test/dm/regulator.c

   1 /*
   2  * Tests for the driver model regulator API
   3  *
   4  * Copyright (c) 2015 Samsung Electronics
   5  * Przemyslaw Marczak <p.marczak@samsung.com>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <common.h>
  11 #include <errno.h>
  12 #include <dm.h>
  13 #include <fdtdec.h>
  14 #include <malloc.h>
  15 #include <dm/device-internal.h>
  16 #include <dm/root.h>
  17 #include <dm/util.h>
  18 #include <dm/test.h>
  19 #include <dm/uclass-internal.h>
  20 #include <power/pmic.h>
  21 #include <power/regulator.h>
  22 #include <power/sandbox_pmic.h>
  23 #include <test/ut.h>
  24
  25 DECLARE_GLOBAL_DATA_PTR;
  26
  27 enum {
  28         BUCK1,
  29         BUCK2,
  30         LDO1,
  31         LDO2,
  32         OUTPUT_COUNT,
  33 };
  34
  35 enum {
  36         DEVNAME = 0,
  37         PLATNAME,
  38         OUTPUT_NAME_COUNT,
  39 };
  40
  41 static const char *regulator_names[OUTPUT_COUNT][OUTPUT_NAME_COUNT] = {
  42         /* devname, platname */
  43         { SANDBOX_BUCK1_DEVNAME, SANDBOX_BUCK1_PLATNAME },
  44         { SANDBOX_BUCK2_DEVNAME, SANDBOX_BUCK2_PLATNAME },
  45         { SANDBOX_LDO1_DEVNAME, SANDBOX_LDO1_PLATNAME},
  46         { SANDBOX_LDO2_DEVNAME, SANDBOX_LDO2_PLATNAME},
  47 };
  48
  49 /* Test regulator get method */
  50 static int dm_test_power_regulator_get(struct unit_test_state *uts)
  51 {
  52         struct dm_regulator_uclass_platdata *uc_pdata;
  53         struct udevice *dev_by_devname;
  54         struct udevice *dev_by_platname;
  55         const char *devname;
  56         const char *platname;
  57         int i;
  58
  59         for (i = 0; i < OUTPUT_COUNT; i++) {
  60                 /*
  61                  * Do the test for each regulator's devname and platname,
  62                  * which are related to a single device.
  63                  */
  64                 devname = regulator_names[i][DEVNAME];
  65                 platname = regulator_names[i][PLATNAME];
  66
  67                 /*
  68                  * Check, that regulator_get_by_devname() function, returns
  69                  * a device with the name equal to the requested one.
  70                  */
  71                 ut_assertok(regulator_get_by_devname(devname, &dev_by_devname));
  72                 ut_asserteq_str(devname, dev_by_devname->name);
  73
  74                 /*
  75                  * Check, that regulator_get_by_platname() function, returns
  76                  * a device with the name equal to the requested one.
  77                  */
  78                 ut_assertok(regulator_get_by_platname(platname, &dev_by_platname));
  79                 uc_pdata = dev_get_uclass_platdata(dev_by_platname);
  80                 ut_assert(uc_pdata);
  81                 ut_asserteq_str(platname, uc_pdata->name);
  82
  83                 /*
  84                  * Check, that the pointers returned by both get functions,
  85                  * points to the same regulator device.
  86                  */
  87                 ut_asserteq_ptr(dev_by_devname, dev_by_platname);
  88         }
  89
  90         return 0;
  91 }
  92 DM_TEST(dm_test_power_regulator_get, DM_TESTF_SCAN_FDT);
  93
  94 /* Test regulator set and get Voltage method */
  95 static int dm_test_power_regulator_set_get_voltage(struct unit_test_state *uts)
  96 {
  97         struct dm_regulator_uclass_platdata *uc_pdata;
  98         struct udevice *dev;
  99         const char *platname;
 100         int val_set, val_get;
 101
 102         /* Set and get Voltage of BUCK1 - set to 'min' constraint */
 103         platname = regulator_names[BUCK1][PLATNAME];
 104         ut_assertok(regulator_get_by_platname(platname, &dev));
 105
 106         uc_pdata = dev_get_uclass_platdata(dev);
 107         ut_assert(uc_pdata);
 108
 109         val_set = uc_pdata->min_uV;
 110         ut_assertok(regulator_set_value(dev, val_set));
 111
 112         val_get = regulator_get_value(dev);
 113         ut_assert(val_get >= 0);
 114
 115         ut_asserteq(val_set, val_get);
 116
 117         return 0;
 118 }
 119 DM_TEST(dm_test_power_regulator_set_get_voltage, DM_TESTF_SCAN_FDT);
 120
 121 /* Test regulator set and get Current method */
 122 static int dm_test_power_regulator_set_get_current(struct unit_test_state *uts)
 123 {
 124         struct dm_regulator_uclass_platdata *uc_pdata;
 125         struct udevice *dev;
 126         const char *platname;
 127         int val_set, val_get;
 128
 129         /* Set and get the Current of LDO1 - set to 'min' constraint */
 130         platname = regulator_names[LDO1][PLATNAME];
 131         ut_assertok(regulator_get_by_platname(platname, &dev));
 132
 133         uc_pdata = dev_get_uclass_platdata(dev);
 134         ut_assert(uc_pdata);
 135
 136         val_set = uc_pdata->min_uA;
 137         ut_assertok(regulator_set_current(dev, val_set));
 138
 139         val_get = regulator_get_current(dev);
 140         ut_assert(val_get >= 0);
 141
 142         ut_asserteq(val_set, val_get);
 143
 144         /* Check LDO2 current limit constraints - should be -ENODATA */
 145         platname = regulator_names[LDO2][PLATNAME];
 146         ut_assertok(regulator_get_by_platname(platname, &dev));
 147
 148         uc_pdata = dev_get_uclass_platdata(dev);
 149         ut_assert(uc_pdata);
 150         ut_asserteq(-ENODATA, uc_pdata->min_uA);
 151         ut_asserteq(-ENODATA, uc_pdata->max_uA);
 152
 153         /* Try set the Current of LDO2 - should return -ENOSYS */
 154         ut_asserteq(-ENOSYS, regulator_set_current(dev, 0));
 155
 156         return 0;
 157 }
 158 DM_TEST(dm_test_power_regulator_set_get_current, DM_TESTF_SCAN_FDT);
 159
 160 /* Test regulator set and get Enable method */
 161 static int dm_test_power_regulator_set_get_enable(struct unit_test_state *uts)
 162 {
 163         const char *platname;
 164         struct udevice *dev;
 165         bool val_set = true;
 166
 167         /* Set the Enable of LDO1 - default is disabled */
 168         platname = regulator_names[LDO1][PLATNAME];
 169         ut_assertok(regulator_get_by_platname(platname, &dev));
 170         ut_assertok(regulator_set_enable(dev, val_set));
 171
 172         /* Get the Enable state of LDO1 and compare it with the requested one */
 173         ut_asserteq(regulator_get_enable(dev), val_set);
 174
 175         return 0;
 176 }
 177 DM_TEST(dm_test_power_regulator_set_get_enable, DM_TESTF_SCAN_FDT);
 178
 179 /* Test regulator set and get mode method */
 180 static int dm_test_power_regulator_set_get_mode(struct unit_test_state *uts)
 181 {
 182         const char *platname;
 183         struct udevice *dev;
 184         int val_set = LDO_OM_SLEEP;
 185
 186         /* Set the mode id to LDO_OM_SLEEP of LDO1 - default is LDO_OM_OFF */
 187         platname = regulator_names[LDO1][PLATNAME];
 188         ut_assertok(regulator_get_by_platname(platname, &dev));
 189         ut_assertok(regulator_set_mode(dev, val_set));
 190
 191         /* Get the mode id of LDO1 and compare it with the requested one */
 192         ut_asserteq(regulator_get_mode(dev), val_set);
 193
 194         return 0;
 195 }
 196 DM_TEST(dm_test_power_regulator_set_get_mode, DM_TESTF_SCAN_FDT);
 197
 198 /* Test regulator autoset method */
 199 static int dm_test_power_regulator_autoset(struct unit_test_state *uts)
 200 {
 201         const char *platname;
 202         struct udevice *dev, *dev_autoset;
 203
 204         /*
 205          * Test the BUCK1 with fdt properties
 206          * - min-microvolt = max-microvolt = 1200000
 207          * - min-microamp = max-microamp = 200000
 208          * - always-on = set
 209          * - boot-on = not set
 210          * Expected output state: uV=1200000; uA=200000; output enabled
 211          */
 212         platname = regulator_names[BUCK1][PLATNAME];
 213         ut_assertok(regulator_autoset_by_name(platname, &dev_autoset));
 214
 215         /* Check, that the returned device is proper */
 216         ut_assertok(regulator_get_by_platname(platname, &dev));
 217         ut_asserteq_ptr(dev, dev_autoset);
 218
 219         /* Check the setup after autoset */
 220         ut_asserteq(regulator_get_value(dev),
 221                     SANDBOX_BUCK1_AUTOSET_EXPECTED_UV);
 222         ut_asserteq(regulator_get_current(dev),
 223                     SANDBOX_BUCK1_AUTOSET_EXPECTED_UA);
 224         ut_asserteq(regulator_get_enable(dev),
 225                     SANDBOX_BUCK1_AUTOSET_EXPECTED_ENABLE);
 226
 227         return 0;
 228 }
 229 DM_TEST(dm_test_power_regulator_autoset, DM_TESTF_SCAN_FDT);
 230
 231 /*
 232  * Struct setting: to keep the expected output settings.
 233  * @voltage: Voltage value [uV]
 234  * @current: Current value [uA]
 235  * @enable: output enable state: true/false
 236  */
 237 struct setting {
 238         int voltage;
 239         int current;
 240         bool enable;
 241 };
 242
 243 /*
 244  * platname_list: an array of regulator platform names.
 245  * For testing regulator_list_autoset() for outputs:
 246  * - LDO1
 247  * - LDO2
 248  */
 249 static const char *platname_list[] = {
 250         SANDBOX_LDO1_PLATNAME,
 251         SANDBOX_LDO2_PLATNAME,
 252         NULL,
 253 };
 254
 255 /*
 256  * expected_setting_list: an array of regulator output setting, expected after
 257  * call of the regulator_list_autoset() for the "platname_list" array.
 258  * For testing results of regulator_list_autoset() for outputs:
 259  * - LDO1
 260  * - LDO2
 261  * The settings are defined in: include/power/sandbox_pmic.h
 262  */
 263 static const struct setting expected_setting_list[] = {
 264         [0] = { /* LDO1 */
 265         .voltage = SANDBOX_LDO1_AUTOSET_EXPECTED_UV,
 266         .current = SANDBOX_LDO1_AUTOSET_EXPECTED_UA,
 267         .enable  = SANDBOX_LDO1_AUTOSET_EXPECTED_ENABLE,
 268         },
 269         [1] = { /* LDO2 */
 270         .voltage = SANDBOX_LDO2_AUTOSET_EXPECTED_UV,
 271         .current = SANDBOX_LDO2_AUTOSET_EXPECTED_UA,
 272         .enable  = SANDBOX_LDO2_AUTOSET_EXPECTED_ENABLE,
 273         },
 274 };
 275
 276 static int list_count = ARRAY_SIZE(expected_setting_list);
 277
 278 /* Test regulator list autoset method */
 279 static int dm_test_power_regulator_autoset_list(struct unit_test_state *uts)
 280 {
 281         struct udevice *dev_list[2], *dev;
 282         int i;
 283
 284         /*
 285          * Test the settings of the regulator list:
 286          * LDO1 with fdt properties:
 287          * - min-microvolt = max-microvolt = 1800000
 288          * - min-microamp = max-microamp = 100000
 289          * - always-on = not set
 290          * - boot-on = set
 291          * Expected output state: uV=1800000; uA=100000; output enabled
 292          *
 293          * LDO2 with fdt properties:
 294          * - min-microvolt = max-microvolt = 3300000
 295          * - always-on = not set
 296          * - boot-on = not set
 297          * Expected output state: uV=300000(default); output disabled(default)
 298          * The expected settings are defined in: include/power/sandbox_pmic.h.
 299          */
 300         ut_assertok(regulator_list_autoset(platname_list, dev_list, false));
 301
 302         for (i = 0; i < list_count; i++) {
 303                 /* Check, that the returned device is non-NULL */
 304                 ut_assert(dev_list[i]);
 305
 306                 /* Check, that the returned device is proper */
 307                 ut_assertok(regulator_get_by_platname(platname_list[i], &dev));
 308                 ut_asserteq_ptr(dev_list[i], dev);
 309
 310                 /* Check, that regulator output Voltage value is as expected */
 311                 ut_asserteq(regulator_get_value(dev_list[i]),
 312                             expected_setting_list[i].voltage);
 313
 314                 /* Check, that regulator output Current value is as expected */
 315                 ut_asserteq(regulator_get_current(dev_list[i]),
 316                             expected_setting_list[i].current);
 317
 318                 /* Check, that regulator output Enable state is as expected */
 319                 ut_asserteq(regulator_get_enable(dev_list[i]),
 320                             expected_setting_list[i].enable);
 321         }
 322
 323         return 0;
 324 }
 325 DM_TEST(dm_test_power_regulator_autoset_list, DM_TESTF_SCAN_FDT);