LXR linux/sound/soc/fsl/imx-pcm.h

   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#define IMX_DEFAULT_DMABUF_SIZE (64 * 1024)
  24#define IMX_SAI_DMABUF_SIZE     (64 * 1024)
  25#define IMX_SPDIF_DMABUF_SIZE   (64 * 1024)
  26#define IMX_ESAI_DMABUF_SIZE    (256 * 1024)
  27
  28static inline void
  29imx_pcm_dma_params_init_data(struct imx_dma_data *dma_data,
  30        int dma, enum sdma_peripheral_type peripheral_type)
  31{
  32        dma_data->dma_request = dma;
  33        dma_data->priority = DMA_PRIO_HIGH;
  34        dma_data->peripheral_type = peripheral_type;
  35}
  36
  37struct imx_pcm_fiq_params {
  38        int irq;
  39        void __iomem *base;
  40
  41        /* Pointer to original ssi driver to setup tx rx sizes */
  42        struct snd_dmaengine_dai_dma_data *dma_params_rx;
  43        struct snd_dmaengine_dai_dma_data *dma_params_tx;
  44};
  45
  46#if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_DMA)
  47int imx_pcm_dma_init(struct platform_device *pdev, size_t size);
  48#else
  49static inline int imx_pcm_dma_init(struct platform_device *pdev, size_t size)
  50{
  51        return -ENODEV;
  52}
  53#endif
  54
  55#if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_FIQ)
  56int imx_pcm_fiq_init(struct platform_device *pdev,
  57                struct imx_pcm_fiq_params *params);
  58void imx_pcm_fiq_exit(struct platform_device *pdev);
  59#else
  60static inline int imx_pcm_fiq_init(struct platform_device *pdev,
  61                struct imx_pcm_fiq_params *params)
  62{
  63        return -ENODEV;
  64}
  65
  66static inline void imx_pcm_fiq_exit(struct platform_device *pdev)
  67{
  68}
  69#endif
  70
  71#endif /* _IMX_PCM_H */
  72