ASoC: fsl: Add dedicated DMA buffer size for each cpu dai

As the ssi is not the only cpu dai, there are esai, spdif, sai.
and imx_pcm_dma can be used by all of them. Especially ESAI need
a larger DMA buffer size. So Add dedicated DMA buffer for each cpu
dai.

Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Acked-by: Timur Tabi <timur@tabi.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/fsl/fsl_esai.c

@@ -839,7 +839,7 @@ static int fsl_esai_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ret = imx_pcm_dma_init(pdev);
+	ret = imx_pcm_dma_init(pdev, IMX_ESAI_DMABUF_SIZE);
 	if (ret)
 		dev_err(&pdev->dev, "failed to init imx pcm dma: %d\n", ret);
 

sound/soc/fsl/fsl_sai.c

@@ -791,7 +791,7 @@ static int fsl_sai_probe(struct platform_device *pdev)
 		return ret;
 
 	if (sai->sai_on_imx)
-		return imx_pcm_dma_init(pdev);
+		return imx_pcm_dma_init(pdev, IMX_SAI_DMABUF_SIZE);
 	else
 		return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
 }

sound/soc/fsl/fsl_spdif.c

@@ -1255,7 +1255,7 @@ static int fsl_spdif_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ret = imx_pcm_dma_init(pdev);
+	ret = imx_pcm_dma_init(pdev, IMX_SPDIF_DMABUF_SIZE);
 	if (ret)
 		dev_err(&pdev->dev, "imx_pcm_dma_init failed: %d\n", ret);
 

sound/soc/fsl/fsl_ssi.c

@@ -1257,7 +1257,7 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev,
 		if (ret)
 			goto error_pcm;
 	} else {
-		ret = imx_pcm_dma_init(pdev);
+		ret = imx_pcm_dma_init(pdev, IMX_SSI_DMABUF_SIZE);
 		if (ret)
 			goto error_pcm;
 	}

sound/soc/fsl/imx-pcm-dma.c

@@ -40,7 +40,7 @@ static const struct snd_pcm_hardware imx_pcm_hardware = {
 		SNDRV_PCM_INFO_MMAP_VALID |
 		SNDRV_PCM_INFO_PAUSE |
 		SNDRV_PCM_INFO_RESUME,
-	.buffer_bytes_max = IMX_SSI_DMABUF_SIZE,
+	.buffer_bytes_max = IMX_DEFAULT_DMABUF_SIZE,
 	.period_bytes_min = 128,
 	.period_bytes_max = 65535, /* Limited by SDMA engine */
 	.periods_min = 2,
@@ -52,13 +52,30 @@ static const struct snd_dmaengine_pcm_config imx_dmaengine_pcm_config = {
 	.pcm_hardware = &imx_pcm_hardware,
 	.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
 	.compat_filter_fn = filter,
-	.prealloc_buffer_size = IMX_SSI_DMABUF_SIZE,
+	.prealloc_buffer_size = IMX_DEFAULT_DMABUF_SIZE,
 };
 
-int imx_pcm_dma_init(struct platform_device *pdev)
+int imx_pcm_dma_init(struct platform_device *pdev, size_t size)
 {
+	struct snd_dmaengine_pcm_config *config;
+	struct snd_pcm_hardware *pcm_hardware;
+
+	config = devm_kzalloc(&pdev->dev,
+			sizeof(struct snd_dmaengine_pcm_config), GFP_KERNEL);
+	*config = imx_dmaengine_pcm_config;
+	if (size)
+		config->prealloc_buffer_size = size;
+
+	pcm_hardware = devm_kzalloc(&pdev->dev,
+			sizeof(struct snd_pcm_hardware), GFP_KERNEL);
+	*pcm_hardware = imx_pcm_hardware;
+	if (size)
+		pcm_hardware->buffer_bytes_max = size;
+
+	config->pcm_hardware = pcm_hardware;
+
 	return devm_snd_dmaengine_pcm_register(&pdev->dev,
-		&imx_dmaengine_pcm_config,
+		config,
 		SND_DMAENGINE_PCM_FLAG_COMPAT);
 }
 EXPORT_SYMBOL_GPL(imx_pcm_dma_init);

sound/soc/fsl/imx-pcm.h

@@ -20,6 +20,11 @@
  */
 #define IMX_SSI_DMABUF_SIZE	(64 * 1024)
 
+#define IMX_DEFAULT_DMABUF_SIZE	(64 * 1024)
+#define IMX_SAI_DMABUF_SIZE	(64 * 1024)
+#define IMX_SPDIF_DMABUF_SIZE	(64 * 1024)
+#define IMX_ESAI_DMABUF_SIZE	(256 * 1024)
+
 static inline void
 imx_pcm_dma_params_init_data(struct imx_dma_data *dma_data,
 	int dma, enum sdma_peripheral_type peripheral_type)
@@ -39,9 +44,9 @@ struct imx_pcm_fiq_params {
 };
 
 #if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_DMA)
-int imx_pcm_dma_init(struct platform_device *pdev);
+int imx_pcm_dma_init(struct platform_device *pdev, size_t size);
 #else
-static inline int imx_pcm_dma_init(struct platform_device *pdev)
+static inline int imx_pcm_dma_init(struct platform_device *pdev, size_t size)
 {
 	return -ENODEV;
 }

sound/soc/fsl/imx-ssi.c

@@ -603,7 +603,7 @@ static int imx_ssi_probe(struct platform_device *pdev)
 	ssi->fiq_params.dma_params_tx = &ssi->dma_params_tx;
 
 	ssi->fiq_init = imx_pcm_fiq_init(pdev, &ssi->fiq_params);
-	ssi->dma_init = imx_pcm_dma_init(pdev);
+	ssi->dma_init = imx_pcm_dma_init(pdev, IMX_SSI_DMABUF_SIZE);
 
 	if (ssi->fiq_init && ssi->dma_init) {
 		ret = ssi->fiq_init;