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ASoC: qdsp6: q6routing: Conditionally reset FrontEnd Mixer

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Stream IDs are reused across multiple BackEnd mixers, do not reset the
stream mixers if they are not already set for that particular FrontEnd.

Ex:
amixer cset iface=MIXER,name='SLIMBUS_0_RX Audio Mixer MultiMedia1' 1

would set the MultiMedia1 steam for SLIMBUS_0_RX, however doing below
command will reset previously setup MultiMedia1 stream, because both of them
are using MultiMedia1 PCM stream.

amixer cset iface=MIXER,name='SLIMBUS_2_RX Audio Mixer MultiMedia1' 0

reset the FrontEnd Mixers conditionally to fix this issue.

This is more noticeable in desktop setup, where in alsactl tries to restore
the alsa state and overwriting the previous mixer settings.

Fixes: e3a33673e8 ("ASoC: qdsp6: q6routing: Add q6routing driver")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20211116114721.12517-3-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Srinivas Kandagatla 2021-11-16 11:47:18 +00:00 committed by Mark Brown
parent 2f20640491
commit 861afeac79
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GPG Key ID: 24D68B725D5487D0
1 changed files with 5 additions and 1 deletions
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6
sound/soc/qcom/qdsp6/q6routing.c
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@ -495,7 +495,11 @@ static int msm_routing_put_audio_mixer(struct snd_kcontrol *kcontrol,
session->port_id = be_id;
snd_soc_dapm_mixer_update_power(dapm, kcontrol, 1, update);
} else {
session->port_id = -1;
if (session->port_id == be_id) {
session->port_id = -1;
return 0;
}
snd_soc_dapm_mixer_update_power(dapm, kcontrol, 0, update);
}