1. 15 4月, 2013 1 次提交
  2. 13 4月, 2013 1 次提交
    • C
      ALSA: usb: Add quirk for 192KHz recording on E-Mu devices · 1539d4f8
      Calvin Owens 提交于
      When recording at 176.2KHz or 192Khz, the device adds a 32-bit length
      header to the capture packets, which obviously needs to be ignored for
      recording to work properly.
      
      Userspace expected:  L0 L1 L2 R0 R1 R2
      ...but actually got: R2 L0 L1 L2 R0 R1
      
      Also, the last byte of the length header being interpreted as L0 of
      the first sample caused spikes every 0.5ms, resulting in a loud 16KHz
      tone (about the highest 'B' on a piano) being present throughout
      captures.
      
      Tested at all sample rates on an E-Mu 0404USB, and tested for
      regressions on a generic USB headset.
      Signed-off-by: NCalvin Owens <jcalvinowens@gmail.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      1539d4f8
  3. 11 4月, 2013 4 次提交
  4. 10 4月, 2013 1 次提交
  5. 09 4月, 2013 1 次提交
  6. 07 4月, 2013 1 次提交
  7. 05 4月, 2013 3 次提交
  8. 04 4月, 2013 11 次提交
  9. 03 4月, 2013 2 次提交
    • T
      Merge branch 'for-linus' into for-next · efc33ce1
      Takashi Iwai 提交于
      Back-merge for cleaning up usb-audio code the recent commit modified,
      and further UAC2 autoclock patches.
      efc33ce1
    • T
      ALSA: usb: Work around CM6631 sample rate change bug · 690a863f
      Torstein Hegge 提交于
      The C-Media CM6631 USB receiver doesn't respond to changes in sample rate
      while the interface is active. The same behavior is observed in other UAC2
      hardware like the VIA VT1731.
      
      Reset the interface after setting the sampling frequency on sample rate
      changes, to ensure that the sample rate set by snd_usb_init_sample_rate() is
      used. Otherwise, the device will try to use the sample rate of the previous
      stream, causing distorted sound on sample rate changes.
      
      The reset is performed for all UAC2 devices, as it should not affect a
      standards compliant device, but it is only necessary for C-Media CM6631,
      VIA VT1731 and possibly others.
      
      Failure to read sample rate from the device is not handled as an error in
      set_sample_rate_v2(), as (permanent or intermittent) failure to read sample
      rate isn't essential for a successful sample rate set.
      Signed-off-by: NTorstein Hegge <hegge@resisty.net>
      Acked-by: NClemens Ladisch <clemens@ladisch.de>
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      690a863f
  10. 02 4月, 2013 6 次提交
  11. 26 3月, 2013 8 次提交
  12. 24 3月, 2013 1 次提交