sound/soc/codec.rst

6 the codec, FM, MODEM, BT or external DSP to provide audio capture and playback.
11 Each codec class driver *must* provide the following features:-
14 2. Codec control IO - using RegMap API
15 3. Mixers and audio controls
16 4. Codec audio operations
20 Optionally, codec drivers can also provide:-
31 -------------------------------
34 registered with the core by your machine driver.
49 	.name = "wm8731-hifi",
68 ----------------
75 Mixers and audio controls
76 -------------------------
77 All the codec mixers and audio controls can be defined using the convenience
83 Defines a single control as follows:-
92 Other macros include:-
107 Defines an single enumerated control as follows:-
120 Codec Audio Operations
121 ----------------------
122 The codec driver also supports the following ALSA PCM operations:-
125   /* SoC audio ops */
135 http://www.alsa-project.org/~iwai/writing-an-alsa-driver/
139 ----------------
140 The Dynamic Audio Power Management description describes the codec power
141 components and their relationships and registers to the ASoC core.
148 ------------------
153 Power states:-
169 ------------------------------
174 A callback can be created that is called by the core for each codec DAI
182 	struct snd_soc_component *component = dai->component;