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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 "gpio.h"
#include "gpio/gpio_int.h"
#include "hooks.h"
#include "usbc/ppc.h"
#include <zephyr/devicetree.h>
#include <zephyr/drivers/emul.h>
#include <zephyr/drivers/gpio/gpio_emul.h>
#include <zephyr/fff.h>
#include <zephyr/ztest.h>
FAKE_VALUE_FUNC(int, cbi_get_board_version, uint32_t *);
static int fake_board_version;
static int fake_cbi_get_board_version(uint32_t *ver)
{
*ver = fake_board_version;
return 0;
}
FAKE_VOID_FUNC(ppc_chip_0_interrupt, int);
FAKE_VOID_FUNC(ppc_chip_alt_interrupt, int);
FAKE_VOID_FUNC(ppc_chip_1_interrupt, int);
ZTEST(ppc_tentacruel, test_ppc_init)
{
const struct device *ppc_int_gpio = DEVICE_DT_GET(
DT_GPIO_CTLR(DT_NODELABEL(usb_c0_ppc_int_odl), gpios));
const gpio_port_pins_t ppc_int_pin =
DT_GPIO_PIN(DT_NODELABEL(usb_c0_ppc_int_odl), gpios);
/* Board version 0, expect that main ppc is enabled. */
RESET_FAKE(cbi_get_board_version);
cbi_get_board_version_fake.custom_fake = fake_cbi_get_board_version;
fake_board_version = 0;
hook_notify(HOOK_INIT);
zassert_ok(gpio_emul_input_set(ppc_int_gpio, ppc_int_pin, 1), NULL);
k_sleep(K_MSEC(100));
zassert_ok(gpio_emul_input_set(ppc_int_gpio, ppc_int_pin, 0), NULL);
k_sleep(K_MSEC(100));
zassert_equal(ppc_chip_0_interrupt_fake.call_count, 1);
zassert_equal(ppc_chip_alt_interrupt_fake.call_count, 0);
zassert_equal(ppc_chip_1_interrupt_fake.call_count, 0);
/* CBI access fail, fallback to board version 0 */
RESET_FAKE(cbi_get_board_version);
cbi_get_board_version_fake.return_val = -1;
fake_board_version = 0;
hook_notify(HOOK_INIT);
zassert_ok(gpio_emul_input_set(ppc_int_gpio, ppc_int_pin, 1), NULL);
k_sleep(K_MSEC(100));
zassert_ok(gpio_emul_input_set(ppc_int_gpio, ppc_int_pin, 0), NULL);
k_sleep(K_MSEC(100));
zassert_equal(ppc_chip_0_interrupt_fake.call_count, 2);
zassert_equal(ppc_chip_alt_interrupt_fake.call_count, 0);
zassert_equal(ppc_chip_1_interrupt_fake.call_count, 0);
/* Board version 3, expect that alt ppc is enabled.
* Since PPC_ENABLE_ALTERNATE() is not reversible, we must test this
* after the board version 0 test.
*/
RESET_FAKE(cbi_get_board_version);
cbi_get_board_version_fake.custom_fake = fake_cbi_get_board_version;
fake_board_version = 3;
hook_notify(HOOK_INIT);
zassert_ok(gpio_emul_input_set(ppc_int_gpio, ppc_int_pin, 1), NULL);
k_sleep(K_MSEC(100));
zassert_ok(gpio_emul_input_set(ppc_int_gpio, ppc_int_pin, 0), NULL);
k_sleep(K_MSEC(100));
zassert_equal(ppc_chip_0_interrupt_fake.call_count, 2);
zassert_equal(ppc_chip_alt_interrupt_fake.call_count, 1);
zassert_equal(ppc_chip_1_interrupt_fake.call_count, 0);
}
ZTEST(ppc_tentacruel, test_ppc_1_int)
{
const struct device *x_ec_gpio2 = DEVICE_DT_GET(
DT_GPIO_CTLR(DT_NODELABEL(gpio_x_ec_gpio2), gpios));
const gpio_port_pins_t x_ec_gpio2_pin =
DT_GPIO_PIN(DT_NODELABEL(gpio_x_ec_gpio2), gpios);
zassert_ok(gpio_emul_input_set(x_ec_gpio2, x_ec_gpio2_pin, 1), NULL);
k_sleep(K_MSEC(100));
zassert_ok(gpio_emul_input_set(x_ec_gpio2, x_ec_gpio2_pin, 0), NULL);
k_sleep(K_MSEC(100));
zassert_equal(ppc_chip_0_interrupt_fake.call_count, 0);
zassert_equal(ppc_chip_alt_interrupt_fake.call_count, 0);
zassert_equal(ppc_chip_1_interrupt_fake.call_count, 1);
}
static void *ppc_tentacruel_init(void)
{
static struct ppc_drv fake_ppc_drv_0;
static struct ppc_drv fake_ppc_drv_1;
static struct ppc_drv fake_ppc_drv_alt;
zassert_equal(ppc_cnt, 2);
/* inject mocked interrupt handlers into ppc_drv and ppc_drv_alt */
fake_ppc_drv_0 = *ppc_chips[0].drv;
fake_ppc_drv_0.interrupt = ppc_chip_0_interrupt;
ppc_chips[0].drv = &fake_ppc_drv_0;
fake_ppc_drv_alt = *ppc_chips_alt[0].drv;
fake_ppc_drv_alt.interrupt = ppc_chip_alt_interrupt;
ppc_chips_alt[0].drv = &fake_ppc_drv_alt;
fake_ppc_drv_1 = *ppc_chips[1].drv;
fake_ppc_drv_1.interrupt = ppc_chip_1_interrupt;
ppc_chips[1].drv = &fake_ppc_drv_1;
return NULL;
}
static void ppc_tentacruel_before(void *fixture)
{
RESET_FAKE(cbi_get_board_version);
RESET_FAKE(ppc_chip_0_interrupt);
RESET_FAKE(ppc_chip_alt_interrupt);
RESET_FAKE(ppc_chip_1_interrupt);
/* We have bypassed the db detection, so we force enabling the
* int_x_ec_gpio2.
*/
gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_x_ec_gpio2));
}
ZTEST_SUITE(ppc_tentacruel, NULL, ppc_tentacruel_init, ppc_tentacruel_before,
NULL, NULL);
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