linux-kernel - [PATCH] ASoC: fsl_asrc_dma: enable dual fifo for ASRC P2P

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Message-Id: <1653015960-15474-1-git-send-email-shengjiu.wang@nxp.com>
Date:   Fri, 20 May 2022 11:06:00 +0800
From:   Shengjiu Wang <shengjiu.wang@....com>
To:     nicoleotsuka@...il.com, Xiubo.Lee@...il.com, festevam@...il.com,
        shengjiu.wang@...il.com, lgirdwood@...il.com, broonie@...nel.org,
        perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ASoC: fsl_asrc_dma: enable dual fifo for ASRC P2P

The SSI and SPDIF has dual fifos, enhance P2P for these
case with using the sdma_peripheral_config struct

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 sound/soc/fsl/fsl_asrc_dma.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/sound/soc/fsl/fsl_asrc_dma.c b/sound/soc/fsl/fsl_asrc_dma.c
index 5038faf035cb..aaf7993935b7 100644
--- a/sound/soc/fsl/fsl_asrc_dma.c
+++ b/sound/soc/fsl/fsl_asrc_dma.c
@@ -129,6 +129,7 @@ static int fsl_asrc_dma_hw_params(struct snd_soc_component *component,
 				  struct snd_pcm_hw_params *params)
 {
 	enum dma_slave_buswidth buswidth = DMA_SLAVE_BUSWIDTH_2_BYTES;
+	enum sdma_peripheral_type be_peripheral_type = IMX_DMATYPE_SSI;
 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 	struct snd_dmaengine_dai_dma_data *dma_params_fe = NULL;
@@ -139,6 +140,7 @@ static int fsl_asrc_dma_hw_params(struct snd_soc_component *component,
 	struct snd_soc_component *component_be = NULL;
 	struct fsl_asrc *asrc = pair->asrc;
 	struct dma_slave_config config_fe, config_be;
+	struct sdma_peripheral_config audio_config;
 	enum asrc_pair_index index = pair->index;
 	struct device *dev = component->dev;
 	struct device_node *of_dma_node;
@@ -221,6 +223,7 @@ static int fsl_asrc_dma_hw_params(struct snd_soc_component *component,
 		/* Get DMA request of Back-End */
 		tmp_data = tmp_chan->private;
 		pair->dma_data.dma_request = tmp_data->dma_request;
+		be_peripheral_type = tmp_data->peripheral_type;
 		if (!be_chan)
 			dma_release_channel(tmp_chan);
 
@@ -268,6 +271,17 @@ static int fsl_asrc_dma_hw_params(struct snd_soc_component *component,
 	config_be.dst_addr_width = buswidth;
 	config_be.dst_maxburst = dma_params_be->maxburst;
 
+	memset(&audio_config, 0, sizeof(audio_config));
+	config_be.peripheral_config = &audio_config;
+	config_be.peripheral_size  = sizeof(audio_config);
+
+	if (tx && (be_peripheral_type == IMX_DMATYPE_SSI_DUAL ||
+		   be_peripheral_type == IMX_DMATYPE_SPDIF))
+		audio_config.n_fifos_dst = 2;
+	if (!tx && (be_peripheral_type == IMX_DMATYPE_SSI_DUAL ||
+		    be_peripheral_type == IMX_DMATYPE_SPDIF))
+		audio_config.n_fifos_src = 2;
+
 	if (tx) {
 		config_be.src_addr = asrc->paddr + asrc->get_fifo_addr(OUT, index);
 		config_be.dst_addr = dma_params_be->addr;
-- 
2.17.1