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*参照元 [#zea27b3c] #backlinks *説明 [#d5334195] -パス: [[linux-4.4.1/include/sound/soc.h]] -FIXME: これは何？ --説明 **参考 [#ne9b8ecc] *実装 [#t76cadec] struct snd_soc_dai_link { /* config - must be set by machine driver */ const char *name; /* Codec name */ const char *stream_name; /* Stream name */ /* * You MAY specify the link's CPU-side device, either by device name, * or by DT/OF node, but not both. If this information is omitted, * the CPU-side DAI is matched using .cpu_dai_name only, which hence * must be globally unique. These fields are currently typically used * only for codec to codec links, or systems using device tree. */ const char *cpu_name; struct device_node *cpu_of_node; - --[[linux-4.4.1/device_node]] /* * You MAY specify the DAI name of the CPU DAI. If this information is * omitted, the CPU-side DAI is matched using .cpu_name/.cpu_of_node * only, which only works well when that device exposes a single DAI. */ const char *cpu_dai_name; /* * You MUST specify the link's codec, either by device name, or by * DT/OF node, but not both. */ const char *codec_name; struct device_node *codec_of_node; /* You MUST specify the DAI name within the codec */ const char *codec_dai_name; struct snd_soc_dai_link_component *codecs; unsigned int num_codecs; - --[[linux-4.4.1/snd_soc_dai_link_component]] /* * You MAY specify the link's platform/PCM/DMA driver, either by * device name, or by DT/OF node, but not both. Some forms of link * do not need a platform. */ const char *platform_name; struct device_node *platform_of_node; int be_id; /* optional ID for machine driver BE identification */ const struct snd_soc_pcm_stream *params; unsigned int num_params; - --[[linux-4.4.1/snd_soc_pcm_stream]] unsigned int dai_fmt; /* format to set on init */ enum snd_soc_dpcm_trigger trigger[2]; /* trigger type for DPCM */ - --[[linux-4.4.1/snd_soc_dpcm_trigger]] /* codec/machine specific init - e.g. add machine controls */ int (*init)(struct snd_soc_pcm_runtime *rtd); - --[[linux-4.4.1/snd_soc_pcm_runtime]] /* optional hw_params re-writing for BE and FE sync */ int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd, struct snd_pcm_hw_params *params); - --[[linux-4.4.1/snd_pcm_hw_params]] /* machine stream operations */ const struct snd_soc_ops *ops; const struct snd_soc_compr_ops *compr_ops; - --[[linux-4.4.1/snd_soc_ops]] --[[linux-4.4.1/snd_soc_compr_ops]] /* For unidirectional dai links */ bool playback_only; bool capture_only; /* Mark this pcm with non atomic ops */ bool nonatomic; /* Keep DAI active over suspend */ unsigned int ignore_suspend:1; /* Symmetry requirements */ unsigned int symmetric_rates:1; unsigned int symmetric_channels:1; unsigned int symmetric_samplebits:1; /* Do not create a PCM for this DAI link (Backend link) */ unsigned int no_pcm:1; /* This DAI link can route to other DAI links at runtime (Frontend)*/ unsigned int dynamic:1; /* DPCM capture and Playback support */ unsigned int dpcm_capture:1; unsigned int dpcm_playback:1; /* DPCM used FE & BE merged format */ unsigned int dpcm_merged_format:1; /* pmdown_time is ignored at stop */ unsigned int ignore_pmdown_time:1; }; *コメント [#afd5d06a]
