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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.
*/
#include <zephyr.h>
#include <ztest.h>
#include <drivers/gpio.h>
#include <drivers/gpio/gpio_emul.h>
#include "common.h"
#include "ec_tasks.h"
#include "emul/emul_common_i2c.h"
#include "emul/emul_tcpci.h"
#include "hooks.h"
#include "i2c.h"
#include "stubs.h"
#include "tcpm/tcpci.h"
#define EMUL_LABEL DT_NODELABEL(tcpci_emul)
/** Check TCPC register value */
static void check_tcpci_reg_f(const struct emul *emul, int reg,
uint16_t exp_val, int line)
{
uint16_t reg_val;
zassert_ok(tcpci_emul_get_reg(emul, reg, ®_val),
"Failed tcpci_emul_get_reg(); line: %d", line);
zassert_equal(exp_val, reg_val, "Expected 0x%x, got 0x%x; line: %d",
exp_val, reg_val, line);
}
#define check_tcpci_reg(emul, reg, exp_val) \
check_tcpci_reg_f((emul), (reg), (exp_val), __LINE__)
/** Test TCPCI init and vbus level */
static void test_tcpci_init(void)
{
const struct emul *emul = emul_get_binding(DT_LABEL(EMUL_LABEL));
struct i2c_emul *i2c_emul = tcpci_emul_get_i2c_emul(emul);
uint16_t exp_mask;
tcpc_config[USBC_PORT_C0].flags = TCPC_FLAGS_TCPCI_REV2_0 &
TCPC_FLAGS_TCPCI_REV2_0_NO_VSAFE0V;
tcpci_emul_set_rev(emul, TCPCI_EMUL_REV2_0_VER1_1);
/* Test fail on power status read */
i2c_common_emul_set_read_fail_reg(i2c_emul, TCPC_REG_POWER_STATUS);
zassert_equal(EC_ERROR_INVAL, tcpci_tcpm_init(USBC_PORT_C0), NULL);
i2c_common_emul_set_read_fail_reg(i2c_emul,
I2C_COMMON_EMUL_NO_FAIL_REG);
/* Test fail on uninitialised bit set */
tcpci_emul_set_reg(emul, TCPC_REG_POWER_STATUS,
TCPC_REG_POWER_STATUS_UNINIT);
zassert_equal(EC_ERROR_TIMEOUT, tcpci_tcpm_init(USBC_PORT_C0), NULL);
/*
* Set expected alert mask. It is used in test until vSafe0V tcpc
* config flag is revmoved.
*/
exp_mask = TCPC_REG_ALERT_TX_SUCCESS | TCPC_REG_ALERT_TX_FAILED |
TCPC_REG_ALERT_TX_DISCARDED | TCPC_REG_ALERT_RX_STATUS |
TCPC_REG_ALERT_RX_HARD_RST | TCPC_REG_ALERT_CC_STATUS |
TCPC_REG_ALERT_FAULT | TCPC_REG_ALERT_POWER_STATUS;
/* Set TCPCI emulator VBUS to safe0v (disconnected) */
tcpci_emul_set_reg(emul, TCPC_REG_POWER_STATUS, 0);
/* Test init with VBUS safe0v without vSafe0V tcpc config flag */
zassert_equal(EC_SUCCESS, tcpci_tcpm_init(USBC_PORT_C0), NULL);
zassert_true(tcpci_tcpm_check_vbus_level(USBC_PORT_C0, VBUS_SAFE0V),
NULL);
zassert_false(tcpci_tcpm_check_vbus_level(USBC_PORT_C0, VBUS_PRESENT),
NULL);
check_tcpci_reg(emul, TCPC_REG_POWER_STATUS_MASK,
TCPC_REG_POWER_STATUS_VBUS_PRES);
check_tcpci_reg(emul, TCPC_REG_ALERT_MASK, exp_mask);
/* Set TCPCI emulator VBUS to present (connected, above 4V) */
tcpci_emul_set_reg(emul, TCPC_REG_POWER_STATUS,
TCPC_REG_POWER_STATUS_VBUS_PRES);
/* Test init with VBUS present without vSafe0V tcpc config flag */
zassert_equal(EC_SUCCESS, tcpci_tcpm_init(USBC_PORT_C0), NULL);
zassert_false(tcpci_tcpm_check_vbus_level(USBC_PORT_C0, VBUS_SAFE0V),
NULL);
zassert_true(tcpci_tcpm_check_vbus_level(USBC_PORT_C0, VBUS_PRESENT),
NULL);
check_tcpci_reg(emul, TCPC_REG_POWER_STATUS_MASK,
TCPC_REG_POWER_STATUS_VBUS_PRES);
check_tcpci_reg(emul, TCPC_REG_ALERT_MASK, exp_mask);
/* Disable vSafe0V tcpc config flag and update expected alert mask */
exp_mask |= TCPC_REG_ALERT_EXT_STATUS;
tcpc_config[USBC_PORT_C0].flags = TCPC_FLAGS_TCPCI_REV2_0;
/* Test init with VBUS present with vSafe0V tcpc config flag */
zassert_equal(EC_SUCCESS, tcpci_tcpm_init(USBC_PORT_C0), NULL);
zassert_false(tcpci_tcpm_check_vbus_level(USBC_PORT_C0, VBUS_SAFE0V),
NULL);
zassert_true(tcpci_tcpm_check_vbus_level(USBC_PORT_C0, VBUS_PRESENT),
NULL);
check_tcpci_reg(emul, TCPC_REG_POWER_STATUS_MASK,
TCPC_REG_POWER_STATUS_VBUS_PRES);
check_tcpci_reg(emul, TCPC_REG_ALERT_MASK, exp_mask);
/* Set TCPCI emulator VBUS to safe0v (disconnected) */
tcpci_emul_set_reg(emul, TCPC_REG_POWER_STATUS, 0);
tcpci_emul_set_reg(emul, TCPC_REG_EXT_STATUS,
TCPC_REG_EXT_STATUS_SAFE0V);
/* Test init with VBUS safe0v with vSafe0V tcpc config flag */
zassert_equal(EC_SUCCESS, tcpci_tcpm_init(USBC_PORT_C0), NULL);
zassert_true(tcpci_tcpm_check_vbus_level(USBC_PORT_C0, VBUS_SAFE0V),
NULL);
zassert_false(tcpci_tcpm_check_vbus_level(USBC_PORT_C0, VBUS_PRESENT),
NULL);
check_tcpci_reg(emul, TCPC_REG_POWER_STATUS_MASK,
TCPC_REG_POWER_STATUS_VBUS_PRES);
check_tcpci_reg(emul, TCPC_REG_ALERT_MASK, exp_mask);
/*
* Set TCPCI emulator VBUS to disconnected but not at vSafe0V
* (VBUS in 0.8V - 3.5V range)
*/
tcpci_emul_set_reg(emul, TCPC_REG_EXT_STATUS, 0);
/* Test init with VBUS not safe0v with vSafe0V tcpc config flag */
zassert_equal(EC_SUCCESS, tcpci_tcpm_init(USBC_PORT_C0), NULL);
zassert_false(tcpci_tcpm_check_vbus_level(USBC_PORT_C0, VBUS_SAFE0V),
NULL);
zassert_false(tcpci_tcpm_check_vbus_level(USBC_PORT_C0, VBUS_PRESENT),
NULL);
check_tcpci_reg(emul, TCPC_REG_POWER_STATUS_MASK,
TCPC_REG_POWER_STATUS_VBUS_PRES);
check_tcpci_reg(emul, TCPC_REG_ALERT_MASK, exp_mask);
}
/** Test TCPCI release */
static void test_tcpci_release(void)
{
const struct emul *emul = emul_get_binding(DT_LABEL(EMUL_LABEL));
tcpci_emul_set_reg(emul, TCPC_REG_ALERT, 0xffff);
zassert_equal(EC_SUCCESS, tcpci_tcpm_release(USBC_PORT_C0), NULL);
check_tcpci_reg(emul, TCPC_REG_POWER_STATUS_MASK, 0);
check_tcpci_reg(emul, TCPC_REG_ALERT_MASK, 0);
check_tcpci_reg(emul, TCPC_REG_ALERT, 0);
}
void test_suite_tcpci(void)
{
ztest_test_suite(tcpci,
ztest_user_unit_test(test_tcpci_init),
ztest_user_unit_test(test_tcpci_release));
ztest_run_test_suite(tcpci);
}
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