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 --- sound/soc/imx/Kconfig | 5 ++ sound/soc/imx/Makefile | 10 ++-- sound/soc/imx/imx-pcm-dma-mx2.c | 2 +- sound/soc/imx/imx-pcm.c | 105 +++++++++++++++++++++++++++++++++++++++ sound/soc/imx/imx-pcm.h | 32 ++++++++++++ sound/soc/imx/imx-ssi.c | 88 -------------------------------- sound/soc/imx/imx-ssi.h | 16 +------ 7 files changed, 149 insertions(+), 109 deletions(-) create mode 100644 sound/soc/imx/imx-pcm.c create mode 100644 sound/soc/imx/imx-pcm.h
diff --git a/sound/soc/imx/Kconfig b/sound/soc/imx/Kconfig index bca5d34..863a6b4 100644 --- a/sound/soc/imx/Kconfig +++ b/sound/soc/imx/Kconfig @@ -8,12 +8,17 @@ menuconfig SND_IMX_SOC
if SND_IMX_SOC
+config SND_SOC_IMX_PCM + tristate + config SND_MXC_SOC_FIQ tristate select FIQ + select SND_SOC_IMX_PCM
config SND_MXC_SOC_MX2 tristate + select SND_SOC_IMX_PCM
config SND_MXC_SOC_WM1133_EV1 tristate "Audio on the the i.MX31ADS with WM1133-EV1 fitted" diff --git a/sound/soc/imx/Makefile b/sound/soc/imx/Makefile index d6d609b..303bc05 100644 --- a/sound/soc/imx/Makefile +++ b/sound/soc/imx/Makefile @@ -1,11 +1,11 @@ # i.MX Platform Support snd-soc-imx-objs := imx-ssi.o -snd-soc-imx-fiq-objs := imx-pcm-fiq.o -snd-soc-imx-mx2-objs := imx-pcm-dma-mx2.o - obj-$(CONFIG_SND_IMX_SOC) += snd-soc-imx.o -obj-$(CONFIG_SND_MXC_SOC_FIQ) += snd-soc-imx-fiq.o -obj-$(CONFIG_SND_MXC_SOC_MX2) += snd-soc-imx-mx2.o + +obj-$(CONFIG_SND_SOC_IMX_PCM) += snd-soc-imx-pcm.o +snd-soc-imx-pcm-y := imx-pcm.o +snd-soc-imx-pcm-$(CONFIG_SND_MXC_SOC_FIQ) += imx-pcm-fiq.o +snd-soc-imx-pcm-$(CONFIG_SND_MXC_SOC_MX2) += imx-pcm-dma-mx2.o
# i.MX Machine Support snd-soc-eukrea-tlv320-objs := eukrea-tlv320.o diff --git a/sound/soc/imx/imx-pcm-dma-mx2.c b/sound/soc/imx/imx-pcm-dma-mx2.c index 1737141..e2d7287 100644 --- a/sound/soc/imx/imx-pcm-dma-mx2.c +++ b/sound/soc/imx/imx-pcm-dma-mx2.c @@ -30,7 +30,7 @@
#include <mach/dma.h>
-#include "imx-ssi.h" +#include "imx-pcm.h"
struct imx_pcm_runtime_data { int period_bytes; diff --git a/sound/soc/imx/imx-pcm.c b/sound/soc/imx/imx-pcm.c new file mode 100644 index 0000000..93dc360 --- /dev/null +++ b/sound/soc/imx/imx-pcm.c @@ -0,0 +1,105 @@ +/* + * 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. + */ + +#include <linux/dma-mapping.h> +#include <linux/module.h> +#include <sound/pcm.h> +#include <sound/soc.h> +#include "imx-pcm.h" + +int snd_imx_pcm_mmap(struct snd_pcm_substream *substream, + struct vm_area_struct *vma) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + int ret; + + ret = dma_mmap_writecombine(substream->pcm->card->dev, vma, + runtime->dma_area, runtime->dma_addr, runtime->dma_bytes); + + pr_debug("%s: ret: %d %p 0x%08x 0x%08x\n", __func__, ret, + runtime->dma_area, + runtime->dma_addr, + runtime->dma_bytes); + return ret; +} +EXPORT_SYMBOL_GPL(snd_imx_pcm_mmap); + +static int imx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream) +{ + struct snd_pcm_substream *substream = pcm->streams[stream].substream; + struct snd_dma_buffer *buf = &substream->dma_buffer; + size_t size = IMX_SSI_DMABUF_SIZE; + + buf->dev.type = SNDRV_DMA_TYPE_DEV; + buf->dev.dev = pcm->card->dev; + buf->private_data = NULL; + buf->area = dma_alloc_writecombine(pcm->card->dev, size, + &buf->addr, GFP_KERNEL); + if (!buf->area) + return -ENOMEM; + buf->bytes = size; + + return 0; +} + +static u64 imx_pcm_dmamask = DMA_BIT_MASK(32); + +int imx_pcm_new(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_card *card = rtd->card->snd_card; + struct snd_pcm *pcm = rtd->pcm; + int ret = 0; + + if (!card->dev->dma_mask) + card->dev->dma_mask = &imx_pcm_dmamask; + if (!card->dev->coherent_dma_mask) + card->dev->coherent_dma_mask = DMA_BIT_MASK(32); + if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) { + ret = imx_pcm_preallocate_dma_buffer(pcm, + SNDRV_PCM_STREAM_PLAYBACK); + if (ret) + goto out; + } + + if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) { + ret = imx_pcm_preallocate_dma_buffer(pcm, + SNDRV_PCM_STREAM_CAPTURE); + if (ret) + goto out; + } + +out: + return ret; +} +EXPORT_SYMBOL_GPL(imx_pcm_new); + +void imx_pcm_free(struct snd_pcm *pcm) +{ + struct snd_pcm_substream *substream; + struct snd_dma_buffer *buf; + int stream; + + for (stream = 0; stream < 2; stream++) { + substream = pcm->streams[stream].substream; + if (!substream) + continue; + + buf = &substream->dma_buffer; + if (!buf->area) + continue; + + dma_free_writecombine(pcm->card->dev, buf->bytes, + buf->area, buf->addr); + buf->area = NULL; + } +} +EXPORT_SYMBOL_GPL(imx_pcm_free); diff --git a/sound/soc/imx/imx-pcm.h b/sound/soc/imx/imx-pcm.h new file mode 100644 index 0000000..b5f5c3a --- /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 */ diff --git a/sound/soc/imx/imx-ssi.c b/sound/soc/imx/imx-ssi.c index 25c6231..9203cdd 100644 --- a/sound/soc/imx/imx-ssi.c +++ b/sound/soc/imx/imx-ssi.c @@ -363,94 +363,6 @@ static const struct snd_soc_dai_ops imx_ssi_pcm_dai_ops = { .trigger = imx_ssi_trigger, };
-int snd_imx_pcm_mmap(struct snd_pcm_substream *substream, - struct vm_area_struct *vma) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - int ret; - - ret = dma_mmap_writecombine(substream->pcm->card->dev, vma, - runtime->dma_area, runtime->dma_addr, runtime->dma_bytes); - - pr_debug("%s: ret: %d %p 0x%08x 0x%08x\n", __func__, ret, - runtime->dma_area, - runtime->dma_addr, - runtime->dma_bytes); - return ret; -} -EXPORT_SYMBOL_GPL(snd_imx_pcm_mmap); - -static int imx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream) -{ - struct snd_pcm_substream *substream = pcm->streams[stream].substream; - struct snd_dma_buffer *buf = &substream->dma_buffer; - size_t size = IMX_SSI_DMABUF_SIZE; - - buf->dev.type = SNDRV_DMA_TYPE_DEV; - buf->dev.dev = pcm->card->dev; - buf->private_data = NULL; - buf->area = dma_alloc_writecombine(pcm->card->dev, size, - &buf->addr, GFP_KERNEL); - if (!buf->area) - return -ENOMEM; - buf->bytes = size; - - return 0; -} - -static u64 imx_pcm_dmamask = DMA_BIT_MASK(32); - -int imx_pcm_new(struct snd_soc_pcm_runtime *rtd) -{ - struct snd_card *card = rtd->card->snd_card; - struct snd_pcm *pcm = rtd->pcm; - int ret = 0; - - if (!card->dev->dma_mask) - card->dev->dma_mask = &imx_pcm_dmamask; - if (!card->dev->coherent_dma_mask) - card->dev->coherent_dma_mask = DMA_BIT_MASK(32); - if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) { - ret = imx_pcm_preallocate_dma_buffer(pcm, - SNDRV_PCM_STREAM_PLAYBACK); - if (ret) - goto out; - } - - if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) { - ret = imx_pcm_preallocate_dma_buffer(pcm, - SNDRV_PCM_STREAM_CAPTURE); - if (ret) - goto out; - } - -out: - return ret; -} -EXPORT_SYMBOL_GPL(imx_pcm_new); - -void imx_pcm_free(struct snd_pcm *pcm) -{ - struct snd_pcm_substream *substream; - struct snd_dma_buffer *buf; - int stream; - - for (stream = 0; stream < 2; stream++) { - substream = pcm->streams[stream].substream; - if (!substream) - continue; - - buf = &substream->dma_buffer; - if (!buf->area) - continue; - - dma_free_writecombine(pcm->card->dev, buf->bytes, - buf->area, buf->addr); - buf->area = NULL; - } -} -EXPORT_SYMBOL_GPL(imx_pcm_free); - static int imx_ssi_dai_probe(struct snd_soc_dai *dai) { struct imx_ssi *ssi = dev_get_drvdata(dai->dev); diff --git a/sound/soc/imx/imx-ssi.h b/sound/soc/imx/imx-ssi.h index 1072dfb..5744e86 100644 --- a/sound/soc/imx/imx-ssi.h +++ b/sound/soc/imx/imx-ssi.h @@ -187,12 +187,7 @@
#include <linux/dmaengine.h> #include <mach/dma.h> - -struct imx_pcm_dma_params { - int dma; - unsigned long dma_addr; - int burstsize; -}; +#include "imx-pcm.h"
struct imx_ssi { struct platform_device *ac97_dev; @@ -218,13 +213,4 @@ struct imx_ssi { struct platform_device *soc_platform_pdev_fiq; };
-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); - -/* - * Do not change this as the FIQ handler depends on this size - */ -#define IMX_SSI_DMABUF_SIZE (64 * 1024) - #endif /* _IMX_SSI_H */