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  1. Sep 02, 2008
  2. Sep 01, 2008
  3. Aug 29, 2008
    • Clemens Ladisch's avatar
      ALSA: oxygen: fix distorted output on AK4396-based cards · df91bc23
      Clemens Ladisch authored
      
      When changing the sample rate, the CMI8788's master clock output becomes
      unstable for a short time.  The AK4396 needs the master clock to do SPI
      writes, so writing to an AK4396 control register directly after a sample
      rate change will garble the value.  In our case, this leads to the DACs
      being misconfigured to I2S sample format, which results in a wrong
      output level and horrible distortions on samples louder than -6 dB.
      
      To fix this, we need to wait until the new master clock signal has
      become stable before doing SPI writes.
      
      Signed-off-by: default avatarClemens Ladisch <clemens@ladisch.de>
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      df91bc23
  4. Aug 27, 2008
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