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