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