diff options
Diffstat (limited to 'include/sound/pcm.h')
| -rw-r--r-- | include/sound/pcm.h | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 5ec42dbd2308..b48792fe386b 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -181,6 +181,8 @@ struct snd_pcm_ops { #define SNDRV_PCM_FMTBIT_G723_24_1B _SNDRV_PCM_FMTBIT(G723_24_1B) #define SNDRV_PCM_FMTBIT_G723_40 _SNDRV_PCM_FMTBIT(G723_40) #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) #ifdef SNDRV_LITTLE_ENDIAN #define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_LE @@ -659,7 +661,7 @@ static inline snd_pcm_sframes_t snd_pcm_capture_hw_avail(struct snd_pcm_runtime * * Checks whether enough free space is available on the playback buffer. * - * Returns non-zero if available, or zero if not. + * Return: Non-zero if available, or zero if not. */ static inline int snd_pcm_playback_ready(struct snd_pcm_substream *substream) { @@ -673,7 +675,7 @@ static inline int snd_pcm_playback_ready(struct snd_pcm_substream *substream) * * Checks whether enough capture data is available on the capture buffer. * - * Returns non-zero if available, or zero if not. + * Return: Non-zero if available, or zero if not. */ static inline int snd_pcm_capture_ready(struct snd_pcm_substream *substream) { @@ -685,10 +687,10 @@ static inline int snd_pcm_capture_ready(struct snd_pcm_substream *substream) * snd_pcm_playback_data - check whether any data exists on the playback buffer * @substream: the pcm substream instance * - * Checks whether any data exists on the playback buffer. If stop_threshold - * is bigger or equal to boundary, then this function returns always non-zero. + * Checks whether any data exists on the playback buffer. * - * Returns non-zero if exists, or zero if not. + * Return: Non-zero if any data exists, or zero if not. If stop_threshold + * is bigger or equal to boundary, then this function returns always non-zero. */ static inline int snd_pcm_playback_data(struct snd_pcm_substream *substream) { @@ -705,7 +707,7 @@ static inline int snd_pcm_playback_data(struct snd_pcm_substream *substream) * * Checks whether the playback buffer is empty. * - * Returns non-zero if empty, or zero if not. + * Return: Non-zero if empty, or zero if not. */ static inline int snd_pcm_playback_empty(struct snd_pcm_substream *substream) { @@ -719,7 +721,7 @@ static inline int snd_pcm_playback_empty(struct snd_pcm_substream *substream) * * Checks whether the capture buffer is empty. * - * Returns non-zero if empty, or zero if not. + * Return: Non-zero if empty, or zero if not. */ static inline int snd_pcm_capture_empty(struct snd_pcm_substream *substream) { @@ -852,7 +854,7 @@ int snd_pcm_format_big_endian(snd_pcm_format_t format); * snd_pcm_format_cpu_endian - Check the PCM format is CPU-endian * @format: the format to check * - * Returns 1 if the given PCM format is CPU-endian, 0 if + * Return: 1 if the given PCM format is CPU-endian, 0 if * opposite, or a negative error code if endian not specified. */ int snd_pcm_format_cpu_endian(snd_pcm_format_t format); @@ -963,7 +965,7 @@ struct page *snd_pcm_lib_get_vmalloc_page(struct snd_pcm_substream *substream, * contiguous in kernel virtual space, but not in physical memory. Use this * if the buffer is accessed by kernel code but not by device DMA. * - * Returns 1 if the buffer was changed, 0 if not changed, or a negative error + * Return: 1 if the buffer was changed, 0 if not changed, or a negative error * code. */ static int snd_pcm_lib_alloc_vmalloc_buffer @@ -975,6 +977,9 @@ static int snd_pcm_lib_alloc_vmalloc_buffer * * This function works like snd_pcm_lib_alloc_vmalloc_buffer(), but uses * vmalloc_32(), i.e., the pages are allocated from 32-bit-addressable memory. + * + * Return: 1 if the buffer was changed, 0 if not changed, or a negative error + * code. */ static int snd_pcm_lib_alloc_vmalloc_32_buffer (struct snd_pcm_substream *substream, size_t size); @@ -1070,6 +1075,8 @@ const char *snd_pcm_format_name(snd_pcm_format_t format); /** * snd_pcm_stream_str - Get a string naming the direction of a stream * @substream: the pcm substream instance + * + * Return: A string naming the direction of the stream. */ static inline const char *snd_pcm_stream_str(struct snd_pcm_substream *substream) { @@ -1126,4 +1133,10 @@ int snd_pcm_add_chmap_ctls(struct snd_pcm *pcm, int stream, unsigned long private_value, struct snd_pcm_chmap **info_ret); +/* Strong-typed conversion of pcm_format to bitwise */ +static inline u64 pcm_format_to_bits(snd_pcm_format_t pcm_format) +{ + return 1ULL << (__force int) pcm_format; +} + #endif /* __SOUND_PCM_H */ |