2 files changed, 36 insertions, 0 deletions
diff --git a/sound/soc/intel/common/sst-acpi.h b/sound/soc/intel/common/sst-acpi.h
index 3ee3b7ab5d03..4dcfb7e5ed70 100644
--- a/sound/soc/intel/common/sst-acpi.h
+++ b/sound/soc/intel/common/sst-acpi.h
@@ -14,6 +14,9 @@
 
 #include <linux/acpi.h>
 
+/* translation fron HID to I2C name, needed for DAI codec_name */
+const char *sst_acpi_find_name_from_hid(const u8 hid[ACPI_ID_LEN]);
+
 /* acpi match */
 struct sst_acpi_mach *sst_acpi_find_machine(struct sst_acpi_mach *machines);
 
diff --git a/sound/soc/intel/common/sst-match-acpi.c b/sound/soc/intel/common/sst-match-acpi.c
index cf2c27cd8651..2c0e7fca97db 100644
--- a/sound/soc/intel/common/sst-match-acpi.c
+++ b/sound/soc/intel/common/sst-match-acpi.c
@@ -16,6 +16,39 @@
 
 #include "sst-acpi.h"
 
+static acpi_status sst_acpi_find_name(acpi_handle handle, u32 level,
+				      void *context, void **ret)
+{
+	struct acpi_device *adev;
+	const char *name = NULL;
+
+	if (acpi_bus_get_device(handle, &adev))
+		return AE_OK;
+
+	if (adev->status.present && adev->status.functional) {
+		name = acpi_dev_name(adev);
+		*(const char **)ret = name;
+		return AE_CTRL_TERMINATE;
+	}
+
+	return AE_OK;
+}
+
+const char *sst_acpi_find_name_from_hid(const u8 hid[ACPI_ID_LEN])
+{
+	const char *name = NULL;
+	acpi_status status;
+
+	status = acpi_get_devices(hid, sst_acpi_find_name, NULL,
+				  (void **)&name);
+
+	if (ACPI_FAILURE(status) || name[0] == '\0')
+		return NULL;
+
+	return name;
+}
+EXPORT_SYMBOL_GPL(sst_acpi_find_name_from_hid);
+
 static acpi_status sst_acpi_mach_match(acpi_handle handle, u32 level,
 				       void *context, void **ret)
 {