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/*
* Copyright (C) 2007 STMicroelectronics
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __HSIDEV_H__
#define __HSIDEV_H__
#ifdef __KERNEL__
#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/wait.h>
#include <mach/debug.h>
#define MAX_CHANNELS_MONITORED 4
#define DRIVER_NAME "HSI LOOPBACK"
/* enables/disables debug msgs */
#define DRIVER_DEBUG 0
/* msg header represents this module */
#define DRIVER_DEBUG_PFX DRIVER_NAME
#define DRIVER_DBG KERN_ERR
/** struct hsidev_data - HSI loopback slave device
* @devt - Device major and minor number for each channel
* @hsidev_lock - Lock protecting the channel from simultaneous
* operations.
* @wq - Wait queue for processed to sleep for event arrival
* @hsi - Slave hsi device representing the channel
* @device_entry - To enable insertion into loopback list
* @xfer - Structure representing each transfer
* @users - Number of users currently
* @xfer_done - Flag to indicate trnasfer completion
**/
struct hsidev_data {
dev_t devt;
struct mutex hsidev_lock;
wait_queue_head_t wq;
struct hsi_device *hsi;
struct list_head device_entry;
struct hsi_data *xfer;
unsigned users;
int xfer_done;
};
#endif
#endif /* __HSIDEV_H__ */
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