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/*
* This file is part of the coreboot project.
*
* Copyright 2014 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <boot/coreboot_tables.h>
#include <console/console.h>
#include <delay.h>
#include <gpio.h>
#include <string.h>
#include <vendorcode/google/chromeos/chromeos.h>
#define DEV_SW 15
#define DEV_POL ACTIVE_LOW
#define REC_SW 16
#define REC_POL ACTIVE_LOW
#define WP_SW 17
#define WP_POL ACTIVE_LOW
static int read_gpio(gpio_t gpio_num)
{
gpio_tlmm_config_set(gpio_num, GPIO_FUNC_DISABLE,
GPIO_NO_PULL, GPIO_2MA, GPIO_DISABLE);
udelay(10); /* Should be enough to settle. */
return gpio_get(gpio_num);
}
void fill_lb_gpios(struct lb_gpios *gpios)
{
struct lb_gpio *gpio;
const int GPIO_COUNT = 5;
gpios->size = sizeof(*gpios) + (GPIO_COUNT * sizeof(struct lb_gpio));
gpios->count = GPIO_COUNT;
gpio = gpios->gpios;
fill_lb_gpio(gpio++, DEV_SW, ACTIVE_LOW, "developer", read_gpio(DEV_SW));
fill_lb_gpio(gpio++, REC_SW, ACTIVE_LOW, "recovery", read_gpio(REC_SW));
fill_lb_gpio(gpio++, WP_SW, ACTIVE_LOW, "write protect", read_gpio(WP_SW));
fill_lb_gpio(gpio++, -1, ACTIVE_LOW, "power", 1);
fill_lb_gpio(gpio++, -1, ACTIVE_LOW, "lid", 0);
}
int get_developer_mode_switch(void)
{
return read_gpio(DEV_SW) ^ !DEV_POL;
}
int get_recovery_mode_switch(void)
{
return read_gpio(REC_SW) ^ !REC_POL;
}
int get_write_protect_state(void)
{
return read_gpio(WP_SW) ^ !WP_POL;
}
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