| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <bootmode.h> |
| #include <boot/coreboot_tables.h> |
| #include <drivers/tpm/cr50.h> |
| #include <gpio.h> |
| |
| #include "gpio.h" |
| |
| void setup_chromeos_gpios(void) |
| { |
| gpio_input(GPIO_WP); |
| gpio_input_pullup(GPIO_EC_AP_INT); |
| gpio_input_pullup(GPIO_EC_IN_RW); |
| gpio_input_pullup(GPIO_H1_AP_INT); |
| gpio_input_pullup(GPIO_SD_CD); |
| gpio_output(GPIO_RESET, 0); |
| gpio_output(GPIO_EN_SPK_AMP, 0); |
| gpio_output(GPIO_XHCI_DONE, 0); |
| } |
| |
| void fill_lb_gpios(struct lb_gpios *gpios) |
| { |
| struct lb_gpio chromeos_gpios[] = { |
| {GPIO_EC_IN_RW.id, ACTIVE_LOW, -1, "EC in RW"}, |
| {GPIO_EC_AP_INT.id, ACTIVE_LOW, -1, "EC interrupt"}, |
| {GPIO_H1_AP_INT.id, ACTIVE_HIGH, -1, "TPM interrupt"}, |
| {GPIO_SD_CD.id, ACTIVE_HIGH, -1, "SD card detect"}, |
| {GPIO_EN_SPK_AMP.id, ACTIVE_HIGH, -1, "speaker enable"}, |
| }; |
| lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios)); |
| } |
| |
| int get_write_protect_state(void) |
| { |
| return !gpio_get(GPIO_WP); |
| } |
| |
| int cr50_plat_irq_status(void) |
| { |
| return gpio_eint_poll(GPIO_H1_AP_INT); |
| } |
| |
| int get_ec_is_trusted(void) |
| { |
| /* EC is trusted if not in RW. This is active low. */ |
| return !!gpio_get(GPIO_EC_IN_RW); |
| } |