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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2018 Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/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);
}
}
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