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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 Google Inc.
* Copyright (C) 2015 Intel Corporation
*
* 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/io.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <rules.h>
#include <gpio.h>
#include <soc/gpio.h>
#include <string.h>
#include <ec/google/chromeec/ec.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include "gpio.h"
#include "ec.h"
#if ENV_RAMSTAGE
#include <boot/coreboot_tables.h>
void fill_lb_gpios(struct lb_gpios *gpios)
{
struct lb_gpio chromeos_gpios[] = {
{-1, ACTIVE_HIGH, get_write_protect_state(), "write protect"},
{-1, ACTIVE_HIGH, get_recovery_mode_switch(), "recovery"},
{-1, ACTIVE_HIGH, get_developer_mode_switch(), "developer"},
{-1, ACTIVE_HIGH, get_lid_switch(), "lid"},
{-1, ACTIVE_HIGH, 0, "power"},
{-1, ACTIVE_HIGH, gfx_get_init_done(), "oprom"},
{GPIO_EC_IN_RW, ACTIVE_HIGH,
gpio_get(GPIO_EC_IN_RW), "EC in RW"},
};
lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
}
#endif /* ENV_RAMSTAGE */
int get_lid_switch(void)
{
/* Read lid switch state from the EC. */
return !!(google_chromeec_get_switches() & EC_SWITCH_LID_OPEN);
}
int get_developer_mode_switch(void)
{
/* No physical developer mode switch. */
return 0;
}
int get_recovery_mode_switch(void)
{
/* Check for dedicated recovery switch first. */
if (google_chromeec_get_switches() & EC_SWITCH_DEDICATED_RECOVERY)
return 1;
/* Otherwise check if the EC has posted the keyboard recovery event. */
return !!(google_chromeec_get_events_b() &
EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY));
}
int clear_recovery_mode_switch(void)
{
/* Clear keyboard recovery event. */
return google_chromeec_clear_events_b(
EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY));
}
int get_write_protect_state(void)
{
/* Read PCH_WP GPIO. */
return gpio_get(GPIO_PCH_WP);
}
static const struct cros_gpio cros_gpios[] = {
CROS_GPIO_REC_AL(CROS_GPIO_VIRTUAL, CROS_GPIO_DEVICE_NAME),
CROS_GPIO_WP_AH(GPIO_PCH_WP, CROS_GPIO_DEVICE_NAME),
};
void mainboard_chromeos_acpi_generate(void)
{
chromeos_acpi_gpio_generate(cros_gpios, ARRAY_SIZE(cros_gpios));
}
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