diff options
Diffstat (limited to 'sound/soc/fsl/imx-pcm.h')
| -rw-r--r-- | sound/soc/fsl/imx-pcm.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/sound/soc/fsl/imx-pcm.h b/sound/soc/fsl/imx-pcm.h new file mode 100644 index 00000000..b7fa0d75 --- /dev/null +++ b/sound/soc/fsl/imx-pcm.h @@ -0,0 +1,63 @@ +/* + * Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de> + * + * This code is based on code copyrighted by Freescale, + * Liam Girdwood, Javier Martin and probably others. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#ifndef _IMX_PCM_H +#define _IMX_PCM_H + +#include <linux/platform_data/dma-imx.h> + +/* + * Do not change this as the FIQ handler depends on this size + */ +#define IMX_SSI_DMABUF_SIZE (64 * 1024) + +static inline void +imx_pcm_dma_params_init_data(struct imx_dma_data *dma_data, + int dma, bool shared) +{ + dma_data->dma_request = dma; + dma_data->priority = DMA_PRIO_HIGH; + if (shared) + dma_data->peripheral_type = IMX_DMATYPE_SSI_SP; + else + dma_data->peripheral_type = IMX_DMATYPE_SSI; +} + +int snd_imx_pcm_mmap(struct snd_pcm_substream *substream, + struct vm_area_struct *vma); +int imx_pcm_new(struct snd_soc_pcm_runtime *rtd); +void imx_pcm_free(struct snd_pcm *pcm); + +#ifdef CONFIG_SND_SOC_IMX_PCM_DMA +int imx_pcm_dma_init(struct platform_device *pdev); +void imx_pcm_dma_exit(struct platform_device *pdev); +#else +static inline int imx_pcm_dma_init(struct platform_device *pdev) +{ + return -ENODEV; +} + +static inline void imx_pcm_dma_exit(struct platform_device *pdev) +{ +} +#endif + +#ifdef CONFIG_SND_SOC_IMX_PCM_FIQ +int imx_pcm_fiq_init(struct platform_device *pdev); +#else +static inline int imx_pcm_fiq_init(struct platform_device *pdev) +{ + return -ENODEV; +} +#endif + +#endif /* _IMX_PCM_H */ |