davinci_mcasp_ch_constraint 716 sound/soc/ti/davinci-mcasp.c ret = davinci_mcasp_ch_constraint(mcasp, SNDRV_PCM_STREAM_PLAYBACK, davinci_mcasp_ch_constraint 721 sound/soc/ti/davinci-mcasp.c ret = davinci_mcasp_ch_constraint(mcasp, SNDRV_PCM_STREAM_CAPTURE,