Hi: Are there anybody using the ALSA architecture aic33 driver on davinci platform? I tried but still can't trigger the DMA of ALSA davinci audio driver, Why the ALSA DMA operation are not as much as in OSS one? For example : About the DMA channel request, in OSS architecture, the davinci_request_sound_dma in Sound/oss/davinci-audio-dma-intfc.c will request 2 slave DMA channels for stereo , but the davinci_pcm_dma_request in sound/soc/davinci/davinci-pcm.c only request 1 slave channel, About to trigger DMA play, the OSS will set src/dest parameter and index, transfer parameters(by audio_set_dma_params_play) every time before start dma(davinci_start_dma, davinci_mcbsp_start), but the ALSA will not do any settings before start dma(davinci_start_dma,davinci_mcbsp_start), Could any body give some direction on the ALSA driver on davinci? Thanks a lot for your help!!
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