8  * Based on DMIC driver sample, which is:
13 #include <zephyr/audio/dmic.h>
30 #error "Unsupported DMIC device"
62 /* Verify that dmic_trigger fails when DMIC is not configured
63  * this test must run first, before DMIC has been configured
65 ZTEST(dmic, test_0_start_fail)  in ZTEST()  argument
69 	zassert_true(device_is_ready(dmic_dev), "DMIC device is not ready");  in ZTEST()
71 	zassert_not_equal(ret, 0, "DMIC trigger should fail when DMIC is not configured");  in ZTEST()
74 static int do_pdm_transfer(const struct device *dmic,  in do_pdm_transfer()  argument
84 	ret = dmic_configure(dmic, cfg);  in do_pdm_transfer()
86 		TC_PRINT("DMIC configuration failed: %d\n", ret);  in do_pdm_transfer()
93 		      "DMIC configure should populate act_num_chan field");  in do_pdm_transfer()
96 		      "DMIC configure should populate act_chan_map_lo field");  in do_pdm_transfer()
99 		      "DMIC configure should populate act_chan_map_hi field");  in do_pdm_transfer()
100 	ret = dmic_trigger(dmic, DMIC_TRIGGER_START);  in do_pdm_transfer()
102 		TC_PRINT("DMIC start trigger failed: %d\n", ret);  in do_pdm_transfer()
106 	/* We read more than the total BLOCK_COUNT to insure the DMIC  in do_pdm_transfer()
111 		ret = dmic_read(dmic, 0, &buffer, &size, READ_TIMEOUT);  in do_pdm_transfer()
113 			TC_PRINT("DMIC read failed: %d\n", ret);  in do_pdm_transfer()
121 	ret = dmic_trigger(dmic, DMIC_TRIGGER_STOP);  in do_pdm_transfer()
123 		TC_PRINT("DMIC stop trigger failed: %d\n", ret);  in do_pdm_transfer()
130 /* Verify that the DMIC can transfer from a single channel */
131 ZTEST(dmic, test_single_channel)  in ZTEST()  argument
144 /* Verify that the DMIC can transfer from a L/R channel pair */
145 ZTEST(dmic, test_stereo_channel)  in ZTEST()  argument
164 /* Test DMIC with maximum number of channels */
165 ZTEST(dmic, test_max_channel)  in ZTEST()  argument
194 ZTEST(dmic, test_pause_restart)  in ZTEST()  argument
208 	zassert_equal(ret, 0, "DMIC configure failed");  in ZTEST()
210 	/* Start the DMIC, and pause it immediately */  in ZTEST()
212 	zassert_equal(ret, 0, "DMIC start failed");  in ZTEST()
214 	zassert_equal(ret, 0, "DMIC pause failed");  in ZTEST()
215 	/* There may be some buffers in the DMIC queue, but a read  in ZTEST()
225 	zassert_not_equal(ret, 0, "DMIC is paused, reads should timeout");  in ZTEST()
227 	/* Unpause the DMIC */  in ZTEST()
229 	zassert_equal(ret, 0, "DMIC release failed");  in ZTEST()
238 	zassert_equal(ret, 0, "DMIC is active, reads should succeed");  in ZTEST()
240 	/* Stop the DMIC, and repeat the same tests */  in ZTEST()
242 	zassert_equal(ret, 0, "DMIC stop failed");  in ZTEST()
243 	/* Versus a pause, DMIC reads should immediately stop once DMIC times  in ZTEST()
247 	zassert_not_equal(ret, 0, "DMIC read should timeout when DMIC is stopped");  in ZTEST()
249 	zassert_equal(ret, 0, "DMIC restart failed");  in ZTEST()
258 	zassert_equal(ret, 0, "DMIC is active, reads should succeed");  in ZTEST()
260 	/* Test is over. Stop the DMIC */  in ZTEST()
262 	zassert_equal(ret, 0, "DMIC stop failed");  in ZTEST()
266 ZTEST(dmic, test_bad_pair)  in ZTEST()  argument
279 	zassert_not_equal(ret, 0, "DMIC configure should fail with "  in ZTEST()
287 	zassert_not_equal(ret, 0, "DMIC configure should fail with "  in ZTEST()
291 ZTEST_SUITE(dmic, NULL, NULL, NULL, NULL, NULL);