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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 <gpio.h>
#include "chip.h"
const char *nauhid[MAX_HID] = {"NVTN2010", "NVTN2012"};
static void nau8315_fill_ssdt(const struct device *dev)
{
struct drivers_generic_nau8315_config *config = dev->chip_info;
const char *path;
struct acpi_dp *dp;
if (!dev->enabled || !config)
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", nauhid[config->hid]);
acpigen_write_name_integer("_UID", 0);
acpigen_write_name_string("_DDN", dev->chip_ops->name);
acpigen_write_STA(acpi_device_status(dev));
/* Resources */
acpigen_write_name("_CRS");
acpigen_write_resourcetemplate_header();
acpi_device_write_gpio(&config->enable_gpio);
acpigen_write_resourcetemplate_footer();
/* _DSD for devicetree properties */
/* This points to the first pin in the first gpio entry in _CRS */
path = acpi_device_path(dev);
dp = acpi_dp_new_table("_DSD");
acpi_dp_add_gpio(dp, "enable-gpios", path, 0, 0,
config->enable_gpio.active_low);
acpi_dp_write(dp);
acpigen_pop_len(); /* Device */
acpigen_pop_len(); /* Scope */
printk(BIOS_INFO, "%s: %s\n", path, dev->chip_ops->name);
}
static const char *nau8315_acpi_name(const struct device *dev)
{
return "NVTN";
}
static struct device_operations nau8315_ops = {
.read_resources = noop_read_resources,
.set_resources = noop_set_resources,
.acpi_name = nau8315_acpi_name,
.acpi_fill_ssdt = nau8315_fill_ssdt,
};
static void nau8315_enable(struct device *dev)
{
dev->ops = &nau8315_ops;
}
struct chip_operations drivers_generic_nau8315_ops = {
.name = "Nuvoton NAU8315 Amplifier",
.enable_dev = nau8315_enable
};
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