smihandler.c

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <acpi/acpi.h>
#include <arch/io.h>
#include <cpu/x86/smm.h>
#include <soc/nvs.h>
#include <southbridge/intel/bd82x6x/pch.h>
#include <southbridge/intel/bd82x6x/me.h>
#include <northbridge/intel/sandybridge/sandybridge.h>
 
/*
 * Change LED_POWER# (SIO GPIO 45) state based on sleep type.
 * The IO address is hardcoded as we don't have device path in SMM.
 */
#define SIO_GPIO_BASE_SET4      (0x730 + 3)
#define SIO_GPIO_BLINK_GPIO45   0x25
void mainboard_smi_sleep(u8 slp_typ)
{
        u8 reg8;
 
        switch (slp_typ) {
        case ACPI_S3:
        case ACPI_S4:
                break;
 
        case ACPI_S5:
                /* Turn off LED */
                reg8 = inb(SIO_GPIO_BASE_SET4);
                reg8 |= (1 << 5);
                outb(reg8, SIO_GPIO_BASE_SET4);
                break;
        }
}