imx-pcm.h

 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
21struct 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)
31int imx_pcm_dma_init(struct platform_device *pdev);
32#else
33static 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)
40int imx_pcm_fiq_init(struct platform_device *pdev,
41		struct imx_pcm_fiq_params *params);
42void imx_pcm_fiq_exit(struct platform_device *pdev);
43#else
44static inline int imx_pcm_fiq_init(struct platform_device *pdev,
45		struct imx_pcm_fiq_params *params)
46{
47	return -ENODEV;
48}
49
50static inline void imx_pcm_fiq_exit(struct platform_device *pdev)
51{
52}
53#endif
54
55#endif /* _IMX_PCM_H */