smihandler.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <acpi/acpi.h>
#include <baseboard/variants.h>
#include <delay.h>
 
#include "gpio.h"
 
#define TOUCH_DISABLE         GPP_C3
#define TOUCH_RESET           GPP_B3
#define TOUCH_ENABLE          GPP_B4
#define FP_PWR_ENABLE         GPP_B11
 
/*
 * Elan touchscreen has higher delay requirements than the other
 * devices, so using that.
 */
#define ELAN_STOP_OFF_DELAY   2
#define ELAN_RESET_OFF_DELAY  2
#define ELAN_ENABLE_OFF_DELAY 100
 
void variant_smi_sleep(u8 slp_typ)
{
        if (slp_typ == ACPI_S5) {
                /* TOUCHSCREEN_DIS# */
                gpio_set(TOUCH_DISABLE, 0);
                mdelay(ELAN_STOP_OFF_DELAY);
                /* TOUCHSCREEN_RST# */
                gpio_set(TOUCH_RESET, 0);
                mdelay(ELAN_RESET_OFF_DELAY);
                /* EN_PP3300_DX_TOUCHSCREEN */
                gpio_set(TOUCH_ENABLE, 0);
                mdelay(ELAN_ENABLE_OFF_DELAY);
                /* PCH_FP_PWR_EN */
                gpio_set(FP_PWR_ENABLE, 0);
        }
}