sound/soc/fsl/imx-pcm.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
   4  *
   5  * This code is based on code copyrighted by Freescale,
   6  * Liam Girdwood, Javier Martin and probably others.
   7  */
   8
   9 #ifndef _IMX_PCM_H
  10 #define _IMX_PCM_H
  11
  12 #include <linux/dma/imx-dma.h>
  13
  14 /*
  15  * Do not change this as the FIQ handler depends on this size
  16  */
  17 #define IMX_SSI_DMABUF_SIZE     (64 * 1024)
  18
  19 #define IMX_DEFAULT_DMABUF_SIZE (64 * 1024)
  20
  21 struct imx_pcm_fiq_params {
  22         int irq;
  23         void __iomem *base;
  24
  25         /* Pointer to original ssi driver to setup tx rx sizes */
  26         struct snd_dmaengine_dai_dma_data *dma_params_rx;
  27         struct snd_dmaengine_dai_dma_data *dma_params_tx;
  28 };
  29
  30 #if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_DMA)
  31 int imx_pcm_dma_init(struct platform_device *pdev);
  32 #else
  33 static inline int imx_pcm_dma_init(struct platform_device *pdev)
  34 {
  35         return -ENODEV;
  36 }
  37 #endif
  38
  39 #if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_FIQ)
  40 int imx_pcm_fiq_init(struct platform_device *pdev,
  41                 struct imx_pcm_fiq_params *params);
  42 void imx_pcm_fiq_exit(struct platform_device *pdev);
  43 #else
  44 static inline int imx_pcm_fiq_init(struct platform_device *pdev,
  45                 struct imx_pcm_fiq_params *params)
  46 {
  47         return -ENODEV;
  48 }
  49
  50 static inline void imx_pcm_fiq_exit(struct platform_device *pdev)
  51 {
  52 }
  53 #endif
  54
  55 #endif /* _IMX_PCM_H */