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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>
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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>
e721b882 23#include <test/ut.h>
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24
25DECLARE_GLOBAL_DATA_PTR;
26
27enum {
28 BUCK1,
29 BUCK2,
bf802f5d 30 BUCK3,
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31 LDO1,
32 LDO2,
33 OUTPUT_COUNT,
34};
35
36enum {
37 DEVNAME = 0,
38 PLATNAME,
39 OUTPUT_NAME_COUNT,
40};
41
42static const char *regulator_names[OUTPUT_COUNT][OUTPUT_NAME_COUNT] = {
43 /* devname, platname */
44 { SANDBOX_BUCK1_DEVNAME, SANDBOX_BUCK1_PLATNAME },
45 { SANDBOX_BUCK2_DEVNAME, SANDBOX_BUCK2_PLATNAME },
bf802f5d 46 { SANDBOX_BUCK3_DEVNAME, SANDBOX_BUCK3_PLATNAME },
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47 { SANDBOX_LDO1_DEVNAME, SANDBOX_LDO1_PLATNAME},
48 { SANDBOX_LDO2_DEVNAME, SANDBOX_LDO2_PLATNAME},
49};
50
51/* Test regulator get method */
e721b882 52static int dm_test_power_regulator_get(struct unit_test_state *uts)
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53{
54 struct dm_regulator_uclass_platdata *uc_pdata;
55 struct udevice *dev_by_devname;
56 struct udevice *dev_by_platname;
57 const char *devname;
58 const char *platname;
59 int i;
60
61 for (i = 0; i < OUTPUT_COUNT; i++) {
62 /*
63 * Do the test for each regulator's devname and platname,
64 * which are related to a single device.
65 */
66 devname = regulator_names[i][DEVNAME];
67 platname = regulator_names[i][PLATNAME];
68
69 /*
70 * Check, that regulator_get_by_devname() function, returns
71 * a device with the name equal to the requested one.
72 */
73 ut_assertok(regulator_get_by_devname(devname, &dev_by_devname));
74 ut_asserteq_str(devname, dev_by_devname->name);
75
76 /*
77 * Check, that regulator_get_by_platname() function, returns
78 * a device with the name equal to the requested one.
79 */
80 ut_assertok(regulator_get_by_platname(platname, &dev_by_platname));
81 uc_pdata = dev_get_uclass_platdata(dev_by_platname);
82 ut_assert(uc_pdata);
83 ut_asserteq_str(platname, uc_pdata->name);
84
85 /*
86 * Check, that the pointers returned by both get functions,
87 * points to the same regulator device.
88 */
89 ut_asserteq_ptr(dev_by_devname, dev_by_platname);
90 }
91
92 return 0;
93}
94DM_TEST(dm_test_power_regulator_get, DM_TESTF_SCAN_FDT);
95
96/* Test regulator set and get Voltage method */
e721b882 97static int dm_test_power_regulator_set_get_voltage(struct unit_test_state *uts)
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98{
99 struct dm_regulator_uclass_platdata *uc_pdata;
100 struct udevice *dev;
101 const char *platname;
102 int val_set, val_get;
103
104 /* Set and get Voltage of BUCK1 - set to 'min' constraint */
105 platname = regulator_names[BUCK1][PLATNAME];
106 ut_assertok(regulator_get_by_platname(platname, &dev));
107
108 uc_pdata = dev_get_uclass_platdata(dev);
109 ut_assert(uc_pdata);
110
111 val_set = uc_pdata->min_uV;
112 ut_assertok(regulator_set_value(dev, val_set));
113
114 val_get = regulator_get_value(dev);
115 ut_assert(val_get >= 0);
116
117 ut_asserteq(val_set, val_get);
118
119 return 0;
120}
121DM_TEST(dm_test_power_regulator_set_get_voltage, DM_TESTF_SCAN_FDT);
122
123/* Test regulator set and get Current method */
e721b882 124static int dm_test_power_regulator_set_get_current(struct unit_test_state *uts)
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125{
126 struct dm_regulator_uclass_platdata *uc_pdata;
127 struct udevice *dev;
128 const char *platname;
129 int val_set, val_get;
130
131 /* Set and get the Current of LDO1 - set to 'min' constraint */
132 platname = regulator_names[LDO1][PLATNAME];
133 ut_assertok(regulator_get_by_platname(platname, &dev));
134
135 uc_pdata = dev_get_uclass_platdata(dev);
136 ut_assert(uc_pdata);
137
138 val_set = uc_pdata->min_uA;
139 ut_assertok(regulator_set_current(dev, val_set));
140
141 val_get = regulator_get_current(dev);
142 ut_assert(val_get >= 0);
143
144 ut_asserteq(val_set, val_get);
145
146 /* Check LDO2 current limit constraints - should be -ENODATA */
147 platname = regulator_names[LDO2][PLATNAME];
148 ut_assertok(regulator_get_by_platname(platname, &dev));
149
150 uc_pdata = dev_get_uclass_platdata(dev);
151 ut_assert(uc_pdata);
152 ut_asserteq(-ENODATA, uc_pdata->min_uA);
153 ut_asserteq(-ENODATA, uc_pdata->max_uA);
154
155 /* Try set the Current of LDO2 - should return -ENOSYS */
156 ut_asserteq(-ENOSYS, regulator_set_current(dev, 0));
157
158 return 0;
159}
160DM_TEST(dm_test_power_regulator_set_get_current, DM_TESTF_SCAN_FDT);
161
162/* Test regulator set and get Enable method */
e721b882 163static int dm_test_power_regulator_set_get_enable(struct unit_test_state *uts)
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164{
165 const char *platname;
166 struct udevice *dev;
167 bool val_set = true;
168
169 /* Set the Enable of LDO1 - default is disabled */
170 platname = regulator_names[LDO1][PLATNAME];
171 ut_assertok(regulator_get_by_platname(platname, &dev));
172 ut_assertok(regulator_set_enable(dev, val_set));
173
174 /* Get the Enable state of LDO1 and compare it with the requested one */
175 ut_asserteq(regulator_get_enable(dev), val_set);
176
177 return 0;
178}
179DM_TEST(dm_test_power_regulator_set_get_enable, DM_TESTF_SCAN_FDT);
180
181/* Test regulator set and get mode method */
e721b882 182static int dm_test_power_regulator_set_get_mode(struct unit_test_state *uts)
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183{
184 const char *platname;
185 struct udevice *dev;
186 int val_set = LDO_OM_SLEEP;
187
188 /* Set the mode id to LDO_OM_SLEEP of LDO1 - default is LDO_OM_OFF */
189 platname = regulator_names[LDO1][PLATNAME];
190 ut_assertok(regulator_get_by_platname(platname, &dev));
191 ut_assertok(regulator_set_mode(dev, val_set));
192
193 /* Get the mode id of LDO1 and compare it with the requested one */
194 ut_asserteq(regulator_get_mode(dev), val_set);
195
196 return 0;
197}
198DM_TEST(dm_test_power_regulator_set_get_mode, DM_TESTF_SCAN_FDT);
199
200/* Test regulator autoset method */
e721b882 201static int dm_test_power_regulator_autoset(struct unit_test_state *uts)
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202{
203 const char *platname;
204 struct udevice *dev, *dev_autoset;
205
206 /*
207 * Test the BUCK1 with fdt properties
208 * - min-microvolt = max-microvolt = 1200000
209 * - min-microamp = max-microamp = 200000
210 * - always-on = set
211 * - boot-on = not set
212 * Expected output state: uV=1200000; uA=200000; output enabled
213 */
214 platname = regulator_names[BUCK1][PLATNAME];
3b55d30f 215 ut_assertok(regulator_autoset_by_name(platname, &dev_autoset));
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216
217 /* Check, that the returned device is proper */
218 ut_assertok(regulator_get_by_platname(platname, &dev));
219 ut_asserteq_ptr(dev, dev_autoset);
220
221 /* Check the setup after autoset */
222 ut_asserteq(regulator_get_value(dev),
223 SANDBOX_BUCK1_AUTOSET_EXPECTED_UV);
224 ut_asserteq(regulator_get_current(dev),
225 SANDBOX_BUCK1_AUTOSET_EXPECTED_UA);
226 ut_asserteq(regulator_get_enable(dev),
227 SANDBOX_BUCK1_AUTOSET_EXPECTED_ENABLE);
228
229 return 0;
230}
231DM_TEST(dm_test_power_regulator_autoset, DM_TESTF_SCAN_FDT);
232
233/*
234 * Struct setting: to keep the expected output settings.
235 * @voltage: Voltage value [uV]
236 * @current: Current value [uA]
237 * @enable: output enable state: true/false
238 */
239struct setting {
240 int voltage;
241 int current;
242 bool enable;
243};
244
245/*
246 * platname_list: an array of regulator platform names.
247 * For testing regulator_list_autoset() for outputs:
248 * - LDO1
249 * - LDO2
250 */
251static const char *platname_list[] = {
252 SANDBOX_LDO1_PLATNAME,
253 SANDBOX_LDO2_PLATNAME,
254 NULL,
255};
256
257/*
258 * expected_setting_list: an array of regulator output setting, expected after
259 * call of the regulator_list_autoset() for the "platname_list" array.
260 * For testing results of regulator_list_autoset() for outputs:
261 * - LDO1
262 * - LDO2
263 * The settings are defined in: include/power/sandbox_pmic.h
264 */
265static const struct setting expected_setting_list[] = {
266 [0] = { /* LDO1 */
267 .voltage = SANDBOX_LDO1_AUTOSET_EXPECTED_UV,
268 .current = SANDBOX_LDO1_AUTOSET_EXPECTED_UA,
269 .enable = SANDBOX_LDO1_AUTOSET_EXPECTED_ENABLE,
270 },
271 [1] = { /* LDO2 */
272 .voltage = SANDBOX_LDO2_AUTOSET_EXPECTED_UV,
273 .current = SANDBOX_LDO2_AUTOSET_EXPECTED_UA,
274 .enable = SANDBOX_LDO2_AUTOSET_EXPECTED_ENABLE,
275 },
276};
277
278static int list_count = ARRAY_SIZE(expected_setting_list);
279
280/* Test regulator list autoset method */
e721b882 281static int dm_test_power_regulator_autoset_list(struct unit_test_state *uts)
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282{
283 struct udevice *dev_list[2], *dev;
284 int i;
285
286 /*
287 * Test the settings of the regulator list:
288 * LDO1 with fdt properties:
289 * - min-microvolt = max-microvolt = 1800000
290 * - min-microamp = max-microamp = 100000
291 * - always-on = not set
292 * - boot-on = set
293 * Expected output state: uV=1800000; uA=100000; output enabled
294 *
295 * LDO2 with fdt properties:
296 * - min-microvolt = max-microvolt = 3300000
297 * - always-on = not set
298 * - boot-on = not set
299 * Expected output state: uV=300000(default); output disabled(default)
300 * The expected settings are defined in: include/power/sandbox_pmic.h.
301 */
302 ut_assertok(regulator_list_autoset(platname_list, dev_list, false));
303
304 for (i = 0; i < list_count; i++) {
305 /* Check, that the returned device is non-NULL */
306 ut_assert(dev_list[i]);
307
308 /* Check, that the returned device is proper */
309 ut_assertok(regulator_get_by_platname(platname_list[i], &dev));
310 ut_asserteq_ptr(dev_list[i], dev);
311
312 /* Check, that regulator output Voltage value is as expected */
313 ut_asserteq(regulator_get_value(dev_list[i]),
314 expected_setting_list[i].voltage);
315
316 /* Check, that regulator output Current value is as expected */
317 ut_asserteq(regulator_get_current(dev_list[i]),
318 expected_setting_list[i].current);
319
320 /* Check, that regulator output Enable state is as expected */
321 ut_asserteq(regulator_get_enable(dev_list[i]),
322 expected_setting_list[i].enable);
323 }
324
325 return 0;
326}
327DM_TEST(dm_test_power_regulator_autoset_list, DM_TESTF_SCAN_FDT);