1. 18 Nov, 2012 1 commit
  2. 17 Nov, 2012 1 commit
  3. 14 Nov, 2012 2 commits
  4. 13 Nov, 2012 1 commit
    • Martin Schwenke's avatar
      ALSA: usb-audio: Add quirk for Focusrite Scarlett 18i6 · 1762a59d
      Martin Schwenke authored
      Probing this device currently fails in snd_usb_audio_probe() because
      the call to snd_usb_create_mixer() fails.  This is due to unknown or
      non-standard interface descriptor subtypes in parse_audio_unit():
      
        usbaudio: unit 51: unexpected type 0x09
        snd-usb-audio: probe of 1-8:1.0 failed with error -5
      
      Some people are working around this by recompiling usb-audio with the
      call to snd_usb_create_mixer() commented out.  It would be nice to
      avoid that.
      
      While the best idea would be to look into the mixer creation failure,
      a reasonable short-term solution is to use quirks to only probe the
      trouble-free interfaces.  This allows audio and MIDI interfaces to be
      used without any obvious issues.
      
      Interface 0 is the main one to ignore.  It contains lots of
      control-fu, including the unexpected interface descriptor subtypes.
      Interface 5 is for firmware updates and I'm not sure how to get
      support for this.  Interface 3 is some sort of control interface that
      I don't understand:
      
          Interface Descriptor:
            bLength                 9
            bDescriptorType         4
            bInterfaceNumber        3
            bAlternateSetting       0
            bNumEndpoints           0
            bInterfaceClass         1 Audio
            bInterfaceSubClass      1 Control Device
            bInterfaceProtocol      0
            iInterface              0
            AudioControl Interface Descriptor:
              bLength                 9
              bDescriptorType        36
              bDescriptorSubtype      1 (HEADER)
              bcdADC               1.00
              wTotalLength            9
              bInCollection           1
              baInterfaceNr( 0)       1
      Signed-off-by: default avatarMartin Schwenke <martin@meltin.net>
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      1762a59d
  5. 12 Nov, 2012 4 commits
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  11. 31 Oct, 2012 1 commit
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