1. 14 Jan, 2014 2 commits
  2. 13 Jan, 2014 2 commits
  3. 11 Jan, 2014 2 commits
  4. 10 Jan, 2014 1 commit
    • Sarah Bessmer's avatar
      ALSA: ctxfi - Work around emu20k1 glitch to prevent buffered sound data loss · e240a469
      Sarah Bessmer authored
      Occasionally, on playback stream ringbuffer wraparound, the EMU20K1
      hardware will momentarily return 0 instead of the proper current(loop)
      address. This patch handles that case, fixing the problem of playback
      position corruption and subsequent loss of buffered sound data, that
      occurs with some common buffering layout patterns(e.g. multiple
      simultaneous output streams with differently-sized or
      non-power-of-2-sized buffers).
      
      An alternate means of fixing the problem would be to read the ca
      register continuously, until two sequential reads return the same
      value; however, that would be a more invasive change, has performance
      implications, and isn't necessary unless there are also issues with the
      value not being updated atomically in regards to individual bits or
      something similar(which I have not encountered through light testing).
      
      I have no EMU20K2 hardware to confirm if the issue is present there,
      but even if it's not, this change shouldn't break anything that's not
      already broken.
      Signed-off-by: default avatarSarah Bessmer <aotos@fastmail.fm>
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      e240a469
  5. 09 Jan, 2014 7 commits
  6. 08 Jan, 2014 7 commits
  7. 07 Jan, 2014 1 commit
  8. 05 Jan, 2014 8 commits
  9. 02 Jan, 2014 8 commits
  10. 01 Jan, 2014 1 commit
  11. 31 Dec, 2013 1 commit
    • Nicolin Chen's avatar
      ASoC: imx-spdif: Use snd-soc-dummy CODEC driver to link card · 14c3aa98
      Nicolin Chen authored
      This is a quick fix for the below two issues when building spdif as modules.
      
      1) If modprobing modules in order: (Step 1) snd-soc-fsl-spdif -> (Step 2)
      snd-soc-imx-spdif -> (Step 3) snd-soc-spdif-tx/rx, we will fail to create
      imx-spdif card and dai link unless we rmmod snd-soc-imx-spdif and modprobe
      it again due to the execution platform_driver_unregister() in probe() when
      meeting -EPROBE_DEFER at Step 2.
      
      2) After "imx-spdif sound-spdif.17: dit-hifi <-> 2004000.spdif mapping ok",
      'rmmod snd-soc-imx-spdif' would cause kernel dump with warning:
      WARNING: CPU: 0 PID: 1301 at /home/rmk/git/linux-rmk/fs/sysfs/dir.c:915 sysfs_hash_and_remove+0x84/0x90()
      sysfs: can not remove 'dapm_widget', no directory
      This should be caused by disordered resourse releasing of the whole link.
      And trying to unregister the card and then CODEC dev can't fix this issue.
      
      Thus this patch just provides a simple fix to these two bugs by using the
      snd-soc-dummy in the core instead of seperate snd-soc-spdif-tx/rx so that
      there's no need to handle the registering and unregistering of CODEC or
      CODEC dai any more.
      Signed-off-by: default avatarNicolin Chen <Guangyu.Chen@freescale.com>
      Signed-off-by: default avatarMark Brown <broonie@linaro.org>
      14c3aa98