:
+ status = AE_SUPPORT;
+ break;
+ }
+
+ return(status);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION: bn_request
+ *
+ * PARAMETERS:
+ *
+ * RETURN:
+ *
+ * DESCRIPTION:
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+bn_request (
+ BM_REQUEST *request,
+ void *context)
+{
+ ACPI_STATUS status = AE_OK;
+
+ /*
+ * Must have a valid request structure and context.
+ */
+ if (!request || !context) {
+ return(AE_BAD_PARAMETER);
+ }
+
+ /*
+ * Handle Request:
+ * ---------------
+ */
+ switch (request->command) {
+
+ default:
+ status = AE_SUPPORT;
+ break;
+ }
+
+ request->status = status;
+
+ return(status);
+}
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