ENGR00283079-1 ASoC: fsl: Implement different DMA buffer sizes

Each CPU DAI driver has its own defined DMA buffer size, so this patch just
drops the original one that uses a fixed size for all drivers and implements
a different DMA buffer size to each driver.

Acked-by: Wang Shengjiu <b02247@freescale.com>
Signed-off-by: Nicolin Chen <b42378@freescale.com>
(cherry picked from commit d2589c6bcdfbcac420999e15d36ecd48a7df2742)

7 files changed, 28 insertions, 10 deletions

diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c
index f13fe1998a98..878a24de6e8a 100644
--- a/sound/soc/fsl/fsl_esai.c
+++ b/sound/soc/fsl/fsl_esai.c
@@ -853,7 +853,7 @@ 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);
 
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index faa049797897..4d93aadd72f4 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -1,7 +1,7 @@
 /*
  * Freescale ALSA SoC Digital Audio Interface (SAI) driver.
  *
- * Copyright 2012-2013 Freescale Semiconductor, Inc.
+ * Copyright 2012-2014 Freescale Semiconductor, Inc.
  *
  * This program is free software, you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -634,7 +634,7 @@ 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,
 				SND_DMAENGINE_PCM_FLAG_NO_RESIDUE);
diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c
index 42c14d604851..528fe864c151 100644
--- a/sound/soc/fsl/fsl_spdif.c
+++ b/sound/soc/fsl/fsl_spdif.c
@@ -1273,7 +1273,7 @@ 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);
 
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 0ccc9ebcce55..44035f640f29 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -1238,7 +1238,7 @@ 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;
 	}
diff --git a/sound/soc/fsl/imx-pcm-dma.c b/sound/soc/fsl/imx-pcm-dma.c
index 1101283a3f65..1fc01ed3279d 100644
--- a/sound/soc/fsl/imx-pcm-dma.c
+++ b/sound/soc/fsl/imx-pcm-dma.c
@@ -55,10 +55,27 @@ static const struct snd_dmaengine_pcm_config imx_dmaengine_pcm_config = {
 	.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);
diff --git a/sound/soc/fsl/imx-pcm.h b/sound/soc/fsl/imx-pcm.h
index 703fe3424430..4170e80a9c8e 100644
--- a/sound/soc/fsl/imx-pcm.h
+++ b/sound/soc/fsl/imx-pcm.h
@@ -20,6 +20,7 @@
  */
 #define IMX_DEFAULT_DMABUF_SIZE (256 * 1024)
 #define IMX_SSI_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)
 #define IMX_ASRC_DMABUF_SIZE	(256 * 1024)
@@ -43,9 +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;
 }
diff --git a/sound/soc/fsl/imx-ssi.c b/sound/soc/fsl/imx-ssi.c
index df552fa1aa65..4c37368464a6 100644
--- a/sound/soc/fsl/imx-ssi.c
+++ b/sound/soc/fsl/imx-ssi.c
@@ -602,7 +602,7 @@ 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;