From c4ff357ada4fc7a73d899a496b636c698519b958 Mon Sep 17 00:00:00 2001
From: Barry Song <21cnbao@gmail.com>
Date: Wed, 12 Aug 2009 11:34:25 +0800
Subject: [PATCH] ASoC: add output/input widgets in ad1938 to make dac/adc
 dynamic PM work

According to the function dapm_dac_check_power() in
sound/soc/soc-dapm.c, dac power can't be on/off stand-alone without any
output widget as sink. And according to dapm_adc_check_power(), adc
power can't be on/off stand-alone without any input widget as source. So
we can't only define some stand-alone SND_SOC_DAPM_DAC/SND_SOC_DAPM_ADC
to hope their power can be managed dynamically.

Signed-off-by: Barry Song <21cnbao@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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