1 files changed, 64 insertions, 0 deletions
diff --git a/src/ec/google/chromeec/audio_codec/audio_codec.c b/src/ec/google/chromeec/audio_codec/audio_codec.c
new file mode 100644
index 0000000000..612b1f6995
--- /dev/null
+++ b/src/ec/google/chromeec/audio_codec/audio_codec.c
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <acpi/acpi_device.h>
+#include <acpi/acpigen.h>
+#include <console/console.h>
+#include <device/device.h>
+#include <device/path.h>
+#include "chip.h"
+
+#define CROS_EC_AUDIO_CODEC_HID		"GOOG0013"
+#define CROS_EC_AUDIO_CODEC_DDN		"Cros EC audio codec"
+
+static void crosec_audio_codec_fill_ssdt(const struct device *dev)
+{
+	const char *scope = acpi_device_scope(dev);
+	struct ec_google_chromeec_audio_codec_config *cfg = dev->chip_info;
+
+	if (!dev->enabled || !scope || !cfg)
+		return;
+
+	acpigen_write_scope(scope);
+
+	acpigen_write_device(acpi_device_name(dev));
+	acpigen_write_name_string("_HID", CROS_EC_AUDIO_CODEC_HID);
+	acpigen_write_name_integer("_UID", cfg->uid);
+	acpigen_write_name_string("_DDN", CROS_EC_AUDIO_CODEC_DDN);
+	acpigen_write_STA(acpi_device_status(dev));
+
+	acpigen_pop_len(); /* Device */
+	acpigen_pop_len(); /* Scope */
+
+	printk(BIOS_INFO, "%s: %s at %s\n", acpi_device_path(dev), CROS_EC_AUDIO_CODEC_DDN,
+						dev_path(dev));
+}
+
+static const char *crosec_audio_codec_acpi_name(const struct device *dev)
+{
+	struct ec_google_chromeec_audio_codec_config *cfg = dev->chip_info;
+	static char name[5];
+
+	if (cfg->name)
+		return cfg->name;
+
+	snprintf(name, sizeof(name), "ECA%X", dev->path.generic.id);
+	return name;
+}
+
+static struct device_operations crosec_audio_codec_ops = {
+	.read_resources		= noop_read_resources,
+	.set_resources		= noop_set_resources,
+	.acpi_name		= crosec_audio_codec_acpi_name,
+	.acpi_fill_ssdt		= crosec_audio_codec_fill_ssdt,
+	.scan_bus		= scan_static_bus,
+};
+
+static void crosec_audio_codec_enable(struct device *dev)
+{
+	dev->ops = &crosec_audio_codec_ops;
+}
+
+struct chip_operations ec_google_chromeec_audio_codec_ops = {
+	CHIP_NAME("CrosEC Audio Codec Device")
+	.enable_dev = crosec_audio_codec_enable
+};