[4/4] ASoC: fsl_sai: separate set_tdm_slot() for tx and rx

Commit Message

Shengjiu Wang March 28, 2025, 8:57 a.m. UTC

The transmitter and receiver of SAI can be used for different slot number
and slot width configuration, so refine fsl_sai_set_dai_tdm_slot(), add
fsl_sai_set_dai_tdm_slot_tx() for tx and fsl_sai_set_dai_tdm_slot_rx()
for rx.

Signed-off-by: Shengjiu Wang <[e-mail]>
---
 sound/soc/fsl/fsl_sai.c | 45 ++++++++++++++++++++++++++++++++---------
 sound/soc/fsl/fsl_sai.h |  4 ++--
 2 files changed, 37 insertions(+), 12 deletions(-)

Patch

diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index 09054e339b31..af1a168d35e3 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -163,17 +163,42 @@  static irqreturn_t fsl_sai_isr(int irq, void *devid)
 	return iret;
 }
 
-static int fsl_sai_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask,
-				u32 rx_mask, int slots, int slot_width)
+static int fsl_sai_set_dai_tdm_slot_tx(struct snd_soc_dai *cpu_dai, u32 tx_mask,
+				       u32 rx_mask, int slots, int slot_width)
+{
+	struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai);
+	bool tx = true;
+
+	sai->slots[tx] = slots;
+	sai->slot_width[tx] = slot_width;
+
+	return 0;
+}
+
+static int fsl_sai_set_dai_tdm_slot_rx(struct snd_soc_dai *cpu_dai, u32 tx_mask,
+				       u32 rx_mask, int slots, int slot_width)
 {
 	struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai);
+	bool tx = false;
 
-	sai->slots = slots;
-	sai->slot_width = slot_width;
+	sai->slots[tx] = slots;
+	sai->slot_width[tx] = slot_width;
 
 	return 0;
 }
 
+static int fsl_sai_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask,
+				    u32 rx_mask, int slots, int slot_width)
+{
+	int ret;
+
+	ret = fsl_sai_set_dai_tdm_slot_tx(cpu_dai, tx_mask, rx_mask, slots, slot_width);
+	if (ret)
+		return ret;
+
+	return fsl_sai_set_dai_tdm_slot_rx(cpu_dai, tx_mask, rx_mask, slots, slot_width);
+}
+
 static int fsl_sai_xlate_tdm_slot_mask(unsigned int slots,
 				       unsigned int *tx_mask, unsigned int *rx_mask)
 {
@@ -548,11 +573,11 @@  static int fsl_sai_hw_params(struct snd_pcm_substream *substream,
 	u32 watermark;
 	int ret, i;
 
-	if (sai->slot_width)
-		slot_width = sai->slot_width;
+	if (sai->slot_width[tx])
+		slot_width = sai->slot_width[tx];
 
-	if (sai->slots)
-		slots = sai->slots;
+	if (sai->slots[tx])
+		slots = sai->slots[tx];
 	else if (sai->bclk_ratio)
 		slots = sai->bclk_ratio / slot_width;
 
@@ -939,7 +964,7 @@  static const struct snd_soc_dai_ops fsl_sai_pcm_dai_tx_ops = {
 	.set_bclk_ratio	= fsl_sai_set_dai_bclk_ratio,
 	.set_sysclk	= fsl_sai_set_dai_sysclk,
 	.set_fmt	= fsl_sai_set_dai_fmt_tx,
-	.set_tdm_slot	= fsl_sai_set_dai_tdm_slot,
+	.set_tdm_slot	= fsl_sai_set_dai_tdm_slot_tx,
 	.xlate_tdm_slot_mask = fsl_sai_xlate_tdm_slot_mask,
 	.hw_params	= fsl_sai_hw_params,
 	.hw_free	= fsl_sai_hw_free,
@@ -952,7 +977,7 @@  static const struct snd_soc_dai_ops fsl_sai_pcm_dai_rx_ops = {
 	.set_bclk_ratio	= fsl_sai_set_dai_bclk_ratio,
 	.set_sysclk	= fsl_sai_set_dai_sysclk,
 	.set_fmt	= fsl_sai_set_dai_fmt_rx,
-	.set_tdm_slot	= fsl_sai_set_dai_tdm_slot,
+	.set_tdm_slot	= fsl_sai_set_dai_tdm_slot_rx,
 	.xlate_tdm_slot_mask = fsl_sai_xlate_tdm_slot_mask,
 	.hw_params	= fsl_sai_hw_params,
 	.hw_free	= fsl_sai_hw_free,
diff --git a/sound/soc/fsl/fsl_sai.h b/sound/soc/fsl/fsl_sai.h
index 3f9357da0d8f..6c917f79c6b0 100644
--- a/sound/soc/fsl/fsl_sai.h
+++ b/sound/soc/fsl/fsl_sai.h
@@ -296,8 +296,8 @@  struct fsl_sai {
 
 	unsigned int mclk_id[2];
 	unsigned int mclk_streams;
-	unsigned int slots;
-	unsigned int slot_width;
+	unsigned int slots[2];
+	unsigned int slot_width[2];
 	unsigned int bclk_ratio;
 
 	const struct fsl_sai_soc_data *soc_data;