From a0a499c5792b8656cd51e11d5e0db9fb21640f58 Mon Sep 17 00:00:00 2001 From: Eduardo Valentin Date: Thu, 20 Aug 2009 16:18:26 +0300 Subject: [PATCH] ASoC: OMAP: Use DMA operating mode of McBSP Configures DMA sync mode depending on McBSP operating mode value. The value is configurable by McBSP instance. So, depending on McBSP operating mode, the DMA sync mode is passed from omap-mcbsp to omap-pcm. Besides that, it also configures McBSP threshold value depending on which McBSP mode is activated. Signed-off-by: Eduardo Valentin Acked-by: Jarkko Nikula Signed-off-by: Mark Brown --- sound/soc/omap/omap-mcbsp.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c index 580de5a..f5387d9 100644 --- a/sound/soc/omap/omap-mcbsp.c +++ b/sound/soc/omap/omap-mcbsp.c @@ -144,7 +144,14 @@ static void omap_mcbsp_set_threshold(struct snd_pcm_substream *substream) struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data); - int samples = snd_pcm_lib_period_bytes(substream) >> 1; + int dma_op_mode = omap_mcbsp_get_dma_op_mode(mcbsp_data->bus_id); + int samples; + + /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */ + if (dma_op_mode == MCBSP_DMA_MODE_THRESHOLD) + samples = snd_pcm_lib_period_bytes(substream) >> 1; + else + samples = 1; /* Configure McBSP internal buffer usage */ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) @@ -166,6 +173,7 @@ static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream, err = omap_mcbsp_request(bus_id); if (cpu_is_omap343x()) { + int dma_op_mode = omap_mcbsp_get_dma_op_mode(bus_id); int max_period; /* @@ -187,7 +195,8 @@ static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream, max_period++; max_period <<= 1; - snd_pcm_hw_constraint_minmax(substream->runtime, + if (dma_op_mode == MCBSP_DMA_MODE_THRESHOLD) + snd_pcm_hw_constraint_minmax(substream->runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32, max_period); } @@ -269,7 +278,10 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream, port = omap34xx_mcbsp_port[bus_id][substream->stream]; omap_mcbsp_dai_dma_params[id][substream->stream].set_threshold = omap_mcbsp_set_threshold; - sync_mode = OMAP_DMA_SYNC_FRAME; + /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */ + if (omap_mcbsp_get_dma_op_mode(bus_id) == + MCBSP_DMA_MODE_THRESHOLD) + sync_mode = OMAP_DMA_SYNC_FRAME; } else { return -ENODEV; } -- 2.7.4