0d69e0dddf
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>
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/*
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* Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
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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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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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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/platform_data/dma-imx.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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#define IMX_SAI_DMABUF_SIZE (64 * 1024)
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#define IMX_SPDIF_DMABUF_SIZE (64 * 1024)
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#define IMX_ESAI_DMABUF_SIZE (256 * 1024)
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static inline void
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imx_pcm_dma_params_init_data(struct imx_dma_data *dma_data,
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int dma, enum sdma_peripheral_type peripheral_type)
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{
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dma_data->dma_request = dma;
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dma_data->priority = DMA_PRIO_HIGH;
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dma_data->peripheral_type = peripheral_type;
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}
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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, size_t size);
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#else
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static inline int imx_pcm_dma_init(struct platform_device *pdev, size_t size)
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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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