ESAI may need to use fixed slot width to comply with external
CODEC. So this set_tdm_slot() call will allow the ESAI driver
to override its default dynamic slot width policy.
Signed-off-by: Nicolin Chen <nicoleots...@gmail.com>
---
sound/soc/fsl/fsl-asoc-card.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c
index 14572e6..3f6959c 100644
--- a/sound/soc/fsl/fsl-asoc-card.c
+++ b/sound/soc/fsl/fsl-asoc-card.c
@@ -51,6 +51,7 @@ struct codec_priv {
* @sysclk_freq[2]: SYSCLK rates for set_sysclk()
* @sysclk_dir[2]: SYSCLK directions for set_sysclk()
* @sysclk_id[2]: SYSCLK ids for set_sysclk()
+ * @slot_width: Slot width of each frame
*
* Note: [1] for tx and [0] for rx
*/
@@ -58,6 +59,7 @@ struct cpu_priv {
unsigned long sysclk_freq[2];
u32 sysclk_dir[2];
u32 sysclk_id[2];
+ u32 slot_width;
};
/**
@@ -142,6 +144,15 @@ static int fsl_asoc_card_hw_params(struct
snd_pcm_substream *substream,
return ret;
}
+ if (cpu_priv->slot_width) {
+ ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2,
+ cpu_priv->slot_width);
+ if (ret) {
+ dev_err(dev, "failed to set TDM slot for cpu dai\n");
+ return ret;
+ }
+ }
+
return 0;
}
@@ -453,6 +464,7 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
priv->cpu_priv.sysclk_freq[RX] = priv->codec_priv.mclk_freq;
priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_OUT;
priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_OUT;
+ priv->cpu_priv.slot_width = 32;
priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
} else if (of_device_is_compatible(np, "fsl,imx-audio-sgtl5000")) {
priv->codec_priv.mclk_id = SGTL5000_SYSCLK;
--
1.9.1
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