projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| d855497e MI |
1 | /* |
| 2 | * | |
| d855497e MI |
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_IO_H | |
| 21 | #define __PVRUSB2_IO_H | |
| 22 | ||
| 23 | #include <linux/usb.h> | |
| 24 | #include <linux/list.h> | |
| 25 | ||
| 26 | typedef void (*pvr2_stream_callback)(void *); | |
| 27 | ||
| 28 | enum pvr2_buffer_state { | |
| 29 | pvr2_buffer_state_none = 0, // Not on any list | |
| 30 | pvr2_buffer_state_idle = 1, // Buffer is ready to be used again | |
| 31 | pvr2_buffer_state_queued = 2, // Buffer has been queued for filling | |
| 32 | pvr2_buffer_state_ready = 3, // Buffer has data available | |
| 33 | }; | |
| 34 | ||
| 35 | struct pvr2_stream; | |
| 36 | struct pvr2_buffer; | |
| 37 | ||
| ad0992e9 MI |
38 | struct pvr2_stream_stats { |
| 39 | unsigned int buffers_in_queue; | |
| 40 | unsigned int buffers_in_idle; | |
| 41 | unsigned int buffers_in_ready; | |
| 42 | unsigned int buffers_processed; | |
| 43 | unsigned int buffers_failed; | |
| 44 | unsigned int bytes_processed; | |
| 45 | }; | |
| 46 | ||
| d855497e MI |
47 | /* Initialize / tear down stream structure */ |
| 48 | struct pvr2_stream *pvr2_stream_create(void); | |
| 49 | void pvr2_stream_destroy(struct pvr2_stream *); | |
| 50 | void pvr2_stream_setup(struct pvr2_stream *, | |
| 51 | struct usb_device *dev,int endpoint, | |
| 52 | unsigned int tolerance); | |
| 53 | void pvr2_stream_set_callback(struct pvr2_stream *, | |
| 54 | pvr2_stream_callback func, | |
| 55 | void *data); | |
| ad0992e9 MI |
56 | void pvr2_stream_get_stats(struct pvr2_stream *, |
| 57 | struct pvr2_stream_stats *, | |
| 58 | int zero_counts); | |
| d855497e MI |
59 | |
| 60 | /* Query / set the nominal buffer count */ | |
| e61b6fc5 | 61 | int pvr2_stream_get_buffer_count(struct pvr2_stream *); |
| d855497e MI |
62 | int pvr2_stream_set_buffer_count(struct pvr2_stream *,unsigned int); |
| 63 | ||
| 64 | /* Get a pointer to a buffer that is either idle, ready, or is specified | |
| 65 | named. */ | |
| 66 | struct pvr2_buffer *pvr2_stream_get_idle_buffer(struct pvr2_stream *); | |
| 67 | struct pvr2_buffer *pvr2_stream_get_ready_buffer(struct pvr2_stream *); | |
| 68 | struct pvr2_buffer *pvr2_stream_get_buffer(struct pvr2_stream *sp,int id); | |
| 69 | ||
| 70 | /* Find out how many buffers are idle or ready */ | |
| d855497e MI |
71 | int pvr2_stream_get_ready_count(struct pvr2_stream *); |
| 72 | ||
| e61b6fc5 | 73 | |
| d855497e MI |
74 | /* Kill all pending buffers and throw away any ready buffers as well */ |
| 75 | void pvr2_stream_kill(struct pvr2_stream *); | |
| 76 | ||
| 77 | /* Set up the actual storage for a buffer */ | |
| 78 | int pvr2_buffer_set_buffer(struct pvr2_buffer *,void *ptr,unsigned int cnt); | |
| 79 | ||
| 80 | /* Find out size of data in the given ready buffer */ | |
| 81 | unsigned int pvr2_buffer_get_count(struct pvr2_buffer *); | |
| 82 | ||
| 83 | /* Retrieve completion code for given ready buffer */ | |
| 84 | int pvr2_buffer_get_status(struct pvr2_buffer *); | |
| 85 | ||
| d855497e MI |
86 | /* Retrieve ID of given buffer */ |
| 87 | int pvr2_buffer_get_id(struct pvr2_buffer *); | |
| 88 | ||
| 89 | /* Start reading into given buffer (kill it if needed) */ | |
| 90 | int pvr2_buffer_queue(struct pvr2_buffer *); | |
| 91 | ||
| d855497e | 92 | #endif /* __PVRUSB2_IO_H */ |