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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/gpio_emul.h>
#include "battery_smart.h"
#include "ec_commands.h"
#include "ec_tasks.h"
#include "emul/emul_smart_battery.h"
#include "emul/tcpc/emul_tcpci.h"
#include "emul/tcpc/emul_tcpci_partner_drp.h"
#include "emul/tcpc/emul_tcpci_partner_snk.h"
#include "emul/tcpc/emul_tcpci_partner_src.h"
#include "host_command.h"
#include "stubs.h"
#include "tcpm/tcpci.h"
#include "test/usb_pe.h"
#include "utils.h"
#define TCPCI_EMUL_LABEL DT_NODELABEL(tcpci_emul)
#define BATTERY_ORD DT_DEP_ORD(DT_NODELABEL(battery))
#define GPIO_AC_OK_PATH DT_PATH(named_gpios, acok_od)
#define GPIO_AC_OK_PIN DT_GPIO_PIN(GPIO_AC_OK_PATH, gpios)
static void init_tcpm(void)
{
const struct emul *tcpci_emul =
emul_get_binding(DT_LABEL(TCPCI_EMUL_LABEL));
struct i2c_emul *i2c_emul;
struct sbat_emul_bat_data *bat;
const struct device *gpio_dev =
DEVICE_DT_GET(DT_GPIO_CTLR(GPIO_AC_OK_PATH, gpios));
set_test_runner_tid();
zassert_ok(tcpci_tcpm_init(0), 0);
pd_set_suspend(0, 0);
/* Reset to disconnected state. */
zassert_ok(tcpci_emul_disconnect_partner(tcpci_emul), NULL);
/* Battery defaults to charging, so reset to not charging. */
i2c_emul = sbat_emul_get_ptr(BATTERY_ORD);
bat = sbat_emul_get_bat_data(i2c_emul);
bat->cur = -5;
zassert_ok(gpio_emul_input_set(gpio_dev, GPIO_AC_OK_PIN, 0), NULL);
}
static void remove_emulated_devices(void)
{
const struct emul *tcpci_emul =
emul_get_binding(DT_LABEL(TCPCI_EMUL_LABEL));
/* TODO: This function should trigger gpios to signal there is nothing
* attached to the port.
*/
zassert_ok(tcpci_emul_disconnect_partner(tcpci_emul), NULL);
}
static void test_attach_compliant_charger(void)
{
const struct emul *tcpci_emul =
emul_get_binding(DT_LABEL(TCPCI_EMUL_LABEL));
struct i2c_emul *i2c_emul;
uint16_t battery_status;
struct tcpci_src_emul my_charger;
const struct device *gpio_dev =
DEVICE_DT_GET(DT_GPIO_CTLR(GPIO_AC_OK_PATH, gpios));
/* Verify battery not charging. */
i2c_emul = sbat_emul_get_ptr(BATTERY_ORD);
zassert_ok(sbat_emul_get_word_val(i2c_emul, SB_BATTERY_STATUS,
&battery_status),
NULL);
zassert_not_equal(battery_status & STATUS_DISCHARGING, 0,
"Battery is not discharging: %d", battery_status);
/* TODO? Send host command to verify PD_ROLE_DISCONNECTED. */
/* Attach emulated charger. */
zassert_ok(gpio_emul_input_set(gpio_dev, GPIO_AC_OK_PIN, 1), NULL);
tcpci_src_emul_init(&my_charger);
zassert_ok(tcpci_src_emul_connect_to_tcpci(&my_charger.data,
&my_charger.common_data,
&my_charger.ops, tcpci_emul),
NULL);
/* Wait for current ramp. */
k_sleep(K_SECONDS(10));
/* Verify battery charging. */
zassert_ok(sbat_emul_get_word_val(i2c_emul, SB_BATTERY_STATUS,
&battery_status),
NULL);
zassert_equal(battery_status & STATUS_DISCHARGING, 0,
"Battery is discharging: %d", battery_status);
/* TODO: Also check voltage, current, etc. */
}
static void test_attach_pd_charger(void)
{
const struct emul *tcpci_emul =
emul_get_binding(DT_LABEL(TCPCI_EMUL_LABEL));
struct i2c_emul *i2c_emul;
uint16_t battery_status;
struct tcpci_src_emul my_charger;
const struct device *gpio_dev =
DEVICE_DT_GET(DT_GPIO_CTLR(GPIO_AC_OK_PATH, gpios));
struct ec_params_charge_state charge_params;
struct ec_response_charge_state charge_response;
struct host_cmd_handler_args args = BUILD_HOST_COMMAND(
EC_CMD_CHARGE_STATE, 0, charge_response, charge_params);
struct ec_params_typec_status typec_params;
struct ec_response_typec_status typec_response;
struct host_cmd_handler_args typec_args = BUILD_HOST_COMMAND(
EC_CMD_TYPEC_STATUS, 0, typec_response, typec_params);
/*
* TODO(b/209907297): Implement the steps of the test beyond USB default
* charging.
*/
/* 1. Configure source PDOs of partner (probably fixed source 5V 3A
* and fixed source 20V 3A). Currently, the partner emulator only
* supports the default USB power PDO.
*/
/* Attach emulated charger. This will send Source Capabilities. */
zassert_ok(gpio_emul_input_set(gpio_dev, GPIO_AC_OK_PIN, 1), NULL);
tcpci_src_emul_init(&my_charger);
zassert_ok(tcpci_src_emul_connect_to_tcpci(&my_charger.data,
&my_charger.common_data,
&my_charger.ops, tcpci_emul),
NULL);
/* Wait for current ramp. */
k_sleep(K_SECONDS(10));
/* Verify battery charging. */
i2c_emul = sbat_emul_get_ptr(BATTERY_ORD);
zassert_ok(sbat_emul_get_word_val(i2c_emul, SB_BATTERY_STATUS,
&battery_status),
NULL);
zassert_equal(battery_status & STATUS_DISCHARGING, 0,
"Battery is discharging: %d", battery_status);
/*
* 2. Check charging current and voltage (should be 5V, default USB
* current); make sure that reports from battery and PD host commands
* match; check that host command reports no active PDO.
*/
/*
* TODO(b/209907297): Also check the corresponding PD state and
* encapsulate this for use in other tests.
*/
charge_params.chgnum = 0;
charge_params.cmd = CHARGE_STATE_CMD_GET_STATE;
zassert_ok(host_command_process(&args), "Failed to get charge state");
zassert_true(charge_response.get_state.ac, "USB default but AC absent");
/*
* TODO(b/213909940): This check will fail if test_suite_smart_battery
* has not been run previously. Figure out why and fix it.
*/
zassert_equal(charge_response.get_state.chg_voltage, 5000,
"USB default voltage %dmV",
charge_response.get_state.chg_voltage);
zassert_true(charge_response.get_state.chg_current > 0,
"USB default current %dmA",
charge_response.get_state.chg_current);
typec_params.port = 0;
zassert_ok(host_command_process(&typec_args),
"Failed to get Type-C state");
zassert_true(typec_response.pd_enabled,
"Charger attached but PD disabled");
zassert_true(typec_response.dev_connected,
"Charger attached but device disconnected");
zassert_true(typec_response.sop_connected,
"Charger attached but not SOP capable");
zassert_equal(typec_response.source_cap_count, 1,
"Charger has %d source PDOs",
typec_response.source_cap_count);
zassert_equal(typec_response.power_role, PD_ROLE_SINK,
"Charger attached, but TCPM power role is %d",
typec_response.power_role);
/*
* 3. Wait for SenderResponseTimeout. Expect TCPM to send Request.
* We could verify that the Request references the expected PDO, but
* the voltage/current/PDO checks at the end of the test should all be
* wrong if the requested PDO was wrong here.
*/
/*
* 4. Send Accept and PS_RDY from partner with appropriate delay between
* them. Emulate supplying VBUS at the requested voltage/current before
* PS_RDY.
*/
/*
* 5. Check the charging voltage and current. Cross-check the PD state,
* the battery/charger state, and the active PDO as reported by the PD
* state.
*/
}
static void test_attach_sink(void)
{
const struct emul *tcpci_emul =
emul_get_binding(DT_LABEL(TCPCI_EMUL_LABEL));
struct tcpci_snk_emul my_sink;
/* Set chipset to ON, this will set TCPM to DRP */
test_set_chipset_to_s0();
/* TODO(b/214401892): Check why need to give time TCPM to spin */
k_sleep(K_SECONDS(1));
/* Attach emulated sink */
tcpci_snk_emul_init(&my_sink);
zassert_ok(tcpci_snk_emul_connect_to_tcpci(&my_sink.data,
&my_sink.common_data,
&my_sink.ops, tcpci_emul),
NULL);
/* Wait for PD negotiation */
k_sleep(K_SECONDS(10));
/* Test if partner believe that PD negotiation is completed */
zassert_true(my_sink.data.pd_completed, NULL);
/*
* Test that SRC ready is achieved
* TODO: Change it to examining EC_CMD_TYPEC_STATUS
*/
zassert_equal(PE_SRC_READY, get_state_pe(USBC_PORT_C0), NULL);
}
static void test_attach_drp(void)
{
const struct emul *tcpci_emul =
emul_get_binding(DT_LABEL(TCPCI_EMUL_LABEL));
struct tcpci_drp_emul my_drp;
/* Set chipset to ON, this will set TCPM to DRP */
test_set_chipset_to_s0();
/* TODO(b/214401892): Check why need to give time TCPM to spin */
k_sleep(K_SECONDS(1));
/* Attach emulated sink */
tcpci_drp_emul_init(&my_drp);
zassert_ok(tcpci_drp_emul_connect_to_tcpci(&my_drp.data,
&my_drp.src_data,
&my_drp.snk_data,
&my_drp.common_data,
&my_drp.ops, tcpci_emul),
NULL);
/* Wait for PD negotiation */
k_sleep(K_SECONDS(10));
/*
* Test that SRC ready is achieved
* TODO: Change it to examining EC_CMD_TYPEC_STATUS
*/
zassert_equal(PE_SNK_READY, get_state_pe(USBC_PORT_C0), NULL);
}
void test_suite_integration_usb(void)
{
ztest_test_suite(integration_usb,
ztest_user_unit_test_setup_teardown(
test_attach_compliant_charger, init_tcpm,
remove_emulated_devices),
ztest_user_unit_test_setup_teardown(
test_attach_pd_charger, init_tcpm,
remove_emulated_devices),
ztest_user_unit_test_setup_teardown(
test_attach_sink, init_tcpm,
remove_emulated_devices),
ztest_user_unit_test_setup_teardown(
test_attach_drp, init_tcpm,
remove_emulated_devices));
ztest_run_test_suite(integration_usb);
}
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