1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * cx18 init/start/stop/exit stream functions
4 *
5 * Derived from ivtv-streams.h
6 *
7 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
8 * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net>
9 */
10
11u32 cx18_find_handle(struct cx18 *cx);
12struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle);
13int cx18_streams_setup(struct cx18 *cx);
14int cx18_streams_register(struct cx18 *cx);
15void cx18_streams_cleanup(struct cx18 *cx, int unregister);
16
17#define CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN (3)
18void cx18_stream_rotate_idx_mdls(struct cx18 *cx);
19
20static inline bool cx18_stream_enabled(struct cx18_stream *s)
21{
22 return s->video_dev.v4l2_dev ||
23 (s->dvb && s->dvb->enabled) ||
24 (s->type == CX18_ENC_STREAM_TYPE_IDX &&
25 s->cx->stream_buffers[CX18_ENC_STREAM_TYPE_IDX] != 0);
26}
27
28/* Related to submission of mdls to firmware */
29static inline void cx18_stream_load_fw_queue(struct cx18_stream *s)
30{
31 schedule_work(work: &s->out_work_order);
32}
33
34static inline void cx18_stream_put_mdl_fw(struct cx18_stream *s,
35 struct cx18_mdl *mdl)
36{
37 /* Put mdl on q_free; the out work handler will move mdl(s) to q_busy */
38 cx18_enqueue(s, mdl, q: &s->q_free);
39 cx18_stream_load_fw_queue(s);
40}
41
42void cx18_out_work_handler(struct work_struct *work);
43
44/* Capture related */
45int cx18_start_v4l2_encode_stream(struct cx18_stream *s);
46int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end);
47
48void cx18_stop_all_captures(struct cx18 *cx);
49

source code of linux/drivers/media/pci/cx18/cx18-streams.h