80 lines
2 KiB
C
80 lines
2 KiB
C
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/*
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* This file is part of the coreboot project.
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*
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* Copyright 2018 Google LLC
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <arch/acpi.h>
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#include <boot/coreboot_tables.h>
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#include <gpio.h>
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#include <soc/gpio.h>
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#include <variant/gpio.h>
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#include <vendorcode/google/chromeos/chromeos.h>
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void fill_lb_gpios(struct lb_gpios *gpios)
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{
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struct lb_gpio chromeos_gpios[] = {
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{-1, ACTIVE_HIGH, get_write_protect_state(), "write protect"},
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{-1, ACTIVE_HIGH, get_recovery_mode_switch(), "recovery"},
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{-1, ACTIVE_HIGH, get_lid_switch(), "lid"},
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{-1, ACTIVE_HIGH, 0, "power"},
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{-1, ACTIVE_HIGH, gfx_get_init_done(), "oprom"},
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{-1, ACTIVE_HIGH, 0, "EC in RW"},
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};
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lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
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}
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static int cros_get_gpio_value(int type)
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{
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const struct cros_gpio *cros_gpios;
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size_t i, num_gpios = 0;
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cros_gpios = variant_cros_gpios(&num_gpios);
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for (i = 0; i < num_gpios; i++) {
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const struct cros_gpio *gpio = &cros_gpios[i];
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if (gpio->type == type) {
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int state = gpio_get(gpio->gpio_num);
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if (gpio->polarity == CROS_GPIO_ACTIVE_LOW)
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return !state;
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else
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return state;
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}
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}
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return 0;
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}
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void mainboard_chromeos_acpi_generate(void)
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{
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const struct cros_gpio *cros_gpios;
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size_t num_gpios = 0;
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cros_gpios = variant_cros_gpios(&num_gpios);
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chromeos_acpi_gpio_generate(cros_gpios, num_gpios);
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}
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int get_write_protect_state(void)
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{
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return cros_get_gpio_value(CROS_GPIO_WP);
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}
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int get_recovery_mode_switch(void)
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{
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return cros_get_gpio_value(CROS_GPIO_REC);
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}
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int get_lid_switch(void)
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{
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return 1;
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}
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