adau7002.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <acpi/acpi_device.h>
#include <acpi/acpigen.h>
#include <console/console.h>
#include <device/device.h>
#include <device/path.h>
#include "chip.h"
 
#if CONFIG(HAVE_ACPI_TABLES)
 
#define ADAU7002_ACPI_NAME      "ADAU"
#define ADAU7002_ACPI_HID       "ADAU7002"
 
static void adau7002_fill_ssdt(const struct device *dev)
{
        struct drivers_generic_adau7002_config *config;
        struct acpi_dp *dp;
 
        if (!dev)
                return;
 
        const char *scope = acpi_device_scope(dev);
        const char *name = acpi_device_name(dev);
        if (!scope || !name)
                return;
 
        /* Device */
        acpigen_write_scope(scope);
        acpigen_write_device(name);
        acpigen_write_name_string("_HID", ADAU7002_ACPI_HID);
        acpigen_write_name_integer("_UID", 0);
        acpigen_write_name_string("_DDN", dev->chip_ops->name);
        acpigen_write_STA(acpi_device_status(dev));
 
        /* _DSD for devicetree properties */
        config = dev->chip_info;
        dp = acpi_dp_new_table("_DSD");
        acpi_dp_add_integer(dp, "wakeup-delay-ms", config->wakeup_delay);
        acpi_dp_write(dp);
 
        acpigen_pop_len(); /* Device */
        acpigen_pop_len(); /* Scope */
 
        printk(BIOS_INFO, "%s: %s\n", acpi_device_path(dev),
               dev->chip_ops->name);
}
 
static const char *adau7002_acpi_name(const struct device *dev)
{
        return ADAU7002_ACPI_NAME;
}
#endif
 
static struct device_operations adau7002_ops = {
        .read_resources         = noop_read_resources,
        .set_resources          = noop_set_resources,
#if CONFIG(HAVE_ACPI_TABLES)
        .acpi_name              = adau7002_acpi_name,
        .acpi_fill_ssdt         = adau7002_fill_ssdt,
#endif
};
 
static void adau7002_enable(struct device *dev)
{
        dev->ops = &adau7002_ops;
}
 
struct chip_operations drivers_generic_adau7002_ops = {
        CHIP_NAME("Analog Digital DMIC")
        .enable_dev = adau7002_enable
};