[alsa-devel] [PATCH] ASoC: UDA134X Codec: Fix mute/unmute code mistake and add ADC/DAC power control support

Mark Brown broonie at opensource.wolfsonmicro.com
Mon Aug 17 12:32:49 CEST 2009

On Mon, Aug 17, 2009 at 04:36:56PM +0800, Shine Liu wrote:
> There is a mistake in current uda134x_mute function: mute_reg has been
> changed in line 162 or line 164, so uda134x_write should write
> "mute_reg" but not "mute_reg & ~(1<<2)" to 
> UDA134X_DATA010.

This is OK but please split it out into a separate patch and resend

> Besides, because there is no DAPM configuration for uda134x, when system
> starts up, snd_soc_int_card calls snd_soc_dapm_new_widgets, and
> snd_soc_dapm_new_widgets calls dapm_power_widgets. In function
> dapm_power_widgets, codec->dapm_widgets has no list entry, so sys_power
> retains it's original value zero. Then

...this isn't, partly because I can't really follow what you're trying
to do here.  It looks awfully like you're trying to implement DAPM
support - certainly things like adding the switches for DAC and ADC
power shouldn't be there, they should be automatically managed in the

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