1 /* 2 * QTest testcase for the PCA9552 LED blinker 3 * 4 * Copyright (c) 2017-2018, IBM Corporation. 5 * 6 * This work is licensed under the terms of the GNU GPL, version 2 or later. 7 * See the COPYING file in the top-level directory. 8 */ 9 10 #include "qemu/osdep.h" 11 12 #include "libqtest.h" 13 #include "libqos/i2c.h" 14 #include "hw/misc/pca9552_regs.h" 15 16 #define PCA9552_TEST_ID "pca9552-test" 17 #define PCA9552_TEST_ADDR 0x60 18 19 static I2CAdapter *i2c; 20 21 static void receive_autoinc(void) 22 { 23 uint8_t resp; 24 uint8_t reg = PCA9552_LS0 | PCA9552_AUTOINC; 25 26 i2c_send(i2c, PCA9552_TEST_ADDR, ®, 1); 27 28 /* PCA9552_LS0 */ 29 i2c_recv(i2c, PCA9552_TEST_ADDR, &resp, 1); 30 g_assert_cmphex(resp, ==, 0x54); 31 32 /* PCA9552_LS1 */ 33 i2c_recv(i2c, PCA9552_TEST_ADDR, &resp, 1); 34 g_assert_cmphex(resp, ==, 0x55); 35 36 /* PCA9552_LS2 */ 37 i2c_recv(i2c, PCA9552_TEST_ADDR, &resp, 1); 38 g_assert_cmphex(resp, ==, 0x55); 39 40 /* PCA9552_LS3 */ 41 i2c_recv(i2c, PCA9552_TEST_ADDR, &resp, 1); 42 g_assert_cmphex(resp, ==, 0x54); 43 } 44 45 static void send_and_receive(void) 46 { 47 uint8_t value; 48 49 value = i2c_get8(i2c, PCA9552_TEST_ADDR, PCA9552_LS0); 50 g_assert_cmphex(value, ==, 0x55); 51 52 value = i2c_get8(i2c, PCA9552_TEST_ADDR, PCA9552_INPUT0); 53 g_assert_cmphex(value, ==, 0x0); 54 55 /* Switch on LED 0 */ 56 i2c_set8(i2c, PCA9552_TEST_ADDR, PCA9552_LS0, 0x54); 57 value = i2c_get8(i2c, PCA9552_TEST_ADDR, PCA9552_LS0); 58 g_assert_cmphex(value, ==, 0x54); 59 60 value = i2c_get8(i2c, PCA9552_TEST_ADDR, PCA9552_INPUT0); 61 g_assert_cmphex(value, ==, 0x01); 62 63 /* Switch on LED 12 */ 64 i2c_set8(i2c, PCA9552_TEST_ADDR, PCA9552_LS3, 0x54); 65 value = i2c_get8(i2c, PCA9552_TEST_ADDR, PCA9552_LS3); 66 g_assert_cmphex(value, ==, 0x54); 67 68 value = i2c_get8(i2c, PCA9552_TEST_ADDR, PCA9552_INPUT1); 69 g_assert_cmphex(value, ==, 0x10); 70 } 71 72 int main(int argc, char **argv) 73 { 74 QTestState *s = NULL; 75 int ret; 76 77 g_test_init(&argc, &argv, NULL); 78 79 s = qtest_start("-machine n800 " 80 "-device pca9552,bus=i2c-bus.0,id=" PCA9552_TEST_ID 81 ",address=0x60"); 82 i2c = omap_i2c_create(s, OMAP2_I2C_1_BASE); 83 84 qtest_add_func("/pca9552/tx-rx", send_and_receive); 85 qtest_add_func("/pca9552/rx-autoinc", receive_autoinc); 86 87 ret = g_test_run(); 88 89 if (s) { 90 qtest_quit(s); 91 } 92 g_free(i2c); 93 94 return ret; 95 } 96