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wm8731: document audiohw settings 

Change-Id: I78ec26a00a3e14a95c591ac81d96e1b480b9138e
This commit is contained in:
Amaury Pouly 2016-08-21 20:27:17 +01:00
parent b55adf1ca2
commit cc031d41ab
2 changed files with 4 additions and 2 deletions
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2
firmware/drivers/audio/wm8731.c
View File

@ -268,6 +268,8 @@ void audiohw_disable_recording(void)
codec_set_active(true);
}
/* Line in: 0 .. 31 => Volume -34.5 .. +12 dB
* Microphone: 0 or 20 dB */
void audiohw_set_recvol(int left, int right, int type)
{
switch (type)

4
firmware/export/wm8731.h
View File

@ -28,10 +28,10 @@
AUDIOHW_SETTING(VOLUME, "dB", 0, 1, -74, 6, -25)
#if defined(HAVE_WM8731) && defined(HAVE_RECORDING)
/* (x - 23)/1.5 *10 */
/* Line in: 0 .. 31 => Volume -34.5 .. +12 dB */
AUDIOHW_SETTING(LEFT_GAIN, "dB", 1, 1, 0, 31, 23, (val - 23) * 15)
AUDIOHW_SETTING(RIGHT_GAIN, "dB", 1, 1, 0, 31, 23, (val - 23) * 15)
/* 0 or 20 dB */
/* Microphone: 0 or 20 dB */
AUDIOHW_SETTING(MIC_GAIN, "dB", 1, 1, 0, 1, 0, val * 200)
#endif /* defined(HAVE_WM8731) && defined(HAVE_RECORDING) */