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 */ 56