diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 9bc29fdd13c5..5c85fefe81e7 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -21,6 +21,7 @@
 #include <sound/dmaengine_pcm.h>
 
 #include "rockchip_i2s.h"
+#include "rockchip_dlp_pcm.h"
 
 #define DRV_NAME "rockchip-i2s"
 
@@ -798,7 +799,8 @@ static bool rockchip_i2s_rd_reg(struct device *dev, unsigned int reg)
 	case I2S_CLR:
 	case I2S_TXDR:
 	case I2S_RXDR:
-	case I2S_FIFOLR:
+	case I2S_TXFIFOLR:
+	case I2S_RXFIFOLR:
 	case I2S_INTSR:
 		return true;
 	default:
@@ -811,7 +813,8 @@ static bool rockchip_i2s_volatile_reg(struct device *dev, unsigned int reg)
 	switch (reg) {
 	case I2S_INTSR:
 	case I2S_CLR:
-	case I2S_FIFOLR:
+	case I2S_TXFIFOLR:
+	case I2S_RXFIFOLR:
 	case I2S_TXDR:
 	case I2S_RXDR:
 		return true;
@@ -1016,6 +1019,36 @@ static int rockchip_i2s_keep_clk_always_on(struct rk_i2s_dev *i2s)
 	return 0;
 }
 
+static int rockchip_i2s_get_fifo_count(struct device *dev,
+				       struct snd_pcm_substream *substream)
+{
+	struct rk_i2s_dev *i2s = dev_get_drvdata(dev);
+	unsigned int tx, rx;
+	int val = 0;
+
+	regmap_read(i2s->regmap, I2S_TXFIFOLR, &tx);
+	regmap_read(i2s->regmap, I2S_RXFIFOLR, &rx);
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		val = I2S_FIFOLR_XFL3(tx) +
+		      I2S_FIFOLR_XFL2(tx) +
+		      I2S_FIFOLR_XFL1(tx) +
+		      I2S_FIFOLR_XFL0(tx);
+	else
+		/* XFL4 is compatible for old version */
+		val = I2S_FIFOLR_XFL4(tx) +
+		      I2S_FIFOLR_XFL3(rx) +
+		      I2S_FIFOLR_XFL2(rx) +
+		      I2S_FIFOLR_XFL1(rx) +
+		      I2S_FIFOLR_XFL0(rx);
+
+	return val;
+}
+
+static const struct snd_dlp_config dconfig = {
+	.get_fifo_count = rockchip_i2s_get_fifo_count,
+};
+
 static int rockchip_i2s_probe(struct platform_device *pdev)
 {
 	struct device_node *node = pdev->dev.of_node;
@@ -1141,7 +1174,11 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
 		return 0;
 	}
 
-	ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+	if (device_property_read_bool(&pdev->dev, "rockchip,digital-loopback"))
+		ret = devm_snd_dmaengine_dlp_register(&pdev->dev, &dconfig);
+	else
+		ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+
 	if (ret) {
 		dev_err(&pdev->dev, "Could not register PCM\n");
 		goto err_suspend;
diff --git a/sound/soc/rockchip/rockchip_i2s.h b/sound/soc/rockchip/rockchip_i2s.h
index 251851bf4f2c..bf71ea59ab0c 100644
--- a/sound/soc/rockchip/rockchip_i2s.h
+++ b/sound/soc/rockchip/rockchip_i2s.h
@@ -229,7 +229,7 @@ enum {
 #define I2S_TXCR	(0x0000)
 #define I2S_RXCR	(0x0004)
 #define I2S_CKR		(0x0008)
-#define I2S_FIFOLR	(0x000c)
+#define I2S_TXFIFOLR	(0x000c)
 #define I2S_DMACR	(0x0010)
 #define I2S_INTCR	(0x0014)
 #define I2S_INTSR	(0x0018)
@@ -237,6 +237,7 @@ enum {
 #define I2S_CLR		(0x0020)
 #define I2S_TXDR	(0x0024)
 #define I2S_RXDR	(0x0028)
+#define I2S_RXFIFOLR	(0x002c)
 
 /* io direction cfg register */
 #define I2S_IO_DIRECTION_MASK	(7)
@@ -245,4 +246,11 @@ enum {
 #define I2S_IO_4CH_OUT_6CH_IN	(6)
 #define I2S_IO_2CH_OUT_8CH_IN	(7)
 
+/* XFL4 is compatible for old version */
+#define I2S_FIFOLR_XFL4(v)	(((v) & GENMASK(29, 24)) >> 24)
+#define I2S_FIFOLR_XFL3(v)	(((v) & GENMASK(23, 18)) >> 18)
+#define I2S_FIFOLR_XFL2(v)	(((v) & GENMASK(17, 12)) >> 12)
+#define I2S_FIFOLR_XFL1(v)	(((v) & GENMASK(11, 6)) >> 6)
+#define I2S_FIFOLR_XFL0(v)	(((v) & GENMASK(5, 0)) >> 0)
+
 #endif /* _ROCKCHIP_IIS_H */