LXR qemu/tests/qtest/tmp105-test.c

   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
  21static 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
  34static 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)
  45static 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), ==, 0x1234);
 104    i2c_set16(i2cdev, TMP105_REG_T_HIGH, 0x4231);
 105    g_assert_cmphex(i2c_get16(i2cdev, TMP105_REG_T_HIGH), ==, 0x4231);
 106}
 107
 108static 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}
 120libqos_init(tmp105_register_nodes);
 121