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/* SPDX-License-Identifier: GPL-2.0-only */
/*
*
* Copyright (C) 2005 Mike Isely <isely@pobox.com>
*/
#ifndef __PVRUSB2_CONTEXT_H
#define __PVRUSB2_CONTEXT_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_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_context *exist_next;
struct pvr2_context *exist_prev;
struct pvr2_context *notify_next;
struct pvr2_context *notify_prev;
struct pvr2_hdw *hdw;
struct pvr2_context_stream video_stream;
struct mutex mutex;
int notify_flag;
int initialized_flag;
int disconnect_flag;
/* Called after pvr2_context initialization is complete */
void (*setup_func)(struct pvr2_context *);
};
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;
unsigned int input_mask;
void (*check_func)(struct pvr2_channel *);
};
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_limit_inputs(struct pvr2_channel *,unsigned int);
unsigned int pvr2_channel_get_limited_inputs(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 *);
int pvr2_context_global_init(void);
void pvr2_context_global_done(void);
#endif /* __PVRUSB2_CONTEXT_H */
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