diff options
Diffstat (limited to 'zephyr/test/drivers/default/src/i2c.c')
| -rw-r--r-- | zephyr/test/drivers/default/src/i2c.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/zephyr/test/drivers/default/src/i2c.c b/zephyr/test/drivers/default/src/i2c.c new file mode 100644 index 0000000000..caced4aedf --- /dev/null +++ b/zephyr/test/drivers/default/src/i2c.c @@ -0,0 +1,145 @@ +/* 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/kernel.h> +#include <zephyr/ztest.h> + +#include "ec_commands.h" +#include "host_command.h" +#include "i2c.h" +#include "test/drivers/test_state.h" + +ZTEST_USER(i2c, test_i2c_set_speed_success) +{ + struct ec_response_i2c_control response; + struct ec_params_i2c_control get_params = { + .port = I2C_PORT_USB_C0, + .cmd = EC_I2C_CONTROL_GET_SPEED, + }; + struct host_cmd_handler_args get_args = + BUILD_HOST_COMMAND(EC_CMD_I2C_CONTROL, 0, response, get_params); + struct ec_params_i2c_control set_params = { + .port = I2C_PORT_USB_C0, + .cmd = EC_I2C_CONTROL_SET_SPEED, + }; + struct host_cmd_handler_args set_args = + BUILD_HOST_COMMAND(EC_CMD_I2C_CONTROL, 0, response, set_params); + + /* Get the speed: 100. */ + zassert_ok(host_command_process(&get_args), NULL); + zassert_ok(get_args.result, NULL); + zassert_equal(get_args.response_size, sizeof(response), NULL); + zassert_equal(response.cmd_response.speed_khz, 100, + "response.cmd_response.speed_khz = %d", + response.cmd_response.speed_khz); + + /* Set the speed to 400. */ + set_params.cmd_params.speed_khz = 400; + zassert_ok(host_command_process(&set_args), NULL); + zassert_ok(set_args.result, NULL); + zassert_equal(set_args.response_size, sizeof(response), NULL); + zassert_equal(response.cmd_response.speed_khz, 100, + "response.cmd_response.speed_khz = %d", + response.cmd_response.speed_khz); + + /* Get the speed to verify. */ + zassert_ok(host_command_process(&get_args), NULL); + zassert_ok(get_args.result, NULL); + zassert_equal(get_args.response_size, sizeof(response), NULL); + zassert_equal(response.cmd_response.speed_khz, 400, + "response.cmd_response.speed_khz = %d", + response.cmd_response.speed_khz); + + /* Set the speed back to 100. */ + set_params.cmd_params.speed_khz = 100; + zassert_ok(host_command_process(&set_args), NULL); + zassert_ok(set_args.result, NULL); + zassert_equal(set_args.response_size, sizeof(response), NULL); + zassert_equal(response.cmd_response.speed_khz, 400, + "response.cmd_response.speed_khz = %d", + response.cmd_response.speed_khz); +} + +ZTEST_USER(i2c, test_i2c_set_speed_not_dynamic) +{ + struct ec_response_i2c_control response; + struct ec_params_i2c_control set_params = { + .port = I2C_PORT_POWER, + .cmd = EC_I2C_CONTROL_SET_SPEED, + .cmd_params.speed_khz = 400, + }; + struct host_cmd_handler_args set_args = + BUILD_HOST_COMMAND(EC_CMD_I2C_CONTROL, 0, response, set_params); + + /* Set the speed to 400 on a bus which doesn't support dynamic-speed. */ + zassert_equal(EC_RES_ERROR, host_command_process(&set_args), NULL); +} + +ZTEST_USER(i2c, test_i2c_control_wrong_port) +{ + struct ec_response_i2c_control response; + struct ec_params_i2c_control get_params = { + .port = 10, + .cmd = EC_I2C_CONTROL_GET_SPEED, + }; + struct host_cmd_handler_args get_args = + BUILD_HOST_COMMAND(EC_CMD_I2C_CONTROL, 0, response, get_params); + + /* Set the .port=10, which is not defined. */ + zassert_equal(EC_RES_INVALID_PARAM, host_command_process(&get_args), + NULL); +} + +ZTEST_USER(i2c, test_i2c_control_wrong_cmd) +{ + struct ec_response_i2c_control response; + struct ec_params_i2c_control params = { + .port = I2C_PORT_USB_C0, + .cmd = 10, + }; + struct host_cmd_handler_args args = + BUILD_HOST_COMMAND(EC_CMD_I2C_CONTROL, 0, response, params); + + /* Call the .cmd=10, which is not defined. */ + zassert_equal(EC_RES_INVALID_COMMAND, host_command_process(&args), + NULL); +} + +ZTEST_USER(i2c, test_i2c_set_speed_wrong_freq) +{ + struct ec_response_i2c_control response; + struct ec_params_i2c_control set_params = { + .port = I2C_PORT_USB_C0, + .cmd = EC_I2C_CONTROL_SET_SPEED, + .cmd_params.speed_khz = 123, + }; + struct host_cmd_handler_args set_args = + BUILD_HOST_COMMAND(EC_CMD_I2C_CONTROL, 0, response, set_params); + + /* Set the speed to 123 KHz (an invalid speed). */ + zassert_equal(EC_RES_INVALID_PARAM, host_command_process(&set_args), + NULL); +} + +static void i2c_freq_reset(void) +{ + /* The test modifies this port. Reset it to the DTS defined. */ + zassert_ok(i2c_set_freq(I2C_PORT_USB_C0, I2C_FREQ_100KHZ), NULL); +} + +static void *i2c_setup(void) +{ + i2c_freq_reset(); + return NULL; +} + +static void i2c_teardown(void *state) +{ + ARG_UNUSED(state); + i2c_freq_reset(); +} + +ZTEST_SUITE(i2c, drivers_predicate_post_main, i2c_setup, NULL, NULL, + i2c_teardown); |