From: Peter Ujfalusi <peter.ujfalusi@nokia.com>
To: ext Mark Brown <broonie@sirena.org.uk>
Cc: sakoman@gmail.com, alsa-devel@alsa-project.org
Subject: Re: [PATCH 0/8] ASoC: TWL4030: DAPM implementation for outputs (playback)
Date: Tue, 9 Dec 2008 08:51:58 +0200 [thread overview]
Message-ID: <200812090851.58378.peter.ujfalusi@nokia.com> (raw)
In-Reply-To: <20081208132040.GJ5159@sirena.org.uk>
On Monday 08 December 2008 15:20:41 ext Mark Brown wrote:
> On Mon, Dec 08, 2008 at 10:09:00AM +0200, Peter Ujfalusi wrote:
> > Based on the output routing selections all the corresponding DAC and
> > analog PGA on the chain will be powered on.
>
> One other question: how does this all interact with the existing power
> control in set_bias_level()?
This is a good question.
As I see: when the twl4030_power_down is called from the
twl4030_set_bias_level (SND_SOC_BIAS_STANDBY, SND_SOC_BIAS_OFF) it sets the
codec to power-off state (CODEC_MODE:CODECPDZ = 0), which effectively turns
off the digital filter, analog section, so basically everything.
When the CODECPDZ is 0, APGA, DAC, analog output settings have no effect (they
are powered off)
--
Péter
next prev parent reply other threads:[~2008-12-09 6:52 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-08 8:09 [PATCH 0/8] ASoC: TWL4030: DAPM implementation for outputs (playback) Peter Ujfalusi
2008-12-08 8:09 ` [PATCH 1/8] ASoC: TWL4030: Correct DAPM_DAC with power control Peter Ujfalusi
2008-12-08 8:09 ` [PATCH 2/8] ASoC: TWL4030: Add Analog PGA control switch to DAPM Peter Ujfalusi
2008-12-08 8:09 ` [PATCH 3/8] ASoC: TWL4030: Add DAPM event handler for output MUX selection Peter Ujfalusi
2008-12-08 8:09 ` [PATCH 4/8] ASoC: TWL4030: DAPM mapping of the Earpiece output Peter Ujfalusi
2008-12-08 8:09 ` [PATCH 5/8] ASoC: TWL4030: DAPM mapping of the PreDriv outputs Peter Ujfalusi
2008-12-08 8:09 ` [PATCH 6/8] ASoC: TWL4030: DAPM mapping of the Headset outputs Peter Ujfalusi
2008-12-08 8:09 ` [PATCH 7/8] ASoC: TWL4030: DAPM mapping of the Carkit outputs Peter Ujfalusi
2008-12-08 8:09 ` [PATCH 8/8] ASoC: TWL4030: DAPM mapping of the Handsfree outputs Peter Ujfalusi
2008-12-08 11:28 ` [PATCH 5/8] ASoC: TWL4030: DAPM mapping of the PreDriv outputs Mark Brown
2008-12-08 11:40 ` Peter Ujfalusi
2008-12-08 13:50 ` Mark Brown
2008-12-08 11:24 ` [PATCH 4/8] ASoC: TWL4030: DAPM mapping of the Earpiece output Mark Brown
2008-12-08 11:23 ` [PATCH 2/8] ASoC: TWL4030: Add Analog PGA control switch to DAPM Mark Brown
2008-12-08 12:06 ` Peter Ujfalusi
2008-12-08 12:35 ` Mark Brown
2008-12-08 11:31 ` [PATCH 0/8] ASoC: TWL4030: DAPM implementation for outputs (playback) Mark Brown
2008-12-08 13:20 ` Mark Brown
2008-12-09 6:51 ` Peter Ujfalusi [this message]
2008-12-09 9:47 ` Mark Brown
2008-12-09 10:07 ` Peter Ujfalusi
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