[PATCH 1/2] ASoC: fsl-asoc-card: Support configuring dai fmt from DT

[Shengjiu Wang <shengjiu.wang@xxxxxxx>]

Support same propeties as simple card for configuring fmt
from DT.
In order to make this change compatible with old DT, these
properties are optional.

Signed-off-by: Shengjiu Wang <shengjiu.wang@xxxxxxx>
---
 sound/soc/fsl/fsl-asoc-card.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c
index ee80d02b56c6..4848ba61d083 100644
--- a/sound/soc/fsl/fsl-asoc-card.c
+++ b/sound/soc/fsl/fsl-asoc-card.c
@@ -531,11 +531,14 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 	struct device_node *cpu_np, *codec_np, *asrc_np;
 	struct device_node *np = pdev->dev.of_node;
 	struct platform_device *asrc_pdev = NULL;
+	struct device_node *bitclkmaster = NULL;
+	struct device_node *framemaster = NULL;
 	struct platform_device *cpu_pdev;
 	struct fsl_asoc_card_priv *priv;
 	struct device *codec_dev = NULL;
 	const char *codec_dai_name;
 	const char *codec_dev_name;
+	unsigned int daifmt;
 	u32 width;
 	int ret;
 
@@ -667,6 +670,31 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 		goto asrc_fail;
 	}
 
+	/* Format info from DT is optional. */
+	daifmt = snd_soc_of_parse_daifmt(np, NULL,
+					 &bitclkmaster, &framemaster);
+	daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
+	if (bitclkmaster || framemaster) {
+		if (codec_np == bitclkmaster)
+			daifmt |= (codec_np == framemaster) ?
+				SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS;
+		else
+			daifmt |= (codec_np == framemaster) ?
+				SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS;
+
+		/* Override dai_fmt with value from DT */
+		priv->dai_fmt = daifmt;
+	}
+
+	/* Change direction according to format */
+	if (priv->dai_fmt & SND_SOC_DAIFMT_CBM_CFM) {
+		priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_IN;
+		priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_IN;
+	}
+
+	of_node_put(bitclkmaster);
+	of_node_put(framemaster);
+
 	if (!fsl_asoc_card_is_ac97(priv) && !codec_dev) {
 		dev_err(&pdev->dev, "failed to find codec device\n");
 		ret = -EPROBE_DEFER;
-- 
2.27.0