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/*
* 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
*
* Copyright (c) 2008 Andy Green <andy@openmoko.com>
*/
#include <linux/kernel.h>
#include <linux/device.h>
#include "ts_filter.h"
static DEFINE_MUTEX(chain_mutex);
int ts_filter_create_chain(struct platform_device *pdev,
struct ts_filter_api **api, void **config,
struct ts_filter **arr, int count_coords)
{
int count = 0;
struct ts_filter *last = NULL;
if (!api)
return 0;
mutex_lock(&chain_mutex);
while (*api) {
*arr = ((*api)->create)(pdev, *config++, count_coords);
if (!*arr) {
printk(KERN_ERR "Filter %d failed init\n", count);
return count;
}
(*arr)->api = *api++;
if (last)
last->next = *arr;
last = *arr;
arr++;
count++;
}
mutex_unlock(&chain_mutex);
return count;
}
EXPORT_SYMBOL_GPL(ts_filter_create_chain);
void ts_filter_destroy_chain(struct platform_device *pdev,
struct ts_filter **arr)
{
struct ts_filter **first = arr;
mutex_lock(&chain_mutex);
while (*arr) {
((*arr)->api->destroy)(pdev, *arr);
arr++;
}
*first = NULL;
mutex_unlock(&chain_mutex);
}
EXPORT_SYMBOL_GPL(ts_filter_destroy_chain);
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