1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* Unit tests for IIO light sensor gain-time-scale helpers |
3 | * |
4 | * Copyright (c) 2023 Matti Vaittinen <mazziesaccount@gmail.com> |
5 | */ |
6 | |
7 | #include <kunit/device.h> |
8 | #include <kunit/test.h> |
9 | #include <linux/device.h> |
10 | #include <linux/iio/iio-gts-helper.h> |
11 | #include <linux/iio/types.h> |
12 | |
13 | /* |
14 | * Please, read the "rant" from the top of the lib/test_linear_ranges.c if |
15 | * you see a line of helper code which is not being tested. |
16 | * |
17 | * Then, please look at the line which is not being tested. Is this line |
18 | * somehow unusually complex? If answer is "no", then chances are that the |
19 | * "development inertia" caused by adding a test exceeds the benefits. |
20 | * |
21 | * If yes, then adding a test is probably a good idea but please stop for a |
22 | * moment and consider the effort of changing all the tests when code gets |
23 | * refactored. Eventually it neeeds to be. |
24 | */ |
25 | |
26 | #define TEST_TSEL_50 1 |
27 | #define TEST_TSEL_X_MIN TEST_TSEL_50 |
28 | #define TEST_TSEL_100 0 |
29 | #define TEST_TSEL_200 2 |
30 | #define TEST_TSEL_400 4 |
31 | #define TEST_TSEL_X_MAX TEST_TSEL_400 |
32 | |
33 | #define TEST_GSEL_1 0x00 |
34 | #define TEST_GSEL_X_MIN TEST_GSEL_1 |
35 | #define TEST_GSEL_4 0x08 |
36 | #define TEST_GSEL_16 0x0a |
37 | #define TEST_GSEL_32 0x0b |
38 | #define TEST_GSEL_64 0x0c |
39 | #define TEST_GSEL_256 0x18 |
40 | #define TEST_GSEL_512 0x19 |
41 | #define TEST_GSEL_1024 0x1a |
42 | #define TEST_GSEL_2048 0x1b |
43 | #define TEST_GSEL_4096 0x1c |
44 | #define TEST_GSEL_X_MAX TEST_GSEL_4096 |
45 | |
46 | #define TEST_SCALE_1X 64 |
47 | #define TEST_SCALE_MIN_X TEST_SCALE_1X |
48 | #define TEST_SCALE_2X 32 |
49 | #define TEST_SCALE_4X 16 |
50 | #define TEST_SCALE_8X 8 |
51 | #define TEST_SCALE_16X 4 |
52 | #define TEST_SCALE_32X 2 |
53 | #define TEST_SCALE_64X 1 |
54 | |
55 | #define TEST_SCALE_NANO_128X 500000000 |
56 | #define TEST_SCALE_NANO_256X 250000000 |
57 | #define TEST_SCALE_NANO_512X 125000000 |
58 | #define TEST_SCALE_NANO_1024X 62500000 |
59 | #define TEST_SCALE_NANO_2048X 31250000 |
60 | #define TEST_SCALE_NANO_4096X 15625000 |
61 | #define TEST_SCALE_NANO_4096X2 7812500 |
62 | #define TEST_SCALE_NANO_4096X4 3906250 |
63 | #define TEST_SCALE_NANO_4096X8 1953125 |
64 | |
65 | #define TEST_SCALE_NANO_MAX_X TEST_SCALE_NANO_4096X8 |
66 | |
67 | /* |
68 | * Can't have this allocated from stack because the kunit clean-up will |
69 | * happen only after the test function has already gone |
70 | */ |
71 | static struct iio_gts gts; |
72 | |
73 | static const struct iio_gain_sel_pair gts_test_gains[] = { |
74 | GAIN_SCALE_GAIN(1, TEST_GSEL_1), |
75 | GAIN_SCALE_GAIN(4, TEST_GSEL_4), |
76 | GAIN_SCALE_GAIN(16, TEST_GSEL_16), |
77 | GAIN_SCALE_GAIN(32, TEST_GSEL_32), |
78 | GAIN_SCALE_GAIN(64, TEST_GSEL_64), |
79 | GAIN_SCALE_GAIN(256, TEST_GSEL_256), |
80 | GAIN_SCALE_GAIN(512, TEST_GSEL_512), |
81 | GAIN_SCALE_GAIN(1024, TEST_GSEL_1024), |
82 | GAIN_SCALE_GAIN(2048, TEST_GSEL_2048), |
83 | GAIN_SCALE_GAIN(4096, TEST_GSEL_4096), |
84 | #define HWGAIN_MAX 4096 |
85 | }; |
86 | |
87 | static const struct iio_itime_sel_mul gts_test_itimes[] = { |
88 | GAIN_SCALE_ITIME_US(400 * 1000, TEST_TSEL_400, 8), |
89 | GAIN_SCALE_ITIME_US(200 * 1000, TEST_TSEL_200, 4), |
90 | GAIN_SCALE_ITIME_US(100 * 1000, TEST_TSEL_100, 2), |
91 | GAIN_SCALE_ITIME_US(50 * 1000, TEST_TSEL_50, 1), |
92 | #define TIMEGAIN_MAX 8 |
93 | }; |
94 | #define TOTAL_GAIN_MAX (HWGAIN_MAX * TIMEGAIN_MAX) |
95 | #define IIO_GTS_TEST_DEV "iio-gts-test-dev" |
96 | |
97 | static struct device *__test_init_iio_gain_scale(struct kunit *test, |
98 | struct iio_gts *gts, const struct iio_gain_sel_pair *g_table, |
99 | int num_g, const struct iio_itime_sel_mul *i_table, int num_i) |
100 | { |
101 | struct device *dev; |
102 | int ret; |
103 | |
104 | dev = kunit_device_register(test, IIO_GTS_TEST_DEV); |
105 | |
106 | KUNIT_EXPECT_NOT_ERR_OR_NULL(test, dev); |
107 | if (IS_ERR_OR_NULL(ptr: dev)) |
108 | return NULL; |
109 | |
110 | ret = devm_iio_init_iio_gts(dev, TEST_SCALE_1X, max_scale_nano: 0, gain_tbl: g_table, num_gain: num_g, |
111 | tim_tbl: i_table, num_times: num_i, gts); |
112 | KUNIT_EXPECT_EQ(test, 0, ret); |
113 | if (ret) |
114 | return NULL; |
115 | |
116 | return dev; |
117 | } |
118 | |
119 | #define test_init_iio_gain_scale(test, gts) \ |
120 | __test_init_iio_gain_scale(test, gts, gts_test_gains, \ |
121 | ARRAY_SIZE(gts_test_gains), gts_test_itimes, \ |
122 | ARRAY_SIZE(gts_test_itimes)) |
123 | |
124 | static void test_init_iio_gts_invalid(struct kunit *test) |
125 | { |
126 | struct device *dev; |
127 | int ret; |
128 | const struct iio_itime_sel_mul itimes_neg[] = { |
129 | GAIN_SCALE_ITIME_US(-10, TEST_TSEL_400, 8), |
130 | GAIN_SCALE_ITIME_US(200 * 1000, TEST_TSEL_200, 4), |
131 | }; |
132 | const struct iio_gain_sel_pair gains_neg[] = { |
133 | GAIN_SCALE_GAIN(1, TEST_GSEL_1), |
134 | GAIN_SCALE_GAIN(2, TEST_GSEL_4), |
135 | GAIN_SCALE_GAIN(-2, TEST_GSEL_16), |
136 | }; |
137 | /* 55555 * 38656 = 2147534080 => overflows 32bit int */ |
138 | const struct iio_itime_sel_mul itimes_overflow[] = { |
139 | GAIN_SCALE_ITIME_US(400 * 1000, TEST_TSEL_400, 55555), |
140 | GAIN_SCALE_ITIME_US(200 * 1000, TEST_TSEL_200, 4), |
141 | }; |
142 | const struct iio_gain_sel_pair gains_overflow[] = { |
143 | GAIN_SCALE_GAIN(1, TEST_GSEL_1), |
144 | GAIN_SCALE_GAIN(2, TEST_GSEL_4), |
145 | GAIN_SCALE_GAIN(38656, TEST_GSEL_16), |
146 | }; |
147 | |
148 | dev = kunit_device_register(test, IIO_GTS_TEST_DEV); |
149 | KUNIT_EXPECT_NOT_ERR_OR_NULL(test, dev); |
150 | if (!dev) |
151 | return; |
152 | |
153 | /* Ok gains, negative time */ |
154 | ret = devm_iio_init_iio_gts(dev, TEST_SCALE_1X, max_scale_nano: 0, gain_tbl: gts_test_gains, |
155 | ARRAY_SIZE(gts_test_gains), tim_tbl: itimes_neg, |
156 | ARRAY_SIZE(itimes_neg), gts: >s); |
157 | KUNIT_EXPECT_EQ(test, -EINVAL, ret); |
158 | |
159 | /* Ok times, negative gain */ |
160 | ret = devm_iio_init_iio_gts(dev, TEST_SCALE_1X, max_scale_nano: 0, gain_tbl: gains_neg, |
161 | ARRAY_SIZE(gains_neg), tim_tbl: gts_test_itimes, |
162 | ARRAY_SIZE(gts_test_itimes), gts: >s); |
163 | KUNIT_EXPECT_EQ(test, -EINVAL, ret); |
164 | |
165 | /* gain * time overflow int */ |
166 | ret = devm_iio_init_iio_gts(dev, TEST_SCALE_1X, max_scale_nano: 0, gain_tbl: gains_overflow, |
167 | ARRAY_SIZE(gains_overflow), tim_tbl: itimes_overflow, |
168 | ARRAY_SIZE(itimes_overflow), gts: >s); |
169 | KUNIT_EXPECT_EQ(test, -EOVERFLOW, ret); |
170 | } |
171 | |
172 | static void test_iio_gts_find_gain_for_scale_using_time(struct kunit *test) |
173 | { |
174 | struct device *dev; |
175 | int ret, gain_sel; |
176 | |
177 | dev = test_init_iio_gain_scale(test, >s); |
178 | if (!dev) |
179 | return; |
180 | |
181 | ret = iio_gts_find_gain_sel_for_scale_using_time(gts: >s, TEST_TSEL_100, |
182 | TEST_SCALE_8X, scale_nano: 0, gain_sel: &gain_sel); |
183 | /* |
184 | * Meas time 100 => gain by time 2x |
185 | * TEST_SCALE_8X matches total gain 8x |
186 | * => required HWGAIN 4x |
187 | */ |
188 | KUNIT_EXPECT_EQ(test, 0, ret); |
189 | KUNIT_EXPECT_EQ(test, TEST_GSEL_4, gain_sel); |
190 | |
191 | ret = iio_gts_find_gain_sel_for_scale_using_time(gts: >s, TEST_TSEL_200, scale_int: 0, |
192 | TEST_SCALE_NANO_256X, gain_sel: &gain_sel); |
193 | /* |
194 | * Meas time 200 => gain by time 4x |
195 | * TEST_SCALE_256X matches total gain 256x |
196 | * => required HWGAIN 256/4 => 64x |
197 | */ |
198 | KUNIT_EXPECT_EQ(test, 0, ret); |
199 | KUNIT_EXPECT_EQ(test, TEST_GSEL_64, gain_sel); |
200 | |
201 | /* Min time, Min gain */ |
202 | ret = iio_gts_find_gain_sel_for_scale_using_time(gts: >s, TEST_TSEL_X_MIN, |
203 | TEST_SCALE_MIN_X, scale_nano: 0, gain_sel: &gain_sel); |
204 | KUNIT_EXPECT_EQ(test, 0, ret); |
205 | KUNIT_EXPECT_EQ(test, TEST_GSEL_1, gain_sel); |
206 | |
207 | /* Max time, Max gain */ |
208 | ret = iio_gts_find_gain_sel_for_scale_using_time(gts: >s, TEST_TSEL_X_MAX, |
209 | scale_int: 0, TEST_SCALE_NANO_MAX_X, gain_sel: &gain_sel); |
210 | KUNIT_EXPECT_EQ(test, 0, ret); |
211 | KUNIT_EXPECT_EQ(test, TEST_GSEL_4096, gain_sel); |
212 | |
213 | ret = iio_gts_find_gain_sel_for_scale_using_time(gts: >s, TEST_TSEL_100, scale_int: 0, |
214 | TEST_SCALE_NANO_256X, gain_sel: &gain_sel); |
215 | /* |
216 | * Meas time 100 => gain by time 2x |
217 | * TEST_SCALE_256X matches total gain 256x |
218 | * => required HWGAIN 256/2 => 128x (not in gain-table - unsupported) |
219 | */ |
220 | KUNIT_EXPECT_NE(test, 0, ret); |
221 | |
222 | ret = iio_gts_find_gain_sel_for_scale_using_time(gts: >s, TEST_TSEL_200, scale_int: 0, |
223 | TEST_SCALE_NANO_MAX_X, gain_sel: &gain_sel); |
224 | /* We can't reach the max gain with integration time smaller than MAX */ |
225 | KUNIT_EXPECT_NE(test, 0, ret); |
226 | |
227 | ret = iio_gts_find_gain_sel_for_scale_using_time(gts: >s, TEST_TSEL_50, scale_int: 0, |
228 | TEST_SCALE_NANO_MAX_X, gain_sel: &gain_sel); |
229 | /* We can't reach the max gain with integration time smaller than MAX */ |
230 | KUNIT_EXPECT_NE(test, 0, ret); |
231 | } |
232 | |
233 | static void test_iio_gts_find_new_gain_sel_by_old_gain_time(struct kunit *test) |
234 | { |
235 | struct device *dev; |
236 | int ret, old_gain, new_gain, old_time_sel, new_time_sel; |
237 | |
238 | dev = test_init_iio_gain_scale(test, >s); |
239 | if (!dev) |
240 | return; |
241 | |
242 | old_gain = 32; |
243 | old_time_sel = TEST_TSEL_200; |
244 | new_time_sel = TEST_TSEL_400; |
245 | |
246 | ret = iio_gts_find_new_gain_sel_by_old_gain_time(gts: >s, old_gain, |
247 | old_time_sel, new_time_sel, new_gain: &new_gain); |
248 | KUNIT_EXPECT_EQ(test, 0, ret); |
249 | /* |
250 | * Doubling the integration time doubles the total gain - so old |
251 | * (hw)gain must be divided by two to compensate. => 32 / 2 => 16 |
252 | */ |
253 | KUNIT_EXPECT_EQ(test, 16, new_gain); |
254 | |
255 | old_gain = 4; |
256 | old_time_sel = TEST_TSEL_50; |
257 | new_time_sel = TEST_TSEL_200; |
258 | ret = iio_gts_find_new_gain_sel_by_old_gain_time(gts: >s, old_gain, |
259 | old_time_sel, new_time_sel, new_gain: &new_gain); |
260 | KUNIT_EXPECT_EQ(test, 0, ret); |
261 | /* |
262 | * gain by time 1x => 4x - (hw)gain 4x => 1x |
263 | */ |
264 | KUNIT_EXPECT_EQ(test, 1, new_gain); |
265 | |
266 | old_gain = 512; |
267 | old_time_sel = TEST_TSEL_400; |
268 | new_time_sel = TEST_TSEL_50; |
269 | ret = iio_gts_find_new_gain_sel_by_old_gain_time(gts: >s, old_gain, |
270 | old_time_sel, new_time_sel, new_gain: &new_gain); |
271 | KUNIT_EXPECT_EQ(test, 0, ret); |
272 | /* |
273 | * gain by time 8x => 1x - (hw)gain 512x => 4096x) |
274 | */ |
275 | KUNIT_EXPECT_EQ(test, 4096, new_gain); |
276 | |
277 | /* Unsupported gain 2x */ |
278 | old_gain = 4; |
279 | old_time_sel = TEST_TSEL_200; |
280 | new_time_sel = TEST_TSEL_400; |
281 | ret = iio_gts_find_new_gain_sel_by_old_gain_time(gts: >s, old_gain, |
282 | old_time_sel, new_time_sel, new_gain: &new_gain); |
283 | KUNIT_EXPECT_NE(test, 0, ret); |
284 | |
285 | /* Too small gain */ |
286 | old_gain = 4; |
287 | old_time_sel = TEST_TSEL_50; |
288 | new_time_sel = TEST_TSEL_400; |
289 | ret = iio_gts_find_new_gain_sel_by_old_gain_time(gts: >s, old_gain, |
290 | old_time_sel, new_time_sel, new_gain: &new_gain); |
291 | KUNIT_EXPECT_NE(test, 0, ret); |
292 | |
293 | /* Too big gain */ |
294 | old_gain = 1024; |
295 | old_time_sel = TEST_TSEL_400; |
296 | new_time_sel = TEST_TSEL_50; |
297 | ret = iio_gts_find_new_gain_sel_by_old_gain_time(gts: >s, old_gain, |
298 | old_time_sel, new_time_sel, new_gain: &new_gain); |
299 | KUNIT_EXPECT_NE(test, 0, ret); |
300 | |
301 | } |
302 | |
303 | static void test_iio_find_closest_gain_low(struct kunit *test) |
304 | { |
305 | struct device *dev; |
306 | bool in_range; |
307 | int ret; |
308 | |
309 | const struct iio_gain_sel_pair gts_test_gains_gain_low[] = { |
310 | GAIN_SCALE_GAIN(4, TEST_GSEL_4), |
311 | GAIN_SCALE_GAIN(16, TEST_GSEL_16), |
312 | GAIN_SCALE_GAIN(32, TEST_GSEL_32), |
313 | }; |
314 | |
315 | dev = test_init_iio_gain_scale(test, >s); |
316 | if (!dev) |
317 | return; |
318 | |
319 | ret = iio_find_closest_gain_low(gts: >s, gain: 2, in_range: &in_range); |
320 | KUNIT_EXPECT_EQ(test, 1, ret); |
321 | KUNIT_EXPECT_EQ(test, true, in_range); |
322 | |
323 | ret = iio_find_closest_gain_low(gts: >s, gain: 1, in_range: &in_range); |
324 | KUNIT_EXPECT_EQ(test, 1, ret); |
325 | KUNIT_EXPECT_EQ(test, true, in_range); |
326 | |
327 | ret = iio_find_closest_gain_low(gts: >s, gain: 4095, in_range: &in_range); |
328 | KUNIT_EXPECT_EQ(test, 2048, ret); |
329 | KUNIT_EXPECT_EQ(test, true, in_range); |
330 | |
331 | ret = iio_find_closest_gain_low(gts: >s, gain: 4097, in_range: &in_range); |
332 | KUNIT_EXPECT_EQ(test, 4096, ret); |
333 | KUNIT_EXPECT_EQ(test, false, in_range); |
334 | |
335 | kunit_device_unregister(test, dev); |
336 | |
337 | dev = __test_init_iio_gain_scale(test, gts: >s, g_table: gts_test_gains_gain_low, |
338 | ARRAY_SIZE(gts_test_gains_gain_low), |
339 | i_table: gts_test_itimes, ARRAY_SIZE(gts_test_itimes)); |
340 | if (!dev) |
341 | return; |
342 | |
343 | ret = iio_find_closest_gain_low(gts: >s, gain: 3, in_range: &in_range); |
344 | KUNIT_EXPECT_EQ(test, -EINVAL, ret); |
345 | KUNIT_EXPECT_EQ(test, false, in_range); |
346 | } |
347 | |
348 | static void test_iio_gts_total_gain_to_scale(struct kunit *test) |
349 | { |
350 | struct device *dev; |
351 | int ret, scale_int, scale_nano; |
352 | |
353 | dev = test_init_iio_gain_scale(test, >s); |
354 | if (!dev) |
355 | return; |
356 | |
357 | ret = iio_gts_total_gain_to_scale(gts: >s, total_gain: 1, scale_int: &scale_int, scale_nano: &scale_nano); |
358 | KUNIT_EXPECT_EQ(test, 0, ret); |
359 | KUNIT_EXPECT_EQ(test, TEST_SCALE_1X, scale_int); |
360 | KUNIT_EXPECT_EQ(test, 0, scale_nano); |
361 | |
362 | ret = iio_gts_total_gain_to_scale(gts: >s, total_gain: 1, scale_int: &scale_int, scale_nano: &scale_nano); |
363 | KUNIT_EXPECT_EQ(test, 0, ret); |
364 | KUNIT_EXPECT_EQ(test, TEST_SCALE_1X, scale_int); |
365 | KUNIT_EXPECT_EQ(test, 0, scale_nano); |
366 | |
367 | ret = iio_gts_total_gain_to_scale(gts: >s, total_gain: 4096 * 8, scale_int: &scale_int, |
368 | scale_nano: &scale_nano); |
369 | KUNIT_EXPECT_EQ(test, 0, ret); |
370 | KUNIT_EXPECT_EQ(test, 0, scale_int); |
371 | KUNIT_EXPECT_EQ(test, TEST_SCALE_NANO_4096X8, scale_nano); |
372 | } |
373 | |
374 | static void test_iio_gts_chk_times(struct kunit *test, const int *vals) |
375 | { |
376 | static const int expected[] = {0, 50000, 0, 100000, 0, 200000, 0, 400000}; |
377 | int i; |
378 | |
379 | for (i = 0; i < ARRAY_SIZE(expected); i++) |
380 | KUNIT_EXPECT_EQ(test, expected[i], vals[i]); |
381 | } |
382 | |
383 | static void test_iio_gts_chk_scales_all(struct kunit *test, struct iio_gts *gts, |
384 | const int *vals, int len) |
385 | { |
386 | static const int gains[] = {1, 2, 4, 8, 16, 32, 64, 128, 256, 512, |
387 | 1024, 2048, 4096, 4096 * 2, 4096 * 4, |
388 | 4096 * 8}; |
389 | int expected[ARRAY_SIZE(gains) * 2]; |
390 | int i, ret; |
391 | int exp_len = ARRAY_SIZE(gains) * 2; |
392 | |
393 | KUNIT_EXPECT_EQ(test, exp_len, len); |
394 | if (len != exp_len) |
395 | return; |
396 | |
397 | for (i = 0; i < ARRAY_SIZE(gains); i++) { |
398 | ret = iio_gts_total_gain_to_scale(gts, total_gain: gains[i], |
399 | scale_int: &expected[2 * i], |
400 | scale_nano: &expected[2 * i + 1]); |
401 | KUNIT_EXPECT_EQ(test, 0, ret); |
402 | if (ret) |
403 | return; |
404 | } |
405 | |
406 | for (i = 0; i < ARRAY_SIZE(expected); i++) |
407 | KUNIT_EXPECT_EQ(test, expected[i], vals[i]); |
408 | } |
409 | |
410 | static void test_iio_gts_chk_scales_t200(struct kunit *test, struct iio_gts *gts, |
411 | const int *vals, int len) |
412 | { |
413 | /* The gain caused by time 200 is 4x */ |
414 | static const int gains[] = { |
415 | 1 * 4, |
416 | 4 * 4, |
417 | 16 * 4, |
418 | 32 * 4, |
419 | 64 * 4, |
420 | 256 * 4, |
421 | 512 * 4, |
422 | 1024 * 4, |
423 | 2048 * 4, |
424 | 4096 * 4 |
425 | }; |
426 | int expected[ARRAY_SIZE(gains) * 2]; |
427 | int i, ret; |
428 | |
429 | KUNIT_EXPECT_EQ(test, 2 * ARRAY_SIZE(gains), len); |
430 | if (len < 2 * ARRAY_SIZE(gains)) |
431 | return; |
432 | |
433 | for (i = 0; i < ARRAY_SIZE(gains); i++) { |
434 | ret = iio_gts_total_gain_to_scale(gts, total_gain: gains[i], |
435 | scale_int: &expected[2 * i], |
436 | scale_nano: &expected[2 * i + 1]); |
437 | KUNIT_EXPECT_EQ(test, 0, ret); |
438 | if (ret) |
439 | return; |
440 | } |
441 | |
442 | for (i = 0; i < ARRAY_SIZE(expected); i++) |
443 | KUNIT_EXPECT_EQ(test, expected[i], vals[i]); |
444 | } |
445 | |
446 | static void test_iio_gts_avail_test(struct kunit *test) |
447 | { |
448 | struct device *dev; |
449 | int ret; |
450 | int type, len; |
451 | const int *vals; |
452 | |
453 | dev = test_init_iio_gain_scale(test, >s); |
454 | if (!dev) |
455 | return; |
456 | |
457 | /* test table building for times and iio_gts_avail_times() */ |
458 | ret = iio_gts_avail_times(gts: >s, vals: &vals, type: &type, length: &len); |
459 | KUNIT_EXPECT_EQ(test, IIO_AVAIL_LIST, ret); |
460 | if (ret) |
461 | return; |
462 | |
463 | KUNIT_EXPECT_EQ(test, IIO_VAL_INT_PLUS_MICRO, type); |
464 | KUNIT_EXPECT_EQ(test, 8, len); |
465 | if (len < 8) |
466 | return; |
467 | |
468 | test_iio_gts_chk_times(test, vals); |
469 | |
470 | /* Test table building for all scales and iio_gts_all_avail_scales() */ |
471 | ret = iio_gts_all_avail_scales(gts: >s, vals: &vals, type: &type, length: &len); |
472 | KUNIT_EXPECT_EQ(test, IIO_AVAIL_LIST, ret); |
473 | if (ret) |
474 | return; |
475 | |
476 | KUNIT_EXPECT_EQ(test, IIO_VAL_INT_PLUS_NANO, type); |
477 | |
478 | test_iio_gts_chk_scales_all(test, gts: >s, vals, len); |
479 | |
480 | /* |
481 | * Test table building for scales/time and |
482 | * iio_gts_avail_scales_for_time() |
483 | */ |
484 | ret = iio_gts_avail_scales_for_time(gts: >s, time: 200000, vals: &vals, type: &type, length: &len); |
485 | KUNIT_EXPECT_EQ(test, IIO_AVAIL_LIST, ret); |
486 | if (ret) |
487 | return; |
488 | |
489 | KUNIT_EXPECT_EQ(test, IIO_VAL_INT_PLUS_NANO, type); |
490 | test_iio_gts_chk_scales_t200(test, gts: >s, vals, len); |
491 | } |
492 | |
493 | static struct kunit_case iio_gts_test_cases[] = { |
494 | KUNIT_CASE(test_init_iio_gts_invalid), |
495 | KUNIT_CASE(test_iio_gts_find_gain_for_scale_using_time), |
496 | KUNIT_CASE(test_iio_gts_find_new_gain_sel_by_old_gain_time), |
497 | KUNIT_CASE(test_iio_find_closest_gain_low), |
498 | KUNIT_CASE(test_iio_gts_total_gain_to_scale), |
499 | KUNIT_CASE(test_iio_gts_avail_test), |
500 | {} |
501 | }; |
502 | |
503 | static struct kunit_suite iio_gts_test_suite = { |
504 | .name = "iio-gain-time-scale" , |
505 | .test_cases = iio_gts_test_cases, |
506 | }; |
507 | |
508 | kunit_test_suite(iio_gts_test_suite); |
509 | |
510 | MODULE_LICENSE("GPL" ); |
511 | MODULE_AUTHOR("Matti Vaittinen <mazziesaccount@gmail.com>" ); |
512 | MODULE_DESCRIPTION("Test IIO light sensor gain-time-scale helpers" ); |
513 | MODULE_IMPORT_NS(IIO_GTS_HELPER); |
514 | |