tests/qtest/isl_pmbus_vr-test.c

   1 /*
   2  * QTests for the ISL_PMBUS digital voltage regulators
   3  *
   4  * Copyright 2021 Google LLC
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  14  * for more details.
  15  */
  16
  17 #include "qemu/osdep.h"
  18 #include <math.h>
  19 #include "hw/i2c/pmbus_device.h"
  20 #include "hw/sensor/isl_pmbus_vr.h"
  21 #include "libqtest-single.h"
  22 #include "libqos/qgraph.h"
  23 #include "libqos/i2c.h"
  24 #include "qapi/qmp/qdict.h"
  25 #include "qapi/qmp/qnum.h"
  26 #include "qemu/bitops.h"
  27
  28 #define TEST_ID "isl_pmbus_vr-test"
  29 #define TEST_ADDR (0x43)
  30
  31 static uint16_t qmp_isl_pmbus_vr_get(const char *id, const char *property)
  32 {
  33     QDict *response;
  34     uint64_t ret;
  35
  36     response = qmp("{ 'execute': 'qom-get', 'arguments': { 'path': %s, "
  37                    "'property': %s } }", id, property);
  38     g_assert(qdict_haskey(response, "return"));
  39     ret = qnum_get_uint(qobject_to(QNum, qdict_get(response, "return")));
  40     qobject_unref(response);
  41     return ret;
  42 }
  43
  44 static void qmp_isl_pmbus_vr_set(const char *id,
  45                             const char *property,
  46                             uint16_t value)
  47 {
  48     QDict *response;
  49
  50     response = qmp("{ 'execute': 'qom-set', 'arguments': { 'path': %s, "
  51                    "'property': %s, 'value': %u } }", id, property, value);
  52     g_assert(qdict_haskey(response, "return"));
  53     qobject_unref(response);
  54 }
  55
  56 /* PMBus commands are little endian vs i2c_set16 in i2c.h which is big endian */
  57 static uint16_t isl_pmbus_vr_i2c_get16(QI2CDevice *i2cdev, uint8_t reg)
  58 {
  59     uint8_t resp[2];
  60     i2c_read_block(i2cdev, reg, resp, sizeof(resp));
  61     return (resp[1] << 8) | resp[0];
  62 }
  63
  64 /* PMBus commands are little endian vs i2c_set16 in i2c.h which is big endian */
  65 static void isl_pmbus_vr_i2c_set16(QI2CDevice *i2cdev, uint8_t reg,
  66                                    uint16_t value)
  67 {
  68     uint8_t data[2];
  69
  70     data[0] = value & 255;
  71     data[1] = value >> 8;
  72     i2c_write_block(i2cdev, reg, data, sizeof(data));
  73 }
  74
  75 static void test_defaults(void *obj, void *data, QGuestAllocator *alloc)
  76 {
  77     uint16_t value, i2c_value;
  78     QI2CDevice *i2cdev = (QI2CDevice *)obj;
  79
  80     value = qmp_isl_pmbus_vr_get(TEST_ID, "vout[0]");
  81     g_assert_cmpuint(value, ==, ISL_READ_VOUT_DEFAULT);
  82
  83     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IOUT);
  84     g_assert_cmpuint(i2c_value, ==, ISL_READ_IOUT_DEFAULT);
  85
  86     value = qmp_isl_pmbus_vr_get(TEST_ID, "pout[0]");
  87     g_assert_cmpuint(value, ==, ISL_READ_POUT_DEFAULT);
  88
  89     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_VIN);
  90     g_assert_cmpuint(i2c_value, ==, ISL_READ_VIN_DEFAULT);
  91
  92     value = qmp_isl_pmbus_vr_get(TEST_ID, "iin[0]");
  93     g_assert_cmpuint(value, ==, ISL_READ_IIN_DEFAULT);
  94
  95     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_PIN);
  96     g_assert_cmpuint(i2c_value, ==, ISL_READ_PIN_DEFAULT);
  97
  98     value = qmp_isl_pmbus_vr_get(TEST_ID, "temp1[0]");
  99     g_assert_cmpuint(value, ==, ISL_READ_TEMP_DEFAULT);
 100
 101     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_2);
 102     g_assert_cmpuint(i2c_value, ==, ISL_READ_TEMP_DEFAULT);
 103
 104     i2c_value = i2c_get8(i2cdev, PMBUS_CAPABILITY);
 105     g_assert_cmphex(i2c_value, ==, ISL_CAPABILITY_DEFAULT);
 106
 107     i2c_value = i2c_get8(i2cdev, PMBUS_OPERATION);
 108     g_assert_cmphex(i2c_value, ==, ISL_OPERATION_DEFAULT);
 109
 110     i2c_value = i2c_get8(i2cdev, PMBUS_ON_OFF_CONFIG);
 111     g_assert_cmphex(i2c_value, ==, ISL_ON_OFF_CONFIG_DEFAULT);
 112
 113     i2c_value = i2c_get8(i2cdev, PMBUS_VOUT_MODE);
 114     g_assert_cmphex(i2c_value, ==, ISL_VOUT_MODE_DEFAULT);
 115
 116     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_COMMAND);
 117     g_assert_cmphex(i2c_value, ==, ISL_VOUT_COMMAND_DEFAULT);
 118
 119     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MAX);
 120     g_assert_cmphex(i2c_value, ==, ISL_VOUT_MAX_DEFAULT);
 121
 122     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MARGIN_HIGH);
 123     g_assert_cmphex(i2c_value, ==, ISL_VOUT_MARGIN_HIGH_DEFAULT);
 124
 125     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MARGIN_LOW);
 126     g_assert_cmphex(i2c_value, ==, ISL_VOUT_MARGIN_LOW_DEFAULT);
 127
 128     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_TRANSITION_RATE);
 129     g_assert_cmphex(i2c_value, ==, ISL_VOUT_TRANSITION_RATE_DEFAULT);
 130
 131     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_OV_FAULT_LIMIT);
 132     g_assert_cmphex(i2c_value, ==, ISL_VOUT_OV_FAULT_LIMIT_DEFAULT);
 133
 134     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_OT_FAULT_LIMIT);
 135     g_assert_cmphex(i2c_value, ==, ISL_OT_FAULT_LIMIT_DEFAULT);
 136
 137     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_OT_WARN_LIMIT);
 138     g_assert_cmphex(i2c_value, ==, ISL_OT_WARN_LIMIT_DEFAULT);
 139
 140     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VIN_OV_WARN_LIMIT);
 141     g_assert_cmphex(i2c_value, ==, ISL_VIN_OV_WARN_LIMIT_DEFAULT);
 142
 143     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VIN_UV_WARN_LIMIT);
 144     g_assert_cmphex(i2c_value, ==, ISL_VIN_UV_WARN_LIMIT_DEFAULT);
 145
 146     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_IIN_OC_FAULT_LIMIT);
 147     g_assert_cmphex(i2c_value, ==, ISL_IIN_OC_FAULT_LIMIT_DEFAULT);
 148
 149     i2c_value = i2c_get8(i2cdev, PMBUS_REVISION);
 150     g_assert_cmphex(i2c_value, ==, ISL_REVISION_DEFAULT);
 151 }
 152
 153 /* test qmp access */
 154 static void test_tx_rx(void *obj, void *data, QGuestAllocator *alloc)
 155 {
 156     uint16_t i2c_value, value;
 157     QI2CDevice *i2cdev = (QI2CDevice *)obj;
 158
 159     qmp_isl_pmbus_vr_set(TEST_ID, "vin[0]", 200);
 160     value = qmp_isl_pmbus_vr_get(TEST_ID, "vin[0]");
 161     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_VIN);
 162     g_assert_cmpuint(value, ==, i2c_value);
 163
 164     qmp_isl_pmbus_vr_set(TEST_ID, "vout[0]", 2500);
 165     value = qmp_isl_pmbus_vr_get(TEST_ID, "vout[0]");
 166     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_VOUT);
 167     g_assert_cmpuint(value, ==, i2c_value);
 168
 169     qmp_isl_pmbus_vr_set(TEST_ID, "iin[0]", 300);
 170     value = qmp_isl_pmbus_vr_get(TEST_ID, "iin[0]");
 171     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IIN);
 172     g_assert_cmpuint(value, ==, i2c_value);
 173
 174     qmp_isl_pmbus_vr_set(TEST_ID, "iout[0]", 310);
 175     value = qmp_isl_pmbus_vr_get(TEST_ID, "iout[0]");
 176     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IOUT);
 177     g_assert_cmpuint(value, ==, i2c_value);
 178
 179     qmp_isl_pmbus_vr_set(TEST_ID, "pin[0]", 100);
 180     value = qmp_isl_pmbus_vr_get(TEST_ID, "pin[0]");
 181     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_PIN);
 182     g_assert_cmpuint(value, ==, i2c_value);
 183
 184     qmp_isl_pmbus_vr_set(TEST_ID, "pout[0]", 95);
 185     value = qmp_isl_pmbus_vr_get(TEST_ID, "pout[0]");
 186     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_POUT);
 187     g_assert_cmpuint(value, ==, i2c_value);
 188
 189     qmp_isl_pmbus_vr_set(TEST_ID, "temp1[0]", 26);
 190     value = qmp_isl_pmbus_vr_get(TEST_ID, "temp1[0]");
 191     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_1);
 192     g_assert_cmpuint(value, ==, i2c_value);
 193
 194     qmp_isl_pmbus_vr_set(TEST_ID, "temp2[0]", 27);
 195     value = qmp_isl_pmbus_vr_get(TEST_ID, "temp2[0]");
 196     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_2);
 197     g_assert_cmpuint(value, ==, i2c_value);
 198
 199     qmp_isl_pmbus_vr_set(TEST_ID, "temp3[0]", 28);
 200     value = qmp_isl_pmbus_vr_get(TEST_ID, "temp3[0]");
 201     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_3);
 202     g_assert_cmpuint(value, ==, i2c_value);
 203
 204 }
 205
 206 /* test r/w registers */
 207 static void test_rw_regs(void *obj, void *data, QGuestAllocator *alloc)
 208 {
 209     uint16_t i2c_value;
 210     QI2CDevice *i2cdev = (QI2CDevice *)obj;
 211
 212     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_COMMAND, 0x1234);
 213     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_COMMAND);
 214     g_assert_cmphex(i2c_value, ==, 0x1234);
 215
 216     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_TRIM, 0x4567);
 217     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_TRIM);
 218     g_assert_cmphex(i2c_value, ==, 0x4567);
 219
 220     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_MAX, 0x9876);
 221     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MAX);
 222     g_assert_cmphex(i2c_value, ==, 0x9876);
 223
 224     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_MARGIN_HIGH, 0xABCD);
 225     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MARGIN_HIGH);
 226     g_assert_cmphex(i2c_value, ==, 0xABCD);
 227
 228     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_MARGIN_LOW, 0xA1B2);
 229     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MARGIN_LOW);
 230     g_assert_cmphex(i2c_value, ==, 0xA1B2);
 231
 232     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_TRANSITION_RATE, 0xDEF1);
 233     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_TRANSITION_RATE);
 234     g_assert_cmphex(i2c_value, ==, 0xDEF1);
 235
 236     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_DROOP, 0x5678);
 237     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_DROOP);
 238     g_assert_cmphex(i2c_value, ==, 0x5678);
 239
 240     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_MIN, 0x1234);
 241     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MIN);
 242     g_assert_cmphex(i2c_value, ==, 0x1234);
 243
 244     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_OV_FAULT_LIMIT, 0x2345);
 245     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_OV_FAULT_LIMIT);
 246     g_assert_cmphex(i2c_value, ==, 0x2345);
 247
 248     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_UV_FAULT_LIMIT, 0xFA12);
 249     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_UV_FAULT_LIMIT);
 250     g_assert_cmphex(i2c_value, ==, 0xFA12);
 251
 252     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_OT_FAULT_LIMIT, 0xF077);
 253     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_OT_FAULT_LIMIT);
 254     g_assert_cmphex(i2c_value, ==, 0xF077);
 255
 256     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_OT_WARN_LIMIT, 0x7137);
 257     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_OT_WARN_LIMIT);
 258     g_assert_cmphex(i2c_value, ==, 0x7137);
 259
 260     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VIN_OV_FAULT_LIMIT, 0x3456);
 261     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VIN_OV_FAULT_LIMIT);
 262     g_assert_cmphex(i2c_value, ==, 0x3456);
 263
 264     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VIN_UV_FAULT_LIMIT, 0xBADA);
 265     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VIN_UV_FAULT_LIMIT);
 266     g_assert_cmphex(i2c_value, ==, 0xBADA);
 267
 268     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_IIN_OC_FAULT_LIMIT, 0xB1B0);
 269     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_IIN_OC_FAULT_LIMIT);
 270     g_assert_cmphex(i2c_value, ==, 0xB1B0);
 271
 272     i2c_set8(i2cdev, PMBUS_OPERATION, 0xA);
 273     i2c_value = i2c_get8(i2cdev, PMBUS_OPERATION);
 274     g_assert_cmphex(i2c_value, ==, 0xA);
 275
 276     i2c_set8(i2cdev, PMBUS_ON_OFF_CONFIG, 0x42);
 277     i2c_value = i2c_get8(i2cdev, PMBUS_ON_OFF_CONFIG);
 278     g_assert_cmphex(i2c_value, ==, 0x42);
 279 }
 280
 281 /* test that devices with multiple pages can switch between them */
 282 static void test_pages_rw(void *obj, void *data, QGuestAllocator *alloc)
 283 {
 284     uint16_t i2c_value;
 285     QI2CDevice *i2cdev = (QI2CDevice *)obj;
 286
 287     i2c_set8(i2cdev, PMBUS_PAGE, 1);
 288     i2c_value = i2c_get8(i2cdev, PMBUS_PAGE);
 289     g_assert_cmphex(i2c_value, ==, 1);
 290
 291     i2c_set8(i2cdev, PMBUS_PAGE, 0);
 292     i2c_value = i2c_get8(i2cdev, PMBUS_PAGE);
 293     g_assert_cmphex(i2c_value, ==, 0);
 294 }
 295
 296 /* test read-only registers */
 297 static void test_ro_regs(void *obj, void *data, QGuestAllocator *alloc)
 298 {
 299     uint16_t i2c_init_value, i2c_value;
 300     QI2CDevice *i2cdev = (QI2CDevice *)obj;
 301
 302     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_VIN);
 303     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_VIN, 0xBEEF);
 304     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_VIN);
 305     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 306
 307     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IIN);
 308     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_IIN, 0xB00F);
 309     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IIN);
 310     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 311
 312     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_VOUT);
 313     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_VOUT, 0x1234);
 314     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_VOUT);
 315     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 316
 317     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IOUT);
 318     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_IOUT, 0x6547);
 319     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IOUT);
 320     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 321
 322     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_1);
 323     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_TEMPERATURE_1, 0x1597);
 324     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_1);
 325     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 326
 327     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_2);
 328     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_TEMPERATURE_2, 0x1897);
 329     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_2);
 330     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 331
 332     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_3);
 333     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_TEMPERATURE_3, 0x1007);
 334     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_3);
 335     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 336
 337     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_PIN);
 338     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_PIN, 0xDEAD);
 339     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_PIN);
 340     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 341
 342     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_POUT);
 343     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_POUT, 0xD00D);
 344     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_POUT);
 345     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 346 }
 347
 348 /* test voltage fault handling */
 349 static void test_voltage_faults(void *obj, void *data, QGuestAllocator *alloc)
 350 {
 351     uint16_t i2c_value;
 352     uint8_t i2c_byte;
 353     QI2CDevice *i2cdev = (QI2CDevice *)obj;
 354
 355     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_OV_WARN_LIMIT, 5000);
 356     qmp_isl_pmbus_vr_set(TEST_ID, "vout[0]", 5100);
 357
 358     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_STATUS_WORD);
 359     i2c_byte = i2c_get8(i2cdev, PMBUS_STATUS_VOUT);
 360     g_assert_true((i2c_value & PB_STATUS_VOUT) != 0);
 361     g_assert_true((i2c_byte & PB_STATUS_VOUT_OV_WARN) != 0);
 362
 363     qmp_isl_pmbus_vr_set(TEST_ID, "vout[0]", 4500);
 364     i2c_set8(i2cdev, PMBUS_CLEAR_FAULTS, 0);
 365     i2c_byte = i2c_get8(i2cdev, PMBUS_STATUS_VOUT);
 366     g_assert_true((i2c_byte & PB_STATUS_VOUT_OV_WARN) == 0);
 367
 368     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_UV_WARN_LIMIT, 4600);
 369
 370     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_STATUS_WORD);
 371     i2c_byte = i2c_get8(i2cdev, PMBUS_STATUS_VOUT);
 372     g_assert_true((i2c_value & PB_STATUS_VOUT) != 0);
 373     g_assert_true((i2c_byte & PB_STATUS_VOUT_UV_WARN) != 0);
 374
 375 }
 376
 377 static void isl_pmbus_vr_register_nodes(void)
 378 {
 379     QOSGraphEdgeOptions opts = {
 380         .extra_device_opts = "id=" TEST_ID ",address=0x43"
 381     };
 382     add_qi2c_address(&opts, &(QI2CAddress) { TEST_ADDR });
 383
 384     qos_node_create_driver("isl69260", i2c_device_create);
 385     qos_node_consumes("isl69260", "i2c-bus", &opts);
 386
 387     qos_add_test("test_defaults", "isl69260", test_defaults, NULL);
 388     qos_add_test("test_tx_rx", "isl69260", test_tx_rx, NULL);
 389     qos_add_test("test_rw_regs", "isl69260", test_rw_regs, NULL);
 390     qos_add_test("test_pages_rw", "isl69260", test_pages_rw, NULL);
 391     qos_add_test("test_ro_regs", "isl69260", test_ro_regs, NULL);
 392     qos_add_test("test_ov_faults", "isl69260", test_voltage_faults, NULL);
 393 }
 394 libqos_init(isl_pmbus_vr_register_nodes);