cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cx18-alsa.h (1669B)


      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 *  ALSA interface to cx18 PCM capture streams
      4 *
      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 subdevices
     23 * 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)