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 28 static inline void 29 imx_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 37 struct 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) 47 int imx_pcm_dma_init(struct platform_device *pdev, size_t size); 48 #else 49 static 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) 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