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Samsung YH820/YH92X: Improve recording. 

Because of architecture of the codec it's always necessary to route the input
signal from ADC to DAC, in order to have a control over the monitoring volume
and in order to hear anything while recording.

Change-Id: I1089894c949ab7371857d74aedb6bdf5a7d39c41
This commit is contained in:
Szymon Dziok 2014-06-15 20:01:15 +00:00
parent 6363294591
commit 0c3dca1f33
1 changed files with 6 additions and 5 deletions
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11
firmware/drivers/audio/ak4537.c
View File

@ -273,6 +273,8 @@ void audiohw_enable_recording(bool source_mic)
/* power up right channel input and ADC */
akc_set(AK4537_PM3, PMADR | PMIPGR);
}
/* ADC -> DAC, external data to DAC ignored */
akc_set(AK4537_MODE2, LOOP);
}
void audiohw_disable_recording(void)
@ -286,6 +288,9 @@ void audiohw_disable_recording(void)
/* power down ADC, mic preamp and line amp */
akc_clear(AK4537_PM1, PMADL | PMMICL | PMIPGL);
akc_clear(AK4537_PM3, PMADR | PMMICR | PMIPGR);
/* break ADC -> DAC connection */
akc_clear(AK4537_MODE2, LOOP);
}
void audiohw_set_recvol(int left, int right, int type)
@ -329,10 +334,6 @@ void audiohw_set_recvol(int left, int right, int type)
void audiohw_set_monitor(bool enable)
{
if (enable)
/* mix input signal to headphone output */
akc_set(AK4537_SIGSEL2, MICL);
else
akc_clear(AK4537_SIGSEL2, MICL);
(void)enable;
}
#endif /* HAVE_RECORDING */