drivers/soundwire/alc1308 : Add ALC1308 soundwire device
This patch adds new soundwire device ALC1308
The codec properties are filled out as best as possible
with the datasheet as a reference.
The ACPI address for the codec is calculated with the information in
the codec driver combined with the devicetree.cb hierarchy where the
link and unique IDs are extracted from the device path.
The unique ID is calculated from schematics by referring to ASEL[1:0]
strap settings. Datasheet of ALC1308 provides info about the mapping of
ASEL strap settings to unique ID
For example this device is connected to master link ID 1 and has strap
settings configuring it for unique ID 2.
chip drivers/soundwire/alc1308
register "desc" = ""Left Speaker""
device generic 1.2 on end
end
Bug=None
Test=Build and boot on TGLRVP.Extract SSDT and confirm that the entries for
PCI0.HDAS.SNDW are present for ALC1308
Test speaker out functionality
Signed-off-by: Anil Kumar <anil.kumar.k@intel.com>
Change-Id: Ibf3f1d5c6881cbd106e96ad1ff17ca216aa272ac
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51042
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Sathyanarayana Nujella
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/drivers/soundwire/alc1308/alc1308.c b/src/drivers/soundwire/alc1308/alc1308.c
new file mode 100644
index 0000000..df60d47
--- /dev/null
+++ b/src/drivers/soundwire/alc1308/alc1308.c
@@ -0,0 +1,151 @@
+/* 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/mipi_ids.h>
+#include <device/soundwire.h>
+#include <stdio.h>
+
+#include "chip.h"
+
+static struct soundwire_address alc1308_address = {
+ .version = SOUNDWIRE_VERSION_1_1,
+ .manufacturer_id = MIPI_MFG_ID_REALTEK,
+ .part_id = MIPI_DEV_ID_REALTEK_ALC1308,
+ .class = MIPI_CLASS_NONE
+};
+
+static struct soundwire_slave alc1308_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) | SOUNDWIRE_PORT(4),
+ .sink_port_list = SOUNDWIRE_PORT(1)
+};
+
+static struct soundwire_audio_mode alc1308_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, /* 9.6 MHz */
+ 12000 * KHz, 6000 * KHz, 3000 * KHz, 1500 * KHz, /* 12 MHz */
+ 12288 * KHz, 6144 * KHz, 3072 * KHz, 1536 * KHz /* 12.288 MHz */
+ },
+ /* Support 16 KHz to 96 KHz sampling frequency */
+ .sampling_frequency_configs_count = 8,
+ .sampling_frequency_configs = {
+ 16 * KHz,
+ 22.05 * KHz,
+ 24 * KHz,
+ 32 * KHz,
+ 44.1 * KHz,
+ 48 * KHz,
+ 88.2 * KHz,
+ 96 * KHz,
+ },
+ .prepare_channel_behavior = CHANNEL_PREPARE_ANY_FREQUENCY
+};
+
+static struct soundwire_dpn alc1308_dp1 = {
+ .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 alc1308_codec = {
+ .slave = &alc1308_slave,
+ .audio_mode = { &alc1308_audio_mode },
+ .dpn = {
+ {
+ /* Data Input for Speaker Path */
+ .port = 1,
+ .sink = &alc1308_dp1
+ },
+ {
+ /* Data out for I.V sensing */
+ .port = 2,
+ .source = &alc1308_dp1
+ },
+ {
+ /* Data out for I.V sensing */
+ .port = 4,
+ .source = &alc1308_dp1
+ }
+ }
+
+};
+
+static void soundwire_alc1308_fill_ssdt(const struct device *dev)
+{
+ struct drivers_soundwire_alc1308_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. */
+ alc1308_address.link_id = dev->path.generic.id;
+ alc1308_address.unique_id = dev->path.generic.subid;
+
+ acpigen_write_ADR_soundwire_device(&alc1308_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, &alc1308_codec, NULL);
+ acpi_dp_write(dsd);
+
+ acpigen_pop_len(); /* Device */
+ acpigen_pop_len(); /* Scope */
+}
+
+static const char *soundwire_alc1308_acpi_name(const struct device *dev)
+{
+ struct drivers_soundwire_alc1308_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_alc1308_ops = {
+ .read_resources = noop_read_resources,
+ .set_resources = noop_set_resources,
+ .acpi_name = soundwire_alc1308_acpi_name,
+ .acpi_fill_ssdt = soundwire_alc1308_fill_ssdt,
+};
+
+static void soundwire_alc1308_enable(struct device *dev)
+{
+ dev->ops = &soundwire_alc1308_ops;
+}
+
+struct chip_operations drivers_soundwire_alc1308_ops = {
+ CHIP_NAME("Realtek ALC1308 SoundWire Codec")
+ .enable_dev = soundwire_alc1308_enable
+};