ASoC: Add more natural support for no-DMA DAIs
Since we can now support multiple platforms allow machines to not specify a platform in a DAI link. Since the rest of the code requires that we have a struct device for all objects we do this by substituting in a dummy device that we register automatically. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> Acked-by: Liam Girdwood <lrg@ti.com>
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@ -13,6 +13,7 @@
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* option) any later version.
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*/
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#include <linux/platform_device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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@ -55,3 +56,57 @@ int snd_soc_params_to_bclk(struct snd_pcm_hw_params *params)
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return ret;
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}
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EXPORT_SYMBOL_GPL(snd_soc_params_to_bclk);
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static struct snd_soc_platform_driver dummy_platform;
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static __devinit int snd_soc_dummy_probe(struct platform_device *pdev)
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{
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return snd_soc_register_platform(&pdev->dev, &dummy_platform);
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}
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static __devexit int snd_soc_dummy_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_platform(&pdev->dev);
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return 0;
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}
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static struct platform_driver soc_dummy_driver = {
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.driver = {
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.name = "snd-soc-dummy",
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.owner = THIS_MODULE,
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},
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.probe = snd_soc_dummy_probe,
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.remove = __devexit_p(snd_soc_dummy_remove),
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};
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static struct platform_device *soc_dummy_dev;
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static int __init snd_soc_util_init(void)
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{
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int ret;
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soc_dummy_dev = platform_device_alloc("snd-soc-dummy", -1);
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if (!soc_dummy_dev)
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return -ENOMEM;
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ret = platform_device_add(soc_dummy_dev);
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if (ret != 0) {
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platform_device_put(soc_dummy_dev);
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return ret;
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}
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ret = platform_driver_register(&soc_dummy_driver);
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if (ret != 0)
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platform_device_unregister(soc_dummy_dev);
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return ret;
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}
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module_init(snd_soc_util_init);
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static void __exit snd_soc_util_exit(void)
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{
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platform_device_unregister(soc_dummy_dev);
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platform_driver_unregister(&soc_dummy_driver);
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}
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module_exit(snd_soc_util_exit);
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