| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <boot/coreboot_tables.h> |
| #include <ec/google/chromeec/ec.h> |
| #include <ec/google/chromeec/ec_commands.h> |
| #include <gpio.h> |
| #include <vendorcode/google/chromeos/chromeos.h> |
| |
| #include "board.h" |
| |
| #define GPIO_WP GPIO(7, A, 6) |
| #define GPIO_LID GPIO(0, A, 6) |
| #define GPIO_POWER GPIO(0, A, 5) |
| #define GPIO_RECOVERY GPIO(0, B, 1) |
| #define GPIO_ECINRW GPIO(0, A, 7) |
| #define GPIO_ECIRQ GPIO(7, A, 7) |
| |
| void setup_chromeos_gpios(void) |
| { |
| gpio_input(GPIO_WP); |
| gpio_input_pullup(GPIO_LID); |
| gpio_input(GPIO_POWER); |
| gpio_input_pullup(GPIO_RECOVERY); |
| gpio_input(GPIO_ECIRQ); |
| } |
| |
| void fill_lb_gpios(struct lb_gpios *gpios) |
| { |
| struct lb_gpio chromeos_gpios[] = { |
| {GPIO_RECOVERY.raw, ACTIVE_LOW, |
| !get_recovery_mode_switch(), "presence"}, |
| {GPIO_LID.raw, ACTIVE_HIGH, -1, "lid"}, |
| {GPIO_POWER.raw, ACTIVE_LOW, -1, "power"}, |
| {GPIO_ECINRW.raw, ACTIVE_HIGH, -1, "EC in RW"}, |
| {GPIO_ECIRQ.raw, ACTIVE_LOW, -1, "EC interrupt"}, |
| {GPIO_RESET.raw, ACTIVE_HIGH, -1, "reset"}, |
| {GPIO_BACKLIGHT.raw, ACTIVE_HIGH, -1, "backlight"}, |
| }; |
| lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios)); |
| } |
| |
| int get_recovery_mode_switch(void) |
| { |
| uint64_t ec_events; |
| |
| /* The GPIO is active low. */ |
| if (!gpio_get(GPIO_RECOVERY)) |
| return 1; |
| |
| ec_events = google_chromeec_get_events_b(); |
| return !!(ec_events & |
| EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY)); |
| } |
| |
| int get_write_protect_state(void) |
| { |
| return !gpio_get(GPIO_WP); |
| } |
| |
| int get_ec_is_trusted(void) |
| { |
| /* EC is trusted if not in RW. */ |
| return !gpio_get(GPIO_ECINRW); |
| } |