1 files changed, 261 insertions, 0 deletions
diff --git a/sound/soc/soc-card.c b/sound/soc/soc-card.c
new file mode 100644
index 000000000..285ab4c9c
--- /dev/null
+++ b/sound/soc/soc-card.c
@@ -0,0 +1,261 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// soc-card.c
+//
+// Copyright (C) 2019 Renesas Electronics Corp.
+// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+//
+#include <sound/soc.h>
+#include <sound/jack.h>
+
+#define soc_card_ret(dai, ret) _soc_card_ret(dai, __func__, ret)
+static inline int _soc_card_ret(struct snd_soc_card *card,
+				const char *func, int ret)
+{
+	switch (ret) {
+	case -EPROBE_DEFER:
+	case -ENOTSUPP:
+	case 0:
+		break;
+	default:
+		dev_err(card->dev,
+			"ASoC: error at %s on %s: %d\n",
+			func, card->name, ret);
+	}
+
+	return ret;
+}
+
+struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
+					       const char *name)
+{
+	struct snd_card *card = soc_card->snd_card;
+	struct snd_kcontrol *kctl;
+
+	if (unlikely(!name))
+		return NULL;
+
+	list_for_each_entry(kctl, &card->controls, list)
+		if (!strncmp(kctl->id.name, name, sizeof(kctl->id.name)))
+			return kctl;
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_card_get_kcontrol);
+
+static int jack_new(struct snd_soc_card *card, const char *id, int type,
+		    struct snd_soc_jack *jack, bool initial_kctl)
+{
+	mutex_init(&jack->mutex);
+	jack->card = card;
+	INIT_LIST_HEAD(&jack->pins);
+	INIT_LIST_HEAD(&jack->jack_zones);
+	BLOCKING_INIT_NOTIFIER_HEAD(&jack->notifier);
+
+	return snd_jack_new(card->snd_card, id, type, &jack->jack, initial_kctl, false);
+}
+
+/**
+ * snd_soc_card_jack_new - Create a new jack without pins
+ * @card:  ASoC card
+ * @id:    an identifying string for this jack
+ * @type:  a bitmask of enum snd_jack_type values that can be detected by
+ *         this jack
+ * @jack:  structure to use for the jack
+ *
+ * Creates a new jack object without pins. If adding pins later,
+ * snd_soc_card_jack_new_pins() should be used instead with 0 as num_pins
+ * argument.
+ *
+ * Returns zero if successful, or a negative error code on failure.
+ * On success jack will be initialised.
+ */
+int snd_soc_card_jack_new(struct snd_soc_card *card, const char *id, int type,
+			  struct snd_soc_jack *jack)
+{
+	return soc_card_ret(card, jack_new(card, id, type, jack, true));
+}
+EXPORT_SYMBOL_GPL(snd_soc_card_jack_new);
+
+/**
+ * snd_soc_card_jack_new_pins - Create a new jack with pins
+ * @card:  ASoC card
+ * @id:    an identifying string for this jack
+ * @type:  a bitmask of enum snd_jack_type values that can be detected by
+ *         this jack
+ * @jack:  structure to use for the jack
+ * @pins:  Array of jack pins to be added to the jack or NULL
+ * @num_pins: Number of elements in the @pins array
+ *
+ * Creates a new jack object with pins. If not adding pins,
+ * snd_soc_card_jack_new() should be used instead.
+ *
+ * Returns zero if successful, or a negative error code on failure.
+ * On success jack will be initialised.
+ */
+int snd_soc_card_jack_new_pins(struct snd_soc_card *card, const char *id,
+			       int type, struct snd_soc_jack *jack,
+			       struct snd_soc_jack_pin *pins,
+			       unsigned int num_pins)
+{
+	int ret;
+
+	ret = jack_new(card, id, type, jack, false);
+	if (ret)
+		goto end;
+
+	if (num_pins)
+		ret = snd_soc_jack_add_pins(jack, num_pins, pins);
+end:
+	return soc_card_ret(card, ret);
+}
+EXPORT_SYMBOL_GPL(snd_soc_card_jack_new_pins);
+
+int snd_soc_card_suspend_pre(struct snd_soc_card *card)
+{
+	int ret = 0;
+
+	if (card->suspend_pre)
+		ret = card->suspend_pre(card);
+
+	return soc_card_ret(card, ret);
+}
+
+int snd_soc_card_suspend_post(struct snd_soc_card *card)
+{
+	int ret = 0;
+
+	if (card->suspend_post)
+		ret = card->suspend_post(card);
+
+	return soc_card_ret(card, ret);
+}
+
+int snd_soc_card_resume_pre(struct snd_soc_card *card)
+{
+	int ret = 0;
+
+	if (card->resume_pre)
+		ret = card->resume_pre(card);
+
+	return soc_card_ret(card, ret);
+}
+
+int snd_soc_card_resume_post(struct snd_soc_card *card)
+{
+	int ret = 0;
+
+	if (card->resume_post)
+		ret = card->resume_post(card);
+
+	return soc_card_ret(card, ret);
+}
+
+int snd_soc_card_probe(struct snd_soc_card *card)
+{
+	if (card->probe) {
+		int ret = card->probe(card);
+
+		if (ret < 0)
+			return soc_card_ret(card, ret);
+
+		/*
+		 * It has "card->probe" and "card->late_probe" callbacks.
+		 * So, set "probed" flag here, because it needs to care
+		 * about "late_probe".
+		 *
+		 * see
+		 *	snd_soc_bind_card()
+		 *	snd_soc_card_late_probe()
+		 */
+		card->probed = 1;
+	}
+
+	return 0;
+}
+
+int snd_soc_card_late_probe(struct snd_soc_card *card)
+{
+	if (card->late_probe) {
+		int ret = card->late_probe(card);
+
+		if (ret < 0)
+			return soc_card_ret(card, ret);
+	}
+
+	/*
+	 * It has "card->probe" and "card->late_probe" callbacks,
+	 * and "late_probe" callback is called after "probe".
+	 * This means, we can set "card->probed" flag afer "late_probe"
+	 * for all cases.
+	 *
+	 * see
+	 *	snd_soc_bind_card()
+	 *	snd_soc_card_probe()
+	 */
+	card->probed = 1;
+
+	return 0;
+}
+
+void snd_soc_card_fixup_controls(struct snd_soc_card *card)
+{
+	if (card->fixup_controls)
+		card->fixup_controls(card);
+}
+
+int snd_soc_card_remove(struct snd_soc_card *card)
+{
+	int ret = 0;
+
+	if (card->probed &&
+	    card->remove)
+		ret = card->remove(card);
+
+	card->probed = 0;
+
+	return soc_card_ret(card, ret);
+}
+
+int snd_soc_card_set_bias_level(struct snd_soc_card *card,
+				struct snd_soc_dapm_context *dapm,
+				enum snd_soc_bias_level level)
+{
+	int ret = 0;
+
+	if (card && card->set_bias_level)
+		ret = card->set_bias_level(card, dapm, level);
+
+	return soc_card_ret(card, ret);
+}
+
+int snd_soc_card_set_bias_level_post(struct snd_soc_card *card,
+				     struct snd_soc_dapm_context *dapm,
+				     enum snd_soc_bias_level level)
+{
+	int ret = 0;
+
+	if (card && card->set_bias_level_post)
+		ret = card->set_bias_level_post(card, dapm, level);
+
+	return soc_card_ret(card, ret);
+}
+
+int snd_soc_card_add_dai_link(struct snd_soc_card *card,
+			      struct snd_soc_dai_link *dai_link)
+{
+	int ret = 0;
+
+	if (card->add_dai_link)
+		ret = card->add_dai_link(card, dai_link);
+
+	return soc_card_ret(card, ret);
+}
+EXPORT_SYMBOL_GPL(snd_soc_card_add_dai_link);
+
+void snd_soc_card_remove_dai_link(struct snd_soc_card *card,
+				  struct snd_soc_dai_link *dai_link)
+{
+	if (card->remove_dai_link)
+		card->remove_dai_link(card, dai_link);
+}
+EXPORT_SYMBOL_GPL(snd_soc_card_remove_dai_link);