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 static void raa228000_test_defaults(void *obj, void *data,
 154                                     QGuestAllocator *alloc)
 155 {
 156     uint16_t value, i2c_value;
 157     QI2CDevice *i2cdev = (QI2CDevice *)obj;
 158
 159     value = qmp_isl_pmbus_vr_get(TEST_ID, "vout[0]");
 160     g_assert_cmpuint(value, ==, 0);
 161
 162     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IOUT);
 163     g_assert_cmpuint(i2c_value, ==, 0);
 164
 165     value = qmp_isl_pmbus_vr_get(TEST_ID, "pout[0]");
 166     g_assert_cmpuint(value, ==, 0);
 167
 168     i2c_value = i2c_get8(i2cdev, PMBUS_CAPABILITY);
 169     g_assert_cmphex(i2c_value, ==, ISL_CAPABILITY_DEFAULT);
 170
 171     i2c_value = i2c_get8(i2cdev, PMBUS_OPERATION);
 172     g_assert_cmphex(i2c_value, ==, ISL_OPERATION_DEFAULT);
 173
 174     i2c_value = i2c_get8(i2cdev, PMBUS_ON_OFF_CONFIG);
 175     g_assert_cmphex(i2c_value, ==, ISL_ON_OFF_CONFIG_DEFAULT);
 176
 177     i2c_value = i2c_get8(i2cdev, PMBUS_VOUT_MODE);
 178     g_assert_cmphex(i2c_value, ==, ISL_VOUT_MODE_DEFAULT);
 179
 180     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_COMMAND);
 181     g_assert_cmphex(i2c_value, ==, ISL_VOUT_COMMAND_DEFAULT);
 182
 183     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MAX);
 184     g_assert_cmphex(i2c_value, ==, ISL_VOUT_MAX_DEFAULT);
 185
 186     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MARGIN_HIGH);
 187     g_assert_cmphex(i2c_value, ==, ISL_VOUT_MARGIN_HIGH_DEFAULT);
 188
 189     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MARGIN_LOW);
 190     g_assert_cmphex(i2c_value, ==, ISL_VOUT_MARGIN_LOW_DEFAULT);
 191
 192     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_TRANSITION_RATE);
 193     g_assert_cmphex(i2c_value, ==, ISL_VOUT_TRANSITION_RATE_DEFAULT);
 194
 195     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_OV_FAULT_LIMIT);
 196     g_assert_cmphex(i2c_value, ==, ISL_VOUT_OV_FAULT_LIMIT_DEFAULT);
 197
 198     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_OT_FAULT_LIMIT);
 199     g_assert_cmphex(i2c_value, ==, ISL_OT_FAULT_LIMIT_DEFAULT);
 200
 201     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_OT_WARN_LIMIT);
 202     g_assert_cmphex(i2c_value, ==, ISL_OT_WARN_LIMIT_DEFAULT);
 203
 204     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VIN_OV_WARN_LIMIT);
 205     g_assert_cmphex(i2c_value, ==, ISL_VIN_OV_WARN_LIMIT_DEFAULT);
 206
 207     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VIN_UV_WARN_LIMIT);
 208     g_assert_cmphex(i2c_value, ==, ISL_VIN_UV_WARN_LIMIT_DEFAULT);
 209
 210     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_IIN_OC_FAULT_LIMIT);
 211     g_assert_cmphex(i2c_value, ==, ISL_IIN_OC_FAULT_LIMIT_DEFAULT);
 212
 213     i2c_value = i2c_get8(i2cdev, PMBUS_REVISION);
 214     g_assert_cmphex(i2c_value, ==, ISL_REVISION_DEFAULT);
 215 }
 216
 217 /* test qmp access */
 218 static void test_tx_rx(void *obj, void *data, QGuestAllocator *alloc)
 219 {
 220     uint16_t i2c_value, value;
 221     QI2CDevice *i2cdev = (QI2CDevice *)obj;
 222
 223     qmp_isl_pmbus_vr_set(TEST_ID, "vin[0]", 200);
 224     value = qmp_isl_pmbus_vr_get(TEST_ID, "vin[0]");
 225     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_VIN);
 226     g_assert_cmpuint(value, ==, i2c_value);
 227
 228     qmp_isl_pmbus_vr_set(TEST_ID, "vout[0]", 2500);
 229     value = qmp_isl_pmbus_vr_get(TEST_ID, "vout[0]");
 230     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_VOUT);
 231     g_assert_cmpuint(value, ==, i2c_value);
 232
 233     qmp_isl_pmbus_vr_set(TEST_ID, "iin[0]", 300);
 234     value = qmp_isl_pmbus_vr_get(TEST_ID, "iin[0]");
 235     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IIN);
 236     g_assert_cmpuint(value, ==, i2c_value);
 237
 238     qmp_isl_pmbus_vr_set(TEST_ID, "iout[0]", 310);
 239     value = qmp_isl_pmbus_vr_get(TEST_ID, "iout[0]");
 240     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IOUT);
 241     g_assert_cmpuint(value, ==, i2c_value);
 242
 243     qmp_isl_pmbus_vr_set(TEST_ID, "pin[0]", 100);
 244     value = qmp_isl_pmbus_vr_get(TEST_ID, "pin[0]");
 245     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_PIN);
 246     g_assert_cmpuint(value, ==, i2c_value);
 247
 248     qmp_isl_pmbus_vr_set(TEST_ID, "pout[0]", 95);
 249     value = qmp_isl_pmbus_vr_get(TEST_ID, "pout[0]");
 250     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_POUT);
 251     g_assert_cmpuint(value, ==, i2c_value);
 252
 253     qmp_isl_pmbus_vr_set(TEST_ID, "temp1[0]", 26);
 254     value = qmp_isl_pmbus_vr_get(TEST_ID, "temp1[0]");
 255     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_1);
 256     g_assert_cmpuint(value, ==, i2c_value);
 257
 258     qmp_isl_pmbus_vr_set(TEST_ID, "temp2[0]", 27);
 259     value = qmp_isl_pmbus_vr_get(TEST_ID, "temp2[0]");
 260     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_2);
 261     g_assert_cmpuint(value, ==, i2c_value);
 262
 263     qmp_isl_pmbus_vr_set(TEST_ID, "temp3[0]", 28);
 264     value = qmp_isl_pmbus_vr_get(TEST_ID, "temp3[0]");
 265     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_3);
 266     g_assert_cmpuint(value, ==, i2c_value);
 267
 268 }
 269
 270 /* test r/w registers */
 271 static void test_rw_regs(void *obj, void *data, QGuestAllocator *alloc)
 272 {
 273     uint16_t i2c_value;
 274     QI2CDevice *i2cdev = (QI2CDevice *)obj;
 275
 276     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_COMMAND, 0x1234);
 277     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_COMMAND);
 278     g_assert_cmphex(i2c_value, ==, 0x1234);
 279
 280     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_TRIM, 0x4567);
 281     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_TRIM);
 282     g_assert_cmphex(i2c_value, ==, 0x4567);
 283
 284     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_MAX, 0x9876);
 285     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MAX);
 286     g_assert_cmphex(i2c_value, ==, 0x9876);
 287
 288     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_MARGIN_HIGH, 0xABCD);
 289     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MARGIN_HIGH);
 290     g_assert_cmphex(i2c_value, ==, 0xABCD);
 291
 292     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_MARGIN_LOW, 0xA1B2);
 293     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MARGIN_LOW);
 294     g_assert_cmphex(i2c_value, ==, 0xA1B2);
 295
 296     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_TRANSITION_RATE, 0xDEF1);
 297     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_TRANSITION_RATE);
 298     g_assert_cmphex(i2c_value, ==, 0xDEF1);
 299
 300     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_DROOP, 0x5678);
 301     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_DROOP);
 302     g_assert_cmphex(i2c_value, ==, 0x5678);
 303
 304     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_MIN, 0x1234);
 305     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_MIN);
 306     g_assert_cmphex(i2c_value, ==, 0x1234);
 307
 308     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_OV_FAULT_LIMIT, 0x2345);
 309     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_OV_FAULT_LIMIT);
 310     g_assert_cmphex(i2c_value, ==, 0x2345);
 311
 312     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_UV_FAULT_LIMIT, 0xFA12);
 313     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VOUT_UV_FAULT_LIMIT);
 314     g_assert_cmphex(i2c_value, ==, 0xFA12);
 315
 316     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_OT_FAULT_LIMIT, 0xF077);
 317     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_OT_FAULT_LIMIT);
 318     g_assert_cmphex(i2c_value, ==, 0xF077);
 319
 320     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_OT_WARN_LIMIT, 0x7137);
 321     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_OT_WARN_LIMIT);
 322     g_assert_cmphex(i2c_value, ==, 0x7137);
 323
 324     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VIN_OV_FAULT_LIMIT, 0x3456);
 325     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VIN_OV_FAULT_LIMIT);
 326     g_assert_cmphex(i2c_value, ==, 0x3456);
 327
 328     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VIN_UV_FAULT_LIMIT, 0xBADA);
 329     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_VIN_UV_FAULT_LIMIT);
 330     g_assert_cmphex(i2c_value, ==, 0xBADA);
 331
 332     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_IIN_OC_FAULT_LIMIT, 0xB1B0);
 333     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_IIN_OC_FAULT_LIMIT);
 334     g_assert_cmphex(i2c_value, ==, 0xB1B0);
 335
 336     i2c_set8(i2cdev, PMBUS_OPERATION, 0xA);
 337     i2c_value = i2c_get8(i2cdev, PMBUS_OPERATION);
 338     g_assert_cmphex(i2c_value, ==, 0xA);
 339
 340     i2c_set8(i2cdev, PMBUS_ON_OFF_CONFIG, 0x42);
 341     i2c_value = i2c_get8(i2cdev, PMBUS_ON_OFF_CONFIG);
 342     g_assert_cmphex(i2c_value, ==, 0x42);
 343 }
 344
 345 /* test that devices with multiple pages can switch between them */
 346 static void test_pages_rw(void *obj, void *data, QGuestAllocator *alloc)
 347 {
 348     uint16_t i2c_value;
 349     QI2CDevice *i2cdev = (QI2CDevice *)obj;
 350
 351     i2c_set8(i2cdev, PMBUS_PAGE, 1);
 352     i2c_value = i2c_get8(i2cdev, PMBUS_PAGE);
 353     g_assert_cmphex(i2c_value, ==, 1);
 354
 355     i2c_set8(i2cdev, PMBUS_PAGE, 0);
 356     i2c_value = i2c_get8(i2cdev, PMBUS_PAGE);
 357     g_assert_cmphex(i2c_value, ==, 0);
 358 }
 359
 360 /* test read-only registers */
 361 static void test_ro_regs(void *obj, void *data, QGuestAllocator *alloc)
 362 {
 363     uint16_t i2c_init_value, i2c_value;
 364     QI2CDevice *i2cdev = (QI2CDevice *)obj;
 365
 366     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_VIN);
 367     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_VIN, 0xBEEF);
 368     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_VIN);
 369     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 370
 371     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IIN);
 372     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_IIN, 0xB00F);
 373     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IIN);
 374     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 375
 376     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_VOUT);
 377     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_VOUT, 0x1234);
 378     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_VOUT);
 379     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 380
 381     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IOUT);
 382     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_IOUT, 0x6547);
 383     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_IOUT);
 384     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 385
 386     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_1);
 387     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_TEMPERATURE_1, 0x1597);
 388     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_1);
 389     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 390
 391     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_2);
 392     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_TEMPERATURE_2, 0x1897);
 393     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_2);
 394     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 395
 396     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_3);
 397     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_TEMPERATURE_3, 0x1007);
 398     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_3);
 399     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 400
 401     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_PIN);
 402     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_PIN, 0xDEAD);
 403     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_PIN);
 404     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 405
 406     i2c_init_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_POUT);
 407     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_READ_POUT, 0xD00D);
 408     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_READ_POUT);
 409     g_assert_cmphex(i2c_init_value, ==, i2c_value);
 410 }
 411
 412 /* test voltage fault handling */
 413 static void test_voltage_faults(void *obj, void *data, QGuestAllocator *alloc)
 414 {
 415     uint16_t i2c_value;
 416     uint8_t i2c_byte;
 417     QI2CDevice *i2cdev = (QI2CDevice *)obj;
 418
 419     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_OV_WARN_LIMIT, 5000);
 420     qmp_isl_pmbus_vr_set(TEST_ID, "vout[0]", 5100);
 421
 422     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_STATUS_WORD);
 423     i2c_byte = i2c_get8(i2cdev, PMBUS_STATUS_VOUT);
 424     g_assert_true((i2c_value & PB_STATUS_VOUT) != 0);
 425     g_assert_true((i2c_byte & PB_STATUS_VOUT_OV_WARN) != 0);
 426
 427     qmp_isl_pmbus_vr_set(TEST_ID, "vout[0]", 4500);
 428     i2c_set8(i2cdev, PMBUS_CLEAR_FAULTS, 0);
 429     i2c_byte = i2c_get8(i2cdev, PMBUS_STATUS_VOUT);
 430     g_assert_true((i2c_byte & PB_STATUS_VOUT_OV_WARN) == 0);
 431
 432     isl_pmbus_vr_i2c_set16(i2cdev, PMBUS_VOUT_UV_WARN_LIMIT, 4600);
 433
 434     i2c_value = isl_pmbus_vr_i2c_get16(i2cdev, PMBUS_STATUS_WORD);
 435     i2c_byte = i2c_get8(i2cdev, PMBUS_STATUS_VOUT);
 436     g_assert_true((i2c_value & PB_STATUS_VOUT) != 0);
 437     g_assert_true((i2c_byte & PB_STATUS_VOUT_UV_WARN) != 0);
 438
 439 }
 440
 441 static void isl_pmbus_vr_register_nodes(void)
 442 {
 443     QOSGraphEdgeOptions opts = {
 444         .extra_device_opts = "id=" TEST_ID ",address=0x43"
 445     };
 446     add_qi2c_address(&opts, &(QI2CAddress) { TEST_ADDR });
 447
 448     qos_node_create_driver("isl69260", i2c_device_create);
 449     qos_node_consumes("isl69260", "i2c-bus", &opts);
 450
 451     qos_add_test("test_defaults", "isl69260", test_defaults, NULL);
 452     qos_add_test("test_tx_rx", "isl69260", test_tx_rx, NULL);
 453     qos_add_test("test_rw_regs", "isl69260", test_rw_regs, NULL);
 454     qos_add_test("test_pages_rw", "isl69260", test_pages_rw, NULL);
 455     qos_add_test("test_ro_regs", "isl69260", test_ro_regs, NULL);
 456     qos_add_test("test_ov_faults", "isl69260", test_voltage_faults, NULL);
 457
 458     qos_node_create_driver("raa229004", i2c_device_create);
 459     qos_node_consumes("raa229004", "i2c-bus", &opts);
 460
 461     qos_add_test("test_tx_rx", "raa229004", test_tx_rx, NULL);
 462     qos_add_test("test_rw_regs", "raa229004", test_rw_regs, NULL);
 463     qos_add_test("test_pages_rw", "raa229004", test_pages_rw, NULL);
 464     qos_add_test("test_ov_faults", "raa229004", test_voltage_faults, NULL);
 465
 466     qos_node_create_driver("raa228000", i2c_device_create);
 467     qos_node_consumes("raa228000", "i2c-bus", &opts);
 468
 469     qos_add_test("test_defaults", "raa228000", raa228000_test_defaults, NULL);
 470     qos_add_test("test_tx_rx", "raa228000", test_tx_rx, NULL);
 471     qos_add_test("test_rw_regs", "raa228000", test_rw_regs, NULL);
 472     qos_add_test("test_ov_faults", "raa228000", test_voltage_faults, NULL);
 473 }
 474 libqos_init(isl_pmbus_vr_register_nodes);