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Diffstat (limited to 'sound/soc/fsl/fsl_asrc.c')
-rw-r--r--sound/soc/fsl/fsl_asrc.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
index 528e8b108422..0b937924d2e4 100644
--- a/sound/soc/fsl/fsl_asrc.c
+++ b/sound/soc/fsl/fsl_asrc.c
@@ -445,6 +445,19 @@ struct dma_chan *fsl_asrc_get_dma_channel(struct fsl_asrc_pair *pair, bool dir)
}
EXPORT_SYMBOL_GPL(fsl_asrc_get_dma_channel);
+static int fsl_asrc_dai_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct fsl_asrc *asrc_priv = snd_soc_dai_get_drvdata(dai);
+
+ /* Odd channel number is not valid for older ASRC (channel_bits==3) */
+ if (asrc_priv->channel_bits == 3)
+ snd_pcm_hw_constraint_step(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_CHANNELS, 2);
+
+ return 0;
+}
+
static int fsl_asrc_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
@@ -539,6 +552,7 @@ static int fsl_asrc_dai_trigger(struct snd_pcm_substream *substream, int cmd,
}
static const struct snd_soc_dai_ops fsl_asrc_dai_ops = {
+ .startup = fsl_asrc_dai_startup,
.hw_params = fsl_asrc_dai_hw_params,
.hw_free = fsl_asrc_dai_hw_free,
.trigger = fsl_asrc_dai_trigger,