4 files changed, 193 insertions, 0 deletions
diff --git a/src/drivers/soundwire/alc5682/Kconfig b/src/drivers/soundwire/alc5682/Kconfig
new file mode 100644
index 0000000000..5d68c38b59
--- /dev/null
+++ b/src/drivers/soundwire/alc5682/Kconfig
@@ -0,0 +1,2 @@
+config DRIVERS_SOUNDWIRE_ALC5682
+	bool
diff --git a/src/drivers/soundwire/alc5682/Makefile.inc b/src/drivers/soundwire/alc5682/Makefile.inc
new file mode 100644
index 0000000000..eab940cbb1
--- /dev/null
+++ b/src/drivers/soundwire/alc5682/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_DRIVERS_SOUNDWIRE_ALC5682) += alc5682.c
diff --git a/src/drivers/soundwire/alc5682/alc5682.c b/src/drivers/soundwire/alc5682/alc5682.c
new file mode 100644
index 0000000000..79ed610ab8
--- /dev/null
+++ b/src/drivers/soundwire/alc5682/alc5682.c
@@ -0,0 +1,179 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpigen.h>
+#include <acpi/acpi_device.h>
+#include <acpi/acpi_soundwire.h>
+#include <device/device.h>
+#include <device/mipi_ids.h>
+#include <device/path.h>
+#include <device/soundwire.h>
+#include <stdio.h>
+
+#include "chip.h"
+
+static struct soundwire_address alc5682_address = {
+	.version = SOUNDWIRE_VERSION_1_1,
+	.manufacturer_id = MIPI_MFG_ID_REALTEK,
+	.part_id = MIPI_DEV_ID_REALTEK_ALC5682,
+	.class = MIPI_CLASS_NONE
+};
+
+static struct soundwire_slave alc5682_slave = {
+	.wake_up_unavailable = false,
+	.test_mode_supported = false,
+	.clock_stop_mode1_supported = true,
+	.simplified_clockstopprepare_sm_supported = true,
+	.clockstopprepare_hard_reset_behavior = false,
+	.highPHY_capable = false,
+	.paging_supported = false,
+	.bank_delay_supported = false,
+	.port15_read_behavior = false,
+	.source_port_list = SOUNDWIRE_PORT(1) | SOUNDWIRE_PORT(2) |
+			    SOUNDWIRE_PORT(3) | SOUNDWIRE_PORT(4),
+	.sink_port_list = SOUNDWIRE_PORT(1) | SOUNDWIRE_PORT(2) |
+			  SOUNDWIRE_PORT(3) | SOUNDWIRE_PORT(4)
+};
+
+static struct soundwire_bra_mode alc5682_dp0_bra_mode = {
+	.bus_frequency_configs_count = 7,
+	.bus_frequency_configs = {
+		1000 * KHz,	/* 1 MHz */
+		2400 * KHz,	/* 2.4 MHz */
+		3000 * KHz,	/* 3 MHz */
+		4000 * KHz,	/* 4 MHz */
+		4800 * KHz,	/* 4.8 MHz */
+		9600 * KHz,	/* 9.6 MHz */
+		12000 * KHz,	/* 12 MHz */
+	},
+	.max_data_per_frame = 470,
+	.min_us_between_transactions = 0
+};
+
+static struct soundwire_dp0 alc5682_dp0 = {
+	.port_max_wordlength = 64,
+	.port_min_wordlength = 1,
+	.bra_imp_def_response_supported = false,
+	.simplified_channel_prepare_sm = true,
+	.imp_def_dp0_interrupts_supported = 0,
+	.imp_def_bpt_supported = true,
+	.bra_mode_count = 1,
+	.bra_mode_list = { 0 }
+};
+
+static struct soundwire_audio_mode alc5682_audio_mode = {
+	.bus_frequency_configs_count = 7,
+	.bus_frequency_configs = {
+		1000 * KHz,	/* 1 MHz */
+		2400 * KHz,	/* 2.4 MHz */
+		3000 * KHz,	/* 3 MHz */
+		4000 * KHz,	/* 4 MHz */
+		4800 * KHz,	/* 4.8 MHz */
+		9600 * KHz,	/* 9.6 MHz */
+		12000 * KHz,	/* 12 MHz */
+	},
+	/* Support 8 KHz to 192 KHz sampling frequency */
+	.max_sampling_frequency = 192 * KHz,
+	.min_sampling_frequency = 8 * KHz,
+	.prepare_channel_behavior = CHANNEL_PREPARE_ANY_FREQUENCY
+};
+
+static struct soundwire_dpn alc5682_dpn = {
+	.port_wordlength_configs_count = 3,
+	.port_wordlength_configs = { 16, 20, 24 },
+	.data_port_type = FULL_DATA_PORT,
+	.max_grouping_supported = BLOCK_GROUP_COUNT_1,
+	.simplified_channelprepare_sm = false,
+	.imp_def_dpn_interrupts_supported = 0,
+	.min_channel_number = 1,
+	.max_channel_number = 2,
+	.modes_supported = MODE_ISOCHRONOUS | MODE_TX_CONTROLLED |
+			   MODE_RX_CONTROLLED | MODE_FULL_ASYNCHRONOUS,
+	.block_packing_mode = true,
+	.port_audio_mode_count = 1,
+	.port_audio_mode_list = { 0 }
+};
+
+static const struct soundwire_codec alc5682_codec = {
+	.slave = &alc5682_slave,
+	.dp0_bra_mode = { &alc5682_dp0_bra_mode },
+	.dp0 = &alc5682_dp0,
+	.audio_mode = { &alc5682_audio_mode },
+	.dpn = {
+		{
+			.port = 1,
+			.source = &alc5682_dpn,
+			.sink = &alc5682_dpn,
+		},
+		{
+			.port = 2,
+			.source = &alc5682_dpn,
+			.sink = &alc5682_dpn,
+		},
+		{
+			.port = 3,
+			.source = &alc5682_dpn,
+			.sink = &alc5682_dpn,
+		},
+		{
+			.port = 4,
+			.source = &alc5682_dpn,
+			.sink = &alc5682_dpn,
+		}
+	}
+};
+
+static void soundwire_alc5682_fill_ssdt(const struct device *dev)
+{
+	struct drivers_soundwire_alc5682_config *config = dev->chip_info;
+	const char *scope = acpi_device_scope(dev);
+	struct acpi_dp *dsd;
+
+	if (!dev->enabled || !scope)
+		return;
+
+	acpigen_write_scope(scope);
+	acpigen_write_device(acpi_device_name(dev));
+
+	/* Set codec address IDs. */
+	alc5682_address.link_id = dev->path.generic.id;
+	alc5682_address.unique_id = dev->path.generic.subid;
+
+	acpigen_write_ADR_soundwire_device(&alc5682_address);
+	acpigen_write_name_string("_DDN", config->desc ? : dev->chip_ops->name);
+	acpigen_write_STA(acpi_device_status(dev));
+
+	dsd = acpi_dp_new_table("_DSD");
+	soundwire_gen_codec(dsd, &alc5682_codec, NULL);
+	acpi_dp_write(dsd);
+
+	acpigen_pop_len(); /* Device */
+	acpigen_pop_len(); /* Scope */
+}
+
+static const char *soundwire_alc5682_acpi_name(const struct device *dev)
+{
+	struct drivers_soundwire_alc5682_config *config = dev->chip_info;
+	static char name[5];
+
+	if (config->name)
+		return config->name;
+	snprintf(name, sizeof(name), "SW%1X%1X", dev->path.generic.id, dev->path.generic.subid);
+	return name;
+}
+
+static struct device_operations soundwire_alc5682_ops = {
+	.read_resources		= noop_read_resources,
+	.set_resources		= noop_set_resources,
+	.acpi_name		= soundwire_alc5682_acpi_name,
+	.acpi_fill_ssdt		= soundwire_alc5682_fill_ssdt,
+};
+
+static void soundwire_alc5682_enable(struct device *dev)
+{
+	dev->ops = &soundwire_alc5682_ops;
+}
+
+struct chip_operations drivers_soundwire_alc5682_ops = {
+	CHIP_NAME("Realtek ALC5682 SoundWire Codec")
+	.enable_dev = soundwire_alc5682_enable
+};
diff --git a/src/drivers/soundwire/alc5682/chip.h b/src/drivers/soundwire/alc5682/chip.h
new file mode 100644
index 0000000000..5dfcbfea7e
--- /dev/null
+++ b/src/drivers/soundwire/alc5682/chip.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __DRIVERS_SOUNDWIRE_ALC5682_CHIP_H__
+#define __DRIVERS_SOUNDWIRE_ALC5682_CHIP_H__
+
+struct drivers_soundwire_alc5682_config {
+	const char *name;
+	const char *desc;
+};
+
+#endif /* __DRIVERS_SOUNDWIRE_ALC5682_CHIP_H__ */