1/* 2 * $Id: pvrusb2-context.h,v 1.1.1.1 2007/08/03 18:52:41 Exp $ 3 * 4 * Copyright (C) 2005 Mike Isely <isely@pobox.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18 * 19 */ 20#ifndef __PVRUSB2_BASE_H 21#define __PVRUSB2_BASE_H 22 23#include <linux/mutex.h> 24#include <linux/usb.h> 25#include <linux/workqueue.h> 26 27struct pvr2_hdw; /* hardware interface - defined elsewhere */ 28struct pvr2_stream; /* stream interface - defined elsewhere */ 29 30struct pvr2_context; /* All central state */ 31struct pvr2_channel; /* One I/O pathway to a user */ 32struct pvr2_context_stream; /* Wrapper for a stream */ 33struct pvr2_crit_reg; /* Critical region pointer */ 34struct pvr2_ioread; /* Low level stream structure */ 35 36struct pvr2_context_stream { 37 struct pvr2_channel *user; 38 struct pvr2_stream *stream; 39}; 40 41struct pvr2_context { 42 struct pvr2_channel *mc_first; 43 struct pvr2_channel *mc_last; 44 struct pvr2_hdw *hdw; 45 struct pvr2_context_stream video_stream; 46 struct mutex mutex; 47 int disconnect_flag; 48 49 /* Called after pvr2_context initialization is complete */ 50 void (*setup_func)(struct pvr2_context *); 51 52 /* Work queue overhead for out-of-line processing */ 53 struct workqueue_struct *workqueue; 54 struct work_struct workinit; 55 struct work_struct workpoll; 56}; 57 58struct pvr2_channel { 59 struct pvr2_context *mc_head; 60 struct pvr2_channel *mc_next; 61 struct pvr2_channel *mc_prev; 62 struct pvr2_context_stream *stream; 63 struct pvr2_hdw *hdw; 64 void (*check_func)(struct pvr2_channel *); 65}; 66 67void pvr2_context_enter(struct pvr2_context *); 68void pvr2_context_exit(struct pvr2_context *); 69 70struct pvr2_context *pvr2_context_create(struct usb_interface *intf, 71 const struct usb_device_id *devid, 72 void (*setup_func)(struct pvr2_context *)); 73void pvr2_context_disconnect(struct pvr2_context *); 74 75void pvr2_channel_init(struct pvr2_channel *,struct pvr2_context *); 76void pvr2_channel_done(struct pvr2_channel *); 77int pvr2_channel_claim_stream(struct pvr2_channel *, 78 struct pvr2_context_stream *); 79struct pvr2_ioread *pvr2_channel_create_mpeg_stream( 80 struct pvr2_context_stream *); 81 82 83#endif /* __PVRUSB2_CONTEXT_H */ 84/* 85 Stuff for Emacs to see, in order to encourage consistent editing style: 86 *** Local Variables: *** 87 *** mode: c *** 88 *** fill-column: 75 *** 89 *** tab-width: 8 *** 90 *** c-basic-offset: 8 *** 91 *** End: *** 92 */ 93