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

INCLUDED FROM

DEFINITIONS

1. imx_pcm_dma_params_init_data
2. imx_pcm_dma_init
3. imx_pcm_fiq_init
4. imx_pcm_fiq_exit

   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/platform_data/dma-imx.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 #define IMX_SAI_DMABUF_SIZE     (64 * 1024)
  21 #define IMX_SPDIF_DMABUF_SIZE   (64 * 1024)
  22 #define IMX_ESAI_DMABUF_SIZE    (256 * 1024)
  23 
  24 static inline void
  25 imx_pcm_dma_params_init_data(struct imx_dma_data *dma_data,
  26         int dma, enum sdma_peripheral_type peripheral_type)
  27 {
  28         dma_data->dma_request = dma;
  29         dma_data->priority = DMA_PRIO_HIGH;
  30         dma_data->peripheral_type = peripheral_type;
  31 }
  32 
  33 struct imx_pcm_fiq_params {
  34         int irq;
  35         void __iomem *base;
  36 
  37         /* Pointer to original ssi driver to setup tx rx sizes */
  38         struct snd_dmaengine_dai_dma_data *dma_params_rx;
  39         struct snd_dmaengine_dai_dma_data *dma_params_tx;
  40 };
  41 
  42 #if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_DMA)
  43 int imx_pcm_dma_init(struct platform_device *pdev, size_t size);
  44 #else
  45 static inline int imx_pcm_dma_init(struct platform_device *pdev, size_t size)
  46 {
  47         return -ENODEV;
  48 }
  49 #endif
  50 
  51 #if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_FIQ)
  52 int imx_pcm_fiq_init(struct platform_device *pdev,
  53                 struct imx_pcm_fiq_params *params);
  54 void imx_pcm_fiq_exit(struct platform_device *pdev);
  55 #else
  56 static inline int imx_pcm_fiq_init(struct platform_device *pdev,
  57                 struct imx_pcm_fiq_params *params)
  58 {
  59         return -ENODEV;
  60 }
  61 
  62 static inline void imx_pcm_fiq_exit(struct platform_device *pdev)
  63 {
  64 }
  65 #endif
  66 
  67 #endif /* _IMX_PCM_H */