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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * ALSA interface to cx18 PCM capture streams4 *5 * Copyright (C) 2009 Andy Walls <awalls@md.metrocast.net>6 */7 8struct snd_card;9 10struct snd_cx18_card {11 struct v4l2_device *v4l2_dev;12 struct snd_card *sc;13 unsigned int capture_transfer_done;14 unsigned int hwptr_done_capture;15 struct snd_pcm_substream *capture_pcm_substream;16 spinlock_t slock;17};18 19extern int cx18_alsa_debug;20 21/*22 * File operations that manipulate the encoder or video or audio subdevices23 * need to be serialized. Use the same lock we use for v4l2 file ops.24 */25static inline void snd_cx18_lock(struct snd_cx18_card *cxsc)26{27 struct cx18 *cx = to_cx18(cxsc->v4l2_dev);28 mutex_lock(&cx->serialize_lock);29}30 31static inline void snd_cx18_unlock(struct snd_cx18_card *cxsc)32{33 struct cx18 *cx = to_cx18(cxsc->v4l2_dev);34 mutex_unlock(&cx->serialize_lock);35}36 37#define CX18_ALSA_DBGFLG_WARN (1 << 0)38#define CX18_ALSA_DBGFLG_INFO (1 << 1)39 40#define CX18_ALSA_DEBUG(x, type, fmt, args...) \41 do { \42 if ((x) & cx18_alsa_debug) \43 printk(KERN_INFO "%s-alsa: " type ": " fmt, \44 v4l2_dev->name , ## args); \45 } while (0)46 47#define CX18_ALSA_DEBUG_WARN(fmt, args...) \48 CX18_ALSA_DEBUG(CX18_ALSA_DBGFLG_WARN, "warning", fmt , ## args)49 50#define CX18_ALSA_DEBUG_INFO(fmt, args...) \51 CX18_ALSA_DEBUG(CX18_ALSA_DBGFLG_INFO, "info", fmt , ## args)52 53#define CX18_ALSA_ERR(fmt, args...) \54 printk(KERN_ERR "%s-alsa: " fmt, v4l2_dev->name , ## args)55 56#define CX18_ALSA_WARN(fmt, args...) \57 printk(KERN_WARNING "%s-alsa: " fmt, v4l2_dev->name , ## args)58 59#define CX18_ALSA_INFO(fmt, args...) \60 printk(KERN_INFO "%s-alsa: " fmt, v4l2_dev->name , ## args)61