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/* Copyright 2021 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Corsola daughter board detection */
#include <drivers/gpio.h>
#include "console.h"
#include "gpio/gpio_int.h"
#include "hooks.h"
#include "variant_db_detection.h"
#define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ## args)
#define CPRINTF(format, args...) cprintf(CC_SYSTEM, format, ## args)
static void corsola_db_config(enum corsola_db_type type)
{
switch (type) {
case CORSOLA_DB_HDMI:
/* EC_X_GPIO1 */
gpio_pin_configure_dt(GPIO_DT_FROM_ALIAS(gpio_en_hdmi_pwr),
GPIO_OUTPUT_HIGH);
/* X_EC_GPIO2 */
gpio_pin_configure_dt(GPIO_DT_FROM_ALIAS(gpio_ps185_ec_dp_hpd),
GPIO_INPUT);
gpio_enable_dt_interrupt(
GPIO_INT_FROM_NODELABEL(int_x_ec_gpio2));
/* EC_X_GPIO3 */
gpio_pin_configure_dt(GPIO_DT_FROM_ALIAS(gpio_ps185_pwrdn_odl),
GPIO_OUTPUT_HIGH | GPIO_OPEN_DRAIN);
return;
case CORSOLA_DB_TYPEC:
/* EC_X_GPIO1 */
gpio_pin_configure_dt(GPIO_DT_FROM_ALIAS(gpio_usb_c1_frs_en),
GPIO_OUTPUT_LOW);
/* X_EC_GPIO2 */
gpio_pin_configure_dt(
GPIO_DT_FROM_ALIAS(gpio_usb_c1_ppc_int_odl),
GPIO_INPUT | GPIO_PULL_UP);
gpio_enable_dt_interrupt(
GPIO_INT_FROM_NODELABEL(int_x_ec_gpio2));
/* EC_X_GPIO3 */
gpio_pin_configure_dt(
GPIO_DT_FROM_ALIAS(gpio_usb_c1_dp_in_hpd),
GPIO_OUTPUT_LOW);
return;
default:
break;
}
}
enum corsola_db_type corsola_get_db_type(void)
{
static enum corsola_db_type db = CORSOLA_DB_NONE;
if (db != CORSOLA_DB_NONE)
return db;
if (!gpio_pin_get_dt(GPIO_DT_FROM_NODELABEL(gpio_hdmi_prsnt_odl)))
db = CORSOLA_DB_HDMI;
else
db = CORSOLA_DB_TYPEC;
corsola_db_config(db);
CPRINTS("Detect %s DB", db == CORSOLA_DB_HDMI ? "HDMI" : "TYPEC");
return db;
}
static void corsola_db_init(void)
{
corsola_get_db_type();
}
DECLARE_HOOK(HOOK_INIT, corsola_db_init, HOOK_PRIO_PRE_I2C);
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