mux.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
 
#include <acpi/acpigen.h>
#include <device/device.h>
#include "chip.h"
 
#define TGL_PMC_MUX_HID "INTC105C"
 
static const char *mux_acpi_name(const struct device *dev)
{
        return "MUX";
}
 
static void mux_fill_ssdt(const struct device *dev)
{
        const char *scope = acpi_device_scope(dev);
        const char *name = acpi_device_name(dev);
 
        if (!scope || !name)
                return;
 
        acpigen_write_scope(scope);
        acpigen_write_device(name);
 
        acpigen_write_name_string("_HID", TGL_PMC_MUX_HID);
        acpigen_write_name_string("_DDN", dev->chip_ops->name);
 
        acpigen_pop_len(); /* Device */
        acpigen_pop_len(); /* Scope */
}
 
static struct device_operations mux_dev_ops = {
        .read_resources = noop_read_resources,
        .set_resources  = noop_set_resources,
        .acpi_name      = mux_acpi_name,
        .acpi_fill_ssdt = mux_fill_ssdt,
        .scan_bus       = scan_static_bus,
};
 
static void mux_enable(struct device *dev)
{
        dev->ops = &mux_dev_ops;
}
 
struct chip_operations drivers_intel_pmc_mux_ops = {
        CHIP_NAME("Intel PMC MUX Driver")
        .enable_dev     = mux_enable,
};