Comment 12 for bug 1384952

> With kernel 4.3 input is working now. But only lineIn.

USB Mixer: usb_id=0x104385c1, ctrlif=0, ctlerr=1
Card: ASUS Xonar U7 Echelon Ed. at usb-0000:00:13.2-3, high speed
  Unit: 13
    Control: name="Input Gain Pad Control", index=0
    Info: id=13, control=12, cmask=0x3, channels=2, type="BOOLEAN"
    Volume: min=0, max=1, dBmin=0, dBmax=0
  Unit: 13
    Control: name="Speaker Playback Volume", index=0
    Info: id=13, control=2, cmask=0xff, channels=8, type="S16"
    Volume: min=-32512, max=0, dBmin=-12700, dBmax=0
  Unit: 13
    Control: name="Speaker Playback Switch", index=0
    Info: id=13, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN"
    Volume: min=0, max=1, dBmin=0, dBmax=0
  Unit: 14
    Control: name="IEC958 In Playback Switch", index=0
    Info: id=14, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN"
    Volume: min=0, max=1, dBmin=0, dBmax=0
  Unit: 16
    Control: name="PCM Capture Switch", index=0
    Info: id=16, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN"
    Volume: min=0, max=1, dBmin=0, dBmax=0
  Unit: 17
    Control: name="PCM Capture Switch", index=1
    Info: id=17, control=1, cmask=0x0, channels=1, type="INV_BOOLEAN"
    Volume: min=0, max=1, dBmin=0, dBmax=0
  Unit: 20
    Control: name="PCM Capture Source", index=0
    Info: id=20, control=0, cmask=0x0, channels=1, type="U8"
    Volume: min=1, max=2, dBmin=0, dBmax=0

http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa/mixer/paths?id=b7744e5004b7dbd36bbb0ed7d211e7da3f5feb1b