1 files changed, 103 insertions, 0 deletions
diff --git a/sound/hda/codecs/side-codecs/hda_component.h b/sound/hda/codecs/side-codecs/hda_component.h
new file mode 100644
index 000000000000..7ee37154749f
--- /dev/null
+++ b/sound/hda/codecs/side-codecs/hda_component.h
@@ -0,0 +1,103 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * HD audio Component Binding Interface
+ *
+ * Copyright (C) 2021 Cirrus Logic, Inc. and
+ *                    Cirrus Logic International Semiconductor Ltd.
+ */
+
+#ifndef __HDA_COMPONENT_H__
+#define __HDA_COMPONENT_H__
+
+#include <linux/acpi.h>
+#include <linux/component.h>
+#include <linux/mutex.h>
+#include <sound/hda_codec.h>
+
+#define HDA_MAX_COMPONENTS	4
+#define HDA_MAX_NAME_SIZE	50
+
+struct hda_component {
+	struct device *dev;
+	char name[HDA_MAX_NAME_SIZE];
+	struct acpi_device *adev;
+	bool acpi_notifications_supported;
+	void (*acpi_notify)(acpi_handle handle, u32 event, struct device *dev);
+	void (*pre_playback_hook)(struct device *dev, int action);
+	void (*playback_hook)(struct device *dev, int action);
+	void (*post_playback_hook)(struct device *dev, int action);
+};
+
+struct hda_component_parent {
+	struct mutex mutex;
+	struct hda_codec *codec;
+	struct hda_component comps[HDA_MAX_COMPONENTS];
+};
+
+#ifdef CONFIG_ACPI
+void hda_component_acpi_device_notify(struct hda_component_parent *parent,
+				      acpi_handle handle, u32 event, void *data);
+int hda_component_manager_bind_acpi_notifications(struct hda_codec *cdc,
+						  struct hda_component_parent *parent,
+						  acpi_notify_handler handler, void *data);
+void hda_component_manager_unbind_acpi_notifications(struct hda_codec *cdc,
+						     struct hda_component_parent *parent,
+						     acpi_notify_handler handler);
+#else
+static inline void hda_component_acpi_device_notify(struct hda_component_parent *parent,
+						    acpi_handle handle,
+						    u32 event,
+						    void *data)
+{
+}
+
+static inline int hda_component_manager_bind_acpi_notifications(struct hda_codec *cdc,
+								struct hda_component_parent *parent,
+								acpi_notify_handler handler,
+								void *data)
+
+{
+	return 0;
+}
+
+static inline void hda_component_manager_unbind_acpi_notifications(struct hda_codec *cdc,
+								   struct hda_component_parent *parent,
+								   acpi_notify_handler handler)
+{
+}
+#endif /* ifdef CONFIG_ACPI */
+
+void hda_component_manager_playback_hook(struct hda_component_parent *parent, int action);
+
+int hda_component_manager_init(struct hda_codec *cdc,
+			       struct hda_component_parent *parent, int count,
+			       const char *bus, const char *hid,
+			       const char *match_str,
+			       const struct component_master_ops *ops);
+
+void hda_component_manager_free(struct hda_component_parent *parent,
+				const struct component_master_ops *ops);
+
+int hda_component_manager_bind(struct hda_codec *cdc, struct hda_component_parent *parent);
+
+static inline struct hda_component *hda_component_from_index(struct hda_component_parent *parent,
+							     int index)
+{
+	if (!parent)
+		return NULL;
+
+	if (index < 0 || index >= ARRAY_SIZE(parent->comps))
+		return NULL;
+
+	return &parent->comps[index];
+}
+
+static inline void hda_component_manager_unbind(struct hda_codec *cdc,
+						struct hda_component_parent *parent)
+{
+	mutex_lock(&parent->mutex);
+	component_unbind_all(hda_codec_dev(cdc), parent);
+	mutex_unlock(&parent->mutex);
+}
+
+#endif /* ifndef __HDA_COMPONENT_H__ */