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  1. 03 Sep, 2012 3 commits
  2. 31 Aug, 2012 2 commits
  3. 30 Aug, 2012 6 commits
  4. 28 Aug, 2012 6 commits
  5. 27 Aug, 2012 1 commit
  6. 24 Aug, 2012 2 commits
  7. 23 Aug, 2012 1 commit
    • Mengdong Lin's avatar
      ALSA: hda - add runtime PM support · b8dfc462
      Mengdong Lin authored
      Runtime PM can bring more power saving:
      - When the controller is suspended, its parent device will also have a chance
        to suspend.
      - PCI subsystem can choose the lowest power state the controller can signal
        wake up from. This state can be D3cold on platforms with ACPI PM support.
      And runtime PM can provide a gerneral sysfs interface for a system policy
      Runtime PM support is based on current HDA power saving implementation. The user
      can enable runtime PM on platfroms that provide acceptable latency on transition
      from D3 to D0.
      - When both power saving and runtime PM are enabled:
        -- If a codec supports 'stop-clock' in D3, it will request suspending the
           controller after it enters D3 and request resuming the controller before
           back to D0. Thus the controller will be suspended only when all codecs are
           suspended and support stop-clock in D3.
        -- User IO operations and HW wakeup signal can resume the controller back to
      - If runtime PM is disabled, power saving just works as before.
      - If power saving is disabled, the controller won't be suspended because the
        power usage counter can never be 0.
      More about 'stop-clock' feature:
      If a codec can support targeted pass-through operations in D3 state when there
      is no BCLK present on the link, it will set CLKSTOP flag in the supported power
      states and report PS-ClkStopOk when entering D3 state. Please refer to HDA spec
      section Power state and Supported Power State.
      [Fixed CONFIG_PM_RUNTIME dependency in hda_intel.c by tiwai]
      Signed-off-by: default avatarMengdong Lin <>
      Signed-off-by: default avatarTakashi Iwai <>
  8. 22 Aug, 2012 2 commits
  9. 21 Aug, 2012 2 commits
    • Ondrej Zary's avatar
      ALSA: introduce snd-cmi8328: C-Media CMI8328 driver · f9933487
      Ondrej Zary authored
      Introduce snd-cmi8328 driver for C-Media CMI8328-based sound cards, such as
      AudioExcel AV500.
      It supports PCM playback and capture (full-duplex) through wss_lib, gameport,
      OPL3 and MPU401. The AV500 card has onboard Dream wavetable synth connected
      to the MPU401 port and Aux 1 input internally which works too.
      The CDROM interface is not supported (as the drivers for these CDROMs were
      removed from the kernel some time ago).
      A separate driver is needed because CMI8328 is completely different chip to
      CMI8329/CMI8330. It's configured by magic registers (there's no PnP). Sound is
      provided by a real WSS codec (CS4231A) and the SB part is just a SB Pro
      emulation (for DOS games, useless for Linux).
      When SB is enabled, the CMI8328 chip disables access to the WSS codec,
      emulates SoundBlaster on one side and outputs sound data to the codec - so SB
      and WSS can't work together with this card. The WSS codec can do full duplex
      by itself so there's no need for crazy things like snd-cmi8330 does
      (combining SB and WSS parts into one driver).
      Signed-off-by: default avatarOndrej Zary <>
      Signed-off-by: default avatarTakashi Iwai <>
    • Ondrej Zary's avatar
      ALSA: snd-als100: fix suspend/resume · 53e1719f
      Ondrej Zary authored
      snd_card_als100_probe() does not set pcm field in struct snd_sb.
      As a result, PCM is not suspended and applications don't know that they need
      to resume the playback.
      Tested with Labway A381-F20 card (ALS120).
      Signed-off-by: default avatarOndrej Zary <>
      Signed-off-by: default avatarTakashi Iwai <>
  10. 20 Aug, 2012 15 commits