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/* Copyright 2022 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <zephyr/device.h>
#include <zephyr/devicetree.h>
#include <zephyr/kernel.h>
#include <zephyr/ztest.h>
#include <zephyr/drivers/gpio/gpio_emul.h>
#include <zephyr/shell/shell_dummy.h>
#include "gpio_signal.h"
#include "power/qcom.h"
#include "battery.h"
#include "ec_app_main.h"
#include "power.h"
#include "console.h"
#include "task.h"
#include "hooks.h"
#define AP_RST_L_NODE DT_PATH(named_gpios, ap_rst_l)
#define POWER_GOOD_NODE DT_PATH(named_gpios, mb_power_good)
#define AP_SUSPEND_NODE DT_PATH(named_gpios, ap_suspend)
static int chipset_reset_count;
static void do_chipset_reset(void)
{
chipset_reset_count++;
}
DECLARE_HOOK(HOOK_CHIPSET_RESET, do_chipset_reset, HOOK_PRIO_DEFAULT);
/* Tests the chipset_ap_rst_interrupt() handler when in S3.
*
* When the system is in S3, and ap_rst_l is pulsed 1-3 times then
* HOOK_CHIPSET_RESET hooks will run, and interrupts will be disabled for
* ap_suspend (see power_chipset_handle_host_sleep_event). This may be
* artificial, since I'm not sure that this scenario can actually ever happen.
*/
static void do_chipset_ap_rst_interrupt_in_s3(int times)
{
static const struct device *ap_rst_dev =
DEVICE_DT_GET(DT_GPIO_CTLR(AP_RST_L_NODE, gpios));
static const struct device *power_good_dev =
DEVICE_DT_GET(DT_GPIO_CTLR(POWER_GOOD_NODE, gpios));
static const struct device *ap_suspend_dev =
DEVICE_DT_GET(DT_GPIO_CTLR(AP_SUSPEND_NODE, gpios));
/* Preconditions */
power_signal_enable_interrupt(GPIO_AP_SUSPEND);
power_signal_enable_interrupt(GPIO_AP_RST_L);
zassert_ok(gpio_emul_input_set(power_good_dev,
DT_GPIO_PIN(POWER_GOOD_NODE, gpios), 1));
zassert_ok(gpio_emul_input_set(ap_suspend_dev,
DT_GPIO_PIN(AP_SUSPEND_NODE, gpios), 1));
power_set_state(POWER_S3);
task_wake(TASK_ID_CHIPSET);
k_sleep(K_MSEC(10));
zassert_equal(power_get_state(), POWER_S3);
shell_backend_dummy_clear_output(get_ec_shell());
chipset_reset_count = 0;
/* Pulse gpio_ap_rst_l `times` */
for (int i = 0; i < times; ++i) {
zassert_ok(gpio_emul_input_set(
ap_rst_dev, DT_GPIO_PIN(AP_RST_L_NODE, gpios), 1));
zassert_ok(gpio_emul_input_set(
ap_rst_dev, DT_GPIO_PIN(AP_RST_L_NODE, gpios), 0));
}
/* Wait for timeout AP_RST_TRANSITION_TIMEOUT. */
k_sleep(K_MSEC(500));
/* Verify that gpio_ap_suspend is ignored. */
zassert_ok(gpio_emul_input_set(ap_suspend_dev,
DT_GPIO_PIN(AP_SUSPEND_NODE, gpios), 0));
k_sleep(K_MSEC(10));
zassert_equal(power_get_state(), POWER_S3);
/* Verify that HOOK_CHIPSET_RESET was called once. */
zassert_equal(chipset_reset_count, 1);
}
ZTEST(qcom_power, test_notify_chipset_reset_s3_timeout)
{
const char *buffer;
size_t buffer_size;
do_chipset_ap_rst_interrupt_in_s3(1);
buffer = shell_backend_dummy_get_output(get_ec_shell(), &buffer_size);
zassert_true(strstr(buffer, "AP_RST_L transitions not expected: 1") !=
NULL,
"Invalid console output %s", buffer);
zassert_true(strstr(buffer, "Chipset reset: exit s3") != NULL,
"Invalid console output %s", buffer);
}
ZTEST(qcom_power, test_notify_chipset_reset_s3)
{
const char *buffer;
size_t buffer_size;
do_chipset_ap_rst_interrupt_in_s3(3);
buffer = shell_backend_dummy_get_output(get_ec_shell(), &buffer_size);
zassert_false(strstr(buffer, "AP_RST_L transitions not expected") !=
NULL,
"Invalid console output %s", buffer);
zassert_true(strstr(buffer, "Chipset reset: exit s3") != NULL,
"Invalid console output %s", buffer);
}
/* Tests the chipset_ap_rst_interrupt() handler when in S0.
*
* When the system is in S0, and ap_rst_l is pulsed 1-3 times then
* HOOK_CHIPSET_RESET hooks will run, and that is pretty much all that happens.
*/
static void do_chipset_ap_rst_interrupt_in_s0(int times)
{
static const struct device *ap_rst_dev =
DEVICE_DT_GET(DT_GPIO_CTLR(AP_RST_L_NODE, gpios));
static const struct device *power_good_dev =
DEVICE_DT_GET(DT_GPIO_CTLR(POWER_GOOD_NODE, gpios));
static const struct device *ap_suspend_dev =
DEVICE_DT_GET(DT_GPIO_CTLR(AP_SUSPEND_NODE, gpios));
/* Preconditions */
zassert_ok(gpio_emul_input_set(power_good_dev,
DT_GPIO_PIN(POWER_GOOD_NODE, gpios), 1));
zassert_ok(gpio_emul_input_set(ap_suspend_dev,
DT_GPIO_PIN(AP_SUSPEND_NODE, gpios), 0));
power_set_state(POWER_S0);
power_signal_disable_interrupt(GPIO_AP_SUSPEND);
power_signal_enable_interrupt(GPIO_AP_RST_L);
task_wake(TASK_ID_CHIPSET);
k_sleep(K_MSEC(10));
zassert_equal(power_get_state(), POWER_S0);
shell_backend_dummy_clear_output(get_ec_shell());
chipset_reset_count = 0;
/* Pulse gpio_ap_rst_l `times` */
for (int i = 0; i < times; ++i) {
zassert_ok(gpio_emul_input_set(
ap_rst_dev, DT_GPIO_PIN(AP_RST_L_NODE, gpios), 1));
zassert_ok(gpio_emul_input_set(
ap_rst_dev, DT_GPIO_PIN(AP_RST_L_NODE, gpios), 0));
}
/* Wait for timeout AP_RST_TRANSITION_TIMEOUT. */
k_sleep(K_MSEC(500));
/* Verify that HOOK_CHIPSET_RESET was called once. */
zassert_equal(chipset_reset_count, 1);
}
ZTEST(qcom_power, test_notify_chipset_reset_s0_timeout)
{
const char *buffer;
size_t buffer_size;
do_chipset_ap_rst_interrupt_in_s0(1);
buffer = shell_backend_dummy_get_output(get_ec_shell(), &buffer_size);
zassert_true(strstr(buffer, "AP_RST_L transitions not expected: 1") !=
NULL,
"Invalid console output %s", buffer);
zassert_false(strstr(buffer, "Chipset reset: exit s3") != NULL,
"Invalid console output %s", buffer);
}
ZTEST(qcom_power, test_notify_chipset_reset_s0)
{
const char *buffer;
size_t buffer_size;
do_chipset_ap_rst_interrupt_in_s0(3);
buffer = shell_backend_dummy_get_output(get_ec_shell(), &buffer_size);
zassert_false(strstr(buffer, "AP_RST_L transitions not expected") !=
NULL,
"Invalid console output %s", buffer);
zassert_false(strstr(buffer, "Chipset reset: exit s3") != NULL,
"Invalid console output %s", buffer);
}
ZTEST_SUITE(qcom_power, NULL, NULL, NULL, NULL, NULL);
/* Wait until battery is totally stable */
int battery_wait_for_stable(void)
{
return EC_SUCCESS;
}
void test_main(void)
{
ec_app_main();
/* Fake sleep long enough to go to S5 and back to G3 again. */
k_sleep(K_SECONDS(11));
ztest_run_test_suites(NULL);
ztest_verify_all_test_suites_ran();
}
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