diff options
| author | Shawn Guo <shawn.guo@linaro.org> | 2012-03-05 22:30:55 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-03-06 00:03:08 +0000 |
| commit | 4762fbab0b1cf1d4f3e02b78351dc6fa59ca564e (patch) | |
| tree | 08c59b48b0b3f7e24f84820683f9961e5664da90 /sound/soc/imx/imx-pcm.h | |
| parent | af4872fb39301bbe196d0778f80d22ec51d8884b (diff) | |
| download | linux-4762fbab0b1cf1d4f3e02b78351dc6fa59ca564e.tar.gz linux-4762fbab0b1cf1d4f3e02b78351dc6fa59ca564e.tar.xz | |
ASoC: imx: separate imx-pcm bits from imx-ssi driver
Currently the imx-ssi.c[h] accommodates the imx-pcm common bits which
are shared between imx-pcm-dma-mx2 and imx-pcm-fiq drivers. It assumes
that imx-pcm-dma-mx2 and imx-pcm-fiq will always be used together with
imx-ssi driver. However this becomes untrue when we see that driver
sound/soc/fsl/fsl_ssi could possibly work with imx-pcm-dma-mx2 too.
The patch moves the imx-pcm common bits from imx-ssi.c[h] into new
files imx-pcm.c[h], and let imx-pcm-dma-mx2 and imx-pcm-fiq drivers
build it in, so that imx-pcm-dma-mx2 can work with no dependency on
imx-ssi driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/imx/imx-pcm.h')
| -rw-r--r-- | sound/soc/imx/imx-pcm.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/sound/soc/imx/imx-pcm.h b/sound/soc/imx/imx-pcm.h new file mode 100644 index 000000000000..b5f5c3acf34d --- /dev/null +++ b/sound/soc/imx/imx-pcm.h @@ -0,0 +1,32 @@ +/* + * 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 + +/* + * Do not change this as the FIQ handler depends on this size + */ +#define IMX_SSI_DMABUF_SIZE (64 * 1024) + +struct imx_pcm_dma_params { + int dma; + unsigned long dma_addr; + int burstsize; +}; + +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); + +#endif /* _IMX_PCM_H */ |