[PATCH] ASoC: fsl_sai: Fix value of FSL_SAI_CR1_RFW_MASK

[Shengjiu Wang]

The fifo_depth is 64 on i.MX8QM/i.MX8QXP, 128 on i.MX8MQ, 16 on
i.MX7ULP.

Original FSL_SAI_CR1_RFW_MASK value 0x1F is not suitable for
these platform, the FIFO watermark mask should be updated
according to the fifo_depth.

Fixes: a860fac42097 ("ASoC: fsl_sai: Add support for imx7ulp/imx8mq")
Signed-off-by: Shengjiu Wang <shengjiu.wang at nxp.com>
---
 sound/soc/fsl/fsl_sai.c | 5 +++--
 sound/soc/fsl/fsl_sai.h | 2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index a22562f2df47..cdff739924e2 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -680,10 +680,11 @@ static int fsl_sai_dai_probe(struct snd_soc_dai *cpu_dai)
 	regmap_write(sai->regmap, FSL_SAI_RCSR(ofs), 0);
 
 	regmap_update_bits(sai->regmap, FSL_SAI_TCR1(ofs),
-			   FSL_SAI_CR1_RFW_MASK,
+			   FSL_SAI_CR1_RFW_MASK(sai->soc_data->fifo_depth),
 			   sai->soc_data->fifo_depth - FSL_SAI_MAXBURST_TX);
 	regmap_update_bits(sai->regmap, FSL_SAI_RCR1(ofs),
-			   FSL_SAI_CR1_RFW_MASK, FSL_SAI_MAXBURST_RX - 1);
+			   FSL_SAI_CR1_RFW_MASK(sai->soc_data->fifo_depth),
+			   FSL_SAI_MAXBURST_RX - 1);
 
 	snd_soc_dai_init_dma_data(cpu_dai, &sai->dma_params_tx,
 				&sai->dma_params_rx);
diff --git a/sound/soc/fsl/fsl_sai.h b/sound/soc/fsl/fsl_sai.h
index 76b15deea80c..6aba7d28f5f3 100644
--- a/sound/soc/fsl/fsl_sai.h
+++ b/sound/soc/fsl/fsl_sai.h
@@ -94,7 +94,7 @@
 #define FSL_SAI_CSR_FRDE	BIT(0)
 
 /* SAI Transmit and Receive Configuration 1 Register */
-#define FSL_SAI_CR1_RFW_MASK	0x1f
+#define FSL_SAI_CR1_RFW_MASK(x)	((x) - 1)
 
 /* SAI Transmit and Receive Configuration 2 Register */
 #define FSL_SAI_CR2_SYNC	BIT(30)
-- 
2.27.0