patch-2.4.6 linux/drivers/acpi/ospm/ac_adapter/ac.c

• Lines: 349
• Date: Wed Jun 20 17:47:40 2001
• Orig file: v2.4.5/linux/drivers/acpi/ospm/ac_adapter/ac.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/ospm/ac_adapter/ac.c linux/drivers/acpi/ospm/ac_adapter/ac.c
@@ -0,0 +1,348 @@
+/*****************************************************************************
+ *
+ * Module Name: ac.c
+ *   $Revision: 19 $
+ *
+ *****************************************************************************/
+
+/*
+ *  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)
+{
+
+	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;
+
+	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 AC_CONTEXT structure.
+	 */
+	ac_adapter = acpi_os_callocate(sizeof(AC_CONTEXT));
+	if (!ac_adapter) {
+		return(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)) {
+		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)) {
+		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(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;
+
+	if (!context || !*context) {
+		return(AE_BAD_PARAMETER);
+	}
+
+	ac_adapter = (AC_CONTEXT*)*context;
+
+	ac_osl_remove_device(ac_adapter);
+
+	acpi_os_free(ac_adapter);
+
+	*context = NULL;
+
+	return(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;
+
+	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(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;
+
+	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(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;
+
+	if (!context) {
+		return(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:
+		status = ac_osl_generate_event(notify_type,
+			((AC_CONTEXT*)*context));
+		break;
+
+	default:
+		status = AE_SUPPORT;
+		break;
+	}
+
+	return(status);
+}
+
+
+/****************************************************************************
+ *
+ * FUNCTION:	ac_request
+ *
+ * PARAMETERS:	
+ *
+ * RETURN:	
+ *
+ * DESCRIPTION:
+ *
+ ****************************************************************************/
+
+ACPI_STATUS
+ac_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);
+}