[PATCH 3/3] ASoC: fsl_micfil: Add support when using eDMA
From: Chancel Liu <hidden>
Date: 2022-10-28 08:28:56
Also in:
alsa-devel, linux-devicetree, lkml
Subsystem:
freescale soc sound drivers, sound, sound - soc layer / dynamic audio power management (asoc), the rest · Maintainers:
Shengjiu Wang, Xiubo Li, Jaroslav Kysela, Takashi Iwai, Liam Girdwood, Mark Brown, Linus Torvalds
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 <redacted> --- sound/soc/fsl/fsl_micfil.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c
index b8a9504441df..22e75c14cac4 100644
--- 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; }
--
2.25.1