[PATCH AUTOSEL 5.10 06/15] ASoC: cs47l15: Fix event generation for low power mux control

Sasha Levin
2022-07-14T04:34:47Z

From: Charles Keepax <ckeepax@opensource.cirrus.com>

[ Upstream commit 7f103af4a10f375b9b346b4d0b730f6a66b8c451 ]

cs47l15_in1_adc_put always returns zero regardless of if the control
value was updated. This results in missing notifications to user-space
of the control change. Update the handling to return 1 when the value is
changed.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220623105120.1981154-3-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/cs47l15.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/cs47l15.c b/sound/soc/codecs/cs47l15.c
index 254f9d96e766..7c20642f160a 100644
--- a/sound/soc/codecs/cs47l15.c
+++ b/sound/soc/codecs/cs47l15.c
@@ -122,6 +122,9 @@ static int cs47l15_in1_adc_put(struct snd_kcontrol *kcontrol,
snd_soc_kcontrol_component(kcontrol);
struct cs47l15 *cs47l15 = snd_soc_component_get_drvdata(component);

+ if (!!ucontrol->value.integer.value[0] == cs47l15->in1_lp_mode)
+ return 0;
+
switch (ucontrol->value.integer.value[0]) {
case 0:
/* Set IN1 to normal mode */
@@ -150,7 +153,7 @@ static int cs47l15_in1_adc_put(struct snd_kcontrol *kcontrol,
break;
}

- return 0;
+ return 1;
}

static const struct snd_kcontrol_new cs47l15_snd_controls[] = {
--
2.35.1