Dear all:i meet some problem in using the ALSA in the ARM base SOC. the get avail_min return zero!
but it is have value in the debug info. output from the driver. Rule 1 [bf00713c]: SAMPLE_BITS = [16 16] -> [16 16] Rule 2 [bf0072a4]: SAMPLE_BITS = [16 16] -> [16 16] Rule 3 [bf007240]: FRAME_BITS = [32 32] -> [32 32] Rule 4 [bf007370]: FRAME_BITS = [32 32] -> [32 32] Rule 5 [bf007370]: FRAME_BITS = [32 32] -> [32 32] Rule 6 [bf0072a4]: CHANNELS = [2 2] -> [2 2] Rule 7 [bf007370]: RATE = [44100 44100] -> [44100 44100] Rule 8 [bf007370]: RATE = [44100 44100] -> [44100 44100] Rule 9 [bf0072a4]: PERIODS = [4 4] -> [4 4] Rule 10 [bf0072a4]: PERIOD_SIZE = [4096 4096] -> [4096 4096] Rule 11 [bf007370]: PERIOD_SIZE = [4096 4096] -> [4096 4096] Rule 12 [bf007308]: PERIOD_SIZE = [4096 4096] -> [4096 4096] Rule 13 [bf007240]: BUFFER_SIZE = [16384 16384] -> [16384 16384] Rule 14 [bf007370]: BUFFER_SIZE = [16384 16384] -> [16384 16384] Rule 15 [bf007308]: BUFFER_SIZE = [16384 16384] -> [16384 16384] Rule 16 [bf007308]: PERIOD_BYTES = [16384 16384] -> [16384 16384] Rule 17 [bf007308]: BUFFER_BYTES = [65536 65536] -> [65536 65536] Rule 18 [bf007370]: PERIOD_TIME = (92879 92880) -> (92879 92880) Rule 19 [bf007370]: BUFFER_TIME = (371519 371520) -> (371519 371520) Rule 20 [bf033c00]: CHANNELS = [2 2] -> [2 2] Rule 21 [bf033e74]: RATE = [44100 44100]s->codec_idx:0x0,s->rate_idx:0x0 -> [44100 44100] Rule 22 [bf0062ec]: BUFFER_BYTES = [65536 65536] -> [65536 65536] output form the aplayer..... start_mode: DATA xrun_mode: STOP tstamp_mode: NONE period_step: 1 sleep_min: 0 avail_min: 4096 xfer_align: 4096 silence_threshold: 0 silence_size: 0 boundary: 1073741824 aplay: set_params:1013: snd_pcm_sw_params ALSA lib pcm.c:873:(snd_pcm_sw_params) params->avail_min is 0 aplay: set_params:1017: unable to install sw params: start_mode: DATA xrun_mode: STOP tstamp_mode: NONE period_step: 1 sleep_min: 0 avail_min: 0 xfer_align: 113608 silence_threshold: 0 silence_size: 0 boundary: 1073741824 when i force the avail_min to 4096, the whole system work well. who can tell me any idea? Thanks! Br Thomas
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