1. 05 2月, 2013 1 次提交
  2. 04 2月, 2013 1 次提交
  3. 24 1月, 2013 1 次提交
  4. 20 1月, 2013 1 次提交
  5. 18 1月, 2013 3 次提交
  6. 16 1月, 2013 2 次提交
  7. 13 1月, 2013 1 次提交
  8. 09 1月, 2013 4 次提交
  9. 15 12月, 2012 1 次提交
    • M
      ASoC: Prevent pop_wait overwrite · 9bffb1fb
      Misael Lopez Cruz 提交于
      pop_wait is used to determine if a deferred playback close
      needs to be cancelled when the a PCM is open or if after
      the power-down delay expires it needs to run. pop_wait is
      associated with the CODEC DAI, so the CODEC DAI must be
      unique. This holds true for most CODECs, except for the
      dummy CODEC and its DAI.
      
      In DAI links with non-unique dummy CODECs (e.g. front-ends),
      pop_wait can be overwritten by another DAI link using also a
      dummy CODEC. Failure to cancel a deferred close can cause
      mute due to the DAPM STOP event sent in the deferred work.
      
      One scenario where pop_wait is overwritten and causing mute
      is below (where hw:0,0 and hw:0,1 are two front-ends with
      default pmdown_time = 5 secs):
      
      aplay /dev/urandom -D hw:0,0 -c 2 -r 48000 -f S16_LE -d 1
      sleep 1
      aplay /dev/urandom -D hw:0,1 -c 2 -r 48000 -f S16_LE -d 3 &
      aplay /dev/urandom -D hw:0,0 -c 2 -r 48000 -f S16_LE
      
      Since CODECs may not be unique, pop_wait is moved to the PCM
      runtime structure. Creating separate dummy CODECs for each
      DAI link can also solve the problem, but at this point it's
      only pop_wait variable in the CODEC DAI that has negative
      effects by not being unique.
      Signed-off-by: NMisael Lopez Cruz <misael.lopez@ti.com>
      Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
      9bffb1fb
  10. 10 12月, 2012 5 次提交
  11. 09 12月, 2012 20 次提交