dock.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <console/console.h>
#include <device/device.h>
#include "dock.h"
#include <southbridge/intel/common/gpio.h>
#include <ec/lenovo/h8/h8.h>
#include <ec/acpi/ec.h>
 
void h8_mb_init(void)
{
        if (dock_present()) {
                printk(BIOS_DEBUG, "dock is connected\n");
                dock_connect();
        } else {
                printk(BIOS_DEBUG, "dock is not connected\n");
        }
}
 
void dock_connect(void)
{
        ec_set_bit(0x02, 0);
        ec_set_bit(0x1a, 0);
        ec_set_bit(0xfe, 4);
 
        set_gpio(28, GPIO_LEVEL_HIGH);
}
 
void dock_disconnect(void)
{
        ec_clr_bit(0x02, 0);
        ec_clr_bit(0x1a, 0);
        ec_clr_bit(0xfe, 4);
 
        set_gpio(28, GPIO_LEVEL_LOW);
}
 
int dock_present(void)
{
        const int dock_id_gpio[] = { 3, 4, 5, -1};
 
        return get_gpios(dock_id_gpio) != 7;
}