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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 <ztest_assert.h>
#include "emul/emul_syv682x.h"
#include "stubs.h"
#include "syv682x.h"
#include "timer.h"
#include "usbc_ppc.h"
#define SYV682X_ORD DT_DEP_ORD(DT_NODELABEL(syv682x_emul))
static const int syv682x_port = 1;
static void test_ppc_syv682x_vbus_enable(void)
{
struct i2c_emul *emul = syv682x_emul_get(SYV682X_ORD);
uint8_t reg;
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_1_REG, ®),
"Reading CONTROL_1 failed");
zassert_equal(reg & SYV682X_CONTROL_1_PWR_ENB,
SYV682X_CONTROL_1_PWR_ENB, "VBUS sourcing disabled");
zassert_false(ppc_is_sourcing_vbus(syv682x_port),
"PPC sourcing VBUS at beginning of test");
zassert_ok(ppc_vbus_source_enable(syv682x_port, true),
"VBUS enable failed");
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_1_REG, ®),
"Reading CONTROL_1 failed");
zassert_equal(reg & SYV682X_CONTROL_1_PWR_ENB, 0,
"VBUS sourcing disabled");
zassert_true(ppc_is_sourcing_vbus(syv682x_port),
"PPC is not sourcing VBUS after VBUS enabled");
}
static void test_ppc_syv682x_interrupt(void)
{
struct i2c_emul *emul = syv682x_emul_get(SYV682X_ORD);
uint8_t reg;
syv682x_emul_set_status(emul, SYV682X_STATUS_OC_5V);
syv682x_interrupt(syv682x_port);
/* An OC event less than 100 ms should not cause VBUS to turn off. */
msleep(50);
syv682x_interrupt(syv682x_port);
zassert_true(ppc_is_sourcing_vbus(syv682x_port),
"PPC is not sourcing VBUS after 50 ms OC");
/* But one greater than 100 ms should. */
msleep(60);
syv682x_interrupt(syv682x_port);
zassert_false(ppc_is_sourcing_vbus(syv682x_port),
"PPC is sourcing VBUS after 100 ms OC");
syv682x_emul_set_status(emul, 0x0);
/*
* TODO(b/190519131): Organize the tests to be more hermetic and avoid
* the following issue: The driver triggers overcurrent protection. If
* overcurrent protection is triggered 3 times, the TC won't turn the
* port back on without a detach. This could frustrate efforts to test
* the TC.
*/
/*
* A TSD event should cause the driver to disable source and sink paths.
* (The device will have already physically disabled them.) The state of
* the sink path is not part of the driver's API.
*/
zassert_ok(ppc_vbus_source_enable(syv682x_port, true),
"Source enable failed");
syv682x_emul_set_status(emul, SYV682X_STATUS_TSD);
syv682x_interrupt(syv682x_port);
msleep(1);
zassert_false(ppc_is_sourcing_vbus(syv682x_port),
"PPC is sourcing power after TSD");
syv682x_emul_set_status(emul, 0);
/* An OVP event should cause the driver to disable the source path. */
zassert_ok(ppc_vbus_source_enable(syv682x_port, true),
"Source enable failed");
syv682x_emul_set_status(emul, SYV682X_STATUS_OVP);
syv682x_interrupt(syv682x_port);
msleep(1);
zassert_false(ppc_is_sourcing_vbus(syv682x_port),
"PPC is sourcing power after OVP");
syv682x_emul_set_status(emul, 0);
/*
* A high-voltage OC while sinking should cause the driver to try to
* re-enable the sink path until the OC count limit is reached, at which
* point the driver should leave it disabled.
*/
zassert_ok(ppc_vbus_sink_enable(syv682x_port, true),
"Sink enable failed");
syv682x_emul_set_status(emul, SYV682X_STATUS_OC_HV);
syv682x_interrupt(syv682x_port);
msleep(1);
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_1_REG, ®),
"Reading CONTROL_1 failed");
zassert_equal(reg & SYV682X_CONTROL_1_PWR_ENB, 0,
"Power path disabled after HV_OC handled");
syv682x_emul_set_status(emul, SYV682X_STATUS_OC_HV);
syv682x_interrupt(syv682x_port);
msleep(1);
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_1_REG, ®),
"Reading CONTROL_1 failed");
zassert_equal(reg & SYV682X_CONTROL_1_PWR_ENB, 0,
"Power path disabled after HV_OC handled");
syv682x_emul_set_status(emul, SYV682X_STATUS_OC_HV);
syv682x_interrupt(syv682x_port);
msleep(1);
zassert_ok(syv682x_emul_get_reg(emul, SYV682X_CONTROL_1_REG, ®),
"Reading CONTROL_1 failed");
zassert_equal(reg & SYV682X_CONTROL_1_PWR_ENB,
SYV682X_CONTROL_1_PWR_ENB,
"Power path enabled after HV_OC handled 3 times");
syv682x_emul_set_status(emul, 0);
}
static void test_ppc_syv682x(void)
{
zassert_ok(ppc_init(syv682x_port), "PPC init failed");
test_ppc_syv682x_vbus_enable();
test_ppc_syv682x_interrupt();
}
void test_suite_ppc(void)
{
ztest_test_suite(ppc,
ztest_user_unit_test(test_ppc_syv682x));
ztest_run_test_suite(ppc);
}
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