/* 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 */