62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* ALSA interface to ivtv PCM capture streams
|
|
*
|
|
* Copyright (C) 2009,2012 Andy Walls <awalls@md.metrocast.net>
|
|
* Copyright (C) 2009 Devin Heitmueller <dheitmueller@kernellabs.com>
|
|
*/
|
|
|
|
struct snd_card;
|
|
|
|
struct snd_ivtv_card {
|
|
struct v4l2_device *v4l2_dev;
|
|
struct snd_card *sc;
|
|
unsigned int capture_transfer_done;
|
|
unsigned int hwptr_done_capture;
|
|
struct snd_pcm_substream *capture_pcm_substream;
|
|
spinlock_t slock;
|
|
};
|
|
|
|
extern int ivtv_alsa_debug;
|
|
|
|
/*
|
|
* File operations that manipulate the encoder or video or audio subdevices
|
|
* need to be serialized. Use the same lock we use for v4l2 file ops.
|
|
*/
|
|
static inline void snd_ivtv_lock(struct snd_ivtv_card *itvsc)
|
|
{
|
|
struct ivtv *itv = to_ivtv(itvsc->v4l2_dev);
|
|
mutex_lock(&itv->serialize_lock);
|
|
}
|
|
|
|
static inline void snd_ivtv_unlock(struct snd_ivtv_card *itvsc)
|
|
{
|
|
struct ivtv *itv = to_ivtv(itvsc->v4l2_dev);
|
|
mutex_unlock(&itv->serialize_lock);
|
|
}
|
|
|
|
#define IVTV_ALSA_DBGFLG_WARN (1 << 0)
|
|
#define IVTV_ALSA_DBGFLG_INFO (1 << 1)
|
|
|
|
#define IVTV_ALSA_DEBUG(x, type, fmt, args...) \
|
|
do { \
|
|
if ((x) & ivtv_alsa_debug) \
|
|
pr_info("%s-alsa: " type ": " fmt, \
|
|
v4l2_dev->name , ## args); \
|
|
} while (0)
|
|
|
|
#define IVTV_ALSA_DEBUG_WARN(fmt, args...) \
|
|
IVTV_ALSA_DEBUG(IVTV_ALSA_DBGFLG_WARN, "warning", fmt , ## args)
|
|
|
|
#define IVTV_ALSA_DEBUG_INFO(fmt, args...) \
|
|
IVTV_ALSA_DEBUG(IVTV_ALSA_DBGFLG_INFO, "info", fmt , ## args)
|
|
|
|
#define IVTV_ALSA_ERR(fmt, args...) \
|
|
pr_err("%s-alsa: " fmt, v4l2_dev->name , ## args)
|
|
|
|
#define IVTV_ALSA_WARN(fmt, args...) \
|
|
pr_warn("%s-alsa: " fmt, v4l2_dev->name , ## args)
|
|
|
|
#define IVTV_ALSA_INFO(fmt, args...) \
|
|
pr_info("%s-alsa: " fmt, v4l2_dev->name , ## args)
|