ASoC: rockchip: i2s: add other configurable formats

simple-audio-card,bitclock-inversion = <1> : bclk falling edge taken
simple-audio-card,format = "dsp_a" : pcm no delay mode
simple-audio-card,format = "dsp_b" : pcm late 1 mode
Signed-off-by: zhangjun <zhangjun@rock-chips.com>
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/rockchip/rockchip_i2s.c

@@ -204,7 +204,21 @@ static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
 
 	regmap_update_bits(i2s->regmap, I2S_CKR, mask, val);
 
-	mask = I2S_TXCR_IBM_MASK;
+	mask = I2S_CKR_CKP_MASK;
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		val = I2S_CKR_CKP_NEG;
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		val = I2S_CKR_CKP_POS;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	regmap_update_bits(i2s->regmap, I2S_CKR, mask, val);
+
+	mask = I2S_TXCR_IBM_MASK | I2S_TXCR_TFS_MASK | I2S_TXCR_PBM_MASK;
 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 	case SND_SOC_DAIFMT_RIGHT_J:
 		val = I2S_TXCR_IBM_RSJM;
@@ -215,13 +229,19 @@ static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
 	case SND_SOC_DAIFMT_I2S:
 		val = I2S_TXCR_IBM_NORMAL;
 		break;
+	case SND_SOC_DAIFMT_DSP_A: /* PCM no delay mode */
+		val = I2S_TXCR_TFS_PCM;
+		break;
+	case SND_SOC_DAIFMT_DSP_B: /* PCM delay 1 mode */
+		val = I2S_TXCR_TFS_PCM | I2S_TXCR_PBM_MODE(1);
+		break;
 	default:
 		return -EINVAL;
 	}
 
 	regmap_update_bits(i2s->regmap, I2S_TXCR, mask, val);
 
-	mask = I2S_RXCR_IBM_MASK;
+	mask = I2S_RXCR_IBM_MASK | I2S_RXCR_TFS_MASK | I2S_RXCR_PBM_MASK;
 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 	case SND_SOC_DAIFMT_RIGHT_J:
 		val = I2S_RXCR_IBM_RSJM;
@@ -232,6 +252,12 @@ static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
 	case SND_SOC_DAIFMT_I2S:
 		val = I2S_RXCR_IBM_NORMAL;
 		break;
+	case SND_SOC_DAIFMT_DSP_A: /* PCM no delay mode */
+		val = I2S_RXCR_TFS_PCM;
+		break;
+	case SND_SOC_DAIFMT_DSP_B: /* PCM delay 1 mode */
+		val = I2S_RXCR_TFS_PCM | I2S_RXCR_PBM_MODE(1);
+		break;
 	default:
 		return -EINVAL;
 	}

sound/soc/rockchip/rockchip_i2s.h

@@ -41,6 +41,7 @@
 #define I2S_TXCR_TFS_SHIFT	5
 #define I2S_TXCR_TFS_I2S	(0 << I2S_TXCR_TFS_SHIFT)
 #define I2S_TXCR_TFS_PCM	(1 << I2S_TXCR_TFS_SHIFT)
+#define I2S_TXCR_TFS_MASK	(1 << I2S_TXCR_TFS_SHIFT)
 #define I2S_TXCR_VDW_SHIFT	0
 #define I2S_TXCR_VDW(x)		((x - 1) << I2S_TXCR_VDW_SHIFT)
 #define I2S_TXCR_VDW_MASK	(0x1f << I2S_TXCR_VDW_SHIFT)
@@ -70,6 +71,7 @@
 #define I2S_RXCR_TFS_SHIFT	5
 #define I2S_RXCR_TFS_I2S	(0 << I2S_RXCR_TFS_SHIFT)
 #define I2S_RXCR_TFS_PCM	(1 << I2S_RXCR_TFS_SHIFT)
+#define I2S_RXCR_TFS_MASK	(1 << I2S_RXCR_TFS_SHIFT)
 #define I2S_RXCR_VDW_SHIFT	0
 #define I2S_RXCR_VDW(x)		((x - 1) << I2S_RXCR_VDW_SHIFT)
 #define I2S_RXCR_VDW_MASK	(0x1f << I2S_RXCR_VDW_SHIFT)
@@ -91,6 +93,7 @@
 #define I2S_CKR_CKP_SHIFT	26
 #define I2S_CKR_CKP_NEG		(0 << I2S_CKR_CKP_SHIFT)
 #define I2S_CKR_CKP_POS		(1 << I2S_CKR_CKP_SHIFT)
+#define I2S_CKR_CKP_MASK	(1 << I2S_CKR_CKP_SHIFT)
 #define I2S_CKR_RLP_SHIFT	25
 #define I2S_CKR_RLP_NORMAL	(0 << I2S_CKR_RLP_SHIFT)
 #define I2S_CKR_RLP_OPPSITE	(1 << I2S_CKR_RLP_SHIFT)