1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * ALSA interface to ivtv PCM capture streams |
4 | * |
5 | * Copyright (C) 2009,2012 Andy Walls <awalls@md.metrocast.net> |
6 | * Copyright (C) 2009 Devin Heitmueller <dheitmueller@kernellabs.com> |
7 | */ |
8 | |
9 | struct snd_card; |
10 | |
11 | struct snd_ivtv_card { |
12 | struct v4l2_device *v4l2_dev; |
13 | struct snd_card *sc; |
14 | unsigned int capture_transfer_done; |
15 | unsigned int hwptr_done_capture; |
16 | struct snd_pcm_substream *capture_pcm_substream; |
17 | spinlock_t slock; |
18 | }; |
19 | |
20 | extern int ivtv_alsa_debug; |
21 | |
22 | /* |
23 | * File operations that manipulate the encoder or video or audio subdevices |
24 | * need to be serialized. Use the same lock we use for v4l2 file ops. |
25 | */ |
26 | static inline void snd_ivtv_lock(struct snd_ivtv_card *itvsc) |
27 | { |
28 | struct ivtv *itv = to_ivtv(v4l2_dev: itvsc->v4l2_dev); |
29 | mutex_lock(&itv->serialize_lock); |
30 | } |
31 | |
32 | static inline void snd_ivtv_unlock(struct snd_ivtv_card *itvsc) |
33 | { |
34 | struct ivtv *itv = to_ivtv(v4l2_dev: itvsc->v4l2_dev); |
35 | mutex_unlock(lock: &itv->serialize_lock); |
36 | } |
37 | |
38 | #define IVTV_ALSA_DBGFLG_WARN (1 << 0) |
39 | #define IVTV_ALSA_DBGFLG_INFO (1 << 1) |
40 | |
41 | #define IVTV_ALSA_DEBUG(x, type, fmt, args...) \ |
42 | do { \ |
43 | if ((x) & ivtv_alsa_debug) \ |
44 | pr_info("%s-alsa: " type ": " fmt, \ |
45 | v4l2_dev->name , ## args); \ |
46 | } while (0) |
47 | |
48 | #define IVTV_ALSA_DEBUG_WARN(fmt, args...) \ |
49 | IVTV_ALSA_DEBUG(IVTV_ALSA_DBGFLG_WARN, "warning", fmt , ## args) |
50 | |
51 | #define IVTV_ALSA_DEBUG_INFO(fmt, args...) \ |
52 | IVTV_ALSA_DEBUG(IVTV_ALSA_DBGFLG_INFO, "info", fmt , ## args) |
53 | |
54 | #define IVTV_ALSA_ERR(fmt, args...) \ |
55 | pr_err("%s-alsa: " fmt, v4l2_dev->name , ## args) |
56 | |
57 | #define IVTV_ALSA_WARN(fmt, args...) \ |
58 | pr_warn("%s-alsa: " fmt, v4l2_dev->name , ## args) |
59 | |
60 | #define IVTV_ALSA_INFO(fmt, args...) \ |
61 | pr_info("%s-alsa: " fmt, v4l2_dev->name , ## args) |
62 | |