From 97126ce8ce8d6f023b8ce3b71c3df882a2951605 Mon Sep 17 00:00:00 2001
From: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Date: Fri, 13 May 2016 16:45:16 +0100
Subject: ASoC: arizona: Add voice trigger output widget

In some situations the voice control firmware will by used
to only provide a trigger notification event. In this case a
compressed stream will not be opened by user-space, as such we
need to provide a virtual output to power on the DSP in this
use-case. This patch adds a virtual output 'DSP Voice Trigger'
that can be used for this, and a switch that lets it be connected
to the core when required.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/codecs/arizona.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'sound/soc/codecs/arizona.h')

diff --git a/sound/soc/codecs/arizona.h b/sound/soc/codecs/arizona.h
index ce0531b8c632..02d836cb5fb1 100644
--- a/sound/soc/codecs/arizona.h
+++ b/sound/soc/codecs/arizona.h
@@ -248,6 +248,8 @@ extern const struct soc_enum arizona_anc_input_src[];
 extern const struct soc_enum arizona_anc_ng_enum;
 extern const struct soc_enum arizona_output_anc_src[];
 
+extern const struct snd_kcontrol_new arizona_voice_trigger_switch[];
+
 extern int arizona_in_ev(struct snd_soc_dapm_widget *w,
 			 struct snd_kcontrol *kcontrol,
 			 int event);
-- 
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