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 #define IMX_SAI_DMABUF_SIZE (64 * 1024) 21 #define IMX_SPDIF_DMABUF_SIZE (64 * 1024) 22 #define IMX_ESAI_DMABUF_SIZE (256 * 1024) 23 24 static inline void 25 imx_pcm_dma_params_init_data(struct imx_dma_data *dma_data, 26 int dma, enum sdma_peripheral_type peripheral_type) 27 { 28 dma_data->dma_request = dma; 29 dma_data->priority = DMA_PRIO_HIGH; 30 dma_data->peripheral_type = peripheral_type; 31 } 32 33 struct imx_pcm_fiq_params { 34 int irq; 35 void __iomem *base; 36 37 /* Pointer to original ssi driver to setup tx rx sizes */ 38 struct snd_dmaengine_dai_dma_data *dma_params_rx; 39 struct snd_dmaengine_dai_dma_data *dma_params_tx; 40 }; 41 42 #if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_DMA) 43 int imx_pcm_dma_init(struct platform_device *pdev, size_t size); 44 #else 45 static inline int imx_pcm_dma_init(struct platform_device *pdev, size_t size) 46 { 47 return -ENODEV; 48 } 49 #endif 50 51 #if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_FIQ) 52 int imx_pcm_fiq_init(struct platform_device *pdev, 53 struct imx_pcm_fiq_params *params); 54 void imx_pcm_fiq_exit(struct platform_device *pdev); 55 #else 56 static inline int imx_pcm_fiq_init(struct platform_device *pdev, 57 struct imx_pcm_fiq_params *params) 58 { 59 return -ENODEV; 60 } 61 62 static inline void imx_pcm_fiq_exit(struct platform_device *pdev) 63 { 64 } 65 #endif 66 67 #endif /* _IMX_PCM_H */ 68