xref: /openbmc/u-boot/test/dm/regulator.c (revision e35171e9)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Tests for the driver model regulator API
4  *
5  * Copyright (c) 2015 Samsung Electronics
6  * Przemyslaw Marczak <p.marczak@samsung.com>
7  */
8 
9 #include <common.h>
10 #include <errno.h>
11 #include <dm.h>
12 #include <fdtdec.h>
13 #include <malloc.h>
14 #include <dm/device-internal.h>
15 #include <dm/root.h>
16 #include <dm/util.h>
17 #include <dm/test.h>
18 #include <dm/uclass-internal.h>
19 #include <power/pmic.h>
20 #include <power/regulator.h>
21 #include <power/sandbox_pmic.h>
22 #include <test/ut.h>
23 
24 enum {
25 	BUCK1,
26 	BUCK2,
27 	BUCK3,
28 	LDO1,
29 	LDO2,
30 	OUTPUT_COUNT,
31 };
32 
33 enum {
34 	DEVNAME = 0,
35 	PLATNAME,
36 	OUTPUT_NAME_COUNT,
37 };
38 
39 static const char *regulator_names[OUTPUT_COUNT][OUTPUT_NAME_COUNT] = {
40 	/* devname, platname */
41 	{ SANDBOX_BUCK1_DEVNAME, SANDBOX_BUCK1_PLATNAME },
42 	{ SANDBOX_BUCK2_DEVNAME, SANDBOX_BUCK2_PLATNAME },
43 	{ SANDBOX_BUCK3_DEVNAME, SANDBOX_BUCK3_PLATNAME },
44 	{ SANDBOX_LDO1_DEVNAME, SANDBOX_LDO1_PLATNAME},
45 	{ SANDBOX_LDO2_DEVNAME, SANDBOX_LDO2_PLATNAME},
46 };
47 
48 /* Test regulator get method */
dm_test_power_regulator_get(struct unit_test_state * uts)49 static int dm_test_power_regulator_get(struct unit_test_state *uts)
50 {
51 	struct dm_regulator_uclass_platdata *uc_pdata;
52 	struct udevice *dev_by_devname;
53 	struct udevice *dev_by_platname;
54 	const char *devname;
55 	const char *platname;
56 	int i;
57 
58 	for (i = 0; i < OUTPUT_COUNT; i++) {
59 		/*
60 		 * Do the test for each regulator's devname and platname,
61 		 * which are related to a single device.
62 		 */
63 		devname = regulator_names[i][DEVNAME];
64 		platname = regulator_names[i][PLATNAME];
65 
66 		/*
67 		 * Check, that regulator_get_by_devname() function, returns
68 		 * a device with the name equal to the requested one.
69 		 */
70 		ut_assertok(regulator_get_by_devname(devname, &dev_by_devname));
71 		ut_asserteq_str(devname, dev_by_devname->name);
72 
73 		/*
74 		 * Check, that regulator_get_by_platname() function, returns
75 		 * a device with the name equal to the requested one.
76 		 */
77 		ut_assertok(regulator_get_by_platname(platname, &dev_by_platname));
78 		uc_pdata = dev_get_uclass_platdata(dev_by_platname);
79 		ut_assert(uc_pdata);
80 		ut_asserteq_str(platname, uc_pdata->name);
81 
82 		/*
83 		 * Check, that the pointers returned by both get functions,
84 		 * points to the same regulator device.
85 		 */
86 		ut_asserteq_ptr(dev_by_devname, dev_by_platname);
87 	}
88 
89 	return 0;
90 }
91 DM_TEST(dm_test_power_regulator_get, DM_TESTF_SCAN_FDT);
92 
93 /* Test regulator set and get Voltage method */
dm_test_power_regulator_set_get_voltage(struct unit_test_state * uts)94 static int dm_test_power_regulator_set_get_voltage(struct unit_test_state *uts)
95 {
96 	struct dm_regulator_uclass_platdata *uc_pdata;
97 	struct udevice *dev;
98 	const char *platname;
99 	int val_set, val_get;
100 
101 	/* Set and get Voltage of BUCK1 - set to 'min' constraint */
102 	platname = regulator_names[BUCK1][PLATNAME];
103 	ut_assertok(regulator_get_by_platname(platname, &dev));
104 
105 	uc_pdata = dev_get_uclass_platdata(dev);
106 	ut_assert(uc_pdata);
107 
108 	val_set = uc_pdata->min_uV;
109 	ut_assertok(regulator_set_value(dev, val_set));
110 
111 	val_get = regulator_get_value(dev);
112 	ut_assert(val_get >= 0);
113 
114 	ut_asserteq(val_set, val_get);
115 
116 	return 0;
117 }
118 DM_TEST(dm_test_power_regulator_set_get_voltage, DM_TESTF_SCAN_FDT);
119 
120 /* Test regulator set and get Current method */
dm_test_power_regulator_set_get_current(struct unit_test_state * uts)121 static int dm_test_power_regulator_set_get_current(struct unit_test_state *uts)
122 {
123 	struct dm_regulator_uclass_platdata *uc_pdata;
124 	struct udevice *dev;
125 	const char *platname;
126 	int val_set, val_get;
127 
128 	/* Set and get the Current of LDO1 - set to 'min' constraint */
129 	platname = regulator_names[LDO1][PLATNAME];
130 	ut_assertok(regulator_get_by_platname(platname, &dev));
131 
132 	uc_pdata = dev_get_uclass_platdata(dev);
133 	ut_assert(uc_pdata);
134 
135 	val_set = uc_pdata->min_uA;
136 	ut_assertok(regulator_set_current(dev, val_set));
137 
138 	val_get = regulator_get_current(dev);
139 	ut_assert(val_get >= 0);
140 
141 	ut_asserteq(val_set, val_get);
142 
143 	/* Check LDO2 current limit constraints - should be -ENODATA */
144 	platname = regulator_names[LDO2][PLATNAME];
145 	ut_assertok(regulator_get_by_platname(platname, &dev));
146 
147 	uc_pdata = dev_get_uclass_platdata(dev);
148 	ut_assert(uc_pdata);
149 	ut_asserteq(-ENODATA, uc_pdata->min_uA);
150 	ut_asserteq(-ENODATA, uc_pdata->max_uA);
151 
152 	/* Try set the Current of LDO2 - should return -ENOSYS */
153 	ut_asserteq(-ENOSYS, regulator_set_current(dev, 0));
154 
155 	return 0;
156 }
157 DM_TEST(dm_test_power_regulator_set_get_current, DM_TESTF_SCAN_FDT);
158 
159 /* Test regulator set and get Enable method */
dm_test_power_regulator_set_get_enable(struct unit_test_state * uts)160 static int dm_test_power_regulator_set_get_enable(struct unit_test_state *uts)
161 {
162 	const char *platname;
163 	struct udevice *dev;
164 	bool val_set = true;
165 
166 	/* Set the Enable of LDO1 - default is disabled */
167 	platname = regulator_names[LDO1][PLATNAME];
168 	ut_assertok(regulator_get_by_platname(platname, &dev));
169 	ut_assertok(regulator_set_enable(dev, val_set));
170 
171 	/* Get the Enable state of LDO1 and compare it with the requested one */
172 	ut_asserteq(regulator_get_enable(dev), val_set);
173 
174 	return 0;
175 }
176 DM_TEST(dm_test_power_regulator_set_get_enable, DM_TESTF_SCAN_FDT);
177 
178 /* Test regulator set and get enable if allowed method */
179 static
dm_test_power_regulator_set_enable_if_allowed(struct unit_test_state * uts)180 int dm_test_power_regulator_set_enable_if_allowed(struct unit_test_state *uts)
181 {
182 	const char *platname;
183 	struct udevice *dev, *dev_autoset;
184 	bool val_set = false;
185 
186 	/* Get BUCK1 - always on regulator */
187 	platname = regulator_names[BUCK1][PLATNAME];
188 	ut_assertok(regulator_autoset_by_name(platname, &dev_autoset));
189 	ut_assertok(regulator_get_by_platname(platname, &dev));
190 
191 	/* Try disabling always-on regulator */
192 	ut_assertok(regulator_set_enable_if_allowed(dev, val_set));
193 	ut_asserteq(regulator_get_enable(dev), !val_set);
194 
195 	return 0;
196 }
197 DM_TEST(dm_test_power_regulator_set_enable_if_allowed, DM_TESTF_SCAN_FDT);
198 
199 /* Test regulator set and get mode method */
dm_test_power_regulator_set_get_mode(struct unit_test_state * uts)200 static int dm_test_power_regulator_set_get_mode(struct unit_test_state *uts)
201 {
202 	const char *platname;
203 	struct udevice *dev;
204 	int val_set = LDO_OM_SLEEP;
205 
206 	/* Set the mode id to LDO_OM_SLEEP of LDO1 - default is LDO_OM_OFF */
207 	platname = regulator_names[LDO1][PLATNAME];
208 	ut_assertok(regulator_get_by_platname(platname, &dev));
209 	ut_assertok(regulator_set_mode(dev, val_set));
210 
211 	/* Get the mode id of LDO1 and compare it with the requested one */
212 	ut_asserteq(regulator_get_mode(dev), val_set);
213 
214 	return 0;
215 }
216 DM_TEST(dm_test_power_regulator_set_get_mode, DM_TESTF_SCAN_FDT);
217 
218 /* Test regulator autoset method */
dm_test_power_regulator_autoset(struct unit_test_state * uts)219 static int dm_test_power_regulator_autoset(struct unit_test_state *uts)
220 {
221 	const char *platname;
222 	struct udevice *dev, *dev_autoset;
223 
224 	/*
225 	 * Test the BUCK1 with fdt properties
226 	 * - min-microvolt = max-microvolt = 1200000
227 	 * - min-microamp = max-microamp = 200000
228 	 * - always-on = set
229 	 * - boot-on = not set
230 	 * Expected output state: uV=1200000; uA=200000; output enabled
231 	 */
232 	platname = regulator_names[BUCK1][PLATNAME];
233 	ut_assertok(regulator_autoset_by_name(platname, &dev_autoset));
234 
235 	/* Check, that the returned device is proper */
236 	ut_assertok(regulator_get_by_platname(platname, &dev));
237 	ut_asserteq_ptr(dev, dev_autoset);
238 
239 	/* Check the setup after autoset */
240 	ut_asserteq(regulator_get_value(dev),
241 		    SANDBOX_BUCK1_AUTOSET_EXPECTED_UV);
242 	ut_asserteq(regulator_get_current(dev),
243 		    SANDBOX_BUCK1_AUTOSET_EXPECTED_UA);
244 	ut_asserteq(regulator_get_enable(dev),
245 		    SANDBOX_BUCK1_AUTOSET_EXPECTED_ENABLE);
246 
247 	return 0;
248 }
249 DM_TEST(dm_test_power_regulator_autoset, DM_TESTF_SCAN_FDT);
250 
251 /*
252  * Struct setting: to keep the expected output settings.
253  * @voltage: Voltage value [uV]
254  * @current: Current value [uA]
255  * @enable: output enable state: true/false
256  */
257 struct setting {
258 	int voltage;
259 	int current;
260 	bool enable;
261 };
262 
263 /*
264  * platname_list: an array of regulator platform names.
265  * For testing regulator_list_autoset() for outputs:
266  * - LDO1
267  * - LDO2
268  */
269 static const char *platname_list[] = {
270 	SANDBOX_LDO1_PLATNAME,
271 	SANDBOX_LDO2_PLATNAME,
272 	NULL,
273 };
274 
275 /*
276  * expected_setting_list: an array of regulator output setting, expected after
277  * call of the regulator_list_autoset() for the "platname_list" array.
278  * For testing results of regulator_list_autoset() for outputs:
279  * - LDO1
280  * - LDO2
281  * The settings are defined in: include/power/sandbox_pmic.h
282  */
283 static const struct setting expected_setting_list[] = {
284 	[0] = { /* LDO1 */
285 	.voltage = SANDBOX_LDO1_AUTOSET_EXPECTED_UV,
286 	.current = SANDBOX_LDO1_AUTOSET_EXPECTED_UA,
287 	.enable  = SANDBOX_LDO1_AUTOSET_EXPECTED_ENABLE,
288 	},
289 	[1] = { /* LDO2 */
290 	.voltage = SANDBOX_LDO2_AUTOSET_EXPECTED_UV,
291 	.current = SANDBOX_LDO2_AUTOSET_EXPECTED_UA,
292 	.enable  = SANDBOX_LDO2_AUTOSET_EXPECTED_ENABLE,
293 	},
294 };
295 
296 static int list_count = ARRAY_SIZE(expected_setting_list);
297 
298 /* Test regulator list autoset method */
dm_test_power_regulator_autoset_list(struct unit_test_state * uts)299 static int dm_test_power_regulator_autoset_list(struct unit_test_state *uts)
300 {
301 	struct udevice *dev_list[2], *dev;
302 	int i;
303 
304 	/*
305 	 * Test the settings of the regulator list:
306 	 * LDO1 with fdt properties:
307 	 * - min-microvolt = max-microvolt = 1800000
308 	 * - min-microamp = max-microamp = 100000
309 	 * - always-on = not set
310 	 * - boot-on = set
311 	 * Expected output state: uV=1800000; uA=100000; output enabled
312 	 *
313 	 * LDO2 with fdt properties:
314 	 * - min-microvolt = max-microvolt = 3300000
315 	 * - always-on = not set
316 	 * - boot-on = not set
317 	 * Expected output state: uV=300000(default); output disabled(default)
318 	 * The expected settings are defined in: include/power/sandbox_pmic.h.
319 	 */
320 	ut_assertok(regulator_list_autoset(platname_list, dev_list, false));
321 
322 	for (i = 0; i < list_count; i++) {
323 		/* Check, that the returned device is non-NULL */
324 		ut_assert(dev_list[i]);
325 
326 		/* Check, that the returned device is proper */
327 		ut_assertok(regulator_get_by_platname(platname_list[i], &dev));
328 		ut_asserteq_ptr(dev_list[i], dev);
329 
330 		/* Check, that regulator output Voltage value is as expected */
331 		ut_asserteq(regulator_get_value(dev_list[i]),
332 			    expected_setting_list[i].voltage);
333 
334 		/* Check, that regulator output Current value is as expected */
335 		ut_asserteq(regulator_get_current(dev_list[i]),
336 			    expected_setting_list[i].current);
337 
338 		/* Check, that regulator output Enable state is as expected */
339 		ut_asserteq(regulator_get_enable(dev_list[i]),
340 			    expected_setting_list[i].enable);
341 	}
342 
343 	return 0;
344 }
345 DM_TEST(dm_test_power_regulator_autoset_list, DM_TESTF_SCAN_FDT);
346