/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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*
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* Copyright (C) 2005 Mike Isely <isely@pobox.com>
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*/
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#ifndef __PVRUSB2_CONTEXT_H
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#define __PVRUSB2_CONTEXT_H
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#include <linux/mutex.h>
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#include <linux/usb.h>
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#include <linux/workqueue.h>
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struct pvr2_hdw; /* hardware interface - defined elsewhere */
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struct pvr2_stream; /* stream interface - defined elsewhere */
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struct pvr2_context; /* All central state */
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struct pvr2_channel; /* One I/O pathway to a user */
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struct pvr2_context_stream; /* Wrapper for a stream */
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struct pvr2_ioread; /* Low level stream structure */
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struct pvr2_context_stream {
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struct pvr2_channel *user;
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struct pvr2_stream *stream;
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};
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struct pvr2_context {
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struct pvr2_channel *mc_first;
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struct pvr2_channel *mc_last;
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struct pvr2_context *exist_next;
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struct pvr2_context *exist_prev;
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struct pvr2_context *notify_next;
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struct pvr2_context *notify_prev;
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struct pvr2_hdw *hdw;
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struct pvr2_context_stream video_stream;
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struct mutex mutex;
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int notify_flag;
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int initialized_flag;
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int disconnect_flag;
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/* Called after pvr2_context initialization is complete */
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void (*setup_func)(struct pvr2_context *);
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};
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struct pvr2_channel {
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struct pvr2_context *mc_head;
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struct pvr2_channel *mc_next;
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struct pvr2_channel *mc_prev;
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struct pvr2_context_stream *stream;
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struct pvr2_hdw *hdw;
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unsigned int input_mask;
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void (*check_func)(struct pvr2_channel *);
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};
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struct pvr2_context *pvr2_context_create(struct usb_interface *intf,
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const struct usb_device_id *devid,
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void (*setup_func)(struct pvr2_context *));
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void pvr2_context_disconnect(struct pvr2_context *);
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void pvr2_channel_init(struct pvr2_channel *,struct pvr2_context *);
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void pvr2_channel_done(struct pvr2_channel *);
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int pvr2_channel_limit_inputs(struct pvr2_channel *,unsigned int);
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unsigned int pvr2_channel_get_limited_inputs(struct pvr2_channel *);
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int pvr2_channel_claim_stream(struct pvr2_channel *,
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struct pvr2_context_stream *);
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struct pvr2_ioread *pvr2_channel_create_mpeg_stream(
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struct pvr2_context_stream *);
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int pvr2_context_global_init(void);
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void pvr2_context_global_done(void);
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#endif /* __PVRUSB2_CONTEXT_H */
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