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Linux/sound/soc/fsl/imx-pcm.h

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  1 /*
  2  * Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
  3  *
  4  * This code is based on code copyrighted by Freescale,
  5  * Liam Girdwood, Javier Martin and probably others.
  6  *
  7  * This program is free software; you can redistribute  it and/or modify it
  8  * under  the terms of  the GNU General  Public License as published by the
  9  * Free Software Foundation;  either version 2 of the  License, or (at your
 10  * option) any later version.
 11  */
 12 
 13 #ifndef _IMX_PCM_H
 14 #define _IMX_PCM_H
 15 
 16 #include <linux/platform_data/dma-imx.h>
 17 
 18 /*
 19  * Do not change this as the FIQ handler depends on this size
 20  */
 21 #define IMX_SSI_DMABUF_SIZE     (64 * 1024)
 22 
 23 static inline void
 24 imx_pcm_dma_params_init_data(struct imx_dma_data *dma_data,
 25         int dma, bool shared)
 26 {
 27         dma_data->dma_request = dma;
 28         dma_data->priority = DMA_PRIO_HIGH;
 29         if (shared)
 30                 dma_data->peripheral_type = IMX_DMATYPE_SSI_SP;
 31         else
 32                 dma_data->peripheral_type = IMX_DMATYPE_SSI;
 33 }
 34 
 35 int snd_imx_pcm_mmap(struct snd_pcm_substream *substream,
 36                      struct vm_area_struct *vma);
 37 int imx_pcm_new(struct snd_soc_pcm_runtime *rtd);
 38 void imx_pcm_free(struct snd_pcm *pcm);
 39 
 40 #ifdef CONFIG_SND_SOC_IMX_PCM_DMA
 41 int imx_pcm_dma_init(struct platform_device *pdev);
 42 void imx_pcm_dma_exit(struct platform_device *pdev);
 43 #else
 44 static inline int imx_pcm_dma_init(struct platform_device *pdev)
 45 {
 46         return -ENODEV;
 47 }
 48 
 49 static inline void imx_pcm_dma_exit(struct platform_device *pdev)
 50 {
 51 }
 52 #endif
 53 
 54 #ifdef CONFIG_SND_SOC_IMX_PCM_FIQ
 55 int imx_pcm_fiq_init(struct platform_device *pdev);
 56 #else
 57 static inline int imx_pcm_fiq_init(struct platform_device *pdev)
 58 {
 59         return -ENODEV;
 60 }
 61 #endif
 62 
 63 #endif /* _IMX_PCM_H */
 64 

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