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
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