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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/sound/soc/fsl/imx-pcm.h
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/* SPDX-License-Identifier: GPL-2.0+ */

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/*

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 * Copyright 2009 Sascha Hauer <[email protected]>

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 *

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 * This code is based on code copyrighted by Freescale,

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 * Liam Girdwood, Javier Martin and probably others.

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 */

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#ifndef _IMX_PCM_H

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#define _IMX_PCM_H

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#include <linux/dma/imx-dma.h>

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/*

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 * Do not change this as the FIQ handler depends on this size

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 */

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#define IMX_SSI_DMABUF_SIZE	(64 * 1024)

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#define IMX_DEFAULT_DMABUF_SIZE	(64 * 1024)

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struct imx_pcm_fiq_params {

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	int irq;

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	void __iomem *base;

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	/* Pointer to original ssi driver to setup tx rx sizes */

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	struct snd_dmaengine_dai_dma_data *dma_params_rx;

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	struct snd_dmaengine_dai_dma_data *dma_params_tx;

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};

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#if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_DMA)

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int imx_pcm_dma_init(struct platform_device *pdev);

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#else

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static inline int imx_pcm_dma_init(struct platform_device *pdev)

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{

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	return -ENODEV;

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}

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#endif

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#if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_FIQ)

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int imx_pcm_fiq_init(struct platform_device *pdev,

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		struct imx_pcm_fiq_params *params);

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void imx_pcm_fiq_exit(struct platform_device *pdev);

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#else

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static inline int imx_pcm_fiq_init(struct platform_device *pdev,

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		struct imx_pcm_fiq_params *params)

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{

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	return -ENODEV;

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}

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static inline void imx_pcm_fiq_exit(struct platform_device *pdev)

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{

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}

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#endif

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#endif /* _IMX_PCM_H */

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