| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
|---|---|
| 2 | /* |
| 3 | * |
| 4 | * Copyright (C) 2005 Mike Isely <isely@pobox.com> |
| 5 | */ |
| 6 | #ifndef __PVRUSB2_CONTEXT_H |
| 7 | #define __PVRUSB2_CONTEXT_H |
| 8 | |
| 9 | #include <linux/mutex.h> |
| 10 | #include <linux/usb.h> |
| 11 | #include <linux/workqueue.h> |
| 12 | |
| 13 | struct pvr2_hdw; /* hardware interface - defined elsewhere */ |
| 14 | struct pvr2_stream; /* stream interface - defined elsewhere */ |
| 15 | |
| 16 | struct pvr2_context; /* All central state */ |
| 17 | struct pvr2_channel; /* One I/O pathway to a user */ |
| 18 | struct pvr2_context_stream; /* Wrapper for a stream */ |
| 19 | struct pvr2_ioread; /* Low level stream structure */ |
| 20 | |
| 21 | struct pvr2_context_stream { |
| 22 | struct pvr2_channel *user; |
| 23 | struct pvr2_stream *stream; |
| 24 | }; |
| 25 | |
| 26 | struct pvr2_context { |
| 27 | struct pvr2_channel *mc_first; |
| 28 | struct pvr2_channel *mc_last; |
| 29 | struct pvr2_context *exist_next; |
| 30 | struct pvr2_context *exist_prev; |
| 31 | struct pvr2_context *notify_next; |
| 32 | struct pvr2_context *notify_prev; |
| 33 | struct pvr2_hdw *hdw; |
| 34 | struct pvr2_context_stream video_stream; |
| 35 | struct mutex mutex; |
| 36 | int notify_flag; |
| 37 | int initialized_flag; |
| 38 | int disconnect_flag; |
| 39 | |
| 40 | /* Called after pvr2_context initialization is complete */ |
| 41 | void (*setup_func)(struct pvr2_context *); |
| 42 | |
| 43 | }; |
| 44 | |
| 45 | struct pvr2_channel { |
| 46 | struct pvr2_context *mc_head; |
| 47 | struct pvr2_channel *mc_next; |
| 48 | struct pvr2_channel *mc_prev; |
| 49 | struct pvr2_context_stream *stream; |
| 50 | struct pvr2_hdw *hdw; |
| 51 | unsigned int input_mask; |
| 52 | void (*check_func)(struct pvr2_channel *); |
| 53 | }; |
| 54 | |
| 55 | struct pvr2_context *pvr2_context_create(struct usb_interface *intf, |
| 56 | const struct usb_device_id *devid, |
| 57 | void (*setup_func)(struct pvr2_context *)); |
| 58 | void pvr2_context_disconnect(struct pvr2_context *); |
| 59 | |
| 60 | void pvr2_channel_init(struct pvr2_channel *,struct pvr2_context *); |
| 61 | void pvr2_channel_done(struct pvr2_channel *); |
| 62 | int pvr2_channel_limit_inputs(struct pvr2_channel *,unsigned int); |
| 63 | unsigned int pvr2_channel_get_limited_inputs(struct pvr2_channel *); |
| 64 | int pvr2_channel_claim_stream(struct pvr2_channel *, |
| 65 | struct pvr2_context_stream *); |
| 66 | struct pvr2_ioread *pvr2_channel_create_mpeg_stream( |
| 67 | struct pvr2_context_stream *); |
| 68 | |
| 69 | int pvr2_context_global_init(void); |
| 70 | void pvr2_context_global_done(void); |
| 71 | |
| 72 | #endif /* __PVRUSB2_CONTEXT_H */ |
| 73 |