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/* Copyright 2023 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "battery_smart.h"
#include "charger.h"
#include "console.h"
#include "driver/ppc/nx20p348x.h"
#include "driver/ppc/nx20p348x_public.h"
#include "nx20p348x_test_shared.h"
#include "test/drivers/stubs.h"
#include "test/drivers/test_state.h"
#include "test/drivers/utils.h"
#include "usb_pd_tcpm.h"
#include <zephyr/shell/shell.h>
#include <zephyr/shell/shell_dummy.h>
#include <zephyr/ztest.h>
#define NX20P383X_NODE DT_NODELABEL(nx20p348x_emul)
static void *nx20p348x_driver_setup(void)
{
static struct nx20p348x_driver_fixture fix;
fix.nx20p348x_emul = EMUL_DT_GET(NX20P383X_NODE);
return &fix;
}
ZTEST_SUITE(nx20p348x_driver, drivers_predicate_post_main,
nx20p348x_driver_setup, NULL, NULL, NULL);
struct curr_limit_pair {
enum tcpc_rp_value rp;
uint8_t reg;
};
/* Note: Register values are slightly higher to account for overshoot */
static struct curr_limit_pair currents[] = {
{ .rp = TYPEC_RP_3A0, .reg = NX20P348X_ILIM_3_200 },
{ .rp = TYPEC_RP_1A5, .reg = NX20P348X_ILIM_1_600 },
{ .rp = TYPEC_RP_USB, .reg = NX20P348X_ILIM_0_600 },
};
ZTEST_F(nx20p348x_driver, test_source_curr_limits)
{
for (int i = 0; i < ARRAY_SIZE(currents); i++) {
uint8_t read;
ppc_set_vbus_source_current_limit(TEST_PORT, currents[i].rp);
read = nx20p348x_emul_peek(fixture->nx20p348x_emul,
NX20P348X_5V_SRC_OCP_THRESHOLD_REG);
zassert_equal(
(read & NX20P348X_ILIM_MASK), currents[i].reg,
"Failed to see correct threshold for Rp %d (reg: 0x%02x)",
currents[i].rp, read);
}
}
ZTEST_F(nx20p348x_driver, test_discharge_vbus)
{
uint8_t reg;
zassert_ok(ppc_discharge_vbus(TEST_PORT, true));
reg = nx20p348x_emul_peek(fixture->nx20p348x_emul,
NX20P348X_DEVICE_CONTROL_REG);
zassert_equal((reg & NX20P348X_CTRL_VBUSDIS_EN),
NX20P348X_CTRL_VBUSDIS_EN);
zassert_ok(ppc_discharge_vbus(TEST_PORT, false));
reg = nx20p348x_emul_peek(fixture->nx20p348x_emul,
NX20P348X_DEVICE_CONTROL_REG);
zassert_not_equal((reg & NX20P348X_CTRL_VBUSDIS_EN),
NX20P348X_CTRL_VBUSDIS_EN);
}
ZTEST(nx20p348x_driver, test_ppc_dump)
{
const struct shell *shell_zephyr = get_ec_shell();
const char *outbuffer;
size_t buffer_size;
shell_backend_dummy_clear_output(shell_zephyr);
/* This chip supports PPC dump, so should return success */
zassert_ok(shell_execute_cmd(shell_zephyr, "ppc_dump 0"));
outbuffer = shell_backend_dummy_get_output(shell_zephyr, &buffer_size);
zassert_true(buffer_size > 0);
/* Weakly verify something reasonable was output to console */
zassert_not_null(strstr(outbuffer, "]: 0x"));
}
ZTEST_F(nx20p348x_driver, test_db_exit_err)
{
uint8_t reg;
/* Test an error to exit dead battery mode */
nx20p348x_emul_set_interrupt1(fixture->nx20p348x_emul,
NX20P348X_INT1_DBEXIT_ERR);
/* Give the interrupt time to process */
k_sleep(K_MSEC(500));
/* Interrupt should have set DB exit in the control register */
reg = nx20p348x_emul_peek(fixture->nx20p348x_emul,
NX20P348X_DEVICE_CONTROL_REG);
zassert_equal((reg & NX20P348X_CTRL_DB_EXIT), NX20P348X_CTRL_DB_EXIT);
}
ZTEST_F(nx20p348x_driver, test_db_exit_err_max)
{
uint8_t reg;
/* Set a DB exit error 10 times */
for (int i = 0; i < 10; i++) {
nx20p348x_emul_set_interrupt1(fixture->nx20p348x_emul,
NX20P348X_INT1_DBEXIT_ERR);
k_sleep(K_MSEC(500));
}
/* Interrupt should now be masked by the driver */
reg = nx20p348x_emul_peek(fixture->nx20p348x_emul,
NX20P348X_INTERRUPT1_MASK_REG);
zassert_equal((reg & NX20P348X_INT1_DBEXIT_ERR),
NX20P348X_INT1_DBEXIT_ERR);
}
/* Add filler in case of event data */
#define MAX_RESPONSE_PD_LOG_ENTRY_SIZE (sizeof(struct ec_response_pd_log) + 16)
static void flush_pd_log(void)
{
uint8_t response_buffer[MAX_RESPONSE_PD_LOG_ENTRY_SIZE];
struct ec_response_pd_log *response =
(struct ec_response_pd_log *)response_buffer;
struct host_cmd_handler_args args =
BUILD_HOST_COMMAND_SIMPLE(EC_CMD_PD_GET_LOG_ENTRY, 0);
args.response = response;
args.response_max = sizeof(response_buffer);
for (int i = 0; i < 10; i++) {
zassert_ok(host_command_process(&args));
if (response->type == PD_EVENT_NO_ENTRY)
return;
k_sleep(K_MSEC(500));
}
zassert_unreachable("Failed to flush PD log");
}
ZTEST_F(nx20p348x_driver, test_vbus_overcurrent)
{
uint8_t response_buffer[MAX_RESPONSE_PD_LOG_ENTRY_SIZE];
struct ec_response_pd_log *response =
(struct ec_response_pd_log *)response_buffer;
struct host_cmd_handler_args args =
BUILD_HOST_COMMAND_SIMPLE(EC_CMD_PD_GET_LOG_ENTRY, 0);
flush_pd_log();
/* Set up overcurrent */
nx20p348x_emul_set_interrupt1(fixture->nx20p348x_emul,
NX20P348X_INT1_OC_5VSRC);
k_sleep(K_MSEC(500));
args.response = response;
args.response_max = sizeof(response_buffer);
zassert_ok(host_command_process(&args));
zassert_equal(TEST_PORT, PD_LOG_PORT(response->size_port));
zassert_equal(0, PD_LOG_SIZE(response->size_port));
zassert_equal(PD_EVENT_PS_FAULT, response->type);
zassert_equal(PS_FAULT_OCP, response->data);
}
ZTEST_F(nx20p348x_driver, test_vbus_reverse_current)
{
uint8_t response_buffer[MAX_RESPONSE_PD_LOG_ENTRY_SIZE];
struct ec_response_pd_log *response =
(struct ec_response_pd_log *)response_buffer;
struct host_cmd_handler_args args =
BUILD_HOST_COMMAND_SIMPLE(EC_CMD_PD_GET_LOG_ENTRY, 0);
flush_pd_log();
/* Set up reverse current */
nx20p348x_emul_set_interrupt1(fixture->nx20p348x_emul,
NX20P348X_INT1_RCP_5VSRC);
k_sleep(K_MSEC(500));
args.response = response;
args.response_max = sizeof(response_buffer);
zassert_ok(host_command_process(&args));
zassert_equal(TEST_PORT, PD_LOG_PORT(response->size_port));
zassert_equal(0, PD_LOG_SIZE(response->size_port));
zassert_equal(PD_EVENT_PS_FAULT, response->type);
zassert_equal(PS_FAULT_OCP, response->data);
}
ZTEST_F(nx20p348x_driver, test_vbus_short)
{
const struct shell *shell_zephyr = get_ec_shell();
const char *outbuffer;
size_t buffer_size;
shell_backend_dummy_clear_output(shell_zephyr);
/* Set up Vbus short, which we only report in the console */
nx20p348x_emul_set_interrupt1(fixture->nx20p348x_emul,
NX20P348X_INT1_SC_5VSRC);
k_sleep(K_MSEC(500));
outbuffer = shell_backend_dummy_get_output(shell_zephyr, &buffer_size);
zassert_true(buffer_size > 0);
/* Weakly verify something reasonable was output to console */
zassert_not_null(strstr(outbuffer, "short"));
}
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