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  1. 29 Jan, 2009 4 commits
    • Peter Ujfalusi's avatar
      ASoC: TWL4030: Add analog loopback support · 7393958f
      Peter Ujfalusi authored 
      This patch adds the analog loopback/bypass support for twl4030 codec.

Details for the implementation:
It seams that the analog loopback needs the DAC powered on on the channel,
where the loopback is selected. The switch for the DACs has been moved from
the DAPM_DAC to the "Analog XX Playback Mixer". In this way the DAC will be
powered while the audio playback is used or/and the loopback is enabled for
the channel.

The twl4030 codec powering has been reworked. Now the codec will be powered as
long as it does not receives the SND_SOC_BIAS_OFF event. The exceptions are
when the given change in the registers needs the codec power down/up cycle in
order to take effect. Otherwise the codec is on.

When the codec enters to STANDBY state and none of the loopback paths are
enabled, than the amplifiers, which are no in the DAPM path are forced to turn
off and the PLL is disabled. When playback/capture starts the disabled gains
are restored and the PLL is enabled.

When one of the loopback enabled in STANDBY mode, the disabled gains are
restored and the PLL is enabled also.

In short: the codec always goes to the lowest power state based on the
bias_level and the bypass_state.
Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
      7393958f
    • Mark Brown's avatar
      Merge branch 'for-2.6.29' into for-2.6.30 · 0bf5460d
      Mark Brown authored
      0bf5460d
    • Misael Lopez Cruz's avatar
      ASoC: OMAP: Initialize XCCR and RCCR registers in McBSP DAI driver · ef390c0b
      Misael Lopez Cruz authored 
      This patch explicitly initializes McBSP Transmit Configuration
Control Register (XCCR) and Receive Configuration Control
Register (RCCR) to their reset values. Reset values are 26 ns
of DX delay and Transmit DMA disabled for XCCR register;
receive full cycle mode enabled and Receive DMA disabled for
RCCR register.

This patch requires a counterpart in OMAP McBSP driver before
to apply it. The required changes in McBSP were sent and approved
in linux-omap mailing list and patch is going upstream
(commit 3127f8f8 from linux-omap-2.6
tree).
Signed-off-by: default avatarMisael Lopez Cruz <x0052729@ti.com>
[ jarkko.nikula@nokia.com: Commit id for counterpart patch corrected ]
Signed-off-by: default avatarJarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
      ef390c0b
    • Mark Brown's avatar
      ASoC: Fix null string usage with WM8753 DAIs · 9e70c1f0
      Mark Brown authored 
      The WM8753 driver multiplexes the DAI structures it exposes to the
outside world, leaving them uninitialised until the codec probes.  Since
the DAI name is used during the registration and setup process provide a
dummy name.
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
      9e70c1f0
  3. 28 Jan, 2009 1 commit
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  19. 14 Jan, 2009 1 commit