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ASoC: imx: Setup dma data in DAI probe 

This allows us to access the DAI DMA data when we create the PCM. We'll use
this when converting imx to generic DMA engine PCM driver.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Lars-Peter Clausen 2013-04-15 19:19:58 +02:00 committed by Mark Brown
parent 610f780050
commit fc8ba7f94d
2 changed files with 17 additions and 24 deletions
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19
sound/soc/fsl/fsl_ssi.c
View File

@ -425,12 +425,6 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream,
ssi_private->second_stream = substream;
}
if (ssi_private->ssi_on_imx)
snd_soc_dai_set_dma_data(dai, substream,
(substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
&ssi_private->dma_params_tx :
&ssi_private->dma_params_rx);
return 0;
}
@ -552,6 +546,18 @@ static void fsl_ssi_shutdown(struct snd_pcm_substream *substream,
}
}
static int fsl_ssi_dai_probe(struct snd_soc_dai *dai)
{
struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(dai);
if (ssi_private->ssi_on_imx) {
dai->playback_dma_data = &ssi_private->dma_params_tx;
dai->capture_dma_data = &ssi_private->dma_params_rx;
}
return 0;
}
static const struct snd_soc_dai_ops fsl_ssi_dai_ops = {
.startup = fsl_ssi_startup,
.hw_params = fsl_ssi_hw_params,
@ -561,6 +567,7 @@ static const struct snd_soc_dai_ops fsl_ssi_dai_ops = {
/* Template for the CPU dai driver structure */
static struct snd_soc_dai_driver fsl_ssi_dai_template = {
.probe = fsl_ssi_dai_probe,
.playback = {
/* The SSI does not support monaural audio. */
.channels_min = 2,

22
sound/soc/fsl/imx-ssi.c
View File

@ -232,23 +232,6 @@ static int imx_ssi_set_dai_clkdiv(struct snd_soc_dai *cpu_dai,
return 0;
}
static int imx_ssi_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *cpu_dai)
{
struct imx_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai);
struct snd_dmaengine_dai_dma_data *dma_data;
/* Tx/Rx config */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
dma_data = &ssi->dma_params_tx;
else
dma_data = &ssi->dma_params_rx;
snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
return 0;
}
/*
* Should only be called when port is inactive (i.e. SSIEN = 0),
* although can be called multiple times by upper layers.
@ -353,7 +336,6 @@ static int imx_ssi_trigger(struct snd_pcm_substream *substream, int cmd,
}
static const struct snd_soc_dai_ops imx_ssi_pcm_dai_ops = {
.startup = imx_ssi_startup,
.hw_params = imx_ssi_hw_params,
.set_fmt = imx_ssi_set_dai_fmt,
.set_clkdiv = imx_ssi_set_dai_clkdiv,
@ -373,6 +355,10 @@ static int imx_ssi_dai_probe(struct snd_soc_dai *dai)
SSI_SFCSR_RFWM0(ssi->dma_params_rx.maxburst);
writel(val, ssi->base + SSI_SFCSR);
/* Tx/Rx config */
dai->playback_dma_data = &ssi->dma_params_tx;
dai->capture_dma_data = &ssi->dma_params_rx;
return 0;
}