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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: Seth Forshee <seth.forshee@gmail.com>
Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Seth Forshee 2007-04-16 15:36:42 +02:00 committed by Jaroslav Kysela
parent 30652c4506
commit 1e39221eba
1 changed files with 4 additions and 2 deletions
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6
sound/soc/soc-dapm.c
View File

@ -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;
}