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*参照元 [#gadfbc20] #backlinks *説明 [#x5b0897c] -パス: [[linux-4.4.1/include/sound/dmaengine_pcm.h]] -FIXME: これは何？ --説明 **参考 [#c58ae71d] *実装 [#g0fa22a2] /** * struct snd_dmaengine_pcm_config - Configuration data for dmaengine based PCM * @prepare_slave_config: Callback used to fill in the DMA slave_config for a * PCM substream. Will be called from the PCM drivers hwparams callback. * @compat_request_channel: Callback to request a DMA channel for platforms * which do not use devicetree. * @compat_filter_fn: Will be used as the filter function when requesting a * channel for platforms which do not use devicetree. The filter parameter * will be the DAI's DMA data. * @dma_dev: If set, request DMA channel on this device rather than the DAI * device. * @chan_names: If set, these custom DMA channel names will be requested at * registration time. * @pcm_hardware: snd_pcm_hardware struct to be used for the PCM. * @prealloc_buffer_size: Size of the preallocated audio buffer. * * Note: If both compat_request_channel and compat_filter_fn are set * compat_request_channel will be used to request the channel and * compat_filter_fn will be ignored. Otherwise the channel will be requested * using dma_request_channel with compat_filter_fn as the filter function. */ struct snd_dmaengine_pcm_config { int (*prepare_slave_config)(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct dma_slave_config *slave_config); - --[[linux-4.4.1/snd_pcm_substream]] --[[linux-4.4.1/snd_pcm_hw_params]] --[[linux-4.4.1/dma_slave_config]] struct dma_chan *(*compat_request_channel)( struct snd_soc_pcm_runtime *rtd, struct snd_pcm_substream *substream); - --[[linux-4.4.1/snd_soc_pcm_runtime]] dma_filter_fn compat_filter_fn; - --[[linux-4.4.1/dma_filter_fn]] struct device *dma_dev; const char *chan_names[SNDRV_PCM_STREAM_LAST + 1]; - --[[linux-4.4.1/device]] const struct snd_pcm_hardware *pcm_hardware; unsigned int prealloc_buffer_size; - --[[linux-4.4.1/snd_pcm_hardware]] }; *コメント [#df76038d]
