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/*
* $Id$
*
* Copyright (C) 2005 Mike Isely <isely@pobox.com>
*
* 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
*
* 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
*
*/
#ifndef __PVRUSB2_BASE_H
#define __PVRUSB2_BASE_H
#include <linux/mutex.h>
#include <linux/usb.h>
#include <linux/workqueue.h>
struct pvr2_hdw; /* hardware interface - defined elsewhere */
struct pvr2_stream; /* stream interface - defined elsewhere */
struct pvr2_context; /* All central state */
struct pvr2_channel; /* One I/O pathway to a user */
struct pvr2_context_stream; /* Wrapper for a stream */
struct pvr2_crit_reg; /* Critical region pointer */
struct pvr2_ioread; /* Low level stream structure */
struct pvr2_context_stream {
struct pvr2_channel *user;
struct pvr2_stream *stream;
};
struct pvr2_context {
struct pvr2_channel *mc_first;
struct pvr2_channel *mc_last;
struct pvr2_hdw *hdw;
struct pvr2_context_stream video_stream;
struct mutex mutex;
int disconnect_flag;
/* Called after pvr2_context initialization is complete */
void (*setup_func)(struct pvr2_context *);
/* Work queue overhead for out-of-line processing */
struct workqueue_struct *workqueue;
struct work_struct workinit;
struct work_struct workpoll;
};
struct pvr2_channel {
struct pvr2_context *mc_head;
struct pvr2_channel *mc_next;
struct pvr2_channel *mc_prev;
struct pvr2_context_stream *stream;
struct pvr2_hdw *hdw;
void (*check_func)(struct pvr2_channel *);
};
void pvr2_context_enter(struct pvr2_context *);
void pvr2_context_exit(struct pvr2_context *);
struct pvr2_context *pvr2_context_create(struct usb_interface *intf,
const struct usb_device_id *devid,
void (*setup_func)(struct pvr2_context *));
void pvr2_context_disconnect(struct pvr2_context *);
void pvr2_channel_init(struct pvr2_channel *,struct pvr2_context *);
void pvr2_channel_done(struct pvr2_channel *);
int pvr2_channel_claim_stream(struct pvr2_channel *,
struct pvr2_context_stream *);
struct pvr2_ioread *pvr2_channel_create_mpeg_stream(
struct pvr2_context_stream *);
#endif /* __PVRUSB2_CONTEXT_H */
/*
Stuff for Emacs to see, in order to encourage consistent editing style:
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*** mode: c ***
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*** End: ***
*/
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