Comment 8 for bug 1405449

http://git.kernel.org/cgit/linux/kernel/git/tiwai/hda-emu.git/plain/codecs/cs4206-macbook-pro-81?id=HEAD

it is possiblw that analog output has 13 samples delay but digital output has 4 sample delay for those macbook using cs4206

ode 0x02 [Audio Output] wcaps 0xd041d: Stereo Amp-Out
  Control: name="Master Playback Switch", index=0, device=0
  Control: name="Master Playback Volume", index=0, device=0
  Control: name="Headphone Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Control: name="Headphone Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-Out caps: ofs=0x73, nsteps=0x7f, stepsize=0x01, mute=1
  Amp-Out vals: [0x68 0x68]
  Converter: stream=0, channel=0
  PCM:
    rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
    bits [0x1e]: 16 20 24 32
    formats [0x3]: PCM FLOAT
  Power states: D0 D3 EPSS
  Power: setting=D0, actual=D0
  Delay: 13 samples

ode 0x08 [Audio Output] wcaps 0x40611: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=0, device=0
  Control: name="IEC958 Playback Pro Mask", index=0, device=0
  Control: name="IEC958 Playback Default", index=0, device=0
  Control: name="IEC958 Playback Switch", index=0, device=0
  Control: name="IEC958 Default PCM Playback Switch", index=0, device=0
  Device: name="Cirrus Digital", type="SPDIF", device=1
  Converter: stream=0, channel=0
  Digital:
  Digital category: 0x0
  IEC Coding Type: 0x0
  PCM:
    rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
    bits [0x1e]: 16 20 24 32
    formats [0x7]: PCM FLOAT AC3
  Power states: D0 D3 EPSS
  Power: setting=D0, actual=D0
  Delay: 4 samples