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ASoC: atmel-ssc-dai: register dai and pcm directly 

change the method for register dai and pcm
  - let the atmel-ssc-dai no longer as a standalone platform device
  - remap ssc and then register dai directly
  - register pcm from dai directly
  - modify the code which related with this change

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Bo Shen 2012-11-14 18:09:09 +08:00 committed by Mark Brown
parent 099343c64e
commit be681a8275
4 changed files with 50 additions and 136 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
sound/soc/atmel/atmel-pcm.c
View File

@ -473,28 +473,17 @@ static struct snd_soc_platform_driver atmel_soc_platform = {
.resume = atmel_pcm_resume,
};
static int __devinit atmel_soc_platform_probe(struct platform_device *pdev)
int atmel_pcm_platform_register(struct device *dev)
{
return snd_soc_register_platform(&pdev->dev, &atmel_soc_platform);
return snd_soc_register_platform(dev, &atmel_soc_platform);
}
EXPORT_SYMBOL(atmel_pcm_platform_register);
static int __devexit atmel_soc_platform_remove(struct platform_device *pdev)
void atmel_pcm_platform_unregister(struct device *dev)
{
snd_soc_unregister_platform(&pdev->dev);
return 0;
snd_soc_unregister_platform(dev);
}
static struct platform_driver atmel_pcm_driver = {
.driver = {
.name = "atmel-pcm-audio",
.owner = THIS_MODULE,
},
.probe = atmel_soc_platform_probe,
.remove = __devexit_p(atmel_soc_platform_remove),
};
module_platform_driver(atmel_pcm_driver);
EXPORT_SYMBOL(atmel_pcm_platform_unregister);
MODULE_AUTHOR("Sedji Gaouaou <sedji.gaouaou@atmel.com>");
MODULE_DESCRIPTION("Atmel PCM module");

3
sound/soc/atmel/atmel-pcm.h
View File

@ -80,4 +80,7 @@ struct atmel_pcm_dma_params {
#define ssc_readx(base, reg) (__raw_readl((base) + (reg)))
#define ssc_writex(base, reg, value) __raw_writel((value), (base) + (reg))
int atmel_pcm_platform_register(struct device *dev);
void atmel_pcm_platform_unregister(struct device *dev);
#endif /* _ATMEL_PCM_H */

157
sound/soc/atmel/atmel_ssc_dai.c
View File

@ -48,11 +48,7 @@
#include "atmel_ssc_dai.h"
#if defined(CONFIG_ARCH_AT91SAM9260) || defined(CONFIG_ARCH_AT91SAM9G20)
#define NUM_SSC_DEVICES 1
#else
#define NUM_SSC_DEVICES 3
#endif
/*
* SSC PDC registers required by the PCM DMA engine.
@ -107,7 +103,6 @@ static struct atmel_pcm_dma_params ssc_dma_params[NUM_SSC_DEVICES][2] = {
.pdc = &pdc_rx_reg,
.mask = &ssc_rx_mask,
} },
#if NUM_SSC_DEVICES == 3
{{
.name = "SSC1 PCM out",
.pdc = &pdc_tx_reg,
@ -128,7 +123,6 @@ static struct atmel_pcm_dma_params ssc_dma_params[NUM_SSC_DEVICES][2] = {
.pdc = &pdc_rx_reg,
.mask = &ssc_rx_mask,
} },
#endif
};
@ -139,7 +133,6 @@ static struct atmel_ssc_info ssc_info[NUM_SSC_DEVICES] = {
.dir_mask = SSC_DIR_MASK_UNUSED,
.initialized = 0,
},
#if NUM_SSC_DEVICES == 3
{
.name = "ssc1",
.lock = __SPIN_LOCK_UNLOCKED(ssc_info[1].lock),
@ -152,7 +145,6 @@ static struct atmel_ssc_info ssc_info[NUM_SSC_DEVICES] = {
.dir_mask = SSC_DIR_MASK_UNUSED,
.initialized = 0,
},
#endif
};
@ -690,27 +682,9 @@ static int atmel_ssc_resume(struct snd_soc_dai *cpu_dai)
static int atmel_ssc_probe(struct snd_soc_dai *dai)
{
struct atmel_ssc_info *ssc_p = &ssc_info[dai->id];
int ret = 0;
snd_soc_dai_set_drvdata(dai, ssc_p);
/*
* Request SSC device
*/
ssc_p->ssc = ssc_request(dai->id);
if (IS_ERR(ssc_p->ssc)) {
printk(KERN_ERR "ASoC: Failed to request SSC %d\n", dai->id);
ret = PTR_ERR(ssc_p->ssc);
}
return ret;
}
static int atmel_ssc_remove(struct snd_soc_dai *dai)
{
struct atmel_ssc_info *ssc_p = snd_soc_dai_get_drvdata(dai);
ssc_free(ssc_p->ssc);
return 0;
}
@ -728,11 +702,8 @@ static const struct snd_soc_dai_ops atmel_ssc_dai_ops = {
.set_clkdiv = atmel_ssc_set_dai_clkdiv,
};
static struct snd_soc_dai_driver atmel_ssc_dai[NUM_SSC_DEVICES] = {
{
.name = "atmel-ssc-dai.0",
static struct snd_soc_dai_driver atmel_ssc_dai = {
.probe = atmel_ssc_probe,
.remove = atmel_ssc_remove,
.suspend = atmel_ssc_suspend,
.resume = atmel_ssc_resume,
.playback = {
@ -746,69 +717,37 @@ static struct snd_soc_dai_driver atmel_ssc_dai[NUM_SSC_DEVICES] = {
.rates = ATMEL_SSC_RATES,
.formats = ATMEL_SSC_FORMATS,},
.ops = &atmel_ssc_dai_ops,
},
#if NUM_SSC_DEVICES == 3
{
.name = "atmel-ssc-dai.1",
.probe = atmel_ssc_probe,
.remove = atmel_ssc_remove,
.suspend = atmel_ssc_suspend,
.resume = atmel_ssc_resume,
.playback = {
.channels_min = 1,
.channels_max = 2,
.rates = ATMEL_SSC_RATES,
.formats = ATMEL_SSC_FORMATS,},
.capture = {
.channels_min = 1,
.channels_max = 2,
.rates = ATMEL_SSC_RATES,
.formats = ATMEL_SSC_FORMATS,},
.ops = &atmel_ssc_dai_ops,
},
{
.name = "atmel-ssc-dai.2",
.probe = atmel_ssc_probe,
.remove = atmel_ssc_remove,
.suspend = atmel_ssc_suspend,
.resume = atmel_ssc_resume,
.playback = {
.channels_min = 1,
.channels_max = 2,
.rates = ATMEL_SSC_RATES,
.formats = ATMEL_SSC_FORMATS,},
.capture = {
.channels_min = 1,
.channels_max = 2,
.rates = ATMEL_SSC_RATES,
.formats = ATMEL_SSC_FORMATS,},
.ops = &atmel_ssc_dai_ops,
},
#endif
};
static __devinit int asoc_ssc_probe(struct platform_device *pdev)
static int asoc_ssc_init(struct device *dev)
{
BUG_ON(pdev->id < 0);
BUG_ON(pdev->id >= ARRAY_SIZE(atmel_ssc_dai));
return snd_soc_register_dai(&pdev->dev, &atmel_ssc_dai[pdev->id]);
}
int ret;
ret = snd_soc_register_dai(dev, &atmel_ssc_dai);
if (ret) {
dev_err(dev, "Could not register DAI: %d\n", ret);
goto err;
}
ret = atmel_pcm_platform_register(dev);
if (ret) {
dev_err(dev, "Could not register PCM: %d\n", ret);
goto err_unregister_dai;
};
static int __devexit asoc_ssc_remove(struct platform_device *pdev)
{
snd_soc_unregister_dai(&pdev->dev);
return 0;
err_unregister_dai:
snd_soc_unregister_dai(dev);
err:
return ret;
}
static struct platform_driver asoc_ssc_driver = {
.driver = {
.name = "atmel-ssc-dai",
.owner = THIS_MODULE,
},
.probe = asoc_ssc_probe,
.remove = __devexit_p(asoc_ssc_remove),
};
static void asoc_ssc_exit(struct device *dev)
{
atmel_pcm_platform_unregister(dev);
snd_soc_unregister_dai(dev);
}
/**
* atmel_ssc_set_audio - Allocate the specified SSC for audio use.
@ -816,50 +755,32 @@ static struct platform_driver asoc_ssc_driver = {
int atmel_ssc_set_audio(int ssc_id)
{
struct ssc_device *ssc;
static struct platform_device *dma_pdev;
struct platform_device *ssc_pdev;
int ret;
if (ssc_id < 0 || ssc_id >= ARRAY_SIZE(atmel_ssc_dai))
return -EINVAL;
/* Allocate a dummy device for DMA if we don't have one already */
if (!dma_pdev) {
dma_pdev = platform_device_alloc("atmel-pcm-audio", -1);
if (!dma_pdev)
return -ENOMEM;
ret = platform_device_add(dma_pdev);
if (ret < 0) {
platform_device_put(dma_pdev);
dma_pdev = NULL;
return ret;
}
}
ssc_pdev = platform_device_alloc("atmel-ssc-dai", ssc_id);
if (!ssc_pdev)
return -ENOMEM;
/* If we can grab the SSC briefly to parent the DAI device off it */
ssc = ssc_request(ssc_id);
if (IS_ERR(ssc))
pr_warn("Unable to parent ASoC SSC DAI on SSC: %ld\n",
if (IS_ERR(ssc)) {
pr_err("Unable to parent ASoC SSC DAI on SSC: %ld\n",
PTR_ERR(ssc));
else {
ssc_pdev->dev.parent = &(ssc->pdev->dev);
ssc_free(ssc);
return PTR_ERR(ssc);
} else {
ssc_info[ssc_id].ssc = ssc;
}
ret = platform_device_add(ssc_pdev);
if (ret < 0)
platform_device_put(ssc_pdev);
ret = asoc_ssc_init(&ssc->pdev->dev);
return ret;
}
EXPORT_SYMBOL_GPL(atmel_ssc_set_audio);
module_platform_driver(asoc_ssc_driver);
void atmel_ssc_put_audio(int ssc_id)
{
struct ssc_device *ssc = ssc_info[ssc_id].ssc;
ssc_free(ssc);
asoc_ssc_exit(&ssc->pdev->dev);
}
EXPORT_SYMBOL_GPL(atmel_ssc_put_audio);
/* Module information */
MODULE_AUTHOR("Sedji Gaouaou, sedji.gaouaou@atmel.com, www.atmel.com");

3
sound/soc/atmel/atmel_ssc_dai.h
View File

@ -117,6 +117,7 @@ struct atmel_ssc_info {
struct atmel_ssc_state ssc_state;
};
int atmel_ssc_set_audio(int ssc);
int atmel_ssc_set_audio(int ssc_id);
void atmel_ssc_put_audio(int ssc_id);
#endif /* _AT91_SSC_DAI_H */