1 /* 2 * QTest testcase for the TMP105 temperature sensor 3 * 4 * Copyright (c) 2012 Andreas Färber 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-single.h" 13 #include "libqos/qgraph.h" 14 #include "libqos/i2c.h" 15 #include "qapi/qmp/qdict.h" 16 #include "hw/sensor/tmp105_regs.h" 17 18 #define TMP105_TEST_ID "tmp105-test" 19 #define TMP105_TEST_ADDR 0x49 20 21 static int qmp_tmp105_get_temperature(const char *id) 22 { 23 QDict *response; 24 int ret; 25 26 response = qmp("{ 'execute': 'qom-get', 'arguments': { 'path': %s, " 27 "'property': 'temperature' } }", id); 28 g_assert(qdict_haskey(response, "return")); 29 ret = qdict_get_int(response, "return"); 30 qobject_unref(response); 31 return ret; 32 } 33 34 static void qmp_tmp105_set_temperature(const char *id, int value) 35 { 36 QDict *response; 37 38 response = qmp("{ 'execute': 'qom-set', 'arguments': { 'path': %s, " 39 "'property': 'temperature', 'value': %d } }", id, value); 40 g_assert(qdict_haskey(response, "return")); 41 qobject_unref(response); 42 } 43 44 #define TMP105_PRECISION (1000/16) 45 static void send_and_receive(void *obj, void *data, QGuestAllocator *alloc) 46 { 47 uint16_t value; 48 QI2CDevice *i2cdev = (QI2CDevice *)obj; 49 50 value = qmp_tmp105_get_temperature(TMP105_TEST_ID); 51 g_assert_cmpuint(value, ==, 0); 52 53 value = i2c_get16(i2cdev, TMP105_REG_TEMPERATURE); 54 g_assert_cmphex(value, ==, 0); 55 56 qmp_tmp105_set_temperature(TMP105_TEST_ID, 20000); 57 value = qmp_tmp105_get_temperature(TMP105_TEST_ID); 58 g_assert_cmpuint(value, ==, 20000); 59 60 value = i2c_get16(i2cdev, TMP105_REG_TEMPERATURE); 61 g_assert_cmphex(value, ==, 0x1400); 62 63 qmp_tmp105_set_temperature(TMP105_TEST_ID, 20938); /* 20 + 15/16 */ 64 value = qmp_tmp105_get_temperature(TMP105_TEST_ID); 65 g_assert_cmpuint(value, >=, 20938 - TMP105_PRECISION/2); 66 g_assert_cmpuint(value, <, 20938 + TMP105_PRECISION/2); 67 68 /* Set config */ 69 i2c_set8(i2cdev, TMP105_REG_CONFIG, 0x60); 70 value = i2c_get8(i2cdev, TMP105_REG_CONFIG); 71 g_assert_cmphex(value, ==, 0x60); 72 73 value = i2c_get16(i2cdev, TMP105_REG_TEMPERATURE); 74 g_assert_cmphex(value, ==, 0x14f0); 75 76 /* Set precision to 9, 10, 11 bits. */ 77 i2c_set8(i2cdev, TMP105_REG_CONFIG, 0x00); 78 g_assert_cmphex(i2c_get8(i2cdev, TMP105_REG_CONFIG), ==, 0x00); 79 value = i2c_get16(i2cdev, TMP105_REG_TEMPERATURE); 80 g_assert_cmphex(value, ==, 0x1480); 81 82 i2c_set8(i2cdev, TMP105_REG_CONFIG, 0x20); 83 g_assert_cmphex(i2c_get8(i2cdev, TMP105_REG_CONFIG), ==, 0x20); 84 value = i2c_get16(i2cdev, TMP105_REG_TEMPERATURE); 85 g_assert_cmphex(value, ==, 0x14c0); 86 87 i2c_set8(i2cdev, TMP105_REG_CONFIG, 0x40); 88 g_assert_cmphex(i2c_get8(i2cdev, TMP105_REG_CONFIG), ==, 0x40); 89 value = i2c_get16(i2cdev, TMP105_REG_TEMPERATURE); 90 g_assert_cmphex(value, ==, 0x14e0); 91 92 /* stored precision remains the same */ 93 value = qmp_tmp105_get_temperature(TMP105_TEST_ID); 94 g_assert_cmpuint(value, >=, 20938 - TMP105_PRECISION/2); 95 g_assert_cmpuint(value, <, 20938 + TMP105_PRECISION/2); 96 97 i2c_set8(i2cdev, TMP105_REG_CONFIG, 0x60); 98 g_assert_cmphex(i2c_get8(i2cdev, TMP105_REG_CONFIG), ==, 0x60); 99 value = i2c_get16(i2cdev, TMP105_REG_TEMPERATURE); 100 g_assert_cmphex(value, ==, 0x14f0); 101 102 i2c_set16(i2cdev, TMP105_REG_T_LOW, 0x1234); 103 g_assert_cmphex(i2c_get16(i2cdev, TMP105_REG_T_LOW), ==, 0x1230); 104 i2c_set16(i2cdev, TMP105_REG_T_HIGH, 0x4231); 105 g_assert_cmphex(i2c_get16(i2cdev, TMP105_REG_T_HIGH), ==, 0x4230); 106 } 107 108 static void tmp105_register_nodes(void) 109 { 110 QOSGraphEdgeOptions opts = { 111 .extra_device_opts = "id=" TMP105_TEST_ID ",address=0x49" 112 }; 113 add_qi2c_address(&opts, &(QI2CAddress) { 0x49 }); 114 115 qos_node_create_driver("tmp105", i2c_device_create); 116 qos_node_consumes("tmp105", "i2c-bus", &opts); 117 118 qos_add_test("tx-rx", "tmp105", send_and_receive, NULL); 119 } 120 libqos_init(tmp105_register_nodes); 121