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kpb: reduce buffer length on non-TGL platforms 

Due to memory constraints, the keyphrase buffer cannot be too long.
As a consequence of reducing the buffer,
platform wakeup margin check has to be removed as well,
otherwise the maximum draining request will be very short.

This is a temporary measure,
ultimately the buffer length and wakeup time settings
should be moved to the topology.

Signed-off-by: Slawomir Blauciak <slawomir.blauciak@linux.intel.com>
This commit is contained in:
Slawomir Blauciak 2020-09-10 12:49:16 +02:00 committed by Liam Girdwood
parent 0f4a0e2907
commit af366cfbd2
1 changed files with 8 additions and 0 deletions
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8
src/include/sof/audio/kpb.h
View File

@ -15,8 +15,16 @@
struct comp_buffer;
/* KPB internal defines */
#ifdef CONFIG_TIGERLAKE
#define KPB_MAX_BUFF_TIME 3000 /**< time of buffering in miliseconds */
#define HOST_WAKEUP_TIME 1000 /* aprox. time of host DMA wakup from suspend [ms] */
#else
/** Due to memory constraints on non-TGL platforms, the buffers are smaller. */
#define KPB_MAX_BUFF_TIME 2100 /**< time of buffering in miliseconds */
#define HOST_WAKEUP_TIME 0 /* aprox. time of host DMA wakup from suspend [ms] */
#endif
#define KPB_MAX_DRAINING_REQ (KPB_MAX_BUFF_TIME - HOST_WAKEUP_TIME)
#define KPB_MAX_SUPPORTED_CHANNELS 2 /**< number of supported channels */
/**< number of samples taken each milisecond */