| /* |
| * Copyright (c) 2018 Intel Corporation |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <zephyr/drivers/i2c.h> |
| #include <zephyr/kernel.h> |
| #include <zephyr/ztest.h> |
| |
| /* |
| * For ADV7513 Programming details, please |
| * refer to the following link. |
| * https://ez.analog.com/docs/DOC-1986 |
| */ |
| |
| #define ADV7513_HDMI_I2C_SLAVE_ADDR 0x39 |
| |
| #define ADV7513_CHIP_REVISION_REG 0x0 |
| #define CHIP_REVISION_VAL 0x13 |
| |
| #define ADV7513_MAIN_POWER_REG 0x41 |
| #define POWER_ON_VAL 0x10 |
| |
| #define ADV7513_HPD_CTRL_REG 0xD6 |
| #define HPD_CTRL_VAL 0xC0 |
| |
| #define ADV7513_WRITE_TEST_REG 0x2 |
| #define WRITE_TEST_VAL 0x66 |
| |
| static int powerup_adv7513(const struct device *i2c_dev) |
| { |
| uint8_t data; |
| |
| TC_PRINT("Powering up ADV7513\n"); |
| /* write to HPD control registers */ |
| if (i2c_reg_write_byte(i2c_dev, ADV7513_HDMI_I2C_SLAVE_ADDR, |
| ADV7513_HPD_CTRL_REG, HPD_CTRL_VAL)) { |
| TC_PRINT("i2c write fail\n"); |
| return TC_FAIL; |
| } |
| if (i2c_reg_read_byte(i2c_dev, ADV7513_HDMI_I2C_SLAVE_ADDR, |
| 0xD6, &data)) { |
| TC_PRINT("failed to read HPD control\n"); |
| return TC_FAIL; |
| } |
| TC_PRINT("HPD control 0x%x\n", data); |
| |
| /* write to power control registers */ |
| if (i2c_reg_write_byte(i2c_dev, ADV7513_HDMI_I2C_SLAVE_ADDR, |
| ADV7513_MAIN_POWER_REG, POWER_ON_VAL)) { |
| TC_PRINT("i2c write fail\n"); |
| return TC_FAIL; |
| } |
| |
| if (i2c_reg_read_byte(i2c_dev, ADV7513_HDMI_I2C_SLAVE_ADDR, |
| 0x41, &data)) { |
| TC_PRINT("failed to read Power state\n"); |
| return TC_FAIL; |
| } |
| TC_PRINT("Power state 0x%x\n", data); |
| |
| return TC_PASS; |
| } |
| |
| static int test_i2c_adv7513(void) |
| { |
| const struct device *const i2c_dev = DEVICE_DT_GET_ONE(altr_nios2_i2c); |
| uint32_t i2c_cfg = I2C_SPEED_SET(I2C_SPEED_STANDARD) | I2C_MODE_CONTROLLER; |
| uint8_t data; |
| |
| if (!device_is_ready(i2c_dev)) { |
| TC_PRINT("i2c device is not ready\n"); |
| return TC_FAIL; |
| } |
| |
| /* Test i2c_configure() */ |
| if (i2c_configure(i2c_dev, i2c_cfg)) { |
| TC_PRINT("i2c config failed\n"); |
| return TC_FAIL; |
| } |
| |
| /* Power up ADV7513 */ |
| zassert_true(powerup_adv7513(i2c_dev) == TC_PASS, |
| "ADV7513 power up failed"); |
| |
| TC_PRINT("*** Running i2c read/write tests ***\n"); |
| /* Test i2c byte read */ |
| data = 0x0; |
| if (i2c_reg_read_byte(i2c_dev, ADV7513_HDMI_I2C_SLAVE_ADDR, |
| ADV7513_CHIP_REVISION_REG, &data)) { |
| TC_PRINT("failed to read chip revision\n"); |
| return TC_FAIL; |
| } |
| if (data != CHIP_REVISION_VAL) { |
| TC_PRINT("chip revision does not match 0x%x\n", data); |
| return TC_FAIL; |
| } |
| TC_PRINT("i2c read test passed\n"); |
| |
| |
| /* Test i2c byte write */ |
| data = WRITE_TEST_VAL; |
| if (i2c_reg_write_byte(i2c_dev, ADV7513_HDMI_I2C_SLAVE_ADDR, |
| ADV7513_WRITE_TEST_REG, data)) { |
| TC_PRINT("i2c write fail\n"); |
| return TC_FAIL; |
| } |
| data = 0x0; |
| if (i2c_reg_read_byte(i2c_dev, ADV7513_HDMI_I2C_SLAVE_ADDR, |
| ADV7513_WRITE_TEST_REG, &data)) { |
| TC_PRINT("i2c read fail\n"); |
| return TC_FAIL; |
| } |
| if (data != WRITE_TEST_VAL) { |
| TC_PRINT("i2c write test failed 0x%x\n", data); |
| return TC_FAIL; |
| } |
| TC_PRINT("i2c write & verify test passed\n"); |
| |
| return TC_PASS; |
| } |
| |
| ZTEST(nios2_i2c_master, test_i2c_master) |
| { |
| zassert_true(test_i2c_adv7513() == TC_PASS); |
| } |
| |
| ZTEST_SUITE(nios2_i2c_master, NULL, NULL, NULL, NULL, NULL); |