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/*
* deviced
*
* Copyright (c) 2012 - 2013 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include "devices.h"
#include "log.h"
static dd_list *dev_head;
void add_device(const struct device_ops *dev)
{
DD_LIST_APPEND(dev_head, (struct device_ops*)dev);
}
void remove_device(const struct device_ops *dev)
{
DD_LIST_REMOVE(dev_head, (struct device_ops*)dev);
}
const struct device_ops *find_device(int type)
{
dd_list *elem;
const struct device_ops *dev;
DD_LIST_FOREACH(dev_head, elem, dev) {
if (dev->type == type)
return dev;
}
return NULL;
}
void devices_init(void)
{
dd_list *elem;
const struct device_ops *dev;
DD_LIST_FOREACH(dev_head, elem, dev) {
_D("[%s] initialize", dev->name);
if (dev->init)
dev->init();
}
}
void devices_exit(void)
{
dd_list *elem;
const struct device_ops *dev;
DD_LIST_FOREACH(dev_head, elem, dev) {
_D("[%s] deinitialize", dev->name);
if (dev->exit)
dev->exit();
}
}
int devices_play(int pattern)
{
dd_list *elem;
const struct device_ops *dev;
int ret, prev = -EPERM;
DD_LIST_FOREACH(dev_head, elem, dev) {
if (dev->play) {
ret = dev->play(pattern);
if ((prev < 0 && ret == 0) ||
(prev == 0 && ret < 0))
prev = 0;
else if ((prev < 0 && ret == -ENOTSUP) ||
(prev == -ENOTSUP && ret < 0))
prev = -ENOTSUP;
else
prev = ret;
}
}
return prev;
}
int devices_stop(void)
{
dd_list *elem;
const struct device_ops *dev;
int ret = -ENOTSUP;
DD_LIST_FOREACH(dev_head, elem, dev) {
if (dev->stop)
ret = dev->stop();
}
return ret;
}
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