build/patch/kernel/archive/sunxi-6.2/patches.megous/ASoC-codec-rt5640-Resolve-failure-to-set-DMIC-clock-after-playb.patch

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From 9426050937d6fc2ba5045054a73d6a14d88ad65d Mon Sep 17 00:00:00 2001
From: Ondrej Jirman <megi@xff.cz>
Date: Sat, 27 Aug 2022 20:48:32 +0200
Subject: [PATCH 363/391] ASoC: codec: rt5640: Resolve failure to set DMIC
clock after playback
rt5640_set_dai_sysclk is called with freq == 0 when playback stops. This
causes DMIC setup code to fail. I2S interface doesn't need to be active
for codec to work, so don't clear rt5640->sysclk after rt5640_set_dai_sysclk
is called with freq == 0.
Signed-off-by: Ondrej Jirman <megi@xff.cz>
---
sound/soc/codecs/rt5640.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
index 814466086..9b8d84c99 100644
--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -1840,6 +1840,9 @@ static int rt5640_set_dai_sysclk(struct snd_soc_dai *dai,
unsigned int reg_val = 0;
unsigned int pll_bit = 0;
+ if (freq == 0)
+ return 0;
+
switch (clk_id) {
case RT5640_SCLK_S_MCLK:
reg_val |= RT5640_SCLK_SRC_MCLK;
--
2.35.3