device.h

/*
 * Analogy for Linux, device related features
 *
 * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
 * Copyright (C) 2008 Alexis Berlemont <alexis.berlemont@free.fr>
 *
 * Xenomai 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.
 *
 * Xenomai 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 Xenomai; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
#ifndef _COBALT_RTDM_ANALOGY_DEVICE_H
#define _COBALT_RTDM_ANALOGY_DEVICE_H
 
#include <rtdm/analogy/rtdm_helpers.h>
#include <rtdm/analogy/transfer.h>
#include <rtdm/analogy/driver.h>
 
#define A4L_NB_DEVICES 10
 
#define A4L_DEV_ATTACHED_NR 0
 
struct a4l_device {
 
        /* Spinlock for global device use */
        rtdm_lock_t lock;
 
        /* Device specific flags */
        unsigned long flags;
 
        /* Driver assigned to this device thanks to attaching
           procedure */
        struct a4l_driver *driver;
 
        /* Hidden description stuff */
        struct list_head subdvsq;
 
        /* Context-dependent stuff */
        struct a4l_transfer transfer;
 
        /* Private data useful for drivers functioning */
        void *priv;
};
 
/* --- Devices tab related functions --- */
void a4l_init_devs(void);
int a4l_check_cleanup_devs(void);
int a4l_rdproc_devs(struct seq_file *p, void *data);
 
/* --- Context related function / macro --- */
void a4l_set_dev(struct a4l_device_context *cxt);
#define a4l_get_dev(x) ((x)->dev)
 
/* --- Upper layer functions --- */
int a4l_ioctl_devcfg(struct a4l_device_context * cxt, void *arg);
int a4l_ioctl_devinfo(struct a4l_device_context * cxt, void *arg);
 
#endif /* !_COBALT_RTDM_ANALOGY_DEVICE_H */