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ASoC: SPEAr: remove custom DMA alloc compat function 

spear_pcm_request_chan() is almost identical to
dmaengine_pcm_compat_request_channel(), with the exception that the
latter:

a) Assumes that the DAI DMA data is a struct snd_dmaengine_dai_dma_data
   pointer rather than some custom type.

b) dma_data->filter_data rather than dma_data should be passed to
   snd_dmaengine_pcm_request_channel() as the filter data.

Make minor changes to the SPEAr DAI drivers so that those two conditions
are met. This allows removal of the custom .compat_request_channel().

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Stephen Warren 2013-12-10 12:35:25 -07:00 committed by Mark Brown
parent ede38884ac
commit e1771bcf99
5 changed files with 24 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/sound/spear_dma.h
View File

@ -29,7 +29,6 @@ struct spear_dma_data {
dma_addr_t addr;
u32 max_burst;
enum dma_slave_buswidth addr_width;
bool (*filter)(struct dma_chan *chan, void *slave);
};
#endif /* SPEAR_DMA_H */

10
sound/soc/spear/spdif_in.c
View File

@ -18,6 +18,7 @@
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <sound/dmaengine_pcm.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
@ -38,6 +39,8 @@ struct spdif_in_dev {
struct device *dev;
void (*reset_perip)(void);
int irq;
struct snd_dmaengine_dai_dma_data dma_params_rx;
struct snd_dmaengine_pcm_config config;
};
static void spdif_in_configure(struct spdif_in_dev *host)
@ -54,7 +57,8 @@ static int spdif_in_dai_probe(struct snd_soc_dai *dai)
{
struct spdif_in_dev *host = snd_soc_dai_get_drvdata(dai);
dai->capture_dma_data = &host->dma_params;
host->dma_params_rx.filter_data = &host->dma_params;
dai->capture_dma_data = &host->dma_params_rx;
return 0;
}
@ -245,7 +249,6 @@ static int spdif_in_probe(struct platform_device *pdev)
host->dma_params.addr = res_fifo->start;
host->dma_params.max_burst = 16;
host->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
host->dma_params.filter = pdata->filter;
host->reset_perip = pdata->reset_perip;
host->dev = &pdev->dev;
@ -263,7 +266,8 @@ static int spdif_in_probe(struct platform_device *pdev)
if (ret)
return ret;
return devm_spear_pcm_platform_register(&pdev->dev);
return devm_spear_pcm_platform_register(&pdev->dev, &host->config,
pdata->filter);
}
static struct platform_driver spdif_in_driver = {

10
sound/soc/spear/spdif_out.c
View File

@ -18,6 +18,7 @@
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <sound/dmaengine_pcm.h>
#include <sound/soc.h>
#include <sound/spear_dma.h>
#include <sound/spear_spdif.h>
@ -36,6 +37,8 @@ struct spdif_out_dev {
struct spdif_out_params saved_params;
u32 running;
void __iomem *io_base;
struct snd_dmaengine_dai_dma_data dma_params_tx;
struct snd_dmaengine_pcm_config config;
};
static void spdif_out_configure(struct spdif_out_dev *host)
@ -245,7 +248,8 @@ static int spdif_soc_dai_probe(struct snd_soc_dai *dai)
{
struct spdif_out_dev *host = snd_soc_dai_get_drvdata(dai);
dai->playback_dma_data = &host->dma_params;
host->dma_params_tx.filter_data = &host->dma_params;
dai->playback_dma_data = &host->dma_params_tx;
return snd_soc_add_dai_controls(dai, spdif_out_controls,
ARRAY_SIZE(spdif_out_controls));
@ -304,7 +308,6 @@ static int spdif_out_probe(struct platform_device *pdev)
host->dma_params.addr = res->start + SPDIF_OUT_FIFO_DATA;
host->dma_params.max_burst = 16;
host->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
host->dma_params.filter = pdata->filter;
dev_set_drvdata(&pdev->dev, host);
@ -313,7 +316,8 @@ static int spdif_out_probe(struct platform_device *pdev)
if (ret)
return ret;
return devm_spear_pcm_platform_register(&pdev->dev);
return devm_spear_pcm_platform_register(&pdev->dev, &host->config,
pdata->filter);
}
#ifdef CONFIG_PM

21
sound/soc/spear/spear_pcm.c
View File

@ -32,26 +32,19 @@ static const struct snd_pcm_hardware spear_pcm_hardware = {
.fifo_size = 0, /* fifo size in bytes */
};
static struct dma_chan *spear_pcm_request_chan(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_substream *substream)
{
struct spear_dma_data *dma_data;
dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
return snd_dmaengine_pcm_request_channel(dma_data->filter, dma_data);
}
static const struct snd_dmaengine_pcm_config spear_dmaengine_pcm_config = {
.pcm_hardware = &spear_pcm_hardware,
.compat_request_channel = spear_pcm_request_chan,
.prealloc_buffer_size = 16 * 1024,
};
int devm_spear_pcm_platform_register(struct device *dev)
int devm_spear_pcm_platform_register(struct device *dev,
struct snd_dmaengine_pcm_config *config,
bool (*filter)(struct dma_chan *chan, void *slave))
{
return devm_snd_dmaengine_pcm_register(dev,
&spear_dmaengine_pcm_config,
*config = spear_dmaengine_pcm_config;
config->compat_filter_fn = filter;
return snd_dmaengine_pcm_register(dev, config,
SND_DMAENGINE_PCM_FLAG_NO_DT |
SND_DMAENGINE_PCM_FLAG_COMPAT);
}

4
sound/soc/spear/spear_pcm.h
View File

@ -17,6 +17,8 @@
#ifndef __SPEAR_PCM_H__
#define __SPEAR_PCM_H__
int devm_spear_pcm_platform_register(struct device *dev);
int devm_spear_pcm_platform_register(struct device *dev,
struct snd_dmaengine_pcm_config *config,
bool (*filter)(struct dma_chan *chan, void *slave));
#endif