This is a note to let you know that I've just added the patch titled
ASoC: wm8994: Ensure the device is resumed in wm89xx_mic_detect functions
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-wm8994-ensure-the-device-is-resumed-in-wm89xx_m.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7c3ba5cbecbb85fc789127fbbde2405652993720
Author: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
Date: Thu Aug 27 19:33:57 2020 +0200
ASoC: wm8994: Ensure the device is resumed in wm89xx_mic_detect functions
[ Upstream commit f5a2cda4f1db89776b64c4f0f2c2ac609527ac70 ]
When the wm8958_mic_detect, wm8994_mic_detect functions get called from
the machine driver, e.g. from the card's late_probe() callback, the CODEC
device may be PM runtime suspended and any regmap writes have no effect.
Add PM runtime calls to these functions to ensure the device registers
are updated as expected.
This suppresses an error during boot
"wm8994-codec: ASoC: error at snd_soc_component_update_bits on wm8994-codec"
caused by the regmap access error due to the cache_only flag being set.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
Acked-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Acked-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20200827173357.31891-2-s.nawrocki@xxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index cd089b4143029..e3e069277a3ff 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -3376,6 +3376,8 @@ int wm8994_mic_detect(struct snd_soc_component *component, struct snd_soc_jack *
return -EINVAL;
}
+ pm_runtime_get_sync(component->dev);
+
switch (micbias) {
case 1:
micdet = &wm8994->micdet[0];
@@ -3423,6 +3425,8 @@ int wm8994_mic_detect(struct snd_soc_component *component, struct snd_soc_jack *
snd_soc_dapm_sync(dapm);
+ pm_runtime_put(component->dev);
+
return 0;
}
EXPORT_SYMBOL_GPL(wm8994_mic_detect);
@@ -3790,6 +3794,8 @@ int wm8958_mic_detect(struct snd_soc_component *component, struct snd_soc_jack *
return -EINVAL;
}
+ pm_runtime_get_sync(component->dev);
+
if (jack) {
snd_soc_dapm_force_enable_pin(dapm, "CLK_SYS");
snd_soc_dapm_sync(dapm);
@@ -3858,6 +3864,8 @@ int wm8958_mic_detect(struct snd_soc_component *component, struct snd_soc_jack *
snd_soc_dapm_sync(dapm);
}
+ pm_runtime_put(component->dev);
+
return 0;
}
EXPORT_SYMBOL_GPL(wm8958_mic_detect);
