1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * ALSA interface to ivtv PCM capture streams
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2009,2012 Andy Walls <awalls@md.metrocast.net>
6*4882a593Smuzhiyun * Copyright (C) 2009 Devin Heitmueller <dheitmueller@kernellabs.com>
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun struct snd_card;
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun struct snd_ivtv_card {
12*4882a593Smuzhiyun struct v4l2_device *v4l2_dev;
13*4882a593Smuzhiyun struct snd_card *sc;
14*4882a593Smuzhiyun unsigned int capture_transfer_done;
15*4882a593Smuzhiyun unsigned int hwptr_done_capture;
16*4882a593Smuzhiyun struct snd_pcm_substream *capture_pcm_substream;
17*4882a593Smuzhiyun spinlock_t slock;
18*4882a593Smuzhiyun };
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun extern int ivtv_alsa_debug;
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun /*
23*4882a593Smuzhiyun * File operations that manipulate the encoder or video or audio subdevices
24*4882a593Smuzhiyun * need to be serialized. Use the same lock we use for v4l2 file ops.
25*4882a593Smuzhiyun */
snd_ivtv_lock(struct snd_ivtv_card * itvsc)26*4882a593Smuzhiyun static inline void snd_ivtv_lock(struct snd_ivtv_card *itvsc)
27*4882a593Smuzhiyun {
28*4882a593Smuzhiyun struct ivtv *itv = to_ivtv(itvsc->v4l2_dev);
29*4882a593Smuzhiyun mutex_lock(&itv->serialize_lock);
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun
snd_ivtv_unlock(struct snd_ivtv_card * itvsc)32*4882a593Smuzhiyun static inline void snd_ivtv_unlock(struct snd_ivtv_card *itvsc)
33*4882a593Smuzhiyun {
34*4882a593Smuzhiyun struct ivtv *itv = to_ivtv(itvsc->v4l2_dev);
35*4882a593Smuzhiyun mutex_unlock(&itv->serialize_lock);
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun #define IVTV_ALSA_DBGFLG_WARN (1 << 0)
39*4882a593Smuzhiyun #define IVTV_ALSA_DBGFLG_INFO (1 << 1)
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun #define IVTV_ALSA_DEBUG(x, type, fmt, args...) \
42*4882a593Smuzhiyun do { \
43*4882a593Smuzhiyun if ((x) & ivtv_alsa_debug) \
44*4882a593Smuzhiyun pr_info("%s-alsa: " type ": " fmt, \
45*4882a593Smuzhiyun v4l2_dev->name , ## args); \
46*4882a593Smuzhiyun } while (0)
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun #define IVTV_ALSA_DEBUG_WARN(fmt, args...) \
49*4882a593Smuzhiyun IVTV_ALSA_DEBUG(IVTV_ALSA_DBGFLG_WARN, "warning", fmt , ## args)
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun #define IVTV_ALSA_DEBUG_INFO(fmt, args...) \
52*4882a593Smuzhiyun IVTV_ALSA_DEBUG(IVTV_ALSA_DBGFLG_INFO, "info", fmt , ## args)
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun #define IVTV_ALSA_ERR(fmt, args...) \
55*4882a593Smuzhiyun pr_err("%s-alsa: " fmt, v4l2_dev->name , ## args)
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun #define IVTV_ALSA_WARN(fmt, args...) \
58*4882a593Smuzhiyun pr_warn("%s-alsa: " fmt, v4l2_dev->name , ## args)
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun #define IVTV_ALSA_INFO(fmt, args...) \
61*4882a593Smuzhiyun pr_info("%s-alsa: " fmt, v4l2_dev->name , ## args)
62