diff options
Diffstat (limited to 'include/sound/pcm.h')
| -rw-r--r-- | include/sound/pcm.h | 52 |
1 files changed, 15 insertions, 37 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 6f3e10ca0e3..e862497f755 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -183,6 +183,7 @@ struct snd_pcm_ops { #define SNDRV_PCM_FMTBIT_G723_40_1B _SNDRV_PCM_FMTBIT(G723_40_1B) #define SNDRV_PCM_FMTBIT_DSD_U8 _SNDRV_PCM_FMTBIT(DSD_U8) #define SNDRV_PCM_FMTBIT_DSD_U16_LE _SNDRV_PCM_FMTBIT(DSD_U16_LE) +#define SNDRV_PCM_FMTBIT_DSD_U32_LE _SNDRV_PCM_FMTBIT(DSD_U32_LE) #ifdef SNDRV_LITTLE_ENDIAN #define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_LE @@ -365,6 +366,7 @@ struct snd_pcm_runtime { struct snd_pcm_group { /* keep linked substreams */ spinlock_t lock; + struct mutex mutex; struct list_head substreams; int count; }; @@ -460,6 +462,7 @@ struct snd_pcm { void (*private_free) (struct snd_pcm *pcm); struct device *dev; /* actual hw device this belongs to */ bool internal; /* pcm is for internal use only */ + bool nonatomic; /* whole PCM operations are in non-atomic context */ #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) struct snd_pcm_oss oss; #endif @@ -492,8 +495,6 @@ int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree); * Native I/O */ -extern rwlock_t snd_pcm_link_rwlock; - int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info); int snd_pcm_info_user(struct snd_pcm_substream *substream, struct snd_pcm_info __user *info); @@ -537,41 +538,18 @@ static inline int snd_pcm_stream_linked(struct snd_pcm_substream *substream) return substream->group != &substream->self_group; } -static inline void snd_pcm_stream_lock(struct snd_pcm_substream *substream) -{ - read_lock(&snd_pcm_link_rwlock); - spin_lock(&substream->self_group.lock); -} - -static inline void snd_pcm_stream_unlock(struct snd_pcm_substream *substream) -{ - spin_unlock(&substream->self_group.lock); - read_unlock(&snd_pcm_link_rwlock); -} - -static inline void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream) -{ - read_lock_irq(&snd_pcm_link_rwlock); - spin_lock(&substream->self_group.lock); -} - -static inline void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream) -{ - spin_unlock(&substream->self_group.lock); - read_unlock_irq(&snd_pcm_link_rwlock); -} - -#define snd_pcm_stream_lock_irqsave(substream, flags) \ -do { \ - read_lock_irqsave(&snd_pcm_link_rwlock, (flags)); \ - spin_lock(&substream->self_group.lock); \ -} while (0) - -#define snd_pcm_stream_unlock_irqrestore(substream, flags) \ -do { \ - spin_unlock(&substream->self_group.lock); \ - read_unlock_irqrestore(&snd_pcm_link_rwlock, (flags)); \ -} while (0) +void snd_pcm_stream_lock(struct snd_pcm_substream *substream); +void snd_pcm_stream_unlock(struct snd_pcm_substream *substream); +void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream); +void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream); +unsigned long _snd_pcm_stream_lock_irqsave(struct snd_pcm_substream *substream); +#define snd_pcm_stream_lock_irqsave(substream, flags) \ + do { \ + typecheck(unsigned long, flags); \ + flags = _snd_pcm_stream_lock_irqsave(substream); \ + } while (0) +void snd_pcm_stream_unlock_irqrestore(struct snd_pcm_substream *substream, + unsigned long flags); #define snd_pcm_group_for_each_entry(s, substream) \ list_for_each_entry(s, &substream->group->substreams, link_list) |