From 559c37e5f244c721f304641f2a8c903704d327aa Mon Sep 17 00:00:00 2001 From: =?utf8?q?=EC=9D=B4=EA=B2=BD=ED=83=9D?= Date: Tue, 31 Mar 2020 16:55:16 +0900 Subject: [PATCH] ASoC: dapm: connect virtual mux with default value commit 3bbbb7728fc853d71dbce4073fef9f281fbfb4dd upstream. Since a virtual mixer has no backing registers to decide which path to connect, it will try to match with initial state. This is to ensure that the default mixer choice will be correctly powered up during initialization. Invert flag is used to select initial state of the virtual switch. Since actual hardware can't be disconnected by virtual switch, connected is better choice as initial state in many cases. Signed-off-by: Gyeongtaek Lee Link: https://lore.kernel.org/r/01a301d60731$b724ea10$256ebe30$@samsung.com Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- sound/soc/soc-dapm.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index a04672411bef..73523cf0329b 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -751,7 +751,13 @@ static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i) val = max - val; p->connect = !!val; } else { - p->connect = 0; + /* since a virtual mixer has no backing registers to + * decide which path to connect, it will try to match + * with initial state. This is to ensure + * that the default mixer choice will be + * correctly powered up during initialization. + */ + p->connect = invert; } } -- 2.20.1