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From: Mark Brown <broonie@kernel.org>
To: Liam Girdwood <lgirdwood@gmail.com>
Cc: alsa-devel@alsa-project.org, Mark Brown <broonie@kernel.org>
Subject: [PATCH] ASoC: es8328: Fix event generation for deemphasis control
Date: Fri,  3 Jun 2022 14:39:37 +0200	[thread overview]
Message-ID: <20220603123937.4013603-1-broonie@kernel.org> (raw)

Currently the put() method for the deemphasis control returns 0 when a new
value is written to the control even if the value changed, meaning events
are not generated. Fix this, skip the work of updating the value when it is
unchanged and then return 1 after having done so.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/codecs/es8328.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/es8328.c b/sound/soc/codecs/es8328.c
index 3f00ead97006..dd53dfd87b04 100644
--- a/sound/soc/codecs/es8328.c
+++ b/sound/soc/codecs/es8328.c
@@ -161,13 +161,16 @@ static int es8328_put_deemph(struct snd_kcontrol *kcontrol,
 	if (deemph > 1)
 		return -EINVAL;
 
+	if (es8328->deemph == deemph)
+		return 0;
+
 	ret = es8328_set_deemph(component);
 	if (ret < 0)
 		return ret;
 
 	es8328->deemph = deemph;
 
-	return 0;
+	return 1;
 }
 
 
-- 
2.30.2


             reply	other threads:[~2022-06-03 12:40 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-03 12:39 Mark Brown [this message]
2022-06-07 10:46 ` Mark Brown

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