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/qgraph.h" 14 #include "libqos/i2c.h" 15 #include "hw/gpio/pca9552_regs.h" 16 17 #define PCA9552_TEST_ID "pca9552-test" 18 #define PCA9552_TEST_ADDR 0x60 19 20 static void pca9552_init(QI2CDevice *i2cdev) 21 { 22 /* Switch on LEDs 0 and 12 */ 23 i2c_set8(i2cdev, PCA9552_LS0, 0x54); 24 i2c_set8(i2cdev, PCA9552_LS3, 0x54); 25 } 26 27 static void receive_autoinc(void *obj, void *data, QGuestAllocator *alloc) 28 { 29 QI2CDevice *i2cdev = (QI2CDevice *)obj; 30 uint8_t resp; 31 uint8_t reg = PCA9552_LS0 | PCA9552_AUTOINC; 32 33 pca9552_init(i2cdev); 34 35 qi2c_send(i2cdev, ®, 1); 36 37 /* PCA9552_LS0 */ 38 qi2c_recv(i2cdev, &resp, 1); 39 g_assert_cmphex(resp, ==, 0x54); 40 41 /* PCA9552_LS1 */ 42 qi2c_recv(i2cdev, &resp, 1); 43 g_assert_cmphex(resp, ==, 0x55); 44 45 /* PCA9552_LS2 */ 46 qi2c_recv(i2cdev, &resp, 1); 47 g_assert_cmphex(resp, ==, 0x55); 48 49 /* PCA9552_LS3 */ 50 qi2c_recv(i2cdev, &resp, 1); 51 g_assert_cmphex(resp, ==, 0x54); 52 } 53 54 static void send_and_receive(void *obj, void *data, QGuestAllocator *alloc) 55 { 56 QI2CDevice *i2cdev = (QI2CDevice *)obj; 57 uint8_t value; 58 59 value = i2c_get8(i2cdev, PCA9552_LS0); 60 g_assert_cmphex(value, ==, 0x55); 61 62 value = i2c_get8(i2cdev, PCA9552_INPUT0); 63 g_assert_cmphex(value, ==, 0xFF); 64 65 pca9552_init(i2cdev); 66 67 value = i2c_get8(i2cdev, PCA9552_LS0); 68 g_assert_cmphex(value, ==, 0x54); 69 70 value = i2c_get8(i2cdev, PCA9552_INPUT0); 71 g_assert_cmphex(value, ==, 0xFE); 72 73 value = i2c_get8(i2cdev, PCA9552_LS3); 74 g_assert_cmphex(value, ==, 0x54); 75 76 value = i2c_get8(i2cdev, PCA9552_INPUT1); 77 g_assert_cmphex(value, ==, 0xEF); 78 } 79 80 static void pca9552_register_nodes(void) 81 { 82 QOSGraphEdgeOptions opts = { 83 .extra_device_opts = "address=0x60" 84 }; 85 add_qi2c_address(&opts, &(QI2CAddress) { 0x60 }); 86 87 qos_node_create_driver("pca9552", i2c_device_create); 88 qos_node_consumes("pca9552", "i2c-bus", &opts); 89 90 qos_add_test("tx-rx", "pca9552", send_and_receive, NULL); 91 qos_add_test("rx-autoinc", "pca9552", receive_autoinc, NULL); 92 } 93 libqos_init(pca9552_register_nodes); 94