linux-kernel - [PATCH v2 2/2] ASoC: simple-card: Read pin switches conf from devicetree

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Date:   Fri, 26 Apr 2019 04:25:50 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>
Cc:     Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>, od@...c.me,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        Paul Cercueil <paul@...pouillou.net>
Subject: [PATCH v2 2/2] ASoC: simple-card: Read pin switches conf from devicetree

When the routing path between a widget (e.g. "Speaker") and the codec
goes through an external amplifier, having a pin switch for this widget
allows the amplifier to be disabled when the widget is not to be used
(e.g. when using headphones).

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
---

Notes:
    v2: - Rebase on top of for-next
        - Rename to asoc_simple_parse_pin_switches()

 sound/soc/generic/simple-card.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index 335ead0cbb8a..9b568f578bcd 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -464,6 +464,10 @@ static int simple_parse_of(struct asoc_simple_priv *priv)
 	if (ret < 0)
 		return ret;
 
+	ret = asoc_simple_parse_pin_switches(card, PREFIX);
+	if (ret < 0)
+		return ret;
+
 	/* Single/Muti DAI link(s) & New style of DT node */
 	memset(&li, 0, sizeof(li));
 	for (li.cpu = 1; li.cpu >= 0; li.cpu--) {
-- 
2.21.0.593.g511ec345e18