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