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/* SPDX-License-Identifier: GPL-2.0-only */
#include <acpi/acpigen.h>
#include <acpi/acpi_device.h>
#include <acpi/acpi_soundwire.h>
#include <commonlib/helpers.h>
#include <device/device.h>
#include <device/soundwire.h>
#include <stdbool.h>
#include "soundwire.h"
#include "chip.h"
__weak int soc_fill_soundwire_controller(struct intel_soundwire_controller **controller)
{
return -1;
}
static bool link_enabled(const struct device *dev, unsigned int link)
{
struct device *child;
for (child = dev->downstream->children; child; child = child->sibling) {
if (child->enabled && child->path.type == DEVICE_PATH_GENERIC &&
child->path.generic.id == link)
return true;
}
return false;
}
static void intel_soundwire_link_prop_cb(struct acpi_dp *dsd, unsigned int id,
const struct soundwire_controller *controller)
{
struct intel_soundwire_controller *intel_controller =
container_of(controller, struct intel_soundwire_controller, sdw);
unsigned int quirk_mask = intel_controller->quirk_mask;
/* Disable link if no are children enabled on this link device. */
if (!link_enabled(intel_controller->dev, id))
quirk_mask |= INTEL_SOUNDWIRE_QUIRK_BUS_DISABLE;
acpi_dp_add_integer(dsd, "intel-sdw-ip-clock", intel_controller->ip_clock);
acpi_dp_add_integer(dsd, "intel-quirk-mask", quirk_mask);
}
static void intel_soundwire_fill_ssdt(const struct device *dev)
{
struct acpi_dp *dsd;
struct intel_soundwire_controller *controller;
const char *scope = acpi_device_scope(dev);
if (!scope)
return;
if (soc_fill_soundwire_controller(&controller) < 0 || !controller)
return;
/* Provide device pointer for link property callback function. */
controller->dev = dev;
acpigen_write_scope(scope);
acpigen_write_device(acpi_device_name(dev));
acpigen_write_name_string("_DDN", dev->chip_ops->name);
acpigen_write_name_integer("_ADR", controller->acpi_address);
acpigen_write_name_string("_CID", ACPI_HID_CONTAINER);
acpigen_write_STA(acpi_device_status(dev));
dsd = acpi_dp_new_table("_DSD");
soundwire_gen_controller(dsd, &controller->sdw, &intel_soundwire_link_prop_cb);
acpi_dp_write(dsd);
acpigen_pop_len(); /* Device */
acpigen_pop_len(); /* Scope */
}
static const char *intel_soundwire_acpi_name(const struct device *dev)
{
return "SNDW";
}
static struct device_operations intel_soundwire_ops = {
.read_resources = noop_read_resources,
.set_resources = noop_set_resources,
.acpi_name = intel_soundwire_acpi_name,
.acpi_fill_ssdt = intel_soundwire_fill_ssdt,
.scan_bus = scan_static_bus,
};
static void intel_soundwire_enable(struct device *dev)
{
dev->ops = &intel_soundwire_ops;
}
struct chip_operations drivers_intel_soundwire_ops = {
.name = "Intel SoundWire Controller",
.enable_dev = intel_soundwire_enable
};
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