ALSA driver---register platform
platform通过调用snd_soc_register_platform来注册。snd_soc_register ...
原文：ALSA driver---register CPU DAI
参考： https: elixir.bootlin.com linux v . . source sound soc soc core.c L https: blog.csdn.net DroidPhone article details CPU DAI通过调用snd soc register component进行注册。 在snd soc register component函数内主要创建和分配 ...
2020-04-05 14:01 0 1098 推荐指数：
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ALSA driver---register codec
参考： https://elixir.bootlin.com/linux/v4.9.218/source/sound/soc/soc-core.c#L3314 https://blog.csdn. ...
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参考： https://elixir.bootlin.com/linux/v4.9.218/source/sound/soc/soc-dapm.c#L804 https://blog.csdn.n ...
ALSA driver--HW Buffer
当app在调用snd_pcm_writei时，alsa core将app传来的数据搬到HW buffer（即DMA buffer）中，alsa driver从HW buffer中读取数据传输到硬件播放。 ALSA buffer是采用ring buffer来实现的。ring buffer有多个HW ...
driver_register()函数解析
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ALSA driver--PCM实例创建框架
在介绍PCM 之前，我们先给出创建PCM实例的框架。 #include <sound/pcm.h> .... /* hardware definition */ sta ...