The dai_probe() could handle some one-time configurations since they will not be changed once being configured.
Signed-off-by: Nicolin Chen nicoleotsuka@gmail.com --- sound/soc/fsl/fsl_ssi.c | 30 +++++++++++++++++------------- 1 file changed, 17 insertions(+), 13 deletions(-)
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index fd756dd..4673709 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -855,7 +855,6 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, { struct regmap *regs = ssi->regs; u32 strcr = 0, stcr, srcr, scr, mask; - u8 wm;
ssi->dai_fmt = fmt;
@@ -864,8 +863,6 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, return -EINVAL; }
- fsl_ssi_setup_regvals(ssi); - regmap_read(regs, REG_SSI_SCR, &scr); scr &= ~(SSI_SCR_SYN | SSI_SCR_I2S_MODE_MASK); /* Synchronize frame sync clock for TE to avoid data slipping */ @@ -980,16 +977,6 @@ static int _fsl_ssi_set_dai_fmt(struct device *dev, regmap_write(regs, REG_SSI_SRCR, srcr); regmap_write(regs, REG_SSI_SCR, scr);
- wm = ssi->fifo_watermark; - - regmap_write(regs, REG_SSI_SFCSR, - SSI_SFCSR_TFWM0(wm) | SSI_SFCSR_RFWM0(wm) | - SSI_SFCSR_TFWM1(wm) | SSI_SFCSR_RFWM1(wm)); - - if (ssi->use_dual_fifo) - regmap_update_bits(regs, REG_SSI_SCR, - SSI_SCR_TCH_EN, SSI_SCR_TCH_EN); - if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_AC97) fsl_ssi_setup_ac97(ssi);
@@ -1096,14 +1083,31 @@ static int fsl_ssi_trigger(struct snd_pcm_substream *substream, int cmd, return 0; }
+/** + * Set DMA data and one-time configurations + */ static int fsl_ssi_dai_probe(struct snd_soc_dai *dai) { struct fsl_ssi *ssi = snd_soc_dai_get_drvdata(dai); + u32 wm = ssi->fifo_watermark;
if (ssi->soc->imx && ssi->use_dma) snd_soc_dai_init_dma_data(dai, &ssi->dma_params_tx, &ssi->dma_params_rx);
+ /* Initialize regvals */ + fsl_ssi_setup_regvals(ssi); + + /* Set watermarks */ + regmap_write(ssi->regs, REG_SSI_SFCSR, + SSI_SFCSR_TFWM0(wm) | SSI_SFCSR_RFWM0(wm) | + SSI_SFCSR_TFWM1(wm) | SSI_SFCSR_RFWM1(wm)); + + /* Enable Dual FIFO mode */ + if (ssi->use_dual_fifo) + regmap_update_bits(ssi->regs, REG_SSI_SCR, + SSI_SCR_TCH_EN, SSI_SCR_TCH_EN); + return 0; }