patch-2.4.6 linux/drivers/acpi/ospm/button/bn.c

• 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);
+}