linux-stable/sound/soc/fsl/imx-pcm.h
Shengjiu Wang 0d69e0dddf 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>
2015-07-07 13:16:12 +01:00

71 lines
1.9 KiB
C

/*
* Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
*
* This code is based on code copyrighted by Freescale,
* Liam Girdwood, Javier Martin and probably others.
*
* 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
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef _IMX_PCM_H
#define _IMX_PCM_H
#include <linux/platform_data/dma-imx.h>
/*
* Do not change this as the FIQ handler depends on this size
*/
#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)
{
dma_data->dma_request = dma;
dma_data->priority = DMA_PRIO_HIGH;
dma_data->peripheral_type = peripheral_type;
}
struct imx_pcm_fiq_params {
int irq;
void __iomem *base;
/* Pointer to original ssi driver to setup tx rx sizes */
struct snd_dmaengine_dai_dma_data *dma_params_rx;
struct snd_dmaengine_dai_dma_data *dma_params_tx;
};
#if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_DMA)
int imx_pcm_dma_init(struct platform_device *pdev, size_t size);
#else
static inline int imx_pcm_dma_init(struct platform_device *pdev, size_t size)
{
return -ENODEV;
}
#endif
#if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_FIQ)
int imx_pcm_fiq_init(struct platform_device *pdev,
struct imx_pcm_fiq_params *params);
void imx_pcm_fiq_exit(struct platform_device *pdev);
#else
static inline int imx_pcm_fiq_init(struct platform_device *pdev,
struct imx_pcm_fiq_params *params)
{
return -ENODEV;
}
static inline void imx_pcm_fiq_exit(struct platform_device *pdev)
{
}
#endif
#endif /* _IMX_PCM_H */