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Commit 1e39221e authored by Seth Forshee's avatar Seth Forshee Committed by Jaroslav Kysela
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[ALSA] ASoC DAPM switching for reentrant codec paths 



This patch fixes an issue whereby power was applied to any inactive
analog path that would leave and reenter a codec (e.g. ACOP -> ACIN on
WM8753).  This change now checks for such paths and DAPM will power them
down when not in use.

Signed-off-by: default avatarSeth Forshee <seth.forshee@gmail.com>
Signed-off-by: default avatarLiam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent 30652c45

sound/soc/soc-dapm.c

+4 −2
Original line number Diff line number Diff line
@@ -882,13 +882,15 @@ int snd_soc_dapm_connect_input(struct snd_soc_codec *codec, const char *sink, 
	if (wsink->id == snd_soc_dapm_input) {

		if (wsource->id == snd_soc_dapm_micbias ||

			wsource->id == snd_soc_dapm_mic ||

			wsink->id == snd_soc_dapm_line)

			wsink->id == snd_soc_dapm_line ||

			wsink->id == snd_soc_dapm_output)

			wsink->ext = 1;

	}

	if (wsource->id == snd_soc_dapm_output) {

		if (wsink->id == snd_soc_dapm_spk ||

			wsink->id == snd_soc_dapm_hp ||

			wsink->id == snd_soc_dapm_line)

			wsink->id == snd_soc_dapm_line ||

			wsink->id == snd_soc_dapm_input)

			wsource->ext = 1;

	}