[M] Change in coreboot[main]: drivers/soundwire/ALC722: Add ALC722 codec support

[Saurabh Mishra (Code Review)]

Attention is currently required from: Saurabh Mishra.

Hello Saurabh Mishra,

I'd like you to do a code review.
Please visit

https://review.coreboot.org/c/coreboot/+/80463?usp=email

to review the following change.

Change subject: drivers/soundwire/ALC722: Add ALC722 codec support
......................................................................

drivers/soundwire/ALC722: Add ALC722 codec support

Change-Id: I6dfa1b8cc6bec8f227083e161a6ee876c91808d2
Signed-off-by: Saurabh Mishra 
---
A src/drivers/soundwire/alc722/Kconfig
A src/drivers/soundwire/alc722/Makefile.inc
A src/drivers/soundwire/alc722/alc722.c
A src/drivers/soundwire/alc722/chip.h
M src/include/mipi/ids.h
5 files changed, 173 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/63/80463/1

diff --git a/src/drivers/soundwire/alc722/Kconfig b/src/drivers/soundwire/alc722/Kconfig
new file mode 100644
index 0000000..7ae4e08
--- /dev/null
+++ b/src/drivers/soundwire/alc722/Kconfig
@@ -0,0 +1,2 @@
+config DRIVERS_SOUNDWIRE_ALC722
+	bool
diff --git a/src/drivers/soundwire/alc722/Makefile.inc b/src/drivers/soundwire/alc722/Makefile.inc
new file mode 100644
index 0000000..ca59033
--- /dev/null
+++ b/src/drivers/soundwire/alc722/Makefile.inc
@@ -0,0 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
+ramstage-$(CONFIG_DRIVERS_SOUNDWIRE_ALC722) += alc722.c
diff --git a/src/drivers/soundwire/alc722/alc722.c b/src/drivers/soundwire/alc722/alc722.c
new file mode 100644
index 0000000..0a845da
--- /dev/null
+++ b/src/drivers/soundwire/alc722/alc722.c
@@ -0,0 +1,156 @@
+/* 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/path.h>
+#include <device/soundwire.h>
+#include <mipi/ids.h>
+#include <stdio.h>
+
+#include "chip.h"
+
+static struct soundwire_address alc722_address = {
+	.version = SOUNDWIRE_VERSION_1_2,
+	.manufacturer_id = MIPI_MFG_ID_REALTEK,
+	.part_id = MIPI_DEV_ID_REALTEK_ALC722,
+	.class = MIPI_CLASS_SDCA
+};
+
+static struct soundwire_slave alc722_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(2),
+	.sink_port_list = SOUNDWIRE_PORT(1),
+};
+
+static struct soundwire_audio_mode alc722_audio_mode = {
+	/* Bus frequency must be 1/2/4/8 divider of supported input frequencies. */
+	.bus_frequency_configs_count = 12,
+	.bus_frequency_configs = {
+		9600 * KHz,
+		4800 * KHz,
+		2400 * KHz,
+		1200 * KHz,
+		12000 * KHz,
+		6000 * KHz,
+		3000 * KHz,
+		1500 * KHz,
+		12288 * KHz,
+		6144 * KHz,
+		3072 * KHz,
+		1536 * KHz
+	},
+	/* Support 16 KHz to 192 KHz sampling frequency */
+	.sampling_frequency_configs_count = 9,
+	.sampling_frequency_configs = {
+		16 * KHz,
+		22.05 * KHz,
+		24 * KHz,
+		32 * KHz,
+		44.1 * KHz,
+		48 * KHz,
+		88.2 * KHz,
+		96 * KHz,
+		192 * KHz
+	},
+	.prepare_channel_behavior = CHANNEL_PREPARE_ANY_FREQUENCY
+};
+
+static struct soundwire_dpn alc722_dp = {
+	.port_wordlength_configs_count = 1,
+	.port_wordlength_configs = { 32 },
+	.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 alc722_codec = {
+	.slave = &alc722_slave,
+	.audio_mode = { &alc722_audio_mode },
+	.dpn = {
+		{
+			/* Data Input for Speaker Path */
+			.port = 1,
+			.sink = &alc722_dp
+		},
+		{
+			/* Data Output for DSP Path */
+			.port = 2,
+			.source = &alc722_dp
+		}
+	}
+
+};
+
+static void soundwire_alc722_fill_ssdt(const struct device *dev)
+{
+	struct drivers_soundwire_alc722_config *config = dev->chip_info;
+	const char *scope = acpi_device_scope(dev);
+	struct acpi_dp *dsd;
+
+	if (!scope)
+		return;
+
+	acpigen_write_scope(scope);
+	acpigen_write_device(acpi_device_name(dev));
+
+	/* Set codec address IDs. */
+	alc722_address.link_id = dev->path.generic.id;
+	alc722_address.unique_id = dev->path.generic.subid;
+
+	acpigen_write_ADR_soundwire_device(&alc722_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, &alc722_codec, NULL);
+	acpi_dp_write(dsd);
+
+	acpigen_pop_len(); /* Device */
+	acpigen_pop_len(); /* Scope */
+}
+
+static const char *soundwire_alc722_acpi_name(const struct device *dev)
+{
+	struct drivers_soundwire_alc722_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_alc722_ops = {
+	.read_resources		= noop_read_resources,
+	.set_resources		= noop_set_resources,
+	.acpi_name		= soundwire_alc722_acpi_name,
+	.acpi_fill_ssdt		= soundwire_alc722_fill_ssdt,
+};
+
+static void soundwire_alc722_enable(struct device *dev)
+{
+	dev->ops = &soundwire_alc722_ops;
+}
+
+struct chip_operations drivers_soundwire_alc722_ops = {
+	.name = "Realtek ALC722 SoundWire Codec",
+	.enable_dev = soundwire_alc722_enable
+};
diff --git a/src/drivers/soundwire/alc722/chip.h b/src/drivers/soundwire/alc722/chip.h
new file mode 100644
index 0000000..87d8b98
--- /dev/null
+++ b/src/drivers/soundwire/alc722/chip.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __DRIVERS_SOUNDWIRE_ALC722_CHIP_H__
+#define __DRIVERS_SOUNDWIRE_ALC722_CHIP_H__
+
+struct drivers_soundwire_alc722_config {
+	const char *name;
+	const char *desc;
+};
+
+#endif /* __DRIVERS_SOUNDWIRE_ALC722_CHIP_H__ */
diff --git a/src/include/mipi/ids.h b/src/include/mipi/ids.h
index 5aa5a67..ce5456e 100644
--- a/src/include/mipi/ids.h
+++ b/src/include/mipi/ids.h
@@ -22,6 +22,7 @@
 #define MIPI_DEV_ID_REALTEK_ALC5682		0x5682
 #define MIPI_DEV_ID_REALTEK_ALC711		0x0711
 #define MIPI_DEV_ID_REALTEK_ALC1308             0x1308
+#define MIPI_DEV_ID_REALTEK_ALC722		0x0722

#define MIPI_MFG_ID_MAXIM			0x019f
 #define MIPI_DEV_ID_MAXIM_MAX98373		0x8373