ASoC: soc-core: add snd_soc_dapm_init()

It is easy to read code if it is cleanly using paired function/naming,
like start <-> stop, register <-> unregister, etc, etc.
But, current ALSA SoC code is very random, unbalance, not paired, etc.
It is easy to create bug at the such code, and it will be difficult to
debug.

soc-dapm has snd_soc_dapm_free() which cleanups debugfs, widgets, list.
But, there is no paired initialize function.
This patch adds snd_soc_dapm_init() and initilaizing dapm

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87pnkw7lbj.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 10819b3e0b98..b6378f025836 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -4717,6 +4717,27 @@ void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
 }
 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
 
+void snd_soc_dapm_init(struct snd_soc_dapm_context *dapm,
+		       struct snd_soc_card *card,
+		       struct snd_soc_component *component)
+{
+	dapm->card		= card;
+	dapm->component		= component;
+	dapm->bias_level	= SND_SOC_BIAS_OFF;
+
+	if (component) {
+		dapm->dev		= component->dev;
+		dapm->idle_bias_off	= !component->driver->idle_bias_on,
+		dapm->suspend_bias_off	= component->driver->suspend_bias_off;
+	} else {
+		dapm->dev		= card->dev;
+	}
+
+	INIT_LIST_HEAD(&dapm->list);
+	list_add(&dapm->list, &card->dapm_list);
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_init);
+
 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
 {
 	struct snd_soc_card *card = dapm->card;