4 files changed, 132 insertions, 0 deletions
diff --git a/src/drivers/sof/Kconfig b/src/drivers/sof/Kconfig
new file mode 100644
index 0000000000..3d8bdd3ec4
--- /dev/null
+++ b/src/drivers/sof/Kconfig
@@ -0,0 +1,3 @@
+config DRIVERS_AUDIO_SOF
+	bool
+	depends on HAVE_ACPI_TABLES
diff --git a/src/drivers/sof/Makefile.inc b/src/drivers/sof/Makefile.inc
new file mode 100644
index 0000000000..6faabe4500
--- /dev/null
+++ b/src/drivers/sof/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_DRIVERS_AUDIO_SOF) += sof.c
diff --git a/src/drivers/sof/chip.h b/src/drivers/sof/chip.h
new file mode 100644
index 0000000000..134c0deadc
--- /dev/null
+++ b/src/drivers/sof/chip.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __DRIVERS_AUDIO_SOF_H__
+#define __DRIVERS_AUDIO_SOF_H__
+
+#include <acpi/acpi_device.h>
+#include <stdint.h>
+
+/* Speaker topology */
+enum _spkr_tplg {
+	max98373 = 1,
+	max98360a,
+	max98357a,
+	max98390,
+	rt1011,
+	rt1015,
+};
+
+/* Jack topology */
+enum _jack_tplg {
+	cs42l42 = 1,
+	da7219,
+	nau8825,
+	rt5682,
+};
+
+/* Mic topology */
+enum _mic_tplg {
+	_1ch = 1,
+	_2ch_pdm0,
+	_2ch_pdm1,
+	_4ch,
+};
+
+
+
+struct drivers_sof_config {
+	unsigned int spkr_tplg;
+	unsigned int jack_tplg;
+	unsigned int mic_tplg;
+};
+
+#endif /* __DRIVERS_AUDIO_SOF_H__ */
diff --git a/src/drivers/sof/sof.c b/src/drivers/sof/sof.c
new file mode 100644
index 0000000000..d11f7300c0
--- /dev/null
+++ b/src/drivers/sof/sof.c
@@ -0,0 +1,85 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpi_device.h>
+#include <acpi/acpigen.h>
+#include <device/device.h>
+#include <device/path.h>
+#include <string.h>
+
+#include "chip.h"
+
+static const char *get_spkr_tplg_str(unsigned int index)
+{
+	switch (index) {
+		case 1: return "max98373";
+		case 2: return "max98360a";
+		case 3: return "max98357a";
+		case 4: return "max98390";
+		case 5: return "rt1011";
+		case 6: return "rt1015";
+		default: return "default";
+	}
+}
+
+static const char *get_jack_tplg_str(unsigned int index)
+{
+	switch (index) {
+		case 1: return "cs42l42";
+		case 2: return "da7219";
+		case 3: return "nau8825";
+		case 4: return "rt5682";
+		default: return "default";
+	}
+}
+
+static const char *get_mic_tplg_str(unsigned int index)
+{
+	switch (index) {
+		case 1: return "1ch";
+		case 2: return "2ch-pdm0";
+		case 3: return "2ch-pdm1";
+		case 4: return "4ch";
+		default: return "default";
+	}
+}
+
+static void sof_fill_ssdt_generator(const struct device *dev)
+{
+	struct drivers_sof_config *config = dev->chip_info;
+	const char *scope = acpi_device_scope(dev);
+	struct acpi_dp *dsd;
+
+	if (!dev->enabled || !config || !scope)
+		return;
+
+	/* Device */
+	acpigen_write_scope(scope);
+
+	/* DSD */
+	dsd = acpi_dp_new_table("_DSD");
+	acpi_dp_add_string(dsd, "speaker-tplg",
+				get_spkr_tplg_str(config->spkr_tplg));
+	acpi_dp_add_string(dsd, "hp-tplg",
+				get_jack_tplg_str(config->jack_tplg));
+	acpi_dp_add_string(dsd, "mic-tplg",
+				get_mic_tplg_str(config->mic_tplg));
+	acpi_dp_write(dsd);
+	acpigen_pop_len(); /* Scope */
+}
+
+
+static struct device_operations sof_ops = {
+	.read_resources		= noop_read_resources,
+	.set_resources		= noop_set_resources,
+	.acpi_fill_ssdt		= sof_fill_ssdt_generator,
+};
+
+static void sof_enable(struct device *dev)
+{
+	dev->ops = &sof_ops;
+}
+
+struct chip_operations drivers_sof_ops = {
+	CHIP_NAME("SOF")
+	.enable_dev = sof_enable
+};