ASoC: fsl_micfil: Add support when using eDMA

On i.MX93 platform MICFIL uses eDMA. The maxburst should be set to the
number of channels in eDMA multiple FIFO mode.

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Link: https://lore.kernel.org/r/20221028082750.991822-4-chancel.liu@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c
index b8a9504..22e75c1 100644 (file)
--- a/sound/soc/fsl/fsl_micfil.c
+++ b/sound/soc/fsl/fsl_micfil.c
@@ -63,6 +63,7 @@ struct fsl_micfil_soc_data {
        unsigned int fifo_depth;
        unsigned int dataline;
        bool imx;
+       bool use_edma;
        u64  formats;
 };
 
@@ -88,6 +89,7 @@ static struct fsl_micfil_soc_data fsl_micfil_imx93 = {
        .fifo_depth = 32,
        .dataline =  0xf,
        .formats = SNDRV_PCM_FMTBIT_S32_LE,
+       .use_edma = true,
 };
 
 static const struct of_device_id fsl_micfil_dt_ids[] = {
@@ -690,6 +692,8 @@ static int fsl_micfil_hw_params(struct snd_pcm_substream *substream,
        micfil->sdmacfg.n_fifos_src = channels;
        micfil->sdmacfg.sw_done = true;
        micfil->dma_params_rx.maxburst = channels * MICFIL_DMA_MAXBURST_RX;
+       if (micfil->soc->use_edma)
+               micfil->dma_params_rx.maxburst = channels;
 
        return 0;
 }