Messages in this thread | | | Date | Mon, 13 Jul 2009 10:15:38 +0100 | From | Mark Brown <> | Subject | Re: [PATCH] New ASoC Drivers for ADI AD1938 codec |
| |
On Mon, Jul 13, 2009 at 04:12:14PM +0800, 宋宝华 wrote:
> I want to use ADC/DAC widgets. > static const struct snd_soc_dapm_widget ad1938_dapm_widgets[] = { > SND_SOC_DAPM_DAC("DAC", "HiFi Playback", AD1938_DAC_CTRL0, 0, 1), > SND_SOC_DAPM_ADC("ADC", "HiFi Capture", AD1938_ADC_CTRL0, 0, 1), > }; > But for this AD1938 codec, DAC's work depends on ADC is powered on in > hardware. I think there is no any mechanism to handle this kind of > strange depending now. So is there a generic way to handle this?
Make the ADC power a SND_SOC_DAPM_SUPPLY() supplying both the DAC and the ADC, with the ADC widget marged as having no power management. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |