Eric Lee / smarc-fsl-linux-kernel

27 Oct, 2010

1 commit

  • 89e1e66d6   ALSA: usb-audio: automatically detect feedback format ... Browse Code »

    There are two USB Audio Class specifications (v1 and v2), but neither of
    them clearly defines the feedback format for high-speed UAC v1 devices.
    Add to this whatever the Creative and M-Audio firmware writers have been
    smoking, and it becomes impossible to predict the exact feedback format
    used by a particular device.

    Therefore, automatically detect the feedback format by looking at the
    magnitude of the first received feedback value.

    Also, this allows us to get rid of some special cases for E-Mu devices.

    Signed-off-by: Clemens Ladisch
    Signed-off-by: Takashi Iwai

    Clemens Ladisch
     

14 Aug, 2010

1 commit

  • 4f4e8f698   ALSA: usb: USB3 SuperSpeed sound support ... Browse Code »

    This is V2 of the patch, after feedback from Clemens and Daniel.

    This patch adds SuperSpeed support to the USB drivers under sound/. It adds
    tests for USB_SPEED_SUPER to the appropriate places that check for the USB
    speed.

    This patch has been tested with our SS USB3 device emulating a set of Yamaha
    speakers and a Logitech microphone, but with the descriptors modified to add
    USB3 support. It has also been tested with the real speakers and microphone,
    to make sure that USB2 devices still work.

    Signed-off-by: Paul Zimmerman
    Cc: Clemens Ladisch
    Cc: Daniel Mack
    Cc: Greg Kroah-Hartman
    Signed-off-by: Takashi Iwai

    Paul Zimmerman
     

05 Mar, 2010

3 commits

  • 015eb0b08   ALSA: usb-audio: use a format bitmask per alternate setting ... Browse Code »

    In preparation for USB audio 2.0 support, change the audioformat
    structure so that it uses a bitmask to specify possible formats.

    Signed-off-by: Clemens Ladisch
    Signed-off-by: Takashi Iwai

    Clemens Ladisch
     
  • e11b4e0e4   ALSA: usb-audio: rename substream format field to altset_idx ... Browse Code »

    The snd_usb_substream::format field actually contains the index of the
    current alternate setting, so rename it to altset_idx to avoid
    confusion.

    Signed-off-by: Clemens Ladisch
    Signed-off-by: Takashi Iwai

    Clemens Ladisch
     
  • e5779998b   ALSA: usb-audio: refactor code ... Browse Code »

    Clean up the usb audio driver by factoring out a lot of functions to
    separate files. Code for procfs, quirks, urbs, format parsers etc all
    got a new home now.

    Moved almost all special quirk handling to quirks.c and introduced new
    generic functions to handle them, so the exceptions do not pollute the
    whole driver.

    Renamed usbaudio.c to card.c because this is what it actually does now.
    Renamed usbmidi.c to midi.c for namespace clarity.
    Removed more things from usbaudio.h.

    The non-standard drivers were adopted accordingly.

    Signed-off-by: Daniel Mack
    Cc: Clemens Ladisch
    Signed-off-by: Takashi Iwai

    Daniel Mack